Horizontal confluence cabinet and energy storage system
By designing a horizontal bus cabinet, setting up wiring holes on the battery side and PCS side, combining copper row mounting brackets and insulated support columns, the problems of large footprints and confusing wiring of the vertical bus cabinet are solved, and safe and efficient installation and maintenance in limited space are achieved.
Patent Information
- Application Number
- CN202510540379.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2025-07-18
AI Technical Summary
The existing upright convergence cabinet covers a large area, has chaotic wiring and poses safety hazards, making it difficult to use in environments with limited space.
A horizontal bus cabinet is designed, adopting a horizontal structure, and the positive and negative pole wiring holes on the battery side and PCS side are set to avoid wiring interference. It also has an intermediate spacer for the DC bus chamber and AC distribution chamber in the cabinet body, and a copper row mounting bracket and insulated support column are used to fix the cables to reduce space occupation.
It realizes avoiding wiring interference in limited space, reduces safety hazards, improves maintenance convenience, and is suitable for containers, battery racks and wall installations.
Smart Images
Figure CN120341703A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of power systems, and particularly to a horizontal busbar cabinet and an energy storage system. Background Art
[0002] The busbar cabinet is an important part of the energy storage system. The DC part of the battery is connected to the PCS (English name: Power Conversion System, Chinese name: Energy Storage Inverter, abbreviated as PCS) through the busbar cabinet for DC busbar connection. The PCS can control the charging and discharging processes of the storage battery and perform AC-DC conversion. In the absence of a power grid, it can directly supply power to AC loads.
[0003] The existing busbar cabinets are usually of an upright structure and occupy a large area during installation. They are usually not suitable for use environments with small size spaces. Moreover, the wiring methods of the PCS cables and the battery-side cables of the upright busbar cabinet are bottom-in and bottom-out, that is, the cables enter and exit from the bottom of the upright busbar cabinet. This wiring method easily makes the system wiring chaotic, thus posing certain potential safety hazards and being inconvenient for maintenance.
[0004] Therefore, how to provide a busbar cabinet with small space occupancy and capable of avoiding wiring interference is a technical problem that those skilled in the art urgently need to solve. Summary of the Invention
[0005] One object of this application is to provide a horizontal busbar cabinet that not only occupies small space but also can avoid wiring interference, and another object is to provide an energy storage system including the above horizontal busbar cabinet.
[0006] To solve the above technical problems, this application provides the following technical solutions:
[0007] A horizontal busbar cabinet includes a cabinet body. A battery-side positive wiring hole and a battery-side negative wiring hole are provided on the first side of the cabinet body, and a PCS positive wiring hole and a PCS negative wiring hole are provided on the second side of the cabinet body. The first side and the second side are different sides of the cabinet body.
[0008] In some embodiments, the first side and the second side are opposite sides of the cabinet body.
[0009] In some embodiments, a secondary wiring hole is further provided on the first side of the cabinet body, and a secondary wiring reserved hole is further provided on the second side of the cabinet body.
[0010] In some embodiments, the cabinet body is of a cuboid structure, and installation parts are respectively provided at the four corners of the bottom of the cabinet body. Connection holes for fasteners to pass through are provided on the installation parts.
[0011] In some embodiments, an intermediate separator is provided inside the cabinet to divide its inner cavity into a DC bus chamber and an AC power distribution chamber. A PCS positive wire groove and a PCS negative wire groove are provided in the DC bus chamber. The PCS positive wire groove communicates with the PCS positive wire hole, and the PCS negative wire groove communicates with the PCS negative wire hole. A breaker mounting member for mounting a circuit breaker is also provided in the DC bus chamber. The PCS positive wire groove and the PCS negative wire groove are respectively located on both sides of the breaker mounting member.
[0012] In some embodiments, a PCS positive transfer copper bar, a PCS positive connection copper bar, a PCS negative transfer copper bar, and a PCS negative connection copper bar are also provided in the DC bus chamber. The PCS positive transfer copper bar is used to connect the PCS positive of the circuit breaker and the PCS positive connection copper bar, and the PCS negative transfer copper bar is used to connect the PCS negative of the circuit breaker and the PCS negative connection copper bar. A battery-side positive transfer copper bar, a battery-side positive connection copper bar, a battery-side negative transfer copper bar, and a battery-side negative connection copper bar are also provided in the DC bus chamber. The battery-side positive transfer copper bar is used to connect the battery-side positive of the circuit breaker and the battery-side positive connection copper bar, and the battery-side negative transfer copper bar is used to connect the battery-side negative of the circuit breaker and the battery-side negative connection copper bar.
