An air-cooled energy storage device

Abstract

This utility model belongs to the field of battery safety protection technology and discloses an air-cooled energy storage device, including an energy storage cabinet. The cabinet contains at least two sets of air-cooling components for ventilation and heat dissipation, and also includes a temperature control system. Each air-cooling component includes a baffle, multiple cooling fans, and a bakelite board. The baffle is fixed inside the cabinet to guide airflow. The multiple cooling fans are embedded in the baffle to accelerate airflow. The bakelite board is fixed to the inside of the baffle for insulation and support, and has through holes positioned opposite to the cooling fans to allow airflow. In this utility model, multiple cooling fans accelerate airflow, and the through holes in the bakelite board guide the airflow, forming a multi-dimensional, three-dimensional heat dissipation system. This ensures that the airflow evenly covers the core heat-generating area of ​​the large cylindrical battery pack, effectively solving the problem of uneven temperature distribution caused by traditional single-sided fan layouts.

Description

Technical Field

[0001] This utility model belongs to the field of battery safety protection technology, specifically relating to an air-cooled energy storage device. Background Technology

[0002] Energy storage battery modules are the basic units that make up an energy storage system. Each energy storage battery module consists of multiple cells arranged in a certain series and parallel configuration, and integrates components such as wiring harnesses and busbars. Energy storage systems store electricity through energy storage batteries, enabling energy transfer and promoting the application of new energy sources; they can establish microgrids to provide electricity to areas without power; and they can regulate peak and frequency, improving the operational stability of the power system.

[0003] In the prior art, patent CN218849614U discloses an air-cooled energy storage device that uses a single fan layout. The cooling fan is directly fixed to the side wall of the cabinet, and the airflow can only cover a limited area, unable to fully penetrate to the core of the battery pack. Furthermore, the lack of a temperature control system causes the cooling fan to operate at high load for a long time, resulting in increased energy consumption and significant noise pollution. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides an air-cooled energy storage device, which aims to solve to some extent the technical problems in the prior art, such as the use of a single fan layout, with the cooling fan directly fixed to the side wall of the cabinet, where airflow can only cover a limited area and cannot fully penetrate to the core of the battery pack, and the lack of a temperature control system leading to long-term high-load operation of the cooling fan, resulting in increased energy consumption and significant noise pollution.

[0005] The technical solution of this utility model is: an air-cooled energy storage device, including an energy storage cabinet, wherein the energy storage cabinet is provided with at least two sets of air-cooling components for ventilation and heat dissipation, and the energy storage cabinet is also provided with a temperature control system.

[0006] The air-cooling component includes:

[0007] Baffles, fixed inside the energy storage cabinet, are used to guide the direction of airflow;

[0008] Multiple cooling fans are embedded in the baffle to accelerate airflow;

[0009] A bakelite board, fixed to the inside of the baffle, is used for insulation and support, and a through hole is provided on the bakelite board at a position opposite to the cooling fan to allow airflow.

[0010] The temperature control system includes:

[0011] Multiple temperature sensors are fixed in various areas inside the energy storage cabinet to monitor the temperature inside the cabinet in real time.

[0012] The controller is electrically connected to the temperature sensor and cooling fan, and adjusts the start, stop and speed of each cooling fan according to the temperature data for zone temperature control.

[0013] Specifically, when the temperature at any monitoring point exceeds the first threshold, the controller starts the corresponding area cooling fan and runs it at low speed; when it exceeds the second threshold, the cooling fans in the entire area run at full speed.

[0014] Preferably, a fixed frame is fixedly connected inside the energy storage cabinet, and a large cylindrical battery for storing electrical energy is arranged on the fixed frame, and the air outlet of the cooling fan is set towards the large cylindrical battery to achieve targeted heat dissipation.

[0015] Preferably, the bakelite board is fixed to the baffle by a pressure plate, and the pressure plate is fixedly connected to the outer edge of the inner side of the bakelite board.

[0016] Preferably, a plurality of copper sheets are fixedly connected at equal intervals on the inner side of the bakelite board, and the terminals on the large cylindrical battery abut against the copper sheets.

[0017] Preferably, the energy storage cabinet is also provided with an air inlet and an exhaust outlet to form a natural convection heat dissipation channel.

[0018] Preferably, the controller is also connected to an alarm device, which is triggered to issue an alarm when the internal temperature of the energy storage cabinet exceeds a second threshold.

