Bidirectional power conversion equipment for charging pile

Abstract

A bidirectional power conversion device for a charging pile provided by the present invention comprises a base, the top of the base is fixedly provided with a charging pile body, the outer side of the charging pile body is provided with a charging wire, the end, away from the charging pile body, of the charging wire is provided with a charging head, and the outer side of the charging pile body is provided with an opening and closing assembly. A clamping groove is formed in the outer side of the charging pile body, and a protection assembly is arranged on the outer side of the charging pile body. According to the bidirectional power conversion equipment for the charging pile, through the arrangement of the protection assembly, damage of an external environment to a charging part can be effectively reduced, the service life of the charging part is prolonged, the maintenance cost is reduced, friction damage to the part in the protection process is avoided, and it is ensured that the protection assembly is not prone to deformation or loosening in the long-term use process; the sliding smoothness of the protective cover and the durability of the protective effect are guaranteed, the opening and closing assembly is arranged, effective protection can be formed for the internal structure during equipment operation, and safety accidents caused by touch of irrelevant personnel are prevented.

Description

Technical Field

[0001] The present invention relates to the technical field related to charging piles, and in particular to a bidirectional power conversion device for a charging pile. Background Art

[0002] With the popularity of electric vehicles, charging piles, as important supporting facilities for electric vehicles, have attracted much attention for their technological development. Bidirectional power conversion equipment plays a key role in charging piles. It can realize the two-way flow of electric energy. It can not only charge the electric energy of the power grid into the battery of the electric vehicle, but also feed the electric energy in the electric vehicle battery back to the power grid when needed. In the forward operation mode, it can convert the AC power on the grid side into DC power suitable for the electric vehicle battery, effectively extending the battery life. In the reverse operation stage, when the grid load is peak or the vehicle is idle, the equipment can reversely convert the electric energy stored in the electric vehicle into AC power, and connect it to the grid through the grid dispatching system, significantly improving the comprehensive energy utilization efficiency. Therefore, there is a special need for a bidirectional power conversion device for charging piles.

[0003] Chinese patent CN214929106U, published on November 30, 2021, discloses a protective device for charging piles. By setting up a photovoltaic cable for the charging pile, the protective device can automatically lift the power supply equipment according to the rising water level when in use. This can effectively avoid damage to the equipment and reduce the risk of electric shock to personnel. However, the protective device for the charging pile is easily affected by the external environment during use. For example, dust accumulation may cause poor charging contact, rainwater erosion may cause short circuit failure, and human collision or misoperation may easily cause component damage, which not only shortens the service life of the charging components, but also increases the maintenance frequency and cost of the equipment. Under long-term use or external vibration, impact, etc., deformation, loosening and other problems are prone to occur, resulting in failure of the protective function, and inability to provide continuous and effective protection for the charging components. The opening and closing are not smooth enough, which is inconvenient for operators to inspect or operate, affecting the convenience of use of the equipment and it is difficult to effectively block direct sunlight and rain erosion. Summary of the Invention

