CN206415447U - A kind of lug apparatus for shaping of the full lug battery core of cylindrical battery - Google Patents

Abstract

The utility model provides a kind of lug apparatus for shaping of the full lug battery core of cylindrical battery, including base and shaping component, the shaping component includes multiple bar shaped keys and elastic device, the base includes base body and the first keeper, first keeper is fixed on base body, on the base body the multiple and one-to-one bar shaped key locating slot of the bar shaped key is circumferentially provided with along the first keeper, the bar shaped key is arranged at bar shaped key locating slot by support of elastic device, the bar shaped key is set to form multiple inclined-planes to seating depression, the plurality of inclined-plane is in array distribution by round dot of the first keeper.The utility model makes to make lug its Impact direction in shaping stress be the central point along inclined-plane array using the inclined-plane of bar shaped key, so that lug reviewing direction is consistent, the flatness of lug and the reliability of welding are improved, makes tab welding process without rosin joint, reduce conductive internal resistance and excessively stream temperature rise；Avoid the bad phenomenons such as lug rosin joint, fried point.

Description

A tab shaping device for all-tab cells of a cylindrical battery

technical field

The utility model relates to the technical field of lithium-ion battery manufacturing, in particular to a tab shaping device for a cylindrical battery full-tab cell.

Background technique

With the vigorous development of electric vehicles and energy storage industries, the research and development of large-capacity and long-life lithium-ion batteries has attracted attention. Cylindrical batteries have been used in electric vehicles due to their excellent safety performance, heat dissipation performance, and long life. In the production process of cylindrical batteries, the welding process has always been a major problem that affects the conduction and temperature rise of cylindrical batteries.

Therefore, in order to ensure the reliability of welding, in the production process of existing cylindrical batteries, some battery tab shaping devices are often used to shape the tabs of the battery. For example, the Chinese patent, patent No. 201520893147.8, the patent name is cell lug shaping tooling for welding all tabs of cylindrical batteries, discloses a cell tab shaping tooling for welding all tabs of cylindrical batteries, which includes a battery device slot, two A clamp and a driving device, the battery placement slot is used to place the wound batteries; one of the clamps is arranged on one side of the battery placement slot, and the other clamp is movably arranged on the other side of the battery placement slot On one side, the opposite end faces of the two clamps are provided with grooves that cooperate with the tabs of the electric core, and protrusions are provided at the bottom of the grooves; the driving device is used to make the two clamps The grippers move in opposite and opposite directions.

However, the lug shaping fixture in the above-mentioned patent documents is an integral mold with a Pozider groove, and the surface of the Pozider groove is parallel to the bottom. When the external force is pressed, the direction of the lug rewinding is inconsistent, which will easily lead to a large gap between the two lugs. In the process, large gaps are prone to welding defects and explosion points, which will lead to insufficient welding tension, conductive internal resistance and overcurrent temperature rise.

Utility model content

In order to overcome the deficiencies in the prior art, the main purpose of the present invention is to provide a lug shaping device for cylindrical battery full-tab cells that can improve the flatness of the tabs and ensure welding reliability.

In order to achieve the above object, the utility model specifically adopts the following technical solutions:

The utility model provides a lug shaping device for a cylindrical battery full lug cell, which includes a base and a shaping component, the shaping component is recessed toward the base to form a plurality of concave slopes, and the multiple slopes correspond to a dot array distributed.

Preferably, the shaping component includes a plurality of bar keys, and the plurality of bar keys are distributed corresponding to a dot array to form the plurality of slopes.

Preferably, the base includes a base body, and the base body is provided with a plurality of bar-shaped key positioning slots corresponding to the bar-shaped keys one by one, and the bar-shaped keys are arranged in the bar-shaped key positioning slots.

Preferably, the base further includes a first positioning member, and the base body is further provided with a first positioning hole, and the first positioning hole is set at the central point of the array arrangement of the plurality of bar-shaped key positioning grooves, so that The first positioning member is arranged in the first positioning hole, and the circumference of the first positioning member is provided with an annular positioning groove, and one end of the bar key is provided with a first positioning protrusion; when the bar key is installed When the bar-shaped key is positioned in the groove, the first positioning protrusion is arranged in the annular positioning groove.

