BMS board heat dissipation structure

Abstract

The utility model provides a BMS board heat dissipation structure which comprises a fixed seat, a movable seat is movably installed on the fixed seat, openings are formed in the inner wall of the movable seat and the inner wall of the fixed seat, limiting columns are movably installed in the openings, a circuit board is movably installed between the limiting columns, a fixed box is fixedly installed on the top of the movable seat, and the fixed box is fixedly installed on the top of the movable seat. Fixing rods are fixed in the fixing box, an exhaust fan is fixedly mounted between the fixing rods, a threaded seat is fixed on the fixing seat, and a threaded column is rotatably mounted on the threaded seat. According to the BMS plate heat dissipation structure, when the BMS plate heat dissipation structure is used, a heat dissipation fan blows air downwards, air flow moves in an inclined hole, the air flow passing through the interior of the inclined hole is matched with cooling liquid in a circulating pipe, the cooling liquid is cooled through the air flow, the cooling liquid can also cool the air flow, and rapid cooling of the BMS plate is completed through the air flow and the cooling liquid at the same time.

Description

Technical Field

[0001] This utility model relates to the field of BMS board equipment, specifically a heat dissipation structure for a BMS board. Background Technology

[0002] The BMS board, or battery management system control board, is a common component in battery modules. However, under certain operating conditions, such as when equalization is enabled, the heat generated by the BMS board can increase several times. Excessive BMS board temperature causes the temperature of the directly opposite battery cells to become too high, resulting in faster cell lifespan degradation. Therefore, it is necessary to cool down the BMS board.

[0003] According to patent document CN213520098U, a BMS board heat dissipation mechanism, a power battery assembly, and a vehicle are disclosed. The BMS board includes two opposing water-cooled plates, with the BMS board sandwiched between them. Each water-cooled plate has at least one inlet and at least one outlet, which are connected to the battery pack water-cooling system circuit. A mounting bracket is fixed to the bottom side of the water-cooled plate away from the BMS board. The mounting bracket has a first mounting hole for fixed connection to the battery housing. In use, the water-cooled plate is fixed to the battery housing via the mounting bracket, achieving a cooling effect and effectively preventing the BMS board from overheating, thus improving the heat dissipation performance. However, while this solution achieves cooling, a single cooling method cannot accelerate the heat dissipation speed of the BMS board, resulting in inconvenience during use. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a heat dissipation structure for a BMS board, thereby solving the problems mentioned in the background section. This invention features a novel structure. During use, the cooling fan blows air downwards, and the airflow moves inside the oblique holes. The airflow passing through the oblique holes cooperates with the coolant inside the circulation pipe. The airflow cools the coolant, and the coolant also cools the airflow. Through the simultaneous cooling of the airflow and coolant, the BMS board is rapidly cooled.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a BMS board heat dissipation structure, comprising a fixed base, a movable base movably mounted on the fixed base, openings on the inner walls of both the movable base and the fixed base, a limiting post movably mounted inside the opening, a circuit board movably mounted between the limiting posts, a fixed box fixedly mounted on the top of the movable base, a fixed rod fixedly mounted inside the fixed box, a cooling fan fixedly mounted between the fixed rods, a threaded seat fixedly mounted on the fixed base, and a threaded post rotatably mounted on the threaded seat.

[0006] Furthermore, the fixed base has a sliding groove, and a slider is movably installed inside the sliding groove, with one end of the slider fixed to the movable base.

[0007] Furthermore, an inlet pipe and a drain pipe are fixedly installed on the movable seat, and a bearing seat is fixed on the slider, which is fixedly installed on the threaded column.

[0008] Furthermore, the limiting post has an internal cavity, a damper is fixedly installed inside the cavity, and a support mechanism is fixed to one end of the limiting post.

[0009] Furthermore, the damper is movably mounted inside the support mechanism, and one end of the support mechanism and the damper is fixed inside the opening.

