Circuit board assembly suitable for hydrogen fuel cell

Abstract

The utility model relates to the technical field of circuit boards, and discloses a circuit board assembly suitable for a hydrogen fuel cell, which comprises circuit mainboards stacked with each other, the circuit mainboards are arranged and fixed at equal intervals through screw assemblies installed at the corner ends of the circuit mainboards, and one side of an arm rod of each screw assembly is fixedly sleeved with a heat dissipation plate frame. Multiple sets of heat extraction fans are arranged on the plate face of the heat dissipation plate frame, and dust covers are installed at air inlets of the heat extraction fans. According to the utility model, the circuit mainboards are sequentially arranged and installed at intervals up and down by utilizing the screw rod assemblies, the circuit boards can be installed in a sub-control manner, and a certain space is reserved to facilitate the circulation and heat dissipation of mechanical heat, and meanwhile, the heat dissipation plate frame is assembled on one side of the circuit mainboards, and the heat dissipation efficiency is improved by utilizing the combination of the heat extraction fan and the dust cover on the plate surface. The mechanical heat generated by the circuit mainboard can be automatically blown and dissipated, the heat dissipation and circulation efficiency of the mechanical heat is improved, and the long-term operation and use performance of the circuit mainboard is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to a circuit board assembly suitable for hydrogen fuel cells. Background Art

[0002] Hydrogen fuel cells can convert chemical energy directly into electrical energy efficiently and cleanly. They are a more advanced conversion technology than conventional heat engines. The rapid development of fuel cell technology has brought major opportunities for the transformation of energy and power. Small hydrogen fuel cells have many application scenarios. With the advantages of high energy density, long battery life, light weight, fast energy replenishment, and rapid cost reduction after large-scale mass production, they can be applied to two-wheeled vehicles, drones, mobile power supplies, small travel UPS, unmanned express vehicles and many other scenarios. The battery circuit board plays a vital role in the battery system, balancing charging, protecting the battery, and controlling output. Therefore, the battery circuit board, as a control board, is an indispensable and important component in the battery.

[0003] As shown in the existing patent technology: After searching, the China Patent Network has disclosed a battery pack circuit board (public announcement number CN220173487U). This type of circuit board sets the power control module with high heat generation on the second board, and sets the main control module, power communication module and data acquisition and balancing module on the first board. The isolation column is used to separate the first board and the second board by a sufficient distance, so that the heat dissipated by the power control module will not affect the main control module, power communication module and data acquisition and balancing module on the first board, thereby extending the service life.

[0004] However, there are still some shortcomings in the above-mentioned public patents and the battery circuit boards adopted in the existing market: the existing method of using isolation columns to assemble the circuit board sub-controls to keep a certain distance for heat dissipation, although the sub-control installation can provide heat dissipation space, its independent heat dissipation effect is poor, and mechanical heat is easily gathered around the circuit board, and it is impossible to effectively dissipate heat. To this end, those skilled in the art provide a circuit board assembly suitable for hydrogen fuel cells to solve the problems raised in the above background technology. Utility Model Content

[0005] The main purpose of the utility model is to provide a circuit board assembly suitable for hydrogen fuel cells, which can effectively solve the problem of poor mechanical heat dissipation effect of existing battery circuit boards in the background technology.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a circuit board assembly suitable for hydrogen fuel cells, comprising circuit boards stacked on each other, the circuit boards are arranged and fixed at equal intervals by screw assemblies installed at their corner ends, and a heat sink frame is sleeved and fixed on one side of the arm of the screw assembly, and the board surface of the heat sink frame is arranged with multiple groups of heat exhaust fans, and the air inlet of the heat exhaust fan is installed with a dust cover;

[0007] The screw assembly includes a positioning screw that is symmetrically installed through the corner end of the circuit main board. The outer side of the arm of the positioning screw is sleeved with a buffer rubber column that is opposite to the two groups of circuit main boards adjacent to each other, and the outer side of the arm of the positioning screw is screwed with a tightening nut that is opposite to the bottom of the circuit main board.

[0008] As a further solution of the utility model: the board surface of the circuit main board is provided with an assembly jack matched with the positioning screw at the corner end.

[0009] As a further solution of the utility model: the back plate of the heat dissipation plate frame is symmetrically provided with positioning holes adapted to two sets of screw rod assemblies at two ends.

[0010] As a further solution of the utility model: the buffer rubber column is made of natural rubber material, and the buffer rubber column and the positioning screw are slidably connected to each other.