[0019] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0020] 1. This application sets at least two sets of air-cooling components inside the energy storage cabinet, and multiple cooling fans accelerate airflow. The airflow is guided through the through holes on the bakelite board to form multi-dimensional three-dimensional heat dissipation, so that the airflow evenly covers the core heat-generating area of ​​the large cylindrical battery pack, effectively solving the problem of uneven temperature distribution caused by the traditional single-sided fan layout.

[0021] 2. In this application, the start-stop and speed of the cooling fan can be automatically adjusted according to the real-time temperature inside the energy storage cabinet. Compared with the fixed mode of the fan running at full speed for a long time in the traditional solution, it can reduce ineffective energy consumption and reduce operating noise. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a side view of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the left side of the air-cooled component of this utility model;

[0026] Figure 4 This is a schematic diagram of the right side of the air-cooled component of this utility model;

[0027] Figure 5 This is a power supply circuit diagram for the cooling fan of this utility model.

[0028] In the attached image:

[0029] 1. Energy storage cabinet; 2. Fixture; 3. Air-cooled assembly; 31. Baffle; 32. Cooling fan; 33. Bakelite board; 34. Through hole; 35. Copper sheet; 36. Pressure plate; 4. Large cylindrical battery. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0031] Please see Figure 1-5 A wind-cooled energy storage device includes an energy storage cabinet 1, the energy storage cabinet 1 is provided with at least two sets of wind-cooling components 3 for ventilation and heat dissipation, and the energy storage cabinet 1 is also provided with a temperature control system.

[0032] The air-cooling assembly 3 includes a baffle 31, multiple cooling fans 32, and a bakelite board 33. The baffle 31 is fixed inside the energy storage cabinet 1 to guide airflow. The multiple cooling fans 32 are embedded in the baffle 31 to accelerate airflow. The bakelite board 33 is fixed to the inside of the baffle 31 for insulation and support, and through holes 34 are provided on the bakelite board 33 opposite to the cooling fans 32 to allow airflow. At least two sets of air-cooling assemblies 3 are installed inside the energy storage cabinet 1. The multiple cooling fans 32 accelerate airflow and guide the airflow through the through holes 34 on the bakelite board 33, forming a multi-dimensional three-dimensional heat dissipation. This allows the airflow to evenly cover the core heat-generating area of ​​the four large cylindrical batteries, effectively solving the problem of uneven temperature distribution caused by the traditional single-sided fan layout.

[0033] The temperature control system includes multiple temperature sensors and a controller. The multiple temperature sensors are fixed in multiple areas inside the energy storage cabinet 1 to monitor the temperature inside the energy storage cabinet 1 in real time. The controller is electrically connected to the temperature sensors and the cooling fans 32, and adjusts the start, stop and speed of each cooling fan 32 according to the temperature data for zoned temperature control.

[0034] When the temperature at any monitoring point exceeds the first threshold, the controller starts the corresponding area cooling fan 32 and runs it at a low speed; when it exceeds the second threshold, the cooling fan 32 in the entire area runs at full speed.

[0035] If any sensor detects that the temperature exceeds the first threshold, which is 40°C, only the corresponding cooling fan 32 will be activated and run at a low speed to avoid wasting global energy. If the temperature continues to rise to the second threshold, which is 50°C, the cooling fans 32 in the entire area will be triggered to run at full speed, and the alarm device will be activated at the same time. Compared with the fixed mode of the fans running at full speed for a long time in the traditional solution, it can reduce ineffective energy consumption and reduce operating noise.

[0036] In some embodiments, a mounting frame 2 is fixedly connected inside the energy storage cabinet 1. The mounting frame 2 is multi-layered, and each layer of the mounting frame 2 is equipped with a large cylindrical battery 4 for storing electrical energy. The air outlet of the cooling fan 32 is positioned towards the large cylindrical battery 4 to achieve targeted heat dissipation. The air outlet of the cooling fan 32 is 50mm away from the surface of the large cylindrical battery 4, forming a stable airflow impact zone that directly removes heat from the surface and terminals of the large cylindrical battery 4.

[0037] In some embodiments, the bakelite board 33 is fixed to the baffle 31 by a pressure plate 36, and the pressure plate 36 is fixedly connected to the outer edge of the inner side of the bakelite board 33. The pressure plate 36 presses against the outer edge of the inner side of the bakelite board 33 and is locked to the pre-drilled threaded hole of the baffle 31 by bolts, thus fixing the bakelite board 33 to the baffle 31. In addition, the pressure plate 36 is made of flame-retardant PC material, which can maintain structural strength in high-temperature environments and ensure long-term insulation reliability.

