CN212486166U - Power distributor applied to double-gun direct-current charging pile - Google Patents
Power distributor applied to double-gun direct-current charging pile Download PDFInfo
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- CN212486166U CN212486166U CN202021341709.5U CN202021341709U CN212486166U CN 212486166 U CN212486166 U CN 212486166U CN 202021341709 U CN202021341709 U CN 202021341709U CN 212486166 U CN212486166 U CN 212486166U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- 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
Abstract
The application discloses be applied to power distribution unit that stake is filled to double-gun direct current is applied to the technical field that charges for solve current double-gun direct current and fill electric pile and have the technical problem of wasting of resources. The application provides be applied to electric pile's of double-barreled direct current power distribution ware is including the inside module of charging of electric pile, anodal generating line and negative pole generating line, charge controller, anodal high voltage direct current contactor and negative pole high voltage direct current contactor, be equipped with anodal high voltage direct current contactor on this anodal generating line, be equipped with negative pole high voltage direct current contactor on this negative pole generating line, this anodal high voltage direct current contactor is connected with the anodal of the module of charging respectively and the output of anodal generating line, the output of this anodal generating line forms the anodal input of the first rifle of charging of outside respectively and the anodal input of the rifle of outside second charging, this negative pole high voltage direct current contactor is connected with the negative pole of the module of charging respectively and the output of negative pole generating line, this.
Description
Technical Field
The application relates to the technical field of charging, especially, relate to a be applied to power distribution unit of stake of double-gun direct current charging.
Background
At present, in the conventional power distributor applied to the double-gun direct-current charging pile, the power output of two guns is either evenly distributed, namely, each outputs half power, or one gun outputs full power, the other gun does not output power, i.e. only two gears of half and full power output exist per gun, in which case when the vehicle BMS (Battery Management System) demand is large, such as 80KW, the output power of the charging pile can only output 60KW or 120KW, when the charging pile outputs 60KW, when the charging power is insufficient and the charging pile can be fully charged for a long time, when the charging pile outputs 120KW, to match the requirements of the vehicle BMS battery management system, only the power output 80KW can be reduced, since the output of the other gun is switched over on the physical connection at this time, power can no longer be output, resulting in a waste of 40KW of resources.
To sum up, there is output gear too little in current two rifle direct current of integral type fills electric pile's power distribution, leads to being difficult to satisfy the technical problem of vehicle BMS battery management system demand of charging, still can lead to the wasting of resources and the charge time overlength of direct current stake of filling simultaneously.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a be applied to power distribution unit of stake of electric is filled to two rifle direct currents to solve current two rifle direct currents and fill electric pile and have extravagant technical problem of resource.
The utility model provides a power distributor applied to a double-gun direct current charging pile, which comprises a plurality of charging modules, an anode bus and a cathode bus inside the charging pile, and also comprises a charging controller, a plurality of anode high-voltage direct current contactors and a plurality of cathode high-voltage direct current contactors, wherein the anode bus is provided with the anode high-voltage direct current contactor, the cathode bus is provided with the cathode high-voltage direct current contactor, the anode high-voltage direct current contactor is respectively connected with the anode of the charging module and the output end of the anode bus, the output end of the anode bus respectively forms the anode input end of an external first charging gun and the anode input end of an external second charging gun, the cathode high-voltage direct current contactor is respectively connected with the cathode of the charging module and the output end of the cathode bus, the output end of the cathode bus respectively forms the cathode output end of the first charging gun and the cathode output end of the second charging gun, the charging controller is connected with each positive high-voltage direct current contactor and each negative high-voltage direct current contactor.
Further, still include the fuse, the input of this fuse is connected with the positive pole of this module of charging, and the output and this positive pole high voltage direct current contactor of this fuse are connected.
Furthermore, the positive bus comprises a plurality of positive branches, each positive branch is connected with the positive electrode of at least one charging module, the number of the fuses is the same as that of the positive branches, and each fuse is connected with the positive electrode of the charging module on the corresponding positive branch and the positive high-voltage direct-current contactor respectively.
Furthermore, the negative bus comprises a plurality of negative branches, the number of the negative branches is the same as that of the positive branches and is symmetrically distributed, the number of the positive high-voltage direct-current contactors is the same as that of the negative high-voltage direct-current contactors, and the positive high-voltage direct-current contactors on the positive bus and the negative high-voltage direct-current contactors on the negative bus are symmetrically distributed.
