A stacked modular charging box

Abstract

The utility model discloses a kind of stacked modularization charging box transformer, relate to charging box transformer structure field, including box, three chambers are in the box, respectively high pressure chamber, low pressure chamber and transformer chamber, high pressure chamber is provided with high voltage switch cabinet, low pressure chamber is provided with low voltage switch cabinet, transformer chamber is provided with transformer;The incoming line end of high voltage switch cabinet has high pressure connector for being connected with power grid, the outgoing line end of high voltage switch cabinet is connected with the incoming line end of transformer, the outgoing line end of transformer is connected with the incoming line end of low voltage switch cabinet, and the outgoing line end of low voltage switch cabinet is connected to the input interface of charging pile;Transformer chamber and low pressure chamber are arranged on the same vertical direction;High pressure chamber is located in the side of transformer chamber or / and low pressure chamber;Charging pile is placed in the mounting space of the side of high pressure chamber and the other side of transformer chamber or / and low pressure chamber respectively.The charging box transformer disclosed in the utility model can simplify installation, effectively reduce floor area and scheduling difficulty.

Description

Technical Field

[0001] This utility model relates to the field of charging box transformation structure, and in particular to a stacked modular charging box transformation. Background Technology

[0002] With the rapid development of electric vehicles and the expansion of the electric vehicle market, the demand for charging is also increasing. Currently, electric vehicles are usually charged by using charging stations to connect to the municipal power grid. However, these charging stations are fixed on the ground, and because they are connected to the power grid, their location cannot be moved, which makes scheduling inconvenient. Furthermore, the installation of charging stations requires the separate installation of transformers, and then the laying of cables to connect the transformers to each charging station. The installation process is complex, occupies a large area, and is also inconvenient for scheduling.

[0003] Therefore, the technology needs to be improved. Utility Model Content

[0004] The purpose of this utility model is to provide a stackable modular charging box to address the problems mentioned above, which simplifies installation and effectively reduces the footprint and scheduling difficulty.

[0005] The technical solution adopted by this utility model is as follows: A stacked modular charging transformer includes a housing, which has three chambers: a high-voltage chamber, a low-voltage chamber, and a transformer chamber. A high-voltage switchgear is installed in the high-voltage chamber, a low-voltage switchgear is installed in the low-voltage chamber, and a transformer is installed in the transformer chamber. The high-voltage switchgear has an inlet terminal for connecting to the power grid, the outlet terminal of the high-voltage switchgear is connected to the inlet terminal of the transformer, the outlet terminal of the transformer is connected to the inlet terminal of the low-voltage switchgear, and the outlet terminal of the low-voltage switchgear is connected to the input interface of the charging pile. Wherein: The transformer room and the low-voltage room are arranged in the same vertical direction; the high-voltage room is located on one side of the transformer room and / or the low-voltage room; the charging piles are placed in the installation space located on one side of the high-voltage room and the other side of the transformer room and / or the low-voltage room.

[0006] Furthermore, the transformer chamber is located above the low-pressure chamber, and the enclosure also has a ventilation duct. Low-pressure air inlets are provided on both the front and rear sides of the low-pressure chamber. One end of the ventilation duct is connected to the low-pressure chamber, and the connection point is located at the top of the low-pressure chamber. The other end of the ventilation duct is provided with a baffle, and a low-pressure air outlet is provided on the baffle, which is connected to the outside of the enclosure. The ventilation duct is not connected to the transformer chamber.

[0007] Furthermore, a pressure relief port is provided at the other end of the ventilation duct. A sealing plate is provided on the outside of the pressure relief port through a connector. The sealing plate seals the pressure relief port, and the breaking strength of the connector is less than the breaking strength of the sheet metal parts constituting the box.

[0008] Further, one side of the baffle is rotatably connected to the ventilation duct.

[0009] Further, a partition plate that blocks air circulation between the low-pressure chamber and the voltage transformation chamber is provided between the two chambers.

[0010] Further, voltage transformation air inlets are provided on both the front and rear side surfaces of the voltage transformation chamber, and a voltage transformation air outlet is provided at the top of the voltage transformation chamber.

[0011] Further, the box body has a ceiling, and the projections of the installation space, the high-voltage chamber, the low-pressure chamber and the voltage transformation chamber on the surface where the ceiling is located are all within the ceiling.

