Imitation lithium battery false cell plate

Abstract

The invention provides an imitated lithium battery false cell plate which comprises a high-density fiberboard, a plurality of first mounting blind grooves and second mounting blind grooves are formed in the left side and the right side of the high-density fiberboard respectively, connecting copper blocks are clamped and embedded in the first mounting blind grooves, and tab pressing blocks are clamped and embedded in the second mounting blind grooves. The high-density fiberboard is provided with a penetrating through groove, a copper connecting strip is laid in the penetrating through groove, the two ends of the copper connecting strip are electrically connected with the connecting copper block and the tab pressing block respectively, a PC transparent board is laid on the high-density fiberboard, and the thickness of the high-density fiberboard is smaller than 3 mm. And meanwhile, on the basis of the high-density fiber material, no deformation in the formation process can be ensured, the overall thickness is reduced, battery cell plates of different models can be mutually shared, the replacement trouble of remodeling is reduced, and the time is saved.

Description

Technical Field

[0001] The invention belongs to the technical field of lithium batteries and relates to a fake lithium battery core board. Background Art

[0002] The formation machine is a critical device in the battery manufacturing process, which is mainly used for the first charge and discharge of newly produced batteries. This process is crucial to activate the chemical reaction inside the battery, form a stable SEI film (solid electrolyte interface film), and ensure the consistency and reliability of battery performance.

[0003] In the current battery manufacturing process, especially in the formation process of thin lithium batteries, traditional lithium batteries are designed to be thinner to meet the needs of product installation and use in small spaces, and the thickness is continuously reduced, resulting in varying degrees of deformation of the tab blocks and pressure plates after formation, affecting the formation effect and electrical properties of the lithium battery, as well as the troublesome operation of simply changing the type of thin lithium batteries that are used in different ways. Summary of the invention

[0004] The present invention provides a fake lithium battery cell plate, aiming to solve the problem that the existing cell plates are deformed to varying degrees due to the reduced thickness design, affecting the formation effect and electrical performance of the lithium battery, and the problem that the simple replacement of multiple types of thin lithium batteries causes troublesome operation.

[0005] To achieve the above-mentioned purpose, the present invention provides a fake lithium battery cell board, comprising a high-density fiberboard, a PC transparent board, a connecting copper block, a tab pressure block, and a copper connecting strip. A plurality of first mounting blind grooves and second mounting blind grooves are respectively provided on the left and right sides of the high-density fiberboard, a connecting copper block is snap-fitted and embedded in the first mounting blind groove, a tab pressure block is snap-fitted and embedded in the second mounting blind groove, a through groove is provided on the high-density fiberboard, a copper connecting strip is laid in the through groove, both ends of the copper connecting strip are respectively electrically connected to the connecting copper block and the tab pressure block, a PC transparent board is laid on the high-density fiberboard, and the thickness of the high-density fiberboard is less than 3 mm.

[0006] Preferably, high temperature resistant double-sided adhesive is laid between the high-density fiberboard and the PC transparent board.

[0007] Preferably, the depths of the first blind mounting groove and the second blind mounting groove are both greater than the depth of the through-groove.

[0008] Preferably, a connecting inner hole is provided on one side of the tab pressing block.

[0009] Preferably, a first slot is provided on the inner side of the upper end surface of the connecting copper block, a second slot is provided on the inner side of the upper end surface of the tab pressing block, and both ends of the copper connecting strip are flatly connected to the first slot and the second slot.

[0010] The beneficial effects of the present invention compared to the prior art are as follows: The present invention provides a lithium battery cell board. The high-density fiberboard is processed by CNC to achieve a design with a thickness of less than 3 mm. At the same time, the high-density fiberboard based on the high-density fiber material can also ensure that it will not be deformed during the formation process, so that the overall thickness is reduced. There is no need to deliberately reduce the thickness of the tab pressing block and avoid deformation during the formation process due to the reduction of the thickness of the tab pressing block, so that different types of cell boards formed can be shared with each other, reducing the trouble of changing the type and saving time.

[0011] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the main structure of the present invention; Figure 3 It is a side cross-sectional structural schematic diagram of the present invention; Figure 4 for Figure 3 A is a schematic diagram of the enlarged structure of the middle part; Figure 5 It is a schematic diagram of the decomposition structure of the present invention; Figure 6 It is a schematic diagram of the structure of the copper connecting strip of the present invention connected with the connecting copper block and the tab pressing block; Figure numerals: 1. high-density fiberboard; 2. PC transparent board; 3. connecting copper block; 4. tab pressure block; 5. first mounting blind groove; 6. second mounting blind groove; 7. through-groove; 8. high-temperature resistant double-sided tape; 9. connecting inner hole; 10. first groove piece; 11. second groove piece; 12. copper connecting strip. DETAILED DESCRIPTION

[0013] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0014] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0015] To achieve the above purpose, the embodiment of the present invention provides a lithium battery imitation battery core board, referring to Figure 1-6 As shown, it includes a high-density fiberboard 1, a PC transparent board 2PC, a connecting copper block 3, a tab pressing block 4, and a copper connecting strip 12. A plurality of first mounting blind grooves 5 and a second mounting blind groove 6 are respectively provided on the left and right sides of the high-density fiberboard 1. The connecting copper block 3 is snap-fitted and embedded in the first mounting blind groove 5, and the tab pressing block 4 is snap-fitted and embedded in the second mounting blind groove 6. A through groove 7 is provided on the high-density fiberboard 1, and a copper connecting strip 12 is laid in the through groove 7. The two ends of the copper connecting strip 12 are respectively electrically connected to the connecting copper block 3 and the tab pressing block 4. A PC transparent board 2PC is laid on the high-density fiberboard 1. The thickness of the high-density fiberboard 1 is less than 3 mm.

