Lithium battery electrode plate

Abstract

The utility model discloses an electrode plate of a lithium battery, which belongs to the field of lithium batteries and comprises an electrode plate body and a connecting plate, the electrode plate body and the connecting plate are connected through a locking mechanism, the locking mechanism comprises a mounting block arranged on the connecting plate, a mounting shell is arranged on the electrode plate body, a plug-in groove is arranged in the mounting shell, and the plug-in groove is connected with the connecting plate. An embedded block is fixed to the side face, close to the mounting shell, of the mounting block and inserted into the inserting groove. Through the arrangement of the locking mechanism, stable and detachable connection between the electrode plate body and the connecting plate is achieved, after the embedded block is inserted into the inserting groove, the extrusion plate and the inclined plate interact, and due to the fact that the extrusion plate is made of elastic materials and deforms under extrusion of the inclined plate, certain pre-tightening force is provided; and meanwhile, the buckling sheets are buckled with the inclined sheets, so that the stability of the connection is further enhanced.

Description

Technical Field

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

[0002] In the field of lithium battery technology, the connection method between electrode plates and connecting plates plays a key role in the overall performance, maintenance cost and service life of the battery. At present, most lithium battery electrode plates and connecting plates adopt permanent connection methods such as welding. Although this connection method can ensure the stability and integrity of the battery under normal working conditions, making the battery structure compact and the current conduction relatively stable.

[0003] However, its drawbacks are also quite significant. When individual electrode plates in the battery pack experience performance degradation or complete failure due to various reasons, such as manufacturing defects, aging caused by long-term use, or damage caused by overcharging and over-discharging, the entire battery pack often needs to be disassembled and all electrode plates replaced because the electrode plates and connecting plates are tightly connected by welding. This process not only consumes a lot of manpower, material resources, and time, resulting in extremely high costs, but also causes serious waste of resources. For example, in electric vehicle battery packs, the failure of one electrode plate may lead to the replacement of the entire battery module, which greatly increases the cost of using electric vehicles and the difficulty of maintenance. Utility Model Content

[0004] The purpose of this invention is to address the problem that in the existing technology, lithium battery electrode plates and connecting plates are mostly connected by permanent methods such as welding. When individual electrode plates in the battery pack experience performance degradation or complete failure due to various reasons, such as manufacturing defects, aging caused by long-term use, or damage caused by overcharging and over-discharging, the entire battery pack often needs to be disassembled and all electrode plates replaced because the electrode plates and connecting plates are tightly connected by welding. This process not only consumes a lot of manpower, material resources, and time, resulting in extremely high costs, but also causes serious waste of resources. For example, in electric vehicle battery packs, the failure of one electrode plate may lead to the replacement of the entire battery module, which greatly increases the use cost and maintenance difficulty of electric vehicles. Therefore, this invention proposes a lithium battery electrode plate.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A lithium battery electrode sheet includes an electrode sheet body and a connecting piece. The electrode sheet body and the connecting piece are connected by a locking mechanism. The locking mechanism includes a mounting block disposed on the connecting piece. The electrode sheet body is provided with a mounting shell. An insertion groove is formed in the mounting shell. An embedding block is fixed on the side of the mounting block near the mounting shell. The embedding block is inserted into the insertion groove.

[0007] Preferably, the locking mechanism further includes inclined plates fixed to the two side walls of the insertion slot, and a compression plate is fixed on the embedded block, the compression plate being made of an elastic material.

[0008] Preferably, a fastening piece is fixed to the end of the extrusion piece. The fastening piece is made of an elastic material, and the end of the fastening piece is fastened to the inclined piece.

[0009] Preferably, a micro magnet is fixed to the side of the fastening piece near the inclined piece, and a micro magnet is fixed to the side of the inclined piece near the fastening piece, wherein the micro magnet is magnetically attracted to the micro magnet.

[0010] Preferably, both the electrode body and the connecting piece are equipped with a mounting mechanism for limiting the mounting block and the mounting shell. The mounting mechanism includes a rectangular block fixed on the mounting block and the mounting shell, and the rectangular block and the electrode body and the connecting piece are provided with threaded holes that are compatible with each other.

