Sodium ion battery energy storage system

Abstract

The utility model relates to the technical field of energy storage cabinet structures, in particular to a sodium ion battery energy storage system which comprises a battery cabinet, an air cooling unit, a water cooling unit and a water cooling circulation pipeline, a plurality of sodium ion battery packs and a composite heat dissipation plate are installed in the battery cabinet, the air cooling unit is installed at the bottom of the battery cabinet, and the water cooling unit is installed at the bottom of the battery cabinet. A water-cooling unit is mounted at the top of the battery cabinet, a water-cooling circulating pipeline is arranged on the battery cabinet, and the water-cooling circulating pipeline is connected with the water-cooling unit and the composite heat dissipation plate to form a net-shaped circulating cooling loop. The sodium ion battery energy storage system disclosed by the utility model is excellent in heat dissipation effect, good in heat dissipation balance and wide in scene application range.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage cabinet structures, and particularly relates to a sodium-ion battery energy storage system. Background Art

[0002] With the rapid development of the new energy energy storage industry, industrial and commercial energy storage outdoor cabinets are increasingly favored by the market. During the power supply process of the energy storage cabinet, a large amount of heat is generated by the battery modules, especially in high-temperature environments. If the heat cannot be effectively dissipated, it will lead to a decrease in the service life of the battery and affect the normal use of the energy storage cabinet. In addition, the current heat dissipation methods for sodium-ion battery energy storage cabinets are usually air cooling or liquid cooling. However, both of these heat dissipation methods have their own advantages and disadvantages, and the heat dissipation effect of a single heat dissipation method is not good. Moreover, when different cooling methods are required, different energy storage cabinets need to be replaced, which reduces work efficiency and increases work costs. Therefore, there is an urgent need for a sodium-ion battery energy storage system that combines air cooling and liquid cooling to solve the above technical problems. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a sodium-ion battery energy storage system to solve the problems of poor heat dissipation effect, uneven heat dissipation, and limited applicable scenarios in the existing sodium-ion battery energy storage system.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A sodium-ion battery energy storage system includes a battery cabinet, an air-cooling unit, a water-cooling unit, and a water-cooling circulation pipeline. It is characterized in that: a number of sodium-ion battery packs and composite heat dissipation plates are installed inside the battery cabinet; the air-cooling unit is installed at the bottom of the battery cabinet, the water-cooling unit is installed at the top of the battery cabinet, the water-cooling circulation pipeline is arranged on the battery cabinet, and the water-cooling circulation pipeline is connected to the water-cooling unit and the composite heat dissipation plate.

[0006] Further, the battery cabinet includes a framework, a left side plate, a right side plate, a front side plate, and a rear side plate. The front side plate and the rear side plate are respectively installed on the front and rear sides of the framework, and the left side plate and the right side plate are respectively installed on the left and right sides of the framework; the battery cabinet is divided into several layers by partitions, and a sodium-ion battery pack is installed on each layer, and a composite heat dissipation plate is arranged on the sodium-ion battery pack.

[0007] Further, a number of ventilation holes are provided on the partition, and the ventilation holes are round holes, square holes or polygonal holes.

[0008] Further, the composite heat dissipation plate is composed of a horizontal heat dissipation plate and a vertical heat dissipation plate, showing a "mountain" shape; a number of ventilation holes are provided on the horizontal heat dissipation plate, and "S"-shaped cavity circuits are arranged inside the vertical heat dissipation plate and the horizontal heat dissipation plate, and the "S"-shaped cavity circuits are communicated with the water-cooling circulation pipeline.

[0009] Furthermore, a liquid cooling box is provided at the top of the battery cabinet. The liquid cooling box includes a bottom plate, a top plate, a front cover plate, a rear cover plate, a right cover plate, and an air duct assembly. The front cover plate and the rear cover plate are respectively installed on the front and rear sides of the liquid cooling box. An air duct assembly is provided on the left side of the liquid cooling box. The right cover plate is installed on the right side of the liquid cooling box. The bottom plate and the top plate are respectively disposed at the bottom end and the top end of the liquid cooling box. A water cooling unit is installed inside the liquid cooling box.

