CN110061549A - A kind of intelligent high-voltage direct-current relay module - Google Patents
A kind of intelligent high-voltage direct-current relay module Download PDFInfo
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- CN110061549A CN110061549A CN201910458509.3A CN201910458509A CN110061549A CN 110061549 A CN110061549 A CN 110061549A CN 201910458509 A CN201910458509 A CN 201910458509A CN 110061549 A CN110061549 A CN 110061549A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J7/70—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries characterised by the mechanical construction
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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
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
本发明提供了一种智能高压直流继电器模块，该智能高压直流继电器模块是将充电桩内部原有的六个继电器进行模块化的集成组装，以及通过同一个控制通讯接口接收不同的控制信号，并根据该控制信号来联动地控制该六个继电器相互之间的工作状态；该智能高压直流继电器模块能够有效地减少该六个继电器进行连接安装的线路布设复杂性，并且还能够减小该六个继电器使用安装时的空间占用率，从而大大地提高充电桩的小型化、集成化和智能化程度。
The invention provides an intelligent high-voltage direct current relay module. The intelligent high-voltage direct current relay module is a modular integrated assembly of the original six relays inside the charging pile, and receives different control signals through the same control communication interface, and The working states of the six relays are controlled in linkage according to the control signal; the intelligent high-voltage DC relay module can effectively reduce the circuit layout complexity of the connection and installation of the six relays, and can also reduce the wiring complexity of the six relays. The relay uses the space occupancy rate during installation, thereby greatly improving the miniaturization, integration and intelligence of the charging pile.
Description
Technical Field
The invention relates to the technical field of electric automobiles, in particular to an intelligent high-voltage direct-current relay module.
Background
With the continuous progress of the production technology of electric automobiles, electric automobiles have gradually become popular and have a certain share in the automobile market. The main obstacle existing in the development of the existing electric automobile is the charging endurance problem of the electric automobile. The electric vehicle is different from a conventional fuel vehicle, and the normal cruising driving of the electric vehicle can be maintained only by performing corresponding charging operation in a specific charging place. In order to match the popularization of electric vehicles, charging piles for providing point power supply for electric vehicles are also gaining more and more attention.
At present, the inside relay that uses of most charging pile all is arranged alone to the range of these relays each other is in disorder, and the space that occupies is also bigger, and this makes current charging pile can't further compress the volume again, thereby makes the volume space that charging pile occupies also great relatively. In addition, these relays inside charging pile are all individually controlled in the working process, different control circuits need to be respectively arranged on each relay, and the control wiring harnesses inside the charging pile for different relays are multiple, so that the relays are subjected to wiring disorder errors. And because the relays inside the charging pile are all separately controlled to work, the relays can not carry out linkage operation on the working states of different relays, so that the existing charging pile can only charge the electric automobile through a single charging mode, the energy consumption of a load end of the electric automobile can not be intelligently distributed in real time, and finally the charging efficiency of the electric automobile can not be improved. It is thus clear that the inside relay of present charging pile all adopts independent circuit to lay the mode and control mode and set up, does not have any circuit connection or operating condition's associativity between the different relays, and this integration installation and control that leads to charging pile unable realization different relays, and this is unfavorable for charging pile toward the development of miniaturization, integration and intelligent direction.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an intelligent high-voltage direct-current relay module which modularizes and integrates six original relays in a charging pile, receives different control signals through the same control communication interface and controls the working states of the six relays in a linkage manner according to the control signals. Because the six relays are simultaneously integrated in the same module, the complexity of circuit layout for connecting and installing the six relays can be effectively reduced, the space occupancy rate of the six relays during installation can also be reduced, the mode of modular integrated assembly of the six relays is different from the mode of independent installation of the six relays in the prior art, the mode of modular integrated assembly adopts special installation pins, different relays can be installed only by aligning the corresponding installation pins for plugging, the installation convenience and the assembly efficiency of the relays are greatly improved, meanwhile, the working safety of the relays in the charging process can also be improved, and the miniaturization, integration and intelligent degrees of the charging pile are greatly improved.
