CN206775223U - A kind of modularization intelligent power distribution equipment - Google Patents

Abstract

The utility model discloses a modular intelligent power distribution device, which comprises a first power distribution module A, a second power distribution module B, a first parallel contactor, a second parallel contactor and a control board. The utility model realizes the modularization and intelligence of the power distribution of the charging pile, supports hot plugging, can be unplugged and replaced directly when a fault occurs, does not need to be powered off, is easy to maintain, does not affect the use of the whole machine, and improves the overall charging pile. Life cycle efficiency. The utility model not only can be charged by a single gun, but also can be charged by parallel connection of two guns, thereby greatly improving the charging efficiency.

Description

A modular intelligent power distribution device

technical field

The utility model relates to the field of intelligent charging, in particular to a modular intelligent power distribution device.

Background technique

As a means of transportation, the automobile has a history of more than 100 years from the utility model to the present. With the improvement of people's living standards, the use of automobiles in my country has been increasing at an annual rate of 15% in recent years. However, the pollution of the environment by automobiles is becoming more and more serious, and it is imminent to replace fossil fuels with clean energy, so electric vehicles have emerged as the times require. Under the vigorous promotion of the government, the sales volume of electric vehicles has ranked first in the world for two consecutive years. The supporting charging equipment has also been vigorously developed. The "Energy Saving and New Energy Automobile Industry Development Plan (2012-2020)" clearly stated that by 2020, the production capacity of pure electric vehicles and plug-in hybrid electric vehicles will reach 2 million, and the cumulative production and sales will exceed 5 million. This means that 4.8 million distributed charging piles and 12,000 centralized charging and swapping stations need to be built. According to this estimate, at least 960,000 charging piles will need to be built every year in the future. Such a huge number puts forward higher requirements for the reliability and maintainability of charging piles. However, the traditional charging pile installs the billing unit, power distribution module, power distribution part and monitoring part into a charging pile box, all of which are single-board card structures. The wiring is complicated and messy, which is not conducive to production, not to mention maintenance, and complicated debugging. ; If any device is damaged, it needs to be shut down for maintenance, which is difficult to maintain.

Utility model content

The purpose of this utility model is to solve the problems mentioned in the background technology section above through a modular intelligent power distribution device.

For this purpose, the utility model adopts the following technical solutions:

A modular intelligent power distribution device, which includes a first power distribution module A, a second power distribution module B, a first parallel contactor, a second parallel contactor, and a control board; the first power distribution module A includes a first One gun A fuse, the first gun A contactor, the gun A shunt, the second gun A fuse and the second gun A contactor; the second power distribution module B includes the first gun B fuse, the first gun B B-gun contactor, B-gun shunt, second B-gun fuse, and second B-gun contactor; wherein, the first A-gun fuse and the first A-gun contactor correspond to the first power distribution module A The positive pole of the battery is connected in series, and the output end of the first A gun contactor is connected to the charging gun corresponding to the first power distribution module A, that is, the charging A gun; the A gun shunt, the second A gun fuse, the second A gun The gun contactor is connected in series with the negative electrode of the battery corresponding to the first power distribution module A, and the output end of the second A gun contactor is connected to the charging gun corresponding to the first power distribution module A, that is, the charging A gun; One B gun fuse, the first B gun contactor and the positive electrode of the battery corresponding to the second power distribution module B are connected in series, and the output end of the first B gun contactor is charged with the charging gun corresponding to the second power distribution module B B gun connection; the B gun shunt, the second B gun fuse, and the second B gun contactor are connected in series with the negative pole of the battery corresponding to the second power distribution module B, and the output of the second B gun contactor One end of the first parallel contactor is connected to the first A gun fuse and the first A gun contactor, and the other end is connected to the first B gun fuse Wire, the first B gun contactor; one end of the second parallel contactor is connected to the second A gun fuse and the second A gun contactor, and the other end is connected to the second B gun fuse and the second B gun contactor; The negative pole of the battery corresponding to the control board and the first power distribution module A, the A gun shunt, the second A gun fuse, the negative pole of the battery corresponding to the second power distribution module B, the B gun shunt, Second B gun fuse connection.

