Full-liquid-cooling integrated energy storage cabinet

Abstract

The utility model discloses a full liquid cooling integrated energy storage cabinet, comprising a cabinet body, the cabinet body is divided into a first chamber and a second chamber, the second chamber is divided into an upper chamber and a lower chamber, the first chamber is provided with a battery cluster module, and the upper chamber is provided with a PCS module; the device further comprises a heat management module, the heat management module comprises a liquid cooling system, the liquid cooling system comprises a liquid cooling host, and the liquid cooling host is installed in the lower cavity. The liquid-cooled host is arranged at the lower part, and a full liquid-cooled heat dissipation mode is adopted for heat dissipation, so that the heat dissipation efficiency can be improved, the installation and later maintenance of the liquid-cooled host are facilitated, meanwhile, the number of holes formed in the cabinet body can be reduced, and the cabinet body can have a relatively high protection level, so that the cabinet can be used in a severe environment.

Description

Technical Field

[0001] The utility model relates to the technical field of power equipment, and particularly relates to a fully liquid-cooled integrated energy storage cabinet. Background Art

[0002] In recent years, the proportion of renewable energy in the energy structure has been continuously increasing. To accelerate the construction of a new power system, energy storage has become an essential part of the new power system. An energy storage system generally consists of power-side energy storage, grid-side energy storage, and user-side energy storage. At present, industrial and commercial energy storage, as the main form of user-side energy storage in China, has been vigorously developed. As the main product of industrial and commercial energy storage, industrial and commercial energy storage outdoor cabinets mainly include fully air-cooled types and liquid-cooled types on the DC side. The liquid-cooled type on the DC side means that the DC side uses liquid cooling and the AC side uses air cooling for heat dissipation. Liquid cooling on the DC side can effectively improve the heat dissipation efficiency, and at the same time, the cabinet structure can achieve a relatively high IP protection level. This type has gradually replaced the fully air-cooled type products and has become the current mainstream configuration of industrial and commercial energy storage outdoor cabinet products. However, the liquid-cooled type products on the DC side also have problems such as low heat dissipation efficiency and protection level on the AC side, and are difficult to apply in areas with high temperature and high protection requirements.

[0003] Therefore, there is an urgent need to develop a fully liquid-cooled integrated energy storage cabinet. Compared with the current fully air-cooled and liquid-cooled outdoor energy storage cabinet products on the DC side in the market, it can achieve heat dissipation with a fully liquid-cooled structure, further improve the heat dissipation efficiency, and can achieve a relatively high protection level, enabling it to be used in harsh environments. At the same time, it can avoid the generation of condensation inside the cabinet during long-term operation of the energy storage cabinet, causing potential safety hazards. Summary of the Invention

[0004] In view of this, the purpose of the utility model is to provide a fully liquid-cooled integrated energy storage cabinet, which can achieve heat dissipation with a fully liquid-cooled structure compared with the prior art, further improve the heat dissipation efficiency, and at the same time can avoid the generation of condensation inside the cabinet during long-term operation of the energy storage cabinet, causing potential safety hazards.

[0005] The fully liquid-cooled integrated energy storage cabinet of the utility model includes:

[0006] A cabinet body, which is partitioned to form a first chamber and a second chamber. The second chamber is further partitioned into an upper chamber and a lower chamber. A battery cluster module is installed in the first chamber, and a PCS module is installed in the upper chamber;

[0007] It further includes a thermal management module. The thermal management module includes a liquid cooling system. The liquid cooling system includes a liquid cooling host, and the liquid cooling host is installed in the lower chamber. By installing the liquid cooling host in the lower chamber and adopting the method of fully liquid-cooled heat dissipation, the heat dissipation efficiency can be improved, and it is convenient for the installation and later maintenance of the liquid cooling host. At the same time, the number of openings in the cabinet body can be reduced, enabling the cabinet body to have a relatively high protection level, so that it can be used in harsh environments.

