A high-pressure box for container energy storage

Abstract

The utility model discloses a kind of high-pressure box for container energy storage, it is related to energy storage high-pressure box technical field, including shell, the shell inside is divided into power device area, control module area and sensor area by partition, shell joint is set rubber sealing strip, the lateral wall of shell is provided with heat dissipation port, dust screen is installed at heat dissipation port, one end of the shell is fixedly provided with connecting end plate, the connecting end plate is installed with multiple waterproof joints for external interface, the utility model is optimized heat dissipation channel by modularization design, IP54 protection structure, integrated control module and, solve the existing high-pressure box heat dissipation insufficient, protection grade low, maintenance difficult etc.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage energy storage boxes, and in particular to a high-voltage box for containerized energy storage. Background Technology

[0002] In the field of new energy storage, containerized energy storage systems are widely used in grid peak shaving and renewable energy grid connection scenarios due to their modularity, high integration, and ease of transportation. Among these systems, the high-voltage control box, as the core equipment connecting the battery cluster and the energy storage converter, undertakes the functions of high-voltage power circuit management, status monitoring, and protection. However, traditional high-voltage control boxes still have the following technical shortcomings under the special operating conditions of liquid-cooled containerized energy storage systems: Most existing high-voltage control boxes use natural heat dissipation, relying on passive cooling through the heat sink fins on the outer casing. In liquid-cooled systems, power devices (such as circuit breakers and contactors) generate a large amount of heat during high-rate charging and discharging of battery clusters. Traditional designs, due to limited heat dissipation area and lack of forced air cooling measures, are prone to localized overheating, accelerating component aging and even triggering the risk of thermal runaway.

[0003] Containerized energy storage systems are often deployed outdoors and must withstand harsh conditions such as dust, humidity, and salt spray. Traditional high-voltage boxes typically have a protection rating of IP40 or lower, poor sealing at the seams of the outer shell, lack of dustproof structures at the heat dissipation vents, and a lack of waterproof design for external interfaces. This allows dust and moisture to easily penetrate the interior, causing electrical short circuits or corrosion problems, which seriously affect the reliability of the equipment. Utility Model Content

[0004] This utility model provides a high-voltage box for container energy storage, which can solve the problems of insufficient heat dissipation, low protection level and difficult maintenance of existing high-voltage boxes.

[0005] The objective of this utility model can be achieved through the following technical solutions: A high-voltage container for containerized energy storage includes an outer shell. The interior of the outer shell is divided into a power device area, a control module area, and a sensor area by a partition. Rubber sealing strips are provided at the joints of the outer shell. Heat dissipation vents are provided on the side walls of the outer shell, and dustproof nets are installed at the heat dissipation vents. A connecting end plate is fixedly provided at one end of the outer shell, and multiple waterproof connectors for external interfaces are installed at the connecting end plate.

[0006] As a further embodiment of this utility model: the power device area is equipped with circuit breakers, contactors and fuses, the control module area is equipped with a battery cluster control and management module and a switching power supply, and the sensor area is equipped with current sensors and voltage detection modules.

[0007] As a further embodiment of this utility model: heat dissipation fins are provided on the inner surface of the outer shell, and a vertical air duct is formed inside, with air entering from the bottom and exiting from the top. A heat insulation plate is provided between the power device area and the control module area.

[0008] As a further embodiment of this utility model: the battery cluster control and management module integrates battery cluster voltage / current acquisition, contactor control, protection logic and communication management functions, and is connected to external systems through LAN, CAN and RS-485 buses.

[0009] As a further embodiment of this utility model: the battery cluster control and management module integrates a circulating current control circuit, which is installed close to the current sensor and its output signal is connected to the contactor coil.

[0010] As a further embodiment of this utility model: an openable maintenance door is provided on the outer casing, and the names and functions of each component are marked inside the outer casing.

[0011] As a further embodiment of this utility model: the fuse is connected in series in the main circuit with a rated current ≤250A. The battery cluster control and management module monitors the total voltage of the battery cluster, and triggers the contactor to disconnect when the total voltage ≥1500V.

[0012] As a further embodiment of this utility model: the connection end plate is provided with an emergency stop knob, supports AC~220V or DC-24V power supply, and draws power from the battery pack through a DC / DC converter.

[0013] As a further embodiment of this utility model: a cooling fan is installed in the vertical air duct, and the start-stop logic of the cooling fan is: it starts when the temperature inside the casing is >45℃ and stops when it is ≤40℃.

[0014] As a further embodiment of this utility model: mounting plates are fixedly provided on both sides of the connecting end plate, and two sets of lifting handles are provided on the connecting end plate.

[0015] The beneficial effects of this utility model are: (1) Through modular design, IP54 protection structure, integrated control module and optimized heat dissipation channel, the problems of insufficient heat dissipation, low protection level and difficult maintenance of existing high-voltage boxes are solved, and it is suitable for the high safety and high reliability requirements of container energy storage system.

[0016] (2) The power device area, control module area and sensor area are installed independently to reduce electromagnetic interference and improve space utilization; IP54 protection structure: rubber sealing strip, dustproof net and waterproof joint are used to block the intrusion path of dust and water vapor.

