Liquid-cooled battery pack device of energy storage power station

Abstract

The utility model relates to the technical field of liquid-cooled battery packs, and discloses a liquid-cooled battery pack device of an energy storage power station, which comprises an outer frame, a protective shell fixedly connected to the side wall of the outer frame, a support frame fixedly connected to the bottom of the protective shell, an electric box fixedly connected to the inside of the support frame, and a side wall of the support frame fixedly connected to the side wall of the outer frame. A heat dissipation frame is arranged in the outer frame, a limiting assembly is arranged on the side wall of the outer frame, a storage battery is fixedly connected to the inner wall of the heat dissipation frame, and a cooling assembly is arranged in the heat dissipation frame; the cooling assembly comprises a heat dissipation copper pipe. According to the utility model, the heat dissipation fan generates wind power, and cold air acts on the side wall of the heat exchange plate, so that the temperature of the heat exchange plate is reduced, and the temperature of liquid in the first connecting pipe, the second connecting pipe and the heat dissipation copper pipe is reduced after the temperature is reduced, thereby solving the problems that the high temperature accelerates the increase of the internal resistance of the battery, the charge-discharge efficiency is reduced and the capacity attenuation is accelerated; and the stability of the liquid-cooled battery pack device of the energy storage power station is improved.

Description

Technical Field

[0001] This utility model relates to the field of liquid-cooled battery pack technology, and in particular to a liquid-cooled battery pack device for energy storage power stations. Background Technology

[0002] In the field of energy storage power stations, the efficient operation and safety of battery packs directly affect the stability of the power grid and the efficiency of energy storage. With the large-scale development of energy storage systems, battery packs generate a lot of heat during charging and discharging. If heat cannot be dissipated in time, it will lead to battery performance degradation and even safety hazards.

[0003] In existing technologies, thermal management devices for battery packs in energy storage power stations mostly employ air cooling or traditional liquid cooling structures. Air cooling technology uses forced convection via fans, utilizing air as the heat transfer medium to remove heat from the battery surface. Its mechanical structure mainly consists of a fan, airflow ducts, and heat dissipation grilles, relying on airflow rate to achieve heat exchange. Traditional liquid cooling structures, on the other hand, circulate coolant within metal pipes, contacting the battery surface and utilizing the high specific heat capacity of the liquid to absorb heat. This is commonly seen in series piping layouts, where a water pump drives the coolant to flow in a fixed loop, transferring heat from the battery pack to an external heat exchanger.

[0004] However, traditional liquid-cooled structures in existing technologies have significant drawbacks. Due to their fixed pipeline layout and single-flow-rate coolant circulation mode, they struggle to accurately match the varying heat generation differences in different areas of the battery pack. When high temperatures are generated in localized areas of the battery pack due to high-load charging and discharging, the coolant in traditional liquid-cooling systems cannot quickly focus on these high-temperature areas for targeted heat dissipation, resulting in prolonged overheating of the batteries in these areas. This not only accelerates the increase in battery internal resistance, significantly reducing charging and discharging efficiency, but also exacerbates the rate of battery capacity decay, shortens the overall lifespan of the battery pack, and increases the risk of thermal runaway, severely impacting the stability and economic efficiency of energy storage power stations. Therefore, a liquid-cooled battery pack device for energy storage power stations is proposed to address these issues. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a liquid-cooled battery pack device for energy storage power stations, which aims to improve the problem that high temperature accelerates the increase of battery internal resistance, resulting in reduced charging and discharging efficiency and accelerated capacity decay in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A liquid-cooled battery pack device for an energy storage power station includes an outer frame, a protective shell fixedly connected to the side wall of the outer frame, a support frame fixedly connected to the bottom of the protective shell, an electrical box fixedly connected inside the support frame, a side wall of the support frame fixedly connected to the side wall of the outer frame, a heat dissipation frame provided inside the outer frame, a limit component provided on the side wall of the outer frame, a battery fixedly connected to the inner wall of the heat dissipation frame, and a cooling component provided inside the heat dissipation frame.

