A direct current charging pile charging conversion device

Abstract

The utility model discloses a direct current charging pile charging conversion device of electric automobile charging pile device technical field, include: bottom plate, panel, backboard, joist, upper crossbeam, side stand, back support, insulating support, negative pole copper bar, positive pole copper bar, alternating current A phase copper bar, alternating current B phase copper bar and alternating current C phase copper bar. The direct current charging pile charging conversion device provided by the utility model can realize the upper alternating current copper bar input and the lower direct current copper bar output of the back portion of the direct current charging pile charging conversion device, and the structure is clear, the wire arrangement is beautiful and neat, the production manufacturing cost is greatly reduced, and the assembly efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of electric vehicle charging pile devices, specifically to a DC charging pile charging conversion device. Background Technology

[0002] With the increasing use of new energy electric vehicles, the demand for electric vehicle charging piles is constantly increasing, leading to a growing demand for power modules within these charging piles and a variety of charging conversion devices. Currently, ordinary charging conversion devices suffer from the following problems: 1. Their complex structure, long production and assembly cycles, and high costs. Due to their large size, the internal space utilization of the charging equipment cabinet is low, often requiring larger charging pile dimensions, further increasing costs. 2. The base plate and back plate of ordinary charging conversion devices are separate structures. Processing and assembly errors frequently result in misalignment of the plugs and sockets on the back of the power module, causing significant assembly difficulties and requiring rework or re-production of the back plate. 3. Maintenance and replacement of internal components in ordinary charging conversion devices are difficult, and secondary failures are easily generated during disassembly. 4. Ordinary charging conversion devices have poor compatibility, reliability, and maintainability; non-independent components are difficult to standardize for production. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a DC charging pile charging conversion device that can realize AC copper busbar input at the upper part of the back of the DC charging pile charging conversion device and DC copper busbar output at the lower part. The structure is clear, the wiring layout is beautiful and neat, which greatly reduces the production and manufacturing cost and improves the assembly efficiency.

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] This utility model provides a DC charging pile charging conversion device, including: a base plate, a panel, a back plate, a support beam, an upper crossbeam, a side column, a back support, an insulating support, a negative copper busbar, a positive copper busbar, an AC A-phase copper busbar, an AC B-phase copper busbar, and an AC C-phase copper busbar.

[0006] The back plate and front plate are fixedly connected to the two sides of the base plate perpendicularly to it. The support beam is fixedly connected to the bottom surface of the base plate. The side columns are fixedly connected to both ends of the support beam perpendicularly to it. The upper crossbeam is parallel to the support beam and connected to the other end of the side column. The back support is connected between the support beam and the upper crossbeam and is located on the side of the back plate away from the base plate. The negative copper busbar, positive copper busbar, AC A-phase copper busbar, AC B-phase copper busbar, and AC C-phase copper busbar are all connected to the back support through insulating supports. The negative copper busbar and positive copper busbar are connected in the lower half of the height direction of the back support, and the AC A-phase copper busbar, AC B-phase copper busbar, and AC C-phase copper busbar are connected in the upper half of the height direction of the back support. The negative copper busbar, positive copper busbar, AC A-phase copper busbar, AC B-phase copper busbar, and AC C-phase copper busbar are parallel to each other.

[0007] Furthermore, the frame consisting of the supporting beam, side columns, and upper crossbeam comprises two sets, both of which surround the outside of the base plate, and the two sets of frames are parallel to each other.

[0008] Furthermore, the back panel has a first cutout area for the power cord to pass through, and the front panel has a second cutout area for inserting the power module. The first cutout area and the second cutout area are collinear.

[0009] Furthermore, it also includes a blind plate to cover the second cutout area.

[0010] Furthermore, the back plate has multiple first hollow areas, the front panel has the same number of second hollow areas, and the working surface of the base plate is provided with a group of bosses, the bosses in the group of bosses are collinear and located between each of the first hollow areas or each of the second hollow areas.

[0011] Furthermore, the boss is a bridge-shaped boss.

[0012] Furthermore, it also includes reinforcing plates, the number of which is the same as the number of boss groups, and is installed between the bottom plate and the back plate at the corresponding positions of the boss groups.

[0013] Furthermore, the reinforcing plate is a triangular reinforcing plate, with its two right-angled sides fixedly connected to the base plate and the back plate, respectively.