[0012] Further, both the low-pressure air outlet and the voltage transformation air outlet penetrate through the ceiling, a ventilation hood is provided on the ceiling, and the ventilation hood encloses the low-pressure air outlet and the voltage transformation air outlet; a ventilation opening is provided on a side surface of the ventilation hood.

[0013] Further, heat dissipation air openings are provided on both the front and rear sides of the high-voltage chamber.

[0014] In conclusion, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are: 1. In the present utility model, the voltage transformation chamber and the low-pressure chamber are arranged in the same vertical direction, and the high-voltage chamber and the installation space are arranged accordingly. Compared with other arrangement methods, such as the "grid-shaped" arrangement method or the "triangular-shaped" arrangement method, this stacked arrangement can effectively save the consumption of busbars. Meanwhile, since the low-pressure chamber and the voltage transformation chamber are arranged vertically, the floor area can also be reduced, and the entire box body will not be too high, thus ensuring the safety of the box body; 2. In the present utility model, the transformer, the low-voltage switch cabinet and the high-voltage switch cabinet are integrated in the box body, realizing multi-module integration and effectively reducing the floor space. Meanwhile, when connecting to the power grid, it is only necessary to connect the high-voltage switch cabinet to the power grid, and excessive embedding wiring operations are not required, which facilitates installation. Moreover, since all components are integrated in the box body, the connection between the high-voltage switch cabinet and the power grid can be disconnected during dispatching, and then the whole can be transported to the destination directly, which facilitates dispatching; 3. In the present utility model, by providing a pressure relief opening and connecting the closing plate with a connecting piece whose breaking strength is less than the breaking strength of the sheet metal part, when an arcing fault occurs, the high-pressure air in the low-pressure chamber breaks the connecting piece before damaging the sheet metal part, so that the closing plate no longer closes the pressure relief opening, the pressure relief opening is opened, and the high-pressure air escapes out of the box body from the pressure relief opening, achieving the purpose of rapid pressure relief of the low-pressure chamber; alternatively, by providing a pressure relief opening and rotatably connecting the baffle to the ventilation duct, when an arcing fault occurs, the high-pressure air in the low-pressure chamber overcomes the gravity of the baffle and pushes the baffle to rotate, so that the baffle no longer closes the pressure relief opening, the pressure relief opening is opened, and the high-pressure air escapes out of the box body from the pressure relief opening, achieving the purpose of rapid pressure relief of the low-pressure chamber; 4. In this utility model, the heat dissipation of the low-voltage switchgear is achieved through a separate ventilation duct, which prevents the heat generated by the low-voltage switchgear from entering the transformer room, thereby preventing the accumulation of heat in the transformer room. Attached Figure Description

[0015] This utility model will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 This is a two-sided oblique view of the exterior of this utility model; Figure 2 This is a front view of the present invention; Figure 3 This is a cross-sectional structural diagram of the present invention; Figure 4 for Figure 3 Enlarged diagram in the image; Figure 5 This is a schematic diagram showing the location distribution of the pressure relief ports; Figure 6 This is a schematic diagram showing the rotating connection between the baffle and the ventilation duct; The markings in the diagram are: 1-Enclosure; 2-Low-voltage chamber; 21-Low-voltage air inlet; 22-Low-voltage switchgear; 3-Transformer chamber; 31-Transformer air inlet; 32-Transformer air outlet; 33-Transformer; 4-High-voltage chamber; 41-Heat dissipation vent; 42-High-voltage switchgear; 5-Installation space; 51-Charging pile; 6-Roof; 7-Ventilation hood; 71-Ventilation opening; 8-Ventilation duct; 81-Low-voltage air outlet; 82-Baffle; 83-Pressure relief port; 84-Sealing plate; 85-Connecting parts. Detailed Implementation

[0016] In the description of this specification, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this specification and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this specification.

[0017] Furthermore, the use of terms such as "horizontal" or "vertical" in this specification does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0018] In the description of this specification, it should also be noted that, unless otherwise expressly specified and limited, the terms “set up,” “install,” “connect,” and “link” should be interpreted broadly. For example, a link can be a fixed link, a detachable link, or an integral link; it can be a mechanical link or an electrical link; it can be a direct link or an indirect link through an intermediate medium; it can be a connection within two components.

