CN116031858B - Power distribution system based on low-voltage relay - Google Patents
Power distribution system based on low-voltage relay Download PDFInfo
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- CN116031858B CN116031858B CN202310007839.7A CN202310007839A CN116031858B CN 116031858 B CN116031858 B CN 116031858B CN 202310007839 A CN202310007839 A CN 202310007839A CN 116031858 B CN116031858 B CN 116031858B
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 95
- 229910052802 copper Inorganic materials 0.000 claims abstract description 95
- 239000010949 copper Substances 0.000 claims abstract description 95
- 239000002184 metal Substances 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 238000004891 communication Methods 0.000 claims description 24
- 239000000463 material Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000011159 matrix material Substances 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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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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Abstract
The application relates to the technical field of power and provides a power distribution system based on a low-voltage relay. According to the method, the complexity of the internal structure of the charging pile can be reduced, the overall space internal dimension of the power distribution system is optimized, the cabinet dimension of the rectifying cabinet of the charging pile is indirectly reduced, the use of sheet metal copper plates is reduced while the dimension is reduced, and the material cost of the whole machine is reduced. The system comprises: the system comprises a controller, an array low-voltage relay, an anode high-voltage power supply input end, a cathode high-voltage power supply input end, an anode direct-current bus, a cathode direct-current bus, an anode output bus copper plate and a cathode output bus copper plate, wherein the array low-voltage relay comprises a plurality of groups of low-voltage relays, each group of low-voltage relay comprises two low-voltage relays, the controller is used for controlling the two low-voltage relays in the same group of low-voltage relays to be simultaneously closed or opened, and controlling at most only one group of low-voltage relays in the plurality of groups of low-voltage relays to be in a closed state so as to distribute electric power.
Description
Technical Field
The application relates to the technical field of electric power, in particular to an electric power distribution system based on a low-voltage relay.
Background
With the rapid development of new energy electric vehicles, conventional integrated single-gun and double-gun direct current charging piles cannot meet the requirements of charging stations, and high-power multi-gun output charging piles are gradually put into use.
In the prior art, high-voltage direct current contactors are used for multi-gun output to realize switching from a charging pile to each direct current output bus, however, each high-voltage direct current contactor needs to be provided with a control cable and a feedback cable, and when a large number of high-voltage direct current contactors are used, the internal structure of the charging pile is complex.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a low-voltage relay-based power distribution system.
The application provides a power distribution system based on a low-voltage relay. The system comprises: the device comprises a controller, an array low-voltage relay, an anode high-voltage power supply input end, a cathode high-voltage power supply input end, an anode direct current bus, a cathode direct current bus, an anode output bus copper plate and a cathode output bus copper plate; the controller is respectively connected with the array low-voltage relay, the positive high-voltage power supply input end and the negative high-voltage power supply input end, the positive high-voltage power supply input end is also connected with the positive direct-current bus, and the negative high-voltage power supply input end is also connected with the negative direct-current bus;
the array low-voltage relays comprise a plurality of groups of low-voltage relays, each group of low-voltage relays comprises two low-voltage relays, one ends of contact switches of the two low-voltage relays are respectively connected with an anode direct current bus and a cathode direct current bus according to positive and negative, and the other ends of the contact switches of the two low-voltage relays are respectively connected with an anode output bus copper plate and a cathode output bus copper plate corresponding to the anode direct current bus and the cathode direct current bus;
and the controller is used for controlling two low-voltage relays in the same group of low-voltage relays to be simultaneously closed or opened and controlling at most one group of low-voltage relays in the plurality of groups of low-voltage relays to be in a closed state so as to distribute electric power.
In one embodiment, the controller is connected to the coils of each of the array of low voltage relays;
and the controller is used for controlling the two low-voltage relays in the same group to be simultaneously closed or opened through the coils of the two low-voltage relays in the same group.
