A new battery pack shock absorbing endoskeleton device

Abstract

The utility model discloses a novel battery pack shock attenuation endoskeleton device, the lower end of upper cover is slidably installed with lower cover, and the upper end and both sides of lower cover all are penetrated and are set up with a plurality of first slot holes, and the inner wall of first slot hole is fixedly connected with connecting block, and the upper end of connecting block of lower cover upper end is fixedly connected with first shock attenuation block, and the lower end of connecting block of lower cover upper end is fixedly connected with shock attenuation board, and the upper end of connecting block of both sides of lower cover is all fixedly connected with shock attenuation board, and the shock attenuation board of both sides of lower cover is all fixedly connected with second shock attenuation block in the end of mutual approach. Adopt second shock attenuation block to alleviate the impact of side wall, and the impact of outside to inside electric core is alleviated through shock attenuation board. The utility model has the advantages of preventing electric core assembly from longitudinal movement when battery pack is shaking or falling, directly buffering bottom impact, and avoiding that force is directly transmitted to electric core.

Description

Technical Field

[0001] This utility model relates to the field of shock-absorbing internal skeletons, specifically a novel battery pack shock-absorbing internal skeleton device. Background Technology

[0002] The new battery pack shock-absorbing internal skeleton device is a structural system integrated inside the battery pack. It consists of a support frame made of high-strength, lightweight materials and multi-level buffer elements. When lithium battery tools are used or placed, it can evenly disperse and gradually attenuate external vibrations and impacts, protecting the safety of the battery cells and internal circuits.

[0003] In existing technologies, the cells and brackets inside the battery pack lack a stable positioning structure, making them prone to lateral displacement or longitudinal movement when subjected to vibration. Furthermore, the shock absorption design is mostly only for a single direction and cannot cover complex impact scenarios such as drops and collisions. Utility Model Content

[0004] The purpose of this invention is to provide a novel shock-absorbing internal skeleton device for battery packs, which has the advantages of preventing the battery cell components from moving longitudinally when the battery pack shakes or lands, directly buffering the impact at the bottom, and avoiding the direct transmission of force to the battery cells, thus solving the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A novel battery pack shock-absorbing internal skeleton device has a lower cover slidably installed on the lower end of the upper cover. Multiple first slots are opened through the upper end and both sides of the lower cover. Connecting blocks are fixed to the inner walls of the first slots. A first shock-absorbing block is fixed to the upper end of the connecting block at the upper end of the lower cover. A shock-absorbing plate is fixed to the lower end of the connecting block at the upper end of the lower cover. Shock-absorbing plates are fixed to the upper ends of the connecting blocks on both sides of the lower cover. A second shock-absorbing block is fixed to the end of the shock-absorbing plates on both sides of the lower cover that are close to each other.

[0006] Preferably, a first hole is provided through the upper end of the cover, and a button is fitted on the inner wall of the first hole.

[0007] It is worth noting that the buttons are directly exposed on the top of the cover, eliminating the need to search for the operation location and improving ease of use.

[0008] Preferably, barley paper is fixed to both sides of the inner wall of the top cover. A negative electrode connecting piece is slidably installed at one end of the two barley paper pieces that are close to each other. A first signal connecting piece is fixed to the upper end of the negative electrode connecting piece. A left bracket is fixed to one side of the first signal connecting piece. A battery is slidably installed on the inner wall of the left bracket. A right bracket is slidably installed on the other side of the battery. A positive electrode connecting piece is fixed to one side of the right bracket. A second signal connecting piece is fixed to the upper end of the positive electrode connecting piece.

[0009] It is worth noting that: barley paper has excellent insulation properties and is adhered between the inner wall of the top cover and the signal connection piece and the positive connection piece to avoid safety hazards caused by leakage or short circuit.

[0010] Preferably, the sides of the two barley papers that are close to each other are respectively attached to one side of the first signal connecting piece and the positive electrode connecting piece.

