Energy storage converter

Abstract

The utility model provides an energy storage converter. The energy storage converter comprises a housing; the connector is arranged on the machine shell; the magnetic ring is distributed around the connector; the conductive frame is arranged in the machine shell, is used for fixing the magnetic ring and is connected to the machine shell, so that the conductive frame is grounded; the anti-electromagnetic interference plate is arranged in the machine shell and located on one side of the conductive frame, and the anti-electromagnetic interference plate is connected to the connector; the anti-electromagnetic interference plate and the conductive frame are connected to the grounding piece, so that the anti-electromagnetic interference plate is grounded. The anti-electromagnetic interference plate is located on one side of the conductive frame, and the anti-electromagnetic interference plate is connected to the conductive frame through the grounding piece to be grounded, so that the grounding path of the anti-electromagnetic interference plate is shortened, and a better grounding effect is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage power conversion, and particularly relates to an energy storage power converter. Background Art

[0002] A power conversion system (PCS) is the core device of an energy storage system, which is used to realize the AC-DC conversion between the energy storage battery and the power grid and complete the two-way energy flow between them.

[0003] In related technologies, an energy storage power converter usually includes an AC connector (also known as an AC port), an output board, a lightning protection module, an electromagnetic interference prevention board (also known as an EMI board), and a common mode inductor. Among them, the AC connector is used to connect to three-phase electricity, and the AC connector and the output board are respectively arranged in different housings. The AC connector is connected to the common mode inductor, the common mode inductor is connected to the output board, and the lightning protection module is arranged on the output board. The electromagnetic interference prevention board is grounded, and the electromagnetic interference prevention board is electrically connected to the AC connector, and the electromagnetic interference prevention board filters the three-phase electricity. However, the grounding path of the electromagnetic interference prevention board in the above technology is relatively long, which affects the grounding effect of the electromagnetic interference board. Summary of the Utility Model

[0004] In view of the above, it is necessary to provide an energy storage power converter to solve the above defects.

[0005] The present application provides an energy storage power converter, including: a housing; a connector arranged in the housing; a magnetic ring distributed around the connector; a conductive frame arranged in the housing, the conductive frame is used to fix the magnetic ring, and the conductive frame is connected to the housing so that the conductive frame is grounded; an electromagnetic interference prevention board arranged in the housing and located on one side of the conductive frame, the electromagnetic interference prevention board is connected to the connector; a grounding member, the electromagnetic interference prevention board and the conductive frame are respectively connected to the grounding member so that the electromagnetic interference prevention board is grounded.

[0006] In some embodiments, the grounding member is a conductive elastic sheet, one end of the conductive elastic sheet is connected to the electromagnetic interference prevention board, and the other end of the conductive elastic sheet is connected to the conductive frame.

[0007] In some embodiments, the energy storage power converter further includes a lightning protection module, and the lightning protection module is arranged on the electromagnetic interference prevention board.

[0008] In some embodiments, the energy storage power converter further includes a copper bar, the copper bar has a first section, a middle section and a second section, the middle section is located between the first section and the second section, and there is an included angle between the first section, the second section and the middle section respectively; the connector and the electromagnetic interference prevention board are connected to the first section, and the second section is connected to the housing.

[0009] In some embodiments, the energy storage converter further includes a fuse and a common mode inductor. The fuse is connected to the second segment and is also connected to the common mode inductor. The common mode inductor is used to connect to the output board.

[0010] In some embodiments, a spacing is provided between the electromagnetic interference prevention board and the chassis to form an installation space, and the fuse is disposed in the installation space.

[0011] In some embodiments, the energy storage converter further includes a support rod. The support rod and the copper busbar are distributed on both sides of the electromagnetic interference prevention board. One end of the support rod is connected to the chassis, and the other end of the support rod is connected to the electromagnetic interference prevention board.

[0012] In some embodiments, the energy storage converter further includes a shielding cover that covers the electromagnetic interference prevention board and the fuse.

[0013] In some embodiments, the conductive frame is provided with an installation groove for receiving a magnetic ring. The conductive frame is fixedly connected to the side wall of the chassis, and the notch of the installation groove faces the side wall of the chassis. A buffer pad for pressing the magnetic ring is disposed in the installation groove.