In one embodiment, the controller is configured to simultaneously energize or simultaneously de-energize the coils of the two low-voltage relays in the same group of low-voltage relays, so that when the coils of the two low-voltage relays in the same group of low-voltage relays are simultaneously energized, the two low-voltage relays in the same group of low-voltage relays are simultaneously closed, or when the coils of the two low-voltage relays in the same group of low-voltage relays are simultaneously de-energized, the two low-voltage relays in the same group of low-voltage relays are simultaneously opened.
In one embodiment, the system further comprises: a plurality of copper card assembly interfaces in series;
and the serial copper plate assembly interface is used for connecting a plurality of systems in series.
In one embodiment, the plurality of series copper card assembly interfaces includes a first series copper card assembly interface, a second series copper card assembly interface, a third series copper card assembly interface, and a fourth series copper card assembly interface; the first serial copper plate assembly interface is connected with one end of the positive direct current bus, the second serial copper plate assembly interface is connected with the other end of the positive direct current bus, the third serial copper plate assembly interface is connected with one end of the negative direct current bus, and the fourth serial copper plate assembly interface is connected with the other end of the negative direct current bus.
In one embodiment, the system further comprises: a plurality of mounting fixing holes; the mounting and fixing holes are arranged at angular positions in the system.
In one embodiment, the system further comprises: an external communication component; the external communication component is in communication connection with the controller;
and the external communication component is used for external communication.
In one embodiment, the low-voltage relays in the array of low-voltage relays are mounted on the system in 6-group configurations.
In one embodiment, the system is a system configured in a 360kw 6 gun output charging stack rectifier.
In one embodiment, the system is constructed as a sheet metal structure of a plug frame type, and the array low-voltage relay is mounted on the system in a manner of being horizontally inserted into the plug frame.
The above-mentioned electric power distribution system based on low-voltage relay includes: the device comprises a controller, an array low-voltage relay, an anode high-voltage power supply input end, a cathode high-voltage power supply input end, an anode direct current bus, a cathode direct current bus, an anode output bus copper plate and a cathode output bus copper plate; the controller is respectively connected with the array low-voltage relay, the positive high-voltage power supply input end and the negative high-voltage power supply input end, the positive high-voltage power supply input end is also connected with the positive direct-current bus, and the negative high-voltage power supply input end is also connected with the negative direct-current bus; the array low-voltage relays comprise a plurality of groups of low-voltage relays, each group of low-voltage relays comprises two low-voltage relays, one ends of contact switches of the two low-voltage relays are respectively connected with an anode direct current bus and a cathode direct current bus according to positive and negative, and the other ends of the contact switches of the two low-voltage relays are respectively connected with an anode output bus copper plate and a cathode output bus copper plate corresponding to the anode direct current bus and the cathode direct current bus; the controller is used for controlling two low-voltage relays in the same group of low-voltage relays to be simultaneously closed or opened, and controlling at most one group of low-voltage relays in the plurality of groups of low-voltage relays to be in a closed state so as to distribute electric power. According to the scheme, the arrangement of cables is reduced through the internal layout of the low-voltage relay, the internal structure of the charging pile is simplified, the complexity of the internal structure of the charging pile is reduced, the overall space internal dimension of the power distribution system is optimized, the cabinet dimension of the rectifying cabinet of the charging pile is indirectly reduced, the use of sheet metal copper plates is reduced while the dimension is reduced, the material cost of the whole machine is reduced, and in addition, the low-voltage relay and the bus copper plates are standard components, so that the difficulty of production, manufacture and after-sale maintenance is reduced, the production efficiency is remarkably improved, and the waste of manpower resources is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application, illustrate and explain the application and are not to be construed as limiting the application.
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following description will make a brief introduction to the drawings used in the description of the embodiments, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Further, the drawings are not 1:1, and the relative dimensions of the various elements are drawn only by way of example in the drawings and are not necessarily drawn to true scale.
Fig. 1 is a schematic diagram of a power distribution system based on a low-voltage relay in one embodiment.
