Electric tool battery pack and electric tool

Abstract

The utility model relates to the technical field of battery packs, and discloses an electric tool battery pack and an electric tool, an electric tool battery comprises an upper shell, a lower shell and a fixing assembly; the two sides of the upper shell are provided with two sets of symmetrically-distributed first open grooves. A fixing groove for clamping an electric tool is formed in the top end of the upper shell; the lower shell is arranged below the upper shell; the upper shell and the lower shell are connected in a buckled mode to form a containing cavity. A battery cell module is arranged in the placing cavity; the fixing assembly comprises a connecting block and two groups of pressing blocks; the two pressing blocks are symmetrically distributed in the center of the bottom end of the upper shell. The connecting block is arranged between the two groups of pressing blocks and is fixedly connected with the upper shell; the connecting block comprises a pressing part, a guide part and a clamping part; the pressing part is arranged in the open slot in a penetrating manner; the guiding parts are arranged in the center of the pressing part, and a spring is arranged between the two guiding parts. The clamping part is arranged on one side of the guiding part, and a second open groove is formed between the clamping part and the fixing groove.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to an electric tool battery pack and an electric tool. Background Art

[0002] Electric tools are widely loved by users because they can effectively reduce the labor intensity of workers and improve their work efficiency, and are widely used in fields such as construction, decoration, gardening, and household cleaning. For example, electric drills, electric saws, vacuum cleaners, lawn mowers, pruning machines, and so on.

[0003] In order to make the use range of electric tools not restricted by the mains power, electric tools are usually equipped with battery packs. The battery pack is usually fixed to the bottom end of the electric tool, and is connected to the connection port at the bottom end of the electric tool through the connection terminal of the battery pack to provide power for the electric tool. However, the connection stability between the existing battery pack and the electric tool is poor. When the electric tool works, it will generate vibration. After long-term work, the battery pack and the electric tool will become loose, resulting in poor contact, affecting the working stability of the electric tool. Moreover, when the battery pack is accidentally touched, it is easy to fall off the electric tool, affecting the normal operation of the electric tool.

[0004] Therefore, there is an urgent need for an electric tool battery pack and an electric tool to solve the above problems. Summary of the Utility Model

[0005] Based on the above, the purpose of the utility model is to provide an electric tool battery pack and an electric tool to solve the problems that the connection structure between the existing battery pack and the electric tool is simple, the electric tool will generate vibration during work, the battery pack and the electric tool will become loose resulting in poor contact, and the battery pack is easily dropped from the electric tool when accidentally touched.

[0006] To solve the above technical problems, the utility model adopts the following technical scheme:

[0007] An electric tool battery pack includes an upper shell, a lower shell and a fixing component; two groups of symmetrically distributed first slots are arranged on both sides of the upper shell; a fixing groove for clamping the electric tool is arranged at the top end of the upper shell; the lower shell is arranged below the upper shell; the upper shell and the lower shell are snap-connected to form a placement cavity; a battery cell module is arranged in the placement cavity; the fixing component includes a connecting block and two pressing blocks; the two pressing blocks are symmetrically distributed at the center of the bottom end of the upper shell; the connecting block is arranged between the two pressing blocks and is fixedly connected to the upper shell; the pressing block includes a pressing part, a guiding part and a clamping part; the pressing part passes through the first slot; the guiding part is arranged at the center of the pressing part, and a spring is arranged between the two guiding parts; the clamping part is arranged on one side of the guiding part, and a second slot is arranged between the clamping part and the fixing groove.

[0008] As a preferred embodiment of an electric tool battery pack, a third slot is provided in the center of the pressing portion; the guiding portion is located within the third slot; a guiding groove is provided between the guiding portion and the pressing portion.

[0009] As a preferred embodiment of an electric tool battery pack, a connecting portion protruding outward is provided at one end of the guiding portion close to the connecting block, and one end of the spring is connected to the connecting portion.

