CN102790299B - Flatbed electrode fixture applicable to lithium battery formation automatic production line - Google Patents

Abstract

The invention provides a flat-plate electrode clamp suitable for the automatic production line of lithium battery formation, which is characterized in that: it includes a left electrode clamp and a right electrode clamp arranged in pairs, and the left electrode clamp and the right electrode clamp are respectively fixed on the left On the drive slide and the right drive slide, the left and right electrode clamps are driven by the reciprocating motion of the left drive slide and the right drive slide to move in opposite directions or in opposite directions. The present invention can control the closing and opening of the electrode clamp by controlling the movement of the driving slide plate, and the clamping force of the electrode clamp can be easily adjusted through the leaf spring, which is suitable for automatic operation; and in case of accident, the electrode clamp can be operated without power The bottom will automatically open to loosen the clamping of the lithium battery electrodes. The parallel installation of the electrodes of the electrode holder of the present invention solves the universality problem of the electrode holder required for the formation of two types of lithium batteries with one-side outlet and double-side outlet.

Description

A flat electrode fixture suitable for the automatic production line of lithium battery formation

technical field

The invention relates to a flat electrode clamp structure suitable for a lithium battery formation automatic production line, which belongs to the lithium battery formation technology.

Background technique

The battery formation process is an important link in the production of lithium-ion power batteries. The formation process of lithium batteries generally takes 10 to 15 days, and lithium batteries need to be charged, discharged and aged many times. Due to multiple, discontinuous charge and discharge process cycles, the positive and negative tabs of the lithium battery need to be clamped and loosened by the electrode fixture many times. In order to improve production efficiency and automation, an electrode fixture suitable for production automation operations, suitable for lithium batteries of different specifications and different electrode production methods is particularly important.

Contents of the invention

The purpose of the present invention is to provide a flat-plate electrode fixture suitable for the automatic production line of lithium battery formation, so as to realize the charging and discharging process operation of lithium batteries with different specifications and different electrode outlet methods on the same production line.

In order to achieve the above object, the technical solution of the present invention is to provide a flat electrode clamp suitable for the automatic production line of lithium battery formation, which is characterized in that: it includes left electrode clamps and right electrode clamps arranged in pairs, The electrode holder and the right electrode holder are respectively fixed on the left drive slide and the right drive slide. The reciprocating motion of the left drive slide and the right drive slide drives the left electrode holder and the right electrode holder to move in opposite directions or in opposite directions. When the left electrode holder When the electrode holder and the right electrode holder move in opposite directions, each pair of left and right electrode holders clamps one tab of the lithium battery respectively; when the left and right electrode holders move in opposite directions, each Loosen the clamping of the lithium battery tabs on the left electrode clip and the right electrode clip.

Preferably, the structures of the left electrode holder and the right electrode holder are the same, including an electrode support plate fixed on the left drive slide or the right drive slide, and an electrode fixing plate is arranged above the electrode support plate. Plate, two leaf springs are connected between the electrode support plate and the electrode fixing plate, and electrodes are arranged on the side of the electrode fixing plate, wherein, the electrodes of each pair of the left electrode clip and the right electrode clip Relatively arranged, the electrodes are connected to power lines or signal lines.

Preferably, it further includes two sets of springs, one end of each set of springs is installed on the left drive slide or the right drive slide, and the other end is fixedly installed.

Owing to adopting above technical scheme, the present invention has following advantage and positive effect compared with prior art:

The paired left electrode clips and right electrode clips of the present invention are fixedly connected to two driving slides, the closing and opening of the electrode clips can be controlled by controlling the movement of the driving slides, and the electrode clips can be easily adjusted by the plate spring. The clamping force is suitable for automatic operation; and in case of accidents, the electrode clamp can be automatically opened without power to loosen the clamping of the lithium battery electrode. The parallel installation of the electrodes of the electrode holder of the present invention solves the general problem of the electrode holder required for the formation of two types of lithium batteries with one-side and double-side outlets.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of a flat-plate electrode fixture suitable for a lithium battery formation automatic production line disclosed in the embodiment;

Fig. 2 is a schematic structural view of a pair of left sheet electrode clips and right sheet electrode clips in Fig. 1;

FIG. 3 is a schematic diagram of the working principle when the pair of left electrode clips and right electrode clips in FIG. 2 hold the tabs of the lithium battery.

Detailed ways

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.

