Telescopic battery pack protective cover

Abstract

The utility model relates to the field of battery packs, and discloses a telescopic battery pack protective cover which comprises a protective cover body, a telescopic assembly is arranged on the inner wall of the protective cover body, the telescopic assembly comprises a telescopic frame, a plurality of sets of positioning grooves are formed in the front surface of the telescopic frame, and the positioning grooves are all formed in the front surface of the telescopic frame. The inner wall of the front surface of the protective cover penetrates through and is slidably connected with a positioning rod, the positioning rod slides on the inner wall of the positioning groove, and the outer wall of the positioning rod is rotatably connected with a circular ring. According to the utility model, when the volume of the battery pack is expanded to a certain extent due to heat generated by charging and discharging of the battery pack, the telescopic frame is extruded to move outwards, and the cambered surface of the positioning rod is extruded through the inclined surface of the positioning groove, so that the positioning rod is matched with the spring after moving outwards to extrude and position the telescopic frame; therefore, the expansion change can be adapted in time, the battery pack is prevented from being damaged due to excessive internal pressure, and the applicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery packs, and in particular to a retractable battery pack protective cover. Background Technology

[0002] With the rapid development of technology, battery packs have been widely used in many fields, such as electric vehicles, power tools, and mobile electronic devices. The performance and safety of battery packs directly affect the use effect and user experience of related devices.

[0003] In existing technologies, traditional battery pack protective covers are mostly designed with fixed sizes and shapes. This fixed structure of the protective cover has obvious limitations. On the one hand, because the battery pack generates heat during use due to charging and discharging, its volume expands to a certain extent. The fixed-size protective cover cannot adapt to this change, which may put additional pressure on the battery pack, affect its normal operation, or even damage the internal structure of the battery pack. On the other hand, different models and specifications of battery packs have different sizes. In order to adapt to multiple battery packs, multiple protective covers of different sizes need to be produced, which increases production costs and reduces applicability.

[0004] A search revealed Chinese Patent Publication No. CN219873891U, which discloses a retractable battery pack protective cover. This cover includes an integrally formed cover wall and a telescopic component. The telescopic component has at least one stage of telescopic structure. When no external force is applied to the telescopic component, it extends away from the cover wall, forming an extended protective cover state. When an external force is applied to the telescopic component, it extends towards the cover wall, forming a compressed protective cover state. This utility model's battery pack protective cover is retractable. When the cover is in the extended state, it can cover and protect larger battery packs; when the cover is in the compressed state, it can cover and protect smaller battery packs. Furthermore, the telescopic component of this utility model can have multiple stages of telescopic structure, thus enabling it to cover and protect battery packs of various sizes. The design is simple and easy to operate.

[0005] While the aforementioned technology can accommodate protective covers of different sizes, it cannot adjust the telescopic design on the left and right sides. As the battery pack expands to a certain extent during use, the fixed left and right sides cannot adapt to this change, which may put additional pressure on the battery pack, affecting its normal operation and even damaging the internal structure of the battery pack. Therefore, it has low applicability. To address this issue, a telescopic battery pack protective cover is proposed. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a retractable battery pack protective cover, which aims to improve the problem in the prior art that "the battery pack will expand in volume due to the heat generated during charging and discharging, and the fixed-size protective cover cannot adapt to this change, which may put additional pressure on the battery pack, affecting its operation or damaging the internal structure".

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a retractable battery pack protective cover, comprising a protective cover, wherein a telescopic component is provided on the inner wall of the protective cover, the telescopic component includes a telescopic frame, the front surface of the telescopic frame is provided with positioning grooves and multiple sets thereof, all of the multiple sets of positioning grooves are provided on the front surface of the telescopic frame, a positioning rod is slidably connected through and to the inner wall of the front surface of the protective cover, the positioning rod slides on the inner wall of the positioning groove, a ring is rotatably connected to the outer wall of the positioning rod, a rotating block is fixedly connected to the front surface of the positioning rod, a circular groove is provided on the front surface of the protective cover, the rotating block is rotatably connected to the front surface of the guide block, and guide blocks are fixedly connected to the inner walls on both sides of the left side of the circular groove.

[0008] As a further description of the above technical solution:

[0009] A heat dissipation component is provided on the right side of the telescopic frame. The heat dissipation component includes a baffle. A ventilation slot is provided on the right side of the telescopic frame. A sliding groove is provided on the front of the right side of the telescopic frame near the ventilation slot.