[0019] Example 1 like Figures 1-6 As shown, a stacked modular charging transformer includes a housing 1, which has three chambers: a high-voltage chamber 4, a low-voltage chamber 2, and a transformer chamber 3. The high-voltage chamber 4 houses a high-voltage switchgear 42, the low-voltage chamber 2 houses a low-voltage switchgear 22, and the transformer chamber 3 houses a transformer 33. The high-voltage switchgear 42 has a high-voltage connector for connection to the power grid at its inlet. The outlet of the high-voltage switchgear 42 is connected to the inlet of the transformer 33, and the outlet of the transformer 33 is connected to the inlet of the low-voltage switchgear 22. The outlet of the low-voltage switchgear 22 is connected to the input interface of a charging pile 51. Wherein: Transformer chamber 3 and low-voltage chamber 2 are arranged in the same vertical direction; high-voltage chamber 4 is located on one side of transformer chamber 3 and / or low-voltage chamber 2; charging piles 51 are respectively placed in the installation space 5 located on one side of high-voltage chamber 4 and the other side of transformer chamber 3 and / or low-voltage chamber 2.

[0020] In this embodiment, the transformer room 3 and the low-voltage room 2 are arranged in the same vertical direction, as are the high-voltage room 4 and the installation space 5. Compared to other arrangements, such as transformer room 3 and high-voltage room 4 being located on the left and right sides of low-voltage room 2, this effectively saves the amount of busbars (effectively shortening the distance between high-voltage room 4 and transformer room 3, and the distance between low-voltage room 2 and charging pile 51). Simultaneously, since low-voltage room 2 and transformer room 3 are arranged vertically, the footprint is reduced, and the entire enclosure 1 is not placed too high, ensuring the safety of enclosure 1. In this embodiment, the transformer 33, low-voltage switchgear 22, and high-voltage switchgear 42 are integrated into enclosure 1, achieving multi-module integration and effectively reducing the footprint. Furthermore, when connecting to the power grid, only high-voltage switchgear 42 needs to be connected, eliminating the need for extensive wiring, thus facilitating installation. Since all components are integrated into enclosure 1, the connection between high-voltage switchgear 42 and the power grid can be disconnected during dispatching, and the entire enclosure can then be transported to its destination, facilitating dispatching.

[0021] It should be noted that the interpretation of "transformer chamber 3 and low-voltage chamber 2 are arranged in the same vertical direction" can be that transformer chamber 3 is located above low-voltage chamber 2, so that transformer 33 is located above low-voltage switchgear 22; or it can be that low-voltage chamber 2 is located above transformer chamber 3, so that low-voltage switchgear 22 is located above transformer 33.

[0022] Regarding the arrangement where the main product is located "above the low-pressure chamber 2", the following description will further explain this arrangement. In one feasible implementation, the transformer chamber 3 is located above the low-pressure chamber 2. The enclosure 1 also has a ventilation duct 8. Low-pressure air inlets 21 are provided on both the front and rear sides of the low-pressure chamber 2. One end of the ventilation duct 8 is connected to the low-pressure chamber 2, and the connection point is located at the top of the low-pressure chamber 2. The other end of the ventilation duct 8 is provided with a baffle 82, and a low-pressure air outlet 81 is provided on the baffle 82, connecting to the outside of the enclosure 1. The ventilation duct 8 is not connected to the transformer chamber 3. The heat dissipation of the low-pressure switchgear 22 is achieved through a separate ventilation duct 8, preventing the heat generated by the low-pressure switchgear 22 from entering the transformer chamber 3, thereby preventing heat accumulation inside the transformer chamber 3.

[0023] One feasible implementation method for addressing the arcing fault in low-voltage switchgear 22 is to adopt at least the following feasible implementation methods.

[0024] In the first embodiment, a pressure relief port 83 is also provided at the other end of the ventilation duct 8. A sealing plate 84 is provided on the outside of the pressure relief port 83 through a connector 85. The sealing plate 84 seals the pressure relief port 83, and the fracture strength of the connector 85 is less than the fracture strength of the sheet metal parts constituting the housing 1. By providing a pressure relief port 83 and using a connector 85 with a fracture strength less than that of the sheet metal parts to connect the sealing plate 84, in the event of an arcing failure, the high-pressure air in the low-pressure chamber 2 will destroy the connector 85 before destroying the sheet metal parts, so that the sealing plate 84 will no longer seal the pressure relief port 83, the pressure relief port 83 will open, and the high-pressure air will escape from the pressure relief port 83 to the outside of the housing 1, thereby achieving the purpose of rapid pressure relief of the low-pressure chamber 2.