[0010] Furthermore, the air duct assembly is composed of an air duct grid, an air duct, and a fixing plate. The air duct grid and the air duct are installed on the fixing plate by screws. The fixing plate is installed on the left side of the liquid cooling box.

[0011] Furthermore, the water cooling circulation pipeline includes a horizontal water cooling pipe, a water inlet pipe, and a water return pipe. The water cooling unit forms a mesh-shaped circulating cooling circuit with the horizontal water cooling pipe, the water inlet pipe, the composite heat dissipation plate, and the water return pipe.

[0012] Furthermore, a liquid filling pot is provided on the right side of the water cooling unit. The liquid filling pot is connected to the water cooling circulation pipeline.

[0013] Furthermore, the air cooling unit includes a fan outer frame and a fan; the fan is installed on the fan outer frame, and the number of fans is one or more.

[0014] The utility model has the following beneficial effects:

[0015] 1. An air cooling unit is installed at the bottom of the battery cabinet of the utility model, and a water cooling unit is installed at the top. Through the mutual cooperation and supplementary heat dissipation between the air cooling component and the water cooling component, the energy storage cabinet has excellent heat dissipation balance, and air cooling and liquid cooling can be independently selected, thereby broadening the usage scenarios of the energy storage cabinet.

[0016] 2. The water cooling circulation pipeline provided on the battery cabinet of the utility model is connected to the water cooling unit and the composite heat dissipation plate, and can form a mesh-shaped circulating cooling circuit, thereby effectively improving the liquid cooling effect and heat dissipation uniformity of the sodium-ion battery energy storage system.

[0017] 3. The composite heat dissipation plate of the utility model is provided with a U-shaped cold water circuit, and ventilation holes are provided on the horizontal heat dissipation plate. The vertical heat dissipation plate is embedded in the gaps between each sodium-ion battery pack, so that the composite heat dissipation plate can achieve the dual heat dissipation effects of air cooling and liquid cooling, and as much as possible, the sodium-ion battery packs are completely cooled. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the utility model;

[0019] Figure 2 is a schematic diagram of the composite heat dissipation plate of the utility model.

[0020] In the attached drawings, 1 is a battery cabinet, 11 is a framework, 12 is a left side plate, 13 is a right side plate, 14 is a front side plate, 15 is a rear side plate, 2 is an air-cooling unit, 21 is a fan outer frame, 22 is a fan, 3 is a water-cooling unit, 4 is a water-cooling circulation pipeline, 41 is a water-cooling pipe, 42 is a water inlet pipe, 43 is a water return pipe, 5 is a sodium-ion battery pack, 6 is a composite heat dissipation plate, 61 is a horizontal heat dissipation plate, 62 is a vertical heat dissipation plate, 63 is a ventilation hole, 64 is an "S"-shaped cavity loop, 7 is a partition board, 8 is a liquid-cooling box, 81 is a bottom plate, 82 is a top plate, 83 is a front cover plate, 84 is a rear cover plate, 85 is a right cover plate, 86 is an air duct assembly, 861 is an air duct grid, 862 is an air duct, 863 is a fixing plate, and 9 is a liquid replenishing pot. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] As Figure 1 described, a sodium-ion battery energy storage system includes a battery cabinet 1, an air-cooling unit 2, a water-cooling unit 3, and a water-cooling circulation pipeline 4. It is characterized in that: a plurality of sodium-ion battery packs 5 and a composite heat dissipation plate 6 are installed inside the battery cabinet 1; the air-cooling unit 2 is fixedly installed at the bottom of the battery cabinet 1, the water-cooling unit 3 is fixedly installed at the top of the battery cabinet 1, the water-cooling circulation pipeline 4 is arranged on the battery cabinet 1, and the water-cooling circulation pipeline 4 is connected to the water-cooling unit 3 and the composite heat dissipation plate 6.

