[0029] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation and structure of a charging bow-type electric vehicle charging system proposed in accordance with the present invention will be given with reference to the accompanying drawings and preferred embodiments. , Characteristics and effects, detailed description is as follows.
[0030] See Figure 1 to Figure 4 , A charging bow-type electric vehicle charging system of the present invention includes a platform part and a vehicle-mounted part, and the platform part is installed on the platform. The platform part includes a rectifier cabinet 1, a charging rack 2, a charging bow 3, and an interface monitoring module 4. The rectifier cabinet 1 is connected to the charging rack 2, and the charging rack 2 is connected to the charging bow 3 through the charging bow walking mechanism. The module 4 is arranged on the charging stand 2. Specifically, the rectifier cabinet 1 and the charging rack 2 are integrally formed, so that the lines in the rectifier cabinet can directly reach the charging bow and be electrically connected to the charging bow after being laid inside the charging rack. The rectifier cabinet 1 is provided with a rectifier module 11, a power distribution module 12, and a charging monitoring module 13. The rectifier cabinet 1 is powered by an external three-phase alternating current, and the output end of the three-phase alternating current is connected to the input end of the rectifier module 11. The rectifier module 11 rectifies the external high-voltage three-phase AC power and outputs DC power that meets the requirements of electric vehicles. The output end of the rectifier module 11 is electrically connected to the charging gun 5 and the charging bow 3 through the power distribution module 12 and supplies DC power to them. The power distribution module 12 is used to distribute power to the DC charging terminal, which is allocated to charging according to the national standard. Electricity required for gun or charging bow. The charging monitoring module is connected to the rectification module through the CAN bus, and there are multiple rectifying modules. The charging monitoring module 13 controls the number of switches of the rectifying module 11 to control the output power; the charging monitoring module 13 and the power distribution module 12 Communication is also achieved through CAN bus connection to control whether the charging gun 5 outputs electric energy or the charging bow 3 outputs electric energy. The interface monitoring module 4 includes a first single-chip computer 41 connected to the charging monitoring module 13. The first single-chip computer 41 is connected to the charging bow control module 43 through the first communication conversion module 42 and controls it. The charging bow control module 43 Then the walking mechanism of the charging bow is controlled to realize the movement of the charging bow 3. The first single-chip computer 41 is also connected to the wireless communication module 44. When the wireless communication module 44 and the vehicle-mounted wireless module 103 perform wireless communication, the first single-chip computer receives the communication information and controls the charging monitoring module 13 or the charging bow control module. 43 operations. The above-mentioned charging monitoring module 13 communicates with the first single-chip microcomputer through the CAN bus to realize the information exchange between the two.
[0031] The vehicle-mounted part includes a bus bar 6, a battery pack 7, a display screen 8, a BMS module 9, and a vehicle-mounted monitoring module 10. The vehicle-mounted monitoring module 10 includes a second single-chip computer 101 which is connected to the bus 6 through a second communication conversion module 102. The second single-chip computer 101 is also connected to the BMS module 9 and the vehicle-mounted wireless module 103 respectively. The wireless communication between the module 103 and the wireless communication module 44 is realized, and wireless communication methods include directional WIFI, infrared, radio frequency, and so on. The bus bar 6 is arranged on the top of the electric vehicle, and the output end of the bus bar 6 is connected to the input end of the battery pack 7. The battery pack 7 is connected to the BMS module 9 through CAN bus communication. The BMS module 9 is used for real-time monitoring The power information of the electric vehicle battery pack 7 and the like are transmitted to the touch screen 8 for the driver to view. The BMS module 9 communicates with the second single-chip computer 101 through the CAN bus to obtain the information received by the vehicle monitoring module. The BMS module 9 is also connected to the touch-sensitive display screen 8 through CAN bus communication.
[0032] The above-mentioned first communication conversion module 42 and second communication conversion module 102 are both used to realize mutual conversion between CAN communication and PLC communication. The PLC communication mentioned here refers to communication via PLC power line, which directly utilizes existing wires and does not require additional wiring to realize data transmission, reducing network investment and greatly saving costs. When the charging bow 3 is docked with the bus 6 for charging, the interface monitoring module 4 of the platform part and the on-board monitoring module 10 of the vehicle-mounted part can realize information transmission and interaction through the PLC power line. Therefore, the CAN communication protocol is adopted between the modules in the rectifier cabinet 1, and the modules included in the vehicle-mounted part also adopt the CAN communication protocol. However, when the charging bow 3 is docked with the bus 6 for charging, the platform The communication between the part and the vehicle-mounted part adopts PLC communication protocol. Preferably, the chip models of the above-mentioned first single-chip microcomputer and the second single-chip microcomputer are STM32F103; in addition, the single-chip microcomputer model adopted by the charging monitoring module is also STM32F103.
