Detachable battery contact piece structure

Abstract

The utility model relates to the technical field of battery contact pieces, in particular to a detachable battery contact piece structure. According to the technical scheme, the lithium battery contact piece comprises a plurality of rows of lithium batteries which are arranged in a linear mode, contact piece bodies are movably arranged at the ends of the lithium batteries, and the lithium batteries are movably sleeved with the tightening belts. The locking mechanisms are arranged at the two ends of the lacing belt and enable the lacing belt to fasten the lithium battery; and the plurality of clamping blocks are fixedly connected in the tightening belt, are linearly arranged and are clamped in the middle of the lithium battery. According to the detachable battery contact piece structure, the fastening belt, the locking mechanism, the abutting mechanism and other structures are matched, when the detachable battery contact piece structure is used, the screw and the nut are spirally connected in a sleeved mode to fasten a lithium battery, and the reset spring pushes the sliding abutting block to enable the contact piece body to be tightly attached to the lithium battery. Welding is replaced by mechanical connection, dismounting can be achieved without professional tools, operation is easy and convenient, and the risk of battery damage is reduced. And after being disassembled, the device can be recovered, so that the maintenance cost can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of battery contact sheet technology, and in particular to a detachable battery contact sheet structure. Background Technology

[0002] The voltage of a single cylindrical lithium battery is typically between 3.6V and 4.2V. However, to meet the higher voltage requirements of practical applications, multiple cylindrical lithium batteries are arranged into battery packs. A common practice is to arrange multiple single cylindrical lithium batteries neatly and then connect them in series to form a battery module by welding conductive connecting pieces (contact pieces). Disassembling these traditionally welded contact pieces requires specialized tools such as soldering irons and laser equipment, making the process cumbersome. Improper handling during this process can easily damage the batteries, create short circuit risks, and the batteries are often difficult to reassemble after disassembly, frequently resulting in the entire battery pack being unusable, significantly increasing maintenance costs. Utility Model Content

[0003] The purpose of this invention is to address the problems existing in the background technology by proposing a detachable battery contact structure.

[0004] The technical solution of this utility model is as follows: A detachable battery contact structure includes multiple rows of lithium batteries arranged in a linear pattern. The lithium batteries have contact bodies movably provided at their ends. The structure also includes: a pair of tension straps movably sleeved on the outside of the lithium batteries; a locking mechanism provided at both ends of the tension straps to secure the lithium batteries; and multiple clamping blocks fixedly connected inside the tension straps, arranged in a linear pattern and clamped in the middle of the lithium batteries. The upper surface of each clamping block is provided with a clamping mechanism arranged in a linear pattern to ensure that the contact bodies are in close contact with the ends of the lithium batteries.

[0005] Optionally, the clamping mechanism includes a support mechanism, which includes a first support frame and a second support frame fixedly connected to the clamping block. The ends of the first support frame and the second support frame are provided with telescopic grooves. A return spring is fixedly connected inside the telescopic groove, and a sliding block is fixedly connected to the end of the return spring away from the inner wall of the telescopic groove.

[0006] Optionally, the end of the sliding block away from the return spring is provided with a ball plug, and the contact plate body is provided with a plurality of positioning grooves for the ball plug to be inserted.

[0007] Optionally, the contact pad body is fixedly connected with a plurality of contact pads corresponding to the lithium battery end and the positioning groove.

[0008] Optionally, the locking mechanism includes connectors fixedly connected to both ends of the tension band, one connector at one end of the tension band having a nut embedded therein, and the other connector at the other end of the tension band having a screw movably connected to the nut. Both the tension band and the connectors are made of rubber.

[0009] Optionally, a tab is fixedly connected to one end of the contact piece body, and a protrusion is fixedly connected to the tab.

[0010] Optionally, both nuts and screws are arranged symmetrically around the tightening band.

[0011] Optionally, both the first support frame and the sliding block are made of polytetrafluoroethylene.

[0012] In summary, this application includes at least one of the following beneficial technical effects:

[0013] This invention utilizes a combination of a tightening strap, a locking mechanism, and a clamping mechanism. When using a detachable battery contact plate structure, the lithium battery is secured by a screw and nut screw-and-nut connection, and a return spring pushes a sliding block to ensure the contact plate body is firmly attached to the lithium battery. This method replaces welding with mechanical connection, allowing for disassembly without specialized tools, simplifying operation and reducing the risk of battery damage. Furthermore, the parts can be reassembled after disassembly, further reducing maintenance costs. Attached Figure Description

[0014] Figure 1 A structural schematic diagram of a detachable battery contact plate structure according to this utility model is provided;

[0015] Figure 2 for Figure 1 A schematic diagram of the split structure;

[0016] Figure 3 for Figure 2 Partial structural diagram;

[0017] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0018] Figure 5 for Figure 2 A schematic diagram of the structure of the contact plate body.

