Battery pack

Abstract

The utility model belongs to the technical field of battery packs, and particularly relates to a battery pack which comprises an outer shell, a battery pack is arranged in the outer shell, the outer shell comprises a first shell body and a second shell body which are detachably arranged, an installation cavity is formed between the first shell body and the second shell body, and the battery pack is arranged in the installation cavity. An elastic piece and two groups of clamping buttons are also arranged in the mounting cavity; a connecting protrusion is arranged on one side of the mounting cavity, connecting grooves are formed in the two sides of the connecting protrusion, first guide grooves are formed in the bottoms of the connecting grooves, a button part and a clamping hook part are arranged on the clamping button, and control ports are formed in the two sides of the shell. The button part penetrates out of the control opening and is exposed outside, the elastic piece drives the clamping button to reset, and the clamping hook part penetrates into the connecting groove through the first guide groove.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery packs, and particularly relates to a battery pack. Background Art

[0002] The battery pack is a commonly used power source for power tools. It is detachably connected to the power tool, making it convenient for users to replace the battery pack and quickly replenish the power of the power tool.

[0003] Common battery packs on the market are fixed on power tools through a snap-on structure, such as a power tool battery pack disclosed in Chinese utility model patent application CN202320950509.7, which includes a bottom shell and a top cover, the bottom shell and the top cover are combined to form a accommodating chamber, a cell group is arranged inside the accommodating chamber, a button and a lock are arranged at one end of the top cover, a connecting rib is arranged between the button and the lock, a plurality of sinking grooves are opened in the middle of the lock, a plurality of upwardly protruding inverted columns are arranged inside the sinking groove, the bottom end of the inverted column is rotatably connected to the inside of the sinking groove, the top end of the inverted column is an inclined platform inclined toward the side away from the button, the inclined platform is pushed toward the button side, so that the inclined platform can be rotatably embedded in the inside of the sinking groove, the inverted column and the sinking groove are rotatably connected, and have the characteristic of small friction, so that when the battery pack is horizontally plugged into the power tool, the inverted column conflicts with the power tool, and the top of the inverted column is flipped to the inside of the sinking groove, which is convenient for plugging and assembling the power tool and the battery pack.

[0004] The above structure is complex and inconvenient to produce and install, and during use, the user needs to pinch the upper and lower sides of the battery pack to control the displacement of the button and the lock, and then disassemble and install the battery pack. However, due to the heavy weight of the battery pack, the battery pack often falls accidentally during installation and disassembly, or the user needs to place the battery pack on a desktop for disassembly, which is inconvenient to install and disassemble the battery pack. Summary of the invention

[0005] In order to overcome the defects in the prior art, the purpose of the present invention is to provide a battery pack with a simple structure and convenient disassembly and installation.

[0006] The purpose of the utility model is achieved in this way:

[0007] A battery pack comprises a shell, a battery pack is arranged in the shell, the shell comprises a first shell and a second shell which are detachably arranged, an installation cavity is formed between the first shell and the second shell, the battery pack is arranged in the installation cavity, and an elastic member and two groups of snap-on buttons are also arranged in the installation cavity;

[0008] A connecting protrusion is provided on one side of the installation cavity, connecting grooves are provided on both sides of the connecting protrusion, a first guide groove is provided at the bottom of the connecting groove, a button part and a hook part are provided on the snap-on button, and control ports are provided on both sides of the shell; the button part passes through the control port and is exposed to the outside, the elastic member drives the snap-on button to reset, and allows the hook part to pass through the first guide groove and pass into the connecting groove.

[0009] The utility model is further configured as follows: the first guide groove extends toward the side wall of the connecting groove to form a second guide groove, and the second guide groove is adapted to the hook portion; when the hook portion penetrates into the connecting groove, the side surface of the hook portion penetrates into the second guide groove.

[0010] The utility model is further configured as follows: a mounting seat is detachably provided on the shell, a guide hole is provided on the mounting seat, and a guide rod adapted to the guide hole is provided on the snap-on button.

[0011] The utility model is further configured as follows: the elastic member is a compression spring, the compression spring is sleeved on the guide rod, one end of the elastic member abuts against the clamping button, and the other end of the elastic member abuts against the mounting seat.

[0012] The utility model is further configured as follows: a mounting groove is provided on the second shell, both ends of the mounting groove extend to the control ports on both sides of the shell respectively, the mounting seat is detachably arranged in the mounting groove, and a positioning groove is provided on the side of the mounting groove, and a positioning protrusion adapted to the positioning groove is provided on the side of the mounting seat.