[0017] (3) Combining natural heat dissipation fins with forced air cooling ducts, and using heat insulation boards to isolate high-temperature areas, ensures stable operation of the equipment at an ambient temperature of 45℃; Integrated control module: Integrating functions such as circulating current control, contactor drive, and multi-bus communication into the battery cluster control and management module, shortening the signal transmission distance and improving anti-interference capability. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a three-dimensional structural diagram of a high-voltage box for container energy storage according to this utility model; Figure 2 This is a schematic diagram of the internal structure of the outer shell of a high-voltage box for container energy storage according to this utility model.

[0020] Explanation of reference numerals in the attached figures: 1. Housing; 101. Connecting end plate; 102. Mounting support plate; 103. Lifting handle; 2. Partition plate; 3. Power device area; 31. Circuit breaker; 32. Contactor; 33. Fuse; 4. Control module area; 41. Battery cluster control and management module; 42. Switching power supply; 5. Sensor area; 51. Current sensor; 52. Voltage detection module; 6. Rubber sealing strip; 8. Dustproof net; 9. Waterproof connector; 11. Heat sink fins; 12. Vertical air duct; 13. Heat insulation board; 15. Maintenance door; 16. Emergency stop button knob; 17. Cooling fan. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please see Figures 1-2 As shown, this utility model is a high-voltage box for container energy storage. The high-voltage box for container energy storage includes an outer shell 1. The interior of the outer shell 1 is divided into a power device area 3, a control module area 4, and a sensor area 5 by a partition 2. A rubber sealing strip 6 is provided at the seam of the outer shell 1. A heat dissipation vent is provided on the side wall of the outer shell 1, and a dustproof net 8 is installed at the heat dissipation vent. A connecting end plate 101 is fixedly provided at one end of the outer shell 1, and multiple waterproof connectors 9 for external interfaces are installed at the connecting end plate 101.

[0025] It should be noted that the standardized shell size and IP54 protection structure enable a compact layout and dustproof and waterproof functions, making it suitable for the harsh environment of containerized energy storage systems.

[0026] In an optional embodiment, the power device area 3 is equipped with a circuit breaker 31, a contactor 32 and a fuse 33, the control module area 4 is equipped with a battery cluster control management module 41 and a switching power supply 42, and the sensor area 5 is equipped with a current sensor 51 and a voltage detection module 52.

[0027] It should be noted that modular partitioned installation reduces electromagnetic interference, facilitates quick disassembly and repair, and improves equipment maintenance efficiency.

[0028] In an optional embodiment, heat dissipation fins 11 are provided on the inner surface of the housing 1, and a vertical air duct 12 is formed inside, with air entering from the bottom and exiting from the top. A heat insulation plate 13 is provided between the power device area 3 and the control module area 4.

[0029] It should be noted that the combination of natural heat dissipation and forced air cooling, along with thermal isolation design, ensures temperature isolation between high-voltage and low-voltage components, thereby improving system stability.

[0030] In an optional embodiment, the battery cluster control and management module 41 integrates battery cluster voltage / current acquisition, contactor control, protection logic, and communication management functions, and is connected to external systems via LAN, CAN, and RS-485 buses.

[0031] It should be noted that the integrated design reduces external wiring, improves communication reliability, and enables real-time monitoring and protection of battery cluster status.

[0032] In an optional embodiment, the battery cluster control management module 41 integrates a circulating current control circuit, which is installed close to the current sensor 51 and whose output signal is connected to the coil of the contactor 32.

[0033] It should be noted that closed-loop control suppresses circulating currents between battery clusters, preventing overcharging or over-discharging and extending battery life.

[0034] In an optional embodiment, the housing 1 is provided with an openable maintenance door 15, and the interior of the housing 1 is labeled with the names and functions of each component.

[0035] It should be noted that the maintenance window and clear labeling reduce the difficulty of maintenance, and component replacement can be completed without disassembling the entire high-voltage box.

[0036] In an optional embodiment, the fuse 33 is connected in series in the main circuit with a rated current ≤250A. The battery cluster control management module 41 monitors the total voltage of the battery cluster and triggers the contactor 32 to disconnect when the total voltage ≥1500V.

[0037] It should be noted that the system features dual overcurrent and overvoltage protection to prevent high-voltage faults from causing equipment damage or safety accidents.

[0038] In an optional embodiment, the connection end plate 101 is provided with an emergency stop knob 16, which supports AC~220V or DC-24V power supply and draws power from the battery pack through a DC / DC converter.

[0039] It should be noted that the emergency stop function and dual power supply redundancy design improve system safety and ensure rapid power cut-off in abnormal situations.

[0040] In an optional embodiment, a cooling fan 17 is provided in the vertical air duct 12. The start-stop logic of the cooling fan 17 is as follows: it starts when the temperature inside the casing 1 is >45°C and stops when it is ≤40°C.

[0041] It should be noted that optimized heat dissipation efficiency ensures the high-voltage box operates stably and continuously at an ambient temperature of 45℃.

[0042] In an optional embodiment, mounting plates 102 are fixedly provided on both sides of the connecting end plate 101, and two sets of lifting handles 103 are provided on the connecting end plate 101.