[0038] In some embodiments, a plurality of copper sheets 35 are fixedly connected at equal intervals on the inner side of the bakelite board 33, and the terminals on the large cylindrical battery 4 abut against the copper sheets 35. The plurality of copper sheets 35 are connected in a certain series-parallel manner.

[0039] In some embodiments, the energy storage cabinet 1 is further provided with an air inlet and an exhaust outlet. The air inlet can be located on the front and rear sides of the energy storage cabinet 1, while the exhaust outlet can be located on the left and right sides of the energy storage cabinet 1 to form a natural convection heat dissipation channel.

[0040] In some embodiments, the controller is also connected to an alarm device. When the internal temperature of the energy storage cabinet 1 exceeds a second threshold, the alarm device is triggered to issue an alarm. When the temperature in any area of ​​the energy storage cabinet 1 exceeds the second threshold, the alarm device immediately sounds a buzzer and flashes a red light. At the same time, the controller cuts off the charging and discharging circuit of the large cylindrical battery pack to prevent thermal runaway from spreading.

[0041] When the large cylindrical battery 4 in the energy storage cabinet 1 is charging and discharging, the temperature sensor on the multi-layer fixing frame 2 monitors the temperature of each area in real time and transmits the data to the controller. When the temperature at any monitoring point exceeds the first threshold, the controller only starts the corresponding area cooling fan 32 to run at low speed. The airflow passes through the through holes 34 of the bakelite board 33 and impacts the surface of the large cylindrical battery 4 in a directional manner, quickly removing local heat. If the temperature rises to the second threshold, the cooling fan 32 in the entire area runs at full speed, and at the same time triggers the audible and visual alarm and cuts off the battery charging and discharging circuit to prevent thermal runaway and ensure that the large cylindrical battery pack operates stably within a safe temperature range.

[0042] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wind-cooled energy storage device, comprising an energy storage cabinet (1), characterized in that, The energy storage cabinet (1) is equipped with at least two sets of air-cooled components (3) for ventilation and heat dissipation, and the energy storage cabinet (1) is also equipped with a temperature control system. The air-cooled component (3) includes: A baffle (31) is fixed inside the energy storage cabinet (1) to guide the airflow direction; Multiple cooling fans (32) are embedded in the baffle (31) to accelerate airflow; A bakelite board (33) is fixed to the inside of the baffle (31) for insulation and support, and a through hole (34) is provided on the bakelite board (33) opposite to the cooling fan (32) to allow airflow to pass through; The temperature control system includes: Multiple temperature sensors are fixed in multiple areas inside the energy storage cabinet (1) to monitor the temperature inside the energy storage cabinet (1) in real time; The controller is electrically connected to the temperature sensor and the cooling fan (32) and adjusts the start, stop and speed of each cooling fan (32) according to the temperature data for zone temperature control. When the temperature at any monitoring point exceeds the first threshold, the controller starts the corresponding area cooling fan (32) and runs at low speed; when it exceeds the second threshold, the cooling fan (32) of the entire area runs at full speed.

2. The air-cooled energy storage device as described in claim 1, characterized in that, The energy storage cabinet (1) is fixedly connected to a frame (2), and a large cylindrical battery (4) for storing electrical energy is arranged on the frame (2), and the air outlet of the cooling fan (32) is set towards the large cylindrical battery (4).

3. The air-cooled energy storage device as described in claim 1, characterized in that, The bakelite board (33) is fixed to the baffle (31) by a pressure plate (36), and the pressure plate (36) is fixedly connected to the outer edge of the inner side of the bakelite board (33).

4. The air-cooled energy storage device as described in claim 2, characterized in that, Multiple copper plates (35) are fixedly connected at equal intervals on the inner side of the bakelite board (33), and the electrode posts on the large cylindrical battery (4) abut against the copper plates (35).

5. The air-cooled energy storage device as described in claim 1, characterized in that, The energy storage cabinet (1) is also provided with an air inlet and an exhaust outlet to form a natural convection heat dissipation channel.

6. The air-cooled energy storage device as described in claim 1, characterized in that, The controller is also connected to an alarm device. When the internal temperature of the energy storage cabinet (1) exceeds the second threshold, the alarm device is triggered to issue an alarm.

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