Novel distributed energy storage system power distribution convergence cabinet

Abstract

The invention discloses a novel distributed energy storage system power distribution confluence cabinet which comprises a box shell, a power distribution assembly, a confluence assembly, an air inlet duct and an air conditioner. The box shell is provided with a cavity, a longitudinal partition plate is arranged in the box shell and divides the cavity into a left side cavity and a right side cavity, the left side cavity is communicated with the right side cavity, the power distribution assembly is arranged in the left side cavity, the confluence assembly is arranged in the right side cavity, and the air inlet channel is located in the right side cavity. The air conditioner is arranged on the box shell, the air conditioner is provided with an air outlet, the air outlet is communicated with the air inlet duct, cold air exhausted by the air conditioner enters the right side cavity through the air inlet duct, and part of the cold air entering the right side cavity enters the left side cavity. According to the power distribution confluence cabinet, the power distribution assembly and the confluence assembly can be cooled at the same time through one air conditioner, the structure is simple, the energy consumption is reduced, and the cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage systems, and in particular to a novel distributed energy storage system power distribution cabinet. Background Art

[0002] In the current energy storage field, distributed energy storage is an important direction. As an important part of the system, the power distribution cabinet plays an irreplaceable role. However, a large amount of heat will be generated during the convergence and distribution process. In addition, the power distribution cabinet, as an independent outdoor cabinet, needs to be isolated from the impact of the environment on the equipment inside the cabinet. Therefore, an additional cooling solution is needed to solve the heat dissipation problem of the power distribution cabinet. The heat dissipation of the power distribution cabinet is a difficult problem.

[0003] In view of this, the present invention is proposed. Summary of the invention

[0004] In order to solve one of the above technical problems, the present invention provides a new type of distributed energy storage system power distribution cabinet.

[0005] The present invention adopts the following technical solutions:

[0006] The purpose of this application is to provide a new type of distributed energy storage system power distribution cabinet, including:

[0007] A box shell, wherein the box shell has a cavity, a longitudinal partition is arranged in the box shell, and the longitudinal partition divides the cavity into a left cavity and a right cavity, and the left cavity and the right cavity are connected;

[0008] A power distribution assembly, the power distribution assembly being disposed in the left cavity;

[0009] A confluence assembly, the confluence assembly is arranged in the right cavity;

[0010] An air inlet duct, the air inlet duct is located in the right cavity;

[0011] An air conditioner is arranged on the box shell, and the air conditioner has an air outlet, and the air outlet is connected to the air inlet duct. The cold air discharged by the air conditioner enters the right cavity through the air inlet duct, and part of the cold air entering the right cavity enters the left cavity.

[0012] Optionally, an inner partition is provided in the right cavity, the inner partition is vertically connected to the longitudinal partition, and the inner partition divides the right cavity into a right front cavity and a right rear cavity;

[0013] The air inlet duct extends to the top of the right rear cavity;

[0014] The busbar assembly includes a busbar and a linear fuse disposed in the right rear cavity;

[0015] A first communication port is provided on the inner partition plate at a side of the busbar away from the air inlet duct, wherein the first communication port is connected with the right front cavity and the right rear cavity;

[0016] The air conditioner has a return air port, and the return air port is connected to the right front chamber;

[0017] The air inlet duct, the right rear cavity, the first connecting port, the right front cavity and the return air port of the air conditioner which are sequentially arranged in the box shell form a first cooling air path.

[0018] Optionally, a box body is arranged in the right rear cavity, and the box body is connected to the inner partition;

[0019] A switch cavity is formed between the box body and the inner partition;

[0020] The busbar assembly includes a frame switch disposed in the switch cavity;

[0021] The box body is provided with a second communication port and a third communication port, the second communication port is connected with the switch cavity and the right rear cavity, the third communication port is connected with the switch cavity and the right front cavity respectively, and the second communication port is located between the air inlet duct and the busbar;

[0022] The air inlet duct, the right rear cavity, the second connecting port, the switch cavity, the third connecting port, the right front cavity and the return air port of the air conditioner which are sequentially arranged in the box shell form a second cooling air path.

[0023] Optionally, a fourth communication port and a fifth communication port are provided on the longitudinal partition;

[0024] The fourth communication port is connected with the right rear cavity and the left side cavity;

[0025] The fifth communication port is connected with the right front cavity and the left side cavity;

[0026] The air inlet duct, the right rear cavity, the fourth connecting port, the left cavity, the fifth connecting port and the return air port of the air conditioner arranged in sequence in the box body form a third cooling air path.

