Sodium-ion battery structure with split-type tabs

Abstract

The utility model belongs to the technical field of battery structures, and particularly relates to a tab split type sodium ion battery structure, which comprises a positive plate, a negative plate and a diaphragm, conductive plates are arranged at the top of the positive plate and the top of the negative plate, and mounting seats are arranged on one side of the positive plate and the front surface of the negative plate. Two mounting holes are formed in the top of the mounting seat, fixing structures are arranged in the mounting holes, a lug is arranged in the mounting seat, two inserting holes are formed in the top of the lug, a conductive protrusion is fixedly arranged at the bottom of the conductive plate, and the conductive protrusion is attached to the surface of the lug. The fixing structure comprises a mounting pipe fixedly connected with the mounting hole, the fixing structure is arranged, and the extrusion block is pressed to drive the positioning rod to move and enable the positioning rod to be separated from or inserted into the positioning hole, so that the pole lug can be locked and unlocked, a traditional integrally-formed pole lug is replaced, the pole lug can be quickly replaced, and the working efficiency is improved. And the use cost of the equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery structures, in particular to a tab-split sodium ion battery structure. Background Art

[0002] With the continuous development of batteries, sodium-ion batteries (Na-ion batteries) have gradually attracted attention due to the high abundance of sodium on Earth. They have a strategically important role in low-cost applications such as energy storage. Na-ion batteries not only power small portable electronic devices (e.g., mobile phones and laptops), but also provide energy for aviation, military, medical, and transportation (e.g., light power). Sodium-ion batteries have a wider application space in human production and life. Since the upper and lower tabs of the positive and negative electrodes are difficult to align in the existing technology and large errors are prone to occur, patent CN218677262U proposes "a laminated sodium-ion battery structure", in which the positive electrode sheet is designed as an integral sheet structure, and the negative electrode sheet is a plurality of sliced ​​structures. The positive electrode sheet and the negative electrode sheet are respectively arranged on the front and back sides of the diaphragm, and the positive electrode sheet, the diaphragm and the negative electrode sheet can be folded into a stacked core structure, which enables the positive electrode sheet and the diaphragm to be directly laminated and composited on the diaphragm. The tabs of the positive electrode sheet do not need to be aligned, and only the upper and lower tabs of the negative electrode sheet need to be aligned accordingly, which reduces the influence of the tab alignment operation of the positive electrode sheet on the position of the upper and lower tabs of the negative electrode sheet, and greatly improves the yield rate.

[0003] However, in this solution, the tabs are integrally formed with the positive and negative electrodes. If the tabs are damaged later, they cannot be quickly replaced, which increases the cost of using the equipment. Therefore, a tab-split sodium-ion battery structure is proposed. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a tab-split sodium ion battery structure.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a tab-split sodium-ion battery structure, comprising a positive electrode sheet, a negative electrode sheet and a diaphragm, wherein a conductive plate is provided on the top of the positive electrode sheet and the top of the negative electrode sheet, a mounting seat is provided on one side of the positive electrode sheet and the front of the negative electrode sheet, two mounting holes are provided on the top of the mounting seat, a fixing structure is provided in the mounting hole, a tab is provided in the mounting seat, and two sockets are provided on the top of the tab.

[0006] As a further description of the above technical solution:

[0007] A conductive protrusion is fixedly provided on the bottom of the conductive plate, and the conductive protrusion is in contact with the surface of the tab.

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

[0009] The fixing structure includes a mounting tube fixedly connected to the mounting hole, the inner wall of the mounting tube is provided with a plurality of positioning holes, a telescopic column is movably provided in the mounting tube, a connecting plate is fixedly provided on the top of the telescopic column, and an insertion rod is fixedly provided on the bottom of the connecting plate.

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

[0011] Two mounting cavities are provided in the telescopic column, and two through grooves and a through hole are provided on the outer wall of the telescopic column. The through grooves and the through holes are both communicated with the mounting cavity. A vertical plate is movably provided in the mounting cavity, and an extrusion block and a positioning rod are fixedly provided on one side of the vertical plate. The positioning rod is adapted to the positioning hole.

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

[0013] A plurality of sliding rods are fixedly provided in the installation cavity, and the vertical plate is movably connected to the plurality of sliding rods.

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

[0015] Two springs are fixedly provided on an inner wall of one side of the installation cavity, and the other end of the spring is fixedly connected to one side of the vertical plate.