[0023] The air-cooling unit 2 includes a fan outer frame 21 and a fan 22; the fan 22 is installed on the fan outer frame 21, and the number of fans is one or more. The fan 22 sends fresh outside air into the battery cabinet and sends the high-temperature air inside the cabinet out. After liquid-cooling circulation, the cooling and heat dissipation of the battery cabinet 1 and the sodium-ion battery pack 5 are realized.

[0024] The battery cabinet 1 includes a framework 11, a left side plate 12, a right side plate 13, a front side plate 14, and a rear side plate 15. The framework 11 is welded by steel. The front side plate 14 and the rear side plate 15 are respectively installed on the front and rear sides of the framework 11, and the left side plate 12 and the right side plate 13 are respectively installed on the left and right sides of the framework 11. The battery cabinet 1 is divided into several layers by a partition plate 7. The partition plate 7 is a stainless steel plate, and there are several ventilation holes on the partition plate 7. The ventilation holes are round holes, square holes or polygonal holes, which can make the air in the energy storage cabinet circulate and is beneficial to the ventilation and heat dissipation of the sodium-ion battery pack 5. The sodium-ion battery packs 5 are evenly placed at intervals on the partition plate 7, and a composite heat dissipation plate 6 is arranged on the sodium-ion battery pack 5.

[0025] As Figure 2 shown, the composite heat dissipation plate 6 is composed of a horizontal heat dissipation plate 61 and a vertical heat dissipation plate 62. The vertical heat dissipation plate 62 is perpendicularly welded to the horizontal heat dissipation plate 61, showing a "mountain" shape. The horizontal heat dissipation plate 61 is arranged at the bottom of the sodium-ion battery pack 5, and the vertical heat dissipation plate 62 is embedded in the gaps between adjacent sodium-ion batteries. If the number of sodium-ion batteries in each sodium-ion battery module is n, then the number of the vertical heat dissipation plates 62 is n + 1. There are several ventilation holes 63 on the horizontal heat dissipation plate 61 for the ventilation and heat dissipation of the sodium-ion battery. Both the vertical heat dissipation plate 62 and the horizontal heat dissipation plate 61 are internally provided with an "S"-shaped cavity loop 64, and the "S"-shaped cavity loop 64 communicates with the water-cooling circulation pipeline 4 to form a continuous liquid-cooling channel.

[0026] A liquid-cooling box 8 is arranged at the top of the battery cabinet 1. The liquid-cooling box 8 includes a bottom plate 81, a top plate 82, a front cover plate 83, a rear cover plate 84, a right cover plate 85, and a duct assembly 86. The front cover plate 83 and the rear cover plate 84 are respectively installed on the front and rear sides of the liquid-cooling box 8. A duct assembly 86 is arranged on the left side of the liquid-cooling box 8 for cooling the high-temperature water in the liquid-cooling loop. The duct assembly 86 is composed of a duct grid 861, a duct 862, and a fixing plate 863. The duct grid 861 and the duct 862 are installed on the fixing plate 863 by screws, and the fixing plate 863 is installed on the left side of the liquid-cooling box 8. The right cover plate 85 is installed on the right side of the liquid-cooling box 8. The bottom plate 81 and the top plate 82 are respectively arranged at the bottom end and the top end of the liquid-cooling box 8. A water-cooling unit 3 is installed inside the liquid-cooling box 8. A liquid filling pot 9 is arranged on the right side of the water-cooling unit 3. The liquid filling pot 9 is connected to the water-cooling circulation pipeline 4, and the cooling water can be supplemented at any time to ensure the continuous circulation of the liquid cooling in the system.