[0027] Optionally, a horizontal mesh plate is provided in the right rear cavity;

[0028] The horizontal mesh plate divides the right rear cavity into an upper rear cavity and a lower rear cavity;

[0029] The busbar and the linear fuse are located in the rear lower cavity, and the air inlet duct is connected to the rear upper cavity;

[0030] The fourth communication port is connected with the upper rear cavity and the left side cavity;

[0031] Wherein, the port of the air inlet duct faces the horizontal mesh plate.

[0032] Optionally, a device mounting plate is provided in the left cavity;

[0033] At least part of the power distribution assembly is disposed on the device mounting plate;

[0034] The device mounting plate separates the left cavity into a left front cavity and a left rear cavity;

[0035] The fourth communication port and the fifth communication port are respectively arranged on both sides of the device mounting plate, and the left rear cavity is connected to the fourth communication port, and the left front cavity is connected to the fifth communication port;

[0036] The air inlet duct, the right rear cavity, the fourth connecting port, the left rear cavity, the device mounting plate, the left front cavity, the fifth connecting port and the return air port of the air conditioner arranged in sequence in the box body form the third cooling air path.

[0037] Optionally, the power distribution assembly comprises a UPS module;

[0038] The UPS module is disposed in the left front cavity, and the UPS module is disposed close to the fifth connecting port.

[0039] Optionally, the new distributed energy storage system power distribution cabinet includes a horizontal partition and a transformer;

[0040] The horizontal partition is located in the left cavity, and the horizontal partition separates the left cavity into an upper left cavity and a lower left cavity;

[0041] The power distribution assembly is arranged in the upper left cavity, and the upper left cavity is connected with the fourth communication port and the fifth communication port;

[0042] The transformer is arranged in the lower left cavity.

[0043] Optionally, the new distributed energy storage system power distribution cabinet includes a cooling fan;

[0044] An air inlet and an air outlet are arranged on the box shell, and the air inlet and the air outlet are respectively located on opposite sides of the lower left cavity;

[0045] The cooling fan is arranged on the box shell and covers the air outlet.

[0046] Optionally, the box shell includes a main box shell, a left door body and a right door body;

[0047] The main box shell has the left cavity and the right cavity;

[0048] The left door body is movably connected to the main box shell and is used to open or close the left cavity. The cooling fan is arranged on the left door body;

[0049] The right door body is movably connected to the main box shell and is used to open or close the right side cavity. The air conditioner is arranged on the right door body.

[0050] By adopting the above technical solution, the present application has the following beneficial effects:

[0051] The power distribution and junction cabinet of the present application can cool down the power distribution components and the junction components at the same time through an air conditioner, has a simple structure, reduces energy consumption, and reduces costs.

[0052] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The accompanying drawings are part of this application and are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0054] Figure 1 The structure diagram of the new distributed energy storage system power distribution cabinet provided in the embodiment of the present application is shown;

[0055] Figure 2 A first internal structure schematic diagram of a new type of distributed energy storage system power distribution cabinet provided in an embodiment of the present application is shown;

[0056] Figure 3 A second internal structural schematic diagram of a new type of distributed energy storage system power distribution combiner cabinet provided in an embodiment of the present application is shown;

[0057] Figure 4 A third internal structure schematic diagram of the new distributed energy storage system power distribution combiner cabinet provided in an embodiment of the present application is shown.

[0058] In the figure: 1, box shell; 11, longitudinal partition; 111, fourth communication port; 112, fifth communication port; 12, left side cavity; 121, upper left cavity; 1211, device mounting plate; 122, lower left cavity; 123, horizontal partition; 124, strong current longitudinal cable box; 125, weak current longitudinal cable box; 13, right side cavity; 131, right front cavity; 132, right rear cavity; 1321, horizontal mesh plate; 1322, rear upper cavity; 1323, rear lower cavity; 15, inner partition; 151. First connecting port; 16. Box body; 161. Second connecting port; 162. Third connecting port; 163. Switch cavity; 17. Left door body; 18. Right door body; 2. Power distribution assembly; 21. High-voltage device; 211. UPS module; 22. Low-voltage device; 3. Bus assembly; 31. Bus bar; 32. Linear fuse; 33. Frame switch; 4. Air inlet duct; 41. Guide plate; 42. Baffle; 5. Air conditioner; 6. Transformer; 7. Cooling fan.

