Clamp for batched sodium supplement of battery pole pieces

By designing a fixture for batch sodium replenishment of battery pole pieces, using a three-layer board assembly structure and threaded rod fixing method, the problems of low sodium replenishment of sodium ion battery pole pieces are solved, and efficient and stable sodium replenishment treatment for multiple pole pieces is achieved.

CN222980547UActive Publication Date: 2025-06-13XIAMEN THREE CIRCLES BATTERY CO LTD
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Patent Information

Application Number
CN202421982137.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-15
Publication Date
2025-06-13
Estimated Expiration
2034-08-15

AI Technical Summary

Technical Problem

The prior art is difficult to achieve efficient sodium supplementation by batching sodium ion battery pole tablets, resulting in low sodium supplementation efficiency and poor stability, and it is difficult for the same batch of sodium supplementation effects to achieve the same degree of sodium supplementation effect.

Method used

A fixture for batch sodium replenishment of battery pole sheets is designed, and a three-layer board assembly structure is adopted, including an upper plate, a middle plate and a lower plate. It is equipped with a battery pole sheet placement groove and a fixing groove. By installing threaded rods and nuts, the sodium replenishment treatment is achieved while multiple battery pole sheets are simultaneously replenished.

Benefits of technology

It achieves efficient sodium supplementation in batches of sodium ion battery poles, improves sodium supplement efficiency and stability, and ensures that the same batch of poles can achieve the same degree of sodium supplementation effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a clamp for batched sodium supplement of battery pole pieces. The clamp comprises an upper-layer plate, a middle-layer plate, a lower-layer plate, mounting threaded rods and mounting nuts, a plurality of upper-layer plate mounting holes are formed in the upper-layer plate, a plurality of middle-layer plate mounting holes or lower-layer plate mounting holes are formed in the middle-layer plate and the lower-layer plate respectively, the upper-layer plate mounting holes, the middle-layer plate mounting holes and the lower-layer plate mounting holes correspond to one another, and mounting threaded rods extend out of the lower-layer plate mounting holes, the middle-layer plate mounting holes and the upper-layer plate mounting holes. The mounting nut is used for fixing; the middle-layer plate is also provided with a plurality of battery pole piece placing grooves for placing battery pole pieces, and the battery pole pieces are pressed and fixed through the upper-layer plate and the lower-layer plate. According to the utility model, the sodium ion battery pole pieces can be supplemented with sodium in batches in an inorganic or organic sodium pre-treatment reagent, and a plurality of pole pieces can be processed at the same time, so that the efficient sodium supplementing effect on the sodium ion battery pole pieces in batches is realized.
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Description

Technical Field

[0001] The utility model relates to the technical field of battery production and processing, in particular to a fixture for batch sodium supplementation of battery electrode sheets. Background Art

[0002] Due to reasons such as sodium deficiency in the positive electrode, pre-sodium in the negative electrode, and recycling of waste electrode sheets of sodium-ion batteries, in order to further improve their electrochemical performance and reduce costs, it is necessary to develop devices and methods for directly supplementing sodium to the positive and negative electrode sheets of the battery. For example, Prussian blue materials and their derivatives can be used as the positive electrode materials of sodium-ion batteries. Since they are synthesized in a liquid phase environment, residual crystal water in the crystal lattice will occupy sodium ion sites, resulting in a low sodium ion content and an increase in material defects, thus leading to a low first-cycle Coulombic efficiency and poor cycle stability of sodium-ion batteries. Another example is that in order to improve the first-cycle Coulombic efficiency of the hard carbon negative electrode, pre-sodiation treatment of the negative electrode is required. The sodium content of the discarded positive electrode sheets of sodium-ion batteries is often low. If the waste positive electrode sheets can be directly supplemented with sodium, the supplemented positive electrode sheets can be recycled and assembled into new batteries, which is a green and environmentally friendly recycling process. The methods used in the prior art to increase the sodium ion content of the positive electrode sheets of sodium-ion batteries usually involve soaking single electrode sheets in inorganic or organic pre-sodiation reagents for sodium supplementation. The above treatment methods will result in low sodium supplementation efficiency of the battery electrode sheets, and it is difficult to obtain the same degree of sodium supplementation effect for the electrode sheets in the same batch, that is, it is difficult for each electrode sheet to supplement the same amount of sodium ions. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a fixture for batch sodium supplementation of battery electrode sheets, so as to process multiple battery electrode sheets simultaneously, improve the sodium supplementation efficiency of the battery electrode sheets in the same batch, and the stability of sodium supplementation of the battery electrode sheets. To achieve the above purpose, the utility model adopts the following technical solutions:

[0004] The utility model discloses a fixture for batch sodium supplementation of battery electrode sheets, including: an upper layer plate, a middle layer plate, a lower layer plate, a mounting threaded rod, and a mounting nut.