[0004] The purpose of the present invention is to provide a bidirectional power conversion device for a charging pile to solve the problem that the existing protective equipment for charging piles proposed in the above background technology is easily affected by the external environment during use. For example, dust accumulation may cause poor charging contact, rain erosion may cause short circuit failure, and human collision or misoperation may easily cause component damage, which not only shortens the service life of the charging components, but also increases the maintenance frequency and cost of the equipment. Under long-term use or external vibration, impact, etc., deformation, loosening and other problems are prone to occur, resulting in failure of the protective function, and inability to provide continuous and effective protection for the charging components. The opening and closing are not smooth enough, which is inconvenient for operators to repair or operate, affecting the convenience of use of the equipment and making it difficult to effectively block direct sunlight and rain erosion.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bidirectional power conversion device for a charging pile, comprising a base, a charging pile body is fixedly installed on the top of the base, a charging line is provided on the outside of the charging pile body, a charging head is provided on the end of the charging line away from the charging pile body, a mounting bracket is fixedly installed on the outside of the charging pile body, an exhaust port is provided on the outside of the charging pile body, a heat dissipation hole is provided on the outside of the charging pile body, an opening and closing component is provided on the outside of the charging pile body, a clamping groove is provided on the outside of the charging pile body, and the top of the charging pile body is fixedly installed. It is equipped with an installation column, a connecting column is fixedly installed on the top of the charging pile body, a shielding cover is fixedly installed on the top of the installation column, and a protective component is provided on the outside of the charging pile body; the protective component includes a connecting rod, the connecting rod is installed on the outside of the charging pile body, a fixing plate 1 is fixedly installed on the bottom of the connecting rod, a motor is fixedly installed on the top of the fixing plate 1, a transmission screw is fixedly installed on the output end of the motor, a protective cover is threadedly connected to the outside of the transmission screw, a slide rail is fixedly installed on the bottom of the fixing plate 1, and a fixing plate 2 is fixedly installed on the outside of the charging pile body.

[0006] Preferably, the first fixing plate is fixedly connected to the charging pile body, and the slide rail is fixedly connected to the second fixing plate.

[0007] Preferably, the slide rail is slidably connected to the protective cover, and the protective cover does not contact the charging cable, the charging head and the mounting bracket.

[0008] Preferably, two identical groups of connecting rods are provided, and the two groups of connecting rods and the fixing plate and the charging pile body are combined into a triangular structure.

[0009] Preferably, the opening and closing assembly includes a fixed seat, which is installed on the outside of the charging pile body, a rotating shaft is rotatably installed inside the fixed seat, a protective door is fixedly installed on the outside of the rotating shaft, a clamping column is fixedly installed on the outside of the protective door, a handle is fixedly installed on the outside of the protective door, and a display screen is provided on the outside of the protective door.

[0010] Preferably, the clamping posts and the clamping slots are provided in the same multiple groups, and the multiple groups of the clamping posts and the clamping slots are in one-to-one correspondence and are all adapted.

[0011] Preferably, the fixing seat and the rotating shaft do not contact the protective component, and the size of the shielding cover is larger than the size of the charging pile body.

[0012] Preferably, the charging cable, charging head and mounting frame are provided in two identical groups, and the two groups of the charging cable, charging head and mounting frame are symmetrically distributed about the vertical center line of the charging pile body, and the charging cable is in contact with the mounting frame.

[0013] Compared with the prior art, the present invention has the following beneficial effects: the bidirectional power conversion device for the charging pile is provided with a protective component, and the protective cover is driven by a motor to slide along the slide rail. When the device is idle, the charging cable, charging head and mounting bracket are completely covered, which can effectively reduce the damage to the charging components caused by the external environment, extend their service life and reduce maintenance costs. At the same time, the protective cover does not contact the charging cable, charging head and mounting bracket, avoiding friction damage to the components during the protection process, ensuring that the protective component is not easily deformed or loosened during long-term use, ensuring the smooth sliding of the protective cover and the durability of the protective effect. An opening and closing component is provided, and the protective door is rotated and opened and closed by a fixed seat and a rotating shaft. With the precise adaptation of the clamping column and the clamping groove, it can not only effectively protect the internal structure of the device during operation, preventing unauthorized personnel from touching it and causing safety accidents, but also facilitate operators to open it for inspection or operation. The shielding cover can effectively block direct sunlight and rain erosion, reducing the impact of bad weather on the device. The two sets of charging components are independent of each other, ensuring the stability and safety of the charging process, so that charging and discharging do not interfere with each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the three-dimensional structure of the present invention Figure 1 ;

[0015] Figure 2 Schematic diagram of the three-dimensional structure of the present invention Figure 2 ;

[0016] Figure 3 This is a schematic diagram of the three-dimensional split structure of the present invention;

[0017] Figure 4 This is a schematic diagram of the structure of the charging cable and the charging head cooperating with each other in the present invention;

[0018] Figure 5 This is a schematic diagram of the structure of the protection component of the present invention;

[0019] Figure 6 This is a schematic diagram of the disassembled structure of the protection component of the present invention;

[0020] Figure 7 This is a schematic diagram of the split structure of the opening and closing component of the present invention.