[0010] As a preferred embodiment of an electric tool battery pack, the clamping portion has an L-shaped structure; one end of the clamping portion is connected to the pressing portion, and the other end can enter or disengage from the second slot; an inclined surface is provided on the outer side of the other end of the clamping portion.

[0011] As a preferred embodiment of an electric tool battery pack, a first limiting groove recessed inward is provided on one side of the upper housing; a second limiting groove recessed inward is provided on one side of the lower housing; the first limiting groove and the second limiting groove are snap-connected to form a limiting portion for limiting the electric tool.

[0012] As a preferred embodiment of an electric tool battery pack, two groups of oppositely arranged limiting blocks are provided at the top end of the inner wall of the connecting block; a clamping groove corresponding to the clamping portion is provided at the bottom end of the upper housing.

[0013] As a preferred embodiment of an electric tool battery pack, heat dissipation grooves are provided on the upper housing; a waterproof sleeve is provided at the bottom end of the upper housing corresponding to the heat dissipation grooves, and a plurality of air-permeable holes are provided on the waterproof sleeve; a first water absorption layer is provided inside the waterproof sleeve, and the waterproof sleeve wraps around the bottom end of the heat dissipation grooves.

[0014] As a preferred embodiment of an electric tool battery pack, a plurality of heat dissipation holes are provided in the lower housing at equal intervals; a second water absorption layer is provided at the lower housing corresponding to the heat dissipation holes.

[0015] As a preferred embodiment of an electric tool battery pack, a buffer layer is provided at the bottom end of the placement cavity; the buffer layer is located above the second water absorption layer.

[0016] An electric tool includes the above-mentioned electric tool battery pack.

[0017] The beneficial effects of the present utility model are:

[0018] By setting the fixing component, during installation, the bottom end of the power tool is snapped into the fixing groove, and the power tool is completely snapped into the fixing groove. At this time, the clamping portion in the second slot of the upper housing extends outwards to lock the power tool, so that the battery pack can be stably installed at the bottom end of the power tool, avoiding affecting the normal use of the power tool due to the vibration or accidental touch of the power tool, improving the working efficiency of the power tool. At the same time, during disassembly, by pressing the pressing portions of the two pressing blocks, the guiding portions are driven to move relative to each other in the connecting block, so that the clamping portions on the two pressing blocks are disengaged from the lower end of the power tool, and the battery pack can be pulled out, simplifying the disassembly steps of the battery pack and facilitating the disassembly of the battery pack. Brief Description of the Drawings

[0019] Figure 1 is a schematic diagram of the overall structure of a battery pack for a power tool provided by the present utility model;

[0020] Figure 2 is a schematic diagram of the overall structure of the fixing component provided by the present utility model;

[0021] Figure 3 is a schematic diagram of the internal structure of the upper housing provided by the present utility model;

[0022] Figure 4 is Figure 3 an enlarged schematic diagram of A in

[0023] Figure 5 is a schematic diagram of the internal structure of the upper housing provided by the present utility model;

[0024] Figure 6 is Figure 5 an enlarged schematic diagram of B in

[0025] Among them, the reference numerals in the drawings are as follows:

[0026] 10. Upper housing; 101. First slot; 102. Fixing groove; 103. Second slot; 11. First limiting groove; 12. Clamping groove; 13. Heat dissipation groove; 14. Waterproof sleeve; 141. Ventilation hole; 15. First water absorption layer; 20. Lower housing; 21. Second limiting groove; 22. Heat dissipation hole; 23. Second water absorption layer; 24. Buffer layer; 30. Fixing component; 31. Connecting block; 311. Limiting block; 32. Pressing block; 33. Pressing portion; 34. Guiding portion; 341. Connecting portion; 35. Clamping portion; 36. Spring. Detailed Embodiment

[0027] The present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.

[0028] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below", "below", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0030] In the description of this embodiment, the orientation or positional relationship such as "above", "below", "left", and "right" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model.