[0005] The upper layer plate is provided with a plurality of upper layer plate mounting holes, the middle layer plate and the lower layer plate are respectively provided with a plurality of middle layer plate mounting holes or lower layer plate mounting holes, the upper layer plate mounting holes, the middle layer plate mounting holes, and the lower layer plate mounting holes correspond to each other, the mounting threaded rod extends out from the lower layer plate mounting hole, the middle layer plate mounting hole, and the upper layer plate mounting hole, and is fixed by the mounting nut.

[0006] The middle layer plate is further provided with a plurality of battery electrode sheet placement grooves for placing battery electrode sheets, and the battery electrode sheets are pressed and fixed by the upper layer plate and the lower layer plate.

[0007] Further, the battery electrode placement groove has a serrated notch, and a number of protrusions are provided in the serrated notch to separate the battery electrodes.

[0008] Preferably, there are 2 - 4 serrated notches distributed on the middle layer plate, and each serrated notch can hold 8 - 30 battery electrodes.

[0009] In some other embodiments, the battery electrode placement groove is composed of a number of independent battery electrode placement grooves. The independent battery electrode placement grooves are distributed in 2 - 4 columns on the middle layer plate, and 8 - 30 are provided in each column.

[0010] Further, the upper layer plate is also provided with a number of first battery electrode fixing grooves. The first battery electrode fixing grooves correspond to the battery electrode placement grooves, and the width of the first battery electrode fixing grooves is less than the diameter of the battery electrode to limit the position of the battery electrode in the vertical direction and allow the battery electrode to fully contact the pre - sodium solution.

[0011] Preferably, a first battery electrode fixing strip is provided in the middle of each of the first battery electrode fixing grooves on the upper layer plate to further limit the position of the battery electrode in the vertical direction.

[0012] Further, the lower layer plate is also provided with a number of second battery electrode fixing grooves. The second battery electrode fixing grooves correspond to the battery electrode placement grooves, and the width of the second battery electrode fixing grooves is less than the diameter of the battery electrode to limit the position of the battery electrode in the vertical direction and allow the battery electrode to fully contact the pre - sodium solution.

[0013] Preferably, a second battery electrode fixing strip is provided in the middle of each of the second battery electrode fixing grooves on the lower layer plate to further limit the position of the battery electrode in the vertical direction.

[0014] Further, the fixture for batch - wise sodium supplementation of battery electrodes further includes: a hand - held threaded rod and a fixing nut. The upper layer plate, the middle layer plate, and the lower layer plate are respectively provided with hand - held threaded rod mounting holes at their centers. The hand - held threaded rod extends out from the hand - held threaded rod mounting holes and is fixed by the fixing nut.

[0015] Preferably, the length of the hand - held threaded rod is longer than the length of the mounting threaded rod.

[0016] After adopting the above - mentioned technical solution, the present utility model has the following effects:

[0017] 1. The present utility model is provided with a plurality of battery electrode placement grooves in the middle layer plate, which can simultaneously perform sodium supplementation treatment on a plurality of sodium - ion battery electrodes, realizing batch - wise sodium supplementation of sodium - ion battery electrodes in inorganic or organic pre - sodiumation reagents.

[0018] 2. The utility model adopts an assembled structure of three-layer plates, which can fully immerse the sodium-ion battery electrode plates for sodium supplementation in inorganic or organic pre-sodium reagents, realizing the efficient sodium supplementation for a batch of sodium-ion battery electrode plates.

[0019] 3. The three-layer plates of the utility model are detachably installed. It can not only meet the need of sodium supplementation for sodium-ion battery electrode plates of different sizes by changing the size of the three-layer plates, but also install a multi-layer three-layer plate structure by replacing longer installation threaded rods to meet the sodium supplementation operation for a larger batch of sodium-ion battery electrode plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structure diagram of the utility model.

[0021] Figure 2 It is a bottom view of the utility model.

[0022] Figure 3 It is an exploded view of the structure of the three-layer plates of the utility model.

[0023] Figure 4 It is a three-dimensional structure diagram of the upper layer plate of the utility model.

[0024] Figure 5 It is a three-dimensional structure diagram of the middle layer plate of the utility model.

[0025] Figure 6 It is a three-dimensional structure diagram of the middle layer plate of the second embodiment of the utility model.

[0026] Figure 7 It is a three-dimensional structure diagram of the lower layer plate of the utility model.

