Flexible connection device for lithium battery formation movable positive and negative probes

Abstract

This application relates to a flexible connection device for movable positive and negative electrode probes in lithium battery formation, belonging to the technical field of lithium battery production equipment. It includes an upper mounting plate and a lower mounting plate, both with through-holes for the positive and negative electrode probes to pass through. Abutment rings are provided on the peripheral walls of the positive and negative electrode probes located between the upper and lower mounting plates. Flexible rubber rings are provided on both end walls of the abutment rings, abutting against the upper and lower mounting plates respectively. Several connecting members are provided between the upper and lower mounting plates. This application provides a flexible connection for the installation of the positive and negative electrode probes, reducing the probability of damage to the probes due to stress.

Description

Technical Field

[0001] This application relates to the field of lithium battery production equipment technology, and in particular to a flexible connection device for movable positive and negative electrode probes in lithium battery formation. Background Technology

[0002] Lithium-ion battery formation refers to the process of forming stable lithium-ion channels and electrolyte layers inside the battery through specific charging and discharging methods, thereby improving the battery's performance and stability. It is a crucial step in the lithium-ion battery production process. During lithium-ion battery formation, positive and negative electrode probes are required. The positive electrode probe is pressed against the positive electrode of the battery, and the negative electrode probe is pressed against the negative electrode of the battery, so as to accurately measure the voltage and current of the lithium-ion battery and provide a reliable basis for battery evaluation. In the current technology, the positive and negative electrode probes are usually mounted on a plate, and the positive and negative electrode probes are moved to contact the battery through a lifting mechanism. However, under the influence of external factors such as thermal expansion and contraction and vibration, stress is easily generated, which can lead to damage to the positive and negative electrode probes. Therefore, improvements are needed. Utility Model Content

[0003] In order to provide a flexible connection for the installation of positive and negative electrode probes and reduce the probability of damage to the positive and negative electrode probes due to stress, this application provides a movable flexible connection device for positive and negative electrode probes in lithium battery formation.

[0004] The flexible connection device for movable positive and negative electrode probes in lithium battery formation provided in this application adopts the following technical solution: A flexible connection device for movable positive and negative electrode probes in lithium battery formation includes an upper mounting plate and a lower mounting plate. The upper and lower mounting plates have through mounting holes for the positive and negative electrode probes to pass through. The positive and negative electrode probes are provided with abutment rings on their peripheral walls between the upper and lower mounting plates. Flexible rubber rings are provided on both end walls of the abutment rings, and the flexible rubber rings at both ends abut against the upper and lower mounting plates respectively. Several connectors are provided between the upper and lower mounting plates.

[0005] Preferably, the upper and lower mounting plates each have a clearance groove on their adjacent sides for the flexible rubber ring to abut.

[0006] Preferably, the connector includes a fixed tube, a sliding tube, a spring element, and two fastening nuts. Both the upper and lower mounting plates have through-holes along their thickness for the fixed tube and the sliding tube to pass through. The fixed tube passes through the lower mounting plate, and the sliding tube passes through the upper mounting plate. One end of the sliding tube passing through the upper mounting plate is inserted into the fixed tube. The spring element is disposed inside the fixed tube and abuts against the sliding tube. The spring element causes the sliding tube to maintain a tendency to move away from the lower mounting plate. The peripheral walls of both the fixed tube and the sliding tube that do not pass through the lower and upper mounting plates have threaded sections for fastening nuts to connect.

[0007] Preferably, a limiting ring is provided at the opening of the fixed tube, the sliding tube passes through the limiting ring, and a limiting block is provided on the peripheral wall of the end of the sliding tube located inside the fixed tube, the diameter of the limiting block being larger than the inner diameter of the limiting ring.

[0008] Preferably, the abutment ring includes two semicircular rings, the inner diameter of the abutment ring is smaller than the diameter of the positive probe and the negative probe, and the peripheral walls of the positive probe and the negative probe are provided with annular grooves for the abutment ring to abut into. One of the semicircular rings has a tenon on its end wall and the other semicircular ring has a groove on its side wall for the tenon to abut into.

[0009] Preferably, both semicircular rings have positioning blocks on their inner walls, and the inner wall of the ring groove has two positioning holes for the positioning blocks to be inserted.

[0010] Preferably, a metal protective layer is provided on the side of the upper mounting plate that is opposite to the lower mounting plate.

[0011] Preferably, a flexible pad is filled between the upper mounting plate and the lower mounting plate.