[0059] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0061] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0062] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] Embodiment 1

[0064] See also Figures 1 to 4As shown, the embodiment of the present application provides a novel distributed energy storage system power distribution and convergence cabinet, including: a box shell 1, a power distribution component 2, a convergence component 3, an air inlet duct 4 and an air conditioner 5. The box shell 1 has a cavity, and a longitudinal partition 11 is arranged in the box shell 1. The longitudinal partition 11 divides the cavity into a left cavity 12 and a right cavity 13. The left cavity 12 and the right cavity 13 are connected. The power distribution component 2 is arranged in the left cavity 12, the convergence component 3 is arranged in the right cavity 13, the air inlet duct 4 is located in the right cavity 13, and the air conditioner 5 is arranged on the box shell 1. The air conditioner 5 has an air outlet, and the air outlet is connected to the air inlet duct 4. The cold air discharged by the air conditioner 5 enters the right cavity 13 through the air inlet duct 4, and part of the cold air entering the right cavity 13 enters the left cavity 12.

[0065] The power distribution and junction cabinet of the present application can cool down the power distribution component 2 and the junction component 3 at the same time through an air conditioner 5, has a simple structure, reduces energy consumption, and reduces costs.

[0066] In some possible embodiments, an inner partition 15 is provided in the right side cavity 13, and the inner partition 15 is vertically connected to the longitudinal partition 11. The inner partition 15 divides the right side cavity 13 into a right front cavity 131 and a right rear cavity 132. The air inlet duct 4 extends to the top of the right rear cavity 132. The busbar assembly 3 includes a busbar 31 and a linear fuse 32 arranged in the right rear cavity 132. A first connecting port 151 is provided on the inner partition 15 on the side of the busbar 31 away from the air inlet duct 4. The first connecting port 151 connects the right front cavity 131 and the right rear cavity 132. The air conditioner 5 has a return air port, and the return air port is connected to the right front cavity 131. The air inlet duct 4, the right rear cavity 132, the first connecting port 151, the right front cavity 131 and the return air port of the air conditioner 5 arranged in sequence in the box shell 1 form a first cooling air path.

[0067] In the present application, by forming a first cooling air path in the housing 1 , the high-power device busbar 31 and the linear fuse 32 in the right cavity 13 can be effectively cooled and cooled.

[0068] Using the air conditioner 5 to dissipate heat from the power distribution component 2 and the busbar component 3 is an effective way. In the prior art, due to functional and safety requirements, high-power devices cannot be arranged in a centralized manner. The cold air from the air conditioner 5 cannot accurately reach the high-temperature position without guidance, which will lead to poor cooling effect in the local area and overheating of the device, or low cooling efficiency and increased energy consumption due to frequent startup of the air conditioner 5. In order to effectively solve such problems, it is necessary to adjust the air flow direction of the air conditioner 5. Designing an air inlet duct 4 that can effectively guide the air flow is a practical solution to solve the heat dissipation problem of the dispersed layout of high-power devices.

[0069] In the present application, the air inlet duct 4 may be an air duct shell extending in the thickness direction of the box shell 1, and the end of the air duct shell extends to the right rear cavity 132 and extends downward. The shell wall at the top of the air inlet duct 4 includes a horizontally arranged guide plate 41 and a baffle plate 42 connected to the guide plate 41 and extending downwardly. The air inlet duct 4 actively intervenes in the cold air of the air conditioner 5 by setting the guide plate 41 and the baffle plate 42 according to the fluid mechanics properties of the air, so that it can smoothly flow to the busbar assembly 3 first, accurately perform thermal management on the high-heat area (busbar 31 and linear fuse 32), and reduce energy consumption.

[0070] In some possible implementations, a box body 16 is disposed in the right rear cavity 132, the box body 16 is connected to the inner partition 15, a switch cavity 163 is formed between the box body 16 and the inner partition 15, the confluence assembly 3 includes a frame switch 33 disposed in the switch cavity 163, a second connecting port 161 is provided on the inner partition 15 to connect the switch cavity 163 and the right rear cavity 132, the second connecting port 161 is located between the air inlet duct 4 and the confluence busbar 31, a third connecting port 162 is provided on the box body 16 to connect the switch cavity 163 and the right front cavity 131, and the air inlet duct 4, the right rear cavity 132, the second connecting port 161, the switch cavity 163, the third connecting port 162, the right front cavity 131 and the return air port of the air conditioner 5 sequentially disposed in the box shell 1 form a second cooling air path. The frame switch 33 and the confluence busbar 31 are disposed in separate cavities from the linear fuse 32, thereby improving safety. In the disclosed embodiment, a second cooling air path is formed in the box shell 1 to specifically cool the frame switch 33. In addition, considering that the temperature of the frame switch 33 is lower than that of the busbar 31 and the linear fuse 32, a second connecting port 161 is provided on the side between the air inlet duct 4 and the busbar 31, so that a small amount of hot cold air can enter the switch cavity 163 through the second connecting port 161 to cool the frame switch 33. It is important to note that the inner partition 15 and the box body 16 can be covered with mesh plates respectively, and the two mesh plates cover the first connecting port 151 and the second connecting port 161 respectively. Through the mesh density and opening size of each mesh plate, and by adjusting the angle of the baffle 42 with the help of simulation tools, the air path and air volume can be actively intervened to achieve accurate and efficient thermal management of the power distribution cabinet.

