An improved energy storage container

Abstract

This utility model discloses an improved energy storage container, including a container body. The container body contains several battery compartments for housing battery modules and a control equipment compartment for housing control equipment. The battery compartments are distributed at the four corners, on both sides along the length or width of the container body, and the control equipment compartments are located between the battery compartments, so that the center of gravity of the energy storage container is located on the vertical central axis of the container body. This utility model, by distributing the battery compartments at the four corners, on both sides along the length or width of the container body, and then placing the control equipment compartments between the battery compartments, ensures that the center of gravity of the energy storage container is located on the vertical central axis of the container body, thus facilitating the transportation and hoisting of the energy storage container. Furthermore, thermal runaway from one battery compartment will not immediately propagate to the other side, effectively protecting the batteries.

Description

Technical Field

[0001] This utility model belongs to the field of energy storage battery technology, specifically relating to an energy storage container with improved structure. Background Technology

[0002] Energy storage refers to the process of storing energy through media or equipment and releasing it when needed. Energy storage is a crucial technology and fundamental equipment supporting new power systems. It can provide various services for grid operation, such as peak shaving, frequency regulation, backup, black start, and demand response support, and is an important means to improve the flexibility, economy, and security of traditional power systems. Energy storage can significantly improve the absorption of renewable energy sources such as wind and solar power, support distributed power and microgrids, and is a key technology for promoting the shift of the primary energy source from fossil fuels to renewable energy.

[0003] Among various energy storage technologies, electrochemical energy storage has better flexibility and adaptability in terms of scale and site compared with other forms of energy storage. At the same time, it has comparative advantages in many aspects such as dispatch response speed, control accuracy, power system frequency regulation and construction cycle, and plays an irreplaceable important role. It has a broader application prospect and has a strong development momentum in the global energy storage market in the past two years.

[0004] Electrochemical energy storage systems mainly consist of battery modules, a power conversion system (PCS), a high-voltage battery box, and other auxiliary systems. The battery modules are responsible for energy storage; the PCS is a converter that connects the battery system to the grid (or load) to achieve bidirectional energy conversion; the BMS (Battery Management System) and EMS (Energy Management System) are the management and control centers of the energy storage system. The BMS is mainly responsible for monitoring battery data and protecting battery safety; the EMS mainly achieves energy control of the microgrid within the energy storage system through data acquisition, network monitoring, and energy dispatching, ensuring the normal operation of the microgrid and the entire system; auxiliary systems include subsystems such as fire protection, thermal management, and emergency power supply.

[0005] Currently, the layout of energy storage systems is often not optimized. For example, the invention application with publication number CN119361907A discloses an energy storage container in which the liquid cooling system 30 and the constant temperature air cooling system 40 are located at one end of the container's length, causing the center of gravity of the entire energy storage container to be biased to one side, which is not conducive to transportation and hoisting. Summary of the Invention

[0006] This invention addresses the aforementioned shortcomings in the existing technology by providing a structurally improved energy storage container.

[0007] An improved energy storage container includes a container body, the container body having a plurality of battery compartments for placing battery modules and a control equipment compartment for placing control equipment. The battery compartments are distributed at the four corners of the container body, on both sides in the length direction, or on both sides in the width direction. The control equipment compartments are located between the battery compartments, such that the center of gravity of the energy storage container is located on the vertical central axis of the container body.

[0008] Preferably, the top corner of the housing is provided with a hoisting hole for hoisting.

[0009] Preferably, the housing is further provided with several water cooling chambers above the battery compartment, and each water cooling chamber is equipped with a water cooler for cooling the battery modules inside the battery compartment.

[0010] More preferably, the battery compartment includes four, distributed at the four corners of the box, the four battery compartments are divided into two groups, and the control device compartment is located between the two groups of battery compartments;

[0011] Above each of the battery compartments is a water purifier compartment.

[0012] More preferably, the two water turbine compartments above the two battery compartments in the same group are arranged at intervals relative to each other, and the intervals serve as outlet channels. The air inlets of the water turbine compartments are located on opposite sides, and the air outlets are located on one side of the outlet channel.

[0013] More preferably, the air outlet is provided with a louvered air guide plate, and each air guide plate is arranged obliquely upward from the water turbine compartment to the outlet channel.