[0014] In some embodiments, there are multiple buffer pads. The multiple buffer pads include a first buffer pad and a second buffer pad, and the first buffer pad and the second buffer pad press the magnetic ring in different directions respectively.

[0015] Through the energy storage converter provided by the present application, the electromagnetic interference prevention board is located on one side of the conductive frame, and the electromagnetic interference prevention board is grounded by a grounding member connected to the conductive frame, shortening the grounding path of the electromagnetic interference prevention board and achieving a better grounding effect. Moreover, the position of the conductive frame is close to the position of the connector, so that the electromagnetic interference prevention board is located near the connector, facilitating the connection of the electromagnetic interference prevention board to multiple connectors simultaneously to support filtering of multiple phases of U, V, W, and N phases, and shortening the port filtering loop to achieve a better filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. 1 is a first schematic structural diagram of the energy storage converter according to an embodiment of the present application, in which a shielding cover is installed on the chassis.

[0017] Figure 2 FIG. 2 is a second schematic structural diagram of the energy storage converter according to an embodiment of the present application, in which the shielding cover is not installed on the chassis.

[0018] Figure 3 FIG. 3 is a schematic structural diagram of the electromagnetic interference prevention board according to an embodiment of the present application.

[0019] Figure 4 FIG. 4 is a schematic structural diagram of the chassis, connector, conductive frame, magnetic ring, and common mode inductor according to an embodiment of the present application.

[0020] Figure 5Schematic diagram of the structure of the conductive frame according to an embodiment of the present application.

[0021] Figure 6 Schematic diagram of the connection relationship among the connector, electromagnetic interference prevention board, copper bar, fuse, first insulating column, and second insulating column according to an embodiment of the present application.

[0022] Figure 7 Schematic diagram of the connection relationship among the grounding part, electromagnetic interference prevention board, and conductive frame according to an embodiment of the present application.

[0023] Figure 8 Schematic diagram of the structure of the copper bar, fuse, first insulating column, and second insulating column according to an embodiment of the present application.

[0024] Description of main component symbols

[0025] Chassis 10

[0026] Receiving groove 11

[0027] Support rod 12

[0028] Sleeve 13

[0029] First insulating column 14

[0030] Second insulating column 15

[0031] Connector 20

[0032] Connection terminal 21

[0033] Connection hole 22

[0034] Magnetic ring 30

[0035] Conductive frame 40

[0036] Grounding part 41

[0037] Installation groove 42

[0038] Buffer pad 43

[0039] First buffer pad 431

[0040] Second buffer pad 432

[0041] Main body part 44

[0042] Enclosure part 45

[0043] Docking hole 46

[0044] Electromagnetic interference prevention board 50

[0045] Lightning protection module 51

[0046] X capacitor 52

[0047] Y - capacitor 53

[0048] First mounting hole 54

[0049] Mounting space 55

[0050] Second mounting hole 56

[0051] Fuse 60

[0052] First conductive sheet 61

[0053] Second conductive sheet 62

[0054] Common - mode inductor 70

[0055] Shielding cover 80

[0056] Copper busbar 90

[0057] First section 91

[0058] First fixing hole 911

[0059] Second fixing hole 912

[0060] Middle section 92

[0061] Second section 93 Specific embodiments

[0062] Next, in combination with the drawings in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments.

[0063] In the description of the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly speaking, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0064] In addition, the direction descriptions mentioned below are all based on the directions shown in the drawings attached to the specification. For example, the X - axis direction shown in the drawings indicates the first direction, the Y - axis direction shown in the drawings indicates the second direction, and the Z - axis direction shown in the drawings indicates the third direction, aiming to describe the present solution more clearly, rather than limiting the specific direction of the product in use.

[0065] In the related art, an energy storage converter generally includes an AC connector, an output board, a lightning protection module, an electromagnetic interference prevention board, a fuse, and a common mode inductor. Among them, the AC connector is used to connect to three-phase power, and the AC connector and the output board are respectively arranged in different housings. The AC connector is connected to the common mode inductor through a fuse, the common mode inductor is connected to the output board, and the lightning protection module is arranged on the output board. The electromagnetic interference prevention board is grounded, and the electromagnetic interference prevention board is electrically connected to the AC connector.

