CN108427052B

CN108427052B - Connection detection device, charging test system and charging and discharging test system

Info

Publication number: CN108427052B
Application number: CN201810454893.5A
Authority: CN
Inventors: 何学通; 于勤录; 邓文聪; 梁土生; 朱国龙
Original assignee: Zhuhai Gree Titanium Electric Appliance Co ltd; Gree Altairnano New Energy Inc
Current assignee: Zhuhai Gree Titanium Electric Appliance Co ltd; Gree Altairnano New Energy Inc
Priority date: 2018-05-11
Filing date: 2018-05-11
Publication date: 2024-04-05
Anticipated expiration: 2038-05-11
Also published as: CN108427052A

Abstract

The invention discloses a connection detection device, which comprises a charging bow, a pantograph and a connection detection unit; the charging bow comprises a charging bow positive electrode, a charging bow negative electrode, a charging bow connecting electrode and a charging bow grounding electrode which are mutually insulated; the pantograph comprises a pantograph positive electrode, a pantograph negative electrode, a pantograph connecting electrode and a pantograph grounding electrode which are mutually insulated; the charging bow positive electrode, the charging bow negative electrode, the charging bow connecting electrode and the charging bow grounding electrode are respectively and correspondingly arranged with the pantograph positive electrode, the pantograph negative electrode, the pantograph connecting electrode and the pantograph grounding electrode; the connection detection unit comprises a voltage detection module, a resistor R1, a switch and a switch control unit; the invention can conveniently detect whether the charging bow is electrically connected with the discharging bow or not through the connection detection device; the invention also provides a charging test system and a charging and discharging test system.

Description

Connection detection device, charging test system and charging and discharging test system

[ technical field ]

The invention relates to the technical field of electric automobile charging, in particular to a connection detection device, a charging test system and a charging and discharging test system.

Background art

With the concept of environmental protection becoming deeper and deeper, electric automobiles powered by electric energy are increasingly used. At present, an electric automobile is slowly developed into a mechanical full-automatic charging mode, and a pantograph is one of schemes of mechanical automatic charging. When the electric automobile needs to be charged, the charging bow on the charging pile can be lowered until the charging bow is electrically connected with the pantograph to reach the specified condition, and the charging pile charges the electric automobile through the charging bow and the pantograph. Detecting whether the charging bow is electrically connected to the pantograph is a problem that needs to be solved by those skilled in the art.

Summary of the invention

A first object of the present invention is to provide a connection detecting apparatus.

A connection detection device comprises a charging bow, a pantograph and a connection detection unit; the charging bow comprises a charging bow positive electrode, a charging bow negative electrode, a charging bow connecting electrode and a charging bow grounding electrode which are mutually insulated; the pantograph comprises a pantograph positive electrode, a pantograph negative electrode, a pantograph connecting electrode and a pantograph grounding electrode which are mutually insulated; the charging bow positive electrode, the charging bow negative electrode, the charging bow connecting electrode and the charging bow grounding electrode are respectively and correspondingly arranged with the pantograph positive electrode, the pantograph negative electrode, the pantograph connecting electrode and the pantograph grounding electrode; the connection detection unit comprises a voltage detection module, a resistor R1, a switch and a switch control unit;

One end of the resistor R1 is connected with the power VCC, the other end of the resistor R1 is connected with the pantograph connecting pole and the voltage acquisition end of the voltage detection module, the pantograph grounding electrode is grounded, one end of the switch is connected with the charging pantograph connecting pole, the other end of the switch is connected with the charging pantograph grounding electrode, the charging pantograph grounding electrode is grounded, the switch control unit is connected with the control end of the switch, or one end of the resistor R1 is connected with the power VCC, the other end of the resistor R1 is connected with the charging pantograph connecting pole and the voltage acquisition end of the voltage detection module, the charging pantograph grounding electrode is grounded, one end of the switch is connected with the pantograph connecting pole, the other end of the switch is connected with the pantograph grounding electrode, and the switch control unit is connected with the control end of the switch.

Further, the charging bow comprises two copper bars; the pantograph comprises two copper bars; one copper bar of the charging bow comprises a charging bow first conductive end and a charging bow second conductive end which are mutually insulated, and the other copper bar comprises a charging bow third conductive end and a charging bow fourth conductive end which are mutually insulated; one copper bar of the pantograph comprises a first pantograph conducting end and a third pantograph conducting end which are mutually insulated, and the other copper bar comprises a second pantograph conducting end and a fourth pantograph conducting end which are mutually insulated; the charging bow first conductive end and the pantograph first conductive end are arranged on the left upper side, the charging bow second conductive end and the pantograph second conductive end are arranged on the left lower side, the charging bow third conductive end and the pantograph third conductive end are arranged on the right upper side, and the charging bow fourth conductive end and the pantograph fourth conductive end are arranged on the right lower side;

One of the first conductive end, the second conductive end, the third conductive end and the fourth conductive end of the charging bow is a positive charging bow electrode, the other is a negative charging bow electrode, the other is a connecting pole of the charging bow, and the other is a grounding pole of the charging bow; the polarities of the first conductive end of the pantograph, the second conductive end of the pantograph, the third conductive end of the pantograph and the fourth conductive end of the pantograph are respectively corresponding to the polarities of the first conductive end of the charging pantograph, the second conductive end of the charging pantograph, the third conductive end of the charging pantograph and the fourth conductive end of the charging pantograph.

Further, one of the first conductive end of the charging bow and the fourth conductive end of the charging bow is a charging bow positive electrode, the other is a charging bow negative electrode, one of the second conductive end of the charging bow and the third conductive end of the charging bow is a charging bow connecting electrode, the other is a charging bow grounding electrode, or one of the first conductive end of the charging bow and the fourth conductive end of the charging bow is a charging bow connecting electrode, the other is a charging bow grounding electrode, and one of the second conductive end of the charging bow and the third conductive end of the charging bow is a charging bow positive electrode, and the other is a charging bow negative electrode.

Further, the two copper bars of the charging bow are parallel to each other; the two copper bars of the pantograph are parallel to each other; the two copper bars of the charging bow are perpendicular to the two copper bars of the pantograph.

Further, the charging bow comprises two copper bars; the pantograph comprises two copper bars; one copper bar of the charging bow comprises a charging bow first conductive end and a charging bow second conductive end which are mutually insulated, and the other copper bar comprises a charging bow third conductive end and a charging bow fourth conductive end which are mutually insulated; one copper bar of the pantograph comprises a first pantograph conducting end and a second pantograph conducting end which are mutually insulated, and the other copper bar comprises a third pantograph conducting end and a fourth pantograph conducting end which are mutually insulated; one copper bar of the charging bow is parallel to one copper bar of the pantograph; the other copper bar of the charging bow is parallel to the other copper bar of the pantograph;

Further, the charging bow positive electrode and the charging bow negative electrode are arranged on different copper bars, and the charging bow connecting electrode and the charging bow grounding electrode are arranged on different copper bars.

Further, the charging bow is a copper bar; the pantograph is a copper bar; the copper bar of the charging bow comprises a charging bow first conductive end, a charging bow second conductive end, a charging bow third conductive end and a charging bow fourth conductive end which are arranged in an insulating manner; the copper bar of the pantograph comprises a first conductive end of the pantograph, a second conductive end of the pantograph, a third conductive end of the pantograph and a fourth conductive end of the pantograph which are mutually insulated; one copper bar of the charging bow is parallel to one copper bar of the pantograph;

one of the first conductive end, the second conductive end, the third conductive end and the fourth conductive end of the charging bow is a positive electrode of the charging bow, the other is a negative electrode of the charging bow, the other is a connecting electrode of the charging bow, and the other is a grounding electrode of the charging bow; the polarities of the first conductive end of the pantograph, the second conductive end of the pantograph, the third conductive end of the pantograph and the fourth conductive end of the pantograph are respectively corresponding to the polarities of the first conductive end of the charging pantograph, the second conductive end of the charging pantograph, the third conductive end of the charging pantograph and the fourth conductive end of the charging pantograph.

Further, the copper bars of the charging bow are cylinders; the surface of the copper bar of the pantograph, which is contacted with the copper bar of the charging pantograph, is provided with a semi-cylindrical groove corresponding to the copper bar of the charging pantograph.

A second object of the present invention is to provide a charge test system.