[0014] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0015] The DC charging pile charging conversion device provided by this utility model can provide three-phase AC power to multiple power modules by setting a three-phase AC copper busbar input at the upper back and setting positive and negative DC copper busbar output at the lower back, so that the DC power output from one or more power modules can be transferred to a copper busbar, and then the power line is led from the copper busbar to the DC charging gun. The copper busbars are fixed together by insulating brackets. The device has a clear structure, beautiful and neat wiring layout, greatly reducing production and manufacturing costs and improving assembly efficiency. Attached Figure Description

[0016] Figure 1 This is a front view structural schematic diagram of the DC charging pile charging conversion device provided in this embodiment of the utility model;

[0017] Figure 2 This is a side view of the assembly of the DC charging pile charging conversion device provided in this embodiment of the utility model;

[0018] Figure 3 This is a front-view diagram of the DC charging pile charging conversion device provided in this embodiment of the utility model.

[0019] Figure 4 This is a top view of the rear structure of the DC charging pile charging conversion device provided in this embodiment of the utility model;

[0020] Figure 5 This is a schematic diagram of the DC charging pile charging conversion device provided in this embodiment of the utility model without a power supply module;

[0021] Figure 6 This is a top view of the base plate, back plate, and reinforcing plate provided in an embodiment of the present utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the boss on the base plate provided in an embodiment of the present invention;

[0023] Figure 8 This is a schematic diagram of the structure of the reinforcing plate provided in this embodiment of the utility model;

[0024] Figure 9 This is a schematic diagram of the power module plug provided in an embodiment of the present invention;

[0025] Figure 10 This is a schematic diagram of the power module socket provided in an embodiment of the present utility model;

[0026] Figure 11 This is a schematic diagram of the power cord connection of the DC charging pile charging conversion device provided in this embodiment of the utility model;

[0027] Figure 12 This is a schematic diagram of the right side view of the DC charging pile charging conversion device provided in this embodiment of the utility model;

[0028] Figure 13 This is a schematic diagram of the left side of the DC charging pile charging conversion device provided in this embodiment of the utility model;

[0029] Figure 14 This is a rear view structural schematic diagram of the DC charging pile charging conversion device provided in this embodiment of the utility model;

[0030] Figure 15 This is a top view of the DC charging pile charging conversion device provided in this embodiment of the utility model.

[0031] In the diagram: 001, boss; 002, slot; 003, boss; 10, DC charging pile charging conversion device; 100, base plate; 101, rear support beam; 102, front support beam; 103, rear column; 104, front column; 105, panel; 106, blind plate; 107, power module; 108, upper crossbeam; 110, left bracket; 111, small insulating bracket; 112, negative copper busbar; 113, positive copper busbar; 114, large insulating bracket; 115, middle bracket; 116, right bracket; 117, AC C-phase copper busbar; 118, AC B-phase copper busbar; 119, AC A-phase copper busbar; 120, reinforcing plate; 121, power module plug; 122, power module socket; 123, AC power cord; 124, DC positive power cord; 125, DC negative power cord; 20, DC charging pile. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0033] This embodiment provides a DC charging pile charging conversion device 10, including: a base plate 100, a panel 105, a back plate, a support beam, an upper crossbeam 108, a side column, a back support, an insulating support, a negative copper busbar 112, a positive copper busbar 113, an AC A-phase copper busbar 119, an AC B-phase copper busbar 118, and an AC C-phase copper busbar 117.

[0034] like Figure 3As shown, the back panel and front panel 105 are fixedly connected to both sides of the base plate 100 perpendicular to it. The support beams include a rear support beam 101 and a front support beam 102, both fixedly connected to the bottom surface of the base plate. The side columns include a rear column 103 and a front column 104, respectively fixedly connected to the two ends of the corresponding support beams perpendicular to them. The upper crossbeam 108 is parallel to the support beams and connected to the other end of the corresponding side column, comprising two upper crossbeams 108. The back support includes a left support 110, a middle support 115, and a right support 116, respectively connected between the rear support beam 101 and the upper crossbeam 108, and evenly distributed between the rear support beam 101 and the upper crossbeam 108. The left support 110 and the right support 115... 6. Other connection methods are also possible. In this embodiment, the left support 110 and the right support 116 are respectively connected to the rear columns 103 on both sides. The negative copper busbar 112, positive copper busbar 113, AC A-phase copper busbar 119, AC B-phase copper busbar 118, and AC C-phase copper busbar 117 are all connected to the back support through insulating supports. The negative copper busbar 112, positive copper busbar 113, AC A-phase copper busbar 119, AC B-phase copper busbar 118, and AC C-phase copper busbar 117 are parallel to each other in pairs. The negative copper busbar 112 and positive copper busbar 113 are located in the lower half of the region, and the AC A-phase copper busbar 119, AC B-phase copper busbar 118, and AC C-phase copper busbar 117 are located in the upper half of the region.