[0066] However, the distance between the electromagnetic interference prevention board and the AC connector in the above technology is relatively far. The grounding method of the electromagnetic interference prevention board is: through a cable transfer between the electromagnetic interference prevention board and the housing, but this will result in a relatively long grounding path of the electromagnetic interference prevention board, affecting the grounding effect of the electromagnetic interference board. Another grounding method of the electromagnetic interference prevention board is: adding a plurality of metal support columns between the electromagnetic interference prevention board and the housing for connection, but this will cause an increase in the stress borne by the electromagnetic interference prevention board, affecting the working stability of the electromagnetic interference prevention board.

[0067] On the other hand, since the lightning protection module is placed on the output board and the distance between the lightning protection module and the AC connector is relatively far, the loop between the lightning protection module and the AC connector is relatively long, making it difficult to achieve a good lightning protection effect.

[0068] Therefore, the present application first provides an energy storage converter, which has the technical effects of good grounding effect, strong working stability, and better lightning protection effect.

[0069] Please refer to Figure 1 and Figure 2 , the energy storage converter includes a housing 10, a connector 20, a magnetic ring 30, a conductive frame 40, an electromagnetic interference prevention board 50, a grounding member 41, and an output board (not shown in the figure). Among them, the housing 10 is made of a conductive material, and electronic components can be grounded by connecting to the housing 10.

[0070] The connector 20 is arranged on the housing 10, and the connector 20 is used to connect to three-phase power. Among them, the number of connectors 20 is 4, and the four connectors 20 are respectively arranged corresponding to the U, V, W, and N phases. The magnetic ring 30 is arranged in the housing 10, and the magnetic ring 30 is distributed around the connector 20. The magnetic ring 30 can play a role in high-frequency filtering.

[0071] The conductive frame 40 is arranged in the housing 10, and the conductive frame 40 is used to fix the magnetic ring 30 to make the magnetic ring 30 and the connector 20 relatively fixed. The conductive frame 40 is connected to the housing 10 to make the conductive frame 40 grounded.

[0072] The electromagnetic interference prevention board 50 is arranged inside the casing 10, and the electromagnetic interference prevention board 50 is located on one side of the conductive frame 40. The electromagnetic interference prevention board 50 is connected to the connector 20. The electromagnetic interference prevention board 50 and the conductive frame 40 are respectively connected to the grounding member 41 so that the electromagnetic interference prevention board 50 is grounded.

[0073] Through the energy storage converter provided by the present application, the electromagnetic interference prevention board 50 is located on one side of the conductive frame 40, and the electromagnetic interference prevention board 50 is grounded by being connected to the conductive frame 40 through the grounding member 41, shortening the grounding path of the electromagnetic interference prevention board 50 and achieving a better grounding effect.

[0074] Moreover, the position of the conductive frame 40 is close to the position of the connector 20 so that the electromagnetic interference prevention board 50 is located near the connector 20, facilitating the connection of the electromagnetic interference prevention board 50 to multiple connectors 20 simultaneously to support the filtering of multiple phases of U, V, W, and N phases and shortening the port filtering loop to achieve a better filtering effect.

[0075] Please refer to Figure 2 and Figure 3 In this embodiment, the energy storage converter further includes a lightning protection module 51, and the lightning protection module 51 is arranged on the electromagnetic interference prevention board 50.

[0076] It can be understood that the position of the lightning protection module 51 is close to the connector 20, shortening the loop between the lightning protection module 51 and the connector 20. When being struck by lightning, the lightning strike current can be discharged through a shorter loop, thereby protecting the safety of the internal components of the machine to a greater extent.

[0077] In this embodiment, the energy storage converter further includes a fuse 60 and a common mode inductor 70. Among them, the quantity and distribution of the fuses 60 correspond to the quantity and distribution of the connectors 20. Multiple fuses 60 are respectively connected to the corresponding connectors 20, and multiple fuses 60 are respectively connected to the common mode inductor 70. The common mode inductor 70 is used to connect to the output board. Among them, the fuse 60 is located at one end of the connector 20 close to the electromagnetic interference prevention board 50, and the fuse 60 is arranged between the electromagnetic interference prevention board 50 and the inner wall of the casing 10.

[0078] In this way, the positional distribution among the connector 20, the fuse 60, and the electromagnetic interference prevention board 50 is more compact, improving the space utilization rate. At the same time, the occupation of the internal space of the casing 10 is reduced. On the premise of ensuring meeting the requirements, the designed product has a smaller size and a more cost - effective advantage.