[0008] Further, the battery cluster module includes a high-voltage box module and a plurality of battery packs arranged in sequence from top to bottom. The plurality of battery packs are connected in series via cables, and an installation bracket for installing the high-voltage box module and the plurality of battery packs is provided in the first chamber.

[0009] Further, the liquid cooling system further includes a liquid cooling pipeline system. The liquid cooling pipeline system adopts a bottom-in and top-out manner, and the liquid cooling host is respectively connected to the battery cluster module and the PCS module through the liquid cooling pipeline system; adopting the bottom-in and top-out manner for the liquid cooling system pipeline can reduce the air residue in the liquid cooling system pipeline.

[0010] Further, a power distribution system is further included, and the power distribution system is arranged at the rear side of the high-voltage box module.

[0011] Further, a fire protection module is further included, including a smoke and temperature sensor, an audible and visual alarm, and an aerosol fire extinguishing device. The smoke and temperature sensor is used to detect the temperature and smoke in the environment where the battery cluster module is located. The output end of the smoke and temperature sensor is connected to the input end of the aerosol fire extinguishing device and the input end of the audible and visual alarm. The audible and visual alarm is arranged on the outer side of the cabinet body; setting the fire protection module can automatically extinguish the fire and give a warning when a fire occurs in the energy storage cabinet.

[0012] Further, the cabinet body further includes a front cabinet door and a rear cabinet door. A control module is provided on the front cabinet door, and a protective cover is provided corresponding to the control module; setting the protective cover can perform electrical isolation.

[0013] Further, the thermal management module further includes an industrial air conditioner. The industrial air conditioner is used to regulate the temperature and / or humidity of the chambers where the battery cluster module and the PCS module are located. The cabinet body is provided with a ventilation inlet, and the industrial air conditioner is connected to the ventilation inlet through a ventilation duct; setting the industrial air conditioner to regulate the temperature and / or humidity can prevent condensation from occurring inside the energy storage cabinet during long-term operation, and at the same time, being connected to the ventilation inlet through the ventilation duct makes the overall structure compact.

[0014] Further, a ventilation and protection module is further included. The ventilation and protection module is arranged at the ventilation opening of the rear cabinet door. The ventilation and protection module includes a mounting plate, a filtering structure, a louver structure, and a mesh protection structure. The mounting plate is correspondingly mounted on the ventilation opening, the filtering structure is mounted on the mounting plate, the louver structure is arranged outside the filtering structure, and the mesh protection structure is arranged outside the louver structure; setting the ventilation and protection module can improve the protection level of the energy storage cabinet and facilitate use in outdoor environments.

[0015] Furthermore, the cabinet body further includes a top cover and a right side plate. A plurality of detachable lifting lugs are provided on the top cover. An inlet and an outlet are provided at a lower position of the right side plate. Corresponding to the inlet and the outlet, a protection cover plate is provided inside the cabinet body. The protection cover plate is horizontally arranged at a lower position inside the cabinet body. The setting of the protection cover plate can prevent small animals from entering the cabinet body through the inlet or the outlet.

[0016] Furthermore, it further includes a battery pack limiting block. There are a plurality of battery pack limiting blocks, which are correspondingly arranged at the tail of the mounting bracket. The setting of the battery pack limiting block can perform installation positioning during the installation of the battery pack.

[0017] The beneficial effects of the present utility model: The all-liquid-cooled integrated energy storage cabinet of the present utility model adopts the method of placing the liquid-cooled host at the bottom to realize the all-liquid-cooled heat dissipation structure, further improving the heat dissipation efficiency. At the same time, the liquid-cooled system pipeline is arranged in a bottom-in and top-out manner, reducing the air residue in the liquid-cooled system pipeline. And because the all-liquid-cooled heat dissipation method is adopted, the openings of the cabinet body are reduced, thereby achieving a higher protection level, being able to be used in a harsh environment, and at the same time avoiding the generation of condensation inside the cabinet during the long-term operation of the energy storage cabinet, causing potential safety hazards. Description of the Drawings

[0018] The following further describes the present utility model in conjunction with the drawings and embodiments:

[0019] Figure 1 is an exploded view of the present utility model;

