Air-cooled energy storage box

Abstract

The utility model discloses an air cooling energy storage box which comprises a box body, an air inlet is formed in a right side plate of the box body, an air outlet is formed in a left side plate of the box body, a plurality of battery cells which are transversely arranged are arranged in the box body, and a hollow air channel clamping plate is arranged between every two adjacent battery cells in a clamped mode. The plurality of battery cells and the plurality of air channel clamping plates are bundled and fixed through a steel belt, an air guide cover protruding outwards is fixed on the outer side of a left side plate of the box body, the air guide cover covers the air outlet, an air outlet with a downward opening is formed in the bottom of the air guide cover, a draught fan is arranged in the air guide cover, and when the draught fan operates, the air outlet is opened downwards. And external airflow sequentially circulates through the air inlet, the hollowed-out openings of the multiple air duct clamping plates, the air outlet and the exhaust outlet. The battery box can improve the heat exchange efficiency of the battery cells, can reduce the temperature difference between the front and rear battery cells, is not limited by the length of the battery box, and is favorable for improving the energy density of an energy storage system of an electric cabinet or a container.

Description

Technical Field

[0001] This utility model relates to energy storage battery boxes, and more particularly to an air-cooled energy storage box. Background Technology

[0002] Currently, energy storage battery boxes generally use air cooling for temperature reduction. The battery box body is a rectangular structure that extends from front to back. The air duct design is generally a structure where the air enters from the rear of the battery box and exits from the front, or where the air enters from the side of the battery box and exits from the front. For battery boxes with a length greater than 400mm, this air duct design will cause an increase in the temperature difference between the front and rear cells of the battery box, which will affect the cycle life of the battery system. At the same time, the battery box cannot be designed to be too long, which will affect the integration efficiency of the power cabinet and increase the application cost of the product. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an air-cooled energy storage box that can improve the heat exchange efficiency of the battery cells, reduce the temperature difference between the front and rear battery cells, and is not limited by the length of the battery box, in order to address the shortcomings of the existing technology.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0005] An air-cooled energy storage box includes a box body, an air inlet on the right side panel of the box body, an air outlet on the left side panel of the box body, a plurality of horizontally arranged battery cells inside the box body, and perforated air duct clamps sandwiched between adjacent battery cells. The battery cells and the multiple air duct clamps are bundled and fixed together with steel straps. An outwardly raised air guide hood is fixed to the outside of the left side panel of the box body, and the air guide hood covers the air outlet. The bottom of the air guide hood has a downward-facing exhaust port. A fan is installed inside the air guide hood. When the fan is running, external airflow flows sequentially through the air inlet, the perforated openings of the multiple air duct clamps, the air outlet, and the exhaust port.

[0006] Preferably, the air inlet is a grid-shaped air inlet.

[0007] Preferably, the fan is a crossflow fan extending along the length of the air outlet.

[0008] Preferably, a sealing gasket is sandwiched between the air guide cover and the left side plate.

[0009] Preferably, the top of the air guide shroud is provided with an air guide plate that slopes downwards.

[0010] Preferably, multiple battery cells and multiple air duct clamps are bundled and fixed together by two steel straps.

[0011] Preferably, the air duct clamp includes two clamp bodies that are parallel to each other and a plurality of V-shaped partitions formed between the two clamp bodies, and a triangular hollow opening is formed between the V-shaped partitions and the clamp bodies.

[0012] In the air-cooled energy storage box disclosed in this utility model, the air outlet and air inlet are respectively provided on the left and right side plates of the box body. At the same time, a wind guide shroud covering the outside of the air outlet is fixedly installed on the left side plate. One function of the wind guide shroud is to accommodate the fan, and another function is to guide the airflow outward through the downward-facing exhaust port, so as to avoid the exhaust airflow directly blowing on the inner wall of the cabinet and affecting the air outlet efficiency. Meanwhile, under the operation of the fan, air is drawn in from the air inlet, and the external airflow flows through the air inlet, the hollow openings of multiple air duct clamps, the air outlet, and the exhaust port in sequence. The airflow passing through the hollow openings in the air duct clamps is used to cool down the battery cells. Compared with the prior art, this utility model adopts the air intake on the right and the air exhaust on the left to achieve air cooling, which can effectively improve the heat exchange efficiency of the battery cells, reduce the temperature difference between the front and rear battery cells, and is not limited by the length of the battery box in practical applications. It is also conducive to the reasonable configuration of the energy storage box in the cabinet and better meets the application requirements. Attached Figure Description