[0035] In this embodiment, the insulating support includes two small insulating supports 111 and a large insulating support 114. The two small insulating supports 111 are fixed on the left support 110 and the right support 116 respectively, and the large insulating support 114 is fixed on the middle support 115.

[0036] like Figure 6 As shown, the front end of the base plate 100 is provided with a downward bending edge, and the side is provided with an upward bending edge. The back plate is integrally formed with the base plate 100, and the upper end of the back plate is provided with a backward bending edge. A triangular reinforcing edge is provided between the base plate 100 and the back plate.

[0037] like Figure 5 The back panel shown has a first cutout area for the power cord to pass through, and the front panel has a second cutout area for inserting the power module. The first cutout area and the second cutout area are collinear. In this embodiment, the back panel has heat dissipation holes and fixing holes for fixing the plug of the power module 107 at the rear of the power module 107, as shown in the figure. Figure 7 As shown; the panel 105 has a slot for inserting the power module 107.

[0038] In this embodiment, a reinforcing plate 120 is also included. The reinforcing plate 120 has a triangular structure with protruding edges 003 on its bottom and right side. The upper surface of the base plate 100 is stamped with five rows of regularly arranged bridge-shaped protrusions 001, which serve as limiting guides for inserting the power module 107. Furthermore, rectangular slots 002 are formed in the base plate 100 and the back plate at the locations corresponding to the bridge-shaped protrusions 001, for mounting the reinforcing plate 120 in conjunction with the protruding edges 003. Specifically, as shown... Figure 6 Figure 7 and Figure 8 As shown.

[0039] During installation, first insert the boss 003 in the reinforcing plate 120 into the rectangular slot 002 in the base plate 100 and the back plate, and then weld the overlapping seam of the reinforcing plate 120 with the base plate 100 and the back plate firmly.

[0040] The method for installing the DC charging conversion device 10 provided in this embodiment into the DC charging pile 20 includes the following steps, and the installation effect is as follows: Figure 2 As shown:

[0041] The front column 104 and rear column 103 in the charging conversion device are respectively located on the crossbeams on the left and right sides inside the DC charging pile 20, as shown below. Figure 1 and Figures 12-15 As shown;

[0042] Next, fix the rear support beam 101 at both ends and the lower back holes of the rear columns 103 on both sides, fix the front support beam 102 at both ends and the lower front holes of the front columns 104 on both sides, and similarly fix the upper crossbeam 108 to the upper holes of the front columns 104 and the rear columns 103 on both sides respectively.

[0043] Place the connected base plate and back plate on top of the front support beam 102 and the rear support beam 101, and fix them together with screws. Figure 3 Figure 4 and Figure 5 As shown.

[0044] The left bracket 110 and right bracket 116 are respectively fixed to the rear columns 103 on the left and right sides of the back of the charging converter. The middle bracket 115 is fixed in the middle position between the upper crossbeam 108 and the rear support beam 101 at the rear of the charging converter. Figure 4 As shown;

[0045] Next, fix the small insulating bracket 111 to the left bracket 110 on the left side and the right bracket 116 on the right side respectively. Fix the large insulating bracket 114 to the middle bracket 115 in the middle. Then fix the AC C-phase copper busbar 117, AC B-phase copper busbar 118 and AC A-phase copper busbar 119 to the upper small insulating bracket 111. Continue to fix the negative copper busbar 112 and positive copper busbar 113 to the lower small insulating bracket 111 and the large insulating bracket 114 as shown in the figure.

[0046] Next, connect the power cords. First, connect the AC power cord 123. In this embodiment, the AC power cord 123 includes three colored cords: yellow, red, and green. These cords are used to connect the AC A-phase copper busbar 119, AC B-phase copper busbar 118, and AC C-phase copper busbar 117 to the power module socket 122. Cut an appropriate length of yellow power cord, crimp one end to an SC-type copper lug, and crimp the other end to a tubular copper lug. Use a combination screw M6*20 to pass through the hole in the SC-type copper lug and the hole in the AC A-phase copper busbar 119. Tighten the AC A-phase copper busbar 119 with a flange nut M6 and the combination screw M6*20. Insert the other end of the crimped tubular copper lug directly into the A-phase socket of the power module socket 122 of the power module 107. Similarly, connect the green power cord to the AC B-phase copper busbar 118 and the B-phase socket of the power module socket 122, and connect the red power cord to the AC C-phase copper busbar 117 and the C-phase socket of the power module socket 122, thus completing the connection of the AC power cord 123.