[0021] In the figure: 1. Base; 2. Charging pile body; 3. Charging cable; 4. Charging head; 5. Mounting bracket; 6. Exhaust vent; 7. Heat dissipation hole; 8. Opening and closing assembly; 801. Fixed seat; 802. Rotating shaft; 803. Protective door; 804. Snap-on column; 805. Handle; 806. Display screen; 9. Snap-on slot; 10. Mounting column; 11. Connecting column; 12. Shielding cover; 13. Protective assembly; 1301. Connecting rod; 1302. Fixed plate 1; 1303. Motor; 1304. Transmission screw; 1305. Protective cover; 1306. Slide rail; 1307. Fixed plate 2. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-7The present invention provides a technical solution: a bidirectional power conversion device for a charging pile, comprising a base 1, a charging pile body 2 is fixedly installed on the top of the base 1, a charging line 3 is provided on the outside of the charging pile body 2, a charging head 4 is provided on the end of the charging line 3 away from the charging pile body 2, a mounting bracket 5 is fixedly installed on the outside of the charging pile body 2, an exhaust port 6 is provided on the outside of the charging pile body 2, a heat dissipation hole 7 is provided on the outside of the charging pile body 2, an opening and closing component 8 is provided on the outside of the charging pile body 2, a clamping groove 9 is provided on the outside of the charging pile body 2, a mounting column 10 is fixedly installed on the top of the charging pile body 2, a connecting column 11 is fixedly installed on the top of the charging pile body 2, a shielding cover 12 is fixedly installed on the top of the mounting column 10, and a protective component 13 is provided on the outside of the charging pile body 2; the protective component 13 includes a connecting rod 1301, the connecting rod 1301 is installed on the outside of the charging pile body 2, and the bottom of the connecting rod 1301 is fixedly installed There is a fixed plate 1302, a motor 1303 is fixedly installed on the top of the fixed plate 1302, a transmission screw 1304 is fixedly installed on the output end of the motor 1303, a protective cover 1305 is threadedly connected to the outer side of the transmission screw 1304, a slide rail 1306 is fixedly installed on the bottom of the fixed plate 1302, and a fixed plate 2 1307 is fixedly installed on the outer side of the charging pile body 2. By setting up a protective component 13, the motor 1303 drives the transmission screw 1304 to drive the protective cover 1305 to slide along the slide rail 1306, which can completely cover the charging cable 3, charging head 4 and mounting bracket 5 when the equipment is idle, which can effectively reduce the damage to the charging components caused by the external environment, extend their service life and reduce maintenance costs. At the same time, the protective cover 1305 does not contact the charging cable 3, charging head 4 and mounting bracket 5, thereby avoiding friction damage to the components during the protection process and ensuring that the protective component 13 is not easily deformed or loosened during long-term use.

[0024] Furthermore, the fixing plate 1302 is fixedly connected to the charging pile body 2, and the sliding rail 1306 is fixedly connected to the fixing plate 2 1307. By setting the fixing plate 1302 and the charging pile body 2, the stability of the motor 1303 during operation is ensured, and loosening of components due to vibration is avoided. At the same time, the sliding rail 1306 is rigidly connected to the charging pile body 2 and the charging pile bidirectional power conversion device through the fixing plate 2 1307, thereby ensuring the installation accuracy and straightness of the sliding rail 1306, providing reliable support for the smooth sliding of the protective cover 1305, and reducing the jamming phenomenon during the sliding process.