[0071] In some possible implementations, the fourth communication port 111 and the fifth communication port 112 are provided on the longitudinal partition 11, the fourth communication port 111 is connected to the right rear cavity 132 and the left cavity 12, the fifth communication port 112 is connected to the right front cavity 131 and the left cavity 12, and the air inlet duct 4, the right rear cavity 132, the fourth communication port 111, the left cavity 12, the fifth communication port 112 and the return air port of the air conditioner 5 sequentially arranged in the box form a third cooling air path. In the embodiment of the present application, by providing the first, second, third, fourth and fifth communication ports 112, the cold air is actively intervened so as to be diverted, the high-temperature area is accurately thermally managed, and energy consumption is reduced.

[0072] In some possible embodiments, a horizontal mesh plate 1321 is provided in the right rear cavity 132, and the horizontal mesh plate 1321 divides the right rear cavity 132 into a rear upper cavity 1322 and a rear lower cavity 1323. The busbar 31 and the linear fuse 32 are located in the rear lower cavity 1323. The air inlet duct 4 is connected to the rear upper cavity 1322, and the fourth connecting port 111 is connected to the rear upper cavity 1322 and the left cavity 12, wherein the port of the air inlet duct 4 faces the horizontal mesh plate 1321.

[0073] After the cold air from the air conditioner 5 passes through the air inlet duct 4, a small part of the cold air hits the horizontal mesh plate 1321 and bounces back, passes through the mesh plate covering the fourth connecting port 111 and comes into the left cavity 12 of the adjacent wall, takes away the heat from the power distribution component 2, and finally reaches the return air outlet of the air conditioner 5 through the fifth connecting port 112.

[0074] The baffle plate 42 forms an obtuse angle with the guide plate 41, which changes the wind direction while reducing the wind rebound loss. The guide plate 41 and the baffle plate 42 are covered with heat-insulating foam inside to reduce heat loss and prevent the generation of condensed water. After passing through the air inlet duct 4, most of the cold air from the air conditioner 5 passes through the horizontal mesh plate 1321 and directly blows the busbar 31 and the linear fuse 32, and then passes through the mesh plate covering the first connecting port 151, and finally reaches the air outlet of the air conditioner 5.

[0075] The air inlet duct 4 is composed of a guide plate 41, a baffle plate 42 and a heat-insulating foam. The guide plate 41 fits the air outlet of the air conditioner 5. The baffle plate 42 forms an obtuse angle with the guide plate 41, which changes the wind direction while reducing the rebound loss of the wind. The guide plate 41 and the baffle plate 42 are covered with heat-insulating foam inside to reduce heat loss and prevent the generation of condensed water. After passing through the air inlet duct 4, most of the cold air from the air conditioner 5 passes through the horizontal mesh plate 1321 and directly blows the busbar 31 and the DC fuse, and finally reaches the return air outlet of the air conditioner 5. A small part of the cold air enters the left cavity 12 through the fourth connecting port 111 to cool the power distribution component 2. Two mesh panels can be set on the longitudinal partition 11, covering the fourth connecting port 111 and the fifth connecting port 112 respectively. By adjusting the mesh density and size of the horizontal mesh panel 1321 and the mesh panel covering the fourth connecting port 111, the cold air diversion flow rate can be adjusted to accurately manage the heat in the high-temperature area and reduce energy consumption.

[0076] In some possible implementation schemes, a device mounting plate 1211 is provided in the left cavity 12, at least part of the power distribution assembly 2 is provided on the device mounting plate 1211, the device mounting plate 1211 divides the left cavity 12 into a left front cavity and a left rear cavity, the fourth connecting port 111 and the fifth connecting port 112 are provided on both sides of the device mounting plate 1211, and the left rear cavity is connected to the fourth connecting port 111, and the left front cavity is connected to the fifth connecting port 112, and the air inlet duct 4, the right rear cavity 132, the fourth connecting port 111, the left rear cavity, the device mounting plate 1211, the left front cavity, the fifth connecting port 112 and the return air port of the air conditioner 5 arranged in sequence in the box form the third cooling air path. The left rear cavity plays a role of buffering and rectifying the cold air flow, so that the cold air can pass through the device mounting plate 1211 evenly, and the various devices distributed on the device mounting plate 1211 are cooled.

