Hydrocarbon cooling liquid immersed type energy storage liquid cooling box body

Abstract

The utility model relates to the technical field of liquid cooling boxes, in particular to a hydrocarbon cooling liquid immersed energy storage liquid cooling box body, which comprises a cavity, an upper cover arranged at the top of the cavity, a liquid cooling plate arranged at the bottom of the cavity, a liquid injection port arranged in the cavity, a liquid discharge port arranged at an interval with the liquid injection port, and a liquid level sensor arranged in the cavity, a battery cell is placed in the cavity, the liquid injection port is located above the liquid discharge port, and the liquid level sensor is located beside the liquid injection port. The device is compact in structure and reasonable in design, adopts an immersion cooling mode to carry out multidirectional centralized heat dissipation, is high in heat dissipation efficiency, effectively avoids thermal runaway reaction of the battery cells, greatly reduces energy consumption, and improves use safety performance.

Description

Technical Field

[0001] This utility model relates to the field of liquid cooling box technology, and in particular to a hydrocarbon coolant immersion type energy storage liquid cooling box. Background Technology

[0002] Liquid cooling boxes are widely used in technologies such as power battery systems for new energy vehicles, data center servers, and laser projectors. A liquid cooling box is a device used to cool batteries or electronic devices. By contacting the battery or electronic device, it effectively absorbs the heat generated by the device and transfers it to the external environment, thus achieving efficient heat dissipation. Existing liquid cooling boxes mainly adopt a bottom-cooled structure, dissipating heat in one direction from the bottom of the box. This cooling effect is very limited, and much heat still cannot be dissipated in time. When the heat accumulates to a certain level, battery failure problems can easily occur, such as thermal runaway reactions due to overcharging, over-discharging, or even short circuits, posing significant safety hazards. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a hydrocarbon coolant immersion type energy storage liquid-cooled tank with a compact and reasonable structure. It adopts an immersion cooling method for multi-directional centralized heat dissipation, resulting in high heat dissipation efficiency, effectively preventing thermal runaway reactions in the battery cells, significantly reducing energy consumption, and improving safety performance.

[0004] To achieve the above objectives, this utility model provides a hydrocarbon coolant immersion type liquid-cooled energy storage tank, comprising a cavity, a top cover disposed on the top of the cavity, a liquid cooling plate disposed on the bottom of the cavity, a liquid inlet disposed on the cavity, a liquid outlet disposed at a distance from the liquid inlet, and a liquid level sensor disposed on the cavity. A battery cell is placed inside the cavity, the liquid inlet is located above the liquid outlet, and the liquid level sensor is located beside the liquid inlet.

[0005] Preferably, the cavity is provided with an isolation chamber and a connecting cover connected to the isolation chamber. The isolation chamber is recessed from the front side of the cavity and is used to house an external battery management system. The connecting cover is provided with a first connecting hole, and multiple first connecting holes are provided. The multiple first connecting holes are arranged at intervals along the circumference of the connecting cover. The isolation chamber is provided with mounting screws, and multiple mounting screws are arranged at intervals along the circumference of the isolation chamber. The multiple mounting screws are respectively connected to the multiple first connecting holes.

[0006] Preferably, the upper cover is provided with a second connecting hole, and there are multiple second connecting holes arranged at intervals along the circumference of the upper cover. The cavity is provided with mounting holes, and multiple mounting holes are arranged at intervals along the circumference of the cavity. The multiple second connecting holes are respectively connected to the multiple mounting holes.

[0007] Preferably, the cavity is equipped with a high-pressure explosion-proof valve.

[0008] Preferably, the liquid cooling plate is provided with a first connector and a second connector, both of which are perpendicular to the liquid cooling plate.

[0009] Preferably, the cavity is provided with a waterproof connector.

[0010] The beneficial effects of this utility model are: compact structure and reasonable design, multi-directional centralized heat dissipation by immersion cooling, high heat dissipation efficiency, effective prevention of thermal runaway reaction of battery cells, significant reduction of energy consumption, and improvement of safety performance. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is an exploded structural diagram of the present invention.

[0013] The reference numerals in the figures include:

[0014] 1—Cavity 11—Isolation Chamber 12—Connecting Cover

[0015] 13 – First connecting hole; 14 – Mounting screw; 15 – Mounting hole

[0016] 2—Top cover 21—Second connecting hole

[0017] 3—Liquid cooling plate; 31—First connector; 32—Second connector

[0018] 4 – Injection port; 5 – Drain port; 6 – Liquid level sensor

[0019] 7 - Battery cell; 8 - High-voltage explosion-proof valve; 9 - Waterproof connector. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings.