[0020] Figure 2 is a front view of the present utility model when the front cabinet door is opened;

[0021] Figure 3 is a front view of the present utility model when the front cabinet door is closed;

[0022] Figure 4 is a rear view of the present utility model when the rear cabinet door is opened;

[0023] Figure 5 is a schematic diagram of the ventilation and protection module;

[0024] Among them, the above-mentioned drawings include the following reference numerals:

[0025] 1. Battery pack; 2. High-voltage box module; 3. Liquid-cooled host; 4. Liquid-cooled pipeline system; 5. PCS module; 6. Cabinet; 601. First chamber; 602. Second chamber; 603. Top cover; 604. Right side plate; 7. Power distribution system; 8. Control module; 9. Protective cover; 10. Smoke and temperature sensor; 11. Aerosol fire extinguishing device; 12. Acousto-optic alarm; 13. Ventilation inlet; 14. Lifting lug; 15. Industrial air conditioner; 16. Inlet; 17. Battery pack limit block; 18. Protection cover plate; 19. Mesh protection structure; 20. Louver structure; 21. Filter cotton; 22. Mounting plate; 23. Mounting bracket. Detailed implementation manner

[0026] Figure 1 It is an exploded view of the present utility model. Figure 2 It is a front view of the present utility model when the front cabinet door is opened. Figure 3 It is a front view of the present utility model when the front cabinet door is closed. Figure 4 It is a rear view of the present utility model when the rear cabinet door is opened. Figure 5 It is a schematic diagram of the ventilation protection module, as Figures 1-5 shown: The fully liquid-cooled integrated energy storage cabinet of this embodiment includes:

[0027] Cabinet 6, the cabinet 6 is partitioned to form a first chamber 601 and a second chamber 602, the second chamber 602 is partitioned into an upper chamber and a lower chamber, the first chamber 601 is installed with a battery cluster module, and the upper chamber is installed with a PCS module 5; The first and second are only used to distinguish the two chambers, and the upper and lower are relative to the up and down in the figure. When in use, the energy storage cabinet can realize the charge and discharge functions. When discharging, the direct current of the battery cluster module is converted into alternating current through the PCS module 5 (energy storage converter module) and used to charge external devices. When charging, the external discharging device is inverted into direct current through the PCS module 5 to charge the battery cluster module.

[0028] It further includes a thermal management module. The thermal management module includes a liquid-cooled system. The liquid-cooled system includes a liquid-cooled host 3, and the liquid-cooled host 3 is installed in the lower chamber; The lower placement of the liquid-cooled host 3 facilitates the installation and later maintenance of the liquid-cooled host 3. When maintaining the liquid-cooled host 3 later, such as filling or discharging antifreeze, it can avoid the overflowing antifreeze from polluting the cabinet 6.

[0029] In this embodiment, the battery cluster module includes a high-voltage box module 2 and a plurality of battery packs 1 arranged in sequence from top to bottom. The plurality of battery packs 1 are connected in series by cables. An installation bracket 23 for installing the high-voltage box module 2 and the plurality of battery packs 1 is provided in the first chamber 601; The up and down refer to relative to Figure 1Up and down, multiple battery packs 1 are connected in series via cables to form a large-capacity battery pack 1 system. There is one high-voltage box module 2, which is used to achieve the power convergence and control of multiple battery packs 1. There are multiple mounting brackets 23. The high-voltage box module 2 is arranged on the upper part of the battery pack 1. The high-voltage box and multiple battery packs 1 are respectively mounted on the first chamber 601 through the mounting brackets 23.