[0011] Preferably, a screw is threaded into the threaded hole.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The locking mechanism enables a stable and detachable connection between the electrode plate and the connecting plate. When the insert block is inserted into the insertion slot, the extrusion plate and the inclined plate interact. Since the extrusion plate is made of elastic material, it deforms under the pressure of the inclined plate, providing a certain pre-tightening force to ensure that the insert block will not easily come out of the insertion slot. At the same time, the fastening plate and the inclined plate fasten together, further enhancing the stability of the connection. The magnetic attraction between micromagnet one and micromagnet two further strengthens the connection between the fastening plate and the inclined plate at the micro level. This entire locking mechanism allows the electrode plate and the connecting plate to withstand greater external forces without separation during normal battery operation, ensuring the electrical connection stability of the battery and thus ensuring stable battery performance. Furthermore, when it is necessary to replace the electrode plate, the electrode plate and the connecting plate can be easily separated by overcoming the forces of the extrusion plate, the fastening plate, and the micromagnets with appropriate external force. The operation is simple and convenient, greatly improving the efficiency of electrode plate replacement.

[0014] 2. The installation mechanism provides precise positioning for the mounting block and mounting shell. During installation, aligning the rectangular block with the threaded hole and then screwing in the screw ensures that the mounting block and mounting shell are accurately positioned on the electrode plate and connecting plate. This precise positioning ensures that the embedded block and the insertion slot in the locking mechanism are perfectly aligned, allowing the locking mechanism to function better and enhancing the reliability of the connection between the electrode plate and the connecting plate. On the other hand, the standardized installation mechanism facilitates quick positioning and installation during battery assembly and maintenance, improving the production and maintenance efficiency of the battery pack. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a lithium battery electrode sheet proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the mounting shell for a lithium battery electrode sheet proposed in this utility model.

[0017] Figure 3 This utility model proposes a lithium battery electrode sheet. Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0018] Figure 4 This is a front view schematic diagram of the electrode sheet body and connecting piece structure of a lithium battery electrode sheet proposed in this utility model.

[0019] In the figure: 1. Electrode body; 2. Connecting piece; 31. Mounting block; 32. Mounting shell; 33. Insertion groove; 34. Embedding block; 35. Angled piece; 36. Extrusion piece; 37. Fastening piece; 38. Micro magnet one; 39. Micro magnet two; 40. Rectangular block; 41. Threaded hole; 42. Screw. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] Example 1

[0022] Reference Figures 1-4 A lithium battery electrode sheet includes an electrode sheet body 1 and a connecting piece 2. The electrode sheet body 1 and the connecting piece 2 are connected by a locking mechanism. The locking mechanism includes a mounting block 31 disposed on the connecting piece 2. The electrode sheet body 1 is provided with a mounting shell 32. An insertion groove 33 is opened in the mounting shell 32. An embedding block 34 is fixed on the side of the mounting block 31 near the mounting shell 32. The embedding block 34 is inserted into the insertion groove 33.

[0023] Furthermore, the locking mechanism also includes inclined plates 35 fixed to the two side walls of the insertion slot 33, and a compression plate 36 fixed on the embedded block 34, the compression plate 36 being made of an elastic material.

[0024] Furthermore, a fastening piece 37 is fixed to the end of the extrusion piece 36. The fastening piece 37 is made of elastic material, and the end of the fastening piece 37 is fastened to the inclined piece 35.

[0025] Furthermore, a miniature magnet 38 is fixed to the side of the fastening piece 37 near the oblique piece 35, and a miniature magnet 39 is fixed to the side of the oblique piece 35 near the fastening piece 37. The miniature magnet 38 and the miniature magnet 39 are magnetically attracted to each other.

[0026] In practical applications of lithium battery electrode sheets, when it is necessary to replace the electrode sheet body 1, the battery pack is first powered off to ensure operational safety. Technicians focus their attention on the connection between the electrode sheet body 1 and the connecting piece 2. Due to the locking mechanism, the forces of the pressing piece 36, the fastening piece 37, and the micro-magnets must be overcome. Technicians use a special small tool to gently pry open the fastening part of the fastening piece 37 and the inclined piece 35, separating them. During this process, because the pressing piece 36 is an elastic material, it deforms further under external force, reducing the binding force on the embedded block 34. Simultaneously, the magnetic attraction of the micro-magnets 38 and 39 is also overcome by the tool. As the fastening piece 37 and the inclined piece 35 separate... The insert block 34 is no longer subject to additional locking force, and technicians can easily pull the insert block 34 out of the insertion slot 33, thereby successfully separating the electrode body 1 from the connecting piece 2. When replacing the new electrode body 1, align the insertion slot 33 of the mounting shell 32 on the new electrode with the insert block 34 of the mounting block 31 on the connecting piece 2, and slowly insert it. During the insertion process, the extrusion piece 36 and the inclined piece 35 press against each other, the extrusion piece 36 deforms and provides pre-tightening force. When the insert block 34 is fully inserted into the insertion slot 33, the fastening piece 37 automatically engages with the inclined piece 35, and the micro magnet 1 38 and micro magnet 2 39 also quickly attract each other magnetically, completing the replacement of the electrode and ensuring that the electrode body 1 and the connecting piece 2 are firmly connected in subsequent use of the battery, thus ensuring the stable electrical performance of the battery.