Furthermore, the positive bus comprises four positive branches, namely a first charging gun first positive branch, a first charging gun second positive branch, a second charging gun first positive branch and a second charging gun second positive branch, the number of the fuses is four, namely a first fuse, a second fuse, a third fuse and a fourth fuse, the first fuse is respectively connected with the positive pole of the charging module on the first charging gun first positive branch, the positive pole high-voltage direct current contactor and the positive pole input end of the external first charging gun, the second fuse is respectively connected with the positive pole of the charging module on the first charging gun second positive branch and the positive pole high-voltage direct current contactor, the third fuse is respectively connected with the positive pole of the charging module on the second charging gun first positive branch, the positive pole contactor and the positive pole input end of the external second charging gun, the fourth fuse is respectively connected with the anode of the charging module on the second anode branch of the second charging gun and the anode high-voltage direct-current contactor.
Furthermore, the number of the positive high voltage direct current contactors is five, and the positive high voltage direct current contactors are respectively a first positive high voltage direct current contactor, a second positive high voltage direct current contactor, a third positive high voltage direct current contactor, a fourth positive high voltage direct current contactor and a fifth positive high voltage direct current contactor, the first positive high voltage direct current contactor is respectively connected with the first fuse, the second positive high voltage direct current contactor and the positive input end of the external first charging gun, the second positive high voltage direct current contactor is respectively connected with the second fuse, the third positive high voltage direct current contactor and the positive input end of the external second charging gun, the third positive high voltage direct current contactor is respectively connected with the third fuse, the fourth positive high voltage direct current contactor and the positive input end of the external second charging gun, the fourth positive high-voltage direct current contactor is connected with the fourth fuse and the positive input end of the external first charging gun respectively, and the fifth positive high-voltage direct current contactor is connected with the first fuse, the first positive high-voltage direct current contactor, the positive input end of the external first charging gun and the positive input end of the external second charging gun respectively.
The negative bus comprises four negative branches, namely a first negative branch of a first charging gun, a second negative branch of the first charging gun, a first negative branch of the second charging gun and a second negative branch of the second charging gun, the number of the negative high-voltage direct-current contactors is five, namely a first negative high-voltage direct-current contactor, a second negative high-voltage direct-current contactor, a third negative high-voltage direct-current contactor, a fourth negative high-voltage direct-current contactor and a fifth negative high-voltage direct-current contactor, the first negative high-voltage direct-current contactor is respectively connected with a negative electrode of a charging module on the first negative branch of the first charging gun, a negative electrode of a charging module on the second negative branch of the first charging gun, the second negative high-voltage direct-current contactor is connected with a negative electrode output end of the first charging gun, and the second negative high-voltage direct-current contactor is respectively connected with a negative electrode of a charging module on the second negative branch of the first charging gun, a, The negative pole of the charging module on the first negative pole branch of the second charging gun, the third negative pole high-voltage direct current contactor and the negative pole output end of the second charging gun are connected, the third negative high-voltage direct current contactor is respectively connected with the negative electrode of the charging module on the first negative electrode branch of the second charging gun, the negative electrode of the charging module on the second negative electrode branch of the second charging gun, the fourth negative high-voltage direct current contactor and the negative electrode output end of the second charging gun, the fourth negative pole high voltage direct current contactor is respectively connected with the negative pole of the charging module on the second negative pole branch of the second charging gun and the negative pole output end of the first charging gun, the fifth negative electrode high-voltage direct-current contactor is respectively connected with the negative electrode of the charging module on the first negative electrode branch of the first charging gun, the first negative electrode high-voltage direct-current contactor, the negative electrode output end of the first charging gun and the negative electrode output end of the second charging gun.
Furthermore, the number of the charging modules includes six, which are respectively a first charging module, a second charging module, a third charging module, a fourth charging module, a fifth charging module and a sixth charging module, the first charging module is connected with the second charging module in series, the anode of the first charging module and the anode of the second charging module are respectively connected with the first anode branch of the first charging gun, the cathode of the first charging module and the cathode of the second charging module are respectively connected with the first cathode branch of the first charging gun, the anode of the third charging module is connected with the second anode branch of the first charging gun, the cathode of the third charging module is connected with the second cathode branch of the first charging gun, the fourth charging module is connected with the fifth charging module in series, the anode of the fourth charging module and the anode of the fifth charging module are respectively connected with the first anode branch of the second charging gun, the negative pole of the fourth charging module and the negative pole of the fifth charging module are respectively connected with the first negative pole branch of the second charging gun, the positive pole of the sixth charging module is connected with the second positive pole branch of the second charging gun, and the negative pole of the sixth charging module is connected with the second negative pole branch of the second charging gun.