[0019] Reference numerals: 1. Lithium battery; 2. Contact plate body; 21. Positioning groove; 22. Contact pad; 3. Fastening band; 31. Clamping block; 32. Connector; 33. Nut; 34. Screw; 4. Support mechanism; 41. First support frame; 42. Second support frame; 411. Telescopic groove; 412. Return spring; 413. Sliding block; 5. Protrusion; 51. Protrusion. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0021] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0022] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a 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 a process, method, article, or apparatus. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example

[0027] like Figures 1 to 5 As shown, this utility model proposes a detachable battery contact structure, including multiple rows of lithium batteries 1 arranged in a linear pattern. A contact body 2 is movably mounted at the end of each lithium battery 1. Multiple contact pads 22, corresponding to the ends of the lithium batteries 1 and positioning grooves 21, are fixedly connected to the contact body 2. The contact pads 22 fit snugly against the ends of the lithium batteries 1, enhancing conductivity stability. A pair of tightening straps 3 are movably fitted around the lithium batteries 1. The tightening straps 3 secure the battery pack through a locking mechanism, providing structural support and fixation. Multiple clamping blocks 31, arranged in a linear pattern and clamped in the middle of the lithium batteries 1, are fixedly connected inside the tightening straps 3. The clamping blocks 31 are clamped in the middle of the lithium batteries 1, assisting in positioning the battery cells and enhancing overall stability.

[0028] Among them, such as Figures 1 to 4 As shown, the upper surface of the clamping block 31 is provided with a clamping mechanism arranged in a linear pattern to ensure that the contact piece body 2 is tightly pressed against the end of the lithium battery 1. The clamping mechanism includes a support mechanism 4, which includes a first support frame 41 and a second support frame 42 fixedly connected to the clamping block 31. The ends of the first support frame 41 and the second support frame 42 are provided with telescopic grooves 411. A return spring 412 is fixedly connected inside the telescopic groove 411. The return spring 412 pushes the sliding block 413 with elastic force to keep the contact piece body 2 in a clamped state. The end of the return spring 412 away from the inner wall of the telescopic groove 411 is fixedly connected to the sliding block 413. The sliding block 413 cooperates with the positioning groove 21 through a ball plug to transmit the thrust of the return spring 412 and ensure that the contact piece body 2 makes conductive contact. The end of the sliding block 413 away from the return spring 412 is provided with a ball plug. The ball structure of the ball plug can slide slightly in the positioning groove 21 to adapt to the slight positional deviation when the lithium battery 1 is arranged, thereby improving the compatibility and reliability of the clamping mechanism. The contact plate body 2 is provided with multiple positioning grooves 21 for the ball plug to be inserted. The positioning grooves 21 are for the ball plug of the sliding block 413 to be inserted, positioning the contact plate body 2 and assisting in pressing it.

[0029] In addition, such as Figures 1 to 4As shown, the tightening strap 3 has locking mechanisms at both ends to secure the lithium battery 1. Each locking mechanism includes a connector 32 fixedly connected to both ends of the tightening strap 3. The connector 32 serves as the mounting carrier for the locking mechanism, transmitting the tightening force of the screw 34 and nut 33. A nut 33 is embedded in one connector 32 at one end of the tightening strap 3. The nut 33 and screw 34 form the locking mechanism, tightening the tightening strap 3 through a spiral connection to achieve mechanical fixation of the lithium battery 1. A screw 34, which spirally engages with the nut 33, is movably connected to the connector 32 at the other end of the tightening strap 3. Both the nuts 33 and screw 34 are symmetrically arranged around the tightening strap 3. Both the tightening strap 3 and the connector 32 are made of rubber, an insulating material, to prevent short circuits caused by contact between the tightening strap 3 and the lithium battery 1, thus improving safety. Meanwhile, by utilizing the elasticity of rubber, the tightening band 3 can fit tightly against the surface of the lithium battery 1, and when locked by the screw 34 and nut 33, it can adapt to the cell arrangement error and enhance the fixation stability.

[0030] It is worth noting that, such as Figure 1 , Figure 2 and Figure 5 As shown, a protrusion 5 is fixedly connected to one end of the contact plate body 2. The protrusion 5 is used to connect to external circuits and extend the electrical connection interface. A protrusion 51 is fixedly connected to the protrusion 5. The protrusion 51 is provided on the protrusion 5 to increase the contact area with external circuits or to provide a plug-in positioning function.