A charging test system comprises a simulated vehicle, a simulated charging pile and the connection detection device; the simulated vehicle comprises a BMS main control unit, a vehicle-mounted battery, a vehicle-mounted communication unit and a vehicle-mounted wireless communication unit; the analog charging pile comprises a charging bow control unit, a charging pile main control unit, a charging control unit, a mains supply interface unit, a charging pile communication unit and a charging pile wireless communication unit; the charging control unit comprises an AC-DC module; the simulation vehicle further comprises a man-machine interaction module, the man-machine interaction module is connected with the vehicle-mounted communication unit, and/or the simulation charging pile further comprises a man-machine interaction module, and the man-machine interaction module is connected with the charging pile communication unit;

the vehicle-mounted wireless communication unit is connected with the charging pile wireless communication unit in a wireless communication mode; the vehicle-mounted wireless communication unit is connected with the vehicle-mounted communication unit; the vehicle-mounted communication unit is connected with the BMS main control unit and the voltage detection module; the BMS main control unit is connected with the vehicle-mounted battery; the vehicle-mounted battery is connected with the positive electrode and the negative electrode of the pantograph; the charging pile wireless communication unit is connected with the charging pile communication unit; the charging pile communication unit is connected with the charging pile main control unit and the charging arch control unit; the charging pile main control unit is connected with the AC-DC module; the AC-DC module is connected with the charging bow positive electrode, the charging bow negative electrode and the mains interface unit; the commercial power interface unit is connected with a commercial power grid; the charging bow control unit is connected with the charging bow;

The voltage acquisition end of the voltage detection module is connected with the pantograph connecting pole, one end of the switch is connected with the charging pantograph connecting pole, the other end of the switch is connected with the charging pantograph grounding pole, the switch control unit is connected with the charging pile communication unit, or, the voltage acquisition end of the voltage detection module is connected with the charging bow connecting electrode, one end of the switch is connected with the pantograph connecting electrode, the other end of the switch is connected with the pantograph grounding electrode, and the switch control unit is connected with the vehicle-mounted communication unit.

Further, the analog charging pile further comprises a mains supply feed network unit; the mains supply feed network unit is connected with the mains supply interface unit. A third object of the present invention is to provide a charge and discharge test system.

A charge and discharge test system comprises a simulated vehicle, a simulated charge pile and the connection detection device; the simulated vehicle comprises a BMS main control unit, a vehicle-mounted battery, a vehicle-mounted communication unit and a vehicle-mounted wireless communication unit; the analog charging pile comprises a charging bow control unit, a charging pile main control unit, a charging and discharging control unit, a mains supply interface unit, a charging pile communication unit and a charging pile wireless communication unit; the charge-discharge control unit comprises an AC-DC module and a DC-AC module; the simulation vehicle further comprises a man-machine interaction module, the man-machine interaction module is connected with the vehicle-mounted communication unit, and/or the simulation charging pile further comprises a man-machine interaction module, and the man-machine interaction module is connected with the charging pile communication unit;

The vehicle-mounted wireless communication unit is connected with the charging pile wireless communication unit in a wireless communication mode; the vehicle-mounted wireless communication unit is connected with the vehicle-mounted communication unit; the vehicle-mounted communication unit is connected with the BMS main control unit and the voltage detection module; the BMS main control unit is connected with the vehicle-mounted battery; the vehicle-mounted battery is connected with the positive electrode and the negative electrode of the pantograph; the charging pile wireless communication unit is connected with the charging pile communication unit; the charging pile communication unit is connected with the charging pile main control unit and the charging arch control unit; the charging pile main control unit is connected with the AC-DC module and the DC-AC module; the AC-DC module is connected with the charging bow positive electrode, the charging bow negative electrode and the mains interface unit; the DC-AC module is connected with the charging bow positive electrode, the charging bow negative electrode and the mains interface unit; the commercial power interface unit is connected with a commercial power grid; the charging bow control unit is connected with the charging bow;

Further, the analog charging pile further comprises a mains supply feed network unit; the mains supply feed network unit is connected with the mains supply interface unit.

The invention has the beneficial effects that:

the invention can conveniently detect whether the charging bow is electrically connected with the discharging bow or not through the connection detection device. Furthermore, the charging test system simulates the charging process of the charging bow and the pantograph, the charging bow is not required to be assembled on an actual charging pile, and the pantograph is assembled on an actual electric automobile, so that the test is convenient. Furthermore, the charging and discharging processes of the charging bow and the pantograph are simulated through the charging and discharging test system, the charging bow is not required to be assembled on an actual charging pile, and the pantograph is assembled on an actual electric automobile, so that the test is convenient. Furthermore, the alternating current commercial power is detected through the commercial power feed network unit, so that electric energy transmission with the vehicle-mounted battery when the alternating current commercial power is abnormal is avoided.

Description of the drawings

In order to more clearly illustrate the embodiments of the present invention, the drawings that are used in the embodiments will be briefly described below. The drawings in the following description are only examples of the present invention and other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic diagram of a connection detection apparatus of the present invention;

FIG. 2 is a schematic view of a copper bar according to a first embodiment of the present invention;

FIG. 3 is a schematic view of a copper bar according to a second embodiment of the present invention;

FIG. 4 is a schematic view of a copper bar according to a third embodiment of the present invention;

FIG. 5 is a schematic view of a copper bar according to a fourth embodiment of the present invention;

FIG. 6 is a schematic block diagram of a charge-discharge test system (bi-directional) according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a charge/discharge test system (a man-machine interaction module simulating one side of a vehicle for unidirectional charge/discharge control) according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a charge/discharge test system (a man-machine interaction module simulating one side of a charging pile for unidirectional charge/discharge control) according to an embodiment of the present invention;

FIG. 9 is a block diagram of a charge test system (bi-directional) according to an embodiment of the invention;

FIG. 10 is a schematic diagram of a charging test system (a man-machine interaction module simulating one-way control charging on one side of a vehicle) according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of a charging test system (a man-machine interaction module simulating one side of a charging pile for unidirectional control charging) according to an embodiment of the present invention;

description of the drawings: 11, a first conductive end of the pantograph; 12, a second conductive end of the pantograph; 13, a third conductive end of the pantograph; 14, a fourth conductive end of the pantograph; 21, charging the first conductive end of the bow; 22, charging the second conductive end of the bow; 23, charging the third conductive end of the bow; 24, charging the fourth conductive end of the bow; 3, insulating connecting pieces; 41, a voltage acquisition end of the voltage detection module.

Best mode for carrying out the invention

The present invention will be described in detail with reference to the accompanying drawings.

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions, and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Example 1

As shown in fig. 1, a connection detection device includes a charging bow, a pantograph, and a connection detection unit. The charging bow comprises a charging bow positive electrode, a charging bow negative electrode, a charging bow connecting electrode and a charging bow grounding electrode. The pantograph comprises a pantograph positive electrode, a pantograph negative electrode, a pantograph connecting electrode and a pantograph grounding electrode. The connection detection unit comprises a voltage detection module, a resistor R1, a switch and a switch control unit. The voltage detection module includes a voltage acquisition terminal 41.

As shown in fig. 1, in the present embodiment, a pantograph connection pole is connected to one end of a resistor R1 and a voltage acquisition terminal 41 of a voltage detection module, and the other end of the resistor R1 is connected to a power supply VCC. The pantograph grounding electrode is grounded. The charging bow is grounded. One end of the switch is connected with the charging bow connecting electrode, and the other end is connected with the charging bow grounding electrode. The switch control unit is connected with the switch.

As shown in fig. 1, in the present embodiment, the charging-bow grounding electrode is grounded to the protection ground PE, the pantograph grounding electrode is grounded to the protection ground PE, and the pantograph grounding electrode and the voltage detection module are grounded to GND, and the voltage collection terminal 41 of the voltage detection module is used for collecting the voltage of the common terminal of the pantograph connecting electrode and the resistor R1. The switch is used for controlling the on-off of the charging bow connecting pole and the charging bow grounding pole. The switch control unit is used for controlling the switch to be closed or opened. The switch control unit controls the switch to be closed when receiving the bow-lowering instruction, and controls the switch to be opened when receiving the connection success instruction output by the voltage detection module.

In the present embodiment, the principle of the connection detection unit detecting whether the charging bow is connected to the pantograph is as follows: the switch control unit controls the switch to be closed when receiving the bow lowering instruction, and the charging bow connecting electrode is electrically connected with the charging bow grounding electrode; when the charging bow is not in contact with the pantograph, namely in electric connection, the charging bow connecting electrode is not electrically connected with the pantograph connecting electrode, the charging bow grounding electrode is not electrically connected with the pantograph grounding electrode, and the voltage collected by the voltage collecting end 41 of the voltage detection module is at a high level (the resistor R1 pulls up the level of the voltage collecting end 41 of the voltage detection module to VCC); when the charging bow is in contact with the pantograph, namely in electric connection, the charging bow connecting electrode is in contact with the pantograph connecting electrode so as to be electrically connected, the charging bow grounding electrode is in contact with the pantograph grounding electrode so as to be electrically connected, and the voltage collected by the voltage collecting end 41 of the voltage detection module is at a low level (the charging bow connecting electrode, the charging bow grounding electrode and the pantograph grounding electrode are electrically connected, and the level of the voltage collecting end 41 of the voltage detection module is pulled down to GND); when the voltage collected by the voltage collection end 41 of the voltage detection module is at a high level, the charging bow is not in contact with the pantograph, namely the charging bow is not electrically connected with the pantograph, and when the voltage collected by the voltage collection end 41 of the voltage detection module is at a low level, the charging bow is in contact with the pantograph, namely the charging bow is electrically connected with the pantograph.