[0010] As a further description of the above technical solution:

[0011] The right side of the front surface of the guide block is set as an inclined surface, and the front surface of the protective cover is provided with a second sliding groove on the inner wall of the rear of the circular groove. The circular ring is slidably connected to the inner wall of the second sliding groove.

[0012] As a further description of the above technical solution:

[0013] The ring and the protective cover are elastically connected by a spring. One end of the spring is fixedly connected to the inner wall of the front surface of the slide groove, and the other end of the spring is fixedly connected to the front surface of the ring.

[0014] As a further description of the above technical solution:

[0015] The inner wall of the front surface of the protective cover is provided with a groove, and a slider is slidably connected to the inner wall of the groove. The slider is fixedly connected to the front surface of the telescopic frame.

[0016] As a further description of the above technical solution:

[0017] The front surface of the positioning groove is set as an inclined surface, and the rear surface of the positioning rod is set as an arc surface.

[0018] As a further description of the above technical solution:

[0019] The baffle is slidably connected to the inner wall of the ventilation slot, and a rubber pad is fixedly connected to the right side of the baffle.

[0020] As a further description of the above technical solution:

[0021] A lever is fixedly connected to the right side of the rubber pad. The lever is slidably connected to the inner wall of the slide groove three. The front surface of the protective cover has heat dissipation holes and multiple sets of them.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, a telescopic frame is set up in conjunction with a protective cover to protect the battery pack. When the battery pack generates heat due to charging and discharging, causing its volume to expand to a certain extent, it will squeeze the telescopic frame, causing the telescopic frame to move outward. The inclined surface of the positioning groove squeezes the arc surface of the positioning rod, causing the positioning rod to move outward and then cooperate with the spring to squeeze and position the telescopic frame. This allows it to adapt to the expansion changes in a timely manner, avoids damage to the battery pack due to excessive internal pressure, and improves its applicability.

[0024] 2. In this utility model, by setting a baffle and heat dissipation holes, the heat dissipation effect can be improved through the heat dissipation holes. At the same time, by moving the lever to open the baffle, good air circulation is formed, which effectively reduces the temperature of the battery pack and avoids performance degradation or even failure due to overheating. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model;

[0026] Figure 2 This is a three-dimensional structural breakdown diagram of the telescopic frame in this utility model;

[0027] Figure 3 This is a three-dimensional cross-sectional view of the front part of the protective cover in this utility model;

[0028] Figure 4 This is a three-dimensional structural diagram of the right-side cross-section of the front part of the protective cover in this utility model;

[0029] Figure 5 This is a three-dimensional structural breakdown diagram of the positioning rod, spring, ring, and guide block in this utility model.

[0030] Legend:

[0031] 1. Protective cover; 2. Telescopic frame; 3. Baffle; 21. Positioning rod; 22. Rotating block; 23. Guide block; 24. Positioning groove; 25. Slide groove one; 26. Ring; 27. Circular groove; 28. Slider; 29. ​​Slide groove two; 210. Spring; 31. Toggle block; 32. Rubber pad; 33. Ventilation groove; 34. Slide groove three; 35. Heat dissipation hole. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of a retractable battery pack protective cover, including a protective cover 1 for protecting the battery pack. The inner wall of the protective cover 1 is provided with a telescopic component, which includes a telescopic frame 2 that can adapt to the expansion and contraction of the battery pack, preventing damage due to excessive internal pressure and improving applicability. The front surface of the telescopic frame 2 has multiple positioning grooves 24 that cooperate with a positioning rod 21 and a spring 210 to temporarily position the telescopic frame 2. All multiple positioning grooves 24 are located on the front surface of the telescopic frame 2. The assembly can accommodate battery packs of different sizes and can also accommodate battery pack expansion. The inner wall of the front surface of the protective cover 1 is slidably connected to a positioning rod 21 that slides into the positioning groove 24 to temporarily position the telescopic frame 2. The positioning rod 21 slides on the inner wall of the positioning groove 24. The outer wall of the positioning rod 21 is rotatably connected to a ring 26 that supports the positioning rod 21. When the positioning rod 21 moves, it drives the ring 26 to move and compress the spring 210. The reverse force of the spring 210 being compressed causes the positioning rod 21 to return to its original position and slide into the positioning groove 24 to temporarily position the telescopic frame 2.

