Battery pack circuit board mounting structure

Abstract

The utility model discloses a battery pack circuit board mounting structure which comprises a battery body, a circuit board body and a connecting shell, a plurality of limiting shells are fixed at the top of the connecting shell, arc-shaped elastic pieces are arranged in the limiting shells, wedge-shaped blocks are connected to the surfaces of the arc-shaped elastic pieces in a sliding mode, and shell covers are detachably connected to the tops of the limiting shells. The surface of the circuit board body is provided with a limiting groove matched with the wedge block and the limiting shell for use, the top of the connecting shell is fixedly provided with a plurality of first elastic pieces, the surface of the circuit board body is provided with insertion grooves matched with the first elastic pieces for use, the top of the connecting shell is fixedly provided with a plurality of guide rods, and the guide rods are internally provided with through grooves; and a second elastic sheet is fixed on the inner wall of the guide rod. The utility model has the advantages that the assembly of the circuit board and the battery pack can be quickly completed without using bolts, and the connection strength of the circuit board and the battery pack can be increased, so that the circuit board is not easy to separate from the battery pack.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to a mounting structure for a circuit board of a battery pack. Background Art

[0002] In recent years, with the use of energy, the lithium battery industry in China has developed rapidly. The application fields of lithium batteries have been continuously expanded, and the demand has also been increasing. The related industries supporting it have also been continuously developing and growing. A battery pack refers to a rechargeable combined battery. Usually, a plurality of lithium batteries are assembled with a lithium battery bracket, and then the assembled lithium batteries and the circuit board are placed in a housing to form a module, which is then used as a power source.

[0003] After searching, a Chinese patent with the publication number of CN202695668U discloses a mounting structure for a circuit board of a battery pack.

[0004] The utility model includes a base placed on the ground, an upper cover fixedly connected to the base, and a battery assembly installed between the upper cover and the base. A cavity for installing the battery assembly is provided on the base, and a circuit board is provided on the battery assembly. A clamping member for fixing the circuit board is provided on the battery assembly. The clamping member includes a fixed block, a connecting column, and an elastic clamping piece. The fixed block is fixedly connected to one side of the battery assembly close to the circuit board. The connecting column is provided on one side of the fixed block close to the circuit board and extends towards the circuit board. The elastic clamping piece is provided at one end of the connecting column away from the fixed block and is inclined from the circuit board to the direction of the fixed block. Insertion holes for inserting the connecting columns and corresponding to the connecting columns one by one are provided on the circuit board. The utility model has the effect of more convenient and rapid installation of the circuit board.

[0005] However, the patent still has the following problems: Although the device can realize the installation of the circuit board and the battery pack without using bolts, the fixing structure of the device for the circuit board mainly relies on the elastic clamping piece and the limiting block. In this way, the limiting effect on the circuit board is not good. When the battery pack shakes up and down during use, the circuit board is likely to be separated from the battery pack, which is difficult to meet the use requirements. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a mounting structure for a circuit board of a battery pack, which has the advantages of being able to quickly complete the assembly of the circuit board and the battery pack without using bolts, and being able to increase the connection strength between the two, so that the circuit board is not easily separated from the battery pack.

[0007] To achieve the above object, the present utility model provides the following technical solutions: A battery pack circuit board mounting structure, including a battery body, a circuit board body, and a connection shell. A plurality of limiting shells are fixed on the top of the connection shell. An arc-shaped elastic piece is arranged inside the limiting shell. A wedge-shaped block is slidably connected to the surface of the arc-shaped elastic piece. A shell cover is detachably connected to the top of the limiting shell. Limiting grooves for cooperating with the wedge-shaped block and the limiting shell are provided on the surface of the circuit board body. A plurality of first elastic pieces are fixed on the top of the connection shell. Slots for cooperating with the first elastic pieces are provided on the surface of the circuit board body. A plurality of guide rods are fixed on the top of the connection shell. A through groove is provided inside the guide rod. A second elastic piece is fixed on the inner wall of the guide rod. A through groove for cooperating with the guide rod is provided on the surface of the circuit board body. A storage groove is provided on the surface of the connection shell. A slider is slidably connected to the inner wall of the storage groove. An L-shaped plate is fixed on the top of the slider.