[0077] Most of the power distribution components 2 are arranged on the device mounting plate 1211 , and the cold air flowing along the third cooling air path can flow through the device mounting plate 1211 to cool down the devices on the device mounting plate 1211 .

[0078] In some possible implementations, the power distribution assembly 2 includes a UPS module 211, which is disposed in the left front cavity and is disposed close to the fifth connecting port 112. The UPS module 211 is a component with a relatively high temperature in the power distribution assembly 2, and the third cooling air path can effectively cool the UPS module 211.

[0079] In some possible implementation schemes, the new distributed energy storage system power distribution cabinet includes a horizontal partition 123 and a transformer 6. The horizontal partition 123 is located in the left cavity 12, and the horizontal partition 123 separates the left cavity 12 into an upper left cavity 121 and a lower left cavity 122. The power distribution assembly 2 is arranged in the upper left cavity 121. The upper left cavity 121 is connected to the fourth connecting port 111 and the fifth connecting port 112, and the transformer 6 is arranged in the lower left cavity 122. The lower left cavity 122 is isolated from the upper left cavity 121, and the transformer 6 is arranged in the lower left cavity 122. If the temperature of the transformer 6 is too high, the transformer 6 is not arranged in the cooling air path of the above-mentioned air conditioner, so as to avoid the transformer 6 affecting the temperature of the cooling air path of the air conditioner, thereby affecting the cooling and temperature reduction effect of other devices.

[0080] In some possible implementation schemes, the new distributed energy storage system distribution cabinet includes a cooling fan 7, and an air inlet and an air exhaust port are arranged on the box shell 1, and the air inlet and the air exhaust port are respectively located on opposite sides of the lower left cavity 122, and the cooling fan 7 is arranged on the box shell 1 and covers the air exhaust port.

[0081] Shutters can be installed on the air inlet. When the cooling fan 7 rotates at high speed, the cold air on the outside of the box shell 1 can be blown into the cabinet through the shutters on the air inlet on the box shell 1, directly blowing the transformer 6, and forming an air duct for cooling the transformer 6 in the lower left cavity 122.

[0082] The power distribution cabinet provided in the embodiment of the present application can use a 3KW air conditioner 5 and a fan (cooling fan) for thermal management. Among them, three cooling air paths are designed for the cold air of the air conditioner 5 according to the amount of heat generated, and the cold air is diverted through the guide plate 41, the baffle plate 42 and multiple mesh plates. The first cooling air path dissipates heat for the busbar 31 and the linear fuse 32, the second cooling air path dissipates heat for the frame switch 33, and the third cooling air path dissipates heat for the power distribution component (such as UPS). The operating temperature of the transformer 6 can cover the ambient temperature, and a more economical fan (cooling fan 7) is selected to form an air duct for auxiliary heat dissipation.

[0083] In some possible embodiments, the box shell 1 includes a main box shell, a left door body 17 and a right door body 18, the main box shell has the left cavity 12 and the right cavity 13, the left door body 17 is movably connected to the main box shell for opening or closing the left cavity 12, the cooling fan 7 is arranged on the left door body 17, the right door body 18 is movably connected to the main box shell for opening or closing the right cavity 13, and the air conditioner 5 is arranged on the right door body 18.

[0084] In the embodiment of the present application, rock wool is wrapped around the box shell 1, and the transformer 6 in the lower left chamber 122 directly exchanges heat with the outside, and is separated from other devices by rock wool on all sides. The thermal management system consists of an air conditioner 5 and a fan.

[0085] Embodiment 2

[0086] like Figures 1 to 4 As shown, the second embodiment of the present application provides a further detailed description of the power distribution cabinet, including: a box shell 1, a power distribution component 2, a busbar component 3 and a transformer 6. The box shell 1 has a cavity, and a longitudinal partition 11 and a horizontal partition 123 are arranged in the box shell 1. The longitudinal partition 11 divides the cavity into a left cavity 12 and a right cavity 13, and the horizontal partition 123 divides the left cavity 12 into an upper left cavity 121 and a lower left cavity 122. The power distribution component 2 is arranged in the upper left cavity 121, the busbar component 3 is arranged in the right cavity 13, and the transformer 6 is arranged in the lower left cavity 122. The output end of the transformer 6 is connected to the power distribution component 2.

