CN110435473A - A kind of power switching device, team control charging system and method - Google Patents
A kind of power switching device, team control charging system and method Download PDFInfo
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- CN110435473A CN110435473A CN201910758374.2A CN201910758374A CN110435473A CN 110435473 A CN110435473 A CN 110435473A CN 201910758374 A CN201910758374 A CN 201910758374A CN 110435473 A CN110435473 A CN 110435473A
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- charging
- magnetic latching
- latching relay
- power
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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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
-
- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/67—Controlling two or more charging stations
-
- 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
- Y02T90/12—Electric charging stations
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Present disclose provides power switching device, team control charging system and methods.Wherein, power switching device includes straightening current relay, and input terminal is connected with charging module, and output end is connected with magnetic latching relay group, and control terminal is connected with switch controller；Magnetic latching relay group comprising n*2 magnetic latching relay；The input terminal of magnetic latching relay group is connected in parallel, and is equipped with n output end, and each output end is connected with a bus；Every bus is made of positive electrode bus and negative electrode bus, is serially connected with a magnetic latching relay in positive electrode bus and negative electrode bus respectively；The control terminal of each magnetic latching relay is connected with switch controller；Every bus connects a charging terminal；Switch controller, for during power switches, control high voltage direct current relay disconnection to control magnetic latching relay in the corresponding magnetic latching relay group of any charging terminal and is closed, high voltage direct current relay closure is controlled again, is completed charging module and is cut throwing to any charging terminal.
Description
Technical field
The disclosure belongs to electric vehicle charging field more particularly to a kind of power switching device, team control charging system and side
Method.
Background technique
Only there is provided background technical informations relevant to the disclosure for the statement of this part, it is not necessary to so constitute first skill
Art.
Currently, charging pile is quickly grown, team control charging system, which can be concentrated, solves the problems, such as compatibility and utilization rate, therefore
There is larger demand in the market.Output power can be automatically assigned to multiple charging terminals by team control charging system on demand.Currently,
In the power handover control system of team control charging system, high straightening is usually selected for the switching device in power switching device
Current relay, and power handover control system generallys use be complete matrix switch i.e. any power cell can switching to arbitrarily
Charging terminal.In complete matrix switching, it is assumed that power cell number m, bus number n, and switching component has intermediate state (cut-in without ball state
Null switch component counts needed for) are as follows: m*n*2.
Inventors have found that for more power cell multiple gun charging systems, with the increasing of power cell or charging terminal quantity
Add, switching device quantity is in the increase of the geometry order of magnitude, and switching matrix is made of high voltage direct current relay, high voltage direct current after
Electric appliance is expensive, improves the cost of charging equipment.
Summary of the invention
To solve the above-mentioned problems, the first aspect of the disclosure provides a kind of power switching device, is guaranteeing team control
Cost is reduced under the premise of charging system operational safety.
To achieve the goals above, the disclosure adopts the following technical scheme that
A kind of power switching device, comprising:
High voltage direct current relay, input terminal are connected with charging module, and output end is connected with magnetic latching relay group, control
End is connected with switch controller；
Magnetic latching relay group comprising n*2 magnetic latching relay；The input terminal of the magnetic latching relay group is in parallel
Connection, magnetic latching relay group are equipped with n output end, and each output end is connected with a bus；Every bus is by positive electrode bus
It is constituted with negative electrode bus, is serially connected with a magnetic latching relay respectively in positive electrode bus and negative electrode bus；Each magnetic keeps relay
The control terminal of device is connected with switch controller；Every bus connects a charging terminal；N is positive integer；
The switch controller is used for: during power switching, control high voltage direct current relay is disconnected, and control is any
Magnetic latching relay closure in the corresponding magnetic latching relay group of charging terminal, then high voltage direct current relay closure is controlled, it is complete
Throwing is cut to any charging terminal at charging module.
To solve the above-mentioned problems, the second aspect of the disclosure provides a kind of team control charging system, is guaranteeing team control
Cost is reduced under the premise of charging system operational safety.
To achieve the goals above, the disclosure adopts the following technical scheme that
A kind of team control charging system, comprising:
At least two charging modules, each charging module are connected with a power switching device described above；Each fill
Electric module is connected with power controller, and the power controller is used for each charging module according to predetermined power allocation strategy
Distribution power；
The power controller is also connected with switch controller, and the power controller is also used to issue to switch controller
High voltage direct current relay control instruction and the instruction of magnetic latching relay group switching realize any charging module switching to any charging
Terminal.
A kind of working method of team control charging system is provided in terms of the third of the disclosure.
A kind of working method of team control charging system, comprising:
Selected charging module to be worked, disconnects its corresponding high voltage direct current relay；
Control needs the magnetic latching relay closure in the corresponding magnetic latching relay group of charging terminal at electric end, then controls height
Straightening current relay closure, realizes any charging module switching to any charging terminal.