The invention provides an intelligent high-voltage direct-current relay module, which is characterized in that:
the intelligent high-voltage direct-current relay module comprises a control communication interface, a negative bridge relay, a positive bridge relay, a gun 1 main positive relay, a gun 2 main positive relay, a gun 1 main negative relay and a gun 2 main negative relay; wherein,
the control communication interface is used for inputting control signals to the intelligent high-voltage direct-current relay module so as to control the intelligent high-voltage direct-current relay module to adjust the charging process between the external equipment and the first charging power supply and/or the second charging power supply through the first charging gun and/or the second charging gun;
the negative bridge relay, the positive bridge relay, the gun 1 main positive relay, the gun 2 main positive relay, the gun 1 main negative relay and the gun 2 main negative relay are used for controlling the circuit connection relationship among the first charging power supply, the second charging power supply, the first charging gun and the second charging gun;
furthermore, the intelligent high-voltage direct-current relay module also comprises a first charging power supply negative electrode access port and a second charging power supply negative electrode access port; wherein,
the negative electrode access port of the first charging power supply is connected with the negative electrode of the first charging power supply;
the negative electrode access port of the second charging power supply is connected with the negative electrode of the second charging power supply;
two contacts of the negative bridge relay are respectively connected with the negative electrode access port of the first charging power supply and the negative electrode access port of the second charging power supply, so as to control whether the negative electrode access port of the first charging power supply and the negative electrode access port of the second charging power supply are conducted or not;
furthermore, the intelligent high-voltage direct-current relay module also comprises a first charging power supply positive electrode access port and a second charging power supply positive electrode access port; wherein,
the positive electrode access port of the first charging power supply is connected with the positive electrode of the first charging power supply;
the positive electrode access port of the second charging power supply is connected with the positive electrode of the second charging power supply;
two contacts of the positive bridge relay are respectively connected with the positive electrode access port of the first charging power supply and the positive electrode access port of the second charging power supply so as to control whether the positive electrode access port of the first charging power supply and the positive electrode access port of the second charging power supply are conducted or not;
further, the intelligent high-voltage direct-current relay module further comprises a gun 1 negative electrode access port and a gun 2 negative electrode access port; wherein,
the negative electrode access port of the gun 1 is connected with the negative electrode end of the first charging gun;
the negative electrode access port of the gun 2 is connected with the negative electrode end of the second charging gun;
two contacts of the gun 1 main negative relay are respectively connected with the second charging power supply negative electrode access port and the gun 1 negative electrode access port so as to be used for controlling whether the second charging power supply negative electrode access port and the gun 1 negative electrode access port are conducted or not;
two contacts of the gun 2 main negative relay are respectively connected with the first charging power supply negative electrode access port and the gun 2 negative electrode access port so as to be used for controlling whether the first charging power supply negative electrode access port and the gun 2 negative electrode access port are conducted or not;
furthermore, the intelligent high-voltage direct-current relay module also comprises a gun 1 positive electrode access port and a gun 2 positive electrode access port; wherein,
the positive electrode access port of the gun 1 is connected with the positive electrode end of the first charging gun;
the positive electrode access port of the gun 2 is connected with the positive electrode end of the second charging gun;
two contacts of the main positive relay of the gun 1 are respectively connected with the positive electrode access port of the second charging power supply and the positive electrode access port of the gun 1 so as to control whether the positive electrode access port of the second charging power supply and the positive electrode access port of the gun 1 are conducted or not;
two contacts of the gun 2 main positive relay are respectively connected with the first charging power supply positive electrode access port and the gun 2 positive electrode access port so as to be used for controlling whether the first charging power supply positive electrode access port and the gun 2 positive electrode access port are conducted or not;
furthermore, the intelligent high-voltage direct-current relay module also comprises a direct-current power supply and a main chip; wherein,
the control communication interface is connected with the main chip, and the direct-current power supply is used for supplying power to the main chip;
the main chip is used for receiving the control signal and adjusting the conduction states of the negative bridge relay, the positive bridge relay, the gun 1 main positive relay, the gun 2 main positive relay, the gun 1 main negative relay and the gun 2 main negative relay according to the control signal;
