Split type full-liquid cooling energy storage system

Abstract

The utility model provides a kind of split type full liquid cooling energy storage system, comprising: cabinet, the cabinet is provided with first chamber and second chamber;Wherein, in the second chamber, from top to bottom along the height direction of the cabinet, battery cabin and electrical cabin are sequentially arranged, heat insulation layer is arranged between the battery cabin and electrical cabin;Heat exchange cabin, the heat exchange cabin is set in the first chamber, water inlet channel and water outlet channel that are connected are provided in the heat exchange cabin, and the water inlet channel and water outlet channel are mounted along the inner wall of the second chamber.The split type full liquid cooling energy storage system provided by the utility model uses heat insulation layer to separate heat exchange cabin, battery cabin and electrical cabin, so that good heat insulation treatment is made between cabin and cabin, reduces the thermal interference and heat exchange between adjacent cabins, and when the energy storage system operates, the battery cabin and electrical cabin are cooled by the heat exchange cabin through the water inlet channel and water outlet channel, so as to reduce the overheating phenomenon of cabin body.

Description

Technical Field

[0001] This utility model relates to the field of energy storage systems, specifically to a split-type fully liquid-cooled energy storage system. Background Technology

[0002] To improve energy efficiency, it is often necessary to collect excess energy that is not currently in use through energy storage systems and store it in some way, so that it can be extracted and used when needed, thereby improving the efficiency of energy use.

[0003] Energy storage systems often use lithium batteries as storage elements. To increase their storage capacity, multiple sets of lithium batteries are arranged evenly in the energy storage cabinet. When the energy storage system outputs or inputs energy, a large amount of heat is generated in multiple locations inside the energy storage cabinet. Due to the complex and narrow air ducts inside the energy storage cabinet, and the accumulation of multiple electrical components, heat will be transferred to various components, resulting in the energy storage cabinet overheating. This can easily lead to the energy storage system crashing or misjudging, causing significant economic losses. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies and to solve the heat dissipation issue.

[0005] To achieve the above objectives, this utility model can be implemented through the following technical solution: a split-type fully liquid-cooled energy storage system, comprising:

[0006] The cabinet is provided with a first chamber and a second chamber;

[0007] The second chamber contains a battery compartment and an electrical compartment arranged sequentially from top to bottom along the height of the cabinet, with a heat insulation layer between the battery compartment and the electrical compartment.

[0008] A heat exchange chamber is disposed within the first chamber. The heat exchange chamber is provided with a connected inlet water channel and an outlet water channel. The inlet water channel and the outlet water channel are installed along the inner wall of the second chamber and are connected to the battery compartment and the electrical compartment.

[0009] In this embodiment of the utility model, an air inlet is provided on the first chamber, and an exhaust fan is provided on the air inlet.

[0010] In this embodiment of the utility model, the battery compartment has multiple energy storage cabinets, which are arranged sequentially from top to bottom along the height direction of the cabinet body, and each energy storage cabinet is in contact with the water inlet channel and the water outlet channel.

[0011] In this embodiment of the utility model, a liquid cooling unit is provided in the heat exchange chamber, and the liquid cooling unit includes a low-temperature radiator, a first plate heat exchanger, and a second plate heat exchanger.

[0012] The inlet and outlet channels are combined to form a liquid cooling pipe, which is connected in sequence to the second heat exchanger, the first heat exchanger and the low-temperature radiator.

[0013] The liquid cooling unit is connected to the battery compartment and the electrical compartment via the liquid cooling pipes.

[0014] In this embodiment of the utility model, the liquid cooling unit is provided with a first pump body and a second pump body. The first pump body is located at the liquid cooling pipe between the low-temperature radiator and the first heat exchanger, while the second pump body is located at the cooling pipe between the battery compartment and the second heat exchanger.

[0015] In this embodiment of the utility model, a coolant storage tank is provided between the first heat exchanger and the second heat exchanger.

[0016] In this embodiment of the invention, a resistor is provided between the second heat exchanger and the battery compartment.

[0017] In this embodiment of the utility model, the liquid cooling unit is a single module and is detachably assembled in the heat exchange chamber.

[0018] In this embodiment of the utility model, a compressor is provided between the first heat exchanger and the second heat exchanger.

[0019] In this embodiment of the invention, the battery compartment is disposed between the electrical compartment and the heat exchange compartment.