The beneficial effect of the disclosure is:
(1) it uses magnetic latching relay as switching device in power switching device, while keeping relay to solve magnetic
Device can energy band carries the problem of switching by high current, but not, and the disclosure has been used cooperatively high voltage direct current relay, by strictly controlling
Relay switching sequence processed reduces height in team control charging system power switching device to realize under the premise that security is guaranteed
The usage quantity of straightening current relay.
(2) single device cost is down to about 30 yuan of magnetic latching relay by about 150 yuan of original high voltage direct current relay, energy
It is enough that entreprise cost is greatly lowered under the premise of guaranteeing team control charging system operational safety.In addition, magnetic latching relay due to
Small in size and have pcb board grade packing forms, switching matrix can be laid out PCB circuit board, be routed so simpler, and structure is tighter
It gathers, be more conducive to safeguard.
Detailed description of the invention
The Figure of description for constituting a part of this disclosure is used to provide further understanding of the disclosure, and the disclosure is shown
Meaning property embodiment and its explanation do not constitute the improper restriction to the disclosure for explaining the disclosure.
Fig. 1 is a kind of power switching device structural schematic diagram of the embodiment of the present disclosure.
Fig. 2 is a kind of team control charging system structural schematic diagram of the embodiment of the present disclosure.
Fig. 3 is a kind of power switching control flow chart of team control charging system of the embodiment of the present disclosure.
Specific embodiment
The disclosure is described further with embodiment with reference to the accompanying drawing.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the disclosure.Unless another
It indicates, all technical and scientific terms used herein has usual with disclosure person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the disclosure.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
In the disclosure, term for example "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", " side ",
The orientation or positional relationship of the instructions such as "bottom" is to be based on the orientation or positional relationship shown in the drawings, only to facilitate describing this public affairs
The relative for opening each component or component structure relationship and determination, not refers in particular to either component or element in the disclosure, cannot understand
For the limitation to the disclosure.
In the disclosure, term such as " affixed ", " connected ", " connection " be shall be understood in a broad sense, and indicate may be a fixed connection,
It is also possible to be integrally connected or is detachably connected；It can be directly connected, it can also be indirectly connected through an intermediary.For
The related scientific research of this field or technical staff can determine the concrete meaning of above-mentioned term in the disclosure as the case may be,
It should not be understood as the limitation to the disclosure.
Embodiment 1
In order to solve to reduce cost under the premise of guaranteeing team control charging system operational safety mentioned in background technique
The problem of, the present embodiment, as switching device, is cooperated the use of high voltage direct current relay, provides one using magnetic latching relay
Kind power switching device.
As shown in Figure 1, the power switching device of the present embodiment, comprising:
High voltage direct current relay, input terminal are connected with charging module, and output end is connected with magnetic latching relay group, control
End is connected with switch controller；
Magnetic latching relay group comprising n*2 magnetic latching relay；The input terminal of the magnetic latching relay group is in parallel
Connection, magnetic latching relay group are equipped with n output end, and each output end is connected with a bus；Every bus is by positive electrode bus
It is constituted with negative electrode bus；The control terminal of each magnetic latching relay is connected with switch controller；Every bus connects one and fills
Electric terminals；N is positive integer；
The switch controller is used for: during power switching, control high voltage direct current relay is disconnected, and control is any
Magnetic latching relay closure in the corresponding magnetic latching relay group of charging terminal, then high voltage direct current relay closure is controlled, it is complete
Throwing is cut to any charging terminal at charging module.
Wherein, charging terminal can be charging gun or other electrical equipment.
Magnetic latching relay is a kind of automatic switch.As other electromagnetic relays, to circuit play turn on automatically and
Cutting action.The difference is that the normally closed or normally open of magnetic latching relay is entirely to rely on the effect of permanent-magnet steel, open
The conversion of off status is to lean on the pulse electrical signal triggering of one fixed width and complete.
In specific implementation, the high voltage direct current relay is connected by cable with switch controller.
The magnetic latching relay is connected by cable with switch controller.
It uses magnetic latching relay as switching device in the power switching device of the present embodiment, while being protected to solve magnetic
Hold relay can by high current, but not energy band carry switching the problem of, high voltage direct current relay has been used cooperatively, by strictly controlling
Relay switching sequence processed reduces height in team control charging system power switching device to realize under the premise that security is guaranteed
The usage quantity of straightening current relay.