[0008] The cooling assembly includes a heat dissipation copper pipe, the outer wall of which is fixedly connected to the inside of the heat dissipation frame. One end of the heat dissipation copper pipe is fixedly connected to a second connecting pipe, and the other end of the second connecting pipe is fixedly connected to a first connecting pipe. One end of the first connecting pipe is fixedly connected to a heat exchange plate. The outer wall of the heat exchange plate is disposed inside the protective shell, and a cooling fan is fixedly connected inside the protective shell.

[0009] As a further description of the above technical solution:

[0010] The limiting component includes a slide rail, the sidewall of which is fixedly connected to the sidewall of the outer frame.

[0011] As a further description of the above technical solution:

[0012] A slider is slidably connected to the outer wall of the slide rail, and the side wall of the slider is fixedly connected to the side wall of the heat sink frame.

[0013] As a further description of the above technical solution:

[0014] A hollow plate is fixedly connected to the side wall of the outer frame, and a locking post is slidably connected inside the hollow plate.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the card post is slidably connected to the inside of the outer frame, and the outer wall of the card post is slidably connected to the inside of the heat dissipation frame.

[0017] As a further description of the above technical solution:

[0018] One end of the locking pin is fixedly connected to a connecting post, and a handle is fixedly connected to the outer wall of the connecting post.

[0019] As a further description of the above technical solution:

[0020] The handle sidewall is slidably connected to the outer frame sidewall, and the connecting column sidewall is slidably connected to the hollow slab sidewall.

[0021] As a further description of the above technical solution:

[0022] A spring is provided on the outer wall of the locking post. One end of the spring is fixedly connected to the inner wall of the hollow plate, and the other end of the spring is fixedly connected to the outer wall of the locking post.

[0023] This utility model has the following beneficial effects:

[0024] In this invention, a cooling fan generates airflow, which is then applied to the sidewall of the heat exchange plate, thereby lowering the temperature of the heat exchange plate. This temperature reduction causes the liquid temperature inside the first and second connecting pipes, as well as the cooling copper pipe, to decrease as well, achieving a highly efficient cooling effect. This solves the problem that high temperatures accelerate the increase of battery internal resistance, leading to reduced charging and discharging efficiency and faster capacity decay, thus improving the stability of the liquid-cooled battery pack device in the energy storage power station.

[0025] In this invention, by pulling the handle, the connecting column is moved, and the connecting column moves the locking column to disengage it from the interior of the heat sink frame, thus achieving the effect of quick battery removal. This solves the problem that if a single battery fails, the entire battery pack needs to be removed, which is time-consuming, labor-intensive, and increases labor costs, thereby improving the convenience of the liquid-cooled battery pack device in the energy storage power station. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of the liquid-cooled battery pack device for the energy storage power station proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the exploded structure of the protective shell of the liquid-cooled battery pack device for the energy storage power station proposed in this utility model.

[0028] Figure 3 This is a schematic diagram of the outer frame structure of the liquid-cooled battery pack device for the energy storage power station proposed in this utility model.

[0029] Figure 4 This is a schematic cross-sectional view of the heat dissipation frame structure of the liquid-cooled battery pack device for the energy storage power station proposed in this utility model.

[0030] Figure 5 for Figure 3 Enlarged view of point A in the middle.