[0027] The water-cooling circulation pipeline 4 includes a horizontal water-cooling pipe 41, a water inlet pipe 42, and a water return pipe 43. The water-cooling unit 3 and the horizontal water-cooling pipe 41, the water inlet pipe 42, the composite heat dissipation plate 6, and the water return pipe 43 form a network circulation cooling circuit. One end of the horizontal water-cooling pipe 41 is connected to the water-cooling unit 3, and the other end of the horizontal water-cooling pipe 41 returns to the water-cooling unit 3 through the cavity circuit in the water inlet pipe 42, the composite heat dissipation plate 6, and the water return pipe 43, so as to achieve global cooling and ensure the cooling effect and heat dissipation balance of the system.

[0028] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. It should be pointed out that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present invention should be regarded as the protection scope of the present invention. Each component not clearly defined in this embodiment can be realized by the prior art.

Claims

1. A sodium ion battery energy storage system, comprising a battery cabinet, an air cooling unit, a water cooling unit, and a water cooling circulation pipeline, characterized in that: A plurality of sodium ion battery packs and a composite heat sink are installed inside the battery cabinet; an air cooling unit is installed at the bottom of the battery cabinet, a water cooling unit is installed at the top of the battery cabinet, and a water cooling circulation pipeline is arranged on the battery cabinet, and the water cooling circulation pipeline is connected to the water cooling unit and the composite heat sink.

2. A sodium ion battery energy storage system according to claim 1, characterized in that: The battery cabinet comprises a frame, a left side panel, a right side panel, a front side panel, and a rear side panel. The front side panel and the rear side panel are respectively installed on the front and rear sides of the frame, and the left side panel and the right side panel are respectively installed on the left and right sides of the frame. The battery cabinet is divided into several layers by partitions, and each layer is installed with a sodium ion battery pack, and a composite heat dissipation plate is arranged on the sodium ion battery pack.

3. A sodium ion battery energy storage system according to claim 2, characterized in that: The partition is provided with a plurality of ventilation holes, which are circular holes, square holes or polygonal holes.

4. A sodium ion battery energy storage system according to claim 2, characterized in that: The composite heat sink is composed of a horizontal heat sink and a vertical heat sink, and is in the shape of a "mountain"; a plurality of ventilation holes are arranged on the horizontal heat sink, and an "S"-shaped cavity loop is arranged inside the vertical heat sink and the horizontal heat sink, and the "S"-shaped cavity loop is communicated with the water cooling circulation pipeline.

5. A sodium ion battery energy storage system according to claim 1, characterized in that: A liquid cooling box is provided on the top of the battery cabinet, and the liquid cooling box includes a bottom plate, a top plate, a front cover plate, a rear cover plate, a right cover plate, and an air duct assembly. The front cover plate and the rear cover plate are respectively installed on the front and rear sides of the liquid cooling box. An air duct assembly is provided on the left side of the liquid cooling box, and the right cover plate is installed on the right side of the liquid cooling box. The bottom plate and the top plate are respectively arranged at the bottom and the top of the liquid cooling box, and a water cooling unit is installed inside the liquid cooling box.

6. A sodium ion battery energy storage system according to claim 5, characterized in that: The air duct assembly consists of an air duct grid, an air duct, and a fixing plate. The air duct grid and the air duct are mounted on the fixing plate by screws, and the fixing plate is mounted on the left side of the liquid cooling box.

7. A sodium ion battery energy storage system according to claim 1, characterized in that: The water-cooling circulation pipeline includes a transverse water-cooling pipe, a water inlet pipe, and a water return pipe. The water-cooling unit and the transverse water-cooling pipe, the water inlet pipe, the composite heat sink, and the water return pipe form a mesh circulation cooling loop.

8. A sodium ion battery energy storage system according to claim 1, characterized in that: A liquid replenishing pot is arranged on the right side of the water cooling unit, and the liquid replenishing pot is connected to the water cooling circulation pipeline.

9. A sodium ion battery energy storage system according to claim 1, characterized in that: The air cooling unit comprises a fan frame and a fan; the fan is installed on the fan frame, and the number of the fans is one or more.

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