Reference numerals illustrate:
110. a controller; 120. an array low voltage relay; 130. the positive electrode high-voltage power supply input end; 140. the negative electrode high-voltage power supply input end; 150. a positive DC bus; 160. a negative DC bus; 170. the positive electrode outputs a bus copper plate; 180. negative electrode output bus copper plate; 190. a copper plate assembly interface is connected in series; 210. and (5) installing the fixing holes.
Detailed Description
In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the system, device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.
In one embodiment, as shown in fig. 1, the present application provides a low voltage relay-based power distribution system, which may include: the controller 110, the array low-voltage relay 120, the positive high-voltage power supply input end 130, the negative high-voltage power supply input end 140, the positive direct current bus 150, the negative direct current bus 160, the positive output bus copper plate 170 and the negative output bus copper plate 180; the controller 110 is respectively connected to the array low-voltage relay 120, the positive high-voltage power supply input terminal 130, and the negative high-voltage power supply input terminal 140, the positive high-voltage power supply input terminal 130 is further connected to the positive dc bus 150, and the negative high-voltage power supply input terminal 140 is further connected to the negative dc bus 160.
The array low-voltage relay 120 comprises a plurality of groups of low-voltage relays, each group of low-voltage relay comprises two low-voltage relays, one ends of contact switches of the two low-voltage relays are respectively connected with the positive direct current bus 150 and the negative direct current bus 160 according to positive and negative directions, and the other ends of the contact switches of the two low-voltage relays are respectively connected with the positive output bus copper plate 170 and the negative output bus copper plate 180 corresponding to the positive direct current bus 150 and the negative direct current bus 160.
And a controller 110 for controlling two low-voltage relays of the same group of low-voltage relays to be simultaneously turned on or off, and controlling at most one group of low-voltage relays of the plurality of groups of low-voltage relays to be in a turned-on state so as to distribute electric power.
In this embodiment, the controller 110 may be a control circuit, and may be disposed at a central position in the system; the array low-voltage relay 120 may be a plurality of groups of low-voltage relays arranged in an array in the system, and may be disposed at an upper side position and a lower side position in the system, respectively; positive high voltage supply input 130 may be located at a left position in the system; negative high voltage supply input 140 may be placed at a right position in the system; the positive dc bus 150 may be disposed at an upper position in the system; the negative dc bus 160 may be disposed in a lower position in the system; the positive output bus bar copper plate 170 may be positioned at the uppermost position in the system; the negative output bus bar copper plate 180 may be disposed at a lowermost position in the system.
For example, the power distribution system is constructed as a sheet metal structure, and is designed as a plug frame, the array low-voltage relay 120 can be horizontally inserted into the plug frame, the low-voltage relay is arranged in a matrix form inside the system, and the positive output bus bar copper plate 170 and the negative output bus bar copper plate 180 are respectively arranged on the left and the right in the vertical direction, for example, the positive output bus bar copper plate 170 is arranged on the left side, the negative output bus bar copper plate 180 is arranged on the right side, and each path of bus bar copper plate is connected with a nut accessory interface on the relay assembly by using screws.
Specifically, the controller 110 switches off a group of low-voltage relays corresponding to the 2 paths of direct current buses involved in power switching through adjusting the control logic of power switching, then controls other groups of relays to complete the conduction of the 2 paths of direct current loops, and after the adjustment is completed, resumes the output of the power distribution system, and the power is stably switched. The power switching is finished in the mode, when the switching relay acts, no voltage and current exist on the direct current bus, and the risk of high-voltage arcing can be avoided, so that the switching on and switching off of 2 direct current loops can be realized by using the low-voltage relay.
In addition, the original power distribution is that a plurality of charging modules are 1 group and are simultaneously turned on or turned off, the rated current requirement on the switching relay is higher, in the embodiment, after the minimum particles of the power distribution are adjusted, a single module is used as the minimum power particles, in the state, the rated current requirement on the switching low-voltage relay is obviously reduced, and the rated current of the switching relay can be reduced.