[0031] Legend:

[0032] 1. Outer frame; 2. Protective shell; 3. Support frame; 4. Battery; 5. Heat dissipation frame; 6. Cooling fan; 7. Heat exchange plate; 8. First connecting pipe; 9. Second connecting pipe; 10. Electrical box; 11. Slider; 12. Slide rail; 13. Copper heat dissipation pipe; 14. Connecting post; 15. Hollow plate; 16. Spring; 17. Locking post; 18. Handle. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figure 1 , Figure 2 and Figure 4 This utility model provides an embodiment of a liquid-cooled battery pack device for an energy storage power station, including an outer frame 1, a protective shell 2 fixedly connected to the side wall of the outer frame 1, a support frame 3 fixedly connected to the bottom of the protective shell 2, an electrical box 10 fixedly connected inside the support frame 3, the electrical box 10 including core electrical components such as BMS, DC contactor / circuit breaker, fuse, pre-charge circuit, current / voltage sensor, etc., which are existing technologies and will not be described in detail here. The side wall of the support frame 3 is fixedly connected to the side wall of the outer frame 1, a heat dissipation frame 5 is provided inside the outer frame 1, a limit component is provided on the side wall of the outer frame 1, and a battery 4 is fixedly connected to the inner wall of the heat dissipation frame 5. The battery 4 is a CATL 3.2V 100Ah lithium iron phosphate battery produced by CATL, which provides a stable and reliable DC power supply for the liquid-cooled battery pack device of the energy storage power station. This is common knowledge and will not be described in detail here. A cooling component is provided inside the heat dissipation frame 5.

[0035] The cooling assembly includes a heat dissipation copper pipe 13, the outer wall of which is fixedly connected to the inside of the heat dissipation frame 5. One end of the heat dissipation copper pipe 13 is fixedly connected to a second connecting pipe 9, and the other end of the second connecting pipe 9 is fixedly connected to a first connecting pipe 8. One end of the first connecting pipe 8 is fixedly connected to a heat exchange plate 7, the outer wall of which is located inside the protective shell 2. A cooling fan 6 is fixedly connected inside the protective shell 2. The cooling fan 6 is an AFB0612DH type axial flow fan manufactured by Delta Electronics, which is used to provide forced air cooling for the core components of the lifting ring tensile testing device. This is existing technology and will not be described in detail here.

[0036] Reference Figure 1 , Figure 3 and Figure 5The limiting component includes a slide rail 12, the side wall of which is fixedly connected to the side wall of the outer frame 1. A slider 11 is slidably connected to the outer wall of the slide rail 12. The slide rail 12 is used to slide in cooperation with the slider 11, thereby limiting the position of the heat sink 5. The heat sink 5 drives the slider 11 to move linearly along the side wall of the slide rail 12, achieving the effect of limiting the heat sink 5. The side wall of the slider 11 is fixedly connected to the side wall of the heat sink 5. A hollow plate 15 is fixedly connected to the side wall of the outer frame 1. A locking post 17 is slidably connected inside the hollow plate 15. The outer wall of the locking post 17 is slidably connected to the inside of the outer frame 1 and the inside of the heat sink 5. One end of the locking post 17 is fixedly connected to a connecting post 14. A handle 18 is fixedly connected to the outer wall of the connecting post 14. The side wall of the handle 18 is slidably connected to the side wall of the outer frame 1. The side wall of the connecting post 14 is slidably connected to the side wall of the hollow plate 15. A spring 16 is provided on the outer wall of the locking post 17. One end of the spring 16 is fixedly connected to the inner wall of the hollow plate 15, and the other end of the spring 16 is fixedly connected to the outer wall of the locking post 17. By pulling the handle 18, the connecting post 14 is moved, and then the locking post 17 is moved through the connecting post 14, causing the locking post 17 to disengage from the interior of the heat sink frame 5. This improves the battery removal effect and increases the efficiency of battery replacement.

[0037] Working principle: In the liquid-cooled battery pack device of the energy storage station, the current is regulated by the electrical box 10, and then the current is supplied to the inside of the battery 4 through the electrical box 10 to store electricity for the battery 4.