[0020] Compared with the prior art, the advantages of this application are: the use of a heat insulation layer to separate the heat exchange chamber, battery chamber and electrical chamber, thereby ensuring heat insulation between the chambers and reducing thermal interference and heat exchange between adjacent chambers. At the same time, when the energy storage system is running, the heat exchange chamber dissipates heat to the battery chamber and electrical chamber through the water inlet and outlet channels, thereby reducing the occurrence of overheating in the chamber. Attached Figure Description

[0021] Figure 1 This is a front plan view of the cabinet provided in this embodiment of the utility model;

[0022] Figure 2 This is a plan view of the internal structure of the cabinet provided in this embodiment of the utility model;

[0023] Figure 3 This is a top view of the cabinet provided in this embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the split-type fully liquid-cooled energy storage system provided in this embodiment of the utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Cabinet; 11. First Chamber; 12. Second Chamber; 2. Heat Exchange Chamber; 20. First Pump Body; 21. Air Inlet; 22. Exhaust Fan; 23. Low Temperature Radiator; 24. Compressor; 25. Second Pump Body; 26. Resistor; 27. Second Plate Heat Exchanger; 28. Coolant Storage Tank; 29. ​​First Plate Heat Exchanger; 31. Water Inlet Channel; 32. Water Outlet Channel; 4. Battery Compartment; 5. Insulation Layer; 6. Electrical Compartment. Detailed Implementation

[0027] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings.

[0028] like Figure 1-4 As shown, a split-type fully liquid-cooled energy storage system includes:

[0029] Cabinet 1, which is provided with a first chamber 11 and a second chamber 12;

[0030] Among them, the second chamber 12 is provided with a battery compartment 4 and an electrical compartment 6 arranged from top to bottom along the height direction of the cabinet 1, and a heat insulation layer 5 is provided between the battery compartment 4 and the electrical compartment 6;

[0031] Heat exchange chamber 2 is located inside the first chamber 11. The heat exchange chamber 2 is provided with a connected water inlet channel 31 and a water outlet channel 32. The water inlet channel 31 and the water outlet channel 32 are installed along the inner wall of the second chamber 12 and are connected to the battery compartment 4 and the electrical compartment 6.

[0032] Specifically, the cabinet 1 is rectangular in shape to reduce the floor space. The cabinet 1 is divided into two parts: a first chamber 11 and a second chamber 12. The first chamber 11 is equipped with a heat exchange chamber 2 (liquid cooling unit) for heat dissipation of the system, while the second chamber 12 houses the battery compartment 4 and the electrical compartment 6 for storing and releasing electrical energy. When the battery compartment 4 and the electrical compartment 6 are running, the heat exchange chamber 2 introduces coolant from the inlet channel 31, allowing the coolant to exchange heat with the battery compartment 4 and the electrical compartment 6. Since the liquid cooling channel is installed close to the inner wall of the cabinet 1, the flow area of ​​the liquid cooling channel is increased, and the liquid cooling channel fully contacts the battery compartment 4 and the electrical compartment 6 to improve the heat exchange effect. After the heat exchange is completed, the coolant is discharged from the outlet channel 32 and dissipated through the liquid cooling unit.

[0033] Furthermore, the insulation layer 5 divides the cabin into three parts, thereby reducing heat exchange and thermal interference between the cabins during operation. At the same time, the liquid-cooled unit has front-end airflow and top-end airflow for heat dissipation, and the distributed energy storage system can be arranged side by side. There will be no thermal interference between adjacent distributed energy storage cabinets. The compartmentalized management, the isolation between the battery compartment 4 and the electrical compartment 6 can avoid the formation of condensate during heat exchange and solve the condensation problem. There are only liquid-cooled pipes, power lines and communication lines between the cabins. The liquid-cooled pipes, communication lines and power lines are well protected, which helps to improve the overall system efficiency.

[0034] Furthermore, the all-liquid cooling method connects the electrical compartment 6 and the battery compartment 4 through liquid cooling pipes. When the ambient temperature is too low (below zero), the heat generated by the electrical compartment 6 during operation can be transferred to the battery compartment 4 through the liquid cooling pipes of the electrical compartment 6 to heat the battery. The liquid cooling unit can reduce the power loss caused by PTC heating. When the ambient temperature is low, the low-temperature radiator 23 of the liquid cooling unit (using the low-temperature environment, there is a temperature difference between the system and the environment) dissipates heat from the circulating liquid coolant, which can reduce the loss of the liquid cooling unit.