Preferably, it also includes a hollow cover plate, the cover plate is fixedly connected with the base body, and the cover plate is provided with a limiting groove, and the other end of the bar-shaped key is provided with a second positioning protrusion; when the bar key When the shape key is installed in the positioning groove of the bar-shaped key, the second positioning protrusion is arranged in the limiting groove.

Preferably, the shaping assembly further includes a plurality of elastic devices one-to-one corresponding to the plurality of bar-shaped keys, the elastic device is arranged at an end of the bar-shaped key positioning groove away from the first positioning hole, and One end of the elastic device is connected to the bar key, and the other end of the elastic device is arranged in the positioning groove of the bar key and connected to the base body.

Preferably, the end of the bar key away from the first positioning hole is provided with a second positioning hole, the end of the bar key positioning groove away from the first positioning hole is provided with a third positioning hole, and the elastic One end of the device is provided with the second positioning hole and connected with the bar key, and the other end of the elastic device is provided with the third positioning hole and connected with the base body.

Preferably, the base further includes a second positioning part, the second positioning part is integrally formed with the first positioning part, the second positioning part is used to fix the winding core, and the bar key is connected to the The second positioning members are distributed in a circle center array.

Preferably, there are six bar keys.

The ear shaping device of the present invention includes a base and a shaping component, the shaping component is recessed toward the base to form a plurality of concave slopes, and the multiple slopes are distributed corresponding to a dot array.

Compared with the prior art, the utility model makes the shaping component sag toward the base to form a plurality of concave slopes, and the multiple slopes are distributed corresponding to a dot array. Utilize the inclined surface of the shaping component to make the force direction of the lug be along the center point of the inclined plane array when it is shaped and stressed, so that the rewinding direction of the lug is consistent, which improves the flatness of the lug and protects the reliability of welding. There is no false welding in the tab welding process, which reduces the conductive internal resistance and over-current temperature rise; it avoids the bad phenomena such as false welding and explosion caused by the inconsistency of the tab rewinding direction after plastic surgery and the large gap between the tabs.

Description of drawings

Fig. 1 is a front view of a tab shaping device according to an embodiment of the present invention;

Fig. 2 is the sectional view of line D-D in Fig. 1;

Fig. 3 is a top view of the tab shaping device according to the embodiment of the present invention;

Fig. 4 is a diagram of the use state of the tab shaping device according to the embodiment of the utility model;

In the figure, A, electric core; B, electric core limit block; C, shaping device; 1, base; 11, base body; 111, first positioning hole; 112, strip key positioning groove; 1121, third positioning Hole; 113, the first bolt hole; 12, the first positioning piece; 13, the second positioning piece; 121, the annular positioning groove; 21, the bar key; 211, the second positioning hole; 212, the first positioning protrusion; 213, the second positioning protrusion; 22, the elastic device; 3, the cover plate; 31, the limit groove; 32, the second threaded hole.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in FIG. 1 , the utility model provides a lug shaping device for a cylindrical battery full-lug cell, which includes a base 1 , a shaping component and a hollow cover plate 3 . The base 1 and the cover 3 are fixedly connected, and the shaping component is arranged between the base 1 and the cover 3 . And the shaping component is recessed toward the base 1 to form a plurality of concave slopes, and the multiple slopes are distributed corresponding to a dot array.

As shown in FIG. 2 and FIG. 3 , the shaping component includes a plurality of bar keys 21 . The base 1 includes a base body 11 and a first positioning member 12 . The base body 11 is provided with a first bolt hole 113 , a first positioning hole 111 and a plurality of bar key positioning grooves 112 corresponding to the bar keys 21 one by one. The first positioning hole 111 is disposed at the central point of the plurality of strip key positioning slots 112 arranged in an array. The first positioning member 12 is disposed in the first positioning hole 111 , and an annular positioning groove 121 is disposed around the first positioning member 12 . The cover plate 3 is provided with second threaded holes 32 corresponding to the first bolt holes 113 one-to-one, and the cover plate 3 is provided with a limiting groove 31 . One end of the bar key 21 is provided with a first positioning protrusion 212 , and the other end of the bar key 21 is provided with a second positioning protrusion 213 . When the bar key 21 is obliquely installed in the bar key positioning groove 112, the first positioning protrusion 212 is set in the annular positioning groove 121, the second positioning protrusion 212 is set in the limiting groove 31, and the cover plate 3 and the base body 11 pass through The first bolt hole 113 and the second threaded hole 32 are connected by bolts. In this embodiment, six bar keys 21 are provided.