[0016] The utility model has the following beneficial effects:

[0017] 1. Compared with the prior art, the present invention provides a tab-split sodium-ion battery structure, which is provided with a mounting tube, a positioning hole, a telescopic column, a connecting plate, a plug rod, a mounting cavity, a sliding rod, a positioning rod, an extrusion block, a vertical plate and a spring. When replacing the tab, the two sets of extrusion blocks are squeezed inward at the same time, the extrusion block drives the vertical plate, and the vertical plate drives the positioning rod. When one end of the positioning rod is out of the positioning hole, the telescopic column is pulled upward, and the telescopic column drives the connecting plate to make the plug rod out of the insertion hole. Then the tab can be removed by pulling it outward. During installation, the tab is inserted into the mounting seat, and the conductive protrusions of the two conductive plates are fitted with the tab. Then, the extrusion block is pressed and the telescopic column is pressed down. The telescopic column drives the connecting plate and the plug rod. When the plug rod is inserted into the insertion hole, the extrusion block is released, and the spring restores the position of the positioning rod to be inserted into the positioning hole to complete the installation of the tab, replacing the traditional one-piece formed tab. It can realize rapid replacement of the tab and reduce the use cost of the equipment.

[0018] 2. Compared with the existing technology, the tab-split sodium-ion battery structure is provided with a conductive plate and a conductive protrusion. After the tab is installed, the conductive protrusions of the two conductive plates fit with the tab. The provision of the conductive plate can prevent the tab from fitting loosely with the mounting base, resulting in poor contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a schematic diagram of the three-dimensional structure of a tab-split sodium-ion battery structure proposed in the present invention;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the conductive plate in the tab-split sodium ion battery structure proposed by the present invention;

[0021] Figure 3 This is a schematic diagram of the enlarged structure of part A in a tab-split sodium-ion battery structure proposed in the present invention;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of a mounting base in a tab-split sodium-ion battery structure proposed in the present invention;

[0023] Figure 5 This is a three-dimensional schematic diagram of the fixing structure in a tab-split sodium-ion battery structure proposed in the present invention;

[0024] Figure 6 This is a side cross-sectional schematic diagram of a fixed structure in a tab-split sodium-ion battery structure proposed in the present invention;

[0025] Figure 7 This is a schematic diagram of the three-dimensional structure of the tab in a tab-split sodium ion battery structure proposed in the present invention.

[0026] Legend:

[0027] 1. Positive electrode; 2. Diaphragm; 3. Negative electrode; 4. Conductive plate; 5. Mounting seat; 6. Mounting hole; 7. Fixing structure; 701. Mounting tube; 702. Positioning hole; 703. Telescopic column; 704. Connecting plate; 705. Insert rod; 706. Mounting cavity; 707. Sliding rod; 708. Positioning rod; 709. Extrusion block; 710. Vertical plate; 711. Spring; 8. Tab; 9. Socket. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Reference Figures 1 to 7The utility model provides a tab-split sodium-ion battery structure: comprising a positive electrode sheet 1, a negative electrode sheet 3 and a separator 2, a conductive plate 4 is provided on the top of the positive electrode sheet 1 and the top of the negative electrode sheet 3, a mounting seat 5 is provided on one side of the positive electrode sheet 1 and the front of the negative electrode sheet 3, two mounting holes 6 are provided on the top of the mounting seat 5, a tab 8 is provided in the mounting seat 5, and two sockets 9 are provided on the top of the tab 8;

[0030] Reference Figure 2 In order to improve the stability of the battery operation, a conductive protrusion is fixedly provided at the bottom of the conductive plate 4. The conductive protrusion fits the surface of the tab 8. After the tab 8 is installed, the conductive protrusions of the two conductive plates 4 fit the tab 8. The arrangement of the conductive plate 4 can prevent the tab 8 from fitting loosely with the mounting base 5, resulting in poor contact.