[0008] As a preferred embodiment of the battery pack circuit board mounting structure of the present utility model, a plurality of clamping rods are fixed on the top of the connection shell. A plurality of clamping grooves for cooperating with the clamping rods are provided on the surface of the circuit board body.

[0009] As a preferred embodiment of the battery pack circuit board mounting structure of the present utility model, the top of the guide rod is arranged in a semi-circular structure, and the height of the top of the guide rod is higher than that of the clamping rod and the shell cover.

[0010] As a preferred embodiment of the battery pack circuit board mounting structure of the present utility model, a limiting plate is fixed on the inner wall of the limiting shell. The arc-shaped elastic piece is slidably connected to the inner wall of the limiting plate.

[0011] As a preferred embodiment of the battery pack circuit board mounting structure of the present utility model, two third elastic pieces are fixed on the inner wall of the limiting shell. The third elastic piece penetrates the limiting shell, and a storage groove is provided on the surface of the limiting shell.

[0012] As a preferred embodiment of the battery pack circuit board mounting structure of the present utility model, a limiting block is fixed on the surface of the wedge-shaped block. The limiting block is slidably connected to the inner wall of the limiting shell.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] In the present utility model, when the battery pack composed of the battery body and the connection shell needs to be installed on the circuit board body, the circuit board body is moved downward. At this time, the bottom of the circuit board body will contact the inclined surface of the surface of the wedge block, enabling the wedge block to enter the inside of the limiting shell and causing the arc-shaped elastic piece to be compressed and deformed under force. As a result, the shell cover and the limiting shell can pass through the limiting slot. At the same time, the first elastic piece will also contract and deform, enabling the first elastic piece to pass through the slot, and the guide rod will also enter the through slot. During this period, the second elastic piece will also deform, causing the second elastic piece to enter the inside of the guide rod. When the circuit board body is placed on the top of the connection shell, the arc-shaped elastic piece will reset through its own material, causing the surface of the wedge block to pop out of the limiting shell. At the same time, the first elastic piece and the second elastic piece will also rebound and reset, enabling the bottom surfaces of the wedge block, the first elastic piece, and the second elastic piece to all contact the top of the circuit board body, thereby enabling the circuit board body to obtain upper and lower limiting effects. At the same time, the two L-shaped plates are moved toward each other, causing the slider to enter the storage slot and enabling the lower part of the surface of the L-shaped plate to contact the top of the circuit board body, thereby further improving the limiting effect on the circuit board body, so as to ensure that when the battery pack as a whole encounters up and down vibrations, the circuit board body will not separate from the battery pack. Description of the Drawings

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 is a partial structural schematic diagram of the present utility model;

[0017] Figure 3 is a partial structural schematic diagram of the present utility model;

[0018] Figure 4 is a partial structural schematic diagram of the present utility model;

[0019] Figure 5 is a partial disassembled structural schematic diagram of the present utility model;

[0020] Figure 6 is a partial sectional structural schematic diagram of the present utility model.

[0021] In the figure: 1. Battery body; 2. Circuit board body; 3. Connection shell; 4. Limiting shell; 5. Arc-shaped elastic piece; 6. Wedge block; 7. Shell cover; 8. Limiting slot; 9. First elastic piece; 10. Slot; 11. Guide rod; 12. Through slot; 13. Second elastic piece; 14. Slider; 15. L-shaped plate; 16. Clamping rod; 17. Clamping slot; 18. Limiting plate; 19. Limiting block; 20. Third elastic piece; 21. Storage slot. Detailed Embodiment