the main chip is also used for carrying out at least one of high-voltage detection operation, relay working life state detection operation and insulation detection operation;
or,
the intelligent high-voltage direct-current relay module also comprises a direct-current power supply and a main chip; wherein,
the direct current power supply comprises a 12V direct current power supply, and the main chip comprises an isolation output circuit module and a high-voltage detection circuit module;
the 12V direct-current power supply is used for supplying power to the negative bridge relay, the positive bridge relay, the gun 1 main positive relay, the gun 2 main positive relay, the gun 1 main negative relay and the gun 2 main negative relay so as to control the negative bridge relay, the positive bridge relay, the gun 1 main positive relay, the gun 2 main positive relay, the gun 1 main negative relay and the gun 2 main negative relay to perform switching action;
the 12V direct-current power supply is also used for outputting a 5V direct-current power supply through a triode to supply power to the high-voltage detection circuit module;
the isolation output circuit module is used for realizing power isolation of the direct-current power supply and the first charging power supply and the second charging power supply;
further, the main chip is a Freescale MC9S12 main chip;
or the direct current power supply is a DC12V power supply;
or, the main chip performing the high voltage detection specifically includes,
the direct current power supply supplies power to the high-voltage detection end of the main chip through the isolation voltage of the triode output DC15V,
the isolation output module of the main chip collects signals of a high-voltage end through a low-voltage end and outputs corresponding digital signals to the detection module of the main chip through the AD module of the isolation output module so as to enable the detection module to detect the voltage drop value between the corresponding main contacts of the external equipment,
if the voltage drop value reaches a preset voltage drop value, the main chip sends a control signal to a main controller of the external equipment through a CAN (controller area network) controller so as to control the voltage drop value state between corresponding main contacts of the external equipment and/or the heating state of the main contacts;
further, the operation of the main chip for detecting the working life state of the relay specifically comprises,
the main chip drives the auxiliary contacts of the negative bridge relay, the positive bridge relay, the gun 1 main positive relay, the gun 2 main positive relay, the gun 1 main negative relay or the gun 2 main negative relay by sending pulse width modulation signals, and performs synchronous on-off action with the main contacts of the external equipment,
the contact detection module of the main chip collects the on-off signal from the auxiliary contact and transmits the on-off signal to the operation module of the main chip through an I/O interface,
the operation module analyzes and processes the on-off signal so as to generate a control signal for controlling the on-off switching action of the negative bridge relay, the positive bridge relay, the gun 1 main positive relay, the gun 2 main positive relay, the gun 1 main negative relay or the gun 2 main negative relay,
if the counting result value of the counting processing reaches a preset counting value, the main chip sends a control signal to a main controller of the external equipment through a CAN controller so as to prompt that the corresponding relay reaches the rated service life;
further, the main chip performing the insulation detection operation specifically includes,
the measuring circuit module of the main chip collects corresponding analog high-voltage signals,
the AD module of the main chip converts the analog high-voltage signal into a digital voltage signal,
the main chip determines the insulation characteristic of each relay in the intelligent high-voltage direct-current relay module according to the digital voltage signal;
or,
the main chip is further configured to perform a switching operation related to time division multiplexing on the negative bridge relay, the positive bridge relay, the gun 1 main positive relay, the gun 2 main positive relay, the gun 1 main negative relay, or the gun 2 main negative relay, so that the first charging power supply and the second charging power supply can apply electric energy to the first charging gun and the second charging gun simultaneously or respectively, thereby implementing redistribution of charging electric energy according to the load size of the external device;
furthermore, the intelligent combined relay also comprises a module body, a plurality of connecting copper bars, a plurality of fastening screws and an insulating baffle; wherein,
the negative bridge relay, the positive bridge relay, the gun 1 main positive relay, the gun 2 main positive relay, the gun 1 main negative relay and the gun 2 main negative relay are arranged in the module body;
each of the connecting copper bars is arranged on the module body through the fastening screw;
the connecting copper bar is respectively connected between the negative bridge relay and the gun 1 main negative relay, between the negative bridge relay and the gun 2 main negative relay, between the positive bridge relay and the gun 1 main positive relay, and between the positive bridge relay and the gun 2 main positive relay;
the connecting copper bar is also provided with a first charging power supply positive electrode access port, a second charging power supply positive electrode access port, a first charging power supply negative electrode access port and a second charging power supply negative electrode access port respectively;
the insulating baffle is arranged between the positive leading-out terminal and the negative leading-out terminal corresponding to the intelligent high-voltage direct-current relay module.