As shown in fig. 2, in the present embodiment, the pantograph includes two copper bars, one copper bar includes a first conductive end 11 of the pantograph, a third conductive end 13 of the pantograph, and an insulating connecting member 3, and the other copper bar includes a second conductive end 12 of the pantograph, a fourth conductive end 14 of the pantograph, and the insulating connecting member 3. The charging bow comprises two copper bars, one copper bar comprises a charging bow first conductive end 21, a charging bow second conductive end 22 and an insulating connecting piece 3, and the other copper bar comprises a charging bow third conductive end 23, a charging bow fourth conductive end 24 and an insulating connecting piece 3. The first conductive end 11, the second conductive end 12, the third conductive end 13 and the fourth conductive end 14 of the pantograph are made of conductive materials; the charging bow first conductive end 21, the charging bow second conductive end 22, the charging bow third conductive end 23 and the charging bow fourth conductive end 24 are made of conductive materials; the insulating connectors 3 are all made of insulating materials.

In this embodiment, the charging bow is the same with the pantograph structure, can adopt same copper bar, need not distinguish charging bow and pantograph during production, be convenient for production and be convenient for assemble.

As shown in fig. 2, the charging-bow first conductive end 21 and the pantograph first conductive end 11 are disposed on the upper left side, the charging-bow second conductive end 22 and the pantograph second conductive end 12 are disposed on the lower left side, the charging-bow third conductive end 23 and the pantograph third conductive end 13 are disposed on the upper right side, the charging-bow fourth conductive end 24 and the pantograph fourth conductive end 14 are disposed on the lower right side, and the positions of the respective conductive ends of the charging-bow correspond to the positions of the respective conductive ends of the pantograph. When the charging bow is contacted with the pantograph, the first conductive end 21 of the charging bow is contacted with the first conductive end 11 of the pantograph so as to be electrically connected; the charging bow second conductive end 22 is in contact with the pantograph second conductive end 12 and is further electrically connected; the third conductive end 23 of the charging bow is in contact with the third conductive end 13 of the pantograph so as to be electrically connected; the charging bow fourth conductive end 24 is in contact with the fourth conductive end 14 of the pantograph to thereby be electrically connected.

In the present embodiment, the pantograph first conductive end 11, the pantograph second conductive end 12, the pantograph third conductive end 13, and the pantograph fourth conductive end 14 correspond to the polarities of the charging-pantograph first conductive end 21, the charging-pantograph second conductive end 22, the charging-pantograph third conductive end 23, and the charging-pantograph fourth conductive end.

In this embodiment, the charging bow first conductive end 21 is a charging bow positive electrode, the charging bow fourth conductive end 24 is a charging bow negative electrode, the charging bow second conductive end 22 is a charging bow connecting electrode, and the charging bow third conductive end 23 is a charging bow grounding electrode; the first conductive end 11 of the pantograph is a positive electrode of the pantograph, the fourth conductive end 14 of the pantograph is a negative electrode of the pantograph, the second conductive end 12 of the pantograph is a connecting electrode of the pantograph, and the third conductive end 13 of the pantograph is a grounding electrode of the pantograph.

In other embodiments, the charging arch first conductive end 21 is a charging arch negative electrode and the charging arch fourth conductive end 24 is a charging arch positive electrode; one of the charging bow second conductive end 22 and the charging bow third conductive end 23 is a charging bow connecting pole, and the other is a charging bow grounding pole.

In other embodiments, one of the charging arch first conductive end 21 and the charging arch fourth conductive end 24 is a charging arch connection pole and the other is a charging arch ground pole; one of the charging bow second conductive end 22 and the charging bow third conductive end 23 is a charging bow positive electrode, and the other is a charging bow negative electrode.

In other embodiments, the charging-bow positive electrode, the charging-bow negative electrode, the charging-bow connecting electrode and the charging-bow grounding electrode may be other conductive ends of the charging-bow, as long as the charging-bow positive electrode and the charging-bow negative electrode are disposed on different copper bars, the charging-bow connecting electrode and the charging-bow grounding electrode are disposed on different copper bars, the pantograph positive electrode and the pantograph negative electrode are disposed on different copper bars, and the pantograph positive electrode, the charging-bow negative electrode, the pantograph connecting electrode and the pantograph grounding electrode correspond to the positions of the charging-bow positive electrode, the charging-bow negative electrode, the charging-bow connecting electrode and the charging-bow grounding electrode, respectively.

In this embodiment, the charging-bow positive electrode and the charging-bow negative electrode are disposed on one diagonal, the charging-bow connecting electrode and the charging-bow grounding electrode are disposed on the other diagonal, and correspondingly, the pantograph positive electrode and the pantograph negative electrode are disposed on one diagonal, and the pantograph connecting electrode and the pantograph grounding electrode are disposed on the other diagonal; that is, the charging-bow positive electrode and the charging-bow negative electrode are arranged on different copper bars, the charging-bow connecting electrode and the charging-bow grounding electrode are arranged on different copper bars, the pantograph positive electrode and the pantograph negative electrode are arranged on different copper bars, compared with the charging-bow positive electrode and the charging-bow negative electrode which are arranged on another copper bar, the charging-bow connecting electrode and the charging-bow grounding electrode are arranged on one copper bar, or the pantograph positive electrode and the pantograph negative electrode are arranged on one copper bar, and the copper bars where the charging-bow connecting electrode and the charging-bow grounding electrode are arranged on the other copper bar are in contact with the copper bars where the corresponding pantograph connecting electrode and the corresponding pantograph grounding electrode are arranged, but when the copper bars where the charging-bow positive electrode and the charging-bow negative electrode are not in contact with the copper bars where the corresponding positive electrode and the corresponding negative electrode are arranged, the risk of low level is detected by the voltage detection device.

As shown in fig. 2, in the present embodiment, two copper bars of the charging bow are parallel to each other, two copper bars of the pantograph are parallel to each other, and two copper bars of the charging bow are perpendicular to two copper bars of the pantograph. The arrangement can increase the allowable error distance when the charging bow is contacted with the pantograph, and reduce the risk that the charging bow cannot be electrically connected with the pantograph because of the distance error when the charging bow is contacted with the pantograph.

In other embodiments, the two copper bars of the charging bow are parallel to each other and the two copper bars of the pantograph are parallel to each other, but the two copper bars of the charging bow are not perpendicular to the two copper bars of the pantograph, and each conductive end of the charging bow corresponds to each conductive end of the pantograph in position. When the charging bow is in contact with the pantograph, each conductive end of the charging bow is correspondingly contacted with each conductive end of the pantograph so as to be electrically connected. The charging bow positive electrode and the charging bow negative electrode are arranged on different copper bars, the charging bow connecting electrode and the charging bow grounding electrode are arranged on different copper bars, the pantograph positive electrode and the pantograph negative electrode are arranged on different copper bars, and the pantograph connecting electrode and the pantograph grounding electrode are arranged on different copper bars.

In other embodiments, the two copper bars of the charging bow are not parallel, the two copper bars of the pantograph are parallel, or the two copper bars of the charging bow are not parallel, and each conductive end of the charging bow corresponds to each conductive end position of the pantograph. When the charging bow is in contact with the pantograph, each conductive end of the charging bow is correspondingly contacted with each conductive end of the pantograph so as to be electrically connected. The charging bow positive electrode and the charging bow negative electrode are arranged on different copper bars, the charging bow connecting electrode and the charging bow grounding electrode are arranged on different copper bars, the pantograph positive electrode and the pantograph negative electrode are arranged on different copper bars, and the pantograph connecting electrode and the pantograph grounding electrode are arranged on different copper bars.

In other embodiments, the two copper bars of the charging bow are not parallel, the two copper bars of the pantograph are not parallel, and each conductive end of the charging bow corresponds to each conductive end position of the pantograph. When the charging bow is in contact with the pantograph, each conductive end of the charging bow is correspondingly contacted with each conductive end of the pantograph so as to be electrically connected. The charging bow positive electrode and the charging bow negative electrode are arranged on different copper bars, the charging bow connecting electrode and the charging bow grounding electrode are arranged on different copper bars, the pantograph positive electrode and the pantograph negative electrode are arranged on different copper bars, and the pantograph connecting electrode and the pantograph grounding electrode are arranged on different copper bars.