[0010] Furthermore, a circulation pipe is fixedly installed between the water inlet pipe and the water outlet pipe. The circulation pipe has an arc-shaped groove and an oblique hole. One end of the oblique hole is located on the inner wall of the movable seat, and the other end of the oblique hole is installed inside the fixed box.

[0011] The beneficial effects of this utility model are:

[0012] 1. In this BMS board heat dissipation structure, the cooling fan blows air downwards during use, and the airflow moves inside the inclined holes. The airflow passing through the inclined holes cooperates with the coolant inside the circulation pipe. The airflow cools the coolant, and the coolant can also cool the airflow. The BMS board is rapidly cooled by the airflow and coolant working together.

[0013] 2. In this BMS board heat dissipation structure, an arc-shaped groove is fixed to the side of the circulation pipe. The circulation pipe at the arc-shaped groove protrudes inward. The protrusion blocks and slows down the coolant, thereby extending the flow speed of the coolant inside the circulation pipe, thus completing the rapid adsorption of the internal high temperature.

[0014] 3. In this BMS board heat dissipation structure, the movable seat moves downward under the push of the threaded column. The downward movement of the movable seat achieves the compression and fixation of the circuit board through the limiting column. The limiting column realizes the fixed installation of circuit boards of different thicknesses. In addition, the limiting column cooperates with the damper and the support mechanism to achieve buffering and vibration reduction protection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a heat dissipation structure for a BMS board according to the present invention;

[0016] Figure 2 This is a schematic diagram of the sliding groove of a BMS board heat dissipation structure according to the present invention;

[0017] Figure 3This is a schematic diagram of the damper structure of a BMS board heat dissipation structure according to the present invention;

[0018] Figure 4 This is a top cross-sectional view of the movable seat of a BMS board heat dissipation structure according to the present invention.

[0019] Figure 5 This is a side cross-sectional view of the movable seat of a BMS board heat dissipation structure according to the present invention.

[0020] In the diagram: 1. Fixed seat; 2. Movable seat; 3. Water inlet pipe; 4. Drain pipe; 5. Opening; 6. Limiting post; 7. Circuit board; 8. Fixing box; 9. Threaded seat; 10. Threaded post; 11. Slide groove; 12. Slider; 13. Damper; 14. Support mechanism; 15. Circulation pipe; 16. Arc groove; 17. Angled hole; 18. Fixing rod; 19. Cooling fan. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please see Figures 1 to 5 This utility model provides a technical solution: a heat dissipation structure for a BMS board, including a fixed base 1, a movable base 2 movably mounted on the fixed base 1, and openings 5 ​​on the inner walls of both the movable base 2 and the fixed base 1. Limiting posts 6 are movably mounted inside the openings 5, and a circuit board 7 is movably mounted between the limiting posts 6. A fixed box 8 is fixedly mounted on the top of the movable base 2, and a fixing rod 18 is fixedly mounted inside the fixed box 8. A cooling fan 19 is fixedly mounted between the fixing rods 18. A threaded seat 9 is fixed on the fixed base 1, and a threaded post 10 is rotatably mounted on the threaded seat 9. A sliding groove 11 is opened on the fixed base 1, and a slider 12 is movably mounted inside the sliding groove 11. One end of the slider 12 is fixed to the movable base 2, and the threaded post 10 moves on the slider 12 via a bearing. When the threaded post 10 moves, the position of the movable base 2 is adjusted by the slider 12.

[0023] In this embodiment, an inlet pipe 3 and a drain pipe 4 are fixedly installed on the movable seat 2, a bearing seat is fixed on the slider 12, the bearing seat is fixedly installed on the threaded column 10, a cavity is opened inside the limiting column 6, a damper 13 is fixedly installed inside the cavity, a support mechanism 14 is fixed to one end of the limiting column 6, the damper 13 is movably installed inside the support mechanism 14, one end of the support mechanism 14 and the damper 13 is fixed inside the opening 5, a circulation pipe 15 is fixedly installed between the inlet pipe 3 and the drain pipe 4, an arc groove 16 is opened on the circulation pipe 15, an oblique hole 17 is opened at the arc groove 16, one end of the oblique hole 17 is opened on the inner wall of the movable seat 2, and the other end of the oblique hole 17 is installed inside the fixed box 8. The support mechanism 14 is a support spring, the support spring pushes the limiting column 6 to move upward, and the limiting column 6 completes the initial limiting and fixing of the circuit board 7 under the push of the support mechanism 14.