[0087] In the embodiment of the present application, the main function of the transformer 6 is to reduce the voltage of 480V electricity in North America to 380V to supply power to the devices in the distribution assembly 2. The distribution junction cabinet of the present invention integrates the distribution assembly 2, the junction assembly 3 and the transformer 6, saving space and reducing costs. In the embodiment of the present application, the junction assembly 3, the distribution assembly 2 and the transformer 6 are arranged in separate chambers, separated by longitudinal partitions 11 and horizontal partitions 123, which reduces electromagnetic interference, improves the safety of the equipment, and reduces the risk of electric shock to personnel during maintenance and inspection. In the embodiment of the present application, the distribution assembly 2 and the junction assembly 3 are arranged in left and right chambers, and the incoming line unit and the outgoing line unit of the distribution assembly 2 do not need to pass through the right chamber 13, so that interference and noise between different circuits will not be generated, which reduces the maintenance time of the equipment and improves the safety during maintenance.

[0088] In the embodiment of the present application, the power distribution assembly 2 and the transformer 6 are placed in close proximity, which shortens the cable length to the maximum extent and solves the problem of increased system footprint and cable costs caused by the transformer 6 being placed in a separate box.

[0089] In the embodiment of the present application, the transformer 6 is incorporated into the box shell 1, and there is no need to equip a separate cabinet, which will reduce the number of equipment in the entire distributed energy storage system and reduce the floor space. The cable length between the distribution component 2 and the transformer 6 becomes an in-cabinet cable, which is short in length and reduces costs.

[0090] In some possible embodiments, the box shell 1 has a bottom wall, a top wall and two side walls, the top wall and the bottom wall are spaced apart from each other, the two side walls are arranged on both sides of the bottom wall, and the side walls are respectively connected to the top wall and the bottom wall, the top wall, the bottom wall and the side walls enclose the cavity, the longitudinal partition 11 is located in the cavity, and the longitudinal partition 11 is parallel to the side wall, the upper and lower ends of the longitudinal partition 11 are respectively connected to the top wall and the bottom wall, the longitudinal partition 11 divides the cavity into a left cavity 12 and a right cavity 13, a horizontal partition 123 is located in the left cavity 12, and the horizontal partition 123 is respectively connected to the side wall and the longitudinal partition 11 to separate the left cavity 12 into the upper left cavity 121 and the lower left cavity 122.

[0091] The above-mentioned longitudinal partition 11 can be a metal plate, and the horizontal partition 123 can also be a metal plate. The power distribution cabinet using metal plates as compartments has higher safety and has the effect of shielding electromagnetic interference. The upper left chamber 121, the lower left chamber 122 and the right chamber 13 are all compartments separated by metal plates. The metal plate compartment can effectively prevent people from electric shock and the spread of faults. Each compartment is independent and closed, and the operator will not accidentally touch the components of other energized compartments during maintenance, thereby avoiding the risk of electric shock. In addition, when a fault occurs inside a compartment, the metal partition and insulation measures can prevent the fault current and arc from spreading to other compartments, reducing the impact on the entire distribution cabinet and even the power system. The metal plate has good electromagnetic shielding performance, which can effectively reduce the interference of external electromagnetic waves on the electrical components inside the box shell 1, and improve the stability and reliability of the equipment.

[0092] In some possible implementation schemes, a wiring avoidance hole is provided on the horizontal partition 123 , and the cable extending through the lower left cavity 122 can pass through the wiring avoidance hole and extend to the upper left cavity 121 .

[0093] In some possible implementations, in the left cavity 12, the cables are divided into strong current cables and weak current cables, at least part of the strong current cables are located on one side of the side panel and extend longitudinally, and at least part of the weak current cables are located on one side of the longitudinal partition 11 and extend longitudinally. The strong current cables can be 380V and 220V AC power distribution circuits, and the weak current cables are signal cables, usually 24V cables. By separating the strong current cables and the weak current cables, it is helpful to reduce interference and noise between circuits.

[0094] The bus assembly 3 of the right chamber 13 is a 1500V DC bus circuit. The left chamber 12 and the right chamber 13 are separated by a metal plate. Cables of different voltages have independent cable ducts, which isolates interference and noise between different circuits to the maximum extent.

[0095] In some possible embodiments, a high-current cable box and a low-current cable box are disposed in the left cavity 12, wherein the high-current cable box includes a high-current longitudinal cable box 124, and the low-current cable box includes a low-current longitudinal cable box 125. The high-current longitudinal cable box 124 is disposed on one side of the side panel, and the low-current longitudinal cable box 125 is disposed on one side of the longitudinal partition 11, wherein both the high-current longitudinal cable box 124 and the low-current longitudinal cable box 125 have wiring channels.