[0016] As an engineering material, high-density fiberboard 1 (HDF) has the characteristics of high strength, stability and durability, and can be used in lithium battery applications. High-density fiberboard 1 has high compressive and flexural strength, is not easy to expand or shrink, can withstand large mechanical stress and is not easy to deform or break, and well protects the tab block 4 to ensure that the battery board does not deform during the formation process. Through CNC numerical control processing, the thickness of the high-density fiberboard 1 can be processed to less than 3mm. Moreover, the material of the high-density fiberboard 1 is high-density fiber material, and the formation processing will not cause deformation of the tab block 4.

[0017] PC transparent board 2PC refers to polycarbonate (PC) board, which is a transparent or translucent plastic board made of polycarbonate resin. After being pressed, the tab pressing block 4 will not stick and can be easily disassembled and replaced.

[0018] Furthermore, a high-temperature resistant double-sided tape 8 is laid between the high-density fiberboard 1 and the PC transparent board 2PC, the depths of the first mounting blind groove 5 and the second mounting blind groove 6 are both higher than the depth of the through groove 7, a connecting inner hole 9 is provided on one side of the tab pressing block 4, a first groove sheet 10 is provided on the inner side of the upper end surface of the connecting copper block 3, a second groove sheet 11 is provided on the inner side of the upper end surface of the tab pressing block 4, and both ends of the copper connecting strip 12 are flatly connected to the first groove sheet 10 and the second groove sheet 11.

[0019] In this embodiment, the high-density fiberboard 1 is first processed by CNC to form a first mounting blind groove 5, a second mounting blind groove 6 and a through groove 7, wherein the two ends of the through groove 7 are respectively processed through the first mounting blind groove 5 and the second mounting blind groove 6, and then the connecting copper block 3 and the pole ear pressing block 4 are respectively installed in the first mounting blind groove 5 and the second mounting blind groove 6, and the copper connecting strip 12 is correspondingly installed in the through groove 7, so as to form a conduction between the connecting copper block 3 and the pole ear pressing block 4, and finally covered with high-temperature resistant double-sided tape 8, and bonded and covered with PC transparent plate 2PC to form a lithium battery cell board for processing in a forming machine.

[0020] The forming machine arranges multiple processed lithium battery cell boards one by one on the jig clamping frame of the forming machine. The pole ear pressing block 4 of each lithium battery cell board is connected to the corresponding conductive plate on the forming machine. Pressure springs are evenly arranged between two adjacent jig clamping frames. Pressure is applied by the press on the forming machine to press the multiple lithium battery cell boards tightly without causing them to deform.

[0021] In summary, the present invention provides a lithium battery cell board, which is designed with a thickness of less than 3 mm through CNC processing of a high-density fiberboard 1. At the same time, the high-density fiberboard 1 based on the high-density fiber material can also ensure that it will not be deformed during the formation process, resulting in a reduction in the overall thickness. There is no need to deliberately reduce the thickness of the pole ear pressing block 4 and avoid deformation during the formation process due to reducing the thickness of the pole ear pressing block 4, so that different types of cell boards formed can be shared with each other, reducing the trouble of changing the model and saving time. The high-strength fiber material has enough hardness and will not be deformed. The PC transparent board 2PC has a suitable hardness and will not stick to the pole ear pressing block 4, which is easy to replace and change, thereby improving the problem that the small space of the formation machine is not easy to replace, handle and operate.

[0022] The technical principle of the present invention is described above in combination with the specific embodiments, which are only preferred implementations of the present invention. The protection scope of the present invention is not limited to the above embodiments, and all technical solutions under the idea of ​​the present invention belong to the protection scope of the present invention. Those skilled in the art can associate other specific implementations of the present invention without creative work and all fall within the protection scope of the present invention.

Claims

1. A fake lithium battery core board, characterized in that: It includes a high-density fiberboard, a PC transparent board, a connecting copper block, a tab pressure block, and a copper connecting strip. A plurality of first mounting blind grooves and second mounting blind grooves are respectively provided on the left and right sides of the high-density fiberboard. A connecting copper block is snap-fitted and embedded in the first mounting blind groove, and a tab pressure block is snap-fitted and embedded in the second mounting blind groove. A through-through groove is provided on the high-density fiberboard, and a copper connecting strip is laid in the through-through groove. Both ends of the copper connecting strip are respectively electrically connected to the connecting copper block and the tab pressure block. A PC transparent board is laid on the high-density fiberboard, and the thickness of the high-density fiberboard is less than 3 mm.

2. The imitation lithium battery fake core board according to claim 1, characterized in that: High temperature resistant double-sided adhesive is laid between the high-density fiberboard and the PC transparent board.

3. The imitation lithium battery fake core board according to claim 1, characterized in that: The depths of the first blind mounting groove and the second blind mounting groove are both greater than the depth of the through-groove.

4. The imitation lithium battery fake core board according to claim 1, characterized in that: A connecting inner hole is provided on one side of the tab pressing block.

5. The imitation lithium battery fake core board according to claim 1, characterized in that: A first slot is disposed inside the upper end surface of the connecting copper block, a second slot is disposed inside the upper end surface of the tab pressing block, and both ends of the copper connecting strip are flattened and connected to the first slot and the second slot.

Images