[0011] As a further solution of the utility model: a plurality of groups of heat exhaust fans are arranged at equal intervals, and each group of heat exhaust fans is directly opposite to the upper and lower intervals of the plurality of groups of circuit mainboards.

[0012] As a further solution of the utility model: the dust cover is a HEPA filter, and the dust cover is fixed to the heat exhaust fan by bolts.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model arranges the circuit boards in order with upper and lower spacing by using screw assemblies, and can install the circuit boards separately, reserving a certain space for the circulation and heat dissipation of mechanical heat. At the same time, by assembling a heat dissipation plate frame on one side of the circuit board, and utilizing the heat dissipation fan and dust cover combination on the board surface, the mechanical heat generated by the circuit board can be autonomously blown away by wind, thereby improving the mechanical heat dissipation circulation efficiency and ensuring its long-term operation performance.

[0015] 2. When the utility model utilizes the screw assembly to arrange and install the circuit main board at upper and lower intervals, a buffer rubber column is sleeved on the outer side of the positioning screw to be directly opposite to the upper and lower circuit main boards, and when the knob of the tightening nut is tightened and positioned, on the one hand, the upper and lower adjacent circuit main boards can be elastically connected to improve their anti-seismic buffering performance, and on the other hand, it has good disassembly and assembly properties, which can facilitate subsequent disassembly and assembly maintenance and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a circuit board assembly suitable for a hydrogen fuel cell according to the utility model;

[0017] Figure 2 This is a plan view of a circuit board assembly suitable for a hydrogen fuel cell according to the utility model;

[0018] Figure 3 The utility model is a schematic diagram of the expanded structure of a circuit board assembly suitable for a hydrogen fuel cell.

[0019] In the figure: 1. Circuit board; 11. Assembly socket; 2. Screw assembly; 21. Positioning screw; 22. Buffer rubber column; 23. Tightening nut; 3. Heat sink frame; 4. Heat exhaust fan; 5. Positioning socket; 6. Dust cover. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Please refer to Figure 1-3 As shown, a circuit board assembly suitable for a hydrogen fuel cell comprises circuit boards 1 stacked on each other, the circuit boards 1 being arranged and fixed at equal intervals by screw assemblies 2 installed at the corner ends thereof, the screw assemblies 2 comprising positioning screws 21 symmetrically installed through the corner ends of the circuit boards 1, the outer side of the arm of the positioning screw 21 being sleeved with a buffering rubber column 22 corresponding to the two groups of circuit boards 1 adjacent to each other, the board surface of the circuit boards 1 being located at the corner ends and provided with an assembly socket 11 adapted to the positioning screw 21, when the circuit board assembly of the battery is assembled as a whole, the circuit boards 1 can be inserted and placed on the positioning screw 21 in sequence by utilizing the corresponding insertion of the assembly socket 11 and the positioning screw 21, and when the upper group of circuit boards 1 is installed, the corresponding buffering rubber column 22 is inserted and placed on the positioning screw 21, so that it serves as an elastic buffer component to provide elastic buffering support to the circuit boards 1 adjacent to each other above and below, and then installed in this way, the combination of the circuit boards 1 and the buffering rubber column 22 is assembled on the screw assembly 2 in a one-to-one corresponding manner.

[0024] The outer side of the arm of the positioning screw 21 is screwed with a tightening nut 23 that is opposite to the bottom of the circuit main board 1. A heat sink frame 3 is sleeved and fixed on one side of the arm of the screw assembly 2. The back plate of the heat sink frame 3 is symmetrically provided with positioning holes 5 that are compatible with two groups of screw assemblies 2 at both ends. When the circuit board assembly of the battery is assembled as a whole, after the circuit main board 1 is assembled, the heat sink frame 3 can be inserted and installed on the positioning screw 21 by using the corresponding insertion of the positioning hole 5 and the positioning screw 21, and then the tightening nut 23 and the knob of the positioning screw 21 are tightened to bolt the heat sink frame 3 and the circuit main board 1, so that the heat exhaust fan 4 and the circuit main board 1 are assembled as a whole on the screw assembly 2, and when disassembly and maintenance are required later, it only needs to unscrew the tightening nut 23 to disassemble and repair it as a whole, and the operation is simple and convenient.

[0025] The buffer rubber column 22 is made of natural rubber material, and the buffer rubber column 22 and the positioning screw 21 are slidably connected to each other. By arranging the buffer rubber column 22 between the upper and lower adjacent circuit main boards 1, the upper and lower adjacent circuit main boards 1 can maintain elastic connection, thereby improving their anti-seismic buffering performance.