Further, still include first current divider, first direct current meter, second current divider and second direct current meter, this first current divider is connected with this first direct current meter, this first current divider respectively with this charge the negative pole of module, this negative pole high voltage direct current contactor and this first rifle that charges the negative pole output end is connected, this second current divider is connected with this second direct current meter, this second current divider respectively with this charge the negative pole of module, this negative pole high voltage direct current contactor and this second rifle that charges the negative pole output end is connected.
Further, still include first high voltage direct current contactor and second high voltage direct current contactor, this first high voltage direct current contactor respectively with this module of charging the positive pole, this anodal high voltage direct current contactor and this outside first rifle that charges positive input end connection, this second high voltage direct current contactor respectively with this module of charging the positive pole, this anodal high voltage direct current contactor and this outside second rifle that charges positive input end connection.
The utility model provides a power distributor for double-gun DC charging pile, through set up anodal high voltage direct current contactor and negative pole high voltage direct current contactor respectively on anodal generating line and negative pole generating line, connect the charge controller with every this anodal high voltage direct current contactor and every this negative pole high voltage direct current contactor, and through this charge controller to the break-make of every anodal high voltage direct current contactor and negative pole high voltage direct current contactor control, because this anodal high voltage direct current contactor and negative pole high voltage direct current contactor set up between the output of charging module and generating line and with this charging module connection, when not having through anodal high voltage direct current contactor and negative pole high voltage direct current contactor disconnection between the output of charging module and generating line, this charging module exports charging power, when through anodal high voltage direct current contactor and negative pole high voltage direct current contactor disconnection between the output of charging module and generating line, the corresponding charging module does not output electric energy, so that the power distributor applied to the double-gun direct-current charging pile can realize power distribution, and the problem of resource waste is avoided due to no electric energy input on the charging gun which does not output the charging power, and the utilization rate of resources is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a block diagram of a circuit structure of a power distributor applied to a dual-gun dc charging pile according to an embodiment of the present application;
fig. 2 is a block diagram of a circuit structure of a power distributor applied to a dual-gun dc charging pile according to another embodiment of the present disclosure;
fig. 3 is a schematic diagram of a circuit structure applied to a positive bus of a power distributor of a dual-gun dc charging pile according to an embodiment of the present disclosure;
fig. 4 is a schematic circuit diagram of a negative bus bar of a power distributor applied to a dual-gun dc charging pile according to an embodiment of the present disclosure.
Wherein the reference numerals in the drawings denote the following parts:
m1, a first charging module; m2, a second charging module; m3, a third charging module; m4, a fourth charging module; m5, a fifth charging module; m6, a sixth charging module; k11, a first positive high voltage direct current contactor; k12, a second positive high voltage direct current contactor; k13, a third positive high-voltage direct-current contactor; k14, a fourth positive high voltage direct current contactor; k15, a fifth positive high-voltage direct-current contactor; k21, a first negative pole high voltage direct current contactor; k22, a second negative pole high voltage direct current contactor; k23, a third negative pole high voltage direct current contactor; k24, a fourth negative pole high voltage direct current contactor; k25, a fifth negative pole high-voltage direct-current contactor; f1, a first fuse; f2, second fuse; f3, third fuse; f4, fourth fuse; k1, a first high voltage direct current contactor; k2, a second high-voltage direct-current contactor; d1, a first shunt; d2, a second shunt; PJ1, a first direct current meter; PJ2, a second direct current meter; a +, the positive input end of the external first charging gun; a-, a negative input end of an external first charging gun; b +, the positive input end of the external second charging gun; b-, and the negative electrode input end of the external second charging gun.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Implementations of the present application are described in detail below with reference to the following detailed drawings:
fig. 1 is a circuit structure block diagram of a power distributor applied to a double-gun dc charging pile in an embodiment of the present application, the following description is provided in detail with reference to fig. 1, and the power distributor applied to a double-gun dc charging pile according to an embodiment of the present invention includes a plurality of charging modules inside a charging pile, an anode bus and a cathode bus, in fig. 1, "charging module +" represents an anode of the charging module, "charging module-" represents a cathode of a corresponding charging module, the power distributor applied to a double-gun dc charging pile further includes a charging controller, a plurality of anode high-voltage direct-current contactors and a plurality of cathode high-voltage direct-current contactors, the anode bus is provided with the anode high-voltage direct-current contactor, the cathode bus is provided with the cathode high-voltage direct-current contactor, the anode high-voltage direct-current contactor is respectively connected with an anode of the charging module and an output end of the anode bus The output end of the positive bus bar forms a positive input end of an external first charging gun and a positive input end of an external second charging gun respectively, the negative high-voltage direct-current contactor is connected with the negative electrode of the charging module and the output end of the negative bus bar respectively, the output end of the negative bus bar forms a negative output end of the first charging gun and a negative output end of the second charging gun respectively, and the charging controller is connected with each positive high-voltage direct-current contactor and each negative high-voltage direct-current contactor;
the charging controller is used for controlling the on-off of the positive high-voltage direct-current contactor and the negative high-voltage direct-current contactor according to the target output power of the first charging gun and the target output power of the second charging gun, so that the output end of the first charging gun and the output end of the second charging gun can output different charging powers, and the charging controller is used for controlling the gear of the output power of the first charging gun and the gear of the output power of the second charging gun.