[0038] Subsequently, when cooling the battery 4, the cooling fan 6 first generates airflow, which then acts on the side wall of the heat exchange plate 7 to lower the temperature of the heat exchange plate 7. After the temperature of the heat exchange plate 7 decreases, the temperature of the first connecting pipe 8, the second connecting pipe 9, and the heat dissipation copper pipe 13 also decreases. After the temperature of the heat dissipation copper pipe 13 decreases, the temperature of the heat dissipation frame 5 also decreases. The inner wall of the heat dissipation frame 5 is attached to the outer wall of the battery 4. After the temperature of the heat dissipation frame 5 decreases, the heat generated by the battery 4 is carried away, thereby achieving a highly efficient cooling effect.

[0039] Next, when disassembling the battery 4, the handle 18 needs to be pulled first. During the process of the handle 18 being pulled, the connecting column 14 is moved along with it. During the movement of the connecting column 14, the outer wall clamp 17 is moved. During the movement of the clamp 17, its outer wall is disengaged from the interior of the heat sink frame 5. At the same time, one end of the spring 16 is connected to the interior of the hollow plate 15, and the other end is connected to the outer wall of the clamp 17, thus providing the clamp 17 with a rebound force and controlling the stable rebound of the clamp 17 inside the heat sink frame 5, thereby achieving the effect of quickly disassembling the battery 4.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A liquid-cooled battery pack arrangement for an energy storage plant comprising an outer frame (1), characterized in that: The outer frame (1) is fixedly connected to a protective shell (2) on its side wall. The protective shell (2) is fixedly connected to a support frame (3) at its bottom. An electrical box (10) is fixedly connected inside the support frame (3). The side wall of the support frame (3) is fixedly connected to the side wall of the outer frame (1). A heat dissipation frame (5) is provided inside the outer frame (1). A limit component is provided on the side wall of the outer frame (1). A storage battery (4) is fixedly connected to the inner wall of the heat dissipation frame (5). A cooling component is provided inside the heat dissipation frame (5). The cooling assembly includes a heat dissipation copper pipe (13), the outer wall of which is fixedly connected to the inside of the heat dissipation frame (5). One end of the heat dissipation copper pipe (13) is fixedly connected to a second connecting pipe (9), and the other end of the second connecting pipe (9) is fixedly connected to a first connecting pipe (8). One end of the first connecting pipe (8) is fixedly connected to a heat exchange plate (7), the outer wall of which is disposed inside the protective shell (2). A cooling fan (6) is fixedly connected inside the protective shell (2).

2. The liquid-cooled battery pack apparatus of an energy storage power plant of claim 1, wherein: The limiting component includes a slide rail (12), the side wall of which is fixedly connected to the side wall of the outer frame (1).

3. The liquid-cooled battery pack apparatus of an energy storage power plant of claim 2, wherein: The slide rail (12) has a slider (11) slidably connected to its outer wall, and the side wall of the slider (11) is fixedly connected to the side wall of the heat dissipation frame (5).

4. The liquid-cooled battery pack apparatus of an energy storage power plant of claim 3, wherein: A hollow plate (15) is fixedly connected to the side wall of the outer frame (1), and a locking post (17) is slidably connected inside the hollow plate (15).

5. The liquid-cooled battery pack apparatus of an energy storage power plant of claim 4, wherein: The outer wall of the card post (17) is slidably connected to the inside of the outer frame (1), and the outer wall of the card post (17) is slidably connected to the inside of the heat dissipation frame (5).

6. The liquid-cooled battery pack apparatus of an energy storage power plant of claim 5, wherein: One end of the locking post (17) is fixedly connected to a connecting post (14), and a handle (18) is fixedly connected to the outer wall of the connecting post (14).

7. The liquid-cooled battery pack device for an energy storage power station according to claim 6, characterized in that: The handle (18) is slidably connected to the side wall of the outer frame (1), and the connecting column (14) is slidably connected to the side wall of the hollow plate (15).

8. The liquid-cooled battery pack apparatus of an energy storage power plant of claim 7, wherein: A spring (16) is provided on the outer wall of the locking post (17). One end of the spring (16) is fixedly connected to the inner wall of the hollow plate (15), and the other end of the spring (16) is fixedly connected to the outer wall of the locking post (17).

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