Air-cooling heat dissipation structure of energy storage system

Abstract

The utility model discloses an energy storage system air cooling heat dissipation structure, which comprises a heat dissipation structure, the heat dissipation structure comprises an air cooling piece, the air cooling piece is arranged at the rear end of the exterior of a cabinet body, an air channel flowing through a first module and a second module is further arranged in the cabinet body, heat dissipation plates are arranged on the left and right side walls of the first module and the second module, and the heat dissipation plates are arranged on the left and right side walls of the first module and the second module. A plurality of through holes are evenly formed in the heat dissipation plate, fans are arranged on the side walls of the front ends of the first module and the second module, and air in the air channel enters the inner side of the heat dissipation plate through the through holes, makes contact with the first module and the second module and then is pumped out by the fans. According to the heat dissipation structure, the fan drives cooling gas to flow along the air duct, and cold air in the air duct enters the inner side of each heat dissipation plate from the through holes, so that the cold air is pumped out after being in contact with each battery cell module, uniform heat dissipation of each battery cell module is realized, and the consistency of the temperature of the battery pack is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of heat dissipation technology of energy storage systems, and particularly relates to an air-cooled heat dissipation structure for energy storage systems. Background Technology

[0002] As a key technology for balancing power supply and demand and improving energy efficiency, the performance stability and operating efficiency of energy storage systems have attracted much attention; and the heat dissipation structure of energy storage systems is an important part of ensuring the stable operation of energy storage systems, so the choice of its method is even more crucial.

[0003] Currently, the mainstream heat dissipation methods for energy storage systems on the market are mainly divided into two types: air cooling and liquid cooling.

[0004] Liquid cooling has the advantages of high heat dissipation efficiency, good temperature uniformity, and precise temperature control. However, its heat exchange through refrigerant carries the risk of liquid leakage, and the high overall equipment cost and maintenance difficulties make it unsuitable for some remote areas or areas with strict safety controls.

[0005] The existing air-cooling heat dissipation method generally involves setting up air ducts around the battery pack inside the cabinet so that the cooling air carries away the heat around the battery pack as it flows through the air ducts. However, the battery pack usually includes multiple sub-modules arranged in parallel. Cooling only around the outer periphery of the overall battery module cannot guarantee that each sub-module receives the same heat dissipation effect, resulting in uneven temperature distribution among the sub-modules. Utility Model Content

[0006] This utility model addresses the problems in the prior art by proposing the following technical solution:

[0007] This utility model provides an air-cooled heat dissipation structure for an energy storage system, comprising:

[0008] Cabinet;

[0009] A battery pack, which is located inside the cabinet, includes a module one and a module two arranged side by side on the left and right with a gap between them;

[0010] The heat dissipation structure includes an air-cooled component located at the rear exterior of the cabinet. An air duct is also provided inside the cabinet to flow through modules one and two. Heat dissipation plates are provided on the left and right side walls of modules one and two, with several through holes evenly distributed on the heat dissipation plates. Fans are provided on the front side walls of modules one and two. Air in the air duct enters the inner side of the heat dissipation plate through the through holes, contacts modules one and two, and is then drawn out by the fans.

[0011] As a preferred embodiment of the above technical solution, the air duct includes air duct one, air duct two and air duct three connected in sequence. Air duct one is set at the inner top of the cabinet, air duct two is set along the height direction of the battery pack, and air duct three is the gap between the front side wall, bottom and rear side wall of the battery pack and the corresponding inner side wall of the cabinet.

[0012] As a preferred embodiment of the above technical solution, the output end of the air-cooled component is provided with an air inlet, the air inlet is connected to the first air duct, and the third air duct is connected to the input end of the air-cooled component.

[0013] As a preferred embodiment of the above technical solution, the second air duct comprises three parts: the gap between module one and module two, the gap between the sidewalls of module one and module two equipped with heat dissipation plates and the sidewall of the cabinet.

[0014] As a preferred embodiment of the above technical solution, the air duct includes three parts: the gap between the front end of the battery pack and the side wall of the cabinet, the gap between the bottom end of the battery pack and the side wall of the cabinet, and the gap between the rear end of the battery pack and the side wall of the cabinet. The gap between the rear end of the battery pack and the side wall of the cabinet is connected to the input end of the air-cooling component.