[0030] In this embodiment, the liquid cooling system further includes a liquid cooling pipeline system 4. The liquid cooling pipeline system 4 adopts the way of entering from the bottom and exiting from the top. The liquid cooling pipeline system 4 includes an inlet pipe, a return pipe, an exhaust valve, etc. And the liquid cooling host 3 is respectively connected to the battery cluster module and the PCS module 5 through the liquid cooling pipeline system 4. The liquid cooling host 3 is installed in the lower chamber, that is, the liquid cooling host 3 is placed at the bottom. The inlets and outlets of the liquid cooling pipelines of the battery cluster module and the inlets and outlets of the liquid cooling pipelines of the PCS module 5 are located on the same side, which is convenient for the layout of the liquid cooling pipeline system 4. At the same time, it is convenient for the whole liquid cooling pipeline system 4 to adopt the way of entering from the bottom and exiting from the top, and the air residue in the liquid cooling pipeline system 4 can be reduced when injecting liquid. During use, the PCS module 5 and the battery cluster module are cooled by the liquid cooling system. Thus, the PCS module 5 and the battery cluster module share a set of liquid cooling system, which can improve the utilization rate of the liquid cooling system. At the same time, in the all-liquid-cooling way, the heat exchange medium can be a coolant, such as ethylene glycol-water solution, silicone oil and refrigerant, etc. Compared with the air cooling in the prior art, the heat dissipation efficiency can be effectively improved. However, for the DC-side liquid-cooled products, there are also problems of low heat dissipation efficiency and protection level on the AC side, which are difficult to be applied in areas with high temperature and high protection requirements. And condensation is likely to occur in the battery compartment during long-term operation. If not treated, it is easy to form a safety hazard. The all-liquid-cooled integrated energy storage cabinet of the present utility model adopts the way of placing the liquid cooling host at the bottom to realize the all-liquid-cooled heat dissipation structure. Since the all-liquid-cooled heat dissipation way is adopted, the opening of the cabinet body 6 can be reduced, so that the necessary opening area of the cabinet body 6 is small and can be concentratedly arranged, so that the cabinet body 6 can achieve a high protection level and can be applied to harsh environments. At the same time, it can avoid the condensation in the cabinet during the long-term operation of the energy storage cabinet, causing safety hazards.

[0031] In this embodiment, a power distribution system 7 is further included. The power distribution system 7 is arranged at the rear side of the high-voltage box module 2. The front and rear are perpendicular to the direction in the figure. The power distribution system 7 is used for the power distribution management of the energy storage cabinet and includes switches, etc.

[0032] In this embodiment, a fire protection module is further included, which includes a smoke and temperature sensor 10, an audible and visual alarm 12, and an aerosol fire extinguishing device 11. The smoke and temperature sensor 10 is used to detect the temperature and smoke in the environment where the battery cluster module is located. The output end of the smoke and temperature sensor 10 is connected to the input end of the aerosol fire extinguishing device 11 and the input end of the audible and visual alarm 12. The audible and visual alarm 12 is arranged on the outer side of the cabinet 6. The smoke and temperature sensor 10 is used to detect the temperature and smoke in the environment where the battery cluster module is located, so as to control the audible and visual alarm 12 to give an alarm. The aerosol fire extinguishing device 11 is an automatic fire extinguishing device. When the smoke and temperature sensor 10 detects that the smoke and temperature reach the set value, it will send a start electrical signal to the aerosol fire extinguishing device 11, that is, start the aerosol fire extinguishing device 11, which is used to extinguish the fire in the energy storage cabinet when a fire occurs in the energy storage cabinet.

[0033] In this embodiment, the cabinet 6 further includes a front cabinet door and a rear cabinet door. A control module 8 is arranged on the front cabinet door, and a protective cover 9 is provided corresponding to the control module 8. In this structure, the front and rear are only used to distinguish the two cabinet doors. The control module 8 is arranged on the front cabinet door and is used to control the operation of each module in the energy storage cabinet, such as controlling the charging and discharging of the energy storage system, etc. The protective cover 9 is provided corresponding to the control module 8. The protective cover 9 is of a detachable design, which can perform electrical isolation to prevent accidental electric shock by personnel. At the same time, ventilation holes and equipment operation hole structures can be arranged on the protective cover 9 to facilitate heat dissipation of the control module 8 and personnel to perform operations.

