An energy storage container with improved cooling

Abstract

The utility model discloses an energy storage container of improved cooling structure, through with water machine storehouse is located in the top of box, and is provided in pairs, and two opposite interval settings in each pair water machine storehouse, and interval place is as export passage, wherein, the air inlet of water machine storehouse is located mutually deviating one side, and the air outlet is located export passage one side. Through this liquid cooling water machine back to back layout mode, for the whole energy storage container, the air inlet of water machine is located in the outer periphery one side, and the air outlet is located in the export passage of top surface, and the hot air is guided to the upper space of energy storage container, avoids the air current short circuit and guarantees water machine refrigeration efficiency, and makes when using, adjacent energy storage container can be placed close, and will not influence each other radiating, and the land area is small, and the maximum arrangement without mutual interference.

Description

Technical Field

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

[0002] A liquid-cooled energy storage unit is a cooling device used in energy storage systems, and its main functions are as follows:

[0003] Temperature control: Energy storage devices (such as battery packs) in an energy storage system generate a large amount of heat during operation. Energy storage liquid cooling units control the temperature of the equipment by circulating coolant, ensuring that the equipment remains within a suitable operating temperature range and preventing overheating that could shorten equipment lifespan or degrade performance.

[0004] Heat dissipation: Energy storage devices generate heat not only during charging and discharging but also during prolonged standby or storage. Liquid cooling units effectively dissipate this heat through coolant circulation, maintaining the stability and safety of the equipment.

[0005] Improving energy conversion efficiency: In energy storage systems, the operating temperature of batteries or other energy storage devices has a significant impact on their energy conversion efficiency. Liquid cooling units for energy storage can help maintain equipment temperatures within a lower range, reducing heat loss and improving energy conversion efficiency, thereby enhancing the overall performance and efficiency of the energy storage system.

[0006] Enhancing system stability: Liquid cooling units for energy storage help control the temperature and pressure of energy storage equipment, preventing malfunctions or safety accidents caused by high temperatures or overheating. These cooling systems can also monitor equipment status in real time through intelligent control and monitoring functions, identifying potential problems in advance and ensuring system stability and reliability.

[0007] In summary, liquid cooling units play a crucial role in cooling and temperature control within energy storage systems. By cooling equipment, dissipating heat, and improving energy conversion efficiency, they ensure the normal operation of the system and enhance its performance and reliability.

[0008] As energy storage systems become increasingly integrated and space utilization efficiency improves, the placement of energy storage liquid cooling units is of paramount importance.

[0009] In existing technologies, liquid chillers are placed at the top of the cabinet, resulting in a concentrated air intake area and a small air outlet space. This makes it difficult to meet the minimum air intake and exhaust area requirements of liquid chillers, especially in high-temperature external environments, which can easily cause the system to operate at reduced capacity or even risk shutdown. In addition, the project requires high spacing between cabinets and occupies a large area.

[0010] For example, invention application CN114284628A discloses a box-type energy storage battery system, including a container for integrating the installation carrier. The container includes a battery compartment, an electrical compartment, and a liquid-cooled compartment. The battery compartment is equipped with battery clusters, which include battery systems, mounting brackets, and a liquid-cooled piping system. The liquid-cooled piping system is connected to the battery system and includes multiple pipes that extend into the battery compartment. The liquid-cooled compartment includes a liquid-cooled unit, which is connected to the other end of the liquid-cooled piping system.

[0011] For example, the utility model with authorization announcement number CN222562841U discloses a high power density battery energy storage system and an energy storage container. The energy storage container includes a liquid cooling unit, which is installed inside the container and located on one side of multiple sets of the high power density battery energy storage system. The liquid cooling unit is connected to a liquid supply main pipe and a liquid return main pipe, which are distributed below the multiple sets of the high power density battery energy storage system. Summary of the Invention

[0012] This invention addresses the aforementioned shortcomings in the prior art by providing an energy storage container with an improved cooling structure.

[0013] An energy storage container with an improved cooling structure 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, and the top surface of the container body having a pair of water turbine compartments, each water turbine being used to dissipate heat from the battery modules in the battery compartments.