[0043] It should be noted that the mounting plate 102 facilitates the fixed installation of the high-voltage box, while the lifting handle 103 facilitates the handling and carrying of the high-voltage box.

[0044] The working principle of this utility model is as follows: The outer shell 1 of the high-voltage box has dimensions of 500mm wide × 600mm deep × 200mm high, and the interior is divided into three areas by a partition 2. The power device area 3 is equipped with circuit breakers 31, contactors 32 and fuses 33; the control module area 4 is equipped with a battery cluster control and management module 41 and a switching power supply 42; and the sensor area 5 is equipped with a current sensor 51 and a voltage detection module 52.

[0045] A rubber sealing strip 6 is installed at the seam of the outer casing 1, a dustproof mesh 8 is installed at the heat dissipation vent, and all external interfaces use waterproof connectors 9. Heat dissipation fins 11 are installed on the surface of the outer casing 1, and a vertical air duct 12 is formed inside, with air entering from the bottom and exiting from the top. A heat insulation plate 13 is installed between the power device area 3 and the control module area 4.

[0046] The battery cluster control and management module 41 integrates battery cluster voltage / current acquisition, contactor control, protection logic, and communication management functions, and connects to external systems via LAN, CAN, and RS-485 buses. The circulating current control circuit is integrated within the battery cluster control and management module 41, installed close to the current sensor 51, and its output signal is connected to the contact coil 32.

[0047] The housing 1 has an openable maintenance door 15, with the names and functions of each component labeled internally, and the wiring terminals are color-coded. A fuse 33 is connected in series in the main circuit, with a rated current ≤250A. The battery cluster control management module U1 monitors the total voltage of the battery cluster; when the total voltage ≥1500V, it triggers contactors KM1~KMn to disconnect. An emergency stop button 16 is located on the surface of housing 1, supporting AC~220V or DC-24V power supply, and drawing power from the battery pack via a DC / DC converter. The heat sink fins 11 are 2mm thick with a spacing of 5mm, and a cooling fan 17 is installed within the vertical air duct 12, with an airflow speed ≥1.5m / s. A current sensor 51 is installed near the battery cluster interface, with a signal transmission distance ≤500mm.

[0048] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A high-voltage box for containerized energy storage, comprising an outer shell (1), characterized in that: The interior of the housing (1) is divided into a power device area (3), a control module area (4) and a sensor area (5) by a partition (2). A rubber sealing strip (6) is provided at the seam of the housing (1). A heat dissipation vent is provided on the side wall of the housing (1), and a dustproof net (8) is installed at the heat dissipation vent. A connecting end plate (101) is fixedly provided at one end of the housing (1), and multiple waterproof connectors (9) for external interfaces are installed at the connecting end plate (101).

2. The high-voltage box for containerized energy storage according to claim 1, characterized in that, The power device area (3) is equipped with a circuit breaker (31), a contactor (32) and a fuse (33). The control module area (4) is equipped with a battery cluster control management module (41) and a switching power supply (42). The sensor area (5) is equipped with a current sensor (51) and a voltage detection module (52).

3. A high-voltage box for containerized energy storage according to claim 1, characterized in that, The inner surface of the outer shell (1) is provided with heat dissipation fins (11), and a vertical air duct (12) is formed inside, which draws air in from the bottom and exits air from the top. A heat insulation plate (13) is provided between the power device area (3) and the control module area (4).

4. A high-voltage box for containerized energy storage according to claim 2, characterized in that, The battery cluster control and management module (41) integrates battery cluster voltage / current acquisition, contactor control, protection logic and communication management functions, and is connected to external systems via LAN, CAN and RS-485 bus.

5. A high-voltage box for containerized energy storage according to claim 2, characterized in that, The battery cluster control management module (41) integrates a circulating current control circuit, which is installed close to the current sensor (51) and its output signal is connected to the coil of the contactor (32).

6. A high-voltage box for containerized energy storage according to claim 1, characterized in that, The outer casing (1) is provided with an openable maintenance door (15), and the names and functions of each component are marked inside the outer casing (1).

7. A high-voltage box for containerized energy storage according to claim 2, characterized in that, The fuse (33) is connected in series in the main circuit with a rated current of ≤250A. The battery cluster control management module (41) monitors the total voltage of the battery cluster and triggers the contactor (32) to disconnect when the total voltage is ≥1500V.

8. A high-voltage box for containerized energy storage according to claim 1, characterized in that, The connection end plate (101) is equipped with an emergency stop knob (16), which supports AC~220V or DC-24V power supply and draws power from the battery pack through a DC / DC converter.

9. A high-voltage box for containerized energy storage according to claim 3, characterized in that, A cooling fan (17) is installed inside the vertical air duct (12). The start-stop logic of the cooling fan (17) is as follows: it starts when the temperature inside the casing (1) is >45℃ and stops when it is ≤40℃.

10. A high-voltage box for containerized energy storage according to claim 1, characterized in that, Mounting support plates (102) are fixedly installed on both sides of the connecting end plate (101), and two sets of lifting handles (103) are provided on the connecting end plate (101).

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