[0013] In some embodiments, a PCS copper bar mounting bracket and a battery-side copper bar mounting bracket are also provided in the DC bus chamber. The PCS copper bar mounting bracket is provided with a PCS positive insulating support column and a PCS negative insulating support column. One end of the PCS positive transfer copper bar and the PCS positive connection copper bar is connected to the PCS copper bar mounting bracket through the PCS positive insulating support column, and one end of the PCS negative transfer copper bar and the PCS negative connection copper bar is connected to the PCS copper bar mounting bracket through the PCS negative insulating support column. The battery-side copper bar mounting bracket is provided with a battery-side positive insulating support column and a battery-side negative insulating support column. One end of the battery-side positive transfer copper bar and the battery-side positive connection copper bar is connected to the battery-side copper bar mounting bracket through the battery-side positive insulating support column, and one end of the battery-side negative transfer copper bar and the battery-side negative connection copper bar is connected to the battery-side copper bar mounting bracket through the battery-side negative insulating support column.
[0014] In some embodiments, both ends of the PCS copper bar mounting bracket and both ends of the battery-side copper bar mounting bracket are respectively connected to the side part of the cabinet and the intermediate separator.
[0015] In some embodiments, heat dissipation holes are provided on the side part of the cabinet.
[0016] An energy storage system includes the horizontal busbar cabinet described in any one of the above.
[0017] Compared with the prior art, the above technical solution has the following advantages:
[0018] For the horizontal busbar cabinet and the energy storage system provided by the present application, the horizontal busbar cabinet includes a cabinet body. A battery-side positive-wire hole and a battery-side negative-wire hole are provided on the first side of the cabinet body, and a PCS positive-wire hole and a PCS negative-wire hole are provided on the second side of the cabinet body. The first side and the second side are different sides of the cabinet body, which can avoid the mutual interference between the PCS-side wiring and the battery-side wiring. In addition, since a horizontal busbar cabinet is adopted, it can be fixed on the ground of the container of the energy storage system during installation, or installed on the top or bottom of the battery rack. In addition, it can also be installed on the wall to reduce the space occupied by the busbar cabinet in the height direction. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0020] Figure 1 FIG. 15 is a schematic perspective view of one perspective of a horizontal busbar cabinet provided by a specific embodiment of the present application;
[0021] Figure 2 FIG. 19 is a schematic perspective view of another perspective of a horizontal busbar cabinet provided by a specific embodiment of the present application;
[0022] Figure 3 FIG. 23 is a schematic internal structure view of a horizontal busbar cabinet provided by a specific embodiment of the present application;
[0023] Figure 4 FIG. 27 is a schematic perspective view of a horizontal busbar cabinet when the cabinet door is in an open state provided by a specific embodiment of the present application;
[0024] Figure 5 FIG. 31 is a schematic back structure view of a horizontal busbar cabinet provided by a specific embodiment of the present application.
[0025] The reference numerals are as follows:
[0026] 1 - Cabinet body, 2 - Positive wire routing hole on the battery side, 3 - Negative wire routing hole on the battery side, 4 - Front panel, 5 - Secondary wire routing hole, 6 - PCS positive wire routing hole, 7 - PCS negative wire routing hole, 8 - Reserved secondary wire routing hole, 9 - Heat dissipation hole, 10 - PCS positive wire routing groove, 11 - Circuit breaker mounting part, 12 - Circuit breaker, 13 - PCS positive transfer copper bar, 14 - PCS positive connection copper bar, 15 - Battery side positive connection copper bar, 16 - Battery side positive transfer copper bar, 17 - Insulating board, 18 - Battery side negative transfer copper bar, 19 - Battery side negative connection copper bar, 20 - PCS negative transfer copper bar, 21 - PCS negative connection copper bar, 22 - PCS negative wire routing groove, 23 - Installation part, 24 - AC distribution chamber, 25 - Support plate, 26 - Insulating column, 27 - PCS copper bar mounting bracket, 28 - Support rod, 29 - Battery side copper bar mounting bracket, 30 - Frame, 31 - Support cross beam. Detailed implementation manners
[0027] In order to make the above - mentioned objects, features and advantages of the present application more obvious and understandable, the following will give a detailed description of the specific implementation manners of the present application with reference to the accompanying drawings.
[0028] In the following description, specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present application. Therefore, the present application is not limited by the specific implementation manners disclosed below.
[0029] Please refer to Figures 1 to 5 .
