Energy storage battery cabinet unit and energy storage battery cabinet

Abstract

The application provides a kind of energy storage battery cabinet unit and energy storage battery cabinet, including the battery box being installed in the inside of energy storage battery cabinet unit, the battery box is equipped with exhaust fan, the two side walls of the battery cabinet unit are equipped with vertical air duct, the top of the vertical air duct is equipped with air duct entrance, side is equipped with multiple air ducts corresponding with battery box, the battery cabinet unit is also equipped with flow guide plate, the flow guide plate is respectively first flow guide plate and second flow guide plate, the second flow guide plate is located at the top of the battery cabinet unit, the first flow guide plate is inserted into vertical air duct, under the negative pressure effect of the exhaust fan, cold air enters battery box through air duct entrance.The application provides a kind of energy storage battery cabinet unit and energy storage battery cabinet, on the basis of external maintenance energy storage container system, cancel internal air conditioner and air duct, adopt wall-mounted air conditioner to heat dissipation battery cabinet, battery cabinet is designed with corresponding flow guide plate, limit and other structures to guide cold air, so that battery cabinet heat dissipation is more uniform, temperature difference is smaller.

Description

Technical Field

[0001] This invention relates to the technical field of heat dissipation in air-cooled energy storage container systems, and particularly to an energy storage battery cabinet unit and an energy storage battery cabinet. Background Technology

[0002] Air-cooled energy storage container systems, as a form of lithium-ion battery energy storage, have been widely adopted in the energy storage field. Their technical characteristic is that they consist of multiple air-cooled battery boxes forming energy storage cabinets, which are then sequentially arranged within the energy storage container system. The structural design of the energy storage cabinets varies depending on the maintenance method of the energy storage container system.

[0003] Air-cooled energy storage battery cabinets come in two main types based on their battery box structure: left and right air intake and front air exhaust, and rear air intake and front air exhaust.

[0004] If the energy storage container system adopts an external maintenance method, due to the limitation of internal space, most of them adopt a battery box design with left and right air intake and front air exhaust. A large area of ​​air ducts is arranged on the upper part of the container battery cabinet to introduce the cold air of the air conditioner into the air ducts of the battery cabinet to dissipate heat from the battery box. However, this technical solution uses a centralized air conditioner and then uses air ducts to draw cold air to dissipate heat from multiple battery cabinets. The amount of cold air received by the multiple battery cabinets is different, and the heat dissipation effect is also different. The temperature difference of the entire energy storage container product will increase, and the cost of a large number of air ducts is also high.

[0005] Another type of external maintenance container system uses a high-power air conditioner on one side for overall airflow and heat dissipation, eliminating the need for air ducts above the battery cabinet. However, without the airflow extraction effect of ducts, the horizontally blown cold air must enter the vertical air ducts of the battery cabinet to dissipate heat. Due to the irregular diffusion of cold air, localized high-temperature zones will appear in the middle and side air ducts of the electromagnetic cabinet, where the cold air cannot reach. These areas will experience poor battery heat dissipation, easily leading to uneven airflow distribution, large temperature differences, and poor heat dissipation. Figure 1 As shown. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide an energy storage battery cabinet unit and energy storage battery cabinet. Based on the external maintenance energy storage container system, the internal air conditioner and air duct are eliminated, and a wall-mounted air conditioner is used to dissipate heat from the battery cabinet. The battery cabinet is designed with corresponding guide plates, limiting structures and other structures to guide the cold air, so that the heat dissipation of the battery cabinet is more uniform and the temperature difference is smaller.

[0007] To achieve the above objectives, this invention proposes an energy storage battery cabinet unit, including a battery box installed inside the energy storage battery cabinet unit. The battery box is equipped with an exhaust fan. Vertical air ducts are provided on both side walls of the battery cabinet unit. An air duct inlet is located at the top of the vertical air duct, and multiple air duct openings corresponding to the battery box are provided on the side. The battery cabinet unit also includes guide plates, namely a first guide plate and a second guide plate. The second guide plate is located at the top of the battery cabinet unit and is used to guide cold air into the air duct inlet. The first guide plate is inserted into the vertical air duct and is used to guide the cold air located at the air duct inlet along the first guide plate into the vertical air duct. Under the negative pressure of the exhaust fan, the cold air located in the vertical air duct enters the battery box through the air duct openings for heat dissipation of the battery box.