Optionally, the positive bus and the negative bus select copper bars as carriers, the positive high-voltage direct-current contactor and the negative high-voltage direct-current contactor may select high-voltage direct-current contactors with product specifications of EVC100A-124D, the positive high-voltage direct-current contactor is shown as K11-K1 n in fig. 1, the negative high-voltage direct-current contactor is shown as K21-K2 n in fig. 1, and the positive high-voltage direct-current contactor and the negative high-voltage direct-current contactor are used for performing combined switching on output power of the charging module, so as to switch output power of different gears.
In the power distributor applied to the double-gun direct-current charging pile, the positive high-voltage direct-current contactor and the negative high-voltage direct-current contactor are respectively arranged on the positive bus and the negative bus, the charging controller is connected with each positive high-voltage direct-current contactor and each negative high-voltage direct-current contactor, and the on-off of each positive high-voltage direct-current contactor and each negative high-voltage direct-current contactor is controlled by the charging controller, because the positive high-voltage direct-current contactor and the negative high-voltage direct-current contactor are arranged between the charging module and the output end of the bus and are connected with the charging module, when the charging module is not disconnected with the positive high-voltage direct-current contactor and the negative high-voltage direct-current contactor between the charging module and the output end of the bus, the charging module outputs charging power, when the charging module is disconnected with, the corresponding charging module does not output electric energy, so that the power distributor applied to the double-gun direct-current charging pile can realize power distribution, and the problem of resource waste is avoided due to no electric energy input on the charging gun which does not output the charging power, and the utilization rate of resources is improved.
Fig. 2 is a block diagram of a circuit structure of a power distributor applied to a dual-gun dc charging pile in another embodiment of the present application, and as shown in fig. 2, the power distributor applied to the dual-gun dc charging pile further includes a fuse, an input end of the fuse is connected to an anode of the charging module, and an output end of the fuse is connected to the anode high-voltage dc contactor.
The fuse can be a fuse with the product specification of RS 309-MF-150A. This embodiment adds the fuse between the positive pole of the module that charges and the outside rifle that charges and makes when instantaneous heavy current passes through rapid fusing, cuts off direct current output, the vehicle safety of protection rear end connection.
As shown in fig. 2, the positive bus includes a plurality of positive branches, each of the positive branches is connected to the positive electrode of at least one of the charging modules, the number of the fuses is the same as that of the positive branches, and each of the fuses is connected to the positive electrode of the charging module on the corresponding positive branch and the positive high-voltage dc contactor.
This embodiment all sets up the fuse through on anodal generating line between the anodal of every branched module of charging and the outside rifle that charges, can fuse rapidly when a certain branch road has instantaneous heavy current to pass through on the one hand, protects this outside rifle and rear end vehicle safety of charging, and on the other hand does not influence other branch roads and charges the power output of the module to outside rifle, improves this power distributor's of being applied to double-gun direct current and fills electric pile security and practicality.
Correspondingly, the negative bus comprises a plurality of negative branches, the number of the negative branches is the same as that of the positive branches and the negative branches are symmetrically distributed, the number of the positive high-voltage direct-current contactors is the same as that of the negative high-voltage direct-current contactors, and the positive high-voltage direct-current contactors on the positive bus and the negative high-voltage direct-current contactors on the negative bus are symmetrically distributed;
the charging controller is used for controlling the positive high-voltage direct-current contactor and the negative high-voltage direct-current contactor which are in symmetrical positions to be switched on and switched off simultaneously.
Optionally, the positive bus bar comprises four positive branches, namely a first charging gun first positive branch, a first charging gun second positive branch, a second charging gun first positive branch and a second charging gun second positive branch, the number of the fuses is four, namely a first fuse F1, a second fuse F2, a third fuse F3 and a fourth fuse F4, the first fuse F1 is respectively connected with the positive pole of the charging module on the first charging gun first positive branch, the positive pole high voltage direct current contactor and the positive pole input end of the external first charging gun, the second fuse F2 is respectively connected with the positive pole of the charging module on the first charging gun second positive branch and the positive pole high voltage direct current contactor, the third fuse F3 is respectively connected with the positive pole of the charging module on the second charging gun first positive branch, the positive pole high voltage direct current contactor and the positive pole input end of the external second charging gun, the fourth fuse F4 is connected to the positive pole of the charging module on the second positive pole branch of the second charging gun and the positive pole high voltage dc contactor respectively.