[0035] Furthermore, there is no need to add a dehumidifier to solve the condensation problem in battery compartment 4. The low-temperature radiator 23 operates to dissipate heat from the system without starting the liquid cooling unit, thus reducing energy loss. In the low-temperature environment, it absorbs the waste heat of the PCS to heat the battery cluster system, reducing the PTC heating power of the liquid cooling unit and improving system efficiency.

[0036] As a further embodiment of this utility model, an air inlet 21 is provided on the first chamber 11, and an exhaust fan 22 is provided on the air inlet 21. The combination of water cooling and air cooling improves the heat dissipation effect on the battery compartment 4 and the electrical compartment 6. The air inlet 21 can be circular, and at least two sets of it are provided on the top of the cabinet 1 and connected to the heat exchange chamber 2. The exhaust fan 22 at the air inlet 21 improves the air flow efficiency inside the cabinet 1.

[0037] As a further embodiment of this utility model, the battery compartment 4 has multiple energy storage cabinets, which are arranged sequentially from top to bottom along the height direction of the cabinet body 1. Each energy storage cabinet abuts against the water inlet channel 31 and the water outlet channel 32. Each energy storage cabinet is composed of multiple lithium battery packs. Figure 2 The cabinets are arranged from top to bottom to improve the integration of the cabinet 1. The length of the cabinet 1 and the number of energy storage cabinets in the battery compartment 4 are changed in the height direction. Compared with the horizontal addition of the battery compartment 4, this method reduces the area occupied by the cabinet 1 and improves the utilization rate of the floor space.

[0038] As a further embodiment of this utility model, a liquid cooling unit is installed in the heat exchange chamber 2. The liquid cooling unit includes a low-temperature radiator 23, a first plate heat exchanger 29, and a second plate heat exchanger 27. A liquid cooling pipeline is formed by combining an inlet water channel 31 and an outlet water channel 32. The liquid cooling pipeline is sequentially connected to the second plate heat exchanger 27, the first plate heat exchanger 29, and the low-temperature radiator 23. The liquid cooling unit is connected to the battery compartment 4 and the electrical compartment 6 through the liquid cooling pipeline. The low-temperature radiator 23, the first plate heat exchanger 29, and the second plate heat exchanger 27 all have a heat dissipation effect and are all in contact with the heat of the liquid cooling pipeline. The coolant undergoes heat exchange to improve heat dissipation. The low-temperature radiator 23 is composed of densely arranged aluminum or copper fins, increasing the contact area with air. This, combined with the exhaust fan 22 at the air inlet 21, creates convection, rapidly dissipating heat into the surrounding air. The first heat exchanger 29 and the second heat exchanger 27 achieve energy transfer between the hot and cold fluids through highly efficient isolation heat exchange. Physical isolation of the hot and cold media, coupled with ultra-high-density heat exchange, improves the heat exchange efficiency of the heat exchange chamber 2, reducing the risk of overheating in the energy storage system. Figure 4 As shown in the figure, the low-temperature heat sink 23, the first heat exchanger 29 and the second heat exchanger 27 are arranged from left to right.

[0039] As a further embodiment of this utility model, the liquid cooling unit is provided with a first pump body 20 and a second pump body 25. The first pump body 20 is located in the liquid cooling pipe between the low-temperature radiator 23 and the first heat exchanger 29, while the second pump body 25 is located in the cooling pipe between the battery compartment 4 and the second heat exchanger 27. The first pump body 20 and the second pump body 25 improve the circulation drive and flow and pressure regulation of the fluid inside the cooling pipe, so that the battery will generate a lot of heat during operation. The heat will exchange with the coolant in the cooling pipe. The first pump body 20 and the second pump body 25 ensure efficient heat transfer to reduce the phenomenon of overheating in the battery compartment 4.

[0040] As a further embodiment of this utility model, a coolant storage tank 28 is provided between the first heat exchanger 29 and the second heat exchanger 27. The coolant storage tank 28 is used to store liquid to ensure that the entire liquid cooling system can operate stably, reliably and safely.

[0041] As a further embodiment of this utility model, a resistor 26 is provided between the second plate 27 and the battery compartment 4, and the resistor 26 is installed on... Figure 4 Below the circuit, resistor 26 serves as a high-efficiency and safe heating element to avoid capacity decay or reduced charging and discharging efficiency caused by low temperature. Similarly, the heated coolant flows through the battery liquid cooling plate to achieve uniform heat transfer.