In order not to affect the shaping depth of the tabs of the battery core, the shaping assembly also includes elastic devices 22 corresponding to the bar keys 21 one by one. The end of the bar key 21 away from the first positioning hole 111 is provided with a second positioning hole 211 , and the end of the bar key positioning groove 112 away from the first positioning hole 111 is provided with a third positioning hole 1121 . One end of the elastic device 22 is disposed in the third positioning hole 1121 and connected to the base body 11 , and the other end of the elastic device 22 is disposed in the second positioning hole 211 and connected to the bar key 21 . In this embodiment, the elastic device 22 is configured as a spring.

In this embodiment, in order to fix the winding core conveniently when the tab is shaped, a second positioning part 13 is also provided, and the second positioning part 13 and the first positioning part 12 are integrally formed. When the shaping device is shaping the lug, the winding core can be placed on the second positioning member 13 for convenient fixing.

The usage state of the lug shaping device is shown in Figure 4, where A is the battery cell, B is the cell limit block, and C is the shaping device. When shaping the tabs, drive the two shaping devices C to move in opposite directions to compress the cell A, and the tabs of the cell 1 will fall toward the middle under the extrusion of the shaping device C and be pressed out for welding position, thus completing the shaping of the polar ear.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any person familiar with the technical field can easily think of All changes or replacements should fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (9)

1. a kind of lug apparatus for shaping of the full lug battery core of cylindrical battery, it is characterised in that described including base and shaping component Shaping component forms the inclined-plane of multiple indents, the multiple one dot matrixes distribution of inclined-plane correspondence to the seating depression.

2. the lug apparatus for shaping of the full lug battery core of cylindrical battery according to claim 1, it is characterised in that the shaping Component includes multiple bar shaped keys, and one dot matrixes of the multiple bar shaped key correspondence are distributed to form the multiple inclined-plane.

3. the lug apparatus for shaping of the full lug battery core of cylindrical battery according to claim 2, it is characterised in that the base Including base body, the multiple and one-to-one bar shaped key locating slot of the bar shaped key is provided with the base body, it is described Bar shaped key is arranged at the bar shaped key locating slot.

4. the lug apparatus for shaping of the full lug battery core of cylindrical battery according to claim 3, it is characterised in that the base Also include the first keeper, the base body is additionally provided with the first positioning hole, and first positioning hole is arranged at the multiple The central point of bar shaped key locating slot array arrangement, first keeper is arranged at first positioning hole, and described first determines Position part is circumferentially provided with annular positioning groove, and one end of the bar shaped key is provided with the first positioning convex；When bar shaped key is installed on During the bar shaped key locating slot, first positioning convex is arranged at the annular positioning groove.

5. the lug apparatus for shaping of the full lug battery core of cylindrical battery according to claim 4, it is characterised in that in also including Empty cover plate, the cover plate is fixedly connected with the base body, and the cover plate is provided with stopper slot, the bar shaped key it is another One end is provided with the second positioning convex；When bar shaped key is installed on the bar shaped key locating slot, second positioning convex is set In the stopper slot.

6. the lug apparatus for shaping of the full lug battery core of cylindrical battery according to claim 4 or 5, it is characterised in that described Shaping component also includes being arranged at the bar with the one-to-one multiple elastic devices of the multiple bar shaped key, the elastic device The one end of shape key locating slot away from first positioning hole, and one end of the elastic device is connected with the bar shaped key, it is described The other end of elastic device is arranged in the bar shaped key locating slot and is connected with the base body.

7. the lug apparatus for shaping of the full lug battery core of cylindrical battery according to claim 6, it is characterised in that the bar shaped The one end of key away from first positioning hole is provided with the second positioning hole, and the bar shaped key locating slot is away from first positioning hole One end be provided with the 3rd positioning hole, one end of the elastic device sets second positioning hole simultaneously to connect with the bar shaped key Connect, the other end of the elastic device sets the 3rd positioning hole and is connected with the base body.

8. the lug apparatus for shaping of the full lug battery core of cylindrical battery according to claim 4, it is characterised in that the base Also include the second keeper, second keeper is formed in one with first keeper, and second keeper is used for Fixed core, the bar shaped key is using second keeper as center of circle array distribution.

9. the lug apparatus for shaping of the full lug battery core of cylindrical battery according to claim 2 to 5 any of which, its feature It is, the bar shaped key is provided with six.