[0079] Please refer to Figure 1 and Figure 2, in this embodiment, the energy storage converter further includes a shielding cover 80. The shielding cover 80 is connected to the housing 10, and the shielding cover 80 covers the electromagnetic interference prevention plate 50 and the fuse 60, playing a role in reducing external electromagnetic interference. Exemplarily, the shielding cover 80 is bolted and fixed to the housing 10, and the cover opening of the shielding cover 80 is set according to the distribution positions of the conductive frame 40, the electromagnetic interference prevention plate 50, and the fuse 60. Since the distribution positions of the fuse 60 and the electromagnetic interference prevention plate 50 in this embodiment are relatively close, the requirement for the overall volume of the shielding cover 80 is small, so as to reduce the design size and occupied space of the shielding cover 80.

[0080] Please refer to Figure 2 and Figure 4 , in some embodiments, the housing 10 is provided with a receiving groove 11. The receiving groove 11 penetrates through one side of the housing 10 to form a groove opening, and the housing 10 can cooperate with a housing cover (not shown in the figure) to block the groove opening of the receiving groove 11. The groove wall of the receiving groove 11 forms the side wall inside the housing 10, and the groove bottom of the receiving groove 11 forms the bottom wall inside the housing 10. Exemplarily, the housing 10 is integrally rectangular, and the housing 10 can be integrally formed by bending a metal plate to reduce processing costs.

[0081] In some embodiments, the connector 20 is embedded and installed on one side of the housing 10. One end of the connector 20 is located inside the housing 10 and is provided with a connection terminal 21. The connection terminal 21 is used to connect with the electromagnetic interference prevention plate 50, and the other end of the connector 20 is exposed outside the housing 10 and is used to connect with an external power supply.

[0082] Exemplarily, there are four connectors 20, and the four connectors 20 are spaced apart along the first direction (i.e., the X-axis direction in the figure). The first direction is parallel to the bottom wall of the connector 20. The connection terminal 21 is integrally strip-shaped, and the connection terminal 21 extends along the second direction (i.e., the Y-axis direction in the figure). The second direction is parallel to the bottom wall of the connector 20, and the first direction is perpendicular to the second direction. A connection hole 22 is provided at the end of the connection terminal 21. The connection terminal 21 can be fixed in cooperation with other structures through the connection hole 22, and the connection terminal 21 can be electrically connected to other components by contact.

[0083] In some embodiments, the magnetic ring 30 is located on the side of the housing 10 where the connector 20 is provided. The shape of the magnetic ring 30 corresponds to the distribution of the connector 20. The connection terminal 21 of the connector 20 passes through the inner ring of the magnetic ring 30, and there is a spacing between the inner side of the magnetic ring 30 and the connector 20. Exemplarily, the magnetic ring 30 is integrally waist-shaped, and the length direction of the magnetic ring 30 corresponds to the first direction.

[0084] Please refer to Figure 4 and Figure 5, in some embodiments, the conductive frame 40 is fixedly connected to one side of the housing 10 where the magnetic ring 30 is provided. The conductive frame 40 is provided with a mounting groove 42, and the notch of the mounting groove 42 faces the side wall of the housing 10. The magnetic ring 30 is received in the mounting groove 42. In this way, the conductive frame 40 is fixed to the side wall of the housing 10, and the housing 10 seals the notch of the mounting groove 42 so that the magnetic ring 30 is fixed to the side wall of the housing 10.

[0085] In some embodiments, the internal dimension of the mounting groove 42 is larger than the dimension of the magnetic ring 30. When the magnetic ring 30 is received in the mounting groove 42, there is a gap between the inner wall of the mounting groove 42 and at least one side of the magnetic ring 30. In this way, the risk that the magnetic ring 30 cannot be installed into the conductive frame 40 due to large tolerances can be prevented.

[0086] In some embodiments, a buffer pad 43 is provided in the mounting groove 42. The buffer pad 43 is adhesively fixed to the conductive frame 40 and is used to press against the magnetic ring 30. The buffer pad 43 plays a role of buffering and protecting the magnetic ring 30 to prevent the magnetic ring 30 from being damaged during the handling, collision, dropping, etc. of the housing 10.

