A power distribution bus cabinet and energy storage container

Abstract

The utility model relates to battery energy storage device technical field provides a kind of power distribution busbar cabinet, energy storage container, power distribution busbar cabinet includes: cabinet, high pressure box subassembly, power distribution busbar subassembly and energy storage liquid cooling box, cabinet is installed in the energy storage liquid cooling box of energy storage container, energy storage liquid cooling box is installed on the box one end surface along the first direction of energy storage container, cabinet is inside along second direction and is divided into first chamber and second chamber, high pressure box subassembly is installed in first chamber, power distribution busbar subassembly is installed in second chamber. Through the modularization setting of power distribution busbar cabinet, the physical isolation of high voltage equipment and battery cabin is realized, and the energy density of energy storage unit is effectively improved;Independent chamber design makes equipment maintenance operation more in line with the ergonomic requirement, reduces operation risk.

Description

Technical Field

[0001] This utility model relates to the field of battery energy storage equipment technology, and in particular to a power distribution combiner cabinet and an energy storage container. Background Technology

[0002] Currently, traditional energy storage containers on the market are equipped with one high-voltage box per cluster and one busbar disconnect switch for the whole container. Generally, the high-voltage box is placed together with the battery pack in the battery compartment, mostly at the bottom of the container, but some are at the top or middle of the container. There is no air conditioning in the battery compartment, and the busbar disconnect switch is placed in the busbar cabinet in the electrical compartment.

[0003] In existing technologies, the high-voltage box is placed inside the battery compartment, occupying considerable space and hindering the improvement of battery energy density. It also increases the risk of thermal runaway due to high-voltage arcing. Regardless of its location, the compartment door must be opened every time the switch is operated, making after-sales maintenance cumbersome. Placing it on the top or bottom is ergonomically unfriendly and difficult to operate. Furthermore, the heat generated by the high-voltage box during system operation cannot dissipate quickly within the battery compartment, causing localized overheating and potentially leading to battery pack thermal runaway. The combination of the high-voltage box's isolating switch and busbar isolating switch is costly and contradicts the design philosophy of low cost and high performance.

[0004] To address the above issues, a power distribution combiner cabinet and an energy storage container are proposed. Utility Model Content

[0005] The purpose of this invention is to provide a power distribution combiner cabinet and an energy storage container, which have the advantages of improving battery energy density, reducing the risk of thermal runaway, improving maintenance convenience, and reducing costs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] According to an embodiment of the present utility model, the power distribution combiner cabinet includes: a cabinet body, a high-voltage box assembly, a power distribution combiner assembly, and an energy storage liquid-cooled box. The cabinet body is installed inside the energy storage liquid-cooled box of the energy storage container. The energy storage liquid-cooled box is installed on one end face of the cabinet body along a first direction of the energy storage container. The interior of the cabinet body is divided into a first chamber and a second chamber along a second direction. The high-voltage box assembly is installed in the first chamber, and the power distribution combiner assembly is installed in the second chamber.

[0008] According to the power distribution combiner cabinet of this utility model embodiment, the modular power distribution combiner cabinet reduces the space occupation of high-voltage equipment in the battery compartment and increases the energy density of the energy storage unit; the functional zoning and independent heat dissipation design effectively suppress the temperature rise of the equipment during operation; the split cabinet door structure ensures that high-voltage operation and power distribution maintenance do not interfere with each other, reducing the frequency of opening the battery compartment during maintenance; the integrated layout reduces cable length and connection nodes, reducing system resistance loss and failure probability.

[0009] In addition, the power distribution combiner cabinet according to the above embodiments of this utility model may also have the following additional technical features:

[0010] In some embodiments of this utility model, the power distribution busbar assembly includes a busbar assembly, which is installed in the second cavity, located on the bottom wall of the cabinet and away from the side wall of the cabinet.

[0011] In some embodiments of this utility model, the power distribution bus assembly further includes an AC incoming line assembly, which is installed in the second chamber, located on the bottom wall of the cabinet and close to the side wall of the cabinet.

[0012] In some embodiments of this utility model, the power distribution bus assembly further includes a power supply, which is an uninterruptible power supply. The power supply is installed in the second chamber, located on the top wall of the cabinet and close to the side wall of the cabinet.

[0013] In some embodiments of this utility model, the power distribution bus assembly further includes a fire controller, which is installed in the second chamber, located on the top wall of the cabinet and away from the side wall of the cabinet.

[0014] In some embodiments of this utility model, a first cabinet door and a second cabinet door are also included. The cabinet body has an opening in a first direction. The first cabinet door and the second cabinet door are installed at the opening. The first cabinet door enables the opening and closing of the first chamber, and the second cabinet door enables the opening and closing of the second chamber.

[0015] In some embodiments of this utility model, a cooling device is also included, which is installed on one end face of the second cabinet door near the second chamber to achieve cooling of the interior of the cabinet.

[0016] In some embodiments of this utility model, a sealing element is also included. The sealing element is installed on the cabinet body and located at the opening, and the sealing element cooperates with the first cabinet door and the second cabinet door to seal the cabinet body.