As shown in Figure 1, this embodiment discloses a flat electrode clamp structure suitable for the automatic production line of lithium battery formation, including a left electrode clamp 1, a right electrode clamp 2, a left drive slide 4, a right drive slide 3 and two Set return spring 5.

The left electrode holder 1 and the right electrode holder 2 are used in pairs. The left sheet electrode clip 1 is fixedly connected on the left drive slide plate 4, and the right sheet electrode clip 2 is fixedly connected on the right drive slide plate 3. The logarithm of the electrode clips that are fixedly connected on the left drive slide plate 4 and the right drive slide plate 3 can be determined as required. The left drive slide 4 and the right drive slide 3 reciprocate, driving the left electrode clamp 1 and the right electrode clamp 2 to move towards each other or oppositely. The closing and opening of the left electrode clamp 1 and the right electrode clamp 2 are realized by the relative or opposite movement of the left driving slide 4 and the right driving slide 3 .

There are two sets of return springs 5, one end of each set of springs 5 is installed on the left driving slide 4 or the right driving slide 3, and the other end is fixedly installed, so that the left electrode clamp 1 and the right electrode clamp 2 can be automatically reset without power. Open to reset.

The left electrode holder 1 includes a left electrode 11 , a left electrode fixing plate 12 , a left plate spring 13 and a left electrode support plate 14 . The left electrode 11 is located at the end of the left electrode holder 1, and is mounted on the inner side of the left electrode fixing plate 12 through screw connection. The left leaf spring 13 has two pieces, which are fixed on both sides between the left electrode fixing plate 12 and the left electrode support plate 14 through screw connection. The structure of the right electrode holder 2 is the same as that of the left electrode holder 1, including a right electrode 21, a right electrode fixing plate 22, two right leaf springs 23 and a right electrode support plate 24.

The left electrode 11 is connected to the power line 6 , and the right electrode 21 is connected to the signal line 7 .

As shown in FIG. 3 , during the process of clamping the tab of the lithium battery by the electrode fixture, the left drive slide 4 and the right drive slide 3 move relatively, so that the left electrode 11 and the right electrode 21 are in contact with a tab 8 of the lithium battery, The left driving slide 4 and the right driving slide 3 continue to move toward each other, the left leaf spring 13 and the right leaf spring 23 produce a slight deformation Δd, and the electrode clamp head generates a clamping force, and the left electrode clamp 1 and the right electrode clamp 2 are effectively clamped One pole ear 8 of the lithium battery; the left driving slide 4 and the right driving slide 3 move in opposite directions, the micro-deformation Δd of the left leaf spring 13 and the right leaf spring 23 disappears, the clamping force disappears, and the electrode clamp is loosened to the lithium battery pole ear 8 clamping.

Claims (2)

1. the plate electrode fixture of an applicable automatic lithium battery formation production line, it is characterized in that: comprise left plate electrode folder arranged in pairs (1) and right plate electrode folder (2), left plate electrode folder (1) is separately fixed on left driving slide plate (4) and right driving slide plate (3) with right plate electrode folder (2), drive left plate electrode folder (1) and right plate electrode folder (2) to do move toward one another or reverse motions by the reciprocating motion of left driving slide plate (4) and right driving slide plate (3), in the time that left plate electrode folder (1) and right plate electrode folder (2) do move toward one another, respectively lithium battery lug (8) is clamped by every pair of left plate electrode folder (1) and right plate electrode folder (2), in the time that left plate electrode folder (1) and right plate electrode folder (2) do reverse motions, every pair of left plate electrode folder (1) and right plate electrode folder (2) unclamp the clamping to lithium battery pole ear (8),

The version of described left plate electrode folder (1) and right plate electrode folder (2) is identical, comprise the electrode support plate being fixed on described left driving slide plate (4) or described right driving slide plate (3), above electrode support plate, be provided with electrode fixed head, between electrode support plate and electrode fixed head, be connected with two leaf springs, side at electrode fixed head is provided with electrode, wherein, the electrode positioned opposite of every pair of described left plate electrode folder (1) and described right plate electrode folder (2), electrode is connected with power line (6) or holding wire (7).

2. the plate electrode fixture of a kind of applicable automatic lithium battery formation production line as claimed in claim 1, it is characterized in that: also comprise two groups of springs (5), it is upper that one end of each group spring (5) is arranged on described left driving slide plate (4) or described right driving slide plate (3), the other end installation that is fixed.