Optionally, as shown in fig. 2, the power distributor applied to the dual-gun dc charging pile further includes a first current divider D1, a first dc meter PJ1, a second current divider D2, and a second dc meter PJ2, where the first current divider D1 is connected to the first dc meter PJ1, the first current divider D1 is connected to the negative electrode of the charging module, the negative electrode high-voltage dc contactor, and the negative electrode output terminal of the first charging gun, the second current divider D2 is connected to the second dc meter PJ2, and the second current divider D2 is connected to the negative electrode of the charging module, the negative electrode high-voltage dc contactor, and the negative electrode output terminal of the second charging gun.
The product specification of the first flow divider D1 and the second flow divider D2 can be FL-275MV 300A flow divider.
Wherein, set up first shunt D1 and first direct current meter PJ1 at this negative pole output of being applied to the first rifle that charges of power distribution ware of two rifle direct current electric pile, can measure the electric quantity of first rifle output that charges, set up second shunt D2 and second direct current meter PJ2 at the negative pole output of the second rifle that charges, can measure the electric quantity of second rifle output that charges.
Further, this be applied to power distribution ware of double-gun direct current stake of charging still includes first high voltage direct current contactor K1 and second high voltage direct current contactor K2, and this first high voltage direct current contactor K1 is connected with the positive pole of this module of charging, this positive pole high voltage direct current contactor and the positive pole input end of this outside first rifle of charging respectively, and this second high voltage direct current contactor K2 is connected with the positive pole of this module of charging, this positive pole high voltage direct current contactor and the positive pole input end of this outside second rifle of charging respectively.
Optionally, the first high voltage dc contactor K1 and the second high voltage dc contactor K2 may be high voltage dc contactors with a product specification of EVC250A-1 AD. As shown in fig. 3 and 4, the positive high voltage dc contactor, the negative high voltage dc contactor, the first high voltage dc contactor K1 and the second high voltage dc contactor K2 are provided with a control signal line and a feedback signal line, and the control signal line and the feedback signal line are connected to a charging controller of the dc pile.
In one embodiment, the first high voltage dc contactor K1 and the second high voltage dc contactor K2 are connected to the charging controller. The first high-voltage direct-current contactor K1 is used for controlling the on-off of the output power of the first charging gun, and the second high-voltage direct-current contactor K2 is used for controlling the on-off of the output power of the second charging gun.
Fig. 3 is a schematic circuit structure diagram of a positive bus bar of a power distributor applied to a dual-gun dc charging pile according to an embodiment of the present invention, as shown in fig. 3, the number of the positive high-voltage dc contactors is five, and the five positive high-voltage dc contactors are a first positive high-voltage dc contactor K11, a second positive high-voltage dc contactor K12, a third positive high-voltage dc contactor K13, a fourth positive high-voltage dc contactor K14, and a fifth positive high-voltage dc contactor K15, the first positive high-voltage dc contactor K11 is connected to the first fuse F1, the second fuse F2, the second positive high-voltage dc contactor K12, and a positive input end of the external first charging gun, the second positive high-voltage dc contactor K12 is connected to the second fuse F2, the third fuse F3, the third positive high-voltage dc contactor K13, and a positive input end of the external second charging gun, the third positive high-voltage direct-current contactor K13 is connected to the third fuse F3, the fourth fuse F4, the fourth positive high-voltage direct-current contactor K14 and the positive input end of the external second charging gun, the fourth positive high-voltage direct-current contactor K14 is connected to the fourth fuse F4 and the positive input end of the external first charging gun, and the fifth positive high-voltage direct-current contactor K15 is connected to the first fuse F1, the first positive high-voltage direct-current contactor K11, the positive input end of the external first charging gun and the positive input end of the external second charging gun.
In fig. 3, "a +" indicates a positive input terminal of an external first charging gun, and "B +" indicates a positive input terminal of an external second charging gun.