Compared with the prior art, the intelligent high-voltage direct-current relay module modularizes and integrates the six original relays in the charging pile, receives different control signals through the same control communication interface, and controls the working states of the six relays in a linkage mode according to the control signals. This intelligent combined relay assembles these six relays through the integrated package mode of foretell, and it has following advantage:
firstly, the intelligent high-voltage direct-current relay module fuses and integrally installs six relays in the same module, so that the occupied space volume of the relays is effectively reduced, and the module is provided with special installation pins to realize the direct plug-in installation of the six relays, so that the assembly efficiency of the six relays is greatly improved;
secondly, compared with the traditional charging pile in which different relays are required to be respectively arranged to be independently controlled, the intelligent high-voltage direct-current relay module receives different control signals by arranging a unified control communication interface, and is also provided with a main chip circuit board which CAN control the working states of different relays in different communication modes such as SR-485 or CAN and the like, so that the input power supply and the signal wire harness arrangement of the intelligent high-voltage direct-current relay module are effectively saved, the hardware cost of the intelligent high-voltage direct-current relay module is further reduced, in addition, a special plug-pull interface is adopted between the main chip circuit board and the control wire harness, and the situation of wiring errors in installation CAN be effectively prevented;
thirdly, the main chip circuit board of the intelligent high-voltage direct-current relay module can adopt more direct and effective control operation for signal acquisition of the relay and different sensors in the relay, wherein the main chip circuit board can carry out on-off control on the circuit of the relay in a positive and negative bilateral control mode, so that the charging operation of the intelligent relay is safer, and misoperation and misjudgment caused by the fact that the relay parameters are not known when an external circuit indirectly controls the relay are avoided;
fourthly, the intelligent high-voltage direct-current relay module is provided with an insulation detection function, real-time insulation detection can be safely and effectively carried out, so that the condition of electric leakage in the charging process is avoided, an energy-saving board circuit is further integrated in the intelligent high-voltage direct-current relay module, the condition of hardware resource waste when a plurality of relays are used can be avoided, the working state and the fault state of the relays can be monitored in real time through the auxiliary contact function of the intelligent high-voltage direct-current relay module, meanwhile, the working life state of the relays can be recorded, so that the maintenance and the maintenance of the relays can be effectively mastered, and the damage caused by the fact that the relays exceed the rated working life and are not replaced in time is avoided;
fifthly, when the intelligent high-voltage direct-current relay module is externally connected with an external equipment load, the energy distribution unit integrated in the intelligent high-voltage direct-current relay module can timely redistribute charging electric energy according to the size of the external equipment load so as to improve the charging efficiency; in addition, the intelligent high-voltage direct-current relay module is additionally provided with the functions of high-voltage detection and temperature detection on the contacts of the relay, so that the situation that the contact terminals of the contacts of the relay are overheated due to overlarge contact resistance can be effectively prevented, the working temperature of the intelligent high-voltage direct-current relay module can be checked in real time, and the intelligent high-voltage direct-current relay module can be kept in a good working state; the intelligent high-voltage direct-current relay module is also provided with an insulating baffle between the positive leading-out terminal and the negative leading-out terminal, so that the phenomenon of arc discharge between the positive leading-out terminal and the negative leading-out terminal is effectively avoided.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a mechanical structure of an intelligent high-voltage direct-current relay module provided by the invention.
Fig. 2 is a schematic circuit structure diagram of an intelligent high-voltage direct-current relay module provided by the invention.
Fig. 3 is an electrical schematic diagram of an intelligent high-voltage direct-current relay module provided by the invention.
Wherein the reference numerals in the drawings have the meanings given respectively: 1. negative bridge relay 2, control communication interface 3, module body 4, positive bridge relay 5, the positive access mouth 6 of first charging source, the positive access mouth 7 of second charging source, fastening screw 8, 1 main positive relay 9 of rifle, 1 positive access mouth 10 of rifle, 2 positive access mouth 11 of rifle, 2 main positive relays 12 of rifle, 2 main negative relays 13 of rifle, 2 negative electrodes of rifle are accessed mouthful 14, 1 negative electrodes of rifle are accessed mouthful 15, 1 main negative relay 16 of rifle, connect copper bar 17, the negative electrodes of second charging source are accessed mouthful 18, 19 of first charging source negative electrode access mouth, 20 of first charging source, 21 of second charging source, 22 of first charging gun, second charging gun
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and fig. 2, a mechanical structure schematic diagram and a circuit structure schematic diagram of an intelligent high-voltage direct-current relay module according to an embodiment of the present invention are respectively shown. This intelligence high voltage direct current relay module is including control communication interface, negative bridge relay, positive bridge relay, 1 main positive relay of rifle, 2 main positive relays of rifle, 1 main negative relay of rifle and 2 main negative relays of rifle.