[0047] Next, connect the DC power cord. Cut a brown DC positive power cord 124 to an appropriate length, crimp an SC copper lug to one end, and crimp a tubular copper lug to the other end. Tighten the crimped SC copper lug end to the DC positive copper busbar 113 with combination screws and flange nuts. Insert the other end directly into the DC output socket hole of the power module 107 for positive connection. Similarly, use the blue DC negative power cord 125, crimp a copper lug, fix one end to the negative copper busbar 112, and connect the other end to the negative terminal of the DC output socket hole of the power module 107. Figure 4 As shown, the copper busbar assembly on the back of the charging converter is now complete.

[0048] Switch to the front of the charging conversion device, fix the left and right sides of the panel 105 to the left and right front columns 104, and fix the lower part of the panel 105 to the front side of the charging conversion device base plate 100.

[0049] Insert the power module 107 into the corresponding guide slot, such as Figure 11 As shown, connect the power module plug 121 to the power module socket 122, as shown in the diagram. Figure 9 As shown, the power module socket 122 is as follows Figure 10As shown, a blind plate 106 can also be used to fix the device at a location without a power module 107, as needed, to prevent the loss of cold air. Figure 4 As shown, the charging conversion device is now assembled.

[0050] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indication will also change accordingly. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0051] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0052] The embodiments of the present utility model have been described above with reference to the accompanying drawings. However, the present utility model is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present utility model without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present utility model.

Claims

1. A DC charging pile charging conversion device, characterized in that, include: Base plate, front plate, back plate, support beam, upper crossbeam, side column, back bracket, insulating bracket, negative copper busbar, positive copper busbar, AC A phase copper busbar, AC B phase copper busbar and AC C phase copper busbar; The back plate and front plate are fixedly connected to the two sides of the base plate perpendicularly to it. The support beam is fixedly connected to the bottom surface of the base plate. The side columns are fixedly connected to both ends of the support beam perpendicularly to it. The upper crossbeam is parallel to the support beam and connected to the other end of the side column. The back support is connected between the support beam and the upper crossbeam and is located on the side of the back plate away from the base plate. The negative copper busbar, positive copper busbar, AC A-phase copper busbar, AC B-phase copper busbar, and AC C-phase copper busbar are all connected to the back support through insulating supports. The negative copper busbar and positive copper busbar are connected in the lower half of the height direction of the back support, and the AC A-phase copper busbar, AC B-phase copper busbar, and AC C-phase copper busbar are connected in the upper half of the height direction of the back support. The negative copper busbar, positive copper busbar, AC A-phase copper busbar, AC B-phase copper busbar, and AC C-phase copper busbar are parallel to each other.

2. The DC charging pile charging conversion device according to claim 1, characterized in that: The frame consisting of the supporting beam, side columns, and upper crossbeam comprises two sets, both of which surround the outside of the base plate, and the two sets of frames are parallel to each other.

3. The DC charging pile charging conversion device according to claim 1, characterized in that: The back panel has a first cutout area for the power cord to pass through, and the front panel has a second cutout area for inserting the power module. The first cutout area and the second cutout area are collinear.

4. The DC charging pile charging conversion device according to claim 3, characterized in that: It also includes a blind plate to cover the second cutout area.

5. The DC charging pile charging conversion device according to claim 1, characterized in that: The back plate has multiple first hollow areas, the front panel has the same number of second hollow areas, and the working surface of the base plate is provided with a group of bosses. The bosses in the group of bosses are collinear and located between each of the first hollow areas or each of the second hollow areas.

6. The DC charging pile charging conversion device according to claim 5, characterized in that: The boss is a bridge-shaped boss.

7. The DC charging pile charging conversion device according to claim 6, characterized in that: It also includes reinforcing plates, the number of which is the same as the number of boss groups, and is installed between the bottom plate and the back plate at the corresponding positions of the boss groups.

8. The DC charging pile charging conversion device according to claim 7, characterized in that: The reinforcing plate is a triangular reinforcing plate, with its two right-angled sides fixedly connected to the base plate and the back plate, respectively.

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