[0008] This technical solution adds a guide plate structure to the traditional vertical air duct. The guide plate is divided into two parts. Combined with the exhaust fan in the battery box, it guides the cold air blown by the high-power air conditioner on one side into the vertical air duct and then into the battery box, so as to achieve uniform heat dissipation and small temperature difference in the battery cabinet, and also allows the areas with more severe heat generation to be better cooled.

[0009] Preferably, a battery cavity is provided between the two vertical air ducts. The battery cavity has at least one set of bracket assemblies for fixing the battery box on the side wall near the vertical air duct. The bracket assembly includes two brackets, each bracket including at least two buffer parts and a non-buffered part located between the buffer parts. The battery box is inserted between the two brackets and pressed and fixed by the buffer parts. A channel for cold air to enter is provided between the side wall of the battery box and the non-buffered part. The side wall of the battery box near the bracket has an air inlet. Two rows of batteries are arranged side by side in the battery box. A battery air duct is provided between the two rows of batteries. Under the negative pressure of the exhaust fan, cold air enters the air duct inlet, the channel, the air inlet and the battery air duct in sequence for the overall heat dissipation of the battery box.

[0010] This technical solution includes a bracket assembly for mounting and securing the battery box. The bracket has both a buffer section and a non-buffered section. The buffer section can be a welded arc-shaped piece, a stamped arc-shaped structure, etc. Its inherent arc shape makes it easier to absorb assembly tolerances and provides a certain degree of cushioning. Furthermore, because the buffer section has a certain thickness, a channel for cold air to enter is left between the non-buffered section and the side wall of the battery box. Combined with the functions of the baffle plate and exhaust fan, the cold air blown by the high-power air conditioner can sequentially enter the vertical air duct, the air duct opening, the channel, the air inlet, and the battery air duct, achieving comprehensive heat dissipation for the battery box. The buffer section in this technical solution not only provides a buffering function but also provides certain conditions for the entry of cold air into the air duct, which is something that those skilled in the art would not easily conceive of.

[0011] Furthermore, the buffer portion is a welded arc-shaped sheet or a stamped arc-shaped structure.

[0012] Combining the above technical solutions, the buffer section of this structure is simple in structure, and provides a certain degree of adjustment for the installation and fixation of the battery box and the channel formed between the side wall brackets of the battery box. Moreover, the size of the channel can be finely adjusted according to the pressure on the buffer section. Especially during transportation, the fine adjustment of the channel size promotes the acceleration and uniform flow of cold air, and improves the uniformity of heat dissipation of the battery box as a whole.

[0013] Furthermore, the bracket is also provided with a limiting structure for interference limiting in the height direction when the battery box is installed.

[0014] In this technical solution, the limiting structure can adopt a wedge-shaped spring plate structure. After the battery box is installed, the rear end will be interference-limited in the height direction, providing stable conditions for cold air to enter and dissipate heat in the height direction.

[0015] Furthermore, the bracket is also equipped with a top screw structure for adjusting the position of the battery box when there is a deviation in the installation depth.

[0016] This technical solution combines the buffer section, the limiting structure, and the set screw structure. Compared with the traditional solution that simply fixes the battery box with bolts at the front, it adds fixing structures in the lateral and vertical directions to ensure that the battery box is firm and does not loosen under impact and jumping during transportation. The rear set screw structure can reduce the stress on the front fixing structure when the battery box is impacted in the length direction.

[0017] Preferably, the battery cabinet unit is also provided with an adjustment limit plate above it, and a cold air channel is provided between the adjustment limit plate and the battery cabinet unit. The cold air channel is connected to the vertical air duct and is used to adjust the concentration of air volume.

[0018] In this technical solution, an adjustable limit plate is set up. The adjustable limit plate can be fixed to the top of the battery cabinet unit with fasteners such as bolts. A cold air channel for cold air to enter is set between the adjustable limit plate and the top of the battery cabinet unit. The cold air channel is connected to the vertical air duct. Due to the effect of the adjustable limit plate, the cold air blown out of the wall-mounted air conditioner can adjust the concentration of air volume. Together with the guide plate and the vertical air duct, the heat dissipation effect of the battery box is ultimately improved.