[0022] Please refer to Figure 1-6, a battery pack circuit board mounting structure, including a battery body 1, a circuit board body 2 and a connecting shell 3. A plurality of limiting shells 4 are fixed on the top of the connecting shell 3. An arc-shaped elastic sheet 5 is arranged inside the limiting shell 4. A wedge-shaped block 6 is slidably connected to the surface of the arc-shaped elastic sheet 5. The top of the limiting shell 4 is detachably connected with a shell cover 7. A limiting groove 8 for cooperating with the wedge-shaped block 6 and the limiting shell 4 is formed on the surface of the circuit board body 2. A plurality of first elastic sheets 9 are fixed on the top of the connecting shell 3. A slot 10 for cooperating with the first elastic sheet 9 is formed on the surface of the circuit board body 2. A plurality of guide rods 11 are fixed on the top of the connecting shell 3. A through groove 12 is formed inside the guide rod 11. A second elastic sheet 13 is fixed on the inner wall of the guide rod 11. A through groove 12 for cooperating with the guide rod 11 is formed on the surface of the circuit board body 2. A storage groove is formed on the surface of the connecting shell 3. A slider 14 is slidably connected to the inner wall of the storage groove. An L-shaped plate 15 is fixed on the top of the slider 14;

[0023] When the battery pack as a whole composed of the battery body 1 and the connecting shell 3 needs to be installed with the circuit board body 2, move the circuit board body 2 downward. At this time, the bottom of the circuit board body 2 will contact the inclined surface of the surface of the wedge-shaped block 6, so that the wedge-shaped block 6 can enter the inside of the limiting shell 4, and the arc-shaped elastic sheet 5 is forced to be compressed and deformed, so that the shell cover 7 and the limiting shell 4 can pass through the limiting groove 8. At the same time, the first elastic sheet 9 will also contract and deform, so that the first elastic sheet 9 can also pass through the slot 10, and the guide rod 11 will also enter the through groove 12. During this period, the second elastic sheet 13 will also deform, so that the second elastic sheet 13 enters the inside of the guide rod 11. When the circuit board body 2 is placed on the top of the connecting shell 3, the arc-shaped elastic sheet 5 will reset through its own material, so that the surface of the wedge-shaped block 6 can pop out of the limiting shell 4. At the same time, the first elastic sheet 9 and the second elastic sheet 13 will also rebound and reset, so that the bottom surfaces of the wedge-shaped block 6, the first elastic sheet 9 and the second elastic sheet 13 can all contact the top of the circuit board body 2, so that the circuit board body 2 can obtain an up-and-down limiting effect. At the same time, move the two L-shaped plates 15 towards each other, so that the slider 14 enters the storage groove, and the lower part of the surface of the L-shaped plate 15 can contact the top of the circuit board body 2, so as to further improve the limiting effect on the circuit board body 2, so as to ensure that when the battery pack as a whole encounters up-and-down vibration, the circuit board body 2 will not be separated from the battery pack.

[0024] Furthermore, a plurality of clamping rods 16 are fixed on the top of the connecting shell 3. A plurality of clamping grooves 17 for cooperating with the clamping rods 16 are formed on the surface of the circuit board body 2;

[0025] When the circuit board body 2 is installed on the top of the connecting shell 3, the clamping rods 16 will enter the inside of the clamping grooves 17, so that the clamping rods 16 can further improve the limiting effect on the circuit board body 2 through friction.

[0026] Furthermore, the top of the guide rod 11 is arranged in a semi-circular structure, and the height of the top of the guide rod 11 is higher than that of the clamping rod 16 and the shell cover 7;

[0027] Setting the top of the guide rod 11 into a semi-circular shape enables the circuit board body 2 to move downward, and the circuit board body 2 can pass through the through slot 12 and the semi-circular structure at the top of the guide rod 11, making it easier for the circuit board body 2 to be placed on the top of the connection shell 3.