[0013] The utility model is further configured as follows: a limiting protrusion is provided on the snap-on button, a limiting groove matched with the limiting protrusion is provided on the first shell or the second shell, and during the movement of the snap-on button, the limiting protrusion slides relatively in the limiting groove.

[0014] The utility model is further configured as follows: the control port is arranged between the first shell and the second shell, the connecting protrusion is arranged on the first shell, the second shell extends toward the end of the connecting protrusion to form a clamping portion, and the clamping portion and the connecting protrusion are clamped with each other.

[0015] The utility model is further configured as follows: the control port is arranged between the pressing portion and the connecting protrusion, the snap-on button extends toward the battery pack, and one end of the snap-on button passing through the shell extends toward the battery pack, and a clearance portion corresponding to the battery pack is formed on the side of the snap-on button.

[0016] The utility model is further configured as follows: convex edges are formed on both sides of the connecting protrusion respectively, the connecting groove is formed on one side of the convex edge, and the thickness of the convex edge decreases as the distance from the pressing part increases.

[0017] The utility model is further configured as follows: a positioning groove is provided on the pressing part, a clamping protrusion is provided in the positioning groove, a positioning part adapted to the positioning groove is provided on the connecting protrusion, and a clamping groove adapted to the clamping protrusion is provided on the positioning part.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] 1. The utility model has a simple structure and is convenient for users to control. Since there are user snap-in buttons on both sides of the shell, the user presses the snap-in buttons with two fingers during use to control the snap-in part to disengage from the power tool, thereby realizing the relative disassembly of the battery pack and the power tool. During this process, the end of the battery pack away from the user's fingers can swing downward, and the battery pack can be prevented from accidentally falling from the user's hand, which facilitates the disassembly and installation of the battery pack.

[0020] 2. The setting of the second guide groove in the utility model can protect the hook part, avoid bending and damage of the hook part during use, which is beneficial to prolong the service life of the battery pack; the setting of the limiting protrusion and the limiting groove can limit the movement range of the card button, which is convenient for users to use and control.

[0021] 3. The setting of the mounting seat in the utility model facilitates the installation of the snap-in button. The manufacturer can first connect the snap-in button to the mounting seat, and then control the snap-in button and the connecting seat to connect with the shell. The movement range of the snap-in button is limited by the mounting seat and the shell, which is convenient for the stable installation of the snap-in button, and the setting of the guide rod and the guide hole facilitates the stable movement of the snap-in button; the elastic member sleeved on the guide rod facilitates the stable installation of the elastic member and avoids bending of the elastic member during use; the setting of the mounting groove and the positioning groove facilitates the rapid positioning and installation of the mounting seat, and the structure facilitates the manufacturer to flexibly adjust the length of the mounting seat or the guide rod according to needs, so that the mounting seat and the snap-in button are suitable for battery packs of different specifications.

[0022] 4. In the utility model, the control port arranged between the first shell and the second shell facilitates the installation of the snap-on button. The arrangement of the clamping portion can support the connecting protrusion and improve the structural strength of the shell. The clamping portion and the connecting protrusion that are clamped to each other facilitate the tight installation of the first shell and the second shell, and prevent debris from entering the installation cavity through the gap between the first shell and the second shell. The air avoidance portion and the control port arranged between the clamping portion and the connecting protrusion facilitate the snap-on button to be away from the battery pack, thereby avoiding interference between the snap-on button and the battery pack and reducing the volume of the battery pack.

[0023] 5. The convex edge of the utility model whose thickness decreases as the distance from the clamping portion increases is convenient for reducing the friction between the battery pack and the power tool during disassembly and installation, and is convenient for disassembly and installation of the battery pack and the power tool. The structure is convenient for close installation of the battery pack and the power tool, avoiding shaking of the battery pack and the power tool during use; the positioning groove, the positioning portion, the snap-fitting protrusion and the snap-fitting groove facilitate the stable installation of the first shell and the second shell, avoiding damage due to excessive force on the snap-fitting protrusion and the snap-fitting groove during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a partial structural schematic diagram of the use state diagram of the utility model;

[0025] Figure 2 It is a partial structural diagram of the electric tool;

[0026] Figure 3 It is a structural schematic diagram of the utility model;

[0027] Figure 4 It is an explosion schematic diagram of the utility model;

[0028] Figure 5 It is one of the structural schematic diagrams of the first shell in the utility model;

[0029] Figure 6 This is the second structural schematic diagram of the first housing in the utility model;

[0030] Figure 7 It is one of the structural schematic diagrams of the second housing in the utility model;

[0031] Figure 8 This is the second structural schematic diagram of the second housing in the utility model;

[0032] Fig. 9 It is a structural schematic diagram of the clamping button in the utility model;

[0033] Fig.10 It is a structural schematic diagram of the mounting seat in the utility model.