[0014] The two water turbine compartments in each pair are arranged at relative intervals, with the interval 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.

[0015] Preferably, the air outlet is equipped with louvered air guide plates, each of which is obliquely upward from the water turbine compartment to the outlet channel. The air guide plates allow hot air to be directed obliquely upward above the energy storage container, facilitating its exhaust.

[0016] Preferably, the water cooler has a fan on the side facing the air outlet, and a coolant inlet pipe and a coolant outlet pipe on the side facing the air inlet. The coolant inlet pipe and the coolant outlet pipe form a cooling circuit to cool the battery module. The cooling pipes in the battery compartment can be configured using conventional methods in the prior art, and then connected to the coolant inlet pipe and the coolant outlet pipe of the water cooler to form a circuit.

[0017] Preferably, there is a gap between the water pump and the top surface of the water pump compartment, and the water pump compartment is provided with a backflow preventer to block the gap. By setting the backflow preventer, the possibility of short-circuiting of the airflow between the front and rear sides is avoided, that is, cold air directly reaches the air outlet from the top of the water pump, or hot air flows back to the air inlet from the top of the water pump.

[0018] More preferably, the backflow preventer is located on the side near the air inlet.

[0019] Preferably, the water purifier has a first hood on the side facing the air inlet, and the water purifier compartment has a second hood on the side facing the air inlet. Both the first and second hoods have ventilation holes. The second hood of the water purifier compartment is located on the water purifier compartment door.

[0020] Preferably, the battery compartment includes four compartments distributed at the four corners of the container, the four battery compartments are divided into two groups, and the control equipment compartment is located between the two groups of battery compartments; each battery compartment is topped with a water turbine compartment, and two water turbine compartments corresponding to the same group of battery compartments form a pair. By distributing the water turbine compartments at the top four corners of the energy storage container, the air intake areas are dispersed, and there is no interference between them.

[0021] This utility model relates to an improved cooling structure for energy storage containers. Water chiller compartments are located on the top surface of the container and arranged in pairs. Each pair of compartments has two compartments spaced apart, with the gap serving as an outlet channel. The air inlets of the water chillers are located on opposite sides, while the air outlets are located on the outlet channel side. This back-to-back arrangement of the liquid-cooled water chillers ensures that the air inlets are on the outer circumference of the container, while the air outlets are located in the top outlet channel. This directs hot air towards the top of the container, preventing airflow short-circuiting and ensuring efficient cooling. Furthermore, when installed side-by-side, adjacent containers can be placed close together without affecting each other's heat dissipation, resulting in a smaller footprint and maximizing space utilization without interference. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the energy storage container of this utility model.

[0023] Figure 2 This is a three-dimensional structural schematic diagram of the energy storage container of this utility model from another perspective.

[0024] Figure 3 This is a three-dimensional structural diagram of a pair of water turbine compartments.

[0025] Figure 4 This is a side view of the structure of a pair of water turbine compartments.

[0026] Figure 5 This is a side view of the structure of a pair of water turbine compartments from another perspective.

[0027] Figure 6 for Figure 5 A cross-sectional view along the AA direction.

[0028] Figure 7 This is a three-dimensional structural diagram of a single water turbine compartment.

[0029] Figure 8 This is a side view of a single water turbine compartment.

[0030] Reference numerals: 1. Housing; 2. Battery compartment door; 3. Upper control equipment compartment; 31. PCS air inlet door; 32. PCS rear door; 4. Lower control equipment compartment; 5. Water turbine compartment; 51. Water turbine; 52. Outlet channel; 53. Air guide plate; 54. Fan; 55. Coolant inlet pipe; 56. Coolant outlet pipe; 57. Backdraft baffle; 58. First air shroud; 59. Second air shroud. Detailed Implementation

[0031] like Figures 1-2 As shown, an energy storage container with an improved cooling structure includes a container body 1. The container body 1 contains several battery compartments for placing battery modules. The battery compartments include four located at the four corners of the container body 1, divided into two groups, each group consisting of two compartments arranged opposite each other. Each battery compartment has a battery compartment door 2 on the side of the container body 1.