[0011] It is worth noting that the barley paper has a certain degree of flexibility. After being applied, it can buffer the collision and friction between the connecting piece and the inner wall of the top cover, avoid wear on the surface plating of the connecting piece after long-term use, ensure the stable conductivity of the connecting piece, extend the service life of the circuit components, and the applied barley paper can form a slight clamping force on the connecting piece to prevent it from shifting when the battery pack shakes, avoid circuit breakage caused by misalignment of the connecting piece, and ensure the stability of the battery pack's power supply.

[0012] Preferably, the left and right brackets are connected by a slot, the upper end of the left and right brackets is fixedly connected to the lower end of the spring, the lower end of the button is provided with a groove, the upper end of the spring is slidably installed inside the groove at the lower end of the button, and the upper end of the left and right brackets is fixedly connected to the PCB board by a cross screw.

[0013] It is worth noting that the slot connection does not require screws or other fasteners. The left and right brackets can be directly snapped together and fixed, which greatly simplifies the assembly steps of the battery cell assembly. At the same time, it ensures the strength of the bracket connection and avoids the battery arrangement from becoming loose. The spring connects the bracket and the button. When the user presses the button, the spring can buffer the pressing force and prevent the button from directly hitting the PCB board. At the same time, the spring's rebound force can make the button quickly reset, improving the operating feel.

[0014] Preferably, the upper end of the PCB board has a first screw hole, and a cross screw is threaded into the inner wall of the first screw hole. The lower end of the lower cover has a second screw hole, and a Torx screw is fitted into the inner wall of the second screw hole.

[0015] It is worth noting that the screw holes are located at the bottom of the upper cover and the bottom of the lower cover, respectively. When the screws are tightened, the shell is subjected to uniform force, which avoids cracking of the shell caused by local stress concentration and extends the service life of the shell.

[0016] Preferably, a second hole is provided through one side of the lower cover, and a lampshade is fixed to the inner wall of the second hole.

[0017] It is worth noting that the lampshade is fixed to the inner wall of the hole, which can prevent external dust and moisture from entering the housing, and at the same time protect the LED light from external impact, preventing the LED beads from breaking or short-circuiting due to water ingress.

[0018] Preferably, the two sides of the barley paper are attached to the second shock-absorbing blocks in the side walls of the upper and lower covers, and the lower ends of the left and right supports are attached to the upper ends of the plurality of first shock-absorbing blocks.

[0019] It is worth noting that: completely preventing components from moving around inside the casing ensures the relative position of each component is stable, reduces collision and wear, and the close-fitting installation can reduce the gap between components, compress the overall volume of the battery pack, accommodate more cells or simplify the structure in a limited space, reduce product weight, and improve portability.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The shock-absorbing plate of the lower cover of this utility model can directly buffer the impact from the bottom when the battery pack lands, while the second shock-absorbing block on the side wall of the lower cover can absorb the energy of the lateral swaying of the battery cell assembly. The two work together to form all-round shock absorption, avoid damage to the battery cell due to impact, and improve the drop resistance of the battery pack. 2. The top and bottom covers are fixed with screws, which can prevent the top and bottom covers from separating when the battery pack is subjected to severe impact, improve the overall sealing and structural strength of the shell, and is especially suitable for high-frequency vibration scenarios of power tools. The screw holes are respectively set at the top of the top cover and the bottom of the bottom cover. When the screws are tightened, the shell can be evenly stressed, avoiding shell cracking caused by local stress concentration. Attached Figure Description

[0021] Figure 1 This is an isometric schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the spring shaft side of this utility model; Figure 3 This is a cross-sectional schematic diagram of the first shock-absorbing block of this utility model; Figure 4 This is a schematic diagram of the second damping block of this utility model from the axial side. Figure 5 This is an exploded view of the overall structure of this utility model.

[0022] Reference numerals: 1. Top cover; 2. Button; 3. Spring; 4. Phillips head screw; 5. PCB board; 6. Negative terminal connector; 7. First signal connector; 8. Left bracket; 9. Battery; 10. Right bracket; 11. Second signal connector; 12. Positive terminal connector; 13. Barley paper; 14. Lampshade; 15. Bottom cover; 16. Torx screw; 17. First slot; 18. First damping block; 19. Connecting block; 20. Damping plate; 21. Second damping block. Detailed Implementation

[0023] 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.