Fig. 4 is a schematic diagram of a circuit structure applied to a negative bus of a power distributor of a dual-gun dc charging pile according to an embodiment of the present invention, as shown in fig. 4, the negative bus includes four negative branches, namely a first negative branch of a first charging gun, a second negative branch of the first charging gun, a first negative branch of the second charging gun, and a second negative branch of the second charging gun, the number of the negative high-voltage dc contactors is five, namely a first negative high-voltage dc contactor K21, a second negative high-voltage dc contactor K22, a third negative high-voltage dc contactor K23, a fourth negative high-voltage dc contactor K24, and a fifth negative high-voltage dc contactor K25, the first negative high-voltage dc contactor K21 is connected to a negative terminal of a charging module on the first negative branch of the first charging gun, a negative terminal of a charging module on the second negative branch of the first charging gun, the second high-voltage dc negative contactor K22, and a negative output terminal of the first charging gun, the second negative high-voltage direct current contactor K22 is connected to the negative electrode of the charging module on the second negative branch of the first charging gun, the negative electrode of the charging module on the first negative branch of the second charging gun, the third negative high-voltage direct current contactor K23 and the negative electrode output terminal of the second charging gun, the third negative high-voltage direct current contactor K23 is connected to the negative electrode of the charging module on the first negative branch of the second charging gun, the negative electrode of the charging module on the second negative branch of the second charging gun, the fourth negative high-voltage direct current contactor K24 and the negative electrode output terminal of the second charging gun, the fourth negative high-voltage direct current contactor K24 is connected to the negative electrode of the charging module on the second negative branch of the second charging gun and the negative electrode output terminal of the first charging gun, the fifth negative high-voltage direct current contactor K25 is connected to the negative electrode of the charging module on the first negative branch of the first charging gun, the charging module on the first negative branch of the first charging gun, The first negative electrode high-voltage direct-current contactor K21, the negative electrode output end of the first charging gun and the negative electrode output end of the second charging gun are connected.
In fig. 4, "a-" represents a negative electrode input terminal of an external first charging gun, and "B-" represents a negative electrode input terminal of an external second charging gun.
Optionally, as shown in fig. 3 and 4, the number of the charging modules includes six, which are a first charging module M1, a second charging module M2, a third charging module M3, a fourth charging module M4, a fifth charging module M5 and a sixth charging module M6, the first charging module M1 is connected in series with the second charging module M2, the positive electrode of the first charging module M1 and the positive electrode of the second charging module M2 are connected to the first positive electrode branch of the first charging gun, the negative electrode of the first charging module M1 and the negative electrode of the second charging module M2 are connected to the first negative electrode branch of the first charging gun, the positive electrode of the third charging module M3 is connected to the second positive electrode branch of the first charging gun, the negative electrode of the third charging module M3 is connected to the second negative electrode branch of the first charging gun, the fourth charging module M4 is connected to the fifth charging module M5, and the fourth charging module M4 is connected in series with the second positive electrode branch of the first charging module M5, and the second charging module M5, respectively The positive pole branch is connected, the negative pole of the fourth charging module M4 and the negative pole of the fifth charging module M5 are respectively connected to the first negative pole branch of the second charging gun, the positive pole of the sixth charging module M6 is connected to the second positive pole branch of the second charging gun, and the negative pole of the sixth charging module M6 is connected to the second negative pole branch of the second charging gun.
A use scenario according to the embodiment is described in detail below by taking the charging pile power as 120KW and the power of each charging module as 20KW as an example.
As shown in fig. 3 and 4, the gun a positive copper plate, the auxiliary positive copper plate A, B gun positive copper plate and the auxiliary positive copper plate B in fig. 3 respectively form four branches of the positive bus, and the gun a negative copper plate, the auxiliary negative copper plate A, B gun negative copper plate and the auxiliary negative copper plate B in fig. 4 respectively form four branches of the positive bus. The first charging module M1 and the second charging module M2 are connected on an A gun positive (negative) pole copper bar in a default mode, the third charging module M3 is connected on an auxiliary positive (negative) pole copper bar A in a default mode, the fourth charging module M4 and the fifth charging module M5 are connected on a B gun positive (negative) pole copper bar in a default mode, the sixth charging module M6 is connected on an auxiliary positive (negative) pole copper bar B in a default mode, namely when positive high-voltage direct-current contactors K11-K15 and negative high-voltage direct-current contactors K21-K25 are kept in a default disconnection failure mode, the output power of the first charging gun A and the output power of the second charging gun B are both 40 KW.
Assuming that the full output power of the whole charging pile is 120KW, the positive high-voltage direct-current contactors K11-K15 and the negative high-voltage direct-current contactors K21-K25 are switched in a combined mode, and the switched output powers of different gears are in the following scenes.
