Battery pack structure of sanding machine

Abstract

The utility model relates to the technical field of battery packs, in particular to a battery pack structure of a sander, which comprises a sander body and a radiating device, a connecting seat is arranged on one side of the sander body, a battery pack body is arranged in the connecting seat, and the radiating device is arranged on the surface of the battery pack body and comprises a filter cover. The filter cover is fixedly connected with the surface of one side of the battery pack body, the inner wall of the filter cover is fixedly connected with a motor, the output end of the motor is fixedly connected with fan blades, one side of the filter cover is provided with a plurality of exhaust holes, and the inner wall of the filter cover is fixedly connected with two fixed shafts. The heat in the battery pack can be quickly blown out and discharged, impurities can be filtered during air exhaust and heat dissipation, the temperature of the battery pack can be kept within a proper range, and the problems of acceleration of chemical reaction in the battery, aging of electrode materials and the like caused by high temperature are reduced, so that the service life of the battery is prolonged.

Description

Technical Field

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

[0002] A sander is a commonly used woodworking tool and metal processing tool for grinding the surface of a workpiece to remove burrs, scratches, oxide layers, etc. on the surface of the workpiece, so that the surface of the workpiece is smooth and flat. A sander powered by a battery pack (rechargeable battery) usually has a detachable battery pack installed on the device for timely replacement, and the battery pack supplies power to the device by means of plug-in electrical connection.

[0003] The prior art such as the utility model with the publication number of CN212218368U relates to the technical field of battery packs, and discloses a battery pack, a combination of a battery pack and a power tool, and a combination of a battery pack and a charger; the battery pack includes: a housing provided with a clamping portion; on both sides of the clamping portion, a first clamping groove and a second clamping groove for adapting to two clamping blocks on a power tool and / or a charger are respectively provided; the first clamping groove has a first side wall, the second clamping groove has a second side wall, and the distance between the first side wall and the second side wall is less than or equal to the distance between the two clamping blocks; a circuit module is arranged in the housing, and a positive terminal, a charging control input terminal, an identity recognition terminal, a digital communication terminal and a negative terminal are connected in the circuit module; an identification resistor is electrically connected between the identity recognition terminal and the digital communication terminal; the power tool and / or the charger can obtain the parameter information of the battery pack according to the identification resistor. The advantages of the utility model are that the connection between the battery pack and the power tool and / or the charger is firm and reliable, and the battery pack has high safety and strong versatility, solving the problems that the connection structure design of the existing battery pack is generally unreasonable, and after assembly, the battery pack is prone to shaking and too large gaps; or difficult assembly and disassembly, too small assembly gaps, etc.; and there is also the problem that when the power tool and the charger identify the battery pack, they often cannot be identified, which limits the compatibility and versatility of the battery pack.

[0004] In daily work, it is found that when the battery pack of the existing sander is in use, a large amount of heat is easily accumulated inside, and the heat cannot be quickly discharged from the inside of the battery pack. Therefore, when charging quickly or using at high load, the battery pack may heat up severely, affecting the service life of the battery pack and prone to fire, thus leading to the problem that the existing battery pack is not easy to dissipate heat. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the disadvantage of not being easy to dissipate heat in the prior art, and to propose a battery pack structure for a sander.

[0006] To achieve the above object, the utility model adopts the following technical solution: A battery pack structure of a sander, including a sander body and a heat dissipation device. A connection seat is provided on one side of the sander body, and a battery pack body is arranged in the connection seat. The heat dissipation device is arranged on the surface of the battery pack body. The heat dissipation device includes a filter cover, and the filter cover is fixedly connected to one side surface of the battery pack body. A motor is fixedly connected to the inner wall of the filter cover, and a fan blade is fixedly connected to the output end of the motor. A plurality of exhaust holes are opened on one side of the filter cover. Two fixed shafts are fixedly connected to the inner wall of the filter cover, and a first cover plate and a second cover plate are respectively rotatably connected to the surfaces of the two fixed shafts. A connection component is arranged on the surface of the first cover plate, and a filtering component is arranged on the inner wall of the battery pack body. Through the above components, when heat dissipation is required, the first cover plate and the second cover plate can be rotated on the fixed shafts to open the first cover plate and the second cover plate. Subsequently, the shielding of the exhaust holes is lost, and the motor drives the fan blade to rotate, blowing air into the battery pack body. The filter cover can filter, and then the hot air in the battery pack body will be quickly discharged from the exhaust holes. When the motor is not used and natural heat dissipation is carried out through the exhaust holes, the filtering component can filter.