[0025] Furthermore, the slide rail 1306 and the protective cover 1305 are slidably connected, and the protective cover 1305 does not contact the charging cable 3, the charging head 4 and the mounting bracket 5. By setting the slide rail 1306 and the protective cover 1305, it is ensured that the protective cover 1305 does not shift during the lifting process, thereby ensuring the accuracy of the protective position, avoiding friction and collision between the protective cover 1305 and the charging components during the sliding process, and preventing the charging components from being damaged due to mechanical contact. At the same time, it also reduces the wear of the protective cover 1305 itself and extends the service life of both.

[0026] Furthermore, two identical groups of connecting rods 1301 are provided, and the two groups of connecting rods 1301 and the fixing plate 1302 and the charging pile body 2 are combined to form a triangular structure. By providing the connecting rods 1301 and the fixing plate 1302 and the charging pile body 2, when the equipment is subjected to external force impact or vibration caused by long-term use, the triangular structure can effectively disperse the force and avoid deformation or displacement of the fixing plate 1302, thereby ensuring the stability of the overall structure of the protective component 13 and ensuring the long-term and reliable operation of the lifting function of the protective cover 1305.

[0027] Furthermore, the opening and closing component 8 includes a fixed seat 801, which is installed on the outside of the charging pile body 2. A rotating shaft 802 is rotatably installed inside the fixed seat 801, and a protective door 803 is fixedly installed on the outside of the rotating shaft 802. A clamping column 804 is fixedly installed on the outside of the protective door 803, and a handle 805 is fixedly installed on the outside of the protective door 803. A display screen 806 is provided on the outside of the protective door 803. By setting up the opening and closing component 8, the protective door 803 can be opened and closed by rotating through the fixed seat 801 and the rotating shaft 802. The precise fit between the clamping column 804 and the clamping slot 9 can not only form effective protection for the internal structure when the equipment is running, preventing unrelated personnel from touching and causing safety accidents, but also facilitate operators to open it for inspection or operation.

[0028] Furthermore, the same multiple groups of clamping columns 804 and clamping grooves 9 are provided, and the multiple groups of clamping columns 804 correspond to and match the clamping grooves 9 one by one. By providing multiple groups of clamping columns 804 and clamping grooves 9, the protective door 803 can be effectively prevented from accidentally opening due to vibration or external force during the operation of the equipment, thereby ensuring the reliability of protection. At the same time, multi-point clamping also makes the protective door 803 evenly stressed, avoiding deformation caused by excessive local force.

[0029] Furthermore, the fixing seat 801 and the rotating shaft 802 do not contact the protective component 13, and the size of the shielding cover 12 is larger than the size of the charging pile body 2. By setting the fixing seat 801, the rotating shaft 802 and the protective component 13, it is ensured that the two can complete the corresponding operations independently and smoothly, avoiding the normal operation of the equipment affected by the collision of components, and forming a larger shielding area to fully block direct sunlight from shining on the charging pile body 2, reducing the performance degradation of the equipment caused by high temperature, and effectively blocking rainwater to prevent rainwater from seeping into the interior through the gap at the top of the equipment, thereby improving the protection ability of the equipment in bad weather.

[0030] Furthermore, two identical groups of charging cables 3, charging heads 4 and mounting brackets 5 are provided, and the two groups of charging cables 3, charging heads 4 and mounting brackets 5 are symmetrically distributed about the vertical center line of the charging pile body 2. The charging cables 3 are in contact with the mounting brackets 5. By providing two groups of charging cables 3, charging heads 4 and mounting brackets 5, charging and discharging services are provided at the same time, which greatly improves the utilization efficiency of the equipment. The charging cables 3 are in contact with the mounting brackets 5, and the mounting brackets 5 can support and store the charging cables 3, avoiding wear or entanglement caused by arbitrary dragging of the charging cables 3, thereby ensuring the orderliness of the charging process. The two groups of charging components are independent of each other and each forms a complete charging circuit. There is no mutual interference during the charging and discharging process, thereby ensuring the stability and safety of power conversion.