The above-mentioned electric power distribution system based on low-voltage relay includes: the controller 110, the array low-voltage relay 120, the positive high-voltage power supply input end 130, the negative high-voltage power supply input end 140, the positive direct current bus 150, the negative direct current bus 160, the positive output bus copper plate 170 and the negative output bus copper plate 180; the controller 110 is respectively connected with the array low-voltage relay 120, the positive high-voltage power supply input end 130 and the negative high-voltage power supply input end 140, the positive high-voltage power supply input end 130 is also connected with the positive direct-current bus 150, and the negative high-voltage power supply input end 140 is also connected with the negative direct-current bus 160; the array low-voltage relay 120 comprises a plurality of groups of low-voltage relays, each group of low-voltage relay comprises two low-voltage relays, one ends of contact switches of the two low-voltage relays are respectively connected with the positive direct-current bus 150 and the negative direct-current bus 160 according to positive and negative directions, and the other ends of the contact switches of the two low-voltage relays are respectively connected with the positive output bus copper plate 170 and the negative output bus copper plate 180 corresponding to the positive direct-current bus 150 and the negative direct-current bus 160; the controller 110 is used to control two low-voltage relays in the same group of low-voltage relays to be simultaneously turned on or off, and to control at most one group of low-voltage relays in the plurality of groups of low-voltage relays to be in a turned-on state so as to distribute electric power. According to the scheme, the arrangement of cables is reduced through the internal layout of the low-voltage relay in the system, the internal structure of the charging pile is simplified, the complexity of the internal structure of the charging pile is reduced, the internal size of the whole space of the power distribution system is optimized, the size of a cabinet of the charging pile rectifying cabinet is indirectly reduced, the use of sheet metal copper plates is reduced while the size is reduced, the material cost of the whole machine is reduced, in addition, the low-voltage relay and bus copper plates are standard components, the difficulty of production, manufacture and after-sale maintenance is reduced, the production efficiency is remarkably improved, the waste of manpower resources is reduced, and compared with the traditional power (electric power) distribution scheme, the rated voltage of the relay is low, the rated current is small, so that the whole material cost and the resource consumption of a power distribution unit are remarkably reduced.
In one embodiment, the controller 110 is connected to the coils of each of the array of low voltage relays 120; and a controller 110 for controlling the two low-voltage relays of the same group to be simultaneously turned on or off through the coils of the two low-voltage relays of the same group.
In this embodiment, each low voltage relay may include a coil therein.
Specifically, the controller 110 is directly connected to the coils of each low-voltage relay in the array low-voltage relay 120, and controls the two low-voltage relays in the same group of low-voltage relays to be simultaneously turned on or off by controlling the coils of the two low-voltage relays in the same group of low-voltage relays to pass through or lose power.
According to the technical scheme of the embodiment, the coils of the two low-voltage relays in the same group of low-voltage relays are controlled, so that the two low-voltage relays in the same group of low-voltage relays are controlled to be closed or opened simultaneously, and the controller 110 is beneficial to accurately controlling the two low-voltage relays in the same group of low-voltage relays to be closed or opened simultaneously.
In one embodiment, the controller 110 is configured to simultaneously energize or simultaneously de-energize the coils of the two low-voltage relays in the same group of low-voltage relays such that, in the case where the coils of the two low-voltage relays in the same group of low-voltage relays are simultaneously energized, the two low-voltage relays in the same group of low-voltage relays are simultaneously closed, or, in the case where the coils of the two low-voltage relays in the same group of low-voltage relays are simultaneously de-energized, the two low-voltage relays in the same group of low-voltage relays are simultaneously opened.
Specifically, the controller 110 simultaneously energizes or de-energizes the coils of the two low-voltage relays in the same group of low-voltage relays, so that the two low-voltage relays in the same group of low-voltage relays are simultaneously closed when the coils of the two low-voltage relays in the same group of low-voltage relays are simultaneously energized, or the two low-voltage relays in the same group of low-voltage relays are simultaneously opened when the coils of the two low-voltage relays in the same group of low-voltage relays are simultaneously de-energized.