In particular, the modular intelligent power distribution device further includes a temperature detection module, and the temperature detection module is connected to the control board.

In particular, the control board is communicatively connected with the monitoring system.

The modular intelligent power distribution device proposed by the utility model realizes the modularization and intelligence of the power distribution of the charging pile, supports hot plugging, can be unplugged and replaced directly when a fault occurs, does not need to be powered off, is easy to maintain, and does not affect the whole machine It improves the efficiency of the charging pile throughout its life cycle. The utility model not only can be charged by a single gun, but also can be charged by two guns connected in parallel, thereby greatly improving the charging efficiency. The utility model can upload faults at any time, which is convenient for fault location. At the same time, through the communication with the monitoring system, the contactor can be closed before starting, so that the contactor can be closed without load, prolonging the service life of the contactor.

Description of drawings

Fig. 1 is a schematic diagram of the application structure of the modular intelligent power distribution device provided by the embodiment of the present invention.

detailed description

In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. Preferred embodiments of the utility model are provided in the accompanying drawings. However, the invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive. It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be intervening elements at the same time. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of this invention. The terminology used in the description of the utility model herein is only for the purpose of describing specific embodiments, and is not intended to limit the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to FIG. 1 , which is a schematic diagram of the application structure of the modular intelligent power distribution device provided by the embodiment of the present invention.

In this embodiment, the modular intelligent power distribution device specifically includes a first power distribution module A, a second power distribution module B, a first parallel contactor 101, a second parallel contactor 102, and a control board 103; the first power distribution Module A includes the first A gun fuse 104, the first A gun contactor 105, the A gun shunt 106, the second A gun fuse 107 and the second A gun contactor 108; the second power distribution module B includes The first B-gun fuse 109 , the first B-gun contactor 110 , the B-gun shunt 111 , the second B-gun fuse 112 and the second B-gun contactor 113 .

Specifically, the first A gun fuse 104, the first A gun contactor 105 are connected in series with the positive pole of the battery 114 corresponding to the first power distribution module A, and the output end of the first A gun contactor 105 is connected to the first A gun contactor 105. The charging gun 115 corresponding to the power distribution module A is connected to the charging gun A; the A gun shunt 106, the second A gun fuse 107, and the second A gun contactor 108 are connected to the battery corresponding to the first power distribution module 114 is connected in series, and the output end of the second A gun contactor 108 is connected to the charging gun 115 corresponding to the first power distribution module A, that is, the charging A gun; the first B gun fuse 109, the first B gun contact Connector 110 is connected in series with the positive pole of battery 116 corresponding to the second power distribution module B, and the output end of the first B gun contactor 110 is connected to the charging gun 117 corresponding to the second power distribution module B, that is, the charging B gun; The gun shunt 111, the second B gun fuse 112, the second B gun contactor 113 are connected in series with the negative pole of the battery 116 corresponding to the second power distribution module B, and the output end of the second B gun contactor 113 is connected to The charging gun 117 corresponding to the second power distribution module B is connected to the charging B gun. One end of the first parallel contactor 101 is connected to the first A gun fuse 104 and the first A gun contactor 105, and the other end is connected to the first B gun fuse 109 and the first B gun contactor 110; the second One end of the parallel contactor 102 connects the second A gun fuse 107, the second A gun contactor 108, and the other end connects the second B gun fuse 112, the second B gun contactor 113; The negative pole of the battery 114 corresponding to the first power distribution module A, the A-gun shunt 106, the second A-gun fuse 107, the negative pole of the battery 116 corresponding to the second power distribution module B, the B-gun shunt 111, the second The B gun fuse 112 is connected.