[0034] Furthermore, a rotating block 22 is fixedly connected to the front surface of the positioning rod 21, which drives the positioning rod 21 to move. After rotating the rotating block 22, it slides along the inclined surface of the guide block 23, causing the rotating block 22 to move outward, pulling the positioning rod 21 to rotate and move outward, causing the ring 26 to move outward and compress the spring 210. At this time, the telescopic frame 2 can be released from positioning, and the position of the telescopic frame 2 can be easily adjusted. When the battery pack size is different, the left and right distance of the telescopic frame 2 can be adjusted to adapt to different battery pack sizes, increasing applicability. The front surface of the protective cover 1 has a circular groove 27 that provides space for the rotating block 22 to rotate. The rotating block 22 is rotatably connected to the front surface of the guide block 23. The inner walls on both sides of the left side of the circular groove 27 are fixedly connected to the guide block 23, which compresses the rotating block 22 and allows the rotating block 22 to move outward.

[0035] Reference Figure 1 and Figure 2 The right side of the telescopic frame 2 is provided with a heat dissipation component, which includes a baffle 3 for providing and protecting the frame. The right side of the telescopic frame 2 is provided with a ventilation slot 33, which can be opened to cooperate with the ventilation slot 33 for heat dissipation and ventilation. The right side of the telescopic frame 2 is provided with a sliding groove 34 near the ventilation slot 33 to provide space for the movement of the lever 31.

[0036] Reference Figure 2 , Figure 4 and Figure 5 The right side of the front surface of the guide block 23 is set as an inclined surface. When the rotating block 22 is rotated and presses the right inclined surface of the guide block 23, the rotating block 22 rotates and moves outward at the same time, causing the positioning rod 21 to rotate and move outward at the same time, sliding out of the positioning groove 24. At the same time, the positioning rod 21 drives the ring 26 to move outward and compress the spring 210. The front surface of the protective cover 1 has a space for the ring 26 to move and a spring 210 on the rear inner wall near the circular groove 27. The space has a second slide groove 29, and the ring 26 is slidably connected to the inner wall of the slide groove 29. The ring 26 and the protective cover 1 are elastically connected by a spring 210. One end of the spring 210 is fixedly connected to the inner wall of the front surface of the slide groove 29, and the other end of the spring 210 is fixedly connected to the front surface of the ring 26. When the ring 26 moves outward, it will squeeze the spring 210. The reverse force of the squeezed spring 210 can make the ring 26 and the positioning rod 21 return to the positioning groove 24 and temporarily position the telescopic frame 2.

[0037] Reference Figure 3 , Figure 4 and Figure 5The inner wall of the front surface of the protective cover 1 is provided with a groove 25 for the slider 28 to slide and for positioning the slider 28 by a certain distance. The inner wall of the groove 25 is slidably connected to the support telescopic frame 2 and the slider 28 that cooperates with the groove 25 to position the telescopic frame 2 by a certain distance. The slider 28 is fixedly connected to the front surface of the telescopic frame 2. The front surface of the positioning groove 24 is set as an inclined surface and the rear surface of the positioning rod 21 is set as an arc surface. Because the front surface of the positioning groove 24 is set as an inclined surface and the rear surface of the positioning rod 21 is set as an arc surface, when the telescopic frame 2 moves, it will squeeze the arc surface of the positioning rod 21. The front surface of the positioning groove 24 squeezes the arc surface of the rear surface of the positioning rod 21, thereby allowing the positioning rod 21 to move outward. At this time, the telescopic frame 2 can move outward, adapting to the expansion and change of the battery pack in time, avoiding damage to the battery pack due to excessive internal pressure, and improving applicability.

[0038] Reference Figure 1 , Figure 2 and Figure 4 The baffle 3 is slidably connected to the inner wall of the ventilation slot 33. A rubber pad 32 is fixedly connected to the right side of the baffle 3 to increase friction and stability. A lever 31 is fixedly connected to the right side of the rubber pad 32 to move the rubber pad 32 and the baffle 3. The lever 31 is slidably connected to the inner wall of the slide groove 34. The front surface of the protective cover 1 is provided with heat dissipation holes 35 and multiple sets are provided. The heat dissipation holes 35 are provided on the front surface of the telescopic frame 2 and are connected to the heat dissipation holes 35 on the front surface of the protective cover 1. There are two sets of telescopic frame 2, positioning rod 21 and guide block 23. The two sets of telescopic frame 2, positioning rod 21 and guide block 23 are symmetrically arranged with the center line of the protective cover 1 as the axis of symmetry.