[0030] A specific implementation manner of the present application provides a horizontal busbar cabinet, including a cabinet body 1. The cabinet body 1 is preferably in a cuboid structure and can be made of sheet metal parts. In order to facilitate the installation of electrical components, a cabinet door is provided at the top of the cabinet body 1. One side of the cabinet door can be hinged to the cabinet body 1. The cabinet door can be a double - door or a single - door, which can be specifically selected according to actual needs. As Figure 1 and Figure 2As shown, a battery-side positive-wire hole 2 and a battery-side negative-wire hole 3 are provided on the first side of the cabinet body 1, and a PCS positive-wire hole 6 and a PCS negative-wire hole 7 are provided on the second side of the cabinet body 1. The first side and the second side are different sides of the cabinet body 1. For example, the first side of the cabinet body 1 is the front panel 4 of the cabinet body 1, and the second side is the rear panel of the cabinet body 1. Therefore, the battery-side positive-wire hole 2 and the battery-side negative-wire hole 3 can be provided on the front panel 4 of the cabinet body 1, and the PCS positive-wire hole 6 and the PCS negative-wire hole 7 can be provided on the rear panel of the cabinet body 1. It can avoid the mutual interference between the PCS-side wiring and the battery-side wiring. In addition, since a horizontal busbar cabinet is adopted, it can be fixed on the ground of the energy storage system container during installation, or installed on the top or bottom of the battery rack. In addition, it can also be installed on the wall to reduce the space occupied by the busbar cabinet in the height direction.
[0031] In some embodiments, the first side and the second side are opposite sides of the cabinet body 1, or can be adjacent sides of the cabinet body 1. When provided on adjacent sides of the cabinet body 1, the cabinet body 1 can be installed at a corner position. When provided on opposite sides of the cabinet body 1, the cabinet body 1 can be installed on the ground, the indoor top or the wall.
[0032] In some embodiments, as Figure 1 shown, a secondary-wire routing hole 5 is further provided on the first side of the cabinet body 1. As Figure 2 shown, a secondary-wire reserved routing hole 8 is further provided on the second side of the cabinet body 1. The secondary-wire routing hole 5 and the secondary-wire reserved routing hole 8 are used for the secondary wire to pass through. The secondary wire refers to a low-voltage circuit line for control, signal transmission, and protection functions. A plurality of secondary-wire routing holes 5 can be provided on the first side of the cabinet body 1. In order to prevent multiple secondary wires from interfering with each other, a separator can be provided in the secondary-wire routing hole 5 so that there are multiple small holes in the secondary-wire routing hole 5. For example, a cross-shaped separator is provided in the secondary-wire routing hole 5. At this time, there are four small holes in the secondary-wire routing hole 5. In addition, in addition to the cross-shaped separator, a grid-shaped separator or other shaped separators can also be used, as long as the secondary-wire routing hole 5 can be divided into multiple small holes. Further, the separator can be detachably connected in the secondary-wire routing hole 5 to replace the separator with different numbers of small holes as needed, so as to improve the applicability of the secondary-wire routing hole 5 to different numbers of secondary wires. In addition, the design of the secondary-wire reserved routing hole 8 can refer to the above secondary-wire routing hole 5. When in use, the secondary-wire routing hole 5 can be selected for wiring, or the secondary-wire reserved routing hole 8 can be selected for wiring.
[0033] In some embodiments, the cabinet body 1 is of a cuboid structure, and installation parts 23 are respectively provided at the four corners of the bottom of the cabinet body 1. For example Figure 3As shown, a protruding structure can be provided at each of the four corners at the bottom of the cabinet body 1. The protruding structure can be integrally formed with the cabinet body 1, for example, it can be formed by bending a sheet metal part. A connection hole for a fastener to pass through is provided on the mounting part 23, and the fastener can be selected as a bolt.
[0034] In some embodiments, as Figure 3 shown, an intermediate separator is provided in the cabinet body 1 to divide its inner cavity into a DC busbar chamber and an AC distribution chamber 24. A PCS positive wire groove 10 and a PCS negative wire groove 22 are provided in the DC busbar chamber. The PCS positive wire groove 10 is communicated with the PCS positive wire hole 6, and the PCS negative wire groove 22 is communicated with the PCS negative wire hole 7. The PCS positive wire groove 10 and the PCS negative wire groove 22 facilitate wire routing. A circuit breaker mounting member 11 for mounting a circuit breaker 12 is also provided in the DC busbar chamber. The circuit breaker mounting member can be selected as a bracket. The bracket is fixed in the cabinet body 1, and the circuit breaker is fixed on the bracket. The bracket can be fixed on the support cross beam 31 in the cabinet body 1. The PCS positive wire groove 10 and the PCS negative wire groove 22 are respectively located on both sides of the circuit breaker mounting member 11 to prevent interference between the PCS positive wire and the PCS negative wire.