[0007] Preferably, a first return spring and a second return spring are respectively sleeved on the surfaces of the two fixed shafts. The two ends of the first return spring are respectively fixedly connected to the first cover plate and the inner wall of the battery pack body, and the two ends of the second return spring are respectively fixedly connected to the second cover plate and the inner wall of the battery pack body. Through the above components, the first return spring and the second return spring can drive the first cover plate and the second cover plate to rotate and reset, improving the stability of the first cover plate and the second cover plate after being opened.

[0008] Preferably, the connection component includes limit blocks. The number of limit blocks is two. The two limit blocks are slidably connected to the inner wall of the first cover plate. Push blocks are fixedly connected to the surfaces of the two limit blocks. The limit blocks are inserted into the inner wall of the second cover plate. Through the above components, when the first cover plate and the second cover plate are both closed, the limit blocks can be inserted into the inner wall of the second cover plate through the push blocks to achieve the limiting effect.

[0009] Preferably, two stabilizing springs are fixedly connected to the side of the limit block corresponding to the inner wall of the first cover plate. The number of stabilizing springs is two. Through the above components, the stabilizing springs can control the limit blocks and the push blocks to reset, and at the same time ensure the stability of the limit blocks.

[0010] Preferably, two positioning columns are respectively fixedly connected to one side surface of the first cover plate and the second cover plate. Through the above components, when the first cover plate and the second cover plate are closed, the positioning columns can limit the first cover plate and the second cover plate, and can ensure that the first cover plate and the second cover plate are parallel, facilitating the insertion of the limit blocks into the inner wall of the second cover plate.

[0011] Preferably, the filtering component includes a filter element which is inserted into the inner wall of the battery pack body. A pulling block is fixedly connected to one side surface of the filter element. Through the above components, the filter element can be inserted into or withdrawn from the battery pack body by the pulling block. The filter element can filter and intercept impurities, reducing the situation that impurities enter the battery pack body and affect the use.

[0012] Preferably, two first magnetic rings are fixedly connected to the surface of the pulling block, and two second magnetic rings are fixedly connected to the inner wall of the battery pack body. Through the above components, after the pulling block drives the filter element to be inserted into the inner wall of the battery pack body, the first magnetic ring can contact and attract the second magnetic ring for positioning.

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

[0014] In the present utility model, by setting the heat dissipation device, the heat in the battery pack can be quickly blown out and discharged. At the same time, when exhausting and dissipating heat, impurities can be filtered, and the temperature of the battery pack can be maintained within a suitable range, reducing problems such as the acceleration of internal chemical reactions in the battery and the aging of electrode materials caused by high temperature, thereby prolonging the service life of the battery. Description of the Drawings

[0015] Figure 1 is a three-dimensional structure schematic diagram of the battery pack structure of a sander proposed by the present utility model;

[0016] Figure 2 is a schematic diagram of the battery pack body structure of the battery pack structure of a sander proposed by the present utility model;

[0017] Figure 3 is a partial structure schematic diagram of the battery pack structure of a sander proposed by the present utility model Figure 2 ;

[0018] Figure 4 is a partial exploded structure schematic diagram of the battery pack structure of a sander proposed by the present utility model;

[0019] Figure 5 is a partial structure schematic diagram of the heat dissipation device of the battery pack structure of a sander proposed by the present utility model

[0020] Figure 6 is another partial structure schematic diagram of the heat dissipation device of the battery pack structure of a sander proposed by the present utility model.

[0021] Legend Explanation:

[0022] 1. Sander body; 2. Connecting seat; 3. Battery pack body; 4. Heat dissipation device; 41. Filter cover; 42. First cover plate; 43. Second cover plate; 44. Connecting component; 441. Limit block; 442. Pushing block; 443. Stabilizing spring; 45. Filter component; 451. Filter element; 452. Pulling block; 453. First magnetic ring; 454. Second magnetic ring; 46. Fixed shaft; 47. Fan blade; 48. Motor; 49. Exhaust hole; 410. Positioning post; 411. First reset spring; 412. Second reset spring. Detailed implementation manner

[0023] Please refer to Figures 1-6 , the present utility model provides a technical solution: a battery pack structure of a sander, including a sander body 1 and a heat dissipation device 4. A connecting seat 2 is arranged on one side of the sander body 1, a battery pack body 3 is arranged in the connecting seat 2, and the heat dissipation device 4 is arranged on the surface of the battery pack body 3.