[0019] An energy storage battery cabinet includes at least two battery cabinet units with the above-described structure. The vertical air ducts between two adjacent battery cabinet units are connected to each other. The two connected vertical air ducts are the middle air ducts of the battery cabinet, and the vertical air ducts on both sides of the battery cabinet are the side air ducts. One side of the first guide plate is inserted into the side air duct, and the other side is inserted into the middle air duct.

[0020] In this technical solution, the battery cabinet consists of multiple battery cabinet units, with two side wall air ducts and at least one intermediate air duct. Each intermediate air duct is composed of vertical air ducts on the sides of two battery cabinet units, which expands the air duct area without increasing costs and enables air duct sharing. At this time, the wall-mounted air conditioner is set on the side of the energy storage battery cabinet. The cold air blown by the air conditioner can be concentrated and effectively utilized under the guidance of the baffle plate. Most of the cold air can be guided into the air duct to dissipate heat from the battery box inside the battery cabinet, achieving uniform heat dissipation of the entire battery cabinet, good heat dissipation effect, and lower temperature difference.

[0021] Preferably, after the first guide plate is inserted into the side air duct or the middle air duct, it divides the side air duct or the middle air duct into two small air ducts, which are used to guide the cold air located at the air duct inlet to be blown into the two small air ducts along the first guide plate. Under the negative pressure of the exhaust fan, the cold air located in the two small air ducts enters the battery box through the air duct opening.

[0022] In combination with the above technical solutions, the wall-mounted air conditioners are installed on both sides of the battery cabinet, which is suitable for heat dissipation of the battery cabinet composed of multiple battery cabinet units. The cold air blown out by the air conditioners on both sides enters the battery box through two small air ducts through the guide plate and enters the battery box under the action of the exhaust fan, resulting in good heat dissipation.

[0023] The beneficial effects of this invention are as follows: This invention eliminates the need for internal air conditioning and air ducts, and uses wall-mounted air conditioners to dissipate heat from the battery cabinet. Combined with the coordinated design of the guide plate, buffer section, limiting structure, and top screw structure, the battery cabinet is fixed while simultaneously dissipating heat evenly, allowing even areas with more severe heat generation to receive better cooling. Furthermore, the limiting adjustment plate regulates the concentration of airflow, improving the overall heat dissipation effect of the battery cabinet unit. Additionally, side-mounted air conditioners are placed on both sides of the battery cabinet, enabling each battery cabinet to have its own independent thermal management environment, resulting in better overall system heat dissipation and lower temperature differences.

[0024] The features and advantages of the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the high-temperature zones in the middle and side air ducts of existing technology.

[0026] Figure 2 This is a schematic diagram of the battery cabinet structure of the present invention. Figure 1 .

[0027] Figure 3 This is a schematic diagram of the battery cabinet structure of the present invention. Figure 2 .

[0028] Figure 4 This is a schematic diagram of the battery cabinet structure of the present invention. Figure 3 .

[0029] Figure 5 This is a schematic diagram of the top of the battery cabinet and the cold air guiding structure of the present invention.

[0030] Figure 6 This is a schematic diagram of the bracket structure.

[0031] Figure 7 This is a schematic diagram of the battery box.

[0032] Figure 8 This is a schematic diagram of the middle air duct and the two side air ducts of the present invention.

[0033] In the diagram: Battery cabinet unit 1, vertical air duct 11, battery box 2, bracket 3, buffer part 31, non-buffer part 32, limiting structure 33, top screw structure 34, air inlet 21, battery 22, battery air duct 23, exhaust fan 24, air duct inlet 111, air duct outlet 112, first guide plate 4, second guide plate 5, wall-mounted air conditioner 10, adjustable limiting plate 6, intermediate air duct 12. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0035] like Figures 1 to 8 As shown, this embodiment proposes an energy storage battery cabinet unit. The battery cabinet unit 1 has vertical air ducts 11 on both sides, and the space between the two vertical air ducts 11 is a battery cavity for installing the battery box 2.