Preferably, the control communication interface is used for inputting a control signal to the intelligent high-voltage direct-current relay module so as to control the intelligent high-voltage direct-current relay module to adjust a charging process between the external device and the first charging power supply and/or the second charging power supply through the first charging gun and/or the second charging gun;
preferably, the negative bridge relay, the positive bridge relay, the gun 1 main positive relay, the gun 2 main positive relay, the gun 1 main negative relay and the gun 2 main negative relay are used for controlling the mutual circuit connection relationship among the first charging source, the second charging source, the first charging gun and the second charging gun.
Preferably, the intelligent high-voltage direct-current relay module further comprises a first charging power supply negative electrode access port and a second charging power supply negative electrode access port;
preferably, the first charging power supply negative electrode inlet is connected with the negative electrode of the first charging power supply, and the second charging power supply negative electrode inlet is connected with the negative electrode of the second charging power supply;
preferably, two contacts of the negative bridge relay are respectively connected with the first charging power supply negative electrode access port and the second charging power supply negative electrode access port, so as to control whether the first charging power supply negative electrode access port and the second charging power supply negative electrode access port are conducted or not;
preferably, the intelligent high-voltage direct-current relay module further comprises a first charging power supply positive electrode access port and a second charging power supply positive electrode access port;
preferably, the positive electrode inlet of the first charging power supply is connected with the positive electrode of the first charging power supply, and the positive electrode inlet of the second charging power supply is connected with the positive electrode of the second charging power supply;
preferably, two contacts of the positive bridge relay are respectively connected with the positive electrode inlet of the first charging power supply and the positive electrode inlet of the second charging power supply, so as to control whether the positive electrode inlet of the first charging power supply and the positive electrode inlet of the second charging power supply are conducted or not;
preferably, the intelligent high-voltage direct-current relay module further comprises a gun 1 negative electrode access port and a gun 2 negative electrode access port;
preferably, the negative electrode inlet of the gun 1 is connected with the negative electrode end of the first charging gun, and the negative electrode inlet of the gun 2 is connected with the negative electrode end of the second charging gun;
preferably, two contacts of the main negative relay of the gun 1 are respectively connected with the negative electrode access port of the second charging power supply and the negative electrode access port of the gun 1, so as to control whether the negative electrode access port of the second charging power supply and the negative electrode access port of the gun 1 are conducted or not;
preferably, two contacts of the main negative relay of the gun 2 are respectively connected with the negative electrode inlet of the first charging power supply and the negative electrode inlet of the gun 2, so as to control whether the negative electrode inlet of the first charging power supply and the negative electrode inlet of the gun 2 are conducted or not;
preferably, the intelligent high-voltage direct-current relay module further comprises a gun 1 positive electrode access port and a gun 2 positive electrode access port;
preferably, the positive electrode inlet of the gun 1 is connected with the positive electrode end of the first charging gun, and the positive electrode inlet of the gun 2 is connected with the positive electrode end of the second charging gun;
preferably, two contacts of the main positive relay of the gun 1 are respectively connected with the positive electrode inlet of the second charging power supply and the positive electrode inlet of the gun 1, so as to control whether the positive electrode inlet of the second charging power supply and the positive electrode inlet of the gun 1 are conducted or not;
preferably, two contacts of the main positive relay of the gun 2 are respectively connected with the positive electrode inlet of the first charging power supply and the positive electrode inlet of the gun 2, so as to control whether the positive electrode inlet of the first charging power supply and the positive electrode inlet of the gun 2 are conducted or not;
preferably, the intelligent high-voltage direct-current relay module further comprises a direct-current power supply and a main chip;
preferably, the control communication interface is connected with the main chip, and the direct-current power supply is used for supplying power to the main chip;
preferably, the main chip is configured to receive the control signal, and adjust the respective conduction states of the negative bridge relay, the positive bridge relay, the gun 1 main positive relay, the gun 2 main positive relay, the gun 1 main negative relay, and the gun 2 main negative relay according to the control signal;
preferably, the main chip is further used for performing at least one of a high voltage detection operation, a relay working life state detection operation and an insulation detection operation;
preferably, the intelligent high-voltage direct-current relay module further comprises a direct-current power supply and a main chip;