[0031] Working principle: First, the operator places the base 1 on the flat ground to ensure that the base 1 is stable and does not shake. The base 1 is fixed to the ground through expansion bolts and other fixings to enhance the overall stability of the equipment. The charging pile body 2 is fixedly installed on the top of the base 1 to ensure that the charging pile body 2 is firmly connected to the base 1 without looseness. The mounting bracket 5 is installed on the outside of the charging pile body 2. One end of the charging line 3 is connected to the circuit inside the charging pile body 2, and the other end is connected to the charging head 4. The charging line 3 is placed on the mounting bracket 5 to ensure that the charging line 3 is in contact with the mounting bracket 5 to achieve support and storage of the charging line 3. One end of the two sets of connecting rods 1301 is fixed to the outside of the charging pile body 2, and the other end is connected to the fixing plate 130 2 is fixedly connected, so that the two groups of connecting rods 1301, the fixing plate 1302 and the charging pile body 2 are combined to form a triangular structure, the motor 1303 is installed on the top of the fixing plate 1302, and the output end of the motor 1303 is connected to the transmission screw 1304, one end of the slide rail 1306 is fixedly installed on the bottom of the fixing plate 1302, and the other end is fixedly installed on the outside of the charging pile body 2 through the fixing plate 2 1307, the protective cover 1305 is threadedly connected to the transmission screw 1304, and the protective cover 1305 is slidably connected to the slide rail 1306, ensuring that the protective cover 1305 and the charging line 3, the charging head 4 and the mounting bracket 5 are not in contact with each other, the fixing seat 801 is installed on the outside of the charging pile body 2, and the rotating mounting is rotatably installed inside the fixing seat 801. The protective door 803 is fixedly installed on the outside of the rotating shaft 802, and the clamping column 804, the handle 805 and the display screen 806 are respectively installed on the outside of the protective door 803, and a clamping groove 9 adapted to the clamping column 804 is opened on the outside of the charging pile body 2 to ensure that multiple groups of clamping columns 804 correspond to the clamping grooves 9 one by one, and the mounting column 10 and the connecting column 11 are fixedly installed on the top of the charging pile body 2, and the shielding cover 12 is fixedly installed on the top of the mounting column 10 to ensure that the size of the shielding cover 12 is larger than the size of the charging pile body 2, and the fixing seat 801 and the rotating shaft 802 are not in contact with the protective component 13. The operator opens the protective door 803 through the handle 805. At this time, the clamping column 804 is disengaged from the clamping groove 9, and the operator The motor 1303 rotates forward, and the motor 1303 drives the transmission screw 1304 to rotate. Under the guidance of the threaded transmission and the slide rail 1306, the protective cover 1305 slides upward along the slide rail 1306, exposing the charging line 3, the charging head 4 and the mounting bracket 5. The charging head 4 is removed from the mounting bracket 5 and connected to the charging interface of the electric vehicle. The charging program is started through the display screen 806 outside the protective door 803. The bidirectional power conversion circuit inside the charging pile body 2 starts to work, converting the power of the grid into power suitable for the battery of the electric vehicle. The electric vehicle is charged through the charging line 3 and the charging head 4. During the charging process, the display screen 806 displays the charging progress, voltage, current and other information in real time. After charging is completed, the charging program is disconnected first.Then remove the charging head 4 from the charging interface of the electric vehicle and put it back on the mounting bracket 5. Operate the motor 1303 to rotate in the opposite direction, driving the transmission screw 1304 to rotate in the opposite direction, so that the protective cover 1305 slides downward along the slide rail 1306, completely covering the charging line 3, the charging head 4 and the mounting bracket 5. Close the protective door 803, so that the clamping column 804 is embedded in the corresponding clamping groove 9 to fix the protective door 803. Open the protective door 803, raise the protective cover 1305, connect the discharge interface of the electric vehicle to the charging pile body 2 through the charging head 4 and the charging line 3, and start the discharge program through the display screen 806. The bidirectional power conversion circuit inside the charging pile body 2 converts the electrical energy in the electric vehicle battery into electrical energy suitable for feeding back to the power grid and transmits it to the power grid. After the discharge is completed, disconnect the discharge program, remove the charging head 4 and put it back on the mounting bracket 5, lower the protective cover 1305, close the protective door 803, and complete the entire operation process.