[0014] More preferably, the control equipment compartment is divided into an upper control equipment compartment and a lower control equipment compartment, which are independent of each other. The upper control equipment compartment and the lower control equipment compartment are respectively provided with compartment doors on both sides of the box body, and ventilation holes are provided on the compartment doors on both sides of the upper control equipment compartment.

[0015] The upper control equipment compartment contains an energy storage converter, while the lower control equipment compartment contains a battery high-voltage box, a UPS power supply, and an air conditioner.

[0016] More preferably, the bottom surface of the outlet channel has an installation area, the installation area is provided with an explosion vent, and the explosion vent is equipped with an explosion vent plate.

[0017] This utility model discloses an improved energy storage container. By distributing battery compartments at the four corners, on both sides along the length, or on both sides along the width of the container, and then placing the control equipment compartment between the battery compartments, the center of gravity of the energy storage container is located on the vertical central axis of the container, which facilitates the transportation and hoisting of the energy storage container. Furthermore, thermal runaway from one battery compartment will not immediately spread to the other side, effectively protecting the batteries. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the energy storage container of this utility model.

[0019] Figure 2 This is a three-dimensional structural schematic diagram of the energy storage container of this utility model from another perspective.

[0020] Figure 3 This is a three-dimensional structural diagram of the empty box after removing each compartment door.

[0021] Figure 4 This is a side view of the empty container after removing the doors.

[0022] Figure 5 A 3D structural diagram of the battery module in each battery compartment.

[0023] Figure 6 This is a three-dimensional structural diagram of a pair of water turbine compartments.

[0024] Figure 7 This is a cross-sectional structural diagram of a pair of water turbine compartments.

[0025] Figure 8 This is a schematic diagram of the structure at the explosion vent plate.

[0026] Figure 9 for Figure 8 Enlarged view of part A in the middle.

[0027] Figure label:

[0028] 1. Housing, 11. Lifting hole, 2. Battery compartment, 21. Battery compartment door, 22. Battery module, 3. Upper control equipment compartment, 31. PCS air inlet door, 32. PCS rear door, 4. Lower control equipment compartment, 5. Water turbine compartment, 51. Outlet channel, 52. Air guide plate, 53. Fan, 54. Coolant inlet pipe, 55. Coolant outlet pipe, 56. Backdraft baffle, 57. First air hood, 58. Second air hood, 59. Explosion vent, 6. Mounting plate, 61. Reinforcing frame, 62. Explosion vent plate, 71. Mounting part, 72. Mounting flange, 73. Bolt, 74. First sealing gasket, 75. Second sealing gasket, 76. Blind hole riveting nut. Detailed Implementation

[0029] like Figures 1-4As shown, an improved energy storage container includes a container body 1. The container body 1 contains several battery compartments 2 for housing battery modules 22 and a control equipment compartment for housing control equipment. The battery compartments 2 are located at the four corners of the container body 1, or on both sides of the container body 1 along its length or width. The control equipment compartment is located between the battery compartments 2, ensuring that the center of gravity of the energy storage container is located on the vertical central axis of the container body 1. Because the center of gravity is on the vertical central axis, the container remains stable during transportation and hoisting, preventing instability from affecting these processes.

[0030] In a preferred embodiment, as shown in the figure, there are a total of four battery compartments 2, located at the four corners of the container 1. The four battery compartments 2 are divided into two groups, each group consisting of two compartments arranged opposite each other. The two battery compartments in each group are positioned close to each other, and a control equipment compartment is located between the two groups of battery compartments 2. For the entire energy storage container, the weight of the battery module 22 is much greater than the weight of other components; therefore, distributing the four battery compartments 2 at the four corners makes the overall weight more evenly distributed.

[0031] The top surface of the housing 1 has four corners with lifting holes 11 for hoisting. Preferably, the bottom surface also has four corners with lifting holes 11 for hoisting.

[0032] like Figure 5 As shown, this is the structure of a set of battery modules 22, with each battery compartment 2 containing a set of battery modules 22. Each battery compartment 2 has a battery compartment door 21 on the side of the housing 1. A set of battery modules 22 includes multiple battery modules 22, with each battery module 22 on a single layer. The internal structure of the battery modules 22 in this application can use conventional structural designs in the prior art.