[0027] MAIN COMPONENT SYMBOLS:

[0028] 1: Upper layer plate, 11: Upper layer plate mounting hole, 12: First battery electrode plate fixing groove, 13: First battery electrode plate fixing strip, 14: First hand-held threaded rod mounting hole, 2: Middle layer plate, 21: Middle layer plate mounting hole, 22: Serrated notch, 23: Protrusion, 24: Second hand-held threaded rod mounting hole, 25: Independent battery electrode plate placement groove, 3: Lower layer plate, 31: Lower layer plate mounting hole, 32: Second battery electrode plate fixing groove, 33: Second battery electrode plate fixing strip, 34: Third hand-held threaded rod mounting hole, 4: Mounting threaded rod, 5: Mounting nut, 6: Hand-held threaded rod, 7: Fixing nut, 8: Battery electrode plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] In order to make the purpose, technical solutions and advantages of the utility model more clear and understandable, the following further details the utility model in conjunction with the drawings and embodiments.

[0030] Embodiment 1

[0031] As Figure 1 shown, the utility model discloses a fixture for batch sodium supplementation of battery electrodes, comprising: an upper layer plate 1, a middle layer plate 2, a lower layer plate 3, a mounting screw rod 4 and a mounting nut 5.

[0032] The upper layer plate 1 is provided with a plurality of upper layer plate mounting holes 11, the middle layer plate 2 and the lower layer plate 3 are respectively provided with a plurality of middle layer plate mounting holes 21 or lower layer plate mounting holes 31, the upper layer plate mounting holes 11, the middle layer plate mounting holes 21 and the lower layer plate mounting holes 31 correspond to each other, the mounting screw rod 4 extends out from the lower layer plate mounting hole 31, the middle layer plate mounting hole 21 and the upper layer plate mounting hole 11, and is fixed by the mounting nut 5.

[0033] The middle layer plate 2 is further provided with a plurality of battery electrode placement grooves for placing battery electrodes, and the battery electrodes are pressed and fixed by the upper layer plate 1 and the lower layer plate 3.

[0034] In this embodiment, the upper layer plate 1, the middle layer plate 2 and the lower layer plate 3 are rectangular plates, and the upper layer plate mounting holes 11, the middle layer plate mounting holes 21 or the lower layer plate mounting holes 31 are respectively arranged at the four corners of the upper layer plate 1, the middle layer plate 2 and the lower layer plate 3. Secondly, in this embodiment, the lower layer plate 3 and the middle layer plate 2 are adjusted to a suitable height through the mounting screw rod 4, the battery electrode 8 is vertically placed in the battery electrode placement groove of the middle layer plate 2, then the upper layer plate 1 is adjusted to a suitable height by sequentially adjusting the mounting screw rod 4, and is fixed by the mounting nut 5.

[0035] In addition, as Figure 3 and Figure 5 shown, in this embodiment, the battery electrode placement groove is a serrated notch 22, and a plurality of protrusions 23 are arranged in the serrated notch 22 to separate the battery electrodes 8. The serrated notches 22 are distributed on the middle layer plate 2 in 2 - 4 strips, and each strip can place 8 - 30 battery electrodes 8.

[0036] As Figure 3 and Figure 4 shown, the upper layer plate 1 is further provided with a plurality of first battery electrode fixing grooves 12, the first battery electrode fixing grooves 12 correspond to the battery electrode placement grooves, and the width of the first battery electrode fixing grooves 12 is smaller than the diameter of the battery electrode 8 to limit the position of the battery electrode in the vertical direction and allow the battery electrode 8 to fully contact the pre - sodium solution.

[0037] In this embodiment, a first battery electrode fixing strip 13 is arranged in the middle of each first battery electrode fixing groove 12 of the upper layer plate 1 to further limit the position of the battery electrode 8 in the vertical direction.

[0038] As Figure 3 and Figure 7As shown, the lower layer plate 3 is also provided with a plurality of second battery electrode fixing grooves 32, the second battery electrode fixing grooves 32 correspond to the battery electrode placement grooves, and the width of the second battery electrode fixing grooves 32 is smaller than the diameter of the battery electrode 8 to limit the position of the battery electrode in the vertical direction and allow the battery electrode 8 to fully contact the pre-sodium solution.

[0039] In this embodiment, the lower layer plate 3 is provided with second battery electrode fixing bars 33 in the middle of each second battery electrode fixing groove 32 to further limit the position of the battery electrode 8 in the vertical direction.

[0040] In addition, as Figure 1 and Figure 2 shown, in this embodiment, the fixture for batch sodium supplementation of battery electrodes further includes: a hand-held threaded rod 6 and a fixing nut 7. The upper layer plate 1, the middle layer plate 2 and the lower layer plate 3 are respectively provided with a first hand-held threaded rod mounting hole 14, a second hand-held threaded rod mounting hole 23 or a third hand-held threaded rod mounting hole 34 at their centers. The hand-held threaded rod 6 extends out of the hand-held threaded rod mounting holes of the three-layer plates in sequence and is fixed by the fixing nut 7.