[0012] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting an upper mounting plate and a lower mounting plate, as well as abutment rings and flexible rubber rings set on the peripheral walls of the positive and negative probes, this application can form a flexible connection between the positive and negative probes and the mounting plate when external forces such as thermal expansion and contraction or vibration occur, allowing the positive and negative probes to undergo a certain displacement, thereby preventing stress concentration from causing overall damage. 2. The upper and lower mounting plates, positive and negative probes and abutment rings of this application are all connected in a detachable manner, which facilitates the replacement of local parts when damaged, avoids the need for complete replacement, and improves practicality and economic efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a flexible connection device for movable positive and negative electrode probes in lithium battery formation according to an embodiment of this application.

[0014] Figure 2 This is a cross-sectional view of the upper mounting plate and the lower mounting plate according to an embodiment of this application.

[0015] Figure 3 This is an exploded structural diagram of the abutment ring according to an embodiment of this application.

[0016] Figure 4 This is a cross-sectional view of the connector according to an embodiment of this application.

[0017] Explanation of reference numerals in the attached drawings: 1. Upper mounting plate; 2. Lower mounting plate; 3. Positive probe; 4. Negative probe; 5. Mounting hole; 6. Abutment ring; 601. Semicircular ring; 602. Locking tenon; 603. Locking groove; 604. Positioning block; 7. Flexible rubber ring; 8. Connector; 801. Fixing tube; 802. Sliding tube; 803. Spring component; 804. Fastening nut; 805. Limiting ring; 806. Limiting block; 9. Relief groove; 10. Connecting hole; 11. Ring groove; 12. Positioning hole; 13. Metal protective layer; 14. Flexible pad. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0019] This application discloses a flexible connection device for movable positive and negative electrode probes in lithium battery formation. (Refer to...) Figure 1 The system includes an upper mounting plate 1 and a lower mounting plate 2. Both the upper mounting plate 1 and the lower mounting plate 2 have a metal protective layer 13 on their opposite sides. In this embodiment, the metal protective layer 13 is a galvanized layer to improve the overall structural strength and corrosion resistance. A flexible pad 14 is provided between the upper mounting plate 1 and the lower mounting plate 2. The flexible pad 14 is a rubber pad, which can effectively buffer the impact and prevent the upper mounting plate 1 and the lower mounting plate 2 from breaking due to compression.

[0020] Reference Figure 1 , Figure 2 and Figure 3Both the upper mounting plate 1 and the lower mounting plate 2 have mounting holes 5 extending along their thickness direction for the positive electrode probe 3 and the negative electrode probe 4 to pass through. The peripheral walls of the portions of the positive electrode probe 3 and the negative electrode probe 4 located between the upper mounting plate 1 and the lower mounting plate 2 are provided with abutment rings 6. In this embodiment, the abutment rings 6 include two semicircular rings 601, the inner diameter of which is smaller than the diameter of the positive electrode probe 3 and the negative electrode probe 4. The peripheral walls of the positive electrode probe 3 and the negative electrode probe 4 are provided with abutment rings 601. The inner wall of the annular groove 11 has a tenon 602 on one end wall of the semicircular ring 601 and a groove 603 on the end wall of the other semicircular ring 601 for the tenon 602 to abut, thereby fixing the two semicircular rings 601. The inner wall of both semicircular rings 601 is provided with a positioning block 604. The inner wall of the annular groove 11 is provided with a positioning hole 12 for the positioning block 604 to abut, so as to prevent the abutting ring 6 from rotating relative to the positive probe 3 and the negative probe 4, thereby improving stability.

[0021] Refer to him 1 and Figure 2 Flexible rubber rings 7 are provided on both end walls of the abutment ring 6. The bottom wall of the upper mounting plate 1 and the surface of the lower mounting plate 2 are provided with relief grooves 9 for the flexible rubber rings 7 to abut, thereby improving the stability of the flexible rubber rings 7 and preventing the flexible rubber rings 7 from sliding relative to the upper mounting plate 1 or the lower mounting plate 2.