As shown in fig. 6, a charge-discharge test system includes an analog vehicle, an analog charge pile, and the connection detection device. In this embodiment, the simulated vehicle includes a man-machine interaction module, a BMS main control unit, a vehicle-mounted battery, a vehicle-mounted communication unit, and a vehicle-mounted wireless communication unit; the simulation charging pile comprises a man-machine interaction module, a charging bow control unit, a charging pile main control unit, a charging and discharging control unit, a mains supply interface unit, a charging pile communication unit and a charging pile wireless communication unit.

In this embodiment, the man-machine interaction module on the side of the simulated vehicle and the man-machine interaction module on the side of the simulated charging pile can both control charging and discharging, i.e. the charging and discharging test system can control charging and discharging in both directions. In this embodiment, the human-computer interaction module simulating one side of the vehicle is a vehicle-mounted display screen, and the human-computer interaction module simulating one side of the charging pile is a charging pile display screen.

As shown in fig. 6, the vehicle-mounted wireless communication unit is connected with the charging pile wireless communication unit in a wireless communication manner; the vehicle-mounted wireless communication unit is connected with the vehicle-mounted communication unit; the vehicle-mounted communication unit is connected with the man-machine interaction module, the BMS main control unit and the voltage detection module; the BMS main control unit is connected with the vehicle-mounted battery; the vehicle-mounted battery is connected with the positive electrode of the pantograph and the negative electrode of the pantograph; the charging pile wireless communication unit is connected with the charging pile communication unit; the charging pile communication unit is connected with the man-machine interaction module, the charging pile main control unit, the charging arch control unit and the switch control unit; the charging pile main control unit is connected with the charging and discharging control unit; the charging and discharging control unit is connected with the charging bow positive electrode, the charging bow negative electrode and the mains supply interface unit; the mains supply interface unit is connected with a mains supply network; the charging bow control unit is connected with the charging bow and is used for controlling the action of the charging bow, such as lowering the bow, stopping lowering the bow, lifting the bow and stopping lifting the bow.

The utility power interface unit is used for receiving alternating current utility power from the utility power grid or feeding alternating current back to the utility power grid, the charge-discharge control unit is used for converting alternating current utility power into direct current or converting direct current into alternating current, the vehicle-mounted display screen is used for receiving instructions, sending instructions and displaying test results, the charging pile display screen is used for receiving instructions, sending instructions and displaying test results, and an operator can control charge-discharge, namely bidirectional charge-discharge through the vehicle-mounted display screen or the charging pile display screen.

In this embodiment, the charge-discharge control unit includes an AC-DC module and a DC-AC module; the AC-DC module is connected with the charging pile main control unit, the charging arch positive electrode, the charging arch negative electrode and the mains supply interface unit; the DC-AC module is connected with the charging pile main control unit, the charging arch positive electrode, the charging arch negative electrode and the mains supply interface unit; the AC-DC module is used for converting alternating current commercial power into direct current signals; the DC-AC module is used for converting the direct current signal into an alternating current signal; the charging pile main control unit is used for controlling the on-off of the AC-DC module and the DC-AC module.

The flow of charging control by an operator through the vehicle-mounted display screen is as follows:

step 1, an operator selects to descend an arch on a vehicle-mounted display screen interface, the vehicle-mounted display screen sends an arch descending instruction to a charging arch control unit through a vehicle-mounted communication unit, a vehicle-mounted wireless communication unit, a charging pile wireless communication unit and a charging pile communication unit, the arch descending instruction is sent to a switch control unit through the vehicle-mounted communication unit, the vehicle-mounted wireless communication unit, the charging pile wireless communication unit and the charging pile communication unit, the arch descending instruction is sent to a voltage detection module through the vehicle-mounted communication unit, the charging arch control unit controls the charging arch to start descending after receiving the arch descending instruction, the switch control unit controls a switch to be closed after receiving the arch descending instruction, and the voltage detection module starts to detect the voltage acquired by a voltage acquisition end 41 after receiving the arch descending instruction;

Step 2, the voltage detection module detects whether the voltage collected by the voltage collection terminal 41 is at a low level within a certain detection time,

if the voltage detection module detects that the voltage acquired by the voltage acquisition end 41 is always at a high level within a certain detection time, the voltage detection module sends a connection failure instruction to the vehicle-mounted display screen through the vehicle-mounted communication unit, the vehicle-mounted wireless communication unit, the charging pile wireless communication unit and the charging pile communication unit, sends a charging arch lifting instruction to the charging arch control unit through the vehicle-mounted communication unit, the vehicle-mounted wireless communication unit, the charging pile wireless communication unit and the charging pile communication unit,

the vehicle-mounted display screen and the charging pile display screen display connection failure on the interface after receiving the connection failure instruction, the charging arch control unit controls the charging arch to start to lift after receiving the charging arch lifting instruction, and sends a charging arch completion instruction to the charging pile display screen through the charging pile communication unit when the charging arch returns to the initial position, the charging pile display screen and the charging pile display screen display control unit send the charging arch completion instruction to the vehicle-mounted display screen through the charging pile communication unit, the charging pile wireless communication unit, the vehicle-mounted wireless communication unit and the vehicle-mounted communication unit, the charging pile display screen and the vehicle-mounted display screen display the charging arch completion on the interface after receiving the charging arch completion instruction, the charging arch control unit controls the charging arch to stop lifting, and the step 2 is returned,

If the voltage detection module detects that the voltage acquired by the voltage acquisition end 41 is low in level within a certain detection time, the voltage detection module sends a connection success instruction to the vehicle-mounted display screen through the vehicle-mounted communication unit, sends the connection success instruction to the charging pile display screen through the vehicle-mounted communication unit, the vehicle-mounted wireless communication unit, the charging pile wireless communication unit and the charging pile communication unit, sends the connection success instruction to the switch control unit through the vehicle-mounted communication unit, the vehicle-mounted wireless communication unit, the charging pile wireless communication unit and the charging pile communication unit, sends a stop bow lowering instruction to the charging bow control unit through the vehicle-mounted communication unit, the vehicle-mounted wireless communication unit, the charging pile wireless communication unit and the charging pile communication unit,

the method comprises the steps that after a connection success instruction is received by a vehicle-mounted display screen and a charging pile display screen, connection success is displayed on an interface, after the connection success instruction is received by a switch control unit, a switch is controlled to be disconnected, after the charging pile control unit receives a charging pile descending instruction, the charging pile is controlled to stop descending, when the charging pile stops descending, a descending instruction is sent to the vehicle-mounted display screen through a charging pile communication unit, a charging pile wireless communication unit, a vehicle-mounted wireless communication unit and a vehicle-mounted communication unit, the descending instruction is sent to the charging pile display screen through the charging pile communication unit, and when the descending instruction is received by the vehicle-mounted display screen and the charging pile display screen, the descending completion entering step 3 is displayed on the interface;

Step 3, an operator selects to start charging on a vehicle-mounted display screen, the vehicle-mounted display screen sends a charging instruction to a charging pile main control unit through a vehicle-mounted communication unit, a vehicle-mounted wireless communication unit, a charging pile wireless communication unit and a charging pile communication unit, the charging instruction is sent to a BMS main control unit through the vehicle-mounted communication unit, the BMS main control unit calculates the charging quantity required to be charged by the vehicle-mounted battery according to the current electric quantity of the vehicle-mounted battery after receiving the charging instruction, and the BMS main control unit sends the charging quantity required to be charged by the vehicle-mounted battery to the charging pile main control unit through the vehicle-mounted communication unit, the vehicle-mounted wireless communication unit, the charging pile wireless communication unit and the charging pile communication unit, and the charging pile main control unit controls the conduction of an AC-D C module after receiving the charging instruction and the charging quantity required to be charged by the vehicle-mounted battery;

and 4, the AC-DC module receives AC commercial power through the commercial power interface unit, converts the AC commercial power into DC power, charges the vehicle-mounted battery through the charging bow positive electrode, the charging bow negative electrode, the pantograph positive electrode and the pantograph negative electrode, the BMS main control unit sends the charged time and the charged quantity of the vehicle-mounted battery to the vehicle-mounted display screen through the vehicle-mounted communication unit, the vehicle-mounted wireless communication unit, the charging pile wireless communication unit and the charging pile communication unit, the vehicle-mounted display screen and the charging pile display screen receive the charged time and the charged quantity of the vehicle-mounted battery, the charged time and the charged quantity of the vehicle-mounted battery are displayed on the interface, and the BMS main control unit sends a charging completion instruction to the vehicle-mounted display screen through the vehicle-mounted communication unit when detecting that the charging of the vehicle-mounted battery is completed, and sends the charging completion instruction to the charging pile display screen through the vehicle-mounted communication unit, the vehicle-mounted wireless communication unit, the charging pile wireless communication unit and the charging pile communication unit, and the charging pile display screen after receiving the charging completion instruction.