[0025] In the second implementation, by setting a pressure relief port 83 and using a baffle 82 to be rotatably connected to the ventilation duct 8, when an arcing fault occurs, the high-pressure air in the low-pressure chamber 2 will resist the gravity of the baffle 82 and push the baffle 82 to rotate, so that the baffle 82 is no longer blocking the pressure relief port 83, the pressure relief port 83 opens, and the high-pressure air escapes from the pressure relief port 83 to the outside of the housing 1, so as to achieve the purpose of rapid pressure relief of the low-pressure chamber 2.

[0026] In one feasible implementation, a partition is provided between the low-pressure chamber 2 and the transformer chamber 3 to prevent air from flowing between the two chambers. The partition further prevents the high-temperature air in the low-pressure chamber 2 from entering the transformer chamber 3, ensuring that the low-pressure chamber 2 dissipates heat through the ventilation duct 8, further preventing heat accumulation in the transformer chamber 3 and reducing damage to the transformer 33.

[0027] In one feasible implementation, the transformer chamber 3 has transformer air inlets 31 on both the front and rear sides, and a transformer air outlet 32 ​​on the top of the transformer chamber 3. The heat generated by the transformer 33 causes the air temperature inside the transformer chamber 3 to rise to high temperature. The high temperature air rises and flows out of the housing 1 through the transformer air outlet 32. The transformer chamber 3 draws in cold air from the outside through the transformer air inlets 31 to achieve heat dissipation of the transformer chamber 3.

[0028] In one feasible implementation, the housing 1 has a roof 6, and the projections of the installation space 5, high-pressure chamber 4, low-pressure chamber 2 and transformer chamber 3 on the surface of the roof 6 are all within the roof 6, so as to achieve the effect of rain protection.

[0029] In one feasible implementation, both the low-pressure air outlet 81 and the variable-pressure air outlet 32 ​​penetrate the ceiling 6. A ventilation hood 7 is provided on the ceiling 6, which surrounds the low-pressure air outlet 81 and the variable-pressure air outlet 32. Ventilation openings 71 are provided on the side of the ventilation hood 7 to prevent debris from falling into the low-pressure air outlet 81 and the variable-pressure air outlet 32 ​​from above, thus providing protection. The ventilation openings 71 ensure effective heat dissipation.

[0030] In one feasible implementation, heat dissipation vents 41 are provided on both the front and rear sides of the high-pressure chamber 4, and the high-pressure chamber 4 is effectively cooled through the heat dissipation vents 41.

[0031] In one feasible implementation, the bottom of the box 1 also has a bottom support frame, and there is a vertical gap between the upper surface of the bottom support frame and the bottom surface of the support legs of the box 1; so that there is space for air circulation at the bottom, reducing the possibility of ground moisture entering the interior of the box 1.

[0032] In one feasible implementation, the high-voltage chamber 4, the low-voltage chamber 2, and the transformer chamber 3 are all equipped with doors to house the corresponding electrical equipment and components.

[0033] In one feasible implementation, an antenna box (not shown in the figure) is also provided on the outside of the enclosure 1. The antenna box is connected to the main controller of the stacked modular charging transformer and is used to transmit power consumption-related data and operation data to the mobile terminal.

[0034] Example 2 An operation method for a stacked modular charging transformer, using the aforementioned stacked modular charging transformer, includes the following steps: S1: Connect the high-voltage connector of the high-voltage switchgear 42 to the power grid, and combine the corresponding switches in the high-voltage switchgear 42 and the low-voltage switchgear 22. The high-voltage power in the power grid is input to the transformer 33 through the high-voltage switchgear 42. The transformer 33 converts the high-voltage power into low-voltage power, which is then transmitted to the charging pile 51 through the low-voltage switchgear 22, so that the electrical appliances can be charged. S2: In step S1, the heat generated by the transformer 33 causes the air temperature in the transformer chamber 3 to rise to high temperature air. The high temperature air rises and flows out of the housing 1 from the transformer outlet 32. The transformer chamber 3 draws in cold air from the outside from the transformer inlet 31 to achieve heat dissipation of the transformer chamber 3. S3: In step S1, the heat generated by the high-voltage switchgear 42 raises the air temperature in the high-voltage chamber 4, forming high-temperature air. The high-temperature air flows out to the outside through the heat dissipation vent 41, while the outside cold air enters the high-voltage chamber 4 through the heat dissipation vent 41. S4: In step S1, the heat generated by the low-voltage switch cabinet 22 raises the air temperature in the low-voltage chamber 2 to form high-temperature air. The high-temperature air floats into the ventilation duct 8 and is discharged from the low-pressure air outlet 81 at the top of the ventilation duct 8 to the outside of the cabinet 1 to achieve heat dissipation of the low-voltage cabinet. S5: In step S1, if an arcing fault occurs in the low-voltage switchgear 22, the air pressure in the low-pressure chamber 2 will increase instantly, forming high-pressure air. The high-pressure air enters the ventilation duct 8. Since the low-pressure air inlet 21 depressurizes slowly, the high-pressure air will damage the connector 85 and / or resist the weight of the baffle 82 itself. The baffle 82 will rotate, the pressure relief port 83 will open, and the high-pressure air will escape from the pressure relief port 83 to the outside of the enclosure 1, thus completing the depressurization of the low-pressure chamber 2.