[0022] Reference Figure 1 and Figure 4 A plurality of connecting parts 8 are provided between the upper mounting plate 1 and the lower mounting plate 2. The connecting parts 8 include a fixed tube 801, a sliding tube 802, a spring 803, and two fastening nuts 804. Both the upper mounting plate 1 and the lower mounting plate 2 have connecting holes 10 through them along their thickness direction for the fixed tube 801 and the sliding tube 802 to pass through. The fixed tube 801 passes through the lower mounting plate 2, and the sliding tube 802 passes through the upper mounting plate 1. One end of the sliding tube 802 passing through the upper mounting plate 1 is inserted into the fixed tube 801. A limit ring 805 is provided at the opening of the fixed tube 801, and the sliding tube 802 passes through the limit ring 805. The sliding tube 802 is located at the fixed tube 801. A limiting block 806 is provided on the peripheral wall of one end of the tube 801. The diameter of the limiting block 806 is larger than the inner diameter of the limiting ring 805 to prevent the fixed tube 801 from separating from the sliding tube 802. A spring member 803 is provided inside the fixed tube 801 and abuts against the sliding tube 802. The spring member 803 keeps the sliding tube 802 moving away from the lower mounting plate 2. The peripheral walls of both the fixed tube 801 and the sliding tube 802 that do not pass through the lower mounting plate 2 and the upper mounting plate 1 are provided with threaded sections for fastening nuts 804 to connect. The above structure can effectively prevent the upper mounting plate 1 and the lower mounting plate 2 from shifting relative to each other, and improve the overall stability.

[0023] The implementation principle of the movable positive and negative electrode probe flexible connection device for lithium battery formation in this application embodiment is as follows: By setting an upper mounting plate 1 and a lower mounting plate 2, and setting abutment ring 6 and flexible rubber ring 7 on the peripheral walls of positive electrode probe 3 and negative electrode probe 4, a flexible connection is formed between positive electrode probe 3 and negative electrode probe 4 and the mounting plate. This allows positive electrode probe 3 and negative electrode probe 4 to undergo a certain displacement when external forces such as thermal expansion and contraction or vibration occur, thereby preventing stress concentration from causing overall damage and extending the overall service life.

[0024] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A flexible connection device for movable positive and negative electrode probes in lithium battery formation, characterized in that: The device includes an upper mounting plate and a lower mounting plate. The upper and lower mounting plates have through mounting holes for a positive probe and a negative probe to pass through. The positive probe and the negative probe are provided with abutment rings on their peripheral walls between the upper and lower mounting plates. Flexible rubber rings are provided on both ends of the abutment rings, and the flexible rubber rings at both ends abut against the upper and lower mounting plates, respectively. Several connecting parts are provided between the upper and lower mounting plates.

2. The movable positive and negative electrode probe flexible connection device for lithium battery formation according to claim 1, characterized in that: Both the upper and lower mounting plates have recessed grooves on their adjacent sides for the flexible rubber ring to abut.

3. The movable positive and negative electrode probe flexible connection device for lithium battery formation according to claim 1, characterized in that: The connector includes a fixed tube, a sliding tube, a spring element, and two fastening nuts. Both the upper and lower mounting plates have through holes along their thickness for the fixed tube and the sliding tube to pass through. The fixed tube passes through the lower mounting plate, and the sliding tube passes through the upper mounting plate. One end of the sliding tube passing through the upper mounting plate is inserted into the fixed tube. The spring element is located inside the fixed tube and abuts against the sliding tube. The spring element keeps the sliding tube moving away from the lower mounting plate. The peripheral walls of both the fixed tube and the sliding tube that do not pass through the lower and upper mounting plates have threaded sections for fastening nuts to connect.

4. The movable positive and negative electrode probe flexible connection device for lithium battery formation according to claim 3, characterized in that: A limiting ring is provided at the opening of the fixed tube, the sliding tube passes through the limiting ring, and a limiting block is provided on the peripheral wall of the end of the sliding tube located inside the fixed tube. The diameter of the limiting block is larger than the inner diameter of the limiting ring.

5. The movable positive and negative electrode probe flexible connection device for lithium battery formation according to claim 1, characterized in that: The abutment ring includes two semicircular rings. The inner diameter of the abutment ring is smaller than the diameter of the positive probe and the negative probe. The peripheral walls of the positive probe and the negative probe are provided with annular grooves for the abutment ring to abut. One of the semicircular rings has a tenon on its end wall and the other semicircular ring has a groove on its side wall for the tenon to abut.

6. The movable positive and negative electrode probe flexible connection device for lithium battery formation according to claim 5, characterized in that: Both of the semicircular rings have positioning blocks on their inner walls, and the inner wall of the ring groove has two positioning holes for the positioning blocks to be inserted.

7. The movable positive and negative electrode probe flexible connection device for lithium battery formation according to claim 1, characterized in that: A metal protective layer is provided on the opposite side of the upper and lower mounting plates.

8. The movable positive and negative electrode probe flexible connection device for lithium battery formation according to claim 1, characterized in that: A flexible pad is filled between the upper mounting plate and the lower mounting plate.

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