[0036] Multiple brackets 3 are bolted to the left and right arms inside the battery box 2. Each bracket 3 has multiple buffer sections 31 and multiple non-buffered sections 32. The battery box 2 is inserted between two brackets 3 and secured by the buffer sections 31. The buffer section 31 can be a welded arc-shaped piece or a stamped arc-shaped structure. Its inherent arc shape makes it easier to absorb assembly tolerances and provides a certain degree of cushioning. Due to the thickness of the buffer section 31, a channel for cold air to enter is left between the non-buffered sections 32 and the battery box 2.

[0037] The bracket 3 is also equipped with a limiting structure 33 at its tail end, such as Figure 6As shown, a wedge-shaped spring-loaded structure can be adopted. After the battery box 2 is installed, the rear end will be interference-locked in the height direction. The bracket 3 is also equipped with a set screw structure 34, which uses nuts and bolts. When the installation depth of the battery box 2 deviates, the position of the battery box 2 can be adjusted by adjusting the tightening length of the bolts. Compared with the traditional solution that relies solely on the front bolts for fixing, this solution adds a lateral and height fixing structure, ensuring that the battery box 2 is firm and does not loosen under impact and jumping during transportation. The rear set screw structure 34 can reduce the stress on the front fixing structure when the battery box 2 is impacted in the length direction.

[0038] The above describes the main structure for fixing the battery box 2 inside the battery cabinet. The buffer part 31 provides an entry channel for cold air to enter the battery box 2. The battery box 2 is also provided with multiple air inlets 21 on both sides corresponding to the channel. Two rows of batteries 22 are arranged side by side inside the battery box 2. A battery air duct 23 is provided between the two rows of batteries 22. An exhaust fan 24 is provided at the front end of the battery air duct 23. When the exhaust fan 24 is turned on, cold air enters the battery air duct 23 from the channel and the air inlets 21 and then dissipates heat from the battery box 2 as a whole.

[0039] The following describes the overall heat dissipation of the entire battery cabinet unit 1. A wall-mounted air conditioner 10 is installed on one or both sides of the battery cabinet unit 1, with its air outlet slightly larger than the top of the unit. The top of the vertical air duct 11 is the air duct inlet 111, and the side has multiple air duct openings 112 corresponding to the battery box 2. A guide plate is also provided, consisting of a first guide plate 4 and a second guide plate 5. The second guide plate 5 is located at the top of the battery cabinet unit 1 and guides cold air into the air duct inlet 111. The first guide plate 4 is inserted into the vertical air duct 11, guiding the cold air at the air duct inlet 111 along the guide plate 4 into the vertical air duct 11. Under the negative pressure of the exhaust fan 24, the cold air from the wall-mounted air conditioner 10, under the action of the guide plates, is directed... Figure 8 The air flows in the indicated direction, guiding the cool air into the high-temperature area inside the battery cabinet unit 1, eliminating the high-temperature area, making the heat dissipation of the batteries 22 inside the battery box 2 more uniform, and making the overall product performance more stable.

[0040] like Figure 3 As shown, an adjustable limiting plate 6 can also be arranged above the battery cabinet unit 1. The adjustable limiting plate 6 is fixedly connected to the top of the battery cabinet unit 1 by bolts. The height can be adjusted according to the heat dissipation effect of the product to adjust the concentration of airflow and ultimately improve the heat dissipation effect of the product.

[0041] The above describes the structure of battery cabinet unit 1. Generally, a battery cabinet is composed of multiple battery cabinet units 1 connected together. Specifically, it consists of at least two battery cabinet units 1. Multiple battery cabinets are arranged in the energy storage container system to maximize the use of the container's internal space, allowing the system to accommodate more power. In this embodiment, wall-mounted air conditioners 10 are installed on both sides of the battery cabinet unit 1. Taking a battery cabinet composed of two battery cabinet units 1 as an example, the vertical air ducts 11 between the two battery cabinet units 1 are interconnected. These two interconnected vertical air ducts 11 form the middle air duct 12 of the battery cabinet, located... The vertical air ducts 11 on both sides of the battery cabinet are side air ducts. The first guide plate 4 is inserted into the side air duct on one side to divide the side air duct into two small air ducts. The middle air duct 12 is inserted into the other side to divide the middle air duct 12 into two small air ducts. This is used to guide the cold air blown out by the wall-mounted air conditioner 10 through the second guide plate 5 into the air duct inlet 111, and then blown into the two small air ducts by the first guide plate 4. Under the negative pressure of the exhaust fan 24, the cold air in the two small air ducts enters the channel and the air inlet 21 through the air duct opening 112 in sequence, and then enters the battery air duct 23 to dissipate heat from the battery box 2.