[0096] Cables of different voltages are respectively installed in different cable boxes. Independent cable boxes isolate interference and noise between different circuits to the maximum extent. The strong-current cable box includes a strong-current longitudinal cable box 124 and a strong-current transverse cable box, and the weak-current cable box includes a weak-current longitudinal cable box 125 and may also include a weak-current transverse cable box. Strong-current cables are installed in the strong-current cable box, and weak-current cables are installed in the weak-current cable box, which isolates interference and noise between different circuits to the maximum extent.

[0097] In some possible implementation schemes, the power distribution assembly 2 is divided into a high-voltage device 21 and a low-voltage device 22, wherein the high-voltage device 21 refers to a device that uses 380V and 220V AC power. The low-voltage device 22 refers to a device that uses 24V power. The types of the specific devices of the high-voltage device 21 and the low-voltage device 22 in the power distribution assembly 2 are conventional technologies in the art, and this application will not go into details.

[0098] Each of the high-voltage devices 21 is arranged on a side of the upper left cavity 121 close to the horizontal partition 123, and each of the low-voltage devices 22 is arranged in the upper left cavity 121, and each of the low-voltage devices 22 is located on a side of the high-voltage device 21 away from the horizontal partition 123, and the extension height of the high-voltage longitudinal cable box 124 is less than the extension height of the low-voltage longitudinal cable box 125.

[0099] The embodiment of the present application performs secondary classification of the power distribution component 2, with AC 380V and 220V devices arranged on the lower side, and related terminals arranged on the left side. The 24V low-voltage device 22 is arranged on the upper side, and the related lines and terminals are mainly arranged on the right side. The two cables are completely shunted and separated, and the corresponding cable labels are affixed to the wire trough. The present invention optimizes the power distribution component 2 and the busbar component 3, which is easy to maintain and greatly reduces the maintenance time. Among them, the strong current cable is used to electrically connect the high-voltage device 21, and the weak current cable is used to electrically connect the low-voltage device 22.

[0100] In some possible implementation schemes, a high-voltage inlet and a low-voltage inlet are provided on the bottom wall, both of which are connected to the lower left cavity 122 , and the high-voltage inlet is close to the side panel, while the low-voltage inlet is close to the longitudinal partition 11 .

[0101] A 380V and 220V line inlet hole (high-voltage line inlet) is opened on the left side of the bottom of transformer room 6 in the lower left cavity 122, and a 24V signal line inlet hole (low-voltage line inlet) is opened on the right side. A cable trough (cable box) of appropriate size is arranged along the routing direction of the two cables to completely divert and separate the two cables, and corresponding cable labels are affixed to the cable trough.

[0102] In some possible implementation schemes, the distributed energy storage system distribution junction cabinet includes a left door body 17 and a right door body 18. The left door body 17 can be movably connected to the box shell 1 to open or close the left cavity 12. The right door body 18 can be movably arranged on the box shell 1 to open or close the right cavity 13.

[0103] In the present application, the left chamber 12 and the right chamber 13 are each equipped with an independent door panel, and the bottom of the left chamber 12 and the right chamber 13 have their own input and output line positions. There is no crossing of lines between the two chambers, and different circuits have corresponding wire troughs. When repairing and inspecting the electrical circuit, you only need to open the corresponding door panel and find the corresponding wire trough, which solves the problems of long maintenance time and unsafe inspection.

[0104] In some possible implementation schemes, a battery cabinet inlet hole and a PCS cabinet outlet hole are provided on the bottom wall, so that the busbar assembly 3 can be connected to the battery cabinet and the PCS cabinet respectively through cables. The battery cabinet inlet hole and the PCS cabinet outlet hole are both connected to the right cavity 13. The cable holes of the power distribution assembly 2 and the busbar assembly 3 are separated and do not interfere with each other. Binding points can also be arranged on the bottom wall to facilitate the fixing of cables.

[0105] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A new type of distributed energy storage system power distribution cabinet, characterized in that: include: A box shell, wherein the box shell has a cavity, a longitudinal partition is arranged in the box shell, and the longitudinal partition divides the cavity into a left cavity and a right cavity, and the left cavity and the right cavity are connected; A power distribution assembly, the power distribution assembly being disposed in the left cavity; A confluence assembly, the confluence assembly is arranged in the right cavity; An air inlet duct, the air inlet duct is located in the right cavity; An air conditioner is arranged on the box shell, and the air conditioner has an air outlet, and the air outlet is connected to the air inlet duct. The cold air discharged by the air conditioner enters the right cavity through the air inlet duct, and part of the cold air entering the right cavity enters the left cavity.