[0035] In some embodiments, a PCS positive transfer copper bar 13, a PCS positive connection copper bar 14, a PCS negative transfer copper bar 20, and a PCS negative connection copper bar 21 are also provided in the DC busbar chamber. The PCS positive transfer copper bar 13 is used to connect the PCS positive of the circuit breaker 12 and the PCS positive connection copper bar 14, and the PCS negative transfer copper bar 20 is used to connect the PCS negative of the circuit breaker 12 and the PCS negative connection copper bar 21. When routing wires, the PCS positive wire passes through the PCS positive wire hole 6 and enters the PCS positive wire groove 10 in the cabinet body 1, and then is connected to the PCS positive connection copper bar 14. The PCS negative wire passes through the PCS negative wire hole 7 and enters the PCS negative wire groove 22 in the cabinet body 1, and then is connected to the PCS negative connection copper bar 21. A battery-side positive transfer copper bar 16, a battery-side positive connection copper bar 15, a battery-side negative transfer copper bar 18, and a battery-side negative connection copper bar 19 are also provided in the DC busbar chamber. The battery-side positive transfer copper bar 16 is used to connect the battery-side positive of the circuit breaker 12 and the battery-side positive connection copper bar 15, and the battery-side negative transfer copper bar 18 is used to connect the battery-side negative of the circuit breaker 12 and the battery-side negative connection copper bar 19. When routing wires, the battery-side positive wire enters the cabinet body 1 through the battery-side positive wire hole 2 and is then connected to the battery-side positive connection copper bar 15. The battery-side negative wire enters the cabinet body 1 through the battery-side negative wire hole 3 and is then connected to the battery-side negative connection copper bar 19.
[0036] In some embodiments, as Figure 4As shown in the figure, a PCS busbar mounting bracket 27 and a battery-side busbar mounting bracket 29 are also provided in the DC busbar chamber. Insulating columns 26 are respectively provided on the PCS busbar mounting bracket 27 and the battery-side busbar mounting bracket 29. Among them, a PCS positive insulating support column and a PCS negative insulating support column are provided on the PCS busbar mounting bracket 27. One ends of a PCS positive transfer busbar 13 and a PCS positive wiring busbar 14 are connected to the PCS busbar mounting bracket 27 through the PCS positive insulating support column. The other end of the PCS positive transfer busbar 13 can be fixed to the circuit breaker 12 by bolts. One ends of a PCS negative transfer busbar 20 and a PCS negative wiring busbar 21 are connected to the PCS busbar mounting bracket 27 through the PCS negative insulating support column. The other end of the PCS negative transfer busbar 20 can be fixed to the circuit breaker 12 by bolts. A battery-side positive insulating support column and a battery-side negative insulating support column are provided on the battery-side busbar mounting bracket 29. One ends of a battery-side positive transfer busbar 16 and a battery-side positive wiring busbar 15 are connected to the battery-side busbar mounting bracket 29 through the battery-side positive insulating support column. The other end of the battery-side positive transfer busbar 16 can be fixed to the circuit breaker 12 by bolts. One ends of a battery-side negative transfer busbar 18 and a battery-side negative wiring busbar 19 are connected to the battery-side busbar mounting bracket 29 through the battery-side negative insulating support column. The other end of the battery-side negative transfer busbar 18 can be fixed to the circuit breaker 12 by bolts. An insulating plate 17 is provided between the battery-side positive transfer busbar 16 and the battery-side negative transfer busbar 18.
[0037] In some embodiments, both ends of the PCS busbar mounting bracket 27 and both ends of the battery-side busbar mounting bracket 29 are respectively connected to the side part and the middle partition in the cabinet 1. For example Figure 4 As shown in the figure, the left end of the PCS busbar mounting bracket 27 is connected to the left side in the cabinet 1. For example, a support plate 25 is provided on the left side in the cabinet, and the left end of the PCS busbar mounting bracket 27 is connected to the support plate 25. The right end of the PCS busbar mounting bracket 27 is connected to the middle partition in the cabinet 1. The middle partition includes two parallel support rods 28 and multiple support beams located between the two support rods 28. The right end of the PCS busbar mounting bracket 27 can be fixed to the cross beam. As Figure 5 shown, one end of the battery-side busbar mounting bracket 29 can be fixed to the side frame 30 on the left side of the cabinet 1, and the other end can be fixed to the support rod 28.
