Large capacitor fixing device on circuit board

Abstract

The utility model discloses a large capacitor fixing device on a circuit board, relates to the technical field of battery packs, and solves the problem that poor contact is easily caused at the joint of a capacitor and the circuit board due to shaking of the capacitor. The capacitor fixing device comprises a fixing base, one side of the fixing base protrudes outwards along the edge to form a first positioning area used for positioning a circuit board, the top of the fixing base is provided with a fixing mechanism used for fixing a capacitor on the circuit board, and the fixing mechanism comprises two clamping pieces used for clamping the capacitor. And an accommodating area for accommodating a capacitor is formed between the two clamping pieces. According to the utility model, the circuit board is positioned and fixed in the first positioning area on one side of the fixed seat, the edge of the circuit board is positioned through the bulge, and the large capacitor positioned on the back surface of the circuit board is clamped and positioned through the two clamping pieces, so that the large capacitor is prevented from shaking up and down due to external force to influence the connection between the large capacitor and the circuit board; the condition of poor contact is prevented, and normal and stable work of the large capacitor and the circuit board is ensured.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, and in particular to a large capacitor fixing device on a circuit board. Background Technology

[0002] The battery pack consists of multiple cells connected in series and parallel. Several cells are placed inside the battery system housing and then connected in series and parallel via wires. A circuit board is installed inside the battery system housing; its main functions include managing the battery charging and discharging process, monitoring battery status, and protecting battery safety. A large capacitor is located on the back of the circuit board. This large capacitor is soldered to and electrically connected to the circuit board.

[0003] Because the circuit board is directly fixed to the battery system housing with screws, there is no limiting structure to constrain the capacitors on the circuit board. This battery pack can serve as, but is not limited to, a starting power source for automobiles. In operating scenarios, such as during prolonged bumpy driving, the capacitors can move up and down relative to the circuit board, easily causing the connection points between the capacitors and the circuit board to break or become unstable. This poor contact affects the normal operation of the capacitors and significantly impacts the function of the circuit board, potentially preventing the powered device, such as the car, from starting properly. Utility Model Content

[0004] The purpose of this invention is to solve the above-mentioned problems by designing a large capacitor fixing device on a circuit board, which solves the problem that poor contact is easily caused by capacitor shaking at the connection between the capacitor and the circuit board.

[0005] To achieve the above objectives, the technical solution of this utility model is a large capacitor fixing device on a circuit board, including a fixing base. One side of the fixing base protrudes outward along the edge to form a first positioning area for positioning the circuit board. The top of the fixing base has a fixing mechanism for fixing the capacitor on the circuit board. The fixing mechanism includes two clamping pieces for clamping the capacitor, and a receiving area for accommodating the capacitor is formed between the two clamping pieces.

[0006] Preferably, the top of the fixing seat is formed with a positioning part, and the positioning part has a groove for positioning the conductive plate.

[0007] Preferably, the groove is provided with reinforcing ribs and support columns, and the support columns have threaded holes.

[0008] Preferably, the fixing base has a positioning groove formed between the two clamping pieces for positioning the capacitor, and the opposite sides of the two clamping pieces can be attached to the surface of the capacitor.

[0009] Preferably, the positioning part is disposed on one side of the fixing mechanism, and a second positioning area for positioning the busbar is formed on the fixing seat on the other side of the fixing mechanism.

[0010] Preferably, the fixing base has outwardly protruding blocking portions on the adjacent sides of the second positioning area for positioning the two side edges of the busbar.

[0011] Preferably, the bottom of the fixing base is formed with a limiting member for limiting the position of the battery cell, and the bottom surface of the limiting member has a limiting groove.

[0012] Its advantages over existing technologies are:

[0013] In this utility model, the circuit board is positioned and fixed in the first positioning area on one side of the fixing base, and the edge of the circuit board is positioned by the protrusion. The large capacitor located on the back of the circuit board is clamped and positioned by two clips to prevent the large capacitor from shaking up and down due to external force, which would affect the connection between the large capacitor and the circuit board, prevent poor contact, and ensure that the large capacitor and the circuit board work normally and stably. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the installation structure of the large capacitor fixing device on the circuit board in this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the large capacitor fixing device on the circuit board in this utility model when it is combined with the circuit board;

[0016] Figure 3 This is a structural diagram of the fixed base;

[0017] Figure 4 This is a schematic diagram of the bottom structure of the mounting base.

[0018] In the figure, 1 is the fixed base; 11 is the positioning part; 111 is the groove; 112 is the reinforcing rib; 113 is the support column; 1131 is the threaded hole; 12 is the fixing mechanism; 121 is the clamping piece; 13 is the limiting part; 101 is the first positioning area; 102 is the second positioning area; 1021 is the blocking part; 103 is the positioning groove; 2 is the circuit board; 21 is the large capacitor; 3 is the current input conductive plate; 4 is the current output conductive plate; and 5 is the busbar. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0020] like Figure 1 As shown, this embodiment proposes a large capacitor fixing device on a circuit board. The fixing device mainly includes a fixing base 1, which is used to position the circuit board 2, the conductive plate connected to the circuit board 2 and the battery cell and the busbar 5, and to limit and fix the large capacitor 21 on the circuit board 2.

[0021] Two conductive plates are mounted on the circuit board 2, namely the current input conductive plate 3 and the current output conductive plate 4, which are electrically connected to the circuit board 2.

[0022] like Figure 2 , Figure 3 As shown, a first positioning area 101 is formed by protruding outward along the edge on one side of the fixing base 1. The circuit board 2 is installed in the first positioning area 101, and the protrusion on the edge of the fixing base 1 can position the circuit board 2. At the same time, it can also position the current input conductive plate 3 and the current output conductive plate 4 on the circuit board 2.