[0042] In this embodiment, based on the external maintenance energy storage container system, the internal air conditioning and air ducts are eliminated, and wall-mounted air conditioners 10 are used to dissipate heat from the battery cabinets. The battery cabinets are designed with corresponding guide plates, buffers, and limiting structures 33 to guide the cold air. Each battery cabinet is equipped with an independent thermal management environment, resulting in better overall system heat dissipation and lower temperature difference.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An energy storage battery cabinet unit, comprising a battery box installed inside the energy storage battery cabinet unit, wherein an exhaust fan is provided inside the battery box, characterized in that: The battery cabinet unit has vertical air ducts on both side walls. Each vertical air duct has an air inlet at its top and multiple air duct openings corresponding to the battery box on its sides. The battery cabinet unit also has guide plates, specifically a first guide plate and a second guide plate. The second guide plate is located at the top of the battery cabinet unit and guides cold air into the air duct inlet. The first guide plate is inserted into the vertical air duct and guides the cold air at the air duct inlet along the first guide plate into the vertical air duct. Under the negative pressure of the exhaust fan, the cold air in the vertical air duct enters the battery box through the air duct openings for heat dissipation. A battery cavity is located between the two vertical air ducts. The battery cavity has at least one set of bracket assemblies for fixing the battery box on its side wall near the vertical air duct. Each bracket assembly includes two brackets. The bracket includes at least two buffer sections and a non-buffered section located between the buffer sections. The battery box is inserted between the two brackets and pressed and fixed by the buffer sections. A channel for cold air to enter is provided between the side wall of the battery box and the non-buffered section. The battery box has an air inlet on the side wall near the bracket. Two rows of batteries are arranged side by side inside the battery box, and a battery air duct is provided between the two rows of batteries. Under the negative pressure of the exhaust fan, cold air enters the air duct opening, channel, air inlet and battery air duct in sequence for the overall heat dissipation of the battery box.

2. The energy storage battery cabinet unit as described in claim 1, characterized in that: The buffer portion is a welded arc-shaped sheet or a stamped arc-shaped structure.

3. The energy storage battery cabinet unit as described in claim 1, characterized in that: The bracket is also equipped with a limiting structure for interference limiting in the height direction when the battery box is installed.

4. The energy storage battery cabinet unit as described in claim 2, characterized in that: The bracket is also equipped with a top screw structure for adjusting the position of the battery box when there is a deviation in the installation depth.

5. The energy storage battery cabinet unit as described in any one of claims 1-4, characterized in that: The battery cabinet unit is also equipped with an adjustment limit plate above it. A cold air channel is provided between the adjustment limit plate and the battery cabinet unit. The cold air channel is connected to the vertical air duct and is used to adjust the concentration of air volume.

6. An energy storage battery cabinet, characterized in that: It includes at least two battery cabinet units as described in any one of claims 1-4, with vertical air ducts between adjacent battery cabinet units being interconnected. The two interconnected vertical air ducts are the middle air ducts of the battery cabinet, and the vertical air ducts located on both sides of the battery cabinet are the side air ducts. One side of the first guide plate is inserted into the side air duct, and the other side is inserted into the middle air duct.

7. The energy storage battery cabinet as described in claim 6, characterized in that: After the first guide plate is inserted into the side air duct or the middle air duct, it divides the side air duct or the middle air duct into two small air ducts, which are used to guide the cold air located at the air duct inlet to be blown into the two small air ducts along the first guide plate. Under the negative pressure of the exhaust fan, the cold air located in the two small air ducts enters the battery box through the air duct opening.

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