[0041] And, in this embodiment, the length of the hand-held threaded rod 6 is longer than the length of the mounting threaded rod 4.

[0042] Embodiment 2

[0043] The difference between this embodiment and Embodiment 1 lies in the different battery electrode placement grooves.

[0044] As Figure 6 shown, in this embodiment, the battery electrode placement groove is composed of a plurality of independent battery electrode placement grooves 25. The independent battery electrode placement grooves 25 are distributed in 2 - 4 columns on the middle layer plate 2, and 8 - 30 are arranged in each column.

[0045] The above is only the preferred specific embodiment of the present utility model. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A fixture for batch sodium supplementation of battery pole pieces, characterized in that: include: An upper plate (1), a middle plate (2), a lower plate (3), a mounting threaded rod (4) and a mounting nut (5); The upper plate (1) is provided with a plurality of upper plate mounting holes (11), the middle plate (2) and the lower plate (3) are respectively provided with a plurality of middle plate mounting holes (21) or lower plate mounting holes (31), the upper plate mounting holes (11), the middle plate mounting holes (21) and the lower plate mounting holes (31) correspond to each other, the mounting threaded rod (4) extends from the lower plate mounting holes (31), the middle plate mounting holes (21) and the upper plate mounting holes (11), and is fixed by the mounting nuts (5); The middle plate (2) is also provided with a plurality of battery pole piece placement grooves for placing battery pole pieces, and the battery pole pieces are pressed and fixed by the upper plate (1) and the lower plate (3).

2. A fixture for batch sodium supplementation of battery pole pieces as claimed in claim 1, characterized in that: The battery pole piece placement groove is a sawtooth-shaped notch (22), and a plurality of protrusions (23) are arranged in the sawtooth-shaped notch (22) to separate the battery pole pieces.

3. A fixture for batch sodium supplementation of battery pole pieces as claimed in claim 2, characterized in that: There are 2 to 4 sawtooth-shaped notches (22) distributed on the middle plate (2), and each notch can hold 8 to 30 battery pole pieces.

4. A fixture for batch sodium supplementation of battery pole pieces as claimed in claim 1, characterized in that: The battery pole piece placement slots are composed of a plurality of independent battery pole piece placement slots (25), and the independent battery pole piece placement slots (25) are distributed in 2-4 rows on the middle plate (2), with 8-30 independent battery pole piece placement slots in each row.

5. A fixture for batch sodium supplementation of battery pole pieces as claimed in claim 2, characterized in that: The upper plate (1) is further provided with a plurality of first battery electrode sheet fixing grooves (12), the first battery electrode sheet fixing grooves (12) corresponding to the battery electrode sheet placement grooves, and the width of the first battery electrode sheet fixing grooves (12) is smaller than the diameter of the battery electrode sheet so as to limit the vertical position of the battery electrode sheet and allow the battery electrode sheet to fully contact the pre-sodium solution.

6. A fixture for batch sodium supplementation of battery pole pieces as claimed in claim 5, characterized in that: The upper plate (1) is provided with a first battery electrode fixing strip (13) in the middle of each of the first battery electrode fixing grooves (12) to further limit the position of the battery electrode in the vertical direction.

7. A fixture for batch sodium supplementation of battery pole pieces as claimed in claim 2, characterized in that: The lower plate (3) is further provided with a plurality of second battery electrode sheet fixing grooves (32), the second battery electrode sheet fixing grooves (32) corresponding to the battery electrode sheet placement grooves, and the width of the second battery electrode sheet fixing grooves (32) is smaller than the diameter of the battery electrode sheet so as to limit the vertical position of the battery electrode sheet and allow the battery electrode sheet to fully contact the pre-sodium solution.

8. A fixture for batch sodium supplementation of battery pole pieces as claimed in claim 7, characterized in that: The lower plate (3) is provided with a second battery electrode fixing strip (33) in the middle of each of the second battery electrode fixing grooves (32) to further limit the position of the battery electrode in the vertical direction.

9. A fixture for batch sodium supplementation of battery pole pieces as claimed in claim 1, characterized in that: Also includes: A hand-held threaded rod (6) and a fixing nut (7); the upper plate (1), the middle plate (2) and the lower plate (3) are respectively provided with a hand-held threaded rod mounting hole at their center; the hand-held threaded rod (6) extends from the hand-held threaded rod mounting hole and is fixed by the fixing nut (7).

10. A fixture for batch sodium supplementation of battery pole pieces as claimed in claim 9, characterized in that: The length of the hand-held threaded rod (6) is longer than the length of the mounting threaded rod (4).