[0087] Exemplarily, the conductive frame 40 includes a main body portion 44 and a surrounding portion 45. The main body portion 44 is arranged corresponding to the shape of the magnetic ring 30. The surrounding portion 45 is arranged along the circumference of the main body portion 44. There is an included angle between the surrounding portion 45 and the main body portion 44. An installation groove 42 is formed by enclosing between the main body portion 44 and the surrounding portion 45. The surrounding portion 45 is fixedly connected to the side wall of the housing 10.

[0088] There are a plurality of surrounding portions 45, and the plurality of surrounding portions 45 are spaced apart along the circumference of the main body portion 44. The surrounding portion 45 and the main body portion 44 can be integrally formed by bending a metal plate to reduce the processing cost.

[0089] The side of the surrounding portion 45 away from the main body portion 44 is fixedly connected to the side wall of the housing 10 by screws. It can be understood that the fixing manner between the conductive frame 40 and the housing 10 is a detachable connection, which is convenient for the user to subsequently disassemble the conductive frame 40 or the magnetic ring 30 for inspection and repair.

[0090] In some embodiments, the buffer pad 43 includes a first buffer pad 431 and a second buffer pad 432, and the first buffer pad 431 and the second buffer pad 432 are respectively used to press against the magnetic ring 30 in different directions.

[0091] Exemplarily, the first buffer pad 431 is disposed on the surrounding portion 45, and the second buffer pad 432 is disposed on the main body portion 44. The surrounding portion 45 presses against the outer side of the magnetic ring 30 along the third direction (i.e., the Z-axis direction in the figure) through the first buffer pad 431. Herein, the third direction is perpendicular to the second direction and perpendicular to the bottom wall of the casing 10. The main body portion 44 presses against the outer side of the magnetic ring 30 along the second direction through the second buffer pad 432. Thus, the overall conductive frame 40 and the casing 10 can cooperate to squeeze and fix the magnetic ring 30 from multiple directions, improving the support and fixing effect and the buffering effect.

[0092] Please refer to Figure 2 and Figure 3 , in some embodiments, the electromagnetic interference prevention plate 50 is provided with a plurality of electronic components. The plurality of electronic components include a lightning protection module 51, an X capacitor 52, and a Y capacitor 53. Herein, the X capacitor 52 is connected between the U, V, and W phase lines and the N phase line to play a role in power filtering, and the Y capacitor 53 is connected between the phase line and the ground wire to play a role in eliminating common mode interference.

[0093] In some embodiments, the electromagnetic interference prevention plate 50 is disposed parallel to the first direction, and the position of the electromagnetic interference prevention plate 50 corresponds to the position distribution of the connector 20. The electromagnetic interference prevention plate 50 is fixedly connected to the connector 20 and is electrically connected to the connector 20. The connector 20 has a supporting effect on the electromagnetic interference prevention plate 50.

[0094] A plurality of first mounting holes 54 are provided on the side of the electromagnetic interference prevention plate 50 close to the connector 20. The plurality of first mounting holes 54 are spaced apart along the first direction. The electromagnetic interference prevention plate 50 can be fixed in cooperation with other structures through the first mounting holes 54. Moreover, the electromagnetic interference prevention plate 50 is provided with electrical connection structures such as pads at positions corresponding to the first mounting holes 54 for other components to contact for electrical connection.

[0095] In some embodiments, a gap is left between the electromagnetic interference prevention plate 50 and the bottom wall of the casing 10 to form an installation space 55, and the fuse 60 is disposed in the installation space 55. It can be understood that the position of the electromagnetic interference prevention plate 50 corresponds to the position of the connector 20, and an installation space 55 for accommodating the fuse 60 is left on one side of the electromagnetic interference prevention plate 50, facilitating the fuse 60 to be disposed near the connector 20.

[0096] Please refer to Figure 2 and Figure 6In some embodiments, the energy storage converter further includes a copper bar 90, which is connected to the connector 20 and fixed to the housing 10, and the anti-electromagnetic interference board 50 is connected to the copper bar 90. The number of copper bars 90 is consistent with the number of connectors 20, and multiple copper bars 90 are distributed corresponding to multiple connectors 20. In this way, the anti-electromagnetic interference board 50 and multiple connectors 20 can be electrically connected through multiple copper bars 90, and the anti-electromagnetic interference board 50 is fixed to the housing 10 and multiple connectors 20 through multiple copper bars 90, so that the copper bar 90 has a supporting effect on the anti-electromagnetic interference board 50, and shares the stress of the anti-electromagnetic interference board 50 on the connector 20.