[0023] A positioning part 11 is formed on the top right side of the fixing base 1, and this positioning part 11 is integrally formed with the body of the fixing base 1. A rectangular groove 111 is formed on the positioning part 11, and a reinforcing rib 112 and a support column 113 are provided in the groove 111. The reinforcing rib 112 is used to strengthen the structural strength of the inner wall of the groove 111. There are three support columns 113, which are located at the three corners of the groove 111. A threaded hole 1131 is formed on each support column 113. After one end of the current output conductive plate 4 is bent at 90°, it will be embedded into the groove 111 on the positioning part 11, and then fixed by screws engaging with the threaded holes 1131 on the support columns 113. The groove 111 can position the bent end of the current output conductive plate 4. The support column 113 and the reinforcing rib 112 can also support the bent end of the current output conductive plate 4.

[0024] refer to Figure 3 A second positioning region 102 is formed on the top of the fixing base 1 on the side away from the positioning part 11. The second positioning region 102 is used to position the busbar 5, which will be connected to the positive or negative terminal of the battery cell. A blocking part 1021 is formed by protruding upward along the edges of the adjacent two sides of the second positioning region 102, which is used to block and position the two sides of the busbar 5.

[0025] See also Figure 3 A fixing mechanism 12 is provided on the fixing base 1 between the second positioning area 102 and the positioning part 11. The fixing mechanism 12 is used to fix the large capacitor 21 on the circuit board 2. The large capacitor 21 is soldered to the back of the circuit board 2 (that is, the side away from the current input conductive plate 3 and the current output conductive plate 4).

[0026] The fixing mechanism 12 consists of two clamping plates 121, which have identical structures and are symmetrically distributed from left to right. The large capacitor 21 is cylindrical, and the two clamping plates 121 are similar in shape to arcs and have a certain degree of elasticity. The curvature of the clamping plates 121 is adapted to the shape of the large capacitor 21. An appropriate gap is left between the two clamping plates 121 to form a receiving area for accommodating the large capacitor 21.

[0027] When the circuit board 2 is installed, the large capacitor 21 can pass between the two clips 121. Since the two clips 121 have a certain elasticity, they can be tightly attached to the surface of the large capacitor 21, clamping the large capacitor 21 to prevent it from shaking due to external force, ensuring the tightness of the solder joint between the large capacitor 21 and the circuit board 2, and preventing it from loosening.

[0028] In other technical solutions, the two clamping pieces 121 can also be integrated as one piece, with a positioning hole formed between the two clamping pieces 121. The diameter of the positioning hole is consistent with the diameter of the large capacitor 21, and the large capacitor 21 can be inserted into the positioning hole to position and fix the large capacitor 21.

[0029] like Figure 3 As shown, a positioning groove 103 with a certain curvature is also formed on the fixed base 1. The curvature is adapted to the shape of the large capacitor 21 and is used to position the large capacitor 21.

[0030] A rectangular through hole is provided in the middle of the positioning groove 103 so that the fixing seat 1 can be demolded during injection molding.

[0031] like Figure 4 As shown, three limiting members 13 are provided at the bottom of the fixing base 1, and the limiting members 13 are integrally injection molded with the fixing base 1. The three limiting members 13 are located at both ends and the middle part of the bottom of the fixing base 1, respectively, and are used to press and limit the cells in the battery pack. Each limiting member 13 has a limiting groove formed at its bottom, which is arc-shaped and used to limit the cells.

[0032] The mounting bracket 1 is installed inside the battery pack, located at the top of the battery cell. In this way, the limiting member 13 at the bottom of the mounting bracket 1 can press the battery cell tightly to prevent it from shaking.

[0033] The above technical solution only embodies the preferred technical solution of this utility model. Any changes that may be made by those skilled in the art to certain parts of it embody the principle of this utility model and fall within the protection scope of this utility model.

Claims

1. A large capacitor fixing device on a circuit board, characterized in that, The utility model relates to a fixing seat (1), one side of the fixing seat (1) is outwardly convex along the rim and is formed with the first positioning area (101) for positioning the circuit board (2), the top of the fixing seat (1) has the fixing mechanism (12) for fixing the capacitor on the circuit board (2), and the fixing mechanism (12) includes two clamping pieces (121) for capacitor clamping, and the clamping piece (121) is formed with the accommodation area for accommodating the capacitor between two clamping pieces (121).

2. The large-capacitance fixation device on a circuit board according to claim 1, wherein The top of the fixing seat (1) is formed with the positioning part (11), and the positioning part (11) has the groove (111) for positioning the conductive plate.

3. A large capacitor fixation device on a circuit board according to claim 2, wherein The groove (111) is provided with the reinforcing rib (112) and the support column (113), and the support column (113) has the threaded hole (1131).

4. The large capacitor fixation device on a circuit board according to claim 1, wherein The fixing seat (1) is formed with the positioning groove (103) for positioning the capacitor between two clamping pieces (121), and the opposite side of two clamping pieces (121) can be attached to the surface of the capacitor.

5. The large capacitor fixation means on a circuit board according to claim 2, wherein The positioning part (11) is arranged on one side of the fixing mechanism (12), and the other side of the fixing seat (1) is formed with the second positioning area (102) for positioning the bus plate (5).

6. A large capacitor fixation device on a circuit board according to claim 5, wherein The fixing seat (1) is outwardly convex on the adjacent two sides of the second positioning area (102) and is formed with the blocking part (1021) for positioning the two side edges of the bus plate (5).

7. The large capacitor fixation device on a circuit board according to claim 1, wherein The bottom of the fixing seat (1) is formed with the limiting piece (13) for limiting the electric core, and the bottom surface of the limiting piece (13) has the limiting groove.

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