[0038] In some embodiments, as Figure 2 shown, heat dissipation holes 9 are provided on the side part of the cabinet 1. For example, multiple rows can be respectively provided on the left and right sides of the cabinet 1, and each row has multiple equally spaced heat dissipation holes 9. Among them, two adjacent rows of heat dissipation holes 9 are staggered. In addition, heat dissipation holes 9 with other distribution methods can also be selected, and specifically can be selected according to actual needs.
[0039] An embodiment of the present invention further provides an energy storage system, which includes the horizontal busbar cabinet provided in any of the above embodiments. For the beneficial effects of the energy storage system, reference may be made to the horizontal busbar cabinet in the above embodiments, and details will not be elaborated here.
[0040] It should be noted that in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.
[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A horizontal busbar cabinet, comprising a cabinet body, characterized in that, The first side of the cabinet body is provided with a battery-side positive-wire hole and a battery-side negative-wire hole, and the second side of the cabinet body is provided with a PCS positive-wire hole and a PCS negative-wire hole. The first side and the second side are different sides of the cabinet body.
2. The horizontal busbar cabinet according to claim 1, wherein, The first side and the second side are opposite sides of the cabinet body.
3. The horizontal busbar cabinet according to claim 2, characterized in that, The first side of the cabinet body is further provided with a secondary-wire hole, and the second side of the cabinet body is further provided with a reserved secondary-wire hole.
4. The horizontal busbar cabinet according to claim 3, characterized in that, The cabinet body has a cuboid structure. Installation parts are respectively provided at the four corners of the bottom of the cabinet body, and connection holes for fasteners to pass through are provided on the installation parts.
5. The horizontal busbar cabinet according to claim 1, characterized in that, An intermediate separator for dividing the inner cavity of the cabinet body into a DC bus chamber and an AC distribution chamber is provided inside the cabinet body. A PCS positive-wire groove and a PCS negative-wire groove are provided in the DC bus chamber. The PCS positive-wire groove communicates with the PCS positive-wire hole, and the PCS negative-wire groove communicates with the PCS negative-wire hole. A circuit breaker mounting part for mounting a circuit breaker is further provided in the DC bus chamber. The PCS positive-wire groove and the PCS negative-wire groove are respectively located on both sides of the circuit breaker mounting part.
6. The horizontal busbar cabinet according to claim 5, characterized in that, A PCS positive-transfer copper bar, a PCS positive-wiring copper bar, a PCS negative-transfer copper bar, and a PCS negative-wiring copper bar are further provided in the DC bus chamber. The PCS positive-transfer copper bar is used to connect the PCS positive of the circuit breaker and the PCS positive-wiring copper bar, and the PCS negative-transfer copper bar is used to connect the PCS negative of the circuit breaker and the PCS negative-wiring copper bar. A battery-side positive-transfer copper bar, a battery-side positive-wiring copper bar, a battery-side negative-transfer copper bar, and a battery-side negative-wiring copper bar are further provided in the DC bus chamber. The battery-side positive-transfer copper bar is used to connect the battery-side positive of the circuit breaker and the battery-side positive-wiring copper bar, and the battery-side negative-transfer copper bar is used to connect the battery-side negative of the circuit breaker and the battery-side negative-wiring copper bar.
7. The horizontal busbar cabinet according to claim 6, characterized in that, A PCS copper-bar mounting bracket and a battery-side copper-bar mounting bracket are further provided in the DC bus chamber. PCS positive-insulating support columns and PCS negative-insulating support columns are provided on the PCS copper-bar mounting bracket. One ends of the PCS positive-transfer copper bar and the PCS positive-wiring copper bar are connected to the PCS copper-bar mounting bracket through the PCS positive-insulating support columns, and one ends of the PCS negative-transfer copper bar and the PCS negative-wiring copper bar are connected to the PCS copper-bar mounting bracket through the PCS negative-insulating support columns. Battery-side positive-insulating support columns and battery-side negative-insulating support columns are provided on the battery-side copper-bar mounting bracket. One ends of the battery-side positive-transfer copper bar and the battery-side positive-wiring copper bar are connected to the battery-side copper-bar mounting bracket through the battery-side positive-insulating support columns, and one ends of the battery-side negative-transfer copper bar and the battery-side negative-wiring copper bar are connected to the battery-side copper-bar mounting bracket through the battery-side negative-insulating support columns.
8. The horizontal busbar cabinet according to claim 7, wherein Both ends of the PCS copper bar mounting bracket and both ends of the battery-side copper bar mounting bracket are respectively connected to the side part inside the cabinet body and the intermediate separator.
9. The horizontal busbar cabinet according to claim 1, characterized in that, The side part of the cabinet body is provided with heat dissipation holes.
10. An energy storage system, characterized in that, It includes the horizontal busbar cabinet according to any one of claims 1 to 9.