[0097] Wherein, the copper busbar 90 has a first section 91, a middle section 92 and a second section 93, the middle section 92 is located between the first section 91 and the second section 93, and the first section 91 and the second section 93 respectively have an angle with the middle section 92. The first section 91 is used to connect the connector 20 and the anti-electromagnetic interference board 50, and the second section 93 is used to connect the fuse 60.

[0098] Exemplarily, the first section 91 is arranged along the extension direction of the connection terminal 21, the first section 91 and the second section 93 are parallel to the second direction, and the middle section 92 is parallel to the third direction. The copper bar 90 is integrally formed, and the whole plate itself has a certain hardness. The first section 91 and the second section 93 of the copper bar 90 can be formed by bending process.

[0099] The first section 91 is provided with a first fixing hole 911 and a second fixing hole 912, wherein the first fixing hole 911 is provided corresponding to the connection hole 22, and the second fixing hole 912 is provided corresponding to the first mounting hole 54. The first section 91 is provided on the side of the connection terminal 21 away from the bottom wall of the housing 10, and the first fixing hole 911 of the first section 91 and the first mounting hole 54 of the connection terminal 21 are connected by screws, so that the first section 91 and the connection terminal 21 are installed, fixed and electrically connected. The anti-electromagnetic interference board 50 is provided on the side of the first section 91 away from the connection terminal 21, and the first mounting hole 54 of the anti-electromagnetic interference board 50 and the second fixing hole 912 of the first section 91 are connected by screws, so that the anti-electromagnetic interference board 50 and the first section 91 are installed, fixed and electrically connected. The second section 93 is fixedly connected to the housing 10 to support the first section 91.

[0100] In this way, the copper busbar 90 can enhance the connection stability between the connector 20 and the anti-electromagnetic interference board 50 on the basis of improving the installation stability of the anti-electromagnetic interference board 50, and at the same time play a supporting and protective role for the connector 20.

[0101] Please refer to Figure 2 、 Figure 5 and Figure 7, in some embodiments, the grounding member 41 is a conductive elastic sheet. One end of the conductive elastic sheet is connected to the electromagnetic interference prevention plate 50, and the other end of the conductive elastic sheet is connected to the conductive frame 40. It can be understood that the conductive elastic sheet itself has a certain deformation ability, which can compensate for the height difference between the electromagnetic interference prevention plate 50 and the conductive frame 40, and prevent the electromagnetic interference prevention plate 50 and the conductive frame 40 from not being connected due to tolerance problems.

[0102] Exemplarily, the conductive elastic sheet can be made of SUS301 stainless steel. The number of conductive elastic sheets ≥ 2, and multiple conductive elastic sheets are distributed at intervals along the first direction. A plurality of second mounting holes 56 are provided on the side of the electromagnetic interference prevention plate 50 close to the conductive frame 40, and the plurality of second mounting holes 56 are arranged corresponding to the plurality of conductive elastic sheets. Moreover, electrical connection structures such as pads are provided at the positions of the electromagnetic interference prevention plate 50 corresponding to the second mounting holes 56 for the conductive elastic sheets to contact for electrical connection. A plurality of docking holes 46 are provided on the main body portion 44 of the conductive frame 40, and the plurality of docking holes 46 are arranged corresponding to the plurality of conductive elastic sheets.

[0103] One end of the conductive elastic sheet is fixed to the corresponding second mounting hole 56 by a screw, and the other end of the conductive elastic sheet is fixed to the corresponding docking hole 46 by a screw, so that both ends of the conductive elastic sheet are fixed to the electromagnetic interference prevention plate 50 and the conductive frame 40 respectively, and the electromagnetic interference prevention plate 50 is electrically connected to the conductive frame 40 through the conductive elastic sheet.

[0104] It can be understood that on the basis of shortening the distance between the electromagnetic interference prevention plate 50 and the conductive frame 40 to shorten the grounding loop in the embodiments of the present application, the problem of tolerance installation is solved by setting the conductive elastic sheet. In other embodiments, the grounding member 41 can also be a lead wire, and the present application does not limit this.