[0024] The battery pack body 3 and the sander body 1 are vertically arranged, so as to improve the horizontal distance of the battery pack from the center of the sander body 1, so that the equipment achieves a better balance effect.

[0025] Specifically, the heat dissipation device 4 includes a filter cover 41. The filter cover 41 is fixedly connected to one side surface of the battery pack body 3. An electric motor 48 is fixedly connected to the inner wall of the filter cover 41. The output end of the electric motor 48 is fixedly connected to a fan blade 47. A plurality of exhaust holes 49 are formed on one side of the filter cover 41. Two fixed shafts 46 are fixedly connected to the inner wall of the filter cover 41. A first cover plate 42 and a second cover plate 43 are respectively rotatably connected to the surfaces of the two fixed shafts 46. A connecting component 44 is arranged on the surface of the first cover plate 42, and a filter component 45 is arranged on the inner wall of the battery pack body 3.

[0026] In this embodiment: when heat dissipation is required, the first cover plate 42 and the second cover plate 43 can be rotated on the fixed shaft 46 to open the first cover plate 42 and the second cover plate 43. Subsequently, the shielding of the exhaust holes 49 is lost, the electric motor 48 drives the fan blade 47 to rotate, and the wind is blown into the battery pack body 3. The filter cover 41 can filter, and then the gas quickly discharges the hot air in the battery pack body 3 from the exhaust holes 49. When the electric motor 48 is not used and natural heat dissipation is carried out through the exhaust holes 49, the filter component 45 can filter.

[0027] Specifically, a first reset spring 411 and a second reset spring 412 are respectively sleeved on the surfaces of the two fixed shafts 46. The two ends of the first reset spring 411 are respectively fixedly connected to the first cover plate 42 and the inner wall of the battery pack body 3. The two ends of the second reset spring 412 are respectively fixedly connected to the second cover plate 43 and the inner wall of the battery pack body 3. The first reset spring 411 and the second reset spring 412 can drive the first cover plate 42 and the second cover plate 43 to rotate and reset, improving the stability of the first cover plate 42 and the second cover plate 43 after being opened.

[0028] Specifically, the connecting component 44 includes a limiting block 441. There are two limiting blocks 441. The two limiting blocks 441 are slidably connected to the inner wall of the first cover plate 42. A pushing block 442 is fixedly connected to the surfaces of the two limiting blocks 441. The limiting block 441 is inserted into the inner wall of the second cover plate 43.

[0029] In this embodiment: When both the first cover plate 42 and the second cover plate 43 are closed, the limiting block 441 can be inserted into the inner wall of the second cover plate 43 through the pushing block 442 to achieve the limiting function.

[0030] Specifically, a stabilizing spring 443 is fixedly connected to the side of the limiting block 441 corresponding to the inner wall of the first cover plate 42. There are two stabilizing springs 443. The stabilizing springs 443 can control the reset of the limiting block 441 and the pushing block 442, and at the same time ensure the stability of the limiting block 441.

[0031] Specifically, two positioning columns 410 are respectively fixedly connected to one side surface of the first cover plate 42 and the second cover plate 43.

[0032] In this embodiment: When the first cover plate 42 and the second cover plate 43 are closed, the positioning columns 410 can limit the first cover plate 42 and the second cover plate 43, and can ensure that the first cover plate 42 and the second cover plate 43 are parallel, which is convenient for the limiting block 441 to be inserted into the inner wall of the second cover plate 43.

[0033] Specifically, the filtering component 45 includes a filtering element 451. The filtering element 451 is inserted into the inner wall of the battery pack body 3. A pulling block 452 is fixedly connected to one side surface of the filtering element 451. The filtering element 451 can be inserted into the battery pack body 3 or pulled out from the battery pack body 3 through the pulling block 452. The filtering element 451 can filter and intercept impurities, reducing the situation that impurities enter the battery pack body 3 and affect the use.