[0035] This invention is not limited to the specific embodiments described above. This invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A stacked modular charging box, characterized in that: The enclosure includes a housing (1), which has three chambers: a high-voltage chamber (4), a low-voltage chamber (2), and a transformer chamber (3). The high-voltage chamber (4) houses a high-voltage switchgear (42), the low-voltage chamber (2) houses a low-voltage switchgear (22), and the transformer chamber (3) houses a transformer (33). The high-voltage switchgear (42) has a high-voltage connector for connection to the power grid at its inlet. The outlet of the high-voltage switchgear (42) is connected to the inlet of the transformer (33), and the outlet of the transformer (33) is connected to the inlet of the low-voltage switchgear (22). The outlet of the low-voltage switchgear (22) is connected to the input interface of the charging pile (51). The transformer chamber (3) and the low-voltage chamber (2) are arranged in the same vertical direction; the high-voltage chamber (4) is located on one side of the transformer chamber (3) and / or the low-voltage chamber (2); the charging pile (51) is placed in the installation space (5) on one side of the high-voltage chamber (4) and the other side of the transformer chamber (3) and / or the low-voltage chamber (2).

2. The stacked modular charging box transformer according to claim 1, characterized in that: The transformer chamber (3) is located above the low-pressure chamber (2). The housing (1) also has a ventilation duct (8). The front and rear sides of the low-pressure chamber (2) are provided with low-pressure air inlets (21). One end of the ventilation duct (8) is connected to the low-pressure chamber (2), and the connection position is located at the top of the low-pressure chamber (2). The other end of the ventilation duct (8) is provided with a baffle (82), and a low-pressure air outlet (81) is provided on the baffle (82) and connected to the outside of the housing (1). The ventilation duct (8) is not connected to the transformer chamber (3).

3. The stacked modular charging box according to claim 2, characterized in that: At the other end of the ventilation duct (8), a pressure relief port (83) is provided. A sealing plate (84) is provided on the outside of the pressure relief port (83) through a connector (85). The sealing plate (84) seals the pressure relief port (83), and the fracture strength of the connector (85) is less than the fracture strength of the sheet metal parts constituting the box (1).

4. The stacked modular charging box transformer according to claim 2, characterized in that: One side of the baffle (82) is rotatably connected to the ventilation duct (8).

5. The stacked modular charging box transformer according to claim 2, characterized in that: There is a partition between the low-pressure chamber (2) and the variable-pressure chamber (3) to prevent air from flowing between the two chambers.

6. The stacked modular charging box transformer according to claim 2, characterized in that: The transformer chamber (3) has a transformer air inlet (31) on both the front and rear sides, and a transformer air outlet (32) on the top of the transformer chamber (3).

7. The stacked modular charging transformer according to any one of claims 2-6, characterized in that: The enclosure (1) has a roof (6), and the projections of the installation space (5), high-pressure chamber (4), low-pressure chamber (2) and transformer chamber (3) on the surface of the roof (6) are all within the roof (6).

8. The stacked modular charging box transformer according to claim 7, characterized in that: The low-pressure air outlet (81) and the variable pressure air outlet (32) both penetrate the ceiling (6). A ventilation hood (7) is provided on the ceiling (6), which surrounds the low-pressure air outlet (81) and the variable pressure air outlet (32). A ventilation opening (71) is provided on the side of the ventilation hood (7).

9. The stacked modular charging box transformer according to claim 1, characterized in that: The high-pressure chamber (4) is provided with heat dissipation vents (41) on both the front and rear sides.

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