Embodiment 2
As shown in Fig. 2, a kind of team control charging system of the present embodiment, comprising:
M charging module, each charging module are connected with a power switching device as shown in Figure 1；Each charging mould
Block is connected with power controller, and the power controller is used to distribute to each charging module according to predetermined power allocation strategy
Power；Wherein, m is the positive integer more than or equal to 2；
The power controller is also connected with switch controller, and the power controller is also used to issue to switch controller
High voltage direct current relay control instruction and the instruction of magnetic latching relay group switching realize any charging module switching to any charging
Terminal.
As an implementation, the power controller is also connected with charge controller, the charge controller with fill
Electric terminals are connected；The power controller controls corresponding for issuing starting charging terminal order after charged controller forwarding
Charging terminal starting.
Specifically, each charging module passes through the first communication bus and is connected with power controller；
The power controller also passes through the second communication bus and is connected with switch controller；
The power controller also passes through third communication bus and is connected with charge controller, and the power controller is also used to
The power distribution strategies that should be taken are calculated according to the collected charge requirement of charge controller.
First communication bus, the second communication bus and third communication bus can be total for CAN bus or other kinds of communication
Line, those skilled in the art can be according to being actually specifically chosen.
In the present embodiment, the power distribution strategies are as follows: constant power distribution is carried out to each charging module.
It should be noted that in other embodiments, other power distribution strategies can also be used, such as according to frequency of use
It is proportional to all charging module distribution powers, those skilled in the art can be specifically chosen corresponding power point according to the actual situation
With strategy.
The working method of the team control charging system of the present embodiment, comprising:
Selected charging module to be worked, disconnects its corresponding high voltage direct current relay；
Control needs the magnetic latching relay closure in the corresponding magnetic latching relay group of charging terminal at electric end, then controls height
Straightening current relay closure, realizes any charging module switching to any charging terminal.
As an implementation, it before disconnecting the corresponding high voltage direct current relay of charging module to be worked, also wraps
It includes:
To each charging module according to predetermined power allocation strategy distribution power.
As another embodiment, the working method of team control charging system, further includes: control corresponding charging terminal and open
It is dynamic.
Since magnetic latching relay is easy to produce arcing in the case that band carries switching when being applied to high voltage direct current access,
To cause danger.To solve this problem above scheme be used cooperatively a high voltage direct current relay, for guarantee magnetic keep after
Electric appliance does not have electric current when switching in DC bus circuit, specific timing control process is as shown in Figure 3:
When preparing charging, power controller sends the order for disconnecting high voltage direct current relay to switch controller, so that
High voltage direct current relay disconnects, and power controller detects and judges whether high voltage direct current relay has disconnected, if so, to switch
Controller sends the order for resetting magnetic latching relay group and judges whether magnetic latching relay group has resetted, if so, filling simultaneously
When electric controller confirmation has charge requirement, the charging module that determination need to open and the magnetic latching relay that need to be closed；It controls first
Corresponding magnetic latching relay closure, recloses the high voltage direct current relay that corresponding charging module is connected in series, so that charging module
It opens and enters charged state；
After charging, the charging module that need to be closed and the high voltage direct current relay that need to be disconnected are confirmed；It is first shut off phase
Inductive charging module, then high voltage direct current relay is disconnected, corresponding magnetic latching relay is finally disconnected, this charging is terminated.
In power switching, need that first power cell shuts down, and corresponding high voltage direct current relay is disconnected, to the function
After magnetic latching relay in rate switching device completes switching action, then power cell is opened and will be in power switching device
High voltage direct current relay closure.In this way, power cell is in off-mode and main relay is disconnected when normal power unit switches
Open state will not export electric current, and it is all safe for controlling magnetic latching relay movement at this time.
Above scheme in the case where group control system failure, and safety.It is analyzed as follows:
1., since magnetic latching relay has the function of power down holding, will not be switched over, at this time if charging module power down
Above scheme is safe.
2. magnetic latching relay is by the state before keeping switch controller power down, wait switch if switch controller power down
Controller will detect the switching state of each relay again after re-powering, only circuit mesohigh DC relay state is
It is just switched over when disconnection, above scheme is also safe at this time.
3. if the main control chip program fleet in switch controller causes magnetic latching relay to act, at this time if direct current
Bus main relay is to disconnect, and DC bus does not constitute circuit, do not have electric current, therefore above scheme is safe；If
Main relay does not disconnect at this time, and what DC bus was constituted is complete charge circuit, but charging load is battery, on battery still
Voltage is had, magnetic latching relay main contacts both ends do not have pressure difference, not will cause arcing, therefore above scheme is also safe.
The foregoing is merely preferred embodiment of the present disclosure, are not limited to the disclosure, for the skill of this field
For art personnel, the disclosure can have various modifications and variations.It is all within the spirit and principle of the disclosure, it is made any to repair
Change, equivalent replacement, improvement etc., should be included within the protection scope of the disclosure.