The power distribution system can be configured into a 360KW 6-gun output high-power charging pile rectifying cabinet, a plurality of power distribution systems are connected in series, so that full-matrix flexible power dynamic switching of the power distribution systems on 6 paths of direct current output buses is realized, namely, when any power distribution system is idle in the direct current output loop, power can be switched to any one of the direct current output buses with requirements, and the charging pile rectifying cabinet is superior to a traditional high-voltage direct current contactor power distribution unit in the aspects of material cost, overall size, convenience in production and maintenance and the like.
According to the technical scheme of the embodiment, the controller 110 is used for controlling the coils of the two low-voltage relays in the same group of connected low-voltage relays to be simultaneously electrified or simultaneously powered off, so that the two low-voltage relays in the same group of low-voltage relays are accurately correspondingly controlled to be simultaneously closed or simultaneously opened, and the controller 110 is beneficial to accurately controlling the two low-voltage relays in the same group of low-voltage relays to be simultaneously closed or opened.
In one embodiment, the system further comprises: a plurality of series copper card assembly interfaces 190; a serial copper card assembly interface 190 for connecting multiple systems in series.
In this embodiment, the number of the serial copper card assembly interfaces 190 may be 4, and may include a first serial copper card assembly interface, a second serial copper card assembly interface, a third serial copper card assembly interface, and a fourth serial copper card assembly interface.
Specifically, each power distribution system may include a plurality of serial copper card assembly interfaces 190, where the plurality of serial copper card assembly interfaces 190 may be used to connect the plurality of power distribution systems in series for a related operation.
According to the technical scheme, the plurality of systems are connected in series through the plurality of serial copper plate assembly interfaces 190 in the systems, so that the plurality of power distribution systems are facilitated to perform associated work, full-matrix flexible dynamic switching of the plurality of power distribution systems to the 6-path direct-current output buses is realized, namely, when any power distribution system is idle in the direct-current output circuit, power can be switched to any direct-current output bus with any requirement, and the efficiency of the power distribution of the system is improved.
In one embodiment, the plurality of series copper card assembly interfaces 190 includes a first series copper card assembly interface, a second series copper card assembly interface, a third series copper card assembly interface, and a fourth series copper card assembly interface; the first series copper plate assembly interface is connected with one end of the positive DC bus 150, the second series copper plate assembly interface is connected with the other end of the positive DC bus 150, the third series copper plate assembly interface is connected with one end of the negative DC bus 160, and the fourth series copper plate assembly interface is connected with the other end of the negative DC bus 160.
In this embodiment, the first serial copper card assembly interface may be disposed on the upper left side of the system; the second series copper card assembly interface may be disposed on an upper right side of the system; the third series copper card assembly interface may be disposed on a lower left side of the system; a fourth series copper card assembly interface may be provided on the lower right side of the system.
Specifically, 4 serial copper card assembly interfaces 190 are provided in the system, which are a first serial copper card assembly interface, a second serial copper card assembly interface, a third serial copper card assembly interface and a fourth serial copper card assembly interface, and are respectively connected with two ends of the positive direct current bus 150 and two ends of the negative direct current bus 160.
According to the technical scheme, the first serial copper plate assembly interface, the second serial copper plate assembly interface, the third serial copper plate assembly interface and the fourth serial copper plate assembly interface are respectively connected with the two ends of the positive direct current bus 150 and the two ends of the negative direct current bus 160, so that a plurality of power distribution systems are connected in series, full-matrix flexible power dynamic switching of the 6-path direct current output buses by the plurality of power distribution systems is realized, namely, when any power distribution system is idle in the direct current output loop, power can be switched to any one direct current output bus with requirements, the material cost, the resource waste and the whole machine size of the rectifier cabinet of a charging pile are reduced, and the production and maintenance convenience is improved.
In one embodiment, the system further comprises: a plurality of mounting fixing holes 210; the mounting fixture holes 210 are provided at angular positions in the system.
In this embodiment, the number of the mounting fixing holes 210 in each system may be 4, and may be respectively disposed at the top corner positions in the system.