[0013] Figure 1 This is an exploded view of the air-cooled energy storage box of this utility model;

[0014] Figure 2 This utility model provides a three-dimensional air-cooled energy storage box. Figure 1 ;

[0015] Figure 3 This utility model provides a three-dimensional air-cooled energy storage box. Figure 2 ;

[0016] Figure 4 This utility model provides a three-dimensional air-cooled energy storage box. Figure 3 ;

[0017] Figure 5 This is a cross-sectional view of the air-cooled energy storage box along the center line of the air duct clamp;

[0018] Figure 6 This is a schematic diagram of the internal air duct of an air-cooled energy storage box. Detailed Implementation

[0019] The present invention will now be described in more detail with reference to the accompanying drawings and embodiments.

[0020] This utility model discloses an air-cooled energy storage box, combined with Figures 1 to 6As shown, it includes a housing 1, with an air inlet 10 on the right side panel and an air outlet 12 on the left side panel 11. Multiple horizontally arranged battery cells 2 are located inside the housing 1, with perforated air duct clamps 3 sandwiched between adjacent battery cells 2. The battery cells 2 and the air duct clamps 3 are secured by steel straps 4. An outwardly protruding air guide hood 5 is fixed to the outside of the left side panel 11 of the housing 1, covering the air outlet 12. The bottom of the air guide hood 5 has a downward-facing exhaust port 50. A fan 51 is located inside the air guide hood 5. When the fan 51 operates, external airflow flows sequentially through the air inlet 10, the perforated openings of the multiple air duct clamps 3, the air outlet 12, and the exhaust port 50.

[0021] In the above structure, the air outlet 12 and the air inlet 10 are respectively provided on the left and right side panels of the housing 1. A guide hood 5, covering the outside of the air outlet 12, is fixedly installed on the left side panel 11. One function of the guide hood 5 is to house the fan 51; another function is to direct the airflow outward through the downward-facing exhaust port 50, preventing the exhaust air from directly blowing onto the inner wall of the electrical cabinet and affecting the airflow efficiency. Simultaneously, under the operation of the fan 51, air is drawn in from the air inlet 10, and the external airflow... The air flows sequentially through the air inlet 10, the perforations of the multiple air duct clamps 3, the air outlet 12, and the exhaust outlet 50. The airflow passing through the perforations in the air duct clamps 3 cools the battery cell. Compared with the prior art, this utility model adopts a right-side air intake and left-side air exhaust method to achieve air cooling, which can effectively improve the heat exchange efficiency of the battery cell, reduce the temperature difference between the front and rear battery cells, and is not limited by the length of the battery box in practical applications. This is conducive to the reasonable configuration of the energy storage box in the cabinet and better meets the application requirements.

[0022] Please see Figure 1 and Figure 3 In this embodiment, the air inlet 10 is a grid-shaped air inlet.

[0023] As a preferred embodiment, the fan 51 is a crossflow fan extending along the length of the air outlet 12. In this embodiment, a crossflow fan and a guide shroud are arranged on the right side of the battery box. The most significant feature of the crossflow fan is that the fluid flows through the fan impeller twice, flowing in radially and then out radially again. The intake and exhaust directions are on the same plane, and the exhaust gas is evenly distributed along the width of the fan. Furthermore, because the crossflow fan exhausts air radially and the fan impeller can be made very small, the fan can be evenly arranged on the side of the battery module, occupying less space. In practical applications, this ensures consistent airflow to each battery cell, improving the uniformity of heat dissipation.

[0024] Furthermore, a sealing gasket 52 is sandwiched between the air guide shroud 5 and the left side plate 11. In this embodiment, the crossflow fan is fixed inside the air guide shroud, and the air guide shroud is fitted to the side of the housing. The two are sealed by foam gaskets, which can effectively prevent air leakage.

[0025] To improve the air guiding efficiency of the air guide shroud 5 and ensure that the airflow is transported along a predetermined path, in this embodiment, in combination with... Figures 1 to 4 As shown, the top of the air guide shroud 5 is provided with an air guide plate 53 that slopes downwards. For practical applications, please refer to... Figure 6 When the crossflow fan rotates, it exhausts air downwards. The cold air enters the battery box from the right side and then enters the air duct clamp inside the module. Most of the battery's heat is exchanged with the cold air in this area. The hot air, after absorbing heat, gathers in the air guide shroud and is then discharged to the outside of the battery box by the crossflow fan.