[0032] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A bidirectional power conversion device for a charging pile, comprising a base (1), characterized in that: A charging pile body (2) is fixedly mounted on the top of the base (1), a charging line (3) is provided on the outside of the charging pile body (2), a charging head (4) is provided on the end of the charging line (3) away from the charging pile body (2), a mounting frame (5) is fixedly mounted on the outside of the charging pile body (2), an exhaust port (6) is provided on the outside of the charging pile body (2), a heat dissipation hole (7) is provided on the outside of the charging pile body (2), an opening and closing component (8) is provided on the outside of the charging pile body (2), a clamping groove (9) is provided on the outside of the charging pile body (2), a mounting column (10) is fixedly mounted on the top of the charging pile body (2), a connecting column (11) is fixedly mounted on the top of the charging pile body (2), a shielding cover (12) is fixedly mounted on the top of the mounting column (10), and a protective component (13) is provided on the outside of the charging pile body (2); The protective component (13) includes a connecting rod (1301), the connecting rod (1301) is installed on the outside of the charging pile body (2), a fixing plate 1 (1302) is fixedly installed on the bottom of the connecting rod (1301), a motor (1303) is fixedly installed on the top of the fixing plate 1 (1302), a transmission screw (1304) is fixedly installed on the output end of the motor (1303), the outer side of the transmission screw (1304) is threadedly connected to a protective cover (1305), a slide rail (1306) is fixedly installed on the bottom of the fixing plate 1 (1302), and a fixing plate 2 (1307) is fixedly installed on the outside of the charging pile body (2).

2. The bidirectional power conversion device for a charging pile according to claim 1, characterized in that: The first fixing plate (1302) is fixedly connected to the charging pile body (2), and the slide rail (1306) is fixedly connected to the second fixing plate (1307).

3. The bidirectional power conversion device for a charging pile according to claim 1, characterized in that: The slide rail (1306) and the protective cover (1305) are in sliding connection, and the protective cover (1305) does not contact the charging cable (3), the charging head (4) and the mounting frame (5).

4. The bidirectional power conversion device for a charging pile according to claim 1, characterized in that: Two identical groups of connecting rods (1301) are provided, and the combination of the two groups of connecting rods (1301), the first fixing plate (1302) and the charging pile body (2) forms a triangular structure.

5. The bidirectional power conversion device for a charging pile according to claim 1, characterized in that: The opening and closing assembly (8) comprises a fixing seat (801), the fixing seat (801) being mounted on the outside of the charging pile body (2), a rotating shaft (802) being rotatably mounted inside the fixing seat (801), a protective door (803) being fixedly mounted on the outside of the rotating shaft (802), a clamping column (804) being fixedly mounted on the outside of the protective door (803), a handle (805) being fixedly mounted on the outside of the protective door (803), and a display screen (806) being provided on the outside of the protective door (803).

6. The bidirectional power conversion device for a charging pile according to claim 5, characterized in that: The clamping posts (804) and the clamping slots (9) are provided in the same multiple groups, and the multiple groups of the clamping posts (804) and the clamping slots (9) are matched one-to-one.

7. The bidirectional power conversion device for a charging pile according to claim 5, characterized in that: The fixing seat (801) and the rotating shaft (802) are not in contact with the protective component (13), and the size of the shielding cover (12) is larger than the size of the charging pile body (2).

8. The bidirectional power conversion device for a charging pile according to claim 1, characterized in that: The charging cable (3), charging head (4) and mounting frame (5) are provided in two identical groups, and the two groups of the charging cable (3), charging head (4) and mounting frame (5) are symmetrically distributed about the vertical center line of the charging pile body (2), and the charging cable (3) is in contact with the mounting frame (5).

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