[0021] like Figures 1 to 2 As shown, this utility model discloses a hydrocarbon coolant immersion type liquid-cooled energy storage tank, including a cavity 1, an upper cover 2 disposed on the top of the cavity 1, a liquid cooling plate 3 disposed on the bottom of the cavity 1, a liquid injection port 4 disposed on the cavity 1, a liquid discharge port 5 disposed at a distance from the liquid injection port 4, and a liquid level sensor 6 disposed on the cavity 1. A battery cell 7 is placed inside the cavity 1, the liquid injection port 4 is located above the liquid discharge port 5, and the liquid level sensor 6 is located beside the liquid injection port 4.

[0022] During operation, hydrocarbon coolant is injected into cavity 1 through injection port 4. Hydrocarbon coolant is an organic compound cooling medium primarily composed of carbon (C) and hydrogen (H) elements, widely used in immersion liquid cooling systems. Hydrocarbon coolant has a low freezing point and high latent heat of vaporization, resulting in faster cooling per unit time. It also possesses good inertness, compatibility with metals and rubber, and is non-toxic. Furthermore, it has a low coefficient of expansion for safe transportation, high dielectric strength for good insulation, strong inertness for low volatility, and excellent thermal conductivity, allowing the hydrocarbon coolant to immerse the battery cell 7 placed in cavity 1. Battery cell 7 is specifically a square aluminum-cased battery cell 7. The actual level of hydrocarbon coolant is detected by a level sensor 6, specifically a photoelectric level sensor 6. When the actual level... When the temperature rises too high and reaches the warning detection area, an alarm will be issued in time, and the injection of hydrocarbon coolant will be stopped. Excess hydrocarbon coolant will be discharged through the drain port 5 into an external container for collection. The drain port 5 will then be manually closed and locked. The top cover 2 is installed and sealed on the top of the cavity 1. The liquid cooling plate 3 is installed at the bottom of the cavity 1. The liquid cooling plate 3 is made of 6-series aluminum material and has excellent heat dissipation performance. A 50% ethylene glycol aqueous solution is injected into the liquid cooling plate 3. The 50% ethylene glycol aqueous solution is a solution made of ethylene glycol and water in a volume ratio of 1:1. Its physical and chemical properties have wide applications in industrial, refrigeration, and cooling fields. Using the 50% ethylene glycol aqueous solution as a cooling medium, heat exchange occurs through the close contact between the liquid cooling plate 3 and the bottom of the battery cell 7, thereby quickly conducting and removing the heat generated by the battery cell 7 during operation. By using an immersion liquid-cooled box in conjunction with a liquid-cooled plate 3, comprehensive heat dissipation of the battery cell 7 is achieved. This application can be widely used for 280Ah, 314Ah, 375Ah, 420Ah and larger capacity battery cells 7, and can also be used in containerized energy storage power stations and containerized energy storage mobile charging vehicles. It has good versatility and practicality. The original 0.5C and 1C charging rate battery cells 7 have been replaced with the latest super-fast charging rate 2C, 3C and 4C super-fast charging cells 7, and the traditional fluorinated liquid has been replaced with a hydrocarbon coolant. This invention improves the performance and heat dissipation of the immersion energy storage liquid-cooled chamber, increases cooling efficiency, significantly reduces energy consumption, and effectively solves the fire protection problem of the battery cell 7. It avoids thermal runaway in the event of overcharging, over-discharging, or short circuit of the battery cell 7, thus extending its service life and reducing maintenance costs. Multiple battery cells 7 are neatly arranged within the chamber 1, significantly increasing the energy density of the energy storage system and solving the land-limited issue. Furthermore, this invention can be widely applied to chambers 1 of different types and specifications, exhibiting good versatility and practicality. The invention has a compact and rationally designed structure, employing immersion cooling for multi-directional centralized heat dissipation, resulting in high heat dissipation efficiency, effectively preventing thermal runaway of the battery cell 7, significantly reducing energy consumption, and improving safety performance.

[0023] In this embodiment, the cavity 1 is provided with an isolation chamber 11 and a connecting cover 12 connected to the isolation chamber 11. The isolation chamber 11 is recessed from the front side of the cavity 1 and is used to house an external battery management system. The connecting cover 12 is provided with a first connecting hole 13. Multiple first connecting holes 13 are provided and are arranged at intervals along the circumference of the connecting cover 12. The isolation chamber 11 is provided with mounting screws 14. Multiple mounting screws 14 are arranged at intervals along the circumference of the isolation chamber 11 and are respectively connected to multiple first connecting holes 13. Specifically, the isolation chamber 11 is recessed from the front side of the cavity 1. The isolation chamber 11 is used to house the external battery management system. The battery management system is electrically connected to the battery cell 7. The battery management system, also known as the BMS battery system, is mainly used for intelligent management and maintenance of each battery cell 7, monitoring the status of the battery cell 7, preventing overcharging and over-discharging of the battery cell 7, and extending the service life of the battery cell 7. Multiple mounting screws 14 are connected to multiple first connection holes 13 respectively, so that the connection cover 12 is sealed and connected to the isolation chamber 11. The connection is stable and reliable, effectively preventing external moisture and foreign objects from entering the isolation chamber 11 and affecting the normal operation of the battery management system.