[0015] As a preferred embodiment of the above technical solution, the cross-sectional area of ​​the gap between module one and module two located in the middle of the air duct is larger than the cross-sectional area of ​​the gap between the other two parts of the air duct.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention utilizes a heat dissipation structure where a fan drives cooling gas to flow along the air duct, allowing the cold air in the air duct to enter the inner side of each heat dissipation plate through the through holes. The cold air is then drawn out after contacting each battery cell module, achieving uniform heat dissipation for each battery cell module and thus ensuring the consistency of the battery pack temperature. Attached Figure Description

[0018] Figure 1 The diagram shown is an overall schematic of the energy storage system in the embodiment;

[0019] Figure 2 The diagram shown is a schematic of the battery pack in the embodiment;

[0020] Figure 3 The diagram shown is a front view of the energy storage system in the embodiment;

[0021] Figure 4 What is shown is Figure 3 Schematic diagram of the AA section structure;

[0022] Figure 5 The diagram shown is a side view of the energy storage system in the embodiment;

[0023] Figure 6 What is shown is Figure 5 Schematic diagram of the cross-sectional structure of the middle BB;

[0024] Figure 7 What is shown is Figure 5 Schematic diagram of the cross-sectional structure of the middle CC section;

[0025] Attached reference numerals: 10, cabinet; 20, battery pack; 31, air-cooled component; 32, air inlet; 33, air duct one; 34, air duct two; 35, air duct three; 41, heat sink; 42, through hole; 43, fan. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0027] Example

[0028] like Figure 1 , Figure 2 As shown, Figure 1 The diagram shown is an overall schematic of the energy storage system in the embodiment; Figure 2 The diagram shown is a schematic of the battery pack in the embodiment;

[0029] This device includes:

[0030] The cabinet 10, battery pack 20, and heat dissipation structure are provided. The battery pack 20 is located inside the cabinet 10, and the heat dissipation structure is located on the cabinet 10.

[0031] The heat dissipation structure adopts an air-cooled heat dissipation method. When the battery pack 20 generates heat during the charging and discharging process, the heat dissipation structure allows the air around the battery pack 20 to flow, thereby carrying away the heat of the battery pack 20 and circulating it, thereby achieving heat dissipation and cooling of the battery pack 20 and other related components.

[0032] like Figure 1 , Figure 2 , Figure 4 As shown, Figure 1 The diagram shown is an overall schematic of the energy storage system in the embodiment; Figure 2 The diagram shown is a schematic of the battery pack in the embodiment. Figure 4 What is shown is Figure 3 Schematic diagram of the AA section structure;

[0033] The heat dissipation structure includes an air-cooled component 31, which is located at the rear of the cabinet 10. The cabinet 10 has an air duct connected to the air-cooled component 31. Cooling air is output from the output end of the air-cooled component 31. The cooling air enters the air duct and contacts the battery pack 20. The air after heat exchange enters the air-cooled component 31 for circulation.

[0034] Specifically, such as Figure 4 As shown, a represents the front end of cabinet 10, and b represents the rear end of cabinet 10;

[0035] The air-cooled component 31 is a source of cooling air. In this embodiment, the air-cooled component 31 is an air conditioner. The air-cooled component 31 outputs cooling air, which enters the air duct to exchange heat with the battery pack 20. The air after heat exchange enters the air-cooled component 31 to achieve circulation.

[0036] like Figure 2 As shown, Figure 2 The diagram shown is a schematic of the battery pack in the embodiment;

[0037] The battery pack 20 includes a module 1 and a module 2 arranged side by side with a gap between them. Both modules 1 and 2 have heat sinks 41 on their left and right side walls. The heat sinks 41 have several through holes 42 evenly distributed on them. Both modules 1 and 2 have fans 43 on their front side walls. Air in the air duct enters through the through holes 42 and is drawn out by the fans 43 after contacting modules 1 and 2.

[0038] Both Module 1 and Module 2 include several vertically arranged battery cell modules. The battery cell modules are installed on the inner side of the heat sink 41 via a guide rail, and there is a gap between the battery cell modules and the inner sidewall of the heat sink 41.

[0039] The through holes 42 are arranged in multiple rows corresponding to the position of each battery cell module, and the fans 43 are arranged in multiple rows corresponding to the position of each battery cell module.

[0040] Specifically, the battery pack 20 is equipped with a fan 43 at one end, which is installed at the front end of the cabinet 10.

[0041] The fan 43 is designed to drive the cooling gas to flow along the air duct. When the fan 43 is turned on, the cold air in the air duct enters the inside of each heat sink 41 through the through hole 42 and is drawn out after contacting each cell module, so as to achieve uniform heat dissipation for each cell module and thus ensure the temperature consistency of the battery pack 20.

[0042] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, Figure 3 The diagram shown is a front view of the energy storage system in the embodiment; Figure 4 What is shown is Figure 3 Schematic diagram of the AA section structure; Figure 5 The diagram shown is a side view of the energy storage system in the embodiment; Figure 6 What is shown is Figure 5 Schematic diagram of the cross-sectional structure of the middle BB; Figure 7 What is shown is Figure 5 Schematic diagram of the cross-sectional structure of the middle CC section;

[0043] The air duct includes air duct 1 33, air duct 2 34 and air duct 35 connected in sequence. Air duct 1 33 is set at the inner top of the cabinet 10. Air duct 2 34 is set along the height direction of the battery pack 20. Air duct 3 35 is the gap between the front side wall, bottom and rear side wall of the battery pack 20 and the corresponding inner side wall of the cabinet 10.