[0017] In some embodiments of this utility model, a support frame is also included, through which the high-voltage box assembly is installed in the first chamber.

[0018] This utility model also provides an energy storage container, which includes the above-mentioned power distribution combiner cabinet.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] By integrating the high-voltage box assembly and the power distribution bus assembly into the cabinet and installing them in separate zones, while optimizing the layout of the energy storage liquid cooling box, the problems of high-voltage boxes occupying battery compartment space, low heat dissipation efficiency, and complex maintenance in traditional technologies are solved. This approach has the advantages of increasing battery energy density, reducing the risk of thermal runaway, improving maintenance convenience, and reducing costs.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the power distribution combiner cabinet structure according to an embodiment of the present utility model. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the power distribution combiner cabinet structure according to an embodiment of the present utility model. Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the energy storage container structure according to an embodiment of the present utility model.

[0025] Figure Labels

[0026] 100. Energy storage containers;

[0027] 101. Power distribution switchgear;

[0028] 1. Cabinet body; 11. First cabinet door; 12. Second cabinet door; 13. Frame structure; 14. Fasteners; 2. High-voltage box assembly; 3. Power distribution busbar assembly; 31. Busbar assembly; 32. AC incoming line assembly; 33. Power supply; 34. Fire controller; 4. Energy storage liquid cooling box; 5. First chamber; 6. Second chamber; 7. Cooling device; 8. Sealing components; 9. Support frame; 10. Base. Detailed Implementation

[0029] The following is a more detailed description of a power distribution combiner cabinet and energy storage container of the present invention with reference to the accompanying drawings, which illustrate preferred embodiments of the present invention. It should be understood that those skilled in the art can modify the present invention described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the present invention.

[0030] In the description of this specification, terms such as "one embodiment" or "some embodiments" mean that one or more embodiments of this specification include a particular feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized.

[0031] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In existing technologies, the high-voltage box of an energy storage container is typically placed together with the battery pack in the battery compartment, resulting in reduced space utilization and hindering the improvement of battery energy density. Operators must frequently open the battery compartment door to maintain the high-voltage box, posing safety hazards and being ergonomically inefficient. During system operation, heat generated by the high-voltage box accumulates within the sealed compartment, easily leading to localized overheating and increasing the risk of battery thermal runaway. Traditional solutions require a separate isolating switch, increasing overall cost.

[0033] To address these issues, the R&D team analyzed the situation and found that the mixed installation of high-voltage boxes and battery packs was the main cause of space waste and maintenance difficulties. They began exploring the possibility of separate equipment layouts. Considering the different heat dissipation requirements of electrical equipment and energy storage units, they attempted to integrate the high-voltage system into a separate cabinet. By studying the structural characteristics of the container's end face, they discovered that the liquid cooling system's installation location had potential for space expansion. Combining chamber partitioning and modular design concepts, they gradually developed a technical solution that integrates high-voltage components and power distribution units into a dedicated cabinet.

[0034] Therefore, this utility model proposes a power distribution junction box 101 that can be applied to an energy storage container 100. The power distribution junction box 101 according to an embodiment of this utility model is described below with reference to the accompanying drawings.

[0035] According to the power distribution combiner cabinet 101 of this utility model embodiment, as Figures 1-3 As shown, the container includes a cabinet 1, a high-voltage box assembly 2, a power distribution busbar assembly 3, and an energy storage liquid-cooled tank 4. The cabinet 1 is installed inside the energy storage liquid-cooled tank 4 of the energy storage container 100. The energy storage liquid-cooled tank 4 is installed in the energy storage container 100 along a first direction (e.g., Figure 2 On one end face of the cabinet (shown in the Y direction), the interior of the cabinet 1 along the second direction (as shown in the Y direction) Figure 2The structure (in the X direction) is divided into a first chamber 5 and a second chamber 6. The high-voltage box assembly 2 is installed in the first chamber 5, and the power distribution bus assembly 3 is installed in the second chamber 6.

[0036] The cabinet 1 refers to a metal shell with electromagnetic shielding, specifically formed by welding galvanized steel sheets, used to support high-voltage equipment and power distribution units. The high-voltage box assembly 2 refers to an electrical module containing circuit breakers and contactors, specifically implemented using a modular assembly structure, with its installation position maintaining a safe distance from the battery compartment. The power distribution busbar assembly 3 refers to a device integrating current monitoring and distribution functions, specifically implemented by connecting multiple circuit breakers with copper busbars, used to optimize power transmission paths. The energy storage liquid-cooled box 4 refers to a box structure integrating cooling pipes, specifically implemented by embedding circulating pipes within an aluminum cavity, using a liquid cooling medium to remove heat from the equipment. The first direction refers to the length extension direction of the container, specifically the front end of the container, used to match the installation requirements of the liquid cooling system. The second direction refers to a vertical or horizontal direction perpendicular to the first direction, specifically the left-right partitioning method inside the cabinet 1, used to achieve functional area isolation.