[0032] The enclosure 1 contains a control equipment compartment located between two battery compartments. 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, as well as an air conditioner and auxiliary fans for cooling the equipment inside. The upper and lower control equipment compartments 3 and 4 are designed with separate, isolated spaces, effectively ensuring heat dissipation in the upper control equipment compartment 3 while minimizing temperature interference to the components in the lower control equipment compartment 4. In the lower control equipment compartment 4, the air conditioner and auxiliary fans are located on opposite sides, with the air conditioner discharging cold air and the auxiliary fans drawing air outwards to assist in cooling. The lower control equipment compartment 4 adopts an air duct design that combines a power-assisted fan and an air conditioner. This combination allows hot and cold air to circulate throughout the cabin in a narrow and winding space, ensuring the cabin's ambient temperature and dehumidifying the environment.

[0033] The top surface of the container 1 is equipped with a pair of water cooling chambers 5, each containing a water cooling system 51 for cooling the battery modules within the battery compartment. Each battery compartment has one water cooling chamber 5 above it, and two water cooling chambers 5 corresponding to the same battery compartment form a pair. The distribution of the water cooling chambers 5 at the four corners of the top of the energy storage container ensures that the air intake areas are dispersed and do not interfere with each other.

[0034] 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.

[0035] like Figures 3-8 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.

[0036] 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 inside the battery compartment 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 is used to cool the battery module in the corresponding battery compartment below.

[0037] 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.

[0038] 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.

[0039] This utility model's improved cooling structure for energy storage containers involves placing water turbine compartments 5 on the top surface of the container body 1, arranged in pairs. Two compartments 5 in each pair are spaced apart, with the gap serving as an outlet channel. The air inlets of the water turbine compartments 5 are located on opposite sides, while the air outlets are located on the outlet channel side. This back-to-back arrangement of the liquid-cooled water turbines ensures that, for the entire energy storage container, the air inlets of the water turbines 51 are located on the outer circumference, while the air outlets are located in the top outlet channel 52. This directs hot air towards the top of the energy storage container, preventing airflow short-circuiting and ensuring the cooling efficiency of the water turbines. Furthermore, when installed side-by-side, adjacent energy storage containers can be placed close together without affecting each other's heat dissipation, resulting in a smaller footprint and maximizing layout without mutual interference.

Claims

1. An energy storage container with an improved cooling structure, 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 top surface of the housing is provided with a pair of water cooler compartments, and the water cooler compartments are equipped with water coolers for cooling the battery modules in the battery compartment. The two water turbine compartments in each pair are arranged at relative intervals, with the interval 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.

2. The energy storage container with improved cooling structure according to claim 1, characterized in that, The air outlet is equipped with a louvered air guide plate, and each air guide plate is set obliquely upward from the water turbine compartment to the outlet channel.

3. The energy storage container with improved cooling structure according to claim 1, characterized in that, The water cooler is equipped with a fan on the side facing the air outlet, and a coolant inlet pipe and a coolant outlet pipe on the side facing the air inlet. The coolant inlet pipe and the coolant outlet pipe are used to form a cooling circuit to cool the battery module.

4. The energy storage container with improved cooling structure according to claim 1, characterized in that, There is a gap between the water pump and the top surface of the water pump chamber, and the water pump chamber is equipped with a backflow preventer baffle to block the gap.

5. The energy storage container with improved cooling structure according to claim 4, characterized in that, The backflow preventer is located on the side near the air inlet.

6. The energy storage container with improved cooling structure according to claim 1, characterized in that, The water purifier has a first hood on the side facing the air inlet, and the water purifier compartment has a second hood on the side facing the air inlet. Both the first and second hoods have ventilation holes.

7. The energy storage container with improved cooling structure according to claim 1, characterized in that, The battery compartment includes four battery compartments distributed at the four corners of the housing. 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, and two water purifier compartments corresponding to the same group of battery compartments form a pair.

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