According to the technical scheme of the embodiment, the plurality of mounting and fixing holes 210 are formed in the power distribution system, so that the plurality of power distribution systems are fixedly mounted in the charging pile through the plurality of mounting and fixing holes 210, and the reliability and the firmness of mounting the power distribution systems are improved.
In one embodiment, the system further comprises: an external communication component; the external communication component is in communication connection with the controller 110; and the external communication component is used for external communication.
In this embodiment, the external communication component may be disposed at a central location of the power distribution system.
Specifically, an external communication component is disposed in the power distribution system, so that the external communication component is in communication connection with the controller 110, and the power distribution system can communicate with the outside through the external communication component.
According to the technical scheme, the external communication component is arranged in the power distribution system, so that the power distribution system can communicate with the outside through the external communication component, communication between the power distribution system and other power distribution systems and between the power distribution system and the charging stack is facilitated, and the functionality and operability of the power distribution system are improved.
In one embodiment, the low-voltage relays in the array of low-voltage relays 120 are mounted on the system in a 6-group configuration.
In this embodiment, the array low-voltage relay 120 provided in the power distribution system is 6 groups of low-voltage relays, wherein each group of low-voltage relays includes two low-voltage relays, i.e., the number of low-voltage relays provided in the power distribution system is 12.
Specifically, the low-voltage relays in the array low-voltage relay 120 are installed on the power distribution system according to 6 groups of distribution, each group of low-voltage relays can be respectively arranged on the upper side and the lower side in the power distribution system, then 6 low-voltage relays are arranged on the upper side in the power distribution system, 6 low-voltage relays are arranged on the lower side in the power distribution system, and all the low-voltage relays are arranged in the power distribution system in an array distribution mode.
According to the technical scheme of the embodiment, the low-voltage relays in the array low-voltage relay 120 are arranged on the system according to 6 groups, part of the low-voltage relays are replaced by copper plates on the basis of the array low-voltage relay 120 according to the low-voltage relay state of the actual switching process, and the copper plates are directly conducted to the direct-current bus, so that a full-matrix-like power distribution system superior to the array low-voltage relay 120 is formed, the number of relays is reduced, material resource waste is reduced, the low-voltage relays are reduced in groups on a control layer, the number of control points is reduced, and control logic is simpler.
In one embodiment, the system is a system configured in a 360kw 6 gun output charging stack rectifier.
Specifically, the power distribution system can be configured into a 6-gun output high-power charging pile rectifying cabinet with 360KW (kilowatts), and the power distribution systems are connected in series, so that the full-matrix-like flexible power dynamic switching of the power distribution systems to the 6-path direct-current output buses is realized.
According to the technical scheme, the power distribution systems are configured in the charging pile rectifying cabinet with the output of 6 guns of 360 kilowatts, and the power distribution systems are connected in series, so that the dynamic switching of the power distribution systems to the quasi-full-matrix flexible power of the 6-path direct-current output buses is realized, namely, when any power distribution system is idle in the direct-current output circuit, power (electric power) can be switched to any one direct-current output bus with requirements, and the accuracy of power distribution is improved.
In one embodiment, the system is constructed as a sheet metal structure of a plug frame type, and the array low voltage relay 120 is mounted on the system in a manner of being horizontally inserted into the plug frame.
Specifically, the structure of the power distribution system is a sheet metal structure, the power distribution system is designed into a plug frame type, the array low-voltage relay 120 can be horizontally inserted into the plug frame, and each bus copper plate is communicated with a nut accessory interface on the relay assembly through a screw.
According to the technical scheme, the structure of the power distribution system is set to be a sheet metal structure of a plug frame type, and the array low-voltage relay 120 is arranged on the power distribution system in a mode of horizontally inserting the plug frame, so that the array low-voltage relay 120 can be fixedly arranged in the power distribution system, and the reliability and firmness of arranging the array low-voltage relay 120 are improved.
It should be noted that, the user information (including, but not limited to, user equipment information, user personal information, etc.) and the data (including, but not limited to, data for analysis, stored data, presented data, etc.) referred to in the present application are information and data authorized by the user or sufficiently authorized by each party, and the collection, use and processing of the related data are required to comply with the related laws and regulations and standards of the related countries and regions.