preferably, the dc power supply comprises a 12V dc power supply, and the main chip comprises an isolated output circuit module and a high voltage detection circuit module;
preferably, the 12V dc power supply is used for supplying power to the negative bridge relay, the positive bridge relay, the gun 1 main positive relay, the gun 2 main positive relay, the gun 1 main negative relay and the gun 2 main negative relay, so as to control the negative bridge relay, the positive bridge relay, the gun 1 main positive relay, the gun 2 main positive relay, the gun 1 main negative relay and the gun 2 main negative relay to perform switching actions;
preferably, the 12V dc power supply is further configured to output a 5V dc power supply through a triode to power the high voltage detection circuit module;
preferably, the isolation output circuit module is used for realizing power isolation of the direct current power supply from the first charging power supply and the second charging power supply;
preferably, the master chip is a ciscarl MC9S12 master chip;
preferably, the DC power supply is a DC12V power supply;
preferably, the main chip performing the high voltage detection operation specifically includes,
the direct current power supply supplies power to the high-voltage detection end of the main chip through the isolation voltage of the triode output DC15V,
the isolation output module of the main chip collects signals of a high-voltage end through a low-voltage end and outputs corresponding digital signals to the detection module of the main chip through the AD module of the isolation output module so as to enable the detection module to detect the voltage drop value between the corresponding main contacts of the external equipment,
if the voltage drop value reaches a preset voltage drop value, the main chip sends a control signal to a main controller of the external equipment through a CAN (controller area network) controller so as to control the voltage drop value state between corresponding main contacts of the external equipment and/or the heating state of the main contacts;
preferably, the main chip performing the relay operation life state detection operation specifically includes,
the main chip drives the auxiliary contacts of the negative bridge relay, the positive bridge relay, the gun 1 main positive relay, the gun 2 main positive relay, the gun 1 main negative relay or the gun 2 main negative relay by sending pulse width modulation signals, and carries out synchronous on-off action with the main contacts of the external equipment;
preferably, the contact detection module of the main chip collects on-off signals from the auxiliary contacts, and transmits the on-off signals to the operation module of the main chip through the I/O interface, and the operation module analyzes and processes the on-off signals to generate control signals for controlling the switching actions of the negative bridge relay, the positive bridge relay, the gun 1 main positive relay, the gun 2 main positive relay, the gun 1 main negative relay or the gun 2 main negative relay;
preferably, the operation module further performs counting processing and saving processing on the on-off signal, and if a counting result value of the counting processing reaches a preset counting value, the main chip sends a control signal to a main controller of the external device through the CAN controller to prompt that a corresponding relay reaches a rated service life;
preferably, the main chip performing the insulation detection operation specifically includes,
the measuring circuit module of the main chip collects corresponding analog high-voltage signals,
the AD module of the main chip converts the analog high voltage signal into a digital voltage signal,
the main chip determines the insulation characteristic of each relay in the intelligent high-voltage direct-current relay module according to the digital voltage signal;
preferably, the main chip is further configured to perform a switching operation related to time division multiplexing on the negative bridge relay, the positive bridge relay, the gun 1 main positive relay, the gun 2 main positive relay, the gun 1 main negative relay, or the gun 2 main negative relay, so that the first charging power supply and the second charging power supply can apply electric energy to the first charging gun and the second charging gun simultaneously or respectively, thereby implementing redistribution of charging electric energy according to the load size of the external device;
preferably, the intelligent combined relay further comprises a module body, a plurality of connecting copper bars, a plurality of fastening screws and an insulating baffle;
preferably, the negative bridge relay, the positive bridge relay, the gun 1 main positive relay, the gun 2 main positive relay, the gun 1 main negative relay and the gun 2 main negative relay are arranged in the module body;
preferably, each of the plurality of connecting copper bars is arranged on the module body through the fastening screw;
preferably, the connecting copper bar is respectively connected between the negative bridge relay and the gun 1 main negative relay, between the negative bridge relay and the gun 2 main negative relay, between the positive bridge relay and the gun 1 main positive relay, and between the positive bridge relay and the gun 2 main positive relay;
preferably, the connecting copper bar is further provided with a first charging power supply positive electrode access port, a second charging power supply positive electrode access port, a first charging power supply negative electrode access port and a second charging power supply negative electrode access port respectively;
preferably, the insulation baffle is arranged between the corresponding positive lead-out terminal and the negative lead-out terminal of the intelligent high-voltage direct-current relay module.