Claims (10)
1. a kind of power switching device characterized by comprising
High voltage direct current relay, input terminal are connected with charging module, and output end is connected with magnetic latching relay group, control terminal with
Switch controller is connected；
Magnetic latching relay group comprising n*2 magnetic latching relay；The input terminal parallel connection of the magnetic latching relay group connects
It connects, magnetic latching relay group is equipped with n output end, and each output end is connected with a bus；Every bus by positive electrode bus and
Negative electrode bus is constituted, and is serially connected with a magnetic latching relay respectively in positive electrode bus and negative electrode bus；Each magnetic latching relay
Control terminal be connected with switch controller；Every bus connects a charging terminal；N is positive integer；
Switch controller, it acts as: during power switching, control high voltage direct current relay is disconnected, and control is arbitrarily filled
Magnetic latching relay closure in the corresponding magnetic latching relay group of electric terminals, then high voltage direct current relay closure is controlled, it completes
Charging module cuts throwing to any charging terminal.
2. power switching device as described in claim 1, which is characterized in that the high voltage direct current relay passes through cable and opens
Controller is closed to be connected.
3. power switching device as described in claim 1, which is characterized in that the magnetic latching relay passes through cable and switch
Controller is connected.
4. a kind of team control charging system characterized by comprising
At least two charging modules, each charging module and a power switching as claimed in any one of claims 1-3 fill
It sets connected；Each charging module is connected with power controller, and the power controller is used for each charging module according to default
Power distribution strategies distribution power；
The power controller is also connected with switch controller, and the power controller is also used to issue high pressure to switch controller
DC relay control instruction and the instruction of magnetic latching relay group switching realize any charging module switching to any charging eventually
End.
5. team control charging system as claimed in claim 4, which is characterized in that the power controller also with charge controller phase
Even, the charge controller is connected with charging terminal；The power controller is charged for issuing starting charging terminal order
Corresponding charging terminal starting is controlled after controller forwarding.
6. team control charging system as claimed in claim 4, which is characterized in that the power distribution strategies are as follows: to each charging
Module carries out constant power distribution.
7. team control charging system as claimed in claim 4, which is characterized in that the power distribution strategies are as follows: according to use frequency
Rate is proportional to all charging module distribution powers.
8. a kind of working method of the team control charging system as described in any in claim 4-7 characterized by comprising
Selected charging module to be worked, disconnects its corresponding high voltage direct current relay；
Control needs the magnetic latching relay closure in the corresponding magnetic latching relay group of charging terminal at electric end, then controls high straightening
Current relay closure, realizes any charging module switching to any charging terminal.
9. the working method of team control charging system as claimed in claim 8, which is characterized in that disconnect charging mould to be worked
Before the corresponding high voltage direct current relay of block, further includes:
To each charging module according to predetermined power allocation strategy distribution power.
10. the working method of team control charging system as claimed in claim 8, which is characterized in that this method further include: control phase
The starting of inductive charging terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910758374.2A CN110435473B (en) | 2019-08-16 | 2019-08-16 | Power switching device, group control charging system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910758374.2A CN110435473B (en) | 2019-08-16 | 2019-08-16 | Power switching device, group control charging system and method |
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| CN110435473A true CN110435473A (en) | 2019-11-12 |
| CN110435473B CN110435473B (en) | 2020-09-25 |
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Cited By (7)
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| CN112677808A (en) * | 2020-12-23 | 2021-04-20 | 国网湖北省电力有限公司电力科学研究院 | Multi-bus-bar type charging stack power distribution device and control method thereof |
| CN112737074A (en) * | 2020-12-28 | 2021-04-30 | 广州极飞科技股份有限公司 | Relay protection circuit, generator and generator relay protection method |
| DE102020134453A1 (en) | 2020-12-21 | 2022-06-23 | innogy eMobility Solutions GmbH | Arrangement for integration into a charging device for at least one electric vehicle |
| DE102020134458A1 (en) | 2020-12-21 | 2022-06-23 | innogy eMobility Solutions GmbH | Arrangement for integration into a charging device for at least one electric vehicle |
| DE102021121261A1 (en) | 2021-08-16 | 2023-02-16 | Prettl Electronics Automotive GmbH | Charging device and method for charging at least one electric vehicle |
| CN115811039A (en) * | 2023-01-17 | 2023-03-17 | 永联智慧能源科技(常熟)有限公司 | Power distribution control circuit, charging pile controller and charging pile |
| CN116031858A (en) * | 2023-01-04 | 2023-04-28 | 南方电网产业投资集团有限责任公司 | Power distribution system based on low-voltage relay |
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| CN115811039A (en) * | 2023-01-17 | 2023-03-17 | 永联智慧能源科技(常熟)有限公司 | Power distribution control circuit, charging pile controller and charging pile |
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| CN110435473B (en) | 2020-09-25 |
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