[0024] To address the issues in existing battery pack technologies where the cells and supports lack a stable positioning structure, leading to lateral shifting or longitudinal movement under vibration, and where shock absorption designs are often limited to a single direction and cannot cover complex impact scenarios such as drops and collisions, the following technical solution is proposed. Please refer to [link / reference]. Figure 1-5 ; A novel battery pack shock-absorbing internal skeleton device includes a lower cover 15 slidably mounted on the lower end of an upper cover 1. Multiple first slots 17 are formed through the upper end and both sides of the lower cover 15. A connecting block 19 is fixed to the inner wall of each first slot 17. A first damping block 18 is fixed to the upper end of the connecting block 19 at the upper end of the lower cover 15. A damping plate 20 is fixed to the lower end of the connecting block 19 at the upper end of the lower cover 15. Damping plates 20 are fixed to the upper ends of the connecting blocks 19 on both sides of the lower cover 15. Second damping blocks 21 are fixed to the ends of the damping plates 20 on both sides of the lower cover 15 that are close to each other. A second hole is formed through one side of the lower cover 15, and a lampshade 14 is fixed to the inner wall of the second hole. A first hole is formed through the upper end of the upper cover 1, and a button 2 is fitted to the inner wall of the first hole.

[0025] Both sides of the inner wall of the top cover 1 are fixed with barley paper 13. A negative electrode connecting piece 6 is slidably installed at the end of the two barley paper 13 that are close to each other. A first signal connecting piece 7 is fixedly installed at the upper end of the negative electrode connecting piece 6. A left bracket 8 is fixedly installed on one side of the first signal connecting piece 7. A battery 9 is slidably installed on the inner wall of the left bracket 8. A right bracket 10 is slidably installed on the other side of the battery 9. A positive electrode connecting piece 12 is fixedly installed on one side of the right bracket 10. A second signal connecting piece 11 is fixedly installed at the upper end of the positive electrode connecting piece 12. The sides of the two barley paper 13 that are close to each other are respectively attached to one side of the first signal connecting piece 7 and the positive electrode connecting piece 12.

[0026] The left bracket 8 and the right bracket 10 are connected by a slot. The lower end of the spring 3 is fixed to the upper end of the left bracket 8 and the right bracket 10. The lower end of the button 2 is provided with a groove. The upper end of the spring 3 is slidably installed inside the groove at the lower end of the button 2. The upper end of the left bracket 8 and the right bracket 10 are fixed to the PCB board 5 by a cross screw 4.

[0027] The upper end of the PCB board 5 has a first screw hole, and the inner wall of the first screw hole is threaded with a cross screw 4. The lower end of the lower cover 15 has a second screw hole, and the inner wall of the second screw hole is fitted with a Torx screw 16. The two sides of the barley paper 13 are in contact with the second damping block 21 in the side wall of the upper cover 1 and the lower cover 15. The lower ends of the left bracket 8 and the right bracket 10 are in contact with the upper ends of multiple first damping blocks 18.