[0105] Please refer to Figure 2 and Figure 4 , in some embodiments, the energy storage converter further includes a support rod 12. One end of the support rod 12 is connected to the machine shell 10, and the other end of the support rod 12 is connected to the electromagnetic interference prevention plate 50. Among them, the support rod 12 and the copper row 90 are distributed on both sides of the electromagnetic interference prevention plate 50. It can be understood that the support rod 12 can play a supporting role on the side of the electromagnetic interference prevention plate 50 away from the copper row 90, and the support rod 12 cooperates with the copper row 90 to perform multi-point support on the electromagnetic interference prevention plate 50, improving the stability of the electromagnetic interference prevention plate 50.

[0106] Exemplarily, the support rod 12 is detachably connected to the electromagnetic interference prevention plate 50, and the detachable connection methods include but are not limited to bolt connection, snap connection, etc. In this embodiment, bolt connection is taken as an example. It can be understood that both the support rod 12 and the copper row 90 are detachably connected to the electromagnetic interference prevention plate 50, which is convenient for users to disassemble the electromagnetic interference prevention plate 50 for inspection and maintenance later.

[0107] Specifically, the number of support rods 12 ≥ 2, and multiple support rods 12 are distributed at intervals. In the example of this embodiment, the number of support rods 12 is 2, and the two support rods 12 are diagonally distributed relative to the electromagnetic interference prevention plate 50, so that one support rod 12 is located on the side of the electromagnetic interference prevention plate 50 away from the copper row 90, and the other support rod 12 is located on the side of the electromagnetic interference prevention plate 50 close to the copper row 90. It should be noted that in other examples, the number and distribution of the support rods 12 can also be configured according to the shape of the electromagnetic interference prevention plate 50, and the present application does not limit this.

[0108] In some embodiments, the bottom wall of the casing 10 is provided with sleeves 13, and the number and distribution of the sleeves 13 correspond to the number and distribution of the support rods 12. The sleeves 13 are used to install the support rods 12. Exemplarily, the sleeves 13 are embedded and fixed in the casing 10, and the end of the support rod 12 away from the electromagnetic interference prevention plate 50 is inserted into the sleeve 13. In this way, when installing the support rod 12, the support rod 12 is directly inserted into the corresponding sleeve 13, and then one end of the support rod 12 is bolted and fixed to the electromagnetic interference prevention plate 50, which is convenient and fast and improves the installation efficiency.

[0109] Please refer to Figure 2 and Figure 8 In some embodiments, the casing 10 is provided with a first insulating column 14 and a second insulating column 15. The first insulating column 14 and the second insulating column 15 are both bolted and fixed to the bottom wall of the casing 10, and the first insulating column 14 and the second insulating column 15 are respectively located at both ends of the fuse 60. The first insulating column 14 and the second insulating column 15 are used to cooperate to support and fix the fuse 60, and to make the fuse 60 not directly contact the casing 10 to achieve an insulating effect.

[0110] Exemplarily, first conductive pieces 61 and second conductive pieces 62 are respectively arranged at both ends of the fuse 60. The first insulating column 14 is arranged corresponding to the first conductive piece 61, and the second insulating column 15 is arranged corresponding to the second conductive piece 62. Among them, the first conductive piece 61 and the second segment 93 are respectively fixed to the end of the first insulating column 14 away from the bottom wall of the casing 10 by screws, so that the fuse 60, the copper row 90 and the connector 20 are installed and fixed and electrically connected, and at the same time, the first conductive piece 61 is insulated from the casing 10.

[0111] The second conductive piece 62 is fixed to the end of the second insulating column 15 away from the bottom wall of the casing 10 by screws. The common mode inductor 70 is connected to the second conductive piece 62 through an OT terminal (round cold pressing terminal), so that the fuse 60 and the common mode inductor 70 are electrically connected, and at the same time, the second conductive piece 62 is insulated from the casing 10.

[0112] It can be understood that the fixing manner between the fuse 60, the first insulating column 14 and the second insulating column 15 is a detachable connection, which facilitates the user to disassemble the fuse 60 for inspection and repair later.

[0113] Please refer to Figure 2 , in some embodiments, the common mode inductor 70 is embedded and installed on the bottom wall of the housing 10, and the terminals of the common mode inductor 70 can pass through the housing 10 to connect to the output board located outside the housing 10.