[0037] Specifically, the cabinet 1 is embedded inside the energy storage liquid cooling box 4 and is fixed to the preset installation position on the end face of the container by bolts, forming an equipment compartment independent of the battery compartment. The upper and lower end faces of the cabinet 1 are provided with fasteners 14, and the cabinet 1 is installed in the energy storage liquid cooling box 4 through the fasteners 14.

[0038] Specifically, the cabinet 1 has a frame structure 13 that divides the interior of the cabinet 1 into two independent chambers along the second direction. The first chamber 5 houses the high-voltage switchgear, and the second chamber 6 houses the power distribution control unit. The cooling pipes inside the energy storage liquid cooling tank 4 are in contact with the heat-conducting layer of the back panel of the cabinet 1, continuously absorbing the heat generated by the equipment operation. Operators can directly access the high-voltage box assembly 2 from outside the equipment compartment through an independent cabinet door without entering the battery operation area. The power distribution busbar assembly 3 is connected to the high-voltage box using a top-mounted wiring method to reduce cable crossing interference.

[0039] Compared to existing technologies, traditional solutions place the high-voltage box inside the battery compartment, resulting in reduced space utilization. This invention frees up battery placement space through the independent cabinet design. Existing technologies require opening the battery compartment door for maintenance; this invention achieves zoned maintenance through chamber partitioning. Traditional heat dissipation relies on the battery compartment air conditioning system; this invention utilizes a liquid-cooled box for targeted thermal management. Existing technologies require additional isolation switches; this invention reduces redundant components through the integrated design of the cabinet 1.

[0040] Through the above technical solutions, this utility model achieves physical isolation between the high-voltage equipment and the battery compartment, effectively improving the energy density of the energy storage unit. The independent chamber design makes equipment maintenance and operation more ergonomic, reducing operational risks. The integrated installation of the liquid cooling system with the cabinet 1 significantly improves the heat dissipation efficiency of the high-voltage equipment and suppresses localized temperature rise. The modular layout reduces electrical connection complexity and lowers the overall system manufacturing cost.

[0041] In some embodiments of this utility model, such as Figure 1 , Figure 2 As shown, it also includes a base 10, which is installed at the bottom of the cabinet 1 and abuts against the energy storage liquid cooling tank 4. Specifically, by setting the base 10 at the bottom of the cabinet 1 to support the cabinet 1, the weight of the cabinet 1 and the device installed in the cabinet 1 can be evenly distributed on the base 10 and the bottom wall of the energy storage liquid cooling tank 4, avoiding stress concentration that could damage the bottom wall of the cabinet 1 and improving the overall structural stability of the cabinet 1.

[0042] In some embodiments of this utility model, such as Figure 1 As shown, the power distribution busbar assembly 3 includes a busbar assembly 31, which is installed in the second chamber 6, located on the bottom wall of the cabinet 1 and away from the side wall of the cabinet 1.

[0043] The busbar assembly 31 refers to a modular electrical unit used to integrate and distribute power transmission paths. Specifically, it can be implemented using an integrated structure that includes circuit breakers, busbars, and terminals. Its location on the bottom wall of the second chamber 6 away from the side walls can optimize the electrical connection path.

[0044] The bottom wall refers to the load-bearing plane inside the cabinet 1 that is parallel to the ground. Specifically, it can be implemented using a metal plate structure with a shock-absorbing support frame 9, providing a stable installation foundation for the busbar assembly 31.

[0045] Among them, "away from the side wall" refers to a layout that maintains a preset distance from the inner vertical surface of the cabinet 1. This can be achieved through an installation positioning method that reserves a heat dissipation gap, ensuring that an airflow circulation channel is formed around the components.

[0046] Specifically, the combiner assembly 31, fixed to the bottom wall of the second chamber 6, integrates the high-voltage box (traditionally located separately in the battery compartment) and the combiner disconnect switch (traditionally located separately in the electrical compartment) into the same chamber, eliminating spatial redundancy caused by the dispersed arrangement of equipment. The installation position on the bottom wall allows the operating interface to be at a natural operating height while standing, eliminating the need for bending over or climbing for maintenance. The layout away from the side walls creates a heat dissipation duct between the combiner assembly 31 and the inner wall of the cabinet 1, which, together with the exhaust vent at the top of the chamber, enables directional heat dissipation. Simultaneously, this position avoids cable channels in the side wall area, allowing cables connecting to the energy storage converter to run along the side walls, preventing interference with the operating area.

[0047] Compared to existing technologies, traditional solutions place the high-voltage box in the battery compartment, leading to the risk of thermal runaway, while separate placement of the busbar disconnect switch in the electrical compartment requires additional space. This invention integrates the busbar assembly 31 and the high-voltage box into the same power distribution cabinet 101, eliminating the need for high-voltage equipment within the battery compartment and reducing the number of heat sources. Traditional split layouts require separate opening of the battery compartment and electrical compartment for maintenance; this invention achieves unified operation within a single cabinet 1 through centralized arrangement, reducing the maintenance process to a single opening and closing operation. Traditional top- or bottom-mounted busbar devices require adjusting the operator's posture; this invention uses bottom wall positioning to place the operating interface at an ergonomic height, reducing operator fatigue.