[0033] The enclosure 1 contains a control equipment compartment located between two battery compartments 2. This control equipment compartment is divided into upper and lower levels: an upper control equipment compartment 3 and a lower control equipment compartment 4. The upper control equipment compartment 3 has a PCS air inlet door 31 and a PCS rear door 32 on opposite sides of the enclosure 1, respectively. Both doors have ventilation holes for heat dissipation and ventilation. The upper control equipment compartment 3 houses an energy storage converter (PCS). The lower control equipment compartment 4 also has doors on opposite sides of the enclosure 1. The lower control equipment compartment 4 houses other control equipment, such as a battery high-voltage box and a UPS power supply, and is also equipped with an air conditioner for cooling the equipment inside.

[0034] Above each battery compartment 2, the container 1 also has a water cooling chamber 5, which contains a water cooling system 51 for cooling the battery modules 22 inside the battery compartment 2. Two water cooling chambers 5 corresponding to the same group of battery compartments 2 form a pair. By distributing the water cooling chambers 5 at the four corners of the top of the energy storage container, the air intake areas are dispersed and do not interfere with each other.

[0035] Two water turbine compartments 5 are arranged opposite each other, with the gap serving as an outlet channel 52. The air inlets of the water turbine compartments 5 are located on opposite sides, and the air outlets are located on one side of the outlet channel 52. The outlet channel 52 is essentially formed by a downward slope on the top of the energy storage container, with the top surface of the water turbine compartments 5 serving as the top surface of the energy storage container. The top surface of the energy storage converter compartment 3 is flush with the top surface of each water turbine compartment 5. Therefore, the outlet channel 52 opens on the top surface of the energy storage container. Simultaneously, the side of the outlet channel 52 closest to the energy storage converter compartment 3 is obstructed by the side wall of the energy storage converter compartment 3, while the opposite side opens on the side of the energy storage container.

[0036] like Figures 6-7 As shown, the air outlet of the water turbine compartment 5 is equipped with louvered air guide plates 53, each of which is obliquely upward from the water turbine compartment 5 to the outlet channel 52. The air guide plates 53 allow hot air to be guided obliquely upward above the energy storage container, facilitating the exhaust of hot air.

[0037] The water cooler 51 has a fan 54 on the side facing the air outlet, which drives hot air to be discharged into the outlet channel 52. The water cooler 51 also has an inlet coolant pipe 55 and an outlet coolant pipe 56 on the side facing the air inlet, which form a cooling circuit to cool the battery module. The cooling pipes in the battery compartment 2 can be configured using conventional methods in the prior art, and then connected to the inlet coolant pipe 55 and outlet coolant pipe 56 of the water cooler 51 to form a circuit. Each water cooler 51 in each compartment 5 is used to cool the battery module 22 in the corresponding battery compartment 2 below.

[0038] There is a gap between the water purifier 51 and the top surface of the water purifier compartment 5 to facilitate the installation and maintenance of the water purifier 51. A backflow preventer 57 is installed inside the water purifier compartment 5 to block this gap. In the structure shown in the figure, the backflow preventer 57 is located on the side near the air inlet of the water purifier compartment 5. The backflow preventer 57 prevents short-circuiting of the airflow between the front and rear sides, meaning that cold air can directly reach the air outlet from above the water purifier, or hot air can flow back from above the water purifier 51 to the air inlet.

[0039] The water turbine 51 has a first hood 58 on the side facing the air inlet, and the water turbine compartment 5 has a second hood 59 on the side facing the air inlet. Both the first hood 58 and the second hood 59 have ventilation holes, which are arranged in an array. The second hood 59 of the water turbine compartment 5 is located on the water turbine compartment door.

[0040] like Figures 8-9As shown, the area on the top surface of the housing 1 where the water turbine compartment 5 is not located forms an installation area lower than the top surface of the water turbine compartment 5. At least one of the installation areas is equipped with an explosion vent 6, and an explosion vent plate 7 is installed on the explosion vent 6. In the structure shown in the figure, there are two installation areas between the two pairs of water turbine compartments 5, each installation area is equipped with an explosion vent 6, and each explosion vent 6 is equipped with an explosion vent plate 7.

[0041] The strength of the explosion relief plate 7 is less than that of the top and side walls of other parts of the energy storage container. As a result, when the pressure inside the container is abnormal and reaches the explosion relief pressure value, the explosion relief plate 7 will burst first, and the pressure will be released from the explosion relief port 6, reducing the damage to other components of the energy storage container.