1. When K11, K21, K14, K24, K15 and K25 keep default disconnection and do not act, K12, K22, K13 and K23 are closed, the output power of the first charging gun A is 40KW, and the output power of the second charging gun B is 80 KW;
2. when K11, K21, K13 and K23 are closed, K14, K24, K15, K25, K12 and K22 are kept to be disconnected in a default mode and do not act, the output power of the first charging gun A is 60KW, and the output power of the second charging gun B is 60 KW;
3. when K11, K21, K14 and K24 are closed, K15, K25, K12, K22, K13 and K23 are disconnected by default and do not act, the output power of the first charging gun A is 80KW, and the output power of the second charging gun B is 40 KW;
4. when K11, K21, K14, K24, K15 and K25 are closed and K12, K22, K13 and K23 are disconnected by default and do not act, the output power of the first charging gun A is 120KW, and the output power of the second charging gun B is 0.
To summarize: the power distribution modes of the first charging gun A/the second charging gun B are 40KW/80KW, 60KW/60KW, 80KW/40KW and 120 KW/0. The first charging gun a and the second charging gun B are both capable of switching four gears.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A power distributor applied to a double-gun direct-current charging pile comprises a plurality of charging modules, an anode bus and a cathode bus inside the charging pile, and is characterized by further comprising a charging controller, a plurality of anode high-voltage direct-current contactors and a plurality of cathode high-voltage direct-current contactors, wherein the anode high-voltage direct-current contactors are arranged on the anode bus, the cathode high-voltage direct-current contactors are arranged on the cathode bus, the anode high-voltage direct-current contactors are respectively connected with the anode of the charging modules and the output end of the anode bus, the output end of the anode bus respectively forms the anode input end of an external first charging gun and the anode input end of an external second charging gun, the cathode high-voltage direct-current contactors are respectively connected with the cathode of the charging modules and the output end of the cathode bus, and the output end of the cathode bus respectively forms the cathode output end of the first charging gun and the cathode output end of the second charging gun, the charging controller is connected with each positive electrode high-voltage direct current contactor and each negative electrode high-voltage direct current contactor.
2. The power distributor applied to the double-gun direct-current charging pile according to claim 1, further comprising a fuse, wherein an input end of the fuse is connected with a positive electrode of the charging module, and an output end of the fuse is connected with the positive electrode high-voltage direct-current contactor.
3. The power distributor applied to the double-gun direct-current charging pile according to claim 2, wherein the positive bus comprises a plurality of positive branches, each positive branch is connected with a positive electrode of at least one charging module, the number of the fuses is the same as that of the positive branches, and each fuse is connected with a positive electrode of the charging module on the corresponding positive branch and the positive high-voltage direct-current contactor respectively.
4. The power distributor applied to the double-gun direct-current charging pile according to claim 3, wherein the negative bus comprises a plurality of negative branches, the number of the negative branches is the same as that of the positive branches and is in symmetrical distribution, the number of the positive high-voltage direct-current contactors is the same as that of the negative high-voltage direct-current contactors, and the positive high-voltage direct-current contactors on the positive bus and the negative high-voltage direct-current contactors on the negative bus are in symmetrical distribution.
5. The power distributor applied to the double-gun direct-current charging pile according to claim 3, wherein the positive bus comprises four positive branches, namely a first charging gun first positive branch, a first charging gun second positive branch, a second charging gun first positive branch and a second charging gun second positive branch, the number of the fuses is four, namely a first fuse, a second fuse, a third fuse and a fourth fuse, the first fuse is respectively connected with the positive pole of a charging module on the first charging gun first positive branch, the positive pole high-voltage direct-current contactor and the positive pole input end of the external first charging gun, the second fuse is respectively connected with the positive pole of a charging module on the first charging gun second positive branch and the positive pole high-voltage direct-current contactor, and the third fuse is respectively connected with the positive pole of a charging module on the second charging gun first positive branch, the positive pole high-voltage direct-current contactor, The positive pole high voltage direct current contactor is connected with the positive pole input end of the external second charging gun, and the fourth fuse is respectively connected with the positive pole of the charging module on the second positive pole branch of the second charging gun and the positive pole high voltage direct current contactor.
6. The power distributor as claimed in claim 5, wherein the number of the positive high voltage direct current contactors is five, and the positive high voltage direct current contactors are respectively a first positive high voltage direct current contactor, a second positive high voltage direct current contactor, a third positive high voltage direct current contactor, a fourth positive high voltage direct current contactor and a fifth positive high voltage direct current contactor, the first positive high voltage direct current contactor is respectively connected with the first fuse, the second positive high voltage direct current contactor and the positive input end of the external first charging gun, the second positive high voltage direct current contactor is respectively connected with the second fuse, the third positive high voltage direct current contactor and the positive input end of the external second charging gun, and the third positive high voltage direct current contactor is respectively connected with the third fuse, The fourth fuse fourth anodal high voltage direct current contactor with the positive input end of outside second rifle that charges is connected, fourth anodal high voltage direct current contactor respectively with the fourth fuse with the positive input end of outside first rifle that charges is connected, fifth anodal high voltage direct current contactor respectively with first fuse first anodal high voltage direct current contactor the positive input end of outside first rifle that charges with the positive input end of outside second rifle that charges is connected.