And 5, selecting an ascending bow on the vehicle-mounted display screen by an operator, sending an ascending bow instruction to the charging bow control unit by the vehicle-mounted display screen through the vehicle-mounted communication unit, the vehicle-mounted wireless communication unit, the charging pile wireless communication unit and the charging pile communication unit, controlling the charging bow to start ascending the bow by the charging bow control unit, sending an ascending bow completion instruction to the charging pile display screen through the charging pile communication unit when the charging bow returns to an initial position, sending the ascending bow completion instruction to the vehicle-mounted display screen through the charging pile communication unit, the charging pile wireless communication unit, the vehicle-mounted wireless communication unit and the vehicle-mounted communication unit, controlling the charging bow to stop ascending the bow by the charging bow control unit, and displaying ascending completion when the ascending bow completion instruction is received by the charging pile display screen and the vehicle-mounted display screen.

The flow of the operator controlling discharge through the vehicle-mounted display screen is as follows:

the vehicle-mounted display screen and the charging pile display screen display connection failure on the interface after receiving the connection failure instruction, the charging pile control unit controls the charging pile to start to lift the charging pile after receiving the charging pile lifting instruction, and sends a lifting instruction to the charging pile display screen through the charging pile communication unit when the charging pile returns to the initial position, the lifting instruction is sent to the vehicle-mounted display screen through the charging pile communication unit, the charging pile wireless communication unit, the vehicle-mounted wireless communication unit and the vehicle-mounted communication unit, the charging pile control unit controls the charging pile to stop lifting the charging pile, the charging pile display screen and the vehicle-mounted display screen display the lifting completion on the interface after receiving the lifting instruction, and the step 2 is returned,

the method comprises the steps that after a connection success instruction is received by a vehicle-mounted display screen and a charging pile display screen, connection success is displayed on an interface, after the connection success instruction is received by a switch control unit, a switch is controlled to be disconnected, after the charging pile control unit receives a charging pile descending instruction, the charging pile is controlled to stop descending, when the charging pile stops descending, a descending instruction is sent to the vehicle-mounted display screen through a charging pile communication unit, a charging pile wireless communication unit, a vehicle-mounted wireless communication unit and a vehicle-mounted communication unit, the descending instruction is sent to the charging pile display screen through the charging pile communication unit, when the descending instruction is received by the vehicle-mounted display screen and the charging pile display screen, the descending of the charging pile is displayed on the interface, and step 3 is entered;

Step 3, the operator selects discharging on the vehicle-mounted display screen, the vehicle-mounted display screen sends a discharging instruction to the charging pile main control unit through the vehicle-mounted communication unit, the vehicle-mounted wireless communication unit, the charging pile wireless communication unit and the charging pile communication unit, the discharging instruction is sent to the BMS main control unit through the vehicle-mounted communication unit, after the BMS main control unit receives the discharging instruction, the discharging amount required to be discharged by the vehicle-mounted battery is calculated according to the current electric quantity of the vehicle-mounted battery, the discharging amount required to be discharged by the vehicle-mounted battery is sent to the charging pile main control unit through the vehicle-mounted communication unit, the vehicle-mounted wireless communication unit, the charging pile wireless communication unit and the charging pile communication unit, the charging pile main control unit controls the conduction of the DC-AC module after receiving the discharging amount required to be discharged by the vehicle-mounted battery and the discharging instruction,

and 4, the vehicle-mounted battery starts discharging through the pantograph positive electrode, the pantograph negative electrode, the charging pantograph positive electrode and the charging pantograph negative electrode, the DC-AC module receives the direct current output by the charging pantograph positive electrode and the charging pantograph negative electrode, converts the direct current into alternating current and sends the alternating current to the mains supply interface unit, the mains supply interface unit feeds back the alternating current to the mains supply network, the BMS main control unit sends the discharging time and the discharging quantity of the vehicle-mounted battery to the vehicle-mounted display screen through the vehicle-mounted communication unit, the vehicle-mounted wireless communication unit, the charging pile wireless communication unit and the charging pile communication unit, the discharging time and the discharging quantity of the vehicle-mounted battery are sent to the charging pile display screen through the vehicle-mounted communication unit, the vehicle-mounted display screen and the charging pile display screen after the discharging quantity and the discharging time of the vehicle-mounted battery are received by the vehicle-mounted display screen and the charging pile display screen, the discharging completion instruction is displayed on the interface after the discharging completion instruction of the vehicle-mounted display screen and the charging pile display screen is received by the vehicle-mounted communication unit, and the charging pile wireless communication unit is detected to complete when the discharging of the vehicle-mounted battery is detected.

And 5, selecting an ascending bow on the vehicle-mounted display screen by an operator, sending an ascending bow instruction to the charging bow control unit by the vehicle-mounted display screen through the vehicle-mounted communication unit, the vehicle-mounted wireless communication unit, the charging pile wireless communication unit and the charging pile communication unit, controlling the charging bow to start ascending the bow by the charging bow control unit, sending an ascending bow completion instruction to the charging pile display screen through the charging pile communication unit when the charging bow returns to an initial position, sending the ascending bow completion instruction to the vehicle-mounted display screen through the charging pile communication unit, the charging pile wireless communication unit, the vehicle-mounted wireless communication unit and the vehicle-mounted communication unit, controlling the charging bow to stop ascending the bow by the charging bow control unit, and displaying ascending bow completion when the charging pile and the vehicle-mounted display screen receive the ascending bow completion instruction.

The flow of charging control by an operator through the charging pile display screen is as follows:

step 1, an operator selects to descend an arch on a charging pile display screen interface, the charging pile display screen sends an arch descending instruction to a charging arch control unit through a charging pile communication unit, the arch descending instruction is sent to a switch control unit through the charging pile communication unit, the arch descending instruction is sent to a voltage detection module through the charging pile communication unit, the charging pile wireless communication unit, the vehicle-mounted wireless communication unit and the vehicle-mounted communication unit, the charging arch control unit controls the charging arch to start descending after receiving the arch descending instruction, the switch control unit controls a switch to be closed after receiving the arch descending instruction, and the voltage detection module starts detecting the voltage acquired by a voltage acquisition end 41 after receiving the arch descending instruction;

if the voltage detection module detects that the voltage acquired by the voltage acquisition end 41 is always at a high level within a certain detection time, the voltage detection module sends a connection failure instruction to the charging pile display screen through the vehicle-mounted communication unit, the vehicle-mounted wireless communication unit, the charging pile wireless communication unit and the charging pile communication unit, sends a connection failure instruction to the vehicle-mounted display screen through the vehicle-mounted communication unit, and sends an arch lifting instruction to the charging arch control unit through the vehicle-mounted communication unit, the vehicle-mounted wireless communication unit, the charging pile wireless communication unit and the charging pile communication unit;

the charging pile display screen and the vehicle-mounted display screen display connection failure on the interface after receiving the connection failure instruction, the charging pile control unit controls the charging pile to start to lift the charging pile after receiving the charging pile lifting instruction, and sends a lifting instruction to the charging pile display screen through the charging pile communication unit when the charging pile returns to the initial position, the lifting instruction is sent to the vehicle-mounted display screen through the charging pile communication unit, the charging pile wireless communication unit, the vehicle-mounted wireless communication unit and the vehicle-mounted communication unit, the charging pile control unit controls the charging pile to stop lifting the charging pile, the charging pile display screen and the vehicle-mounted display screen display the lifting completion on the interface after receiving the lifting instruction, and the step 2 is returned,

If the voltage detection module detects that the voltage acquired by the voltage acquisition end 41 is at a low level within a certain detection time, the voltage detection module sends a connection success instruction to the charging pile display screen through the vehicle-mounted communication unit, the vehicle-mounted wireless communication unit, the charging pile wireless communication unit and the charging pile communication unit, sends the connection success instruction to the switch control unit through the vehicle-mounted communication unit, the charging pile wireless communication unit and the charging pile communication unit, sends the connection success instruction to the vehicle-mounted display screen through the vehicle-mounted communication unit, sends the stop bow lowering instruction to the charging bow control unit through the vehicle-mounted communication unit, the vehicle-mounted wireless communication unit, the charging pile wireless communication unit and the charging pile communication unit,

the charging pile display screen and the vehicle-mounted display screen display the connection success on the interface after receiving the connection success instruction, the switch control unit controls the switch to be disconnected when receiving the connection success instruction, the charging arch control unit controls the charging arch to stop descending after receiving the arch descending instruction, and sends an arch descending completion instruction to the charging pile display screen through the charging pile communication unit when the charging arch stops descending, and sends the arch descending completion instruction to the vehicle-mounted display screen through the charging pile communication unit, the charging pile wireless communication unit, the vehicle-mounted wireless communication unit and the vehicle-mounted communication unit, and the vehicle-mounted display screen and the charging pile display screen display the completion of descending on the interface when receiving the arch descending completion instruction, and the step 3 is entered;