[0026] Please see Figure 1 Multiple battery cells 2 and multiple air duct clamps 3 are bundled and fixed together by two upper and lower steel straps 4. In this embodiment, the battery cells and air duct clamps are arranged sequentially, and the entire battery module is fixed by the two upper and lower steel straps and the front and rear end plates. The air duct clamps are hollowed out in the middle to form internal heat dissipation air ducts, which can increase the heat exchange area of ​​the battery cells and increase the heat exchange efficiency. On this basis, the top of the module is connected to the battery cell terminals by laser welding through aluminum busbars, and voltage and temperature acquisition harnesses are arranged there. The top of the module is an insulating sheet.

[0027] In this embodiment, two sets of modules, bundled together as described above, can be installed inside the housing 1. The two modules are fixed with screws, and the high-voltage terminals of the modules and the housing are connected via copper busbars. Furthermore, the battery management unit is fixed to the front panel of the battery box, and maintenance of the battery management unit is conveniently performed through a maintenance window.

[0028] For details regarding the specific structure of the air duct clamp 3, please refer to [link / reference]. Figure 5 The air duct clamp 3 includes two parallel clamp bodies 30 and multiple V-shaped partitions 31 formed between the two clamp bodies 30. A triangular perforation 32 is formed between the V-shaped partitions 31 and the clamp bodies 30. The air duct clamp 3 is a one-piece structure. The multiple V-shaped partitions 31 not only create multiple triangular perforations 32, but also increase the load-bearing strength of the air duct clamp 3, making the overall structure after the multiple battery cells 2 and the multiple air duct clamps 3 are bundled together more stable and reliable.

[0029] Compared to existing technologies, this invention employs a crossflow fan to ensure uniform airflow throughout the battery module, reducing temperature differences between cells and thus improving the cycle life of the battery system. Simultaneously, the parallel design of the air intake and exhaust ducts on the side of the battery box, and the airflow channels between each cell, reduces the path of cold air within the box, thereby reducing the temperature difference between the inlet and outlet air, and also lowering the temperature difference between cells. Furthermore, this invention effectively utilizes a long module design for heat dissipation while maintaining excellent heat dissipation performance. Such long modules reduce the use of end plates, steel strips, and other materials, improving system integration and increasing the energy density of the cabinet or containerized energy storage system, thereby reducing system application costs.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. All modifications, equivalent substitutions or improvements made within the technical scope of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. An air-cooled energy storage box, characterized in that, The enclosure includes a housing (1), with an air inlet (10) on the right side panel and an air outlet (12) on the left side panel (11). The housing (1) contains multiple horizontally arranged battery cells (2), with perforated air duct clamps (3) sandwiched between adjacent battery cells (2). The battery cells (2) and air duct clamps (3) are secured by steel straps (4). The left side panel (11) of the housing (1)... An outwardly raised air guide hood (5) is fixed on the outside, the air guide hood (5) covers the air outlet (12), the bottom of the air guide hood (5) is provided with a downward-facing exhaust port (50), and a fan (51) is provided inside the air guide hood (5). When the fan (51) is running, the external airflow flows through the air inlet (10), the hollow openings of multiple air duct clamps (3), the air outlet (12) and the exhaust port (50) in sequence.

2. The air-cooled energy storage box as described in claim 1, characterized in that, The air inlet (10) is a grid-shaped air inlet.

3. The air-cooled energy storage box as described in claim 1, characterized in that, The fan (51) is a crossflow fan that extends along the length of the air outlet (12).

4. The air-cooled energy storage box as described in claim 1, characterized in that, A sealing gasket (52) is sandwiched between the air guide shroud (5) and the left side plate (11).

5. The air-cooled energy storage box as described in claim 1, characterized in that, The top of the air guide shroud (5) is provided with an air guide plate (53) that slopes downwards.

6. The air-cooled energy storage box as described in claim 1, characterized in that, Multiple battery cells (2) and multiple air duct clamps (3) are bundled and fixed by two steel straps (4) on the top and bottom.

7. The air-cooled energy storage box as described in claim 1, characterized in that, The air duct clamp (3) includes two clamp bodies (30) that are parallel to each other and a plurality of V-shaped partitions (31) formed between the two clamp bodies (30). A triangular cutout (32) is formed between the V-shaped partitions (31) and the clamp bodies (30).

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