[0026] The surface of the heat dissipation plate frame 3 is arranged with multiple groups of heat exhaust fans 4, and the multiple groups of heat exhaust fans 4 are arranged at equal intervals, and each group of heat exhaust fans 4 is directly opposite to the upper and lower intervals of the multiple groups of circuit main boards 1. During the operation of the battery circuit board, the interval between the upper and lower circuit main boards 1 can be used as a mechanical heat circulation space for the circuit board to improve its heat dissipation efficiency. At the same time, under the wind blowing of the heat exhaust fans 4, the external cold air can be circulated and blown between the intervals of the circuit main boards 1, which on the one hand takes away its mechanical heat, and on the other hand plays a role in air cooling to ensure the long service life of the circuit board components.

[0027] The air inlet of the heat exhaust fan 4 is equipped with a dust cover 6, which is a HEPA filter, and the dust cover 6 is fixed to the heat exhaust fan 4 by bolts. By arranging the dust cover 6 on the heat exhaust fan 4, the circulating cold air can be dust-removed and filtered to prevent dust from adhering to the circuit main board 1 under the influence of wind.

[0028] The working principle of the utility model is as follows: when the circuit board assembly of the battery is assembled as a whole, the circuit main board 1 can be inserted into the positioning screw 21 in sequence by using the corresponding insertion of the assembly socket 11 and the positioning screw 21. When the upper group of circuit main boards 1 is installed, the corresponding buffering rubber column 22 is inserted into the positioning screw 21, so that it can be used as an elastic buffer component to elastically buffer the upper and lower adjacent circuit main boards 1. Then, in this way, the combination of the circuit main board 1 and the buffering rubber column 22 is assembled on the screw assembly 2. When the circuit main board 1 is assembled, the positioning socket 5 can be used to correspond to the insertion of the positioning screw 21 to insert the heat sink frame 3. The heat dissipation fan 4 and the circuit board 1 are integrally assembled on the screw assembly 2 to complete the assembly and fixing of the circuit board assembly. Furthermore, in the subsequent operation of the battery circuit board, the gap between the upper and lower parts of the circuit board 1 can be used as a mechanical heat circulation space for the circuit board. At the same time, under the wind blowing of the heat dissipation fan 4, the external cold air can be circulated and blown between the gaps of the circuit board 1 to take away its mechanical heat. At the same time, air cooling is performed to perform timely and efficient heat dissipation and cooling of the circuit board assembly.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A circuit board assembly suitable for use in a hydrogen fuel cell, characterized in that: It comprises circuit main boards (1) stacked on top of each other, the circuit main boards (1) being arranged and fixed at equal intervals by screw rod assemblies (2) installed at their corner ends, and a heat sink frame (3) is sleeved and fixed on one side of the arm of the screw rod assembly (2), the heat sink frame (3) is provided with a plurality of groups of heat exhaust fans (4) arranged on the board surface, and a dust cover (6) is installed at the air inlet of the heat exhaust fan (4); The screw assembly (2) comprises a positioning screw (21) symmetrically installed through the corner end of the circuit main board (1), the outer side of the arm of the positioning screw (21) is sleeved with a buffer rubber column (22) facing the two sets of circuit main boards (1) adjacent to each other, and the outer side of the arm of the positioning screw (21) is screwed with a tightening nut (23) facing the bottom of the circuit main board (1).

2. A circuit board assembly suitable for use in a hydrogen fuel cell according to claim 1, characterized in that: The circuit main board (1) is provided with an assembly socket (11) at a corner end thereof and adapted to fit the positioning screw (21).

3. A circuit board assembly suitable for a hydrogen fuel cell according to claim 1, characterized in that: Positioning holes (5) adapted to two sets of screw rod assemblies (2) are symmetrically provided at two ends of the back plate of the heat dissipation plate frame (3).

4. A circuit board assembly suitable for use in a hydrogen fuel cell according to claim 1, characterized in that: The buffer rubber column (22) is made of natural rubber, and the buffer rubber column (22) and the positioning screw rod (21) are slidably connected to each other.

5. A circuit board assembly suitable for a hydrogen fuel cell according to claim 1, characterized in that: The plurality of groups of heat exhaust fans (4) are arranged at equal intervals, and each group of heat exhaust fans (4) is located directly between the upper and lower intervals of the plurality of groups of circuit main boards (1).

6. A circuit board assembly suitable for a hydrogen fuel cell according to claim 1, characterized in that: The dust cover (6) is a HEPA filter, and the dust cover (6) and the heat exhaust fan (4) are screwed and fixed by bolts.

Images