[0033] In order to realize the accurate and automatic connection between the charging bow 3 and the bus bar 6, an image recognition module 31 is provided on the charging bow 3, and the image recognition module 31 is essentially a graphic sensor. The image recognition module 31 is connected to the charging bow control module 43 on the interface monitoring module 4. After the information detected by the image recognition module 31 is transmitted to the charging bow control module 43, the charging bow control module 43 controls the charging bow walking mechanism to make the charging bow 3 reach the designated position, and fully and accurately dock with the bus bar 6.
[0034] Preferably, in order to realize safe charging, a temperature sensor 32 is provided on the charging bow 3 to detect the temperature of the electrode plate of the charging bow 3 during charging. The temperature sensor 32 is connected to the charging bow control module 43. When the temperature is high When the threshold is reached, the temperature sensor 32 feeds back information so that the charging bow control module 43 drives the charging bow walking mechanism to rise and stop charging.
[0035] Preferably, in order to realize safe charging, a pressure sensor 33 is provided on the charging bow 3 for detecting the pressure between the charging bow 3 and the busbar 6 during charging, and the pressure sensor 33 is connected to the charging bow control module 43 When the pressure between the charging bow 3 and the busbar 6 is abnormal, the pressure sensor 33 feeds back information to the charging bow control module 43, which controls the charging bow walking mechanism to raise and stop charging.
[0036] Preferably, in order to ensure the safe use of electricity in the rectifier cabinet, a leakage protection switch and an AC contactor are provided at the AC input end of the rectifier cabinet 1.
[0037] In order to realize the free adjustment or movement of the charging bow in three dimensions, the charging bow walking mechanism includes left and right linear motors 21 fixed on the charging frame 2. The left and right sliding parts 221 of the left and right linear motors 21 are fixedly provided with The left and right linear motors 21 are perpendicular to the front and rear linear motors 22, the front and rear sliding parts 221 of the front and rear linear motors 22 are fixedly provided with a telescopic motor 23, and the output shaft 231 of the telescopic motor 23 is connected to the charging bow 3 to achieve a small range The charging bow is adjusted up and down; the control ends of the left and right linear motors 21, the front and rear linear motors 22, and the telescopic motor 23 are all electrically connected to the charging bow control module 43. The guide rails of the above-mentioned left and right linear motors 21 and the guide rails of the front and rear linear motors 22 are perpendicular to each other to realize the movement of the charging bow 3 in the four directions of front, rear, left, and right. The above-mentioned left, right, front and rear directions are based on the driver sitting in the driving position.
[0038] Preferably, a protective cover 61 that can be automatically opened or closed is provided on the busbar 6, and the drive mechanism control end of the protective cover 61 is connected to the second single-chip computer 102 on the vehicle monitoring module 10. The vehicle monitoring module 10 The protective cover 61 can be controlled to open during charging, and the protective cover 61 can be controlled to close after the charging is completed.
[0039] The working principle of the present invention is specifically as follows:
[0040] After the vehicle reaches the charging position, the driver presses the display screen 8 to start charging. After receiving the instruction, the BMS module 9 sends the instruction to the on-board monitoring module 10. The on-board wireless module 103 in the on-board monitoring module 10 uses wireless communication on the one hand. The charging requirement is sent to the wireless communication module 44 in the interface monitoring module 4. On the other hand, the on-board monitoring module 10 sends the charging requirement to the bus 6, and the on-board monitoring module 10 controls to open the protective cover 61 to wait for charging. After the interface monitoring module 4 receives the charging request, on the one hand, its internal charging bow control module 43 starts to control the charging bow walking mechanism to drive the charging bow 3 to move, and the image recognition module 31 provided on the charging bow 3 detects the position information of the bus 6 Then it feeds back to the charging bow control module 43, and then the charging bow control module 43 issues corresponding instructions to make the charging bow walking mechanism accurately connect the charging bow 3 with the bus 6; on the other hand, the interface monitoring module 4 sends the charging request to the charging The monitoring system 13 controls the rectifier module 11 and the power distribution module 12 to prepare for charging. After the charging bow 3 and the bus 6 are fully docked, the charging is started and the DC carrier communication is started, that is, the PLC power line carrier communication is entered into the charging communication Process. After the battery pack is fully charged, the BMS module 9 issues a stop command, which is transmitted to the wireless communication module 44 from the on-board wireless module 103 through wireless communication, and then to the charging monitoring system 13, and the charging monitoring system 13 controls the rectifier module 11 and power The distribution module 12 stops the DC output. At the same time, the charging bow control module 43 controls the charging bow 3 to rise, and finally closes the protective cover 61, and the charging is completed.
[0041] The above are only the preferred embodiments of the present invention. Any simple modification or equivalent of the above embodiments made by any person skilled in the art without departing from the scope of the technical solution of the present invention based on the technical essence of the present invention Changes and modifications still fall within the scope of the technical solution of the present invention.