2. The new type of distributed energy storage system power distribution cabinet according to claim 1 is characterized in that: An inner partition is arranged in the right cavity, the inner partition is vertically connected to the longitudinal partition, and the inner partition divides the right cavity into a right front cavity and a right rear cavity; The air inlet duct extends to the top of the right rear cavity; The busbar assembly includes a busbar and a linear fuse disposed in the right rear cavity; A first communication port is provided on the inner partition plate at a side of the busbar away from the air inlet duct, wherein the first communication port is connected with the right front cavity and the right rear cavity; The air conditioner has a return air port, and the return air port is connected to the right front chamber; The air inlet duct, the right rear cavity, the first connecting port, the right front cavity and the return air port of the air conditioner which are sequentially arranged in the box shell form a first cooling air path.

3. The new type of distributed energy storage system power distribution cabinet according to claim 2 is characterized in that: A box body is arranged in the right rear cavity, and the box body is connected to the inner partition; A switch cavity is formed between the box body and the inner partition; The busbar assembly includes a frame switch disposed in the switch cavity; The box body is provided with a second communication port and a third communication port, the second communication port is connected with the switch cavity and the right rear cavity, the third communication port is connected with the switch cavity and the right front cavity respectively, and the second communication port is located between the air inlet duct and the busbar; The air inlet duct, the right rear cavity, the second connecting port, the switch cavity, the third connecting port, the right front cavity and the return air port of the air conditioner which are sequentially arranged in the box shell form a second cooling air path.

4. The new type of distributed energy storage system power distribution cabinet according to claim 3 is characterized in that: The longitudinal partition is provided with a fourth communication port and a fifth communication port; The fourth communication port is connected with the right rear cavity and the left side cavity; The fifth communication port is connected with the right front cavity and the left side cavity; The air inlet duct, the right rear cavity, the fourth connecting port, the left cavity, the fifth connecting port and the return air port of the air conditioner arranged in sequence in the box body form a third cooling air path.

5. The new type of distributed energy storage system power distribution cabinet according to claim 4 is characterized in that: A horizontal mesh plate is arranged in the right rear cavity; The horizontal mesh plate divides the right rear cavity into an upper rear cavity and a lower rear cavity; The busbar and the linear fuse are located in the rear lower cavity, and the air inlet duct is connected to the rear upper cavity; The fourth communication port is connected with the upper rear cavity and the left side cavity; Wherein, the port of the air inlet duct faces the horizontal mesh plate.

6. The new type of distributed energy storage system power distribution cabinet according to claim 5 is characterized in that: A device mounting plate is provided in the left cavity; At least part of the power distribution assembly is disposed on the device mounting plate; The device mounting plate separates the left cavity into a left front cavity and a left rear cavity; The fourth communication port and the fifth communication port are respectively arranged on both sides of the device mounting plate, and the left rear cavity is connected to the fourth communication port, and the left front cavity is connected to the fifth communication port; The air inlet duct, the right rear cavity, the fourth connecting port, the left rear cavity, the device mounting plate, the left front cavity, the fifth connecting port and the return air port of the air conditioner arranged in sequence in the box body form the third cooling air path.

7. The new type of distributed energy storage system power distribution cabinet according to claim 6 is characterized in that: The power distribution assembly includes a UPS module; The UPS module is disposed in the left front cavity, and the UPS module is disposed close to the fifth connecting port.

8. The new type of distributed energy storage system power distribution cabinet according to claim 4 is characterized in that: Includes horizontal partitions and transformers; The horizontal partition is located in the left cavity, and the horizontal partition separates the left cavity into an upper left cavity and a lower left cavity; The power distribution assembly is arranged in the upper left cavity, and the upper left cavity is connected with the fourth communication port and the fifth communication port; The transformer is arranged in the lower left cavity.

9. The new type of distributed energy storage system power distribution cabinet according to claim 8 is characterized in that: Including cooling fan; An air inlet and an air outlet are arranged on the box shell, and the air inlet and the air outlet are respectively located on opposite sides of the lower left cavity; The cooling fan is arranged on the box shell and covers the air outlet.

10. The new type of distributed energy storage system power distribution cabinet according to claim 9 is characterized in that: The box shell comprises a main box shell, a left door body and a right door body; The main box shell has the left cavity and the right cavity; The left door body is movably connected to the main box shell and is used to open or close the left cavity. The cooling fan is arranged on the left door body; The right door body is movably connected to the main box shell and is used to open or close the right side cavity. The air conditioner is arranged on the right door body.

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