[0044] The output end of the air-cooled component 31 is provided with an air inlet 32, which is connected to the first air duct 33, and the third air duct 35 is connected to the input end of the air-cooled component 31.

[0045] The heat sink 41 is located in the second air duct 34. After the cold air is output from the output end of the air-cooled component 31, it enters the first air duct 33 and the second air duct 34 in sequence. Then, the cold air in the second air duct 34 enters the inside of the heat sink 41 through the through hole 42. After the cold air comes into contact with the battery cell module, it is drawn out to the third air duct 35. The third air duct 35 allows the heat-exchanged gas to enter from the input end of the air-cooled component 31 to achieve circulation.

[0046] Specifically, the second air duct 34 includes three parts: the gap between module one and module two, the gap between the side walls of module one and module two where heat dissipation plates 41 are provided and the side wall of cabinet 10.

[0047] The three channels of the second air duct 34 allow the cold air to be evenly distributed on the left and right sides of the first and second modules, achieving uniform heat dissipation.

[0048] Furthermore, since the gap between Module 1 and Module 2 located in the middle simultaneously supplies air to Module 1 and Module 2 on both the left and right sides, the cross-sectional area of ​​this gap is larger than that of the other two gaps. This ensures that, under the same wind pressure, a larger volume of air is delivered to the middle gap, further ensuring the uniformity of the temperature of Module 1 and Module 2.

[0049] The air duct 35 consists of three parts: the gap between the front end of the battery pack 20 and the side wall of the cabinet 10, the gap between the bottom end of the battery pack 20 and the side wall of the cabinet 10, and the gap between the rear end of the battery pack 20 and the side wall of the cabinet 10; wherein the gap between the rear end of the battery pack 20 and the side wall of the cabinet 10 is connected to the input end of the air-cooling component 31.

[0050] The fan 43 causes the gas inside the heat sink 41 to first flow to the gap between the front end of the battery pack 20 and the side wall of the cabinet 10, then through the gap between the bottom end of the battery pack 20 and the side wall of the cabinet 10, and finally into the gap between the rear end of the battery pack 20 and the side wall of the cabinet 10 and return to the air-cooled component 31.

[0051] To ensure that the airflow inside the system is delivered according to the designed air ducts, sealing cotton is designed at the connection of each air duct to reduce the system's heat dissipation energy consumption and ensure that the system temperature is within a relatively stable range.

[0052] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A wind-cooled heat dissipation structure for an energy storage system, characterized in that, include: Cabinet (10); Battery pack (20), the battery pack (20) is disposed inside the cabinet (10), the battery pack (20) includes module one and module two arranged side by side on the left and right with a gap between them; The heat dissipation structure includes an air-cooled component (31), which is located at the rear end of the cabinet (10). The cabinet (10) also has an air duct that flows through module one and module two. The left and right side walls of module one and module two are provided with heat dissipation plates (41). Several through holes (42) are evenly opened on the heat dissipation plates (41). The front side walls of module one and module two are provided with fans (43). The air in the air duct enters the inside of the heat dissipation plate (41) through the through holes (42) and comes into contact with module one and module two before being drawn out by the fans (43).

2. The air-cooled heat dissipation structure for an energy storage system according to claim 1, characterized in that, The air duct includes air duct one (33), air duct two (34) and air duct three (35) connected in sequence. Air duct one (33) is set at the inner top of the cabinet (10). Air duct two (34) is set along the height direction of the battery pack (20). Air duct three (35) is the gap between the front side wall, bottom and rear side wall of the battery pack (20) and the corresponding inner side wall of the cabinet (10).

3. The air-cooled heat dissipation structure for an energy storage system according to claim 2, characterized in that, The output end of the air-cooled component (31) is provided with an air inlet (32), the air inlet (32) is connected to the first air duct (33), and the third air duct (35) is connected to the input end of the air-cooled component (31).

4. The air-cooled heat dissipation structure for an energy storage system according to claim 2, characterized in that, The second air duct (34) includes three parts: the gap between module one and module two, the gap between the side wall of module one and module two with heat dissipation plate (41) and the side wall of cabinet (10).

5. The air-cooled heat dissipation structure for an energy storage system according to claim 2, characterized in that, The air duct (35) consists of three parts: the gap between the front end of the battery pack (20) and the side wall of the cabinet (10), the gap between the bottom end of the battery pack (20) and the side wall of the cabinet (10), and the gap between the rear end of the battery pack (20) and the side wall of the cabinet (10). The gap between the rear end of the battery pack (20) and the side wall of the cabinet (10) is connected to the input end of the air-cooling component (31).

6. The air-cooled heat dissipation structure for an energy storage system according to claim 4, characterized in that, The cross-sectional area of ​​the gap between module one and module two in the middle position of the second air duct (34) is larger than the cross-sectional area of ​​the gap between the other two parts of the second air duct (34).

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