[0027] Based on Example 1, Example 2:

[0028] Reference Figures 1-4 ,

[0029] Furthermore, both the electrode body 1 and the connecting piece 2 are equipped with mounting mechanisms for limiting the mounting block 31 and the mounting shell 32. The mounting mechanism includes a rectangular block 40 fixed on the mounting block 31 and the mounting shell 32. The rectangular block 40 and the electrode body 1 and the connecting piece 2 are provided with threaded holes 41 that are compatible with each other.

[0030] Furthermore, a screw 42 is connected to the internal thread of the threaded hole 41.

[0031] When workers on the production line assemble the electrode body 1 and the connecting piece 2, they first place the mounting block 31 and the mounting shell 32 in their predetermined positions on the connecting piece 2 and the electrode body 1, respectively. At this time, the rectangular blocks 40 on the mounting block 31 and the mounting shell 32 are aligned with the threaded holes 41 on the connecting piece 2 and the electrode body 1. Workers use an electric screwdriver to quickly screw the screws 42 into the threaded holes 41. Due to the precise fit between the rectangular blocks 40 and the threaded holes 41, the mounting block 31 and the mounting shell 32 can be accurately installed in their predetermined positions, ensuring the normal operation of the subsequent locking mechanism. During subsequent battery pack maintenance, when it is necessary to inspect or replace an electrode, maintenance personnel only need to use a screwdriver to unscrew the screws 42 to remove the mounting block 31 and the mounting shell 32 from the electrode body 1 and the connecting piece 2, making it convenient to operate the locking mechanism and thus replace the electrode. This standardized installation mechanism greatly improves the production efficiency and maintenance convenience of lithium battery packs and reduces production and maintenance costs.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A lithium battery electrode sheet comprising an electrode sheet body (1) and a tab (2), characterized in that, The electrode sheet body (1) and the connecting sheet (2) are connected through a locking mechanism, the locking mechanism comprises a mounting block (31) arranged on the connecting sheet (2), the electrode sheet body (1) is provided with a mounting shell (32), the mounting shell (32) is provided with a plug-in slot (33), the side of the mounting block (31) close to the mounting shell (32) is fixed with an embedded block (34), and the embedded block (34) is plugged into the plug-in slot (33).

2. The lithium battery electrode sheet of claim 1, wherein, The locking mechanism further comprises an inclined sheet (35) fixed on the two side walls of the plug-in slot (33), the embedded block (34) is fixed with a pressing sheet (36), and the pressing sheet (36) is made of elastic material.

3. The lithium battery electrode sheet of claim 2, wherein, The end of the pressing sheet (36) is fixed with a buckling sheet (37), the buckling sheet (37) is made of elastic material, and the end of the buckling sheet (37) is buckled with the inclined sheet (35).

4. The lithium battery electrode sheet of claim 3, wherein, The side of the buckling sheet (37) close to the inclined sheet (35) is fixed with a micro magnet (38), the side of the inclined sheet (35) close to the buckling sheet (37) is fixed with a micro magnet (39), and the micro magnet (38) and the micro magnet (39) are magnetically attracted.

5. The lithium battery electrode sheet of claim 1, wherein, The electrode sheet body (1) and the connecting sheet (2) are provided with mounting mechanisms for limiting the mounting block (31) and the mounting shell (32), the mounting mechanism comprises a rectangular block (40) fixed on the mounting block (31) and the mounting shell (32), and the rectangular block (40) is provided with a threaded hole (41) matched with the electrode sheet body (1) and the connecting sheet (2).

6. The lithium battery electrode sheet of claim 5, wherein, The threaded hole (41) is screwed with a screw (42).

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