[0034] In this embodiment, the thermal management module further includes an industrial air conditioner 15. The industrial air conditioner 15 is used to regulate the temperature and / or humidity of the chambers where the battery cluster module and the PCS module 5 are located. The cabinet 6 is provided with a ventilation inlet 13, and the industrial air conditioner 15 is connected to the ventilation inlet 13 through a ventilation duct. The thermal management module includes an industrial air conditioner 15 and a liquid cooling system. The temperature of the chamber where the battery cluster module is located can be regulated through the industrial air conditioner 15, and at the same time, the battery cluster module and the PCS module 5 are cooled through the liquid cooling system. In different usage environments, the battery pack 1 (lithium-ion battery) can be maintained to operate at the optimal temperature of 25°C, and at the same time, the chambers where the battery cluster module and the PCS module 5 are located can be kept at normal temperature and dry environment. The ventilation inlet 13 is arranged on the cabinet 6, and the industrial air conditioner 15 is arranged on the rear cabinet door. The industrial air conditioner 15 is connected to the ventilation inlet 13 through a ventilation duct, so as to facilitate the air flow to the chambers where the battery cluster module and the PCS module 5 are located, thereby realizing the regulation of the temperature and / or humidity of the chambers where the battery cluster module and the PCS module 5 are located. When performing humidity regulation, the humidity can be regulated by increasing the air flow in the chambers where the battery cluster module and the PCS module 5 are located or by condensing and dehumidifying through the industrial air conditioner 15, etc.

[0035] In this embodiment, a ventilation protection module is further included. The ventilation protection module is arranged at the ventilation opening of the rear cabinet door. The ventilation protection module includes a mounting plate 22, a filtering structure 21, a louver structure 20, and a mesh protection structure 19. The mounting plate 22 is correspondingly mounted at the ventilation opening. The filtering structure is mounted on the mounting plate 22. The louver structure 20 is arranged outside the filtering structure 21, and the mesh protection structure 19 is arranged outside the louver structure 20. The mesh protection structure 19 can prevent foreign objects such as fingers from entering and has a drainage function at the same time. The louver structure 20 and the mesh protection structure 19 are welded into one body. The louver structure 20 can block rainwater and discharge the rainwater through the mesh protection structure 19. The filtering structure 21 is a filter cotton. Setting the filter cotton can filter fine particles such as dust and sand grains. The mounting plate 22 is fixed on the cabinet body 6 by bolts and can be disassembled, which is convenient for replacing and cleaning the filter cotton. At the same time, the protection level of the entire energy storage cabinet can reach above IP54, improving the adaptability to the outdoor environment and facilitating use in the outdoor environment.

[0036] In this embodiment, the cabinet body 6 further includes a top cover 603 and a right side plate 604. A plurality of detachable lifting lugs 14 are arranged on the top cover 603. An inlet 16 and an outlet are provided at a lower position of the right side plate 604. Corresponding to the inlet 16 and the outlet, a protection cover plate 18 is arranged inside the cabinet body 6. The protection cover plate 18 is horizontally arranged at a lower position inside the cabinet body 6. Arranging the detachable lifting lugs 14 on the top cover 603 of the cabinet body 6 facilitates the hoisting and lifting of the energy storage cabinet. At the same time, the inlet 16 and the outlet are arranged at a lower position of the right side plate 604 (left and right are only used to distinguish the two side plates), which facilitates the communication connection and power transmission between external devices and the energy storage cabinet. At the same time, the protection cover plate 18 is provided to prevent personnel from accidentally touching the live body and small animals from entering the energy storage cabinet. At the same time, the structure of the cabinet body 6 is a double-layer structure, and a certain thickness of non-combustible heat-insulating material can be filled inside to keep the inside of the box warm. At the same time, a chassis structure is arranged at the bottom of the cabinet body 6, and the chassis structure is provided with forklift holes (not shown in the figure), which is convenient for forklift transfer operations. At the same time, floor drain holes can be set to facilitate the discharge of liquid inside the cabinet body 6.