[0031] In the description of the present utility model, unless otherwise stated, the meaning of "a plurality of" is two or more. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0032] In an embodiment of the present utility model, as Figures 1-6As shown in the figure, an electric tool battery pack is provided, which includes an upper housing 10, a lower housing 20 and a fixing component 30. Two groups of symmetrically distributed first slots 101 are provided on both sides of the upper housing 10. A fixing groove 102 for clamping the electric tool is provided at the top of the upper housing. The lower housing 20 is arranged below the upper housing 10. The upper housing 10 and the lower housing 20 are snap-connected to form a placement cavity. A battery cell module is arranged in the placement cavity. The fixing component 30 includes a connecting block 31 and two groups of pressing blocks 32. The two groups of pressing blocks 32 are symmetrically distributed at the center of the bottom end of the upper housing 10. The connecting block 31 is arranged between the two groups of pressing blocks 32 and is fixedly connected to the upper housing 10. The pressing block 32 includes a pressing portion 33, a guiding portion 34 and a clamping portion 35. The pressing portion 33 is arranged to pass through the first slot 101. The guiding portion 34 is arranged at the center of the pressing portion 33, and a spring 36 is arranged between the two groups of guiding portions 34. The clamping portion 35 is arranged on one side of the guiding portion 34, and a second slot 103 is arranged between the clamping portion 35 and the fixing groove 102.

[0033] In this embodiment, the guiding portion 34 is slidably connected to the connecting block 31. The connecting block 31 can enter or disengage from the guiding slot. A plurality of fixing feet are arranged between the connecting block 31 and the upper housing 10. The pressing block 32 is fixed through the fixing feet, so that the pressing block 32 can be stably installed in the upper housing 10, and the fixing feet can also play a role of limiting and guiding, avoiding the deviation of the pressing block 32 during movement and improving the moving stability of the pressing block 32.

[0034] The battery cell module includes a circuit board, a battery cell bracket and a metal connecting piece. The circuit board is arranged below the fixing mechanism, and a connecting terminal is arranged at one end of the circuit board. The battery cell bracket is arranged below the circuit board, and a plurality of placement slots for installing battery cells are arranged in the battery cell bracket. The metal connecting piece is arranged on the battery cell bracket and is connected to the circuit board. Under the action of the battery cell, the circuit board and the metal connecting piece, power is provided for the electric tool through the connecting terminal.

[0035] By setting the fixing component 30, during installation, the bottom end of the electric tool is clamped into the fixing groove 102, and the electric tool is completely clamped in the fixing groove 102. At this time, the clamping portion 35 in the second slot 103 of the upper housing 10 extends outwards to lock the electric tool, so that the battery pack can be stably installed at the bottom end of the electric tool, avoiding affecting the normal use of the electric tool due to the vibration or accidental touch of the electric tool, improving the working efficiency of the electric tool. At the same time, during disassembly, by pressing the pressing portions 33 of the two pressing blocks 32 at both ends, the guiding portions 34 are driven to move relatively in the connecting block 31, so that the clamping portions 35 on the two pressing blocks 32 at both ends are disengaged from the bottom end of the electric tool, and the battery pack can be pulled out, simplifying the disassembly steps of the battery pack and facilitating the disassembly of the battery pack.

[0036] Preferably, a third slot is provided at the center of the pressing portion 33. The guiding portion 34 is located within the third slot. A guiding groove is provided between the guiding portion 34 and the pressing portion 33. By providing the guiding groove, when the two pressing blocks 32 are pressed, the side wall of the connecting block 31 and the guiding groove move relative to each other, and the guiding groove plays a guiding role for the side wall, effectively preventing the pressing block 32 from shifting during movement, avoiding jamming during pressing, and improving the movement stability of the pressing block 32.