[0048] Through the above technical solutions, this utility model solves the problem of fragmented internal space caused by the separate arrangement of the high-voltage box and the busbar disconnect switch, reduces the equipment footprint through component integration; eliminates the multi-point heat dissipation requirements caused by the dispersion of high-voltage equipment, reduces local temperature rise through directional air duct design; optimizes the operation flow, enabling maintenance actions to be completed in a single chamber; avoids the impact of cross-regional cable layout on operational safety, and improves the reliability of equipment operation.

[0049] In some embodiments of this utility model, such as Figure 1 As shown, the power distribution bus assembly 3 also includes an AC incoming line assembly 32, which is installed in the second chamber 6, located on the bottom wall of the cabinet 1 and close to the side wall of the cabinet 1.

[0050] The AC input component 32 refers to the electrical unit used to introduce the external AC power supply 33. Specifically, it can be implemented using a modular structure with terminals and circuit breakers. Its input end is connected to the external power supply system via a cable, and its output end forms an electrical path with the busbar component 31.

[0051] The side wall refers to the end face structure of the cabinet 1 along the first direction, which can be implemented by a metal plate with cable through holes, so as to facilitate the access of external cables and form an operating surface.

[0052] Specifically, the AC incoming line assembly 32 is positioned on the bottom wall of the second chamber 6 near the side wall, aligning its operating interface with the cable perforations on the side wall. Operators can perform terminal maintenance or circuit breaker status checks simply through the opening in the side wall without entering the cabinet 1. The bottom wall's support structure ensures the assembly remains stable under vibration, and the proximity to the side wall shortens the path for external AC cables, reducing the risk of insulation wear due to line bending. Simultaneously, this layout creates a horizontal gap between the AC incoming line assembly 32 and the busbar assembly 31, preventing cross-interference between high-voltage and low-voltage control lines.

[0053] Compared to existing technologies, in traditional solutions, the AC incoming line components are typically installed in the middle or top of the cabinet 1, requiring the removal of internal baffles or climbing for operation. This invention fixes the AC incoming line assembly 32 to the bottom wall area near the side wall, directly exposing the maintenance interface to the external operable area of ​​the cabinet 1, allowing routine maintenance to be completed without disassembling other components. Furthermore, the bottom wall mounting method aligns the component's heat dissipation surface with the ventilation holes at the bottom of the cabinet 1, improving heat dissipation efficiency, whereas traditional top mounting tends to cause hot air to accumulate in the upper part of the chamber.

[0054] Through the above technical solution, this utility model solves the problem of obstructed maintenance channels for internal components of the power distribution junction box 101, enabling daily operation of the AC power supply 33 access component to be completed directly on the side of the cabinet 1, reducing maintenance intensity and shortening fault handling time. At the same time, by optimizing the cable layout, the risk of electrical interference is reduced, and the stability of system operation is improved.

[0055] In some embodiments of this utility model, such as Figure 1 As shown, the power distribution bus assembly 3 also includes a power supply 33, which is an uninterruptible power supply. The power supply 33 is installed in the second chamber 6, located on the top wall of the cabinet 1 and close to the side wall of the cabinet 1.

[0056] The uninterruptible power supply 33 refers to an energy storage power supply device that can maintain continuous power output when the external power supply is interrupted. Specifically, it can be implemented using a modular uninterruptible power supply 33 system, which achieves zero-switching-time power supply guarantee through a double-conversion online topology structure.

[0057] The second chamber 6 refers to the dedicated installation space for the power distribution and busbar assembly 3 formed by the internal partition of the cabinet 1. Specifically, it can be achieved by dividing the cabinet 1 into independent chambers along the vertical direction using metal partitions. This division method enables physical isolation between high-voltage components and low-voltage components.

[0058] The location on the top wall and near the side wall refers to the installation point at a certain distance from the edge of the side wall in the top area of ​​the cabinet 1. Specifically, the power supply 33 can be fixed in the top third area of ​​the cabinet near the side wall by installing the support frame 9 on the guide rail. This area maintains a safe distance from the bottom cable channel.

[0059] Specifically, the uninterruptible power supply 33 is integrated into the top side wall area of ​​the second chamber 6 of the power distribution busbar assembly 3. Maintenance personnel can directly access the equipment through the side inspection port without fully opening the cabinet door. The top wall mounting method creates vertical spatial isolation between the power supply 33 body and the bottom cable routing layer, preventing cable laying from obstructing the equipment maintenance path. This location is upstream of the natural convection heat dissipation path of the cabinet 1. Combined with the forced circulation heat dissipation system of the energy storage liquid cooling box 4, the heat generated by the operation of the power supply 33 can be preferentially discharged through the top vent, preventing hot air from stagnating inside the chamber.

[0060] Compared to existing technologies, the uninterruptible power supply 33 of a conventional energy storage container 100 is typically integrated at the bottom of a distribution cabinet or installed independently in the battery compartment. Maintenance requires fully opening the cabinet door and bending over, and the bottom mounting location is easily obstructed by cable layers, leading to reduced heat dissipation efficiency. This invention, through spatial layout reconfiguration, enables the power supply 33 to simultaneously meet the dual requirements of operational accessibility and heat dissipation priority.