[0039] Working principle: During use, when the battery pack expands due to heat generated during charging and discharging, it applies pressure to the telescopic frame 2. Under pressure, the telescopic frame 2 moves outward. During this movement, the inclined surface of the positioning groove 24 presses against the arc surface of the positioning rod 21, causing the positioning rod 21 to move outward. As the positioning rod 21 moves, it drives the ring 26 to move outward and compresses the spring 210. When the telescopic frame 2 moves to the appropriate position, the positioning rod 21 returns to its original position under the reverse force of the spring 210 being compressed, sliding into the positioning groove 24 or compressing the telescopic frame 2, thus temporarily positioning the telescopic frame 2. This adapts to the expansion changes of the battery pack, preventing damage to the battery pack due to excessive internal pressure and improving its applicability.

[0040] When the position of the telescopic frame 2 needs to be adjusted to accommodate battery packs of different sizes, rotate the rotating block 22. The rotating block 22 slides along the inclined surface of the guide block 23 and moves outward at the same time, pulling the positioning rod 21 to rotate and move outward, causing the ring 26 to move outward and compress the spring 210. At this time, the telescopic frame 2 is released from positioning, and the left and right distance of the telescopic frame 2 can be easily adjusted to accommodate battery packs of different sizes for protection.

[0041] In terms of heat dissipation, multiple sets of heat dissipation holes 35 are opened on the protective cover 1. At the same time, the ventilation slot 33 on the right side of the telescopic frame 2 can form a good ventilation channel with the heat dissipation holes 35 when the baffle 3 is opened, further improving the heat dissipation effect. When it is necessary to enhance heat dissipation, by sliding the toggle block 31 to the right, the baffle 3 is moved to slide on the inner wall of the ventilation slot 33, thereby opening the ventilation slot 33, allowing outside air to enter and hot air to be discharged, thus improving the heat dissipation effect.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A retractable battery pack protective cover, comprising a protective cover (1), characterized in that: The inner wall of the protective cover (1) is provided with a telescopic component, which includes a telescopic frame (2). The front surface of the telescopic frame (2) is provided with a positioning groove (24) and multiple sets of such grooves (24) are provided. The inner wall of the front surface of the protective cover (1) is slidably connected to a positioning rod (21). The positioning rod (21) slides on the inner wall of the positioning groove (24). The outer wall of the positioning rod (21) is rotatably connected to a ring (26). The front surface of the positioning rod (21) is fixedly connected to a rotating block (22). The front surface of the protective cover (1) is provided with a circular groove (27). The rotating block (22) is rotatably connected to the front surface of a guide block (23). The inner walls on both sides of the left side of the circular groove (27) are fixedly connected to guide blocks (23).

2. The retractable battery pack protective cover according to claim 1, characterized in that: A heat dissipation component is provided on the right side of the telescopic frame (2), the heat dissipation component includes a baffle (3), a ventilation slot (33) is provided on the right side of the telescopic frame (2), and a sliding groove (34) is provided on the front of the right side of the telescopic frame (2) near the ventilation slot (33).

3. The retractable battery pack protective cover according to claim 1, characterized in that: The right side of the front surface of the guide block (23) is set as an inclined surface, and the front surface of the protective cover (1) is provided with a sliding groove (29) on the inner wall of the rear of the circular groove (27), and the circular ring (26) is slidably connected to the inner wall of the sliding groove (29).

4. The retractable battery pack protective cover according to claim 1, characterized in that: The ring (26) and the protective cover (1) are elastically connected by a spring (210). One end of the spring (210) is fixedly connected to the inner wall of the front surface of the slide groove (29), and the other end of the spring (210) is fixedly connected to the front surface of the ring (26).

5. A retractable battery pack protective cover according to claim 1, characterized in that: The inner wall of the front surface of the protective cover (1) is provided with a sliding groove (25), and a slider (28) is slidably connected to the inner wall of the sliding groove (25). The slider (28) is fixedly connected to the front surface of the telescopic frame (2).

6. A retractable battery pack protective cover according to claim 1, characterized in that: The front surface of the positioning groove (24) is set as an inclined surface, and the rear surface of the positioning rod (21) is set as an arc surface.

7. A retractable battery pack protective cover according to claim 2, characterized in that: The baffle (3) is slidably connected to the inner wall of the ventilation slot (33), and a rubber pad (32) is fixedly connected to the right side of the baffle (3).

8. A retractable battery pack protective cover according to claim 7, characterized in that: A lever (31) is fixedly connected to the right side of the rubber pad (32). The lever (31) is slidably connected to the inner wall of the slide groove (34). The front surface of the protective cover (1) is provided with heat dissipation holes (35) and multiple sets of holes are provided.

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