7. The power divider as claimed in claim 6, wherein the negative bus bar comprises four negative branches, namely a first charging gun first negative branch, a first charging gun second negative branch, a second charging gun first negative branch and a second charging gun second negative branch, the number of the negative high voltage direct current contactors is five, namely a first negative high voltage direct current contactor, a second negative high voltage direct current contactor, a third negative high voltage direct current contactor, a fourth negative high voltage direct current contactor and a fifth negative high voltage direct current contactor, the first negative high voltage direct current contactor is connected with the negative terminal of the charging module on the first charging gun first negative branch, the negative terminal of the charging module on the first charging gun second negative branch, the second negative high voltage direct current contactor and the negative terminal of the first charging gun respectively, the second negative electrode high-voltage direct-current contactor is respectively connected with the negative electrode of the charging module on the second negative electrode branch of the first charging gun, the negative electrode of the charging module on the first negative electrode branch of the second charging gun, the third negative electrode high-voltage direct-current contactor and the negative electrode output end of the second charging gun, the third negative electrode high-voltage direct-current contactor is respectively connected with the negative electrode of the charging module on the first negative electrode branch of the second charging gun, the negative electrode of the charging module on the second negative electrode branch of the second charging gun, the fourth negative electrode high-voltage direct-current contactor and the negative electrode output end of the second charging gun, the fourth negative electrode high-voltage direct-current contactor is respectively connected with the negative electrode of the charging module on the second negative electrode branch of the second charging gun and the negative electrode output end of the first charging gun, and the fifth negative electrode high-voltage direct-current contactor is respectively connected with the negative electrode of the charging module on the first negative electrode branch, The first negative electrode high-voltage direct current contactor, the negative electrode output end of the first charging gun and the negative electrode output end of the second charging gun are connected.
8. The power distributor as claimed in claim 7, wherein the number of the charging modules includes six, namely a first charging module, a second charging module, a third charging module, a fourth charging module, a fifth charging module and a sixth charging module, the first charging module is connected with the second charging module in series, the positive electrode of the first charging module and the positive electrode of the second charging module are connected with the first positive electrode branch of the first charging gun respectively, the negative electrode of the first charging module and the negative electrode of the second charging module are connected with the first negative electrode branch of the first charging gun respectively, the positive electrode of the third charging module is connected with the second positive electrode branch of the first charging gun, the negative electrode of the third charging module is connected with the second negative electrode branch of the first charging gun, and the fourth charging module is connected with the fifth charging module in series, the positive pole of the fourth module of charging with the positive pole of the fifth module of charging respectively with the first positive pole branch of the rifle that charges of second is connected, the negative pole of the fourth module of charging with the negative pole of the fifth module of charging respectively with the first negative pole branch of the rifle that charges of second is connected, the positive pole of the sixth module of charging with the rifle second positive pole branch that charges is connected, the negative pole of the sixth module of charging with rifle second negative pole branch that charges is connected.
9. The power distributor applied to the double-gun direct-current charging pile according to claim 1, further comprising a first current divider, a first direct-current meter, a second current divider and a second direct-current meter, wherein the first current divider is connected with the first direct-current meter, the first current divider is respectively connected with the negative electrode of the charging module, the negative electrode high-voltage direct-current contactor and the negative electrode output end of the first charging gun, the second current divider is connected with the second direct-current meter, and the second current divider is respectively connected with the negative electrode of the charging module, the negative electrode high-voltage direct-current contactor and the negative electrode output end of the second charging gun.
10. The power distributor applied to the double-gun direct-current charging pile according to claim 1, further comprising a first high-voltage direct-current contactor and a second high-voltage direct-current contactor, wherein the first high-voltage direct-current contactor is respectively connected with the positive electrode of the charging module, the positive electrode high-voltage direct-current contactor and the positive electrode input end of the external first charging gun, and the second high-voltage direct-current contactor is respectively connected with the positive electrode of the charging module, the positive electrode high-voltage direct-current contactor and the positive electrode input end of the external second charging gun.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN116031858B (en) * | 2023-01-04 | 2023-12-29 | 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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