[0061] Through the above technical solution, this utility model solves the problems of difficult maintenance and operation and excessive local temperature rise caused by improper installation position of the power supply 33 equipment, realizes uninterrupted accessibility maintenance and efficient heat dissipation optimization of the power supply 33, avoids the risk of system power supply interruption caused by equipment overheating, and improves the power supply reliability of the energy storage container 100 under extreme working conditions.

[0062] In some embodiments of this utility model, such as Figure 1 As shown, the power distribution bus assembly 3 also includes a fire controller 34, which is installed in the second chamber 6, located on the top wall of the cabinet 1 and away from the side wall of the cabinet 1.

[0063] The fire controller 34 refers to the device used to monitor fire and trigger the fire extinguishing device. Specifically, it can be an integrated controller with a temperature sensor and a gas injection module, connected to the smoke detector and fire extinguishing pipeline via cables. The second chamber 6 refers to the independent space formed by the internal partition of the cabinet 1. Specifically, this can be achieved by dividing the cabinet 1 vertically into two areas using a metal partition, providing physical isolation between the power distribution equipment and the fire-fighting equipment. The top wall refers to the upper surface area inside the cabinet 1, specifically formed by welding or bolting metal plates to create a supporting plane. This location facilitates heat dissipation through natural heat convection. "Away from the side wall" means maintaining a predetermined distance from the vertical edge of the cabinet 1. This can be achieved by measuring the offset of the mounting holes using measuring tools. This design prevents interference with the equipment from cabinet door opening and closing or external vibrations.

[0064] Specifically, the fire controller 34 is positioned on the top wall of the second chamber 6, away from the side walls, thus spatially separating it from the AC input module and the power supply module 33 in the power distribution assembly 3. This top-wall mounting keeps the fire controller 34 away from potential heat or condensation buildup at the bottom, while also utilizing the natural upward flow of air to accelerate heat dissipation from the controller housing. The away-from-side-wall layout avoids spatial conflicts with the cable trays or maintenance passages on the side of the cabinet 1, providing sufficient operating space for maintenance personnel. The independent installation position of the fire controller 34 also reduces the risk of electromagnetic interference with adjacent equipment, ensuring the stability of fire monitoring signal transmission.

[0065] Compared to existing technologies, the fire controller 34 of a conventional energy storage container 100 is typically located near the bottom or side wall of the battery compartment, often shared with the high-voltage box. This necessitates frequent opening of the battery compartment door during maintenance, and the equipment's heat dissipation is limited by the confined space. This invention integrates the fire controller 34 into the top of the second chamber 6 of the power distribution combiner cabinet 101, enabling rapid maintenance through an independent maintenance channel in the power distribution system. Simultaneously, the heat dissipation advantage of the top wall avoids the risk of false triggering due to overheating.

[0066] Through the above technical solution, this utility model solves the problems of low maintenance efficiency and poor heat dissipation caused by improper installation location of the fire controller 34. The spatial isolation between the fire controller 34 and the power distribution equipment reduces the probability of misoperation, the top wall installation location optimizes the heat dissipation path, and the design away from the side wall avoids the impact of deformation or vibration of the cabinet 1 on the controller's fixing structure, thereby improving the reliability of equipment operation and extending its service life.

[0067] In some embodiments of this utility model, such as Figure 1 , Figure 2As shown, it also includes a first cabinet door 11 and a second cabinet door 12. The cabinet body 1 has an opening in the first direction. The first cabinet door 11 and the second cabinet door 12 are installed at the opening. The first cabinet door 11 enables the opening and closing of the first chamber 5, and the second cabinet door 12 enables the opening and closing of the second chamber 6.

[0068] The first direction refers to the plane containing the axis along the length of the cabinet 1. Specifically, the opening arrangement can be achieved by welding a rectangular through-hole structure on the side of the cabinet 1. The size of the opening, in conjunction with the double cabinet doors, forms an independent opening and closing interface, thus creating physical isolation between the chambers.

[0069] The first cabinet door 11 refers to a metal door panel covering the passage of the first chamber 5, which can be installed in the edge area of ​​the opening using a hinged connection. A locking mechanism is provided on the inside of the door panel, which achieves a sealed closed state by engaging with the frame of the cabinet 1. When the door panel is opened, only the chamber where the high-voltage box assembly 2 is located is exposed.

[0070] The second cabinet door 12 refers to the metal door panel covering the passage of the second chamber 6, which can be installed on the other side of the opening using a sliding rail structure. The door panel surface is provided with an observation window and ventilation holes. When opened, it only exposes the area where the power distribution busbar assembly 3 is located. When closed, it forms an airtight structure together with the sealing element 8.