[0028] Furthermore, a limiting plate 18 is fixed to the inner wall of the limiting shell 4, and the arc-shaped elastic piece 5 is slidably connected to the inner wall of the limiting plate 18;

[0029] The limiting plate 18 can limit both sides of the arc-shaped elastic piece 5 to prevent the arc-shaped elastic piece 5 from detaching from the inside of the limiting shell 4.

[0030] Furthermore, two third elastic pieces 20 are fixed to the inner wall of the limiting shell 4. The third elastic pieces 20 penetrate through the limiting shell 4, and a receiving groove 21 is formed on the surface of the limiting shell 4;

[0031] When the shell cover 7 and the limiting shell 4 pass through the limiting groove 8, the third elastic pieces 20 will come into contact with the surface of the limiting groove 8, causing the third elastic pieces 20 to deform and enter the inside of the receiving groove 21. After the circuit board body 2 is installed on the top of the connection shell 3, the third elastic pieces 20 will be able to reset, so that the bottom of the third elastic pieces 20 can further limit the top of the circuit board body 2, thereby improving the limiting effect on the circuit board body 2.

[0032] Furthermore, a limiting block 19 is fixed to the surface of the wedge-shaped block 6, and the limiting block 19 is slidably connected to the inner wall of the limiting shell 4;

[0033] The limiting block 19 can slide inside the limiting shell 4 to prevent the wedge-shaped block 6 from detaching from the inside of the limiting shell 4.

[0034] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A battery pack circuit board mounting structure, comprising a battery body (1), a circuit board body (2) and a connecting shell (3), characterized in that: A plurality of limiting shells (4) are fixed on the top of the connection shell (3); an arc-shaped spring sheet (5) is arranged inside the limiting shell (4); a wedge-shaped block (6) is slidably connected to the surface of the arc-shaped spring sheet (5); a shell cover (7) is detachably connected to the top of the limiting shell (4); a limiting groove (8) for matching the wedge-shaped block (6) and the limiting shell (4) is provided on the surface of the circuit board body (2); a plurality of first elastic sheets (9) are fixed on the top of the connection shell (3); a first elastic sheet (9) is provided on the surface of the circuit board body (2) for matching the first elastic sheet (9); a first elastic sheet (9) is provided on the surface of the circuit board body (2 ... A slot (10) for use with the elastic sheet (9), a plurality of guide rods (11) are fixed on the top of the connecting shell (3), a through slot (12) is provided inside the guide rod (11), a second elastic sheet (13) is fixed to the inner wall of the guide rod (11), a through slot (12) for use with the guide rod (11) is provided on the surface of the circuit board body (2), a storage slot is provided on the surface of the connecting shell (3), a slider (14) is slidably connected to the inner wall of the storage slot, and an L-shaped plate (15) is fixed to the top of the slider (14).

2. A battery pack circuit board mounting structure according to claim 1, characterized in that: A plurality of clamping rods (16) are fixed on the top of the connection shell (3), and a plurality of clamping grooves (17) for matching with the clamping rods (16) are provided on the surface of the circuit board body (2).

3. A battery pack circuit board mounting structure according to claim 2, characterized in that: The top of the guide rod (11) is arranged in a semicircular structure, and the top of the guide rod (11) is higher than the clamping rod (16) and the shell cover (7).

4. A battery pack circuit board mounting structure according to claim 1, characterized in that: A limiting plate (18) is fixed to the inner wall of the limiting shell (4), and the arc-shaped spring piece (5) is slidably connected to the inner wall of the limiting plate (18).

5. The battery pack circuit board mounting structure according to claim 1, characterized in that: Two third elastic sheets (20) are fixed to the inner wall of the limiting shell (4), the third elastic sheets (20) penetrate the limiting shell (4), and a receiving groove (21) is provided on the surface of the limiting shell (4).

6. A battery pack circuit board mounting structure according to claim 1, characterized in that: A limiting block (19) is fixed on the surface of the wedge block (6), and the limiting block (19) is slidably connected to the inner wall of the limiting shell (4).

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