[0037] Furthermore, a connecting portion 341 protruding outward is provided at one end of the guiding portion 34 close to the connecting block 31, and one end of the spring 36 is connected to the connecting portion 341. By providing the connecting portion 341, one end of the spring 36 can be better sleeved between the two pressing blocks 32, preventing the spring 36 from loosening and improving the fixing effect of the spring 36.

[0038] Even further, the clamping portion 35 is in an L-shaped structure. One end of the clamping portion 35 is connected to the pressing portion 33, and the other end can enter or disengage from the second slot 103. An inclined surface is provided on the outer side of the other end of the clamping portion 35. By providing the inclined surface, when the power tool is fixed to the battery pack, the inclined surface plays a guiding role in clamping the power tool, enabling the power tool to move inward better and more easily enter the clamping groove 12 of the battery pack. At the same time, through the mutual deduction between the clamping portion 35 and the inside of the power tool, the battery pack is not easily detached or loosened from the power tool, improving the installation stability between the power tool and the battery pack.

[0039] Preferably, a first limiting groove 11 recessed inward is provided on one side of the upper housing 10. A second limiting groove 21 recessed inward is provided on one side of the lower housing 20. The first limiting groove 11 and the second limiting groove 21 are snap-connected to form a limiting portion for limiting the power tool. By providing the limiting portion, it plays a limiting role for the connecting end of the power tool, simplifies the fixing steps when connecting the battery pack and the power tool, and improves the installation efficiency.

[0040] Preferably, two sets of oppositely arranged limiting blocks 311 are provided at the top end of the inner wall of the connecting block 31. A clamping groove 12 corresponding to the clamping portion 35 is provided at the bottom end of the upper housing 10. By providing the limiting blocks 311 and the clamping groove 12, by clamping the limiting blocks 311 in the clamping groove 12, the connecting block 31 can be stably installed in the upper housing 10, not easily loosening or falling off. At the same time, the connecting block 31 plays a guiding role in the movement of the pressing block 32, enabling the pressing block 32 to move smoothly and smoothly during movement.

[0041] Preferably, heat dissipation grooves 13 are provided on the upper housing 10. A waterproof sleeve 14 is provided at the bottom end of the upper housing 10 corresponding to the heat dissipation grooves 13, and multiple groups of ventilation holes 141 are provided on the waterproof sleeve 14. A first water absorption layer 15 is provided inside the waterproof sleeve 14, and a water absorption desiccant is filled inside the first water absorption layer 15. The waterproof sleeve 14 wraps around the bottom end of the heat dissipation groove 13. By providing the waterproof sleeve 14 and the ventilation holes 141, the heat generated when the battery pack works is transferred from the ventilation holes 141 to the heat dissipation grooves 13, and then the heat is transferred to the outside by the heat dissipation grooves 13, so that the battery pack has a good heat dissipation effect. At the same time, by providing the first water absorption layer 15, the water seeping in from the heat dissipation grooves 13 from the outside is absorbed by the first water absorption layer 15, avoiding water entering the inside of the battery pack and causing damage to the internal components of the battery pack, and improving the service life of the battery pack.

[0042] Further, multiple groups of heat dissipation holes 22 are provided inside the lower housing 20 and are equally spaced. A second water absorption layer 23 is provided at the lower housing 20 corresponding to the heat dissipation holes 22, and a water absorption desiccant is filled inside the second water absorption layer 23. By providing the heat dissipation holes 22, the heat generated when the battery pack works is transferred to the outside through the heat dissipation holes 22, further improving the heat dissipation effect of the battery pack. At the same time, by providing the second water absorption layer 23, the water seeping in from the outside through the heat dissipation holes 22 is absorbed by the second water absorption layer 23, avoiding water entering the inside of the battery pack and causing damage to the internal components of the battery pack, and improving the service life of the battery pack.