[0024] In use, the device first moves the movable base 2 upwards, opening up the internal space. The limiting posts 6 then move upwards or downwards, retracting into the opening 5. The circuit board 7 is then installed between the limiting posts 6. The support mechanism 14 pushes the limiting posts 6 upwards, completing the initial compression and fixation of the circuit board 7. Later, the threaded post 10 rotates, pushing the slider 12 and the movable base 2 downwards. As the movable base 2 moves downwards, the limiting posts 6 are compressed and retracted into the opening 5. With increasing pressure, the moving space of the compression posts 6 decreases, completing the compression and fixation of the circuit board 7, facilitating quick installation and removal of the circuit board 7. During use, the inlet pipe 3 and the outlet pipe 4 are connected to external water pipes, allowing the coolant to flow inside the circulation pipe 15. This flow absorbs the high temperature generated by the circuit board 7. Simultaneously, the cooling fan 19 is activated, and the airflow moves inside the inclined hole 17. The airflow passing through the inclined hole 17 works in conjunction with the coolant inside the circulation pipe 15. The airflow cools the coolant, and the coolant also cools the airflow. Through the simultaneous cooling of the airflow and coolant, the BMS board is rapidly cooled. The circulation pipe 15 at the arc groove 16 protrudes inward, and the protrusion blocks and slows down the coolant flow, thereby extending the speed of the coolant flow inside the circulation pipe 15 and thus rapidly absorbing the internal high temperature.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A heat dissipation structure for a BMS board, comprising a mounting base (1), characterized in that: A movable seat (2) is movably mounted on the fixed seat (1). Both the movable seat (2) and the fixed seat (1) have openings (5) on their inner walls. A limiting post (6) is movably mounted inside the opening (5). A circuit board (7) is movably mounted between the limiting posts (6). A fixed box (8) is fixedly mounted on the top of the movable seat (2). A fixing rod (18) is fixed inside the fixed box (8). A cooling fan (19) is fixedly mounted between the fixing rods (18). A threaded seat (9) is fixed on the fixed seat (1). A threaded post (10) is rotatably mounted on the threaded seat (9).

2. The heat dissipation structure of a BMS board according to claim 1, characterized in that: The fixed seat (1) has a sliding groove (11), and a slider (12) is movably installed inside the sliding groove (11). One end of the slider (12) is fixed on the movable seat (2).

3. The heat dissipation structure of a BMS board according to claim 2, characterized in that: The movable seat (2) is fixedly installed with a water inlet pipe (3) and a drain pipe (4), and the slider (12) is fixedly installed with a bearing seat, which is fixedly installed on the threaded column (10).

4. The heat dissipation structure of a BMS board according to claim 1, characterized in that: The limiting post (6) has a cavity inside, and a damper (13) is fixedly installed inside the cavity. A support mechanism (14) is fixed to one end of the limiting post (6).

5. The heat dissipation structure of a BMS board according to claim 4, characterized in that: The damper (13) is movably installed inside the support mechanism (14), and one end of the support mechanism (14) and the damper (13) is fixed inside the opening (5).

6. The heat dissipation structure of a BMS board according to claim 3, characterized in that: A circulation pipe (15) is fixedly installed between the water inlet pipe (3) and the drain pipe (4). An arc-shaped groove (16) is opened on the circulation pipe (15), and an oblique hole (17) is opened at the arc-shaped groove (16). One end of the oblique hole (17) is opened on the inner wall of the movable seat (2), and the other end of the oblique hole (17) is installed inside the fixed box (8).

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