[0114] A radiator (not shown in the figure) for dissipating heat from the common mode inductor 70 is provided on the outside of the housing 10. The radiator includes but is not limited to a fan, fins, etc., to improve the working stability of the common mode inductor 70.

[0115] Please refer to Figure 2 , Figure 4 and Figure 6 , and the installation method of the energy storage converter provided by the embodiments of the present application will be described below.

[0116] First, the connector 20, the common mode inductor 70, the magnetic ring 30 and the conductive frame 40 are installed and fixed on the housing 10.

[0117] Then, place the fuse 60 on the first insulating column 14 and the second insulating column 15, place the copper bar 90 between the connector 20 and the first insulating column 14, connect and fix the fuse 60, the first insulating column 14, the second insulating column 15, the copper bar 90 and the connector 20, and connect the common mode inductor 70 and the second insulating column 15 through OT terminals.

[0118] Then, fix the support rod 12 to the sleeve 13, fix the electromagnetic interference prevention plate 50 to the support rod 12 and the copper bar 90, and then fix the two ends of the grounding part 41 to the electromagnetic interference prevention plate 50 and the conductive frame 40 respectively.

[0119] The above installation method is simple and fast, improving the installation efficiency and production efficiency of the energy storage converter.

[0120] For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the above embodiments of the present application should be regarded as exemplary and non-limiting. The scope of the present application is defined by the appended claims rather than the above description. Therefore, it is intended to cover all changes falling within the meaning and scope of the equivalent elements of the claims in the present application.

Claims

1. An energy storage converter, characterized in that: include: chassis; A connector, disposed on the housing; A magnetic ring, distributed around the connector; A conductive frame is arranged in the housing, the conductive frame is used to fix the magnetic ring, and the conductive frame is connected to the housing so that the conductive frame is grounded; An anti-electromagnetic interference board is arranged in the housing and located on one side of the conductive frame, and the anti-electromagnetic interference board is connected to the connector; A grounding piece, the anti-electromagnetic interference plate and the conductive frame are respectively connected to the grounding piece, so that the anti-electromagnetic interference plate is grounded.

2. The energy storage converter according to claim 1, characterized in that: The grounding element is a conductive spring sheet, one end of which is connected to the anti-electromagnetic interference plate, and the other end of which is connected to the conductive frame.

3. The energy storage converter according to claim 1, characterized in that: The energy storage converter further includes a lightning protection module, and the lightning protection module is arranged on the anti-electromagnetic interference board.

4. The energy storage converter according to claim 1, characterized in that: The energy storage converter also includes a copper busbar, which has a first section, a middle section and a second section. The middle section is located between the first section and the second section, and the first section and the second section respectively have an angle with the middle section; the connector and the anti-electromagnetic interference board are connected to the first section, and the second section is connected to the casing.

5. The energy storage converter according to claim 4, characterized in that: The energy storage converter further comprises a fuse and a common mode inductor, wherein the fuse is connected to the second section, and the fuse is connected to the common mode inductor, and the common mode inductor is used to be connected to the output board.

6. The energy storage converter according to claim 5, characterized in that: A distance is arranged between the anti-electromagnetic interference plate and the housing to form an installation space, and the fuse is arranged in the installation space.

7. The energy storage converter according to claim 4, characterized in that: The energy storage converter also includes a support rod, which is distributed with the copper bar on both sides of the anti-electromagnetic interference board. One end of the support rod is connected to the housing, and the other end of the support rod is connected to the anti-electromagnetic interference board.

8. The energy storage converter according to claim 5, characterized in that: The energy storage converter further comprises a shielding cover, and the shielding cover is arranged to cover the anti-electromagnetic interference board and the fuse.

9. The energy storage converter according to claim 1, characterized in that: The conductive frame is provided with a mounting groove for accommodating the magnetic ring. The conductive frame is fixedly connected to the side wall of the housing, and the notch of the mounting groove is arranged toward the side wall of the housing. A buffer pad for pressing the magnetic ring is arranged in the mounting groove.

10. The energy storage converter according to claim 9, characterized in that: The buffer pads include a plurality of buffer pads, including a first buffer pad and a second buffer pad, and the first buffer pad and the second buffer pad press the magnetic ring in different directions respectively.

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