[0071] Specifically, when maintenance of the high-voltage box assembly 2 is required, only the first cabinet door 11 needs to be opened to access the equipment inside the first chamber 5. At this time, the second cabinet door 12 remains closed to maintain the sealed environment of the second chamber 6. Similarly, maintenance of the power distribution busbar assembly 3 only requires opening the second cabinet door 12. The two cabinet doors adopt different opening methods. The first cabinet door 11 adopts a side-opening structure to facilitate high-voltage equipment maintenance operations, while the second cabinet door 12 adopts an upward-opening structure to adapt to the longitudinal layout of the power distribution module. The limiting device set at the opening can prevent both cabinet doors from being opened at the same time, avoiding simultaneous exposure of the two chambers and causing heat exchange.

[0072] Compared to existing technologies, the traditional energy storage container 100 uses an integrated cabinet door structure, requiring full opening of the door for maintenance operations, resulting in simultaneous exposure of two chambers, heat loss, and the risk of accidental activation. This invention achieves independent area control through a split cabinet door structure, eliminating the need to fully open the cabinet 1 during operation, effectively reducing the heat loss area by approximately 60%. In existing technologies, operators must bend over or climb to reach the equipment. This invention configures different opening methods based on the different layouts of the chambers, making the door panel operating height suitable for a standing posture, thus reducing the intensity of maintenance work.

[0073] Through the above technical solution, this utility model enables independent maintenance operations of the high-voltage box and power distribution equipment, avoiding energy loss caused by exposure of non-operational areas. The split cabinet door structure confines heat dissipation to the actual operating range, reducing ineffective heat dissipation area compared to a single-opening method. Different door opening directions adapt to different equipment layouts, ensuring the operating interface height matches the natural posture of the human body, eliminating unsafe working postures such as bending over and climbing. The physical isolation of the double cabinet doors prevents maintenance tools from accidentally entering non-operational areas, reducing the risk of equipment damage.

[0074] In some embodiments of this utility model, such as Figure 1 As shown, it also includes a cooling device 7, which is installed on one end face of the second cabinet door 12 near the second chamber 6 to cool the inside of the cabinet body 1.

[0075] The cooling device 7 refers to a device used to absorb and remove heat. Specifically, it can be implemented by using an air conditioner, a semiconductor refrigeration chip, or a liquid cooling circulation system. After being integrated with the cabinet door, it can directly dissipate heat from the power distribution busbar 3 in the second chamber 6.

[0076] Specifically, the cooling device 7 dissipates heat from the second chamber 6 through contact heat conduction or forced convection. Since the busbar components and AC incoming line components in the power distribution busbar assembly 3 generate heat during operation, the cooling device 7 is positioned adjacent to the second chamber 6. The heat is quickly transferred to the working surface of the cooling device 7 through the cabinet door. The installation position of the cooling device 7 spatially corresponds to the heat-generating components inside the second chamber 6; for example, the air duct of the cooling device 7 can cover the installation area of ​​the busbar assembly 31. When the second cabinet door 12 is opened, the cooling device 7 moves outward with the door, allowing direct inspection or replacement of the heat dissipation module of the cooling device 7 without disassembling the internal structure of the cabinet 1.

[0077] Compared to existing technologies, in traditional solutions, cooling devices are typically located independently outside the cabinet 1 or occupy internal cavity space, resulting in a prolonged heat dissipation path or compressed layout space. This invention shortens the heat dissipation path by integrating the cooling device 7 inside the cabinet door, eliminating the need for additional external heat dissipation structures. Furthermore, existing technologies require disassembling the cabinet 1 or interrupting system operation to maintain the cooling device, while this invention enables rapid maintenance of the cooling device 7 through an openable cabinet door design.

[0078] In some embodiments of this utility model, such as Figure 1 , Figure 2As shown, it also includes a sealing element 8, which is installed on the cabinet 1 and located at the opening, and the sealing element 8 cooperates with the first cabinet door 11 and the second cabinet door 12 to seal the cabinet 1.

[0079] The sealing element 8 refers to an elastic material structure, such as silicone or rubber sealing strip, set at the edge of the opening. It fills the gap between the cabinet body 1 and the cabinet door by deforming under pressure, thus blocking the intrusion of external dust and moisture.

[0080] The opening refers to the through structure provided by the cabinet 1 along the first direction, specifically located at the front end of the cabinet 1, to facilitate the opening and closing of the cabinet door. The size of the opening matches the coverage area of ​​the cabinet door to achieve complete closure.

[0081] The sealing is achieved by pressing the sealing element 8 to form a physical barrier when the cabinet door is closed. This can be achieved by embedding a sealing strip in a groove on the edge of the door frame, or by using a pressing mechanism on the inside of the cabinet door to contact the sealing element 8, ensuring that the sealing element 8 is evenly compressed when closed.

[0082] Specifically, the sealing element 8 is arranged circumferentially along the opening and is compressed when the cabinet door is closed, forming a continuous sealing interface. The first cabinet door 11 and the second cabinet door 12 independently control the sealing state of their respective chambers. When maintenance of the second chamber 6 is required, only the second cabinet door 12 is opened, while the first cabinet door 11 remains closed, and the sealing performance of the first chamber 5 is unaffected. The installation position of the sealing element 8 at the opening is designed, for example, using a segmented layout, so that the contact surface between the sealing element 8 and the door body is always within the effective coverage range during the opening and closing of the cabinet door, avoiding sealing failure due to local deformation.