[0034] Specifically, two first magnetic rings 453 are fixedly connected to the surface of the pulling block 452, and two second magnetic rings 454 are fixedly connected to the inner wall of the battery pack body 3.

[0035] In this embodiment: After the pulling block 452 drives the filtering element 451 to be inserted into the inner wall of the battery pack body 3, the first magnetic ring 453 can contact and attract the second magnetic ring 454 for positioning.

[0036] Working principle: When the battery pack body 3 is under fast charging or high-load use, the push block 442 can push the limit block 441, and the stabilizing spring 443 is stressed. Subsequently, the limit block 441 moves out of the inner wall of the second cover plate 43. Then, the first return spring 411 and the second return spring 412 release elastic forces, respectively driving the first cover plate 42 and the second cover plate 43 to rotate and open in the fixed shaft 46. The hot air in the battery pack body 3 can be discharged through the exhaust holes 49 for heat dissipation. When fast heat dissipation is required, the motor 48 is turned on, and the motor 48 drives the fan blade 47 to rotate. The fan blade 47 can blow air into the battery pack body 3. The air can be filtered through the filter cover 41. After the filtered air blows into the inner wall of the battery pack body 3, it can drive the hot air in the battery pack body 3 to flow quickly and be quickly discharged from the exhaust holes 49, reducing the phenomenon of serious heat accumulation and overheating on the inner wall of the battery pack body 3. At the same time, the filter element 451 can intercept impurities at the exhaust holes 49, cooperate with the filter cover 41 to achieve front and rear interception, and prevent impurities from entering the battery pack body 3, thus completing the use.

Claims

1. A battery pack structure for a sanding machine, comprising a sanding machine body (1) and a heat dissipation device (4), characterized in that: A connection seat (2) is provided on one side of the sanding machine body (1), a battery pack (3) is provided in the connection seat (2), the heat dissipation device (4) is provided on the surface of the battery pack (3), the heat dissipation device (4) comprises a filter cover (41), the filter cover (41) is fixedly connected to the surface of one side of the battery pack (3), the inner wall of the filter cover (41) is fixedly connected to a motor (48), the output end of the motor (48) is fixedly connected to a fan blade (47), a plurality of exhaust holes (49) are provided on one side of the filter cover (41), the inner wall of the filter cover (41) is fixedly connected to two fixed shafts (46), the surfaces of the two fixed shafts (46) are rotatably connected to a cover plate 1 (42) and a cover plate 2 (43), the surface of the cover plate 1 (42) is provided with a connection component (44), and the inner wall of the battery pack (3) is provided with a filter component (45).

2. The battery pack structure of a sanding machine according to claim 1, characterized in that: A return spring 1 (411) and a return spring 2 (412) are respectively sleeved on the surfaces of the two fixed shafts (46); the two ends of the return spring 1 (411) are respectively fixedly connected to the cover plate 1 (42) and the inner wall of the battery package (3); and the two ends of the return spring 2 (412) are respectively fixedly connected to the cover plate 2 (43) and the inner wall of the battery package (3).

3. The battery pack structure of a sanding machine according to claim 1, characterized in that: The connection assembly (44) comprises a limit block (441), wherein there are two limit blocks (441), the two limit blocks (441) are slidably connected to the inner wall of the first cover plate (42), a push block (442) is fixedly connected to the surface of the two limit blocks (441), and the limit blocks (441) are plugged into the inner wall of the second cover plate (43).

4. The battery pack structure of a sanding machine according to claim 3, characterized in that: A stabilizing spring (443) is fixedly connected to one side of the limiting block (441) corresponding to the inner wall of the first cover plate (42), and there are two stabilizing springs (443).

5. The battery pack structure of a sanding machine according to claim 1, characterized in that: Two positioning columns (410) are fixedly connected to one side surface of the cover plate 1 (42) and the cover plate 2 (43) respectively.

6. The battery pack structure of a sanding machine according to claim 1, characterized in that: The filter assembly (45) comprises a filter element (451), the filter element (451) being plugged into the inner wall of the battery pack (3), and a pull block (452) being fixedly connected to one side surface of the filter element (451).

7. A battery pack structure for a sanding machine according to claim 6, characterized in that: The surface of the pull block (452) is fixedly connected to two first magnetic rings (453), and the inner wall of the battery package body (3) is fixedly connected to two second magnetic rings (454).

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