[0024] In this embodiment, the upper cover 2 is provided with a plurality of second connecting holes 21, which are arranged at intervals along the circumference of the upper cover 2. The cavity 1 is provided with mounting holes 15, which are arranged at intervals along the circumference of the cavity 1. The plurality of second connecting holes 21 communicate with the plurality of mounting holes 15. Specifically, external screws are used to pass through the second connecting holes 21 and connect and fix them to the mounting holes 15, thereby realizing the connection and fixation of the upper cover 2 to the cavity 1. The operation is simple and convenient.

[0025] In this embodiment, the cavity 1 is equipped with a high-pressure explosion-proof valve 8. Specifically, the high-pressure explosion-proof valve 8 helps to release the pressure inside the cavity 1 in a timely manner, improving the safety performance during use.

[0026] In this embodiment, the liquid cooling plate 3 is provided with a first connector 31 and a second connector 32, both of which are perpendicular to the liquid cooling plate 3. Specifically, a 50% ethylene glycol aqueous solution enters the liquid cooling plate 3 through the first connector 31 and the second connector 32, and then flows evenly through the internal distribution channels of the liquid cooling plate 3. This avoids the problem of uneven heat dissipation caused by concentrated flow of the 50% ethylene glycol aqueous solution in certain areas, thereby improving heat dissipation efficiency.

[0027] In this embodiment, the cavity 1 is equipped with a waterproof connector 9. Specifically, the waterproof connector 9 is a working component used to prevent external water and dust from entering the electrical connection point, thereby ensuring the normal operation of electrical equipment. The waterproof connector 9 typically consists of a plug and a socket, and its core components include contacts (pins), a housing, and seals. The plug and socket achieve electrical connection through insertion and removal, while the seals provide a waterproof seal, ensuring that moisture cannot penetrate in humid or underwater environments. The housing and seals of the waterproof connector 9 are typically made of high-temperature resistant, highly insulating engineering plastics or rubber materials to improve their durability and sealing performance. In addition, the contacts of the waterproof connector 9 are often made of copper alloy and are gold-plated or chrome-plated to enhance conductivity and corrosion resistance.

[0028] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A hydrocarbon coolant-immersed liquid-cooled energy storage tank, characterized in that: The device includes a cavity, a top cover on the top of the cavity, a liquid cooling plate on the bottom of the cavity, a liquid inlet on the cavity, a drain outlet spaced apart from the liquid inlet, and a liquid level sensor on the cavity. A battery cell is placed inside the cavity. The liquid inlet is located above the drain outlet, and the liquid level sensor is located beside the liquid inlet.

2. The hydrocarbon coolant immersion type liquid-cooled energy storage tank according to claim 1, characterized in that: The cavity is provided with an isolation chamber and a connecting cover connected to the isolation chamber. The isolation chamber is recessed from the front side of the cavity and is used to house an external battery management system. The connecting cover is provided with a first connecting hole, and there are multiple first connecting holes. The multiple first connecting holes are arranged at intervals along the circumference of the connecting cover. The isolation chamber is provided with mounting screws, and there are multiple mounting screws. The multiple mounting screws are arranged at intervals along the circumference of the isolation chamber and are respectively connected to the multiple first connecting holes.

3. The hydrocarbon coolant immersion type liquid-cooled energy storage tank according to claim 1, characterized in that: The upper cover is provided with a second connecting hole, and there are multiple second connecting holes arranged at intervals along the circumference of the upper cover. The cavity is provided with mounting holes, and there are multiple mounting holes arranged at intervals along the circumference of the cavity. The multiple second connecting holes are respectively connected to the multiple mounting holes.

4. The hydrocarbon coolant immersion type liquid-cooled energy storage tank according to claim 3, characterized in that: The cavity is equipped with a high-pressure explosion-proof valve.

5. The hydrocarbon coolant immersion type liquid-cooled energy storage tank according to claim 1, characterized in that: The liquid cooling plate is provided with a first connector and a second connector, both of which are perpendicular to the liquid cooling plate.

6. The hydrocarbon coolant immersion type liquid-cooled energy storage tank according to claim 1, characterized in that: The cavity is equipped with a waterproof connector.

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