[0028] Working principle: First, the battery 9 is placed between the left bracket 8 and the right bracket 10. Then, the left bracket 8 and the right bracket 10 are directly engaged through the slots, quickly forming a cell support frame without the need for additional fasteners. This stably clamps multiple batteries 9 into the sliding grooves on the inner walls of the two brackets, preventing the batteries 9 from being loosely arranged or shifting laterally. The lower ends of the left bracket 8 and the right bracket 10 are precisely fitted with the first shock-absorbing block 18 at the upper end of the connecting block 19 in the first slot 17 of the lower cover 15. The first shock-absorbing block 18 is fixed to the lower cover 15 through the connecting block 19, forming a longitudinal positioning of the bracket and preventing the cell assembly from shifting longitudinally when the battery pack 9 shakes or falls. The negative terminal of the cell is connected to the circuit through the first signal connecting piece 7 on the side of the left bracket 8, and the positive terminal is conducted to the second signal connecting piece through the positive terminal connecting piece 12 on the side of the right bracket 10. 11. A complete energy path is formed from the battery cell to the connecting piece and then to the PCB board 5. The barley paper 13 fixed to both sides of the inner wall of the upper cover 1 is tightly attached to one side of the positive connecting piece 12 of the first signal connecting piece 7. The barley paper 13 has excellent insulation properties, which isolates the connecting piece from the contact with the metal or conductive material shell and completely blocks the leakage short circuit path. The initial splicing is achieved by the sliding cooperation between the lower end of the upper cover 1 and the lower cover 15, and the shell outline is quickly aligned. Then, the final fastening is achieved by the Torx screws 16 in the first screw hole at the upper end of the upper cover 1 and the second screw hole at the lower end of the lower cover 15. The screw holes are distributed at the top of the upper cover 1 and the bottom of the lower cover 15. When fastening, the force can be evenly distributed to the whole shell, avoiding the shell cracking caused by local stress concentration. At the same time, a closed shell space is formed to isolate the intrusion of external dust and impurities.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A novel battery pack shock-absorbing internal skeleton device, comprising a top cover (1), characterized in that, The lower cover (15) is slidably installed on the lower end of the upper cover (1). Multiple first slots (17) are opened through the upper end and both sides of the lower cover (15). A connecting block (19) is fixed to the inner wall of the first slot (17). A first damping block (18) is fixed to the upper end of the connecting block (19) at the upper end of the lower cover (15). A damping plate (20) is fixed to the lower end of the connecting block (19) at the upper end of the lower cover (15). A damping plate (20) is fixed to the upper end of the connecting blocks (19) on both sides of the lower cover (15). A second damping block (21) is fixed to the end of the damping plates (20) on both sides of the lower cover (15) that are close to each other.

2. The novel battery pack shock-absorbing internal skeleton device according to claim 1, characterized in that, The upper end of the cover (1) has a first hole, and the inner wall of the first hole is fitted with a button (2).

3. The novel battery pack shock-absorbing internal skeleton device according to claim 1, characterized in that, Both sides of the inner wall of the top cover (1) are fixed with barley paper (13). A negative electrode connecting piece (6) is slidably installed at one end of the two barley paper (13) that are close to each other. A first signal connecting piece (7) is fixedly connected to the upper end of the negative electrode connecting piece (6). A left bracket (8) is fixedly connected to one side of the first signal connecting piece (7). A battery (9) is slidably installed on the inner wall of the left bracket (8). A right bracket (10) is slidably installed on the other side of the battery (9). A positive electrode connecting piece (12) is fixedly connected to one side of the right bracket (10). A second signal connecting piece (11) is fixedly connected to the upper end of the positive electrode connecting piece (12).

4. A novel battery pack shock-absorbing internal skeleton device according to claim 2, characterized in that, The two barley paper sheets (13) are attached to one side of the first signal connecting piece (7) and the positive electrode connecting piece (12) respectively.

5. A novel battery pack shock-absorbing internal skeleton device according to claim 3, characterized in that, The left bracket (8) and the right bracket (10) are connected by a slot. The lower end of the spring (3) is fixed to the upper end of the left bracket (8) and the right bracket (10). The lower end of the button (2) is provided with a groove. The upper end of the spring (3) is slidably installed inside the groove at the lower end of the button (2). The upper end of the left bracket (8) and the right bracket (10) are fixed to the PCB board (5) by a cross screw (4).

6. A novel battery pack shock-absorbing internal skeleton device according to claim 1, characterized in that, The upper end of the PCB board (5) is provided with a first screw hole, and the inner wall of the first screw hole is threaded with a cross screw (4). The lower end of the lower cover (15) is provided with a second screw hole, and the inner wall of the second screw hole is fitted with a Torx screw (16). The upper cover (1) and the lower cover (15) are connected by Torx screws (16).

7. A novel battery pack shock-absorbing internal skeleton device according to claim 1, characterized in that, A second hole is provided through one side of the lower cover (15), and a lampshade (14) is fixed to the inner wall of the second hole.

8. A novel battery pack shock-absorbing internal skeleton device according to claim 3, characterized in that, The two sides of the barley paper (13) are in contact with the second shock absorber (21) in the side wall of the upper cover (1) and the lower cover (15), and the lower ends of the left support (8) and the right support (10) are in contact with the upper ends of multiple first shock absorbers (18).

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