[0037] In this embodiment, a plurality of battery pack limit blocks 17 are further included, and the battery pack limit blocks 17 are correspondingly arranged at the tail of the mounting bracket 23. The cross-section of the battery pack limit block 17 is a Z-shaped bending structure. During use, the battery pack 1 enters the cabinet body 6 from the front of the mounting bracket 23 and contacts the battery pack limit block 17. By setting the battery pack limit block 17, the battery pack 1 can be installed, positioned, and limited. The mounting bracket 23 is an application of an existing structure, and the mounting bracket can be formed by fixing a plurality of L-shaped plate structures to the cabinet body 6 with bolts.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A fully liquid-cooled integrated energy storage cabinet, characterized in that: include: A cabinet, wherein the cabinet is divided into a first chamber and a second chamber, wherein the second chamber is divided into an upper chamber and a lower chamber, wherein a battery cluster module is installed in the first chamber, and a PCS module is installed in the upper chamber; It also includes a thermal management module, which includes a liquid cooling system. The liquid cooling system includes a liquid cooling host, and the liquid cooling host is installed in the lower chamber.

2. The fully liquid-cooled integrated energy storage cabinet according to claim 1, characterized in that: The battery cluster module includes a high-voltage box module and a plurality of battery packs arranged in sequence from top to bottom. The plurality of battery packs are connected in series via cables. A mounting bracket for mounting the high-voltage box module and the plurality of battery packs is provided in the first chamber.

3. The fully liquid-cooled integrated energy storage cabinet according to claim 1, characterized in that: The liquid cooling system also includes a liquid cooling pipeline system, which adopts a bottom-in-top-out method, and the liquid cooling host is connected to the battery cluster module and the PCS module respectively through the liquid cooling pipeline system.

4. The fully liquid-cooled integrated energy storage cabinet according to claim 2, characterized in that: It also includes a power distribution system, which is arranged on the rear side of the high-voltage box module.

5. The fully liquid-cooled integrated energy storage cabinet according to claim 1, characterized in that: It also includes a fire protection module, including a smoke temperature sensor, an audible and visual alarm, and an aerosol fire extinguishing device. The smoke temperature sensor is used to detect the temperature and smoke of the environment in which the battery cluster module is located. The output end of the smoke temperature sensor is connected to the input end of the aerosol fire extinguishing device and the input end of the audible and visual alarm. The audible and visual alarm is arranged on the outside of the cabinet.

6. The fully liquid-cooled integrated energy storage cabinet according to claim 1, characterized in that: The cabinet body further comprises a front cabinet door and a rear cabinet door. The front cabinet door is provided with a control module, and a protective cover is provided corresponding to the control module.

7. The fully liquid-cooled integrated energy storage cabinet according to claim 1, characterized in that: The thermal management module also includes an industrial air conditioner, which is used to regulate the temperature and / or humidity of the chamber where the battery cluster module and the PCS module are located. The cabinet is provided with a ventilation inlet, and the industrial air conditioner is connected to the ventilation inlet through a ventilation duct.

8. The fully liquid-cooled integrated energy storage cabinet according to claim 6, characterized in that: It also includes a ventilation protection module, which is arranged at the ventilation opening of the rear cabinet door. The ventilation protection module includes a mounting plate, a filtering structure, a louver structure and a mesh protection structure. The mounting plate is correspondingly installed at the ventilation opening, the filtering structure is installed on the mounting plate, the louver structure is arranged on the outside of the filtering structure, and the mesh protection structure is arranged on the outside of the louver structure.

9. The fully liquid-cooled integrated energy storage cabinet according to claim 1, characterized in that: The cabinet also includes a top cover and a right side panel, the top cover is provided with a plurality of detachable lifting ears, a line inlet and a line outlet are provided at the lower position of the right side panel, a protective cover is provided in the cabinet corresponding to the line inlet and the line outlet, and the protective cover is transversely arranged at the lower position in the cabinet.

10. The fully liquid-cooled integrated energy storage cabinet according to claim 2, characterized in that: It also includes a battery pack limiting block, and the battery pack limiting blocks are multiple and are correspondingly arranged at the tail of the mounting bracket.

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