In this embodiment, the modular intelligent power distribution device supports hot swapping, and the specific principle is as follows: when a failure occurs, the control board 103 disconnects the contactor, that is, if the first power distribution module A fails, the control board 103 103 controls the disconnection of the first B gun contactor 110 and the second B gun contactor 113 in the second power distribution module B, and if the second power distribution module B fails, then control, 103 controls the first power distribution module A The first A gun contactor 105 and the second A gun contactor 108 are disconnected, at this time the power distribution device and the charging pile battery (that is, the battery 114 corresponding to the first power distribution module A and the battery corresponding to the second power distribution module B 116) There is no current path between them, and the entire power distribution device can be unplugged directly without powering off the entire charging pile. Therefore, the power distribution device provided by the utility model supports hot unplugging. Similarly, when a new modular intelligent power distribution device When plugged in, the control board 103 will not control the contactors (the first A-gun contactor 105 and the second A-gun contactor 108 in the first power distribution module A, the second The first B gun contactor 110 and the second B gun contactor 113) in the power distribution module B are closed to ensure that there is no current path when the power distribution device is inserted, so the power distribution device provided by the utility model supports hot plugging.

In this embodiment, the modular intelligent power distribution device further includes a temperature detection module, and the temperature detection module is connected to the control board 103 . The temperature detection module can be selected from but not limited to a temperature sensor to detect the temperature of the intelligent power distribution device. The monitoring system 118 communicates with the control board 103 through the RS485 interface. When the modular intelligent power distribution device fails, the fault can be uploaded at any time, which is convenient for fault location. At the same time, through the communication with the monitoring system 118, the contactor (the first and second A gun contactors, the first , Two B gun contactors or the first and second parallel contactors) make the contactor close without load, prolonging the service life of the contactor.

In addition to the advantages of modularization, the utility model also has the characteristics of intelligence, a brief description is as follows: 1. Through the pull-in control of the first parallel contactor 101 and the second parallel contactor 102 by the control board 103, charging A The gun and charging B gun are charged in parallel, and the charging efficiency is doubled. 2. Through the battery output voltage detection circuit and the gun tip voltage detection circuit, the output voltage of the first power distribution module A and the second power distribution module B and the voltage of the gun tip of the charging A gun and the charging B gun can be detected and controlled. The board 103 judges the first A-gun contactor 105, the second A-gun contactor 108, the first B-gun contactor 110, the second B-gun contactor 113, the first parallel contactor 101, and the second parallel contactor according to the detection results. 102 Whether there is a short circuit or open circuit fault. 3. The charging current of the first power distribution module A and the second power distribution module B is detected in real time by the charging current detection circuit, and the control board 103 judges whether the batteries of gun A and gun B are short-circuited according to the charging current, and in the event of a short circuit Disconnect the input to the entire unit. 4. By detecting the voltage between the positive pole of the battery of gun A and the ground, the negative pole of the battery of gun A and the ground, the positive pole of the battery of gun B and the ground, and the voltage between the negative pole of the battery of gun B and the ground, the control board 103 judges the insulation performance of the device. 5. After charging, the utility model discharges the residual energy of the battery through the discharge circuit, and the specific realization is as follows: the positive and negative electrodes connected to the first power distribution module A and the second power distribution module B are connected in series The connected discharge resistor and switch control the action of the switch through the control board 103 . When the charging is over, the monitoring system 118 tells the control board 103 through RS485, and the control board 103 turns on the control switch. At this time, the discharge resistor is connected to the positive and negative poles of the battery, so that the residual energy of the battery can be released. 6. Both the first power distribution module A and the second power distribution module B are equipped with electric meters connected to the control board 103 , and the electricity is automatically uploaded to the billing unit of the control board 103 in real time.