[0043] Furthermore, a buffer layer 24 is provided at the bottom end of the placement cavity. The buffer layer 24 is a PC material molecular layer. The buffer layer 24 is located above the second water absorption layer 23. By providing the buffer layer 24, when the battery pack is subjected to a severe impact, the impact force between the battery module and the lower housing 20 is buffered by the buffer layer 24, reducing the impact force received by the battery module, reducing the loss of the battery module, and improving the service life of the battery module.

[0044] In an embodiment of the present invention, a power tool is provided, including the above-mentioned power tool battery pack. The structure of the power tool battery pack is as Figures 1-6 shown. The power tool battery pack is installed at the bottom end of the power tool and is fixed by the fixing component 30 of the power tool battery pack, so that the power tool battery pack can be stably installed at the bottom end of the power tool and is not easily detached.

[0045] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model is disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art, within the scope of the technical solution of the present utility model, when making some changes or modifications using the above-disclosed technical content into equivalent embodiments of equivalent changes, as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the present utility model all fall within the scope of the technical solution of the present utility model.

Claims

1. An electric tool battery pack, characterized in that, Comprising: An upper housing, on both sides of which there are two groups of symmetrically distributed first slots; at the top of the upper housing there is a fixing slot for clamping an electric tool; A lower housing, which is arranged below the upper housing; the upper housing and the lower housing are snap-connected to form a placement cavity; an electric core module is arranged in the placement cavity; A fixing component, which includes a connecting block and two pressing blocks; the two pressing blocks are symmetrically distributed at the center of the bottom end of the upper housing; the connecting block is arranged between the two pressing blocks and is fixedly connected to the upper housing; Wherein, the pressing block includes a pressing portion, a guiding portion and a clamping portion; the pressing portion penetrates through the first slot; the guiding portion is arranged at the center of the pressing portion, and a spring is arranged between the two guiding portions; the clamping portion is arranged on one side of the guiding portion, and there is a second slot between the clamping portion and the fixing slot.

2. The power tool battery pack according to claim 1, wherein There is a third slot at the center of the pressing portion; the guiding portion is located in the third slot; there is a guiding groove between the guiding portion and the pressing portion.

3. The power tool battery pack according to claim 2, characterized in that, One end of the guiding portion close to the connecting block is provided with an outwardly protruding connecting portion, and the connecting portion connects one end of the spring.

4. The power tool battery pack according to claim 3, wherein The clamping portion is in an L-shaped structure; one end of the clamping portion is connected to the pressing portion, and the other end can enter or disengage from the second slot; there is an inclined surface on the outer side of the other end of the clamping portion.

5. The power tool battery pack according to claim 1, characterized in that, One side of the upper housing is provided with an inwardly recessed first limiting slot; one side of the lower housing is provided with an inwardly recessed second limiting slot; the first limiting slot and the second limiting slot are snap-connected to form a limiting portion for limiting an electric tool.

6. The power tool battery pack according to claim 1, characterized in that, At the top end of the inner wall of the connecting block, there are two groups of oppositely arranged limiting blocks; at the bottom end of the upper housing, there is a clamping slot corresponding to the clamping portion.

7. The power tool battery pack according to claim 1, characterized in that, The upper housing is provided with heat dissipation slots; at the bottom end of the upper housing corresponding to the heat dissipation slots, there is a waterproof sleeve, and the waterproof sleeve is provided with a plurality of ventilation holes; a first water absorption layer is arranged in the waterproof sleeve, and the waterproof sleeve wraps the bottom end of the heat dissipation slot.

8. The power tool battery pack according to claim 7, wherein, A plurality of equally spaced heat dissipation holes are arranged in the lower housing; a second water absorption layer is arranged in the lower housing corresponding to the heat dissipation holes.

9. The power tool battery pack according to claim 8, wherein, A buffer layer is arranged at the bottom end of the placement cavity; the buffer layer is located above the second water absorption layer.

10. An electric tool, characterized in that, Including the electric tool battery pack according to any one of claims 1 to 9.

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