[0031] Reference Figures 5 to 6 The lock 706 of the embodiment of the present invention is a kind of locking plate 707, and the locking plate 708 of the embodiment of the present invention is a kind of locking plate 707, and the locking plate 708 of the embodiment of the present invention is a kind of locking plate 707, and the locking plate 708 of the embodiment of the present invention is a kind of locking plate 707. When the tab 8 is replaced, the two sets of extrusion blocks 709 are squeezed inward at the same time, and the extrusion blocks 709 drive the vertical plate 710, and the vertical plate 710 drives the positioning rod 708. When one end of the positioning rod 708 is out of the positioning hole 702, the telescopic column 703 is pulled upward, and the telescopic column 703 drives the connecting plate 704 to make the insertion rod 705 out of the socket 9, and then the tab 8 can be removed by pulling it outward. When installing, insert the tab 8 into the mounting seat 5 and make the two The conductive protrusion of the conductive plate 4 fits with the pole ear 8, and then the extrusion block 709 is pressed, and the telescopic column 703 is pressed down. The telescopic column 703 drives the connecting plate 704 and the insertion rod 705. When the insertion rod 705 is inserted into the socket 9, the extrusion block 709 is released, and the spring 711 restores the position of the positioning rod 708 and inserts it into the positioning hole 702 to complete the installation of the pole ear 8, replacing the traditional one-piece molded pole ear 8. It can realize the rapid replacement of the pole ear 8 and reduce the cost of using the equipment.

[0032] Working principle: The mounting base 5, the conductive plate 4 and the tab 8 are made of the same material. If the tab 8 is damaged and needs to be replaced, the two sets of extrusion blocks 709 are squeezed inward at the same time, and the extrusion blocks 709 drive the vertical plate 710. The vertical plate 710 squeezes the spring 711 on one side and drives the positioning rod 708. When one end of the positioning rod 708 is out of the positioning hole 702, the telescopic column 703 is pulled upward, and the telescopic column 703 drives the connecting plate 704. The connecting plate 704 then drives the insertion rod 705. When the insertion rod 705 is out of the socket 9, the tab 8 can be pulled outward to remove it and a new tab 8 can be installed. When inserting the tab 8 into the mounting seat 5, first insert the tab 8 into the mounting seat 5, and make the conductive protrusions of the two conductive plates 4 fit with the tab 8. The setting of the conductive plate 4 can prevent the tab 8 from fitting firmly with the mounting seat 5 and causing poor contact. Then press the extrusion block 709 again, and press the telescopic column 703 down. The telescopic column 703 drives the connecting plate 704 and the insertion rod 705. When the insertion rod 705 is inserted into the socket 9, release the extrusion block 709, and the spring 711 pushes the vertical plate 710. The vertical plate 710 drives the positioning rod 708 to be inserted into the positioning hole 702, thereby fixing the telescopic column 703 and completing the installation of the tab 8.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tab-split sodium ion battery structure, comprising a positive electrode sheet (1), a negative electrode sheet (3) and a separator (2), characterized in that: A conductive plate (4) is provided on the top of the positive electrode sheet (1) and the top of the negative electrode sheet (3); a mounting seat (5) is provided on one side of the positive electrode sheet (1) and the front of the negative electrode sheet (3); two mounting holes (6) are provided on the top of the mounting seat (5); a fixing structure (7) is provided in the mounting hole (6); a tab (8) is provided in the mounting seat (5); and two jacks (9) are provided on the top of the tab (8).

2. The tab-split sodium ion battery structure according to claim 1, characterized in that: A conductive protrusion is fixedly provided on the bottom of the conductive plate (4), and the conductive protrusion is in contact with the surface of the tab (8).

3. The tab-split sodium ion battery structure according to claim 1, characterized in that: The fixing structure (7) comprises a mounting tube (701) fixedly connected to the mounting hole (6); a plurality of positioning holes (702) are provided on the inner wall of the mounting tube (701); a telescopic column (703) is movably provided in the mounting tube (701); a connecting plate (704) is fixedly provided on the top of the telescopic column (703); and an insertion rod (705) is fixedly provided on the bottom of the connecting plate (704).

4. The tab-split sodium ion battery structure according to claim 3, characterized in that: Two mounting cavities (706) are provided in the telescopic column (703), and two through grooves and a through hole are provided on the outer wall of the telescopic column (703), and the through grooves and the through hole are both communicated with the mounting cavity (706). A vertical plate (710) is movably provided in the mounting cavity (706), and an extrusion block (709) and a positioning rod (708) are fixedly provided on one side of the vertical plate (710), and the positioning rod (708) is adapted to the positioning hole (702).

5. The tab-split sodium ion battery structure according to claim 4, characterized in that: A plurality of slide bars (707) are fixedly provided in the installation cavity (706), and the vertical plate (710) and the plurality of slide bars (707) are movably connected.

6. The tab-split sodium ion battery structure according to claim 4, characterized in that: Two springs (711) are fixedly provided on an inner wall of one side of the installation cavity (706), and the other end of the spring (711) is fixedly connected to one side of the vertical plate (710).

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