Step 3, an operator selects to start charging on a charging pile display screen, the charging pile display screen sends a charging instruction to a charging pile main control unit through a charging pile communication unit, the charging instruction is sent to a BMS main control unit through the charging pile communication unit, a charging pile wireless communication unit, a vehicle-mounted wireless communication unit and the vehicle-mounted communication unit, the BMS main control unit calculates the charging quantity required to be charged by the vehicle-mounted battery according to the current electric quantity of the vehicle-mounted battery after receiving the charging instruction, and sends the charging quantity required to be charged by the vehicle-mounted battery to the charging pile main control unit through the vehicle-mounted communication unit, the vehicle-mounted wireless communication unit, the charging pile wireless communication unit and the charging pile communication unit, and the charging pile main control unit controls the conduction of an AC-DC module after receiving the charging instruction and the charging quantity required to be charged by the vehicle-mounted battery;

step 4, the AC-DC module receives AC commercial power through a commercial power interface unit, converts the AC commercial power into DC power, charges a vehicle-mounted battery through a charging bow positive electrode, a charging bow negative electrode, a pantograph positive electrode and a pantograph negative electrode, the BMS main control unit sends charging time and charging quantity of the vehicle-mounted battery to a charging pile display screen through a vehicle-mounted communication unit, a vehicle-mounted wireless communication unit, a charging pile wireless communication unit and a charging pile communication unit, the charging time and the charging quantity of the vehicle-mounted battery are sent to the vehicle-mounted display screen through the vehicle-mounted communication unit, the vehicle-mounted display screen and the charging pile display screen receive the charging time and the charging quantity of the vehicle-mounted battery, the charging time and the charging quantity of the vehicle-mounted battery are displayed, and when the BMS main control unit detects that the charging of the vehicle-mounted battery is completed, the charging main control unit sends a charging completion instruction to the charging pile display screen through the vehicle-mounted communication unit, the charging pile display screen and the charging pile display screen;

And 5, selecting an ascending bow on the charging pile display screen by an operator, sending an ascending bow instruction to the charging bow control unit by the charging pile display screen through the charging pile communication unit, controlling the charging bow to start ascending the bow by the charging bow control unit, sending an ascending bow completion instruction to the charging pile display screen through the charging pile communication unit when the charging bow returns to an initial position, sending the ascending bow completion instruction to the vehicle-mounted display screen through the charging pile communication unit, the charging pile wireless communication unit, the vehicle-mounted wireless communication unit and the vehicle-mounted communication unit, controlling the charging bow to stop ascending the bow by the charging bow control unit, and displaying ascending bow completion when the charging pile display screen and the vehicle-mounted display screen receive the ascending bow completion instruction.

The operator controls the flow of discharging through the charging pile display screen as follows:

if the voltage detection module detects that the voltage acquired by the voltage acquisition end 41 is always at a high level within a certain detection time, the voltage detection module sends a connection failure instruction to the charging pile display screen through the vehicle-mounted communication unit, the vehicle-mounted wireless communication unit, the charging pile wireless communication unit and the charging pile communication unit, sends a connection failure instruction to the vehicle-mounted display screen through the vehicle-mounted communication unit, sends an arch lifting instruction to the charging arch control unit through the vehicle-mounted communication unit, the vehicle-mounted wireless communication unit, the charging pile wireless communication unit and the charging pile communication unit,

the method comprises the steps that after a connection success instruction is received by a vehicle-mounted display screen and a charging pile display screen, connection success is displayed on an interface, after the connection success instruction is received by a switch control unit, a switch is controlled to be disconnected, after the charging pile control unit receives a charging pile descending instruction, the charging pile is controlled to stop descending the charging pile, when the charging pile stops descending the charging pile, a descending instruction is sent to the charging pile display screen through a charging pile communication unit, the descending instruction is sent to the vehicle-mounted display screen through the charging pile communication unit, a charging pile wireless communication unit, the vehicle-mounted wireless communication unit and the vehicle-mounted communication unit, when the descending instruction is received by the charging pile display screen and the vehicle-mounted display screen, descending of the charging pile is completed on the interface, and step 3 is entered;

Step 3, an operator selects discharging on a charging pile display screen, the charging pile display screen sends a discharging instruction to a charging pile main control unit through a charging pile communication unit, the discharging instruction is sent to a BMS main control unit through the charging pile communication unit, a charging pile wireless communication unit, a vehicle-mounted wireless communication unit and a vehicle-mounted communication unit, after the BMS main control unit receives the discharging instruction, the discharging amount required to be discharged by the vehicle-mounted battery is calculated according to the current electric quantity of the vehicle-mounted battery, the discharging amount required to be discharged by the vehicle-mounted battery is sent to the charging pile main control unit through the vehicle-mounted communication unit, the vehicle-mounted wireless communication unit, the charging pile wireless communication unit and the charging pile communication unit, and the charging pile main control unit controls the on of a DC-AC module after receiving the discharging amount required to be discharged by the vehicle-mounted battery and the discharging instruction;

and 4, starting discharging of the vehicle-mounted battery through the pantograph positive electrode, the pantograph negative electrode, the charging pantograph positive electrode and the charging pantograph negative electrode, receiving direct current output by the charging pantograph positive electrode and the charging pantograph negative electrode by the DC-AC module, converting the direct current into alternating current, sending the alternating current to the mains supply interface unit, feeding back the alternating current to the mains supply network by the mains supply interface unit, sending the discharging time and the discharging quantity of the vehicle-mounted battery to the vehicle-mounted display screen through the vehicle-mounted communication unit, sending the discharging time and the discharging quantity of the vehicle-mounted battery to the charging pile display screen through the vehicle-mounted communication unit, sending the discharging time and the discharging quantity to the charging pile communication unit through the vehicle-mounted communication unit, displaying the discharging quantity and the discharging time on an interface after the discharging quantity and the discharging time of the vehicle-mounted battery are received by the vehicle-mounted display screen and the charging pile display screen, sending a discharging completion instruction to the charging pile display screen through the vehicle-mounted communication unit when the discharging completion instruction of the vehicle-mounted battery is detected by the BMS main control unit, sending the discharging completion instruction to the charging pile communication unit to the vehicle-mounted display screen, and the charging pile display screen when the discharging completion instruction is received on the vehicle-mounted display screen.

And 5, selecting an ascending bow on the charging pile display screen by an operator, sending an ascending bow instruction to the charging bow control unit by the charging pile display screen through the charging pile communication unit, controlling the charging bow to start ascending the bow by the charging bow control unit, sending an ascending bow completion instruction to the charging pile display screen through the charging pile communication unit when the charging bow returns to the initial position, sending the ascending bow completion instruction to the vehicle-mounted display screen through the charging pile communication unit, the charging pile wireless communication unit, the vehicle-mounted wireless communication unit and the vehicle-mounted communication unit, controlling the charging bow to stop ascending the bow by the charging bow control unit, and displaying ascending bow completion when the charging pile display screen and the vehicle-mounted display screen receive the ascending bow completion instruction.

As shown in fig. 7, in other embodiments, the simulated vehicle includes a human-machine interaction module, a BMS main control unit, an on-board battery, an on-board communication unit, and an on-board wireless communication unit; the analog charging pile comprises a charging bow control unit, a charging pile main control unit, a charging and discharging control unit, a mains supply interface unit, a charging pile communication unit and a charging pile wireless communication unit. In the embodiment, the charge and discharge test system can unidirectionally control charge and discharge through a man-machine interaction module on one side of the simulated vehicle. In this embodiment, the human-computer interaction module simulating one side of the vehicle is a vehicle-mounted display screen. In this embodiment, the flow of the charge-discharge test system controlling the charge through the in-vehicle display is the same as the flow of the charge-discharge test system (bi-directional) controlling the charge through the in-vehicle display.

As shown in fig. 8, in other embodiments, the simulated vehicle includes a BMS main control unit, an on-board battery, an on-board communication unit, and an on-board wireless communication unit; the simulation charging pile comprises a man-machine interaction module, a charging bow control unit, a charging pile main control unit, a charging and discharging control unit, a mains supply interface unit, a charging pile communication unit and a charging pile wireless communication unit. In the embodiment, the charge and discharge test system can unidirectionally control charge and discharge through a man-machine interaction module on one side of the simulated charge pile. In this embodiment, the man-machine interaction module simulating one side of the charging pile is a charging pile display screen. In this embodiment, the flow of the charge-discharge test system controlling the charge through the charge stake display screen is the same as the flow of the charge-discharge test system (bi-directional) controlling the charge through the charge stake display screen.