The control of the modular intelligent power distribution device provided by the embodiment of the utility model is as follows: 1. Determine whether there is a fault, if so, shut down, if not, start up; 2. judge whether there is an insulation fault, if so, shut down, if not , the control board starts the discharge circuit and shuts down the machine; 3. Determine whether parallel charging is required, if so, the control board controls the first parallel contactor and the second parallel contactor to pull in, the first A gun contactor, the second A gun contactor The contactor, the contactor of the first gun B and the contactor of the second gun are closed, the charging gun A and the charging gun B are charged at the same time, if not, the contactor of the first gun A, the contactor of the second gun A or the contactor of the second gun The first B gun contactor and the second B gun contactor are closed, and the charging A gun or the charging B gun is charged.

The technical scheme of the utility model realizes the modularization and intelligence of the power distribution of the charging pile, supports hot plugging, can be unplugged and replaced directly when a fault occurs, does not need to be powered off, is easy to maintain, does not affect the use of the whole machine, and improves the charging efficiency. The utilization efficiency of piles in the whole life cycle. The utility model not only can be charged by a single gun, but also can be charged by two guns connected in parallel, thereby greatly improving the charging efficiency. The utility model not only can be charged by a single gun, but also can be charged by two guns connected in parallel, thereby greatly improving the charging efficiency. The utility model can upload faults at any time, which is convenient for fault location. At the same time, through the communication with the monitoring system, the contactor can be closed before starting, so that the contactor can be closed without load, prolonging the service life of the contactor.

Note that the above are only preferred embodiments of the present invention and the applied technical principles. Those skilled in the art will understand that the utility model is not limited to the specific embodiments described here, and various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the utility model. Therefore, although the utility model has been described in detail through the above embodiments, the utility model is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the utility model. The scope of the present invention is determined by the appended claims.

Claims (3)

1. a kind of modularization intelligent power distribution equipment, it is characterised in that including the first Power entry module A, the second Power entry module B, first Parallel contactor, the second parallel contactor and control panel；The first Power entry module A includes the first A rifles fuse, the first A rifles Contactor, A rifles current divider, the 2nd A rifles fuse and the 2nd A rifle contactors；The second Power entry module B include the first B rifles fuse, First B rifles contactor, B rifles current divider, the 2nd B rifles fuse and the 2nd B rifle contactors；Wherein, the first A rifles fuse, the first A The positive pole serial connection of rifle contactor battery corresponding with the first Power entry module A, the output end of the first A rifle contactors are matched somebody with somebody with first Charging gun corresponding to electric modules A connects；The A rifles current divider, the 2nd A rifles fuse, the 2nd A rifles contactor and first distribution The negative pole serial connection of battery corresponding to modules A, the output end charging corresponding with the first Power entry module A of the 2nd A rifle contactors Rifle connects；The positive pole serial connection of the first B rifles fuse, the first B rifles contactor battery corresponding with the second Power entry module B, The output end charging gun connection corresponding with the second Power entry module B of first B rifle contactors；The B rifles current divider, the 2nd B rifles melt Silk, the 2nd B rifles contactor battery corresponding with the second Power entry module B negative pole be connected in series, the 2nd B rifle contactors it is defeated Go out end charging gun connection corresponding with the second Power entry module B；The first A rifles fuse of one end connection of first parallel contactor, First A rifle contactors, the other end connect the first B rifles fuse, the first B rifle contactors；One end of second parallel contactor connects The 2nd A rifles fuse, the 2nd A rifle contactors are connect, the other end connects the 2nd B rifles fuse, the 2nd B rifle contactors；The control panel with The negative pole of battery corresponding to the first Power entry module A, A rifles current divider, the 2nd A rifles fuse, electricity corresponding to the second Power entry module B The negative pole in pond, B rifles current divider, the connection of the 2nd B rifles fuse.

2. modularization intelligent power distribution equipment according to claim 1, it is characterised in that also including temperature detecting module, institute State temperature detecting module connection control panel.

3. according to the modularization intelligent power distribution equipment described in any one of claim 1 or 2, it is characterised in that the control panel with Monitoring system communication connection.