[0083] Compared to existing technologies, the high-voltage box and combiner cabinet of the existing energy storage container 100 typically adopt a single-door structure. Maintenance requires opening the entire container 1, leading to repeated pressure on the sealing interface and accelerating the aging of the seals 8. Furthermore, existing sealing solutions do not consider the collaborative sealing requirements of split doors, making it easy for contaminants to accumulate in the gaps around the door edges. This invention, through a combination design of split doors and seals 8, maintains independent operability while utilizing the dual cooperation of seals 8 and double doors to reduce the impact of the external environment on the interior of the container 1. Moreover, the layout of the seals 8 can adapt to high-frequency partial opening scenarios, extending their service life.

[0084] Through the above technical solution, this utility model effectively prevents external dust, moisture, and other pollutants from entering the cabinet 1, avoiding the risk of reduced insulation performance or short circuits in the high-voltage box assembly 2 and the power distribution bus assembly 3 due to environmental corrosion. During maintenance, the sealed state of non-operating areas is maintained, reducing the probability of overall seal failure due to frequent opening. In addition, the design of the split cabinet door and the sealing element 8 maintains the airtightness while reducing temperature fluctuations inside the cabinet 1, which is beneficial to improving heat dissipation efficiency and further reducing safety hazards caused by local overheating of the equipment.

[0085] In some embodiments of this utility model, such as Figure 1 As shown, it also includes a support frame 9, through which the high-voltage box assembly 2 is installed in the first chamber 5.

[0086] The support frame 9 refers to the support structure used to support and fix the high-voltage box assembly 2. Specifically, it can be implemented by welding or bolting metal profiles, for example, a frame structure composed of aluminum alloy beams and vertical columns. The support frame 9 suspends the high-voltage box assembly 2 inside the first chamber 5 through a mechanical connection, avoiding direct contact with the side wall of the cabinet 1. The first chamber 5 refers to an independent space formed by dividing the interior of the cabinet 1 along the second direction. Specifically, it can be implemented by dividing the interior of the cabinet 1 into two areas using a partition. This chamber is used to centrally accommodate the high-voltage box assembly 2 and its auxiliary equipment, forming an independent installation environment isolated from the battery compartment.

[0087] Specifically, the support frame 9 is rigidly connected to the inner wall of the first chamber 5 by bolts, and the high-voltage box assembly 2 is fixed on the bearing plane of the support frame 9. During installation, the high-voltage box assembly 2 can be pre-assembled onto the support frame 9 and then pushed into the first chamber 5 as a whole, and the installation is completed by positioning with guide rails. An insulating gasket can be placed between the bearing plane of the support frame 9 and the bottom surface of the high-voltage box assembly 2 to avoid direct contact and potential difference. When maintenance of the high-voltage box assembly 2 is required, the operator can directly access the high-voltage box assembly 2 on the support frame 9 through the first cabinet door 11 without entering the battery compartment. The gap formed between the support frame 9 and the cabinet 1 can serve as a heat dissipation channel, and heat is conducted through the inner wall of the first chamber 5 to the cooling medium of the energy storage liquid cooling box 4.

[0088] Compared to existing technologies, traditional solutions disperse the high-voltage box assembly 2 within the battery compartment, resulting in reduced space utilization and frequent door opening for maintenance. This invention integrates the high-voltage box assembly 2 into the first chamber 5 of the power distribution junction box 101 via the support frame 9, forming a modular structure. In existing technologies, the heat generated by the high-voltage box assembly 2 remains trapped within the battery compartment, while this invention establishes a heat conduction path through the contact surface between the support frame 9 and the cabinet 1, directing heat transfer to the energy storage liquid cooling box 4. Traditionally, the installation position of the high-voltage box assembly 2 is limited by the battery pack layout; this invention achieves standardized positioning of the installation location through the rigid fixing method of the support frame 9.

[0089] Through the above technical solution, this utility model solves the problem of reduced energy density caused by the high-voltage box assembly 2 occupying battery compartment space, and releases the effective volume of the battery compartment through centralized installation. The convenience of maintenance operations is improved; operators only need to open the door of the power distribution combiner cabinet 101 to access the high-voltage box assembly 2, avoiding the safety risks of entering the sealed battery compartment in traditional solutions. The optimized heat conduction path reduces the possibility of localized temperature accumulation in the high-voltage box assembly 2, thereby reducing safety hazards caused by thermal runaway.

[0090] This utility model also provides an energy storage container 100, which includes the aforementioned power distribution combiner cabinet 101.

[0091] The power distribution combiner cabinet 101 refers to a device that integrates the high-voltage box assembly 2 and the power distribution combiner assembly 3 within the cabinet 1. Specifically, it can be implemented using a compartmentalized structure, with the first compartment 5 for installing the high-voltage box assembly 2 and the second compartment 6 for installing the power distribution combiner assembly 3. This structure avoids mutual interference between high-voltage arcs and power distribution equipment through functional partitioning. Battery electrical connection refers to the energy transfer between the energy storage unit and the power distribution combiner cabinet 101 via conductive lines, specifically using copper busbars or cables to ensure efficient and safe power transmission.