[0034] Meanings of the reference numerals in the figure: 1-power tool; 11-fixing groove; 12-card slot; 2-housing; 21-first housing; 22-second housing; 23-installation cavity; 24-notch; 25-recess; 26-fastener; 211-connecting protrusion; 212-connecting groove; 213-first guide groove; 214-second guide groove; 215-convex edge; 216-positioning portion;

[0035] 217-clip slot; 221-limiting slot; 222-installation slot; 223-positioning slot; 224-positioning groove;

[0036] 225-clamping protrusion; 226-pressing portion; 3-clamping button; 31-hook portion; 32-guide rod;

[0037] 33-limiting protrusion; 34-button part; 35-control groove; 36-air-avoiding part; 4-mounting seat; 41-guide hole; 42-receiving groove; 43-positioning protrusion; 5-elastic member; 6-battery pack. DETAILED DESCRIPTION

[0038] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments:

[0039] See also Figures 1 to 10 As shown, a battery pack includes a shell 2, in which a battery pack 6 is arranged, the shell 2 includes a first shell 21 and a second shell 22 that are detachably arranged, a mounting cavity 23 is formed between the first shell 21 and the second shell 22, the battery pack 6 is arranged in the mounting cavity 23, and an elastic member 5 and two groups of snap-on buttons 3 are also arranged in the mounting cavity 23; a connecting protrusion 211 is arranged on one side of the mounting cavity 23, connecting grooves 212 are arranged on both sides of the connecting protrusion 211, a first guide groove 213 is arranged at the bottom of the connecting groove 212, a button portion 34 and a hook portion 31 are arranged on the snap-on button 3, and both sides of the shell 2 are provided A control port is provided; the button portion 34 passes through the control port and is exposed to the outside, the elastic member 5 drives the snap-on button 3 to reset, and allows the snap-on portion 31 to pass through the first guide slot 213 and into the connecting slot 212. The structure is simple and convenient for the user to control, and since the user snap-on buttons 3 are on both sides of the shell 2, the user presses the snap-on buttons 3 with two fingers during use to control the snap-on portion to disengage from the power tool 1, thereby realizing the relative disassembly of the battery pack and the power tool 1. During this process, the end of the battery pack away from the user's fingers can swing downward to prevent the battery pack from accidentally falling from the user's hand, thereby facilitating the disassembly and installation of the battery pack.

[0040] The electric tool 1 is provided with a fixing groove 11 adapted to the connecting protrusion 211. The cross-sections of the connecting protrusion 211 and the fixing groove 11 are both T-shaped. Both sides of the fixing groove 11 are provided with card slots 12 adapted to the hook portion 31, and the card button 3 is exposed outside the shell 2. A control groove 35 is provided. The user's fingers press the control grooves 35 on the card buttons 3 on both sides respectively, so as to prevent the battery pack from accidentally falling off during disassembly and installation.

[0041] In the present invention, it is preferred that the first guide groove 213 extends toward the side wall of the connecting groove 212 to form a second guide groove 214, and the second guide groove 214 is adapted to the hook portion 31; when the hook portion 31 penetrates into the connecting groove 212, the side of the hook portion 31 penetrates into the second guide groove 214. The setting of the second guide groove 214 can protect the hook portion 31, avoiding bending and damage of the hook portion 31 during use, which is beneficial to extending the service life of the battery pack.

[0042] A limiting protrusion 33 is provided on the snap-on button 3, and a limiting groove 221 adapted to the limiting protrusion 33 is provided on the first shell 21 or the second shell 22. During the movement of the snap-on button 3, the limiting protrusion 33 slides relatively in the limiting groove 221. The setting of the limiting protrusion 33 and the limiting groove 221 can limit the movement range of the snap-on button 3, avoid the snap-on button 3 from being separated from the control port, and facilitate the user to use the control. In this embodiment, the limiting groove 221 is set on the second shell 22.