[0031] Furthermore, such as Figures 1 to 4 As shown, the first support frame 41 and the sliding block 413 are both made of polytetrafluoroethylene (PTFE). PTFE is a highly insulating material that can prevent leakage and short circuit when the first support frame 41 and the sliding block 413 come into contact with the lithium battery 1 or the contact plate body 2, thus ensuring the electrical safety of the battery pack.

[0032] In this embodiment, when using detachable battery contact pads, multiple rows of linearly arranged lithium batteries 1 are placed, and the contact pad body 2 is movably positioned at the end of the lithium battery 1. The contact pad 22 on the contact pad body 2 is then brought into contact with the end of the lithium battery 1. A pair of tightening straps 3 are then movably fitted over the lithium battery 1. A locking mechanism consisting of connectors 32, nuts 33, and screws 34 at both ends of the tightening straps 3 is used. Rotating the screws 34 causes them to spirally engage with the nuts 33, thereby securing the lithium battery 1 and stabilizing its arrangement. Simultaneously, the clamping block 31 inside the tightening straps 3 engages in the middle of the lithium battery 1, providing further fixation.

[0033] When the clamping mechanism is running, a return spring 412 is connected to a sliding stop 413 in the telescopic groove 411 of the first support frame 41 and the second support frame 42 in the bracket mechanism 4. A ball plug is located at the end of the sliding stop 413 away from the return spring 412. This ball plug engages with the positioning groove 21 of the contact body 2. The elastic force of the return spring 412 pushes the sliding stop 413 to press the contact body 2 tightly against the end of the lithium battery 1, ensuring a good electrical connection. The protrusion 51 on the tab 5 at one end of the contact body 2 can be used to connect to an external circuit. When disassembly is required, simply unscrew the screw 34 to release the fastening strap 3, and the contact body 2 can be easily removed without welding, making it convenient, quick, and less likely to damage the battery.

[0034] The preferred embodiments of this utility model described above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A detachable battery contact tab structure comprising a plurality of rows of lithium batteries (1) arranged in a linear array, the end of the lithium battery (1) being movably provided with a contact tab body (2), characterized in that, Also includes: A pair of tightening straps (3) are movably fitted onto the outside of the lithium battery (1); Locking mechanisms are provided at both ends of the tightening band (3) to secure the lithium battery (1); Multiple clamping blocks (31) are fixedly connected inside the tightening band (3) and are arranged in a linear pattern and clamped in the middle of the lithium battery (1). The upper surface of each clamping block (31) is provided with a clamping mechanism arranged in a linear pattern that makes the contact piece body (2) fit tightly against the end of the lithium battery (1).

2. A detachable battery contact structure according to claim 1, wherein The clamping mechanism includes a support mechanism (4), which includes a first support frame (41) and a second support frame (42) fixedly connected to the clamping block (31). The ends of the first support frame (41) and the second support frame (42) are provided with telescopic grooves (411). A return spring (412) is fixedly connected inside the telescopic groove (411), and a sliding block (413) is fixedly connected to one end of the return spring (412) away from the inner wall of the telescopic groove (411).

3. A detachable battery contact structure according to claim 2, wherein The sliding block (413) has a ball plug at one end away from the return spring (412), and the contact plate body (2) has multiple positioning grooves (21) for the ball plug to be inserted.

4. A detachable battery contact structure according to claim 3, wherein Multiple contact pads (22) corresponding to the end of the lithium battery (1) and the positioning groove (21) are fixedly connected to the contact pad body (2).

5. The detachable battery contact structure of claim 1, wherein, The locking mechanism includes connectors (32) fixedly connected to both ends of the tension band (3). A nut (33) is embedded on one connector (32) at the end of the tension band (3), and a screw (34) that is screwed into the nut (33) is movably connected to the other connector (32) at the end of the tension band (3). Both the tension band (3) and the connectors (32) are made of rubber.

6. The detachable battery contact structure of claim 1, wherein, One end of the contact plate body (2) is fixedly connected to a protrusion (5), and a protrusion (51) is fixedly connected to the protrusion (5).

7. The detachable battery contact structure of claim 5, wherein, The pair of nuts (33) and screws (34) are symmetrically arranged with the tightening band (3) as the center.

8. The detachable battery contact structure of claim 2, wherein, The first support frame (41) and the sliding block (413) are both made of polytetrafluoroethylene.

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