[0042] As a further embodiment of this utility model, the liquid cooling unit is a single module and is detachably assembled in the heat exchange chamber 2, that is, the top of the cabinet 1, so as to facilitate the replacement of the internal components of the liquid cooling unit and improve the efficiency of maintenance or repair.

[0043] As a further embodiment of this utility model, a compressor 24 is disposed between the first heat exchanger 29 and the second heat exchanger 27, and the compressor 24 is located at... Figure 4 Above the circuit, compressor 24 serves as the core power source for the refrigeration cycle, increasing the pressure of the refrigerant and the power required for the refrigeration cycle, thereby optimizing refrigeration efficiency, energy consumption level, and operational stability.

[0044] As a further embodiment of this utility model, the battery compartment 4 is disposed between the electrical compartment 6 and the heat exchange compartment 2. The heat exchange compartment 2 is disposed at the top of the cabinet 1, and the electrical compartment 6 is disposed at the bottom of the cabinet 1. The battery compartment 4 is located between the two compartments. The heat exchange compartment 2 improves the heat dissipation effect of the battery compartment 4 and avoids overheating in the energy storage cabinet. The electrical compartment 6 is equipped with an AC power distribution compartment, a high-voltage box, a PCS and other electrical components to regulate the input and output power of the battery compartment 4.

[0045] The above-described technical solution of this utility model addresses the problem that existing technical solutions are too simplistic and provides a solution that is significantly different from existing technologies. The parts not covered in this application's technical solution are the same as or can be implemented using existing technologies, and will not be described in detail here.

[0046] The technical solutions in the above embodiments have clearly and completely described the content of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A split-type fully liquid-cooled energy storage system, characterized in that, include: The cabinet is provided with a first chamber and a second chamber; The second chamber contains a battery compartment and an electrical compartment arranged sequentially from top to bottom along the height of the cabinet, with a heat insulation layer between the battery compartment and the electrical compartment. A heat exchange chamber is disposed within the first chamber. The heat exchange chamber is provided with a connected inlet water channel and an outlet water channel. The inlet water channel and the outlet water channel are installed along the inner wall of the second chamber and are connected to the battery compartment and the electrical compartment.

2. The split-type fully liquid-cooled energy storage system according to claim 1, characterized in that, The first chamber has an air inlet, and an exhaust fan is installed on the air inlet.

3. The split-type fully liquid-cooled energy storage system according to claim 1, characterized in that, The battery compartment has multiple energy storage cabinets, which are arranged sequentially from top to bottom along the height of the cabinet body. Each energy storage cabinet is in contact with the water inlet channel and the water outlet channel.

4. A split-type fully liquid-cooled energy storage system according to claim 1, characterized in that, The heat exchange chamber is equipped with a liquid cooling unit, which includes a low-temperature radiator, a first plate heat exchanger, and a second plate heat exchanger. The inlet and outlet channels are combined to form a liquid cooling pipe, which is connected in sequence to the second heat exchanger, the first heat exchanger and the low-temperature radiator. The liquid cooling unit is connected to the battery compartment and the electrical compartment via the liquid cooling pipes.

5. A split-type fully liquid-cooled energy storage system according to claim 4, characterized in that, The liquid cooling unit is equipped with a first pump body and a second pump body. The first pump body is located at the liquid cooling pipe between the low-temperature radiator and the first heat exchanger, while the second pump body is located at the cooling pipe between the battery compartment and the second heat exchanger.

6. A split-type fully liquid-cooled energy storage system according to claim 4, characterized in that, A coolant storage tank is provided between the first heat exchanger and the second heat exchanger.

7. A split-type fully liquid-cooled energy storage system according to claim 4, characterized in that, A resistor is provided between the second plate and the battery compartment.

8. A split-type fully liquid-cooled energy storage system according to claim 4, characterized in that, A compressor is installed between the first heat exchanger and the second heat exchanger.

9. A split-type fully liquid-cooled energy storage system according to claim 4, characterized in that, The liquid cooling unit is a single module and is detachably assembled inside the heat exchange chamber.

10. A split-type fully liquid-cooled energy storage system according to claim 1, characterized in that, The battery compartment is located between the electrical compartment and the heat exchange compartment.

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