As shown in fig. 9, a charging test system includes an analog vehicle, an analog charging pile, and the connection detection device. As shown in fig. 9, the simulated vehicle includes a man-machine interaction module, a BMS main control unit, a vehicle-mounted battery, a vehicle-mounted communication unit, and a vehicle-mounted wireless communication unit; the simulation charging pile comprises a man-machine interaction module, a charging bow control unit, a charging pile main control unit, a charging control unit, a mains supply interface unit, a charging pile communication unit and a charging pile wireless communication unit.

As shown in fig. 9, the vehicle-mounted wireless communication unit is connected with the charging pile wireless communication unit in a wireless communication manner; the vehicle-mounted wireless communication unit is connected with the vehicle-mounted communication unit; the vehicle-mounted communication unit is connected with the man-machine interaction module, the BMS main control unit and the voltage detection module; the BMS main control unit is connected with the vehicle-mounted battery; the vehicle-mounted battery is connected with the positive electrode and the negative electrode of the pantograph; the charging pile wireless communication unit is connected with the charging pile communication unit; the charging pile communication unit is connected with the man-machine interaction module, the charging pile main control unit, the charging arch control unit and the switch control unit; the charging pile main control unit is connected with the charging control unit, and the charging control unit is connected with the charging arch positive electrode, the charging arch negative electrode and the mains supply interface unit; the mains supply interface unit is connected with a mains supply network; the charging bow control unit is connected with the charging bow and is used for controlling the action of the charging bow, such as lowering the bow, stopping lowering the bow, lifting the bow and stopping lifting the bow. In this embodiment, the charge control unit includes an AC-DC module. The AC-DC module is connected with the charging pile main control unit, the charging arch positive electrode, the charging arch negative electrode and the mains supply interface unit. The AC-DC module is used for converting alternating current commercial power into direct current signals; the charging pile main control unit is used for controlling the on-off of the AC-DC module.

The utility power interface unit is used for receiving alternating current utility power from a utility power grid, the charging control unit is used for converting the alternating current utility power into direct current, and the man-machine interaction module is used for receiving the instruction, sending the instruction and displaying the test result. In this embodiment, the human-computer interaction module on the side of the simulated vehicle and the human-computer interaction module on the side of the simulated charging pile can both control charging, i.e. the charging test system can control charging in both directions. In this embodiment, the human-computer interaction module simulating one side of the vehicle is a vehicle-mounted display screen, and the human-computer interaction module simulating one side of the charging pile is a charging pile display screen. The charging control process of the charging test system through the vehicle-mounted display screen and the charging pile display screen is the same as the charging control process of the charging test system (bidirectional) through the vehicle-mounted display screen and the charging pile display screen.

As shown in fig. 10, in other embodiments, the simulated vehicle includes a human-machine interaction module, a BMS main control unit, an on-board battery, an on-board communication unit, and an on-board wireless communication unit; the analog charging pile comprises a charging bow control unit, a charging pile main control unit, a charging control unit, a mains supply interface unit, a charging pile communication unit and a charging pile wireless communication unit. In this embodiment, the charging test system may unidirectionally control charging through a human-machine interaction module on the side of the simulated vehicle. In this embodiment, the human-computer interaction module simulating one side of the vehicle is a vehicle-mounted display screen. In this embodiment, the flow of the charge test system controlling the charge through the in-vehicle display screen is the same as the flow of the charge test system controlling the charge through the in-vehicle display screen (bi-directional) described above.

As shown in fig. 11, in other embodiments, the simulated vehicle includes a BMS main control unit, an on-board battery, an on-board communication unit, and an on-board wireless communication unit; the simulation charging pile comprises a man-machine interaction module, a charging bow control unit, a charging pile main control unit, a charging control unit, a mains supply interface unit, a charging pile communication unit and a charging pile wireless communication unit. In the embodiment, the charging test system can unidirectionally control charging and discharging through a man-machine interaction module on one side of the simulated charging pile. In this embodiment, the man-machine interaction module simulating one side of the charging pile is a charging pile display screen. In this embodiment, the flow of the charging test system controlling the charging through the charging post display screen is the same as the flow of the charging test system controlling the charging through the charging post display screen (bi-directional) described above.

In other embodiments, the analog charging stake in the above-described charging test system (including unidirectional and bidirectional) and the above-described charging and discharging test system (including unidirectional and bidirectional) further includes a utility power grid unit. The mains supply feed network unit is connected with the mains supply interface unit and is used for controlling the on-off of the mains supply interface unit according to alternating current mains supply.

When the commercial power feed network unit detects that alternating current commercial power is abnormal, a control signal is sent to the commercial power interface unit, and the commercial power interface unit is controlled to be disconnected; and when the commercial power feed network unit detects that the alternating current commercial power is normal, a control signal is sent to the commercial power interface unit to control the commercial power interface unit to be conducted.

In this embodiment, ac mains abnormality means that ac mains is islanding. Island effect refers to an effect that a grid-connected photovoltaic power generation system still maintains a power supply state to adjacent parts of lines in a power grid when the power grid suddenly loses voltage.

Example two

The difference between this embodiment and the first embodiment is that: when the charging bow contacts with the pantograph, one copper bar of the charging bow contacts with one copper bar of the pantograph, the other copper bar of the charging bow contacts with the other copper bar of the pantograph, and the one copper bar of the charging bow is not contacted with the two copper bars of the pantograph.

As shown in fig. 3, in the present embodiment, one copper bar of the pantograph includes a first conductive end 11 of the pantograph, a second conductive end 12 of the pantograph, and an insulating connecting member 3, and the other copper bar includes a third conductive end 13 of the pantograph, a fourth conductive end 14 of the pantograph, and an insulating connecting member 3; one copper bar of the charging bow comprises a charging bow first conductive end 21, a charging bow second conductive end 22 and an insulating connecting piece 3, and the other copper bar comprises a charging bow third conductive end 23, a charging bow fourth conductive end 24 and an insulating connecting piece 3.

As shown in fig. 3, in the present embodiment, two copper bars of the charging bow are parallel to each other, two copper bars of the pantograph are parallel to each other, and two copper bars of the charging bow are parallel to two copper bars of the pantograph. The two conductive ends of one copper bar of the charging bow correspond to the two conductive ends of one copper bar of the pantograph, the two conductive ends of the other copper bar of the charging bow correspond to the two conductive ends of the other copper bar of the pantograph, the charging bow connecting pole and the charging bow grounding pole are arranged on different copper bars, the charging bow positive electrode and the charging bow negative electrode are arranged on different copper bars, and each conductive end on the pantograph corresponds to each conductive end polarity on the charging bow. Correspondingly, the pantograph connecting electrode and the pantograph grounding electrode are arranged on different copper bars, and the pantograph positive electrode and the pantograph negative electrode are arranged on different copper bars.

In other embodiments, one copper bar of the charging bow is arranged in parallel with one copper bar of the pantograph, and two conductive ends of the copper bar of the charging bow correspond to the positions of two conductive ends of the copper bar of the pantograph; the other copper bar of the charging bow is arranged in parallel with the other copper bar of the pantograph, and the two conductive ends of the other copper bar of the charging bow correspond to the positions of the two conductive ends of the other copper bar of the pantograph; the two copper bars of the charging bow are not parallel, the two copper bars of the pantograph are also not parallel, the charging bow connecting electrode and the charging bow grounding electrode are arranged on different copper bars, the charging bow positive electrode and the charging bow negative electrode are arranged on different copper bars, and each conducting end on the pantograph corresponds to each conducting end polarity on the charging bow. Correspondingly, the pantograph connecting electrode and the pantograph grounding electrode are arranged on different copper bars, and the pantograph positive electrode and the pantograph negative electrode are arranged on different copper bars.

Example III

As shown in fig. 4, the difference between the present embodiment and the second embodiment is that: the copper bar of the charging bow is a cylinder, and the surface of the copper bar of the pantograph, which is contacted with the copper bar of the charging bow, is provided with a semi-cylindrical groove corresponding to the copper bar of the charging bow.

Example IV

As shown in fig. 5, the present embodiment is different from the first embodiment in that: the charging bow is a copper bar comprising a charging bow first conductive end 21, a charging bow second conductive end 22, a charging bow third conductive end 23, a charging bow fourth conductive end 24 and three insulating connectors 3. An insulating connecting piece 3 is connected between the charging bow first conductive end 21 and the charging bow second conductive end 22, an insulating connecting piece 3 is connected between the charging bow second conductive end 22 and the charging bow third conductive end 23, and an insulating connecting piece 3 is connected between the charging bow third conductive end 23 and the charging bow fourth conductive end 24. The charging bow first conductive end 21, the charging bow second conductive end 22, the charging bow third conductive end 23 and the charging bow fourth conductive end 24 are made of conductive materials. The insulating connectors 3 are all made of insulating materials.