[0042] The enclosure 1 has a mounting plate 61 on the outer periphery of the top surface of the explosion vent 6. The mounting plate 61 can be directly integrated with the top wall of the enclosure 1, or it can be separately installed on the outer side of the top wall of the enclosure 1. If the mounting plate 61 is installed separately, it needs to be fixed to the top wall of the enclosure 1. The explosion vent 7 has a mounting part 71 that protrudes to the side. The mounting part 71 overlaps the mounting plate 61 on the outer periphery of the top surface of the explosion vent 6 and is fixed by bolts 73.

[0043] A mounting flange 72 is provided above the mounting part 71. A first sealing gasket 74 is provided between the mounting flange 72 and the mounting part 71. A second sealing gasket 75 is provided between the mounting part 71 and the mounting plate 61. Bolts 73 pass through the mounting flange 72, the first sealing gasket 74, the mounting part 71, the second sealing gasket 75 and the mounting plate 61 in sequence.

[0044] The installation of flange 72 ensures a secure installation of the explosion relief plate 7. The placement of the first sealing gasket 74 and the second sealing gasket 75 provides good sealing performance after installation of the explosion relief plate 7, which is beneficial for waterproofing.

[0045] When bolt 73 is fixed, it is riveted to mounting plate 61 using blind hole rivet nut 76. The use of blind hole rivet nut 76 ensures good sealing and waterproofing at the mounting hole when bolt 73 is fixed, preventing water from seeping into the interior of box 1 through the mounting hole of bolt 73.

[0046] A reinforcing frame 62 for strengthening the structure is provided on the side of the explosion vent 6, below the mounting plate 61. The reinforcing frame 62 strengthens the structure near the explosion vent 6, ensuring the safety of the explosion vent plate 7 and preventing damage under non-pressure relief conditions.

[0047] The energy storage container with improved structure of this utility model distributes the battery compartments 2 at the four corners, the two sides in the length direction or the two sides in the width direction of the container body 1, and then places the control equipment compartment between the battery compartments 2, so that the center of gravity of the energy storage container is located on the vertical central axis of the container body 1, which is beneficial to the transportation and hoisting of the energy storage container.

Claims

1. An improved energy storage container, comprising a container body, wherein the container body is provided with a plurality of battery compartments for placing battery modules and a control equipment compartment for placing control equipment, characterized in that, The battery compartments are distributed at the four corners of the container, on both sides along the length or width, and the control equipment compartment is located between the battery compartments, so that the center of gravity of the energy storage container is located on the vertical central axis of the container.

2. The structurally improved energy storage container according to claim 1, characterized in that, The top corner of the box is provided with a hoisting hole for hoisting.

3. The structurally improved energy storage container according to claim 1, characterized in that, The enclosure is also equipped with several water cooling chambers above the battery compartment, and each water cooling chamber contains a water cooler for cooling the battery modules inside the battery compartment.

4. The energy storage container with improved structure according to claim 3, characterized in that, The battery compartment includes four compartments, which are distributed at the four corners of the box. The four battery compartments are divided into two groups, and the control device compartment is located between the two groups of battery compartments. Above each of the battery compartments is a water purifier compartment.

5. The structurally improved energy storage container according to claim 4, characterized in that, Two water turbine compartments above two battery compartments in the same group are arranged opposite each other, with the gap serving as an outlet channel. The air inlets of the water turbine compartments are located on opposite sides, and the air outlets are located on one side of the outlet channel.

6. The structurally improved energy storage container according to claim 5, characterized in that, The air outlet is equipped with louvered air guide plates, and each air guide plate is obliquely upward from the water turbine compartment to the outlet channel.

7. The structurally improved energy storage container according to claim 5, characterized in that, The control equipment compartment is divided into an upper control equipment compartment and a lower control equipment compartment, which are independent of each other. The upper control equipment compartment and the lower control equipment compartment are respectively provided with compartment doors on both sides of the box body, and ventilation holes are provided on the compartment doors on both sides of the upper control equipment compartment. The upper control equipment compartment contains an energy storage converter, while the lower control equipment compartment contains a battery high-voltage box, a UPS power supply, and an air conditioner.

8. The structurally improved energy storage container according to claim 5, characterized in that, The bottom surface of the outlet channel has an installation area, and the installation area is provided with an explosion vent, on which an explosion vent plate is installed.

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