[0043] The housing 2 described in the utility model is detachably provided with a mounting seat 4, the mounting seat 4 is provided with a guide hole 41, and the snap-in button 3 is provided with a guide rod 32 adapted to the guide hole 41. The setting of the mounting seat 4 is convenient for the installation of the snap-in button 3. The manufacturer can first connect the snap-in button 3 with the mounting seat 4, and then control the snap-in button 3 and the connecting seat to be connected with the housing 2. The movement range of the snap-in button 3 is limited by the mounting seat 4 and the housing 2, which is convenient for the stable installation of the snap-in button 3, and the setting of the guide rod 32 and the guide hole 41 is convenient for the stable movement of the snap-in button 3.

[0044] In this embodiment, the elastic member 5 is a compression spring, which is sleeved on the guide rod 32, and one end of the elastic member 5 abuts on the snap-on button 3, and the other end of the elastic member 5 abuts on the mounting seat 4. The elastic member 5 sleeved on the guide rod 32 facilitates the stable installation of the elastic member 5 and avoids bending of the elastic member 5 during use. A seating groove 42 is provided at the end of the guide hole 41, and one end of the elastic member 5 is inserted into the seating groove 42 and abuts on the mounting seat 4.

[0045] The second shell body 22 is provided with a mounting groove 222, and both ends of the mounting groove 222 extend to the control ports on both sides of the outer shell 2 respectively. The mounting seat 4 is detachably arranged in the mounting groove 222, and a positioning groove 223 is arranged on the side of the mounting groove 222. A positioning protrusion 43 adapted to the positioning groove 223 is arranged on the side of the mounting seat 4. The arrangement of the mounting groove 222 and the positioning groove 223 facilitates the rapid positioning and installation of the mounting seat 4, and this structure facilitates the manufacturer to flexibly adjust the length of the mounting seat 4 or the guide rod 32 as needed, so that the mounting seat 4 and the snap-on button 3 are suitable for battery packs of different specifications.

[0046] The control port described in the utility model is arranged between the first shell 21 and the second shell 22, the connecting protrusion 211 is arranged on the first shell 21, and the second shell 22 extends to the end of the connecting protrusion 211 to form a clamping portion 226, and the clamping portion 226 and the connecting protrusion 211 are mutually clamped. The control port arranged between the first shell 21 and the second shell 22 is convenient for the installation of the clamping button 3. The arrangement of the clamping portion 226 can support the connecting protrusion 211, improve the structural strength of the shell 2, and the clamping portion 226 and the connecting protrusion 211 that are clamped to each other facilitate the close installation of the first shell 21 and the second shell 22, thereby preventing debris from entering the installation cavity 23 through the gap between the first shell 21 and the second shell 22.

[0047] In this embodiment, notches 24 are respectively provided on the first shell 21 and the second shell 22 . When the first shell 21 and the second shell 22 are connected, the notches 24 are combined to form the control port.

[0048] The clamping portion 226 is provided with a positioning groove 224, and a snap-fitting protrusion 225 is provided in the positioning groove 224. The connecting protrusion 211 is provided with a positioning portion 216 adapted to the positioning groove 224, and the positioning portion 216 is provided with a snap-fitting groove 217 adapted to the snap-fitting protrusion 225. The positioning groove 224, the positioning portion 216, the snap-fitting protrusion 225 and the snap-fitting groove 217 facilitate the stable installation of the first shell 21 and the second shell 22, and avoid the snap-fitting protrusion 225 and the snap-fitting groove 217 being damaged due to excessive force during use.

[0049] The control port is arranged between the clamping portion 226 and the connecting protrusion 211, the snap button 3 extends toward the battery pack 6, and one end of the snap button 3 passes through the outer shell 2 and extends toward the battery pack 6, and a clearance portion 36 corresponding to the battery pack 6 is formed on the side of the snap button 3. The clearance portion 36 and the control port arranged between the clamping portion 226 and the connecting protrusion 211 facilitate the snap button 3 to stay away from the battery pack 6, thereby avoiding interference between the snap button 3 and the battery pack 6 and reducing the volume of the battery pack.

[0050] In this embodiment, the installation cavity 23 extends into the connecting protrusion 211 to form a recess 25 , and the snap-on button 3 is movably disposed in the recess 25 .

[0051] A convex edge 215 is formed on both sides of the connecting protrusion 211, and the connecting groove 212 is formed on one side of the convex edge 215. The thickness of the convex edge 215 decreases with the increase of the distance from the clamping portion 226. This structure is convenient for reducing the friction between the battery pack and the power tool 1 during the disassembly and installation process, and is convenient for the disassembly and installation of the battery pack and the power tool 1. This structure is convenient for the close installation of the battery pack and the power tool 1, and avoids the shaking of the battery pack and the power tool 1 during use.