In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.
Claims (10)
1. A low voltage relay-based power distribution system, the system comprising: the device comprises a controller, an array low-voltage relay, an anode high-voltage power supply input end, a cathode high-voltage power supply input end, an anode direct current bus, a cathode direct current bus, an anode output bus copper plate, a cathode output bus copper plate and a plurality of serial copper plate assembly interfaces; the controller is respectively connected with the array low-voltage relay, the positive high-voltage power supply input end and the negative high-voltage power supply input end, the positive high-voltage power supply input end is also connected with the positive direct current bus, and the negative high-voltage power supply input end is also connected with the negative direct current bus; the controller is connected with the coil of each low-voltage relay in the array of low-voltage relays;
the array low-voltage relays comprise a plurality of groups of low-voltage relays which are arranged in an array in the system, each group of low-voltage relays comprises two low-voltage relays, one ends of contact switches of the two low-voltage relays are respectively connected with the positive direct-current bus and the negative direct-current bus according to positive and negative directions, and the other ends of the contact switches of the two low-voltage relays are respectively connected with the positive output bus copper plate and the negative output bus copper plate corresponding to the positive direct-current bus and the negative direct-current bus; the serial copper plate assembly interface is used for connecting a plurality of the systems in series;
the controller is used for controlling the coils of the two low-voltage relays in the same group of low-voltage relays to be simultaneously electrified or simultaneously de-electrified, so that the two low-voltage relays in the same group of low-voltage relays are simultaneously closed under the condition that the coils of the two low-voltage relays in the same group of low-voltage relays are simultaneously electrified, or the two low-voltage relays in the same group of low-voltage relays are simultaneously opened under the condition that the coils of the two low-voltage relays in the same group of low-voltage relays are simultaneously de-electrified; and controlling at most one low-voltage relay in the plurality of groups of low-voltage relays to be in a closed state so as to distribute power.
2. The system of claim 1, wherein the controller is a control circuit, the controller being disposed at a central location in the system.
3. The system of claim 1, wherein the plurality of sets of low voltage relays are disposed in an upper position and a lower position, respectively, in the system.
4. The system of claim 1, wherein the number of serial copper card assembly interfaces is 4.
5. The system of claim 4, wherein the plurality of series copper card assembly interfaces comprises a first series copper card assembly interface, a second series copper card assembly interface, a third series copper card assembly interface, and a fourth series copper card assembly interface; the first serial copper plate assembly interface is connected with one end of the positive direct current bus, the second serial copper plate assembly interface is connected with the other end of the positive direct current bus, the third serial copper plate assembly interface is connected with one end of the negative direct current bus, and the fourth serial copper plate assembly interface is connected with the other end of the negative direct current bus.
6. The system according to any one of claims 1 to 5, further comprising: a plurality of mounting fixing holes; the mounting fixture holes are located at angular positions in the system.
7. The system according to any one of claims 1 to 5, further comprising: an external communication component; the external communication component is in communication connection with the controller;
the external communication component is used for external communication.
8. The system of any one of claims 1 to 5, wherein the low voltage relays in the array of low voltage relays are mounted on the system in a 6-group configuration.
9. The system of any one of claims 1 to 5, wherein the system is a system configured in a 360kw 6-gun output charging stack rectifier.
10. The system of any one of claims 1 to 5, wherein the system is constructed as a sheet metal structure of a plug frame type, and the array low voltage relay is mounted on the system in a manner of being horizontally inserted into the plug frame.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310007839.7A CN116031858B (en) | 2023-01-04 | 2023-01-04 | Power distribution system based on low-voltage relay |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310007839.7A CN116031858B (en) | 2023-01-04 | 2023-01-04 | Power distribution system based on low-voltage relay |
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| CN116031858A CN116031858A (en) | 2023-04-28 |
| CN116031858B true CN116031858B (en) | 2023-12-29 |
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| CN116031858A (en) | 2023-04-28 |
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