[0092] Specifically, the power distribution combiner cabinet 101 is integrated inside the energy storage liquid-cooled box 4 of the energy storage container 100. The cabinet 1 is divided into two independent chambers. The high-voltage box assembly 2 is fixed in the first chamber 5, and the power distribution combiner assembly 3 is distributed in the second chamber 6. Batteries are arranged in the battery compartment of the energy storage container 100 and connected to the combiner assembly 31 of the power distribution combiner cabinet 101 via wires. During operation, high-voltage electricity is processed by the high-voltage box assembly 2 and then transmitted to the power distribution combiner assembly 3. The combined electrical energy is output externally through the AC input assembly 32. The cooling device 7 of the power distribution combiner cabinet 101 is installed inside the second cabinet door 12, forming an independent air duct to dissipate heat from the equipment inside the cabinet. The fire controller 34 and the uninterruptible power supply 33 are respectively arranged on both sides of the top wall of the second chamber 6, forming a dual redundancy safety protection mechanism. The cabinet doors adopt a split design. The first cabinet door 11 corresponds to the high-voltage box maintenance operation interface, and the second cabinet door 12 corresponds to the power distribution system operation interface. The two are protected and isolated by the sealing element 8.

[0093] Compared to existing technologies, which place the high-voltage box separately in the battery compartment, occupying battery space and requiring frequent opening of the battery compartment door for maintenance, this invention integrates the high-voltage box into the power distribution unit 101, detaching it from the battery compartment area and reducing battery compartment space occupancy. Existing technologies have dispersed isolating switches, resulting in an ergonomically unfriendly operating interface. This invention, through the compartmentalized layout of the power distribution unit 101, creates independent functional modules for the high-voltage operating area and the power distribution operating area, both ergonomically designed for comfortable operation. Existing technologies rely on natural heat dissipation from the battery compartment, which can easily lead to localized high temperatures. This invention, however, utilizes a dedicated cooling device 7 inside the cabinet 1 to achieve directional heat dissipation, preventing heat accumulation in the enclosed space.

[0094] Through the above technical solutions, this utility model reduces the space occupied by high-voltage equipment in the battery compartment and increases the energy density of the energy storage unit; the functional zoning and independent heat dissipation design effectively suppress the temperature rise of the equipment during operation; the split cabinet door structure ensures that high-voltage operation and power distribution maintenance do not interfere with each other, reducing the frequency of opening the battery compartment during maintenance; the integrated layout reduces cable length and connection nodes, reducing system resistance loss and failure probability.

[0095] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A power distribution combiner cabinet, wherein the power distribution combiner cabinet is suitable for energy storage containers, characterized in that, include: The container includes a cabinet, a high-voltage box assembly, a power distribution busbar assembly, and an energy storage liquid-cooled box. The cabinet is embedded in the energy storage liquid-cooled box, which is installed on one end face of the container along a first direction. The interior of the cabinet is divided into a first chamber and a second chamber along a second direction. The high-voltage box assembly is installed in the first chamber, and the power distribution busbar assembly is installed in the second chamber.

2. The power distribution combiner cabinet according to claim 1, characterized in that, The power distribution busbar assembly includes a busbar assembly, which is installed in the second chamber, located on the bottom wall of the cabinet and away from the side wall of the cabinet.

3. The power distribution combiner cabinet according to claim 1, characterized in that, The power distribution busbar assembly also includes an AC incoming line assembly, which is installed in the second chamber, located on the bottom wall of the cabinet and close to the side wall of the cabinet.

4. The power distribution combiner cabinet according to claim 1, characterized in that, The power distribution bus assembly also includes a power supply, which is an uninterruptible power supply. The power supply is installed in the second chamber, located on the top wall of the cabinet and close to the side wall of the cabinet.

5. The power distribution combiner cabinet according to claim 1, characterized in that, The power distribution bus assembly also includes a fire controller, which is installed in the second chamber, located on the top wall of the cabinet and away from the side wall of the cabinet.

6. The power distribution combiner cabinet according to claim 1, characterized in that, It also includes a first cabinet door and a second cabinet door. The cabinet body has an opening in a first direction. The first cabinet door and the second cabinet door are installed at the opening. The first cabinet door enables the opening and closing of the first chamber, and the second cabinet door enables the opening and closing of the second chamber.

7. The power distribution combiner cabinet according to claim 6, characterized in that, It also includes a cooling device, which is installed on one end face of the second cabinet door near the second chamber to cool the interior of the cabinet.

8. The power distribution combiner cabinet according to claim 6, characterized in that, It also includes a sealing element, which is installed on the cabinet body and located at the opening, and the sealing element cooperates with the first cabinet door and the second cabinet door to seal the cabinet body.

9. The power distribution combiner cabinet according to claim 1, characterized in that, It also includes a support frame, through which the high-voltage box assembly is mounted in the first chamber.

10. An energy storage container, characterized in that, It includes a battery and a power distribution combiner cabinet as described in any one of claims 1 to 9, wherein the battery is electrically connected to the power distribution combiner cabinet.

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