[0052] The installation cavity 23 is arranged in the first shell 21. When the battery pack is assembled, the battery pack 6 is first installed in the installation cavity 23, and the mounting seat 4, the snap-on button 3 and the elastic member 5 are relatively installed, and then the mounting seat 4 and the snap-on button 3 are installed on the second shell 22. At this time, the limit groove 221 can limit the movement range of the snap-on button 3 and prevent the snap-on button 3 from being separated from the second shell 22. Then, the snap-on protrusion 225 and the snap-on groove 217 on the first shell 21 and the second shell 22 are matched, and finally the first shell 21 and the second shell 22 are relatively fixed by the fastener 26.

[0053] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery pack, comprising a housing (2), wherein a battery pack (6) is arranged in the housing (2), characterized in that: The housing (2) comprises a first housing (21) and a second housing (22) which are detachably arranged, a mounting cavity (23) is formed between the first housing (21) and the second housing (22), a battery pack (6) is arranged in the mounting cavity (23), and an elastic member (5) and two groups of snap-on buttons (3) are also arranged in the mounting cavity (23); A connecting protrusion (211) is provided on one side of the installation cavity (23), connecting grooves (212) are provided on both sides of the connecting protrusion (211), a first guide groove (213) is provided at the bottom of the connecting groove (212), a button portion (34) and a hook portion (31) are provided on the snap-fit ​​button (3), and control ports are provided on both sides of the housing (2); the button portion (34) passes through the control port and is exposed to the outside, the elastic member (5) drives the snap-fit ​​button (3) to reset, and enables the hook portion (31) to pass through the first guide groove (213) and pass into the connecting groove (212).

2. A battery pack according to claim 1, characterized in that: The first guide groove (213) extends toward the side wall of the connecting groove (212) to form a second guide groove (214), and the second guide groove (214) is adapted to the hook portion (31); when the hook portion (31) penetrates into the connecting groove (212), the side surface of the hook portion (31) penetrates into the second guide groove (214).

3. A battery pack according to claim 1, characterized in that: The housing (2) is detachably provided with a mounting seat (4), the mounting seat (4) is provided with two groups of guide holes (41), and the snap-on buttons (3) are each provided with a guide rod (32) adapted to the guide holes (41).

4. A battery pack according to claim 3, characterized in that: The elastic member (5) is a compression spring which is sleeved on the guide rod (32), and one end of the elastic member (5) abuts against the clamping button (3), while the other end of the elastic member (5) abuts against the mounting seat (4).

5. A battery pack according to claim 3, characterized in that: The second shell (22) is provided with a mounting groove (222), the two ends of the mounting groove (222) respectively extend to the control ports on both sides of the outer shell (2), the mounting seat (4) is detachably arranged in the mounting groove (222), and a positioning groove (223) is provided on the side of the mounting groove (222), and a positioning protrusion (43) adapted to the positioning groove (223) is provided on the side of the mounting seat (4).

6. A battery pack according to claim 1, characterized in that: The snap-on button (3) is provided with a limiting protrusion (33), and the first housing (21) or the second housing (22) is provided with a limiting groove (221) adapted to the limiting protrusion (33). During the movement of the snap-on button (3), the limiting protrusion (33) slides relatively in the limiting groove (221).

7. A battery pack according to claim 1, characterized in that: The control port is arranged between the first shell (21) and the second shell (22); the connecting protrusion (211) is arranged on the first shell (21); the second shell (22) extends toward the end of the connecting protrusion (211) to form a clamping portion (226); and the clamping portion (226) and the connecting protrusion (211) are mutually clamped.

8. A battery pack according to claim 7, characterized in that: The control port is arranged between the pressing portion (226) and the connecting protrusion (211); the snap-on button (3) extends toward the battery pack (6); and one end of the snap-on button (3) passes through the housing (2) and extends toward the battery pack (6); and a clearance portion (36) corresponding to the battery pack (6) is formed on the side of the snap-on button (3).

9. A battery pack according to claim 7, characterized in that: The connecting protrusion (211) has convex edges (215) formed on both sides, and the connecting groove (212) is formed on one side of the convex edge (215), and the thickness of the convex edge (215) decreases as the distance from the pressing portion (226) increases.

10. A battery pack according to claim 7, characterized in that: The pressing portion (226) is provided with a positioning groove (224), a clamping protrusion (225) is provided in the positioning groove (224), a positioning portion (216) adapted to the positioning groove (224) is provided on the connecting protrusion (211), and a clamping groove (217) adapted to the clamping protrusion (225) is provided on the positioning portion (216).

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