Referring to fig. 3, an electrical schematic diagram of an intelligent high-voltage direct-current relay module according to an embodiment of the present invention is shown. The connection and function of the different electrical components in the electrical schematic diagram are the same as those described above with reference to fig. 1 and 2, which can be referred to the description above with reference to fig. 1 and 2, and will not be further described here.
According to the embodiment, the intelligent high-voltage direct-current relay module is used for modularizing and integrating six original relays in the charging pile, receiving different control signals through the same control communication interface and controlling the working states of the six relays in a linkage mode according to the control signals. This intelligent combined relay assembles these six relays through the integrated package mode of foretell, and it has following advantage:
firstly, the intelligent high-voltage direct-current relay module fuses and integrally installs six relays in the same module, so that the occupied space volume of the relays is effectively reduced, and the module is provided with special installation pins to realize the direct plug-in installation of the six relays, so that the assembly efficiency of the six relays is greatly improved;
secondly, compared with the traditional charging pile in which different relays are required to be respectively arranged to be independently controlled, the intelligent high-voltage direct-current relay module receives different control signals by arranging a unified control communication interface, and is also provided with a main chip circuit board which CAN control the working states of different relays in different communication modes such as SR-485 or CAN and the like, so that the input power supply and the signal wire harness arrangement of the intelligent high-voltage direct-current relay module are effectively saved, the hardware cost of the intelligent high-voltage direct-current relay module is further reduced, in addition, a special plug-pull interface is adopted between the main chip circuit board and the control wire harness, and the situation of wiring errors in installation CAN be effectively prevented;
thirdly, the main chip circuit board of the intelligent high-voltage direct-current relay module can adopt more direct and effective control operation for signal acquisition of the relay and different sensors in the relay, wherein the main chip circuit board can carry out on-off control on the circuit of the relay in a positive and negative bilateral control mode, so that the charging operation of the intelligent relay is safer, and misoperation and misjudgment caused by the fact that the relay parameters are not known when an external circuit indirectly controls the relay are avoided;
fourthly, the intelligent high-voltage direct-current relay module is provided with an insulation detection function, real-time insulation detection can be safely and effectively carried out, so that the condition of electric leakage in the charging process is avoided, an energy-saving board circuit is further integrated in the intelligent high-voltage direct-current relay module, the condition of hardware resource waste when a plurality of relays are used can be avoided, the working state and the fault state of the relays can be monitored in real time through the auxiliary contact function of the intelligent high-voltage direct-current relay module, meanwhile, the working life state of the relays can be recorded, so that the maintenance and the maintenance of the relays can be effectively mastered, and the damage caused by the fact that the relays exceed the rated working life and are not replaced in time is avoided;
fifthly, when the intelligent high-voltage direct-current relay module is externally connected with an external equipment load, the energy distribution unit integrated in the intelligent high-voltage direct-current relay module can timely redistribute charging electric energy according to the size of the external equipment load so as to improve the charging efficiency; in addition, the intelligent high-voltage direct-current relay module is additionally provided with the functions of high-voltage detection and temperature detection on the contacts of the relay, so that the situation that the contact terminals of the contacts of the relay are overheated due to overlarge contact resistance can be effectively prevented, the working temperature of the intelligent high-voltage direct-current relay module can be checked in real time, and the intelligent high-voltage direct-current relay module can be kept in a good working state; the intelligent high-voltage direct-current relay module is also provided with an insulating baffle between the positive leading-out terminal and the negative leading-out terminal, so that the phenomenon of arc discharge between the positive leading-out terminal and the negative leading-out terminal is effectively avoided.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117885583A (en) * | 2023-12-29 | 2024-04-16 | 北京玖行智研交通科技有限公司 | An integrated control device for peripheral equipment of charging pile for new energy vehicles |
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| CN110061549B (en) | 2024-03-26 |
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