As shown in fig. 5, in the present embodiment, the pantograph is a copper bar, and the copper bar includes a first conductive end 11 of the pantograph, a second conductive end 12 of the pantograph, a third conductive end 13 of the pantograph, a fourth conductive end 14 of the pantograph, and three insulating connectors 3. An insulating connecting piece 3 is connected between the first conductive end 21 of the pantograph and the second conductive end 22 of the pantograph, an insulating connecting piece 3 is connected between the second conductive end 22 of the pantograph and the third conductive end 23 of the pantograph, and an insulating connecting piece 3 is connected between the third conductive end 23 of the pantograph and the fourth conductive end 24 of the pantograph. The first conductive end 11, the second conductive end 12, the third conductive end 13 and the fourth conductive end 14 are made of conductive materials. The insulating connectors 3 are all made of insulating materials.

As shown in fig. 5, the charging-bow first conductive end 21, the charging-bow second conductive end 22, the charging-bow third conductive end 23, and the charging-bow fourth conductive end 24 are sequentially arranged from left to right, and correspondingly, the pantograph first conductive end 12, the pantograph second conductive end 12, the pantograph third conductive end 13, and the pantograph fourth conductive end 14 are sequentially arranged from left to right.

In other embodiments, the charging bow positive electrode may be other conductive ends of the charging bow, such as charging bow second conductive end 22, charging bow third conductive end 23, or charging bow fourth conductive end 24, so long as it corresponds to the position of the charging bow positive electrode on the pantograph. Similarly, the charging bow negative electrode, the charging bow connecting electrode and the charging bow grounding electrode can also be other conductive ends on the charging bow.

Example five

The difference between this embodiment and the fourth embodiment is that: the copper bar of the charging bow is a cylinder, and the surface of the copper bar of the pantograph, which is contacted with the copper bar of the charging bow, is provided with a semi-cylindrical groove corresponding to the copper bar of the charging bow.

Example six

The difference between this embodiment and the first embodiment is that: the switch control unit is connected with the vehicle-mounted communication unit and the switch; one end of the switch is connected with the pantograph connecting electrode, and the other end of the switch is connected with the pantograph grounding electrode; the voltage acquisition end 41 of the voltage detection module is connected with the charging bow connecting electrode and one end of a resistor R1, and the other end of the resistor R1 is connected with a power supply VCC; the charging bow grounding electrode and the voltage detection module share the ground GND.

The above-mentioned embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.

Claims

1. A connection detection device, characterized in that: comprises a charging bow, a pantograph and a connection detection unit; the charging bow comprises a charging bow positive electrode, a charging bow negative electrode, a charging bow connecting electrode and a charging bow grounding electrode which are mutually insulated; the pantograph comprises a pantograph positive electrode, a pantograph negative electrode, a pantograph connecting electrode and a pantograph grounding electrode which are mutually insulated; the charging bow positive electrode, the charging bow negative electrode, the charging bow connecting electrode and the charging bow grounding electrode are respectively and correspondingly arranged with the pantograph positive electrode, the pantograph negative electrode, the pantograph connecting electrode and the pantograph grounding electrode; the connection detection unit comprises a voltage detection module, a resistor R1, a switch and a switch control unit;

2. The connection detection apparatus according to claim 1, wherein: the charging bow comprises two copper bars; the pantograph comprises two copper bars; one copper bar of the charging bow comprises a charging bow first conductive end and a charging bow second conductive end which are mutually insulated, and the other copper bar comprises a charging bow third conductive end and a charging bow fourth conductive end which are mutually insulated; one copper bar of the pantograph comprises a first pantograph conducting end and a third pantograph conducting end which are mutually insulated, and the other copper bar comprises a second pantograph conducting end and a fourth pantograph conducting end which are mutually insulated; the charging bow first conductive end and the pantograph first conductive end are arranged on the left upper side, the charging bow second conductive end and the pantograph second conductive end are arranged on the left lower side, the charging bow third conductive end and the pantograph third conductive end are arranged on the right upper side, and the charging bow fourth conductive end and the pantograph fourth conductive end are arranged on the right lower side;

3. The connection detection apparatus according to claim 2, wherein: one of the first conductive end of the charging bow and the fourth conductive end of the charging bow is a charging bow positive electrode, the other is a charging bow negative electrode, one of the second conductive end of the charging bow and the third conductive end of the charging bow is a charging bow connecting electrode, the other is a charging bow grounding electrode, or the other is a charging bow connecting electrode, the other is a charging bow grounding electrode, and the other is a charging bow positive electrode.

4. A connection detection apparatus according to claim 3, wherein: the two copper bars of the charging bow are parallel to each other; the two copper bars of the pantograph are parallel to each other; the two copper bars of the charging bow are perpendicular to the two copper bars of the pantograph.

5. The connection detection apparatus according to claim 1, wherein: the charging bow comprises two copper bars; the pantograph comprises two copper bars; one copper bar of the charging bow comprises a charging bow first conductive end and a charging bow second conductive end which are mutually insulated, and the other copper bar comprises a charging bow third conductive end and a charging bow fourth conductive end which are mutually insulated; one copper bar of the pantograph comprises a first pantograph conducting end and a second pantograph conducting end which are mutually insulated, and the other copper bar comprises a third pantograph conducting end and a fourth pantograph conducting end which are mutually insulated; one copper bar of the charging bow is parallel to one copper bar of the pantograph; the other copper bar of the charging bow is parallel to the other copper bar of the pantograph;

6. The connection detection apparatus according to claim 5, wherein: the charging bow positive electrode and the charging bow negative electrode are arranged on different copper bars, and the charging bow connecting electrode and the charging bow grounding electrode are arranged on different copper bars.

7. The connection detection apparatus according to claim 1, wherein: the charging bow is a copper bar; the pantograph is a copper bar; the copper bar of the charging bow comprises a charging bow first conductive end, a charging bow second conductive end, a charging bow third conductive end and a charging bow fourth conductive end which are arranged in an insulating manner; the copper bar of the pantograph comprises a first conductive end of the pantograph, a second conductive end of the pantograph, a third conductive end of the pantograph and a fourth conductive end of the pantograph which are mutually insulated; one copper bar of the charging bow is parallel to one copper bar of the pantograph;

8. The connection detection apparatus according to claim 5 or 6 or 7, wherein: the copper bar of the charging bow is a cylinder; the surface of the copper bar of the pantograph, which is contacted with the copper bar of the charging pantograph, is provided with a semi-cylindrical groove corresponding to the copper bar of the charging pantograph.

9. A charging test system, characterized by: comprising a simulated vehicle, a simulated charging pile and a connection detection device according to any one of claims 1-8; the simulated vehicle comprises a BMS main control unit, a vehicle-mounted battery, a vehicle-mounted communication unit and a vehicle-mounted wireless communication unit; the analog charging pile comprises a charging bow control unit, a charging pile main control unit, a charging control unit, a mains supply interface unit, a charging pile communication unit and a charging pile wireless communication unit; the charging control unit comprises an AC-DC module; the simulation vehicle further comprises a man-machine interaction module, the man-machine interaction module is connected with the vehicle-mounted communication unit, and/or the simulation charging pile further comprises a man-machine interaction module, and the man-machine interaction module is connected with the charging pile communication unit;

10. The charge test system of claim 9, wherein: the analog charging pile further comprises a mains supply feed network unit; the mains supply feed network unit is connected with the mains supply interface unit.

11. A charge and discharge test system is characterized in that: comprising a simulated vehicle, a simulated charging pile and a connection detection device according to any one of claims 1-8; the simulated vehicle comprises a BMS main control unit, a vehicle-mounted battery, a vehicle-mounted communication unit and a vehicle-mounted wireless communication unit; the analog charging pile comprises a charging bow control unit, a charging pile main control unit, a charging and discharging control unit, a mains supply interface unit, a charging pile communication unit and a charging pile wireless communication unit; the charge-discharge control unit comprises an AC-DC module and a DC-AC module; the simulation vehicle further comprises a man-machine interaction module, the man-machine interaction module is connected with the vehicle-mounted communication unit, and/or the simulation charging pile further comprises a man-machine interaction module, and the man-machine interaction module is connected with the charging pile communication unit;

12. The charge and discharge test system of claim 11, wherein: the analog charging pile further comprises a mains supply feed network unit; the mains supply feed network unit is connected with the mains supply interface unit.