CN204257767U - Battery cell shaping fixture - Google Patents

Abstract

The utility model provides a battery cell shaping fixture, including a flexible packaging film, and a positive electrode sheet, a diaphragm and a negative electrode sheet which are stacked in sequence in the flexible packaging film; the diaphragm is located between the positive and negative electrode sheets, and the positive and negative electrode sheets are respectively provided with positive and negative electrode ears; the positive electrode sheet, the diaphragm and the negative electrode sheet are arranged in a curved surface; the flexible packaging film includes an upper film and a lower film, and the upper film and the lower film are packaged and connected to vacuum seal the positive electrode sheet, the diaphragm and the negative electrode sheet into the flexible packaging film, and the width of the package seal is 5 to 8 mm. The battery cell shaping fixture of the utility model adopts a stacking structure, and through the design of the flexible packaging film and the control of the seal width, it is more conducive to the arc forming of the battery cell shaping fixture, so that the appearance is flat and wrinkle-free after the arc forming.

Description

Battery cell shaping fixture

technical field

The utility model relates to the field of manufacturing lithium ion batteries, in particular to a jig for shaping battery cells.

Background technique

With the further development of electronic products, batteries are used more and more frequently.

Existing batteries need to be wound or laminated. Due to the internal structure, the surface of the battery cell will be uneven, the thickness will be uneven, and the battery will be variable. For example, the polymer winding cell will have deformation problems; The problem of excessive thickness of lithium battery; the problem of deformation of battery cells and the problem of low hardness of battery cells will lead to defects in the appearance and performance of batteries using these battery cells.

Therefore, it is necessary to provide an effective method and equipment to reshape the appearance of the battery and improve the problems of uneven surface, uneven thickness and soft battery of the battery cell.

Utility model content

The purpose of the utility model is to provide a battery cell shaping jig which can make the surface of the battery cell smooth and reliable.

In order to achieve the above purpose, the utility model provides a battery cell shaping jig, which includes a bottom, a supporting part, a pressing part, a top and several splints, the bottom includes a carrying platform, and the supporting part is several vertical splints. The set of supporting feet, the pressing part can be moved along the supporting feet and installed on the supporting part and arranged between the bottom and the top, the pressing part includes a first pressing plate, which is arranged on the first pressing plate Several limit columns on the plywood, springs sleeved on each limit column and a second pressing plate installed on the upper end of the limit column, the top is installed on the top of the support part. The top includes a top plate and a pressing part installed on the top plate. The splint is detachably arranged between the pressing part and the bottom, and can move vertically.

Preferably, the supporting part is four vertical supporting feet, the bottom and the top are respectively fixedly installed on the upper and lower ends of the supporting feet, and the pressing part is correspondingly provided with four through holes and four positioning part, the four supporting feet pass through the four through holes of the pressing part, so that the pressing part can be moved along the supporting feet and installed on the supporting part and arranged between the bottom and the top .

Preferably, the limit posts are set along the vertical direction, the number of the limit posts is 8, the limit posts are evenly fixed on the first pressing plate, the number of the springs is 8, They are respectively sleeved on each limiting column, and the second pressing plate is vertically movable and mounted on the limiting column.

Preferably, the pressing part is connected to the top plate through threads.

Beneficial effects of the utility model: the battery cell shaping jig of the utility model can effectively shape the battery cell, has strong practicability, and is applicable to all types of battery cells; it can completely solve the deformation problem of the polymer winding cell ;It can completely solve the problem of ultra-thickness in the lithium battery manufacturing process; it can effectively prevent the deformation of the battery cell.

In order to further understand the features and technical contents of the present utility model, please refer to the following detailed description and accompanying drawings of the present utility model. However, the accompanying drawings are for reference and illustration only, and are not intended to limit the present utility model.

Description of drawings

The technical solution and other beneficial effects of the utility model will be apparent through the detailed description of the specific implementation of the utility model in conjunction with the accompanying drawings.

In the attached picture,

Fig. 1 is a structural schematic diagram of the first preferred embodiment of the battery cell shaping jig of the present invention;

Fig. 2 is a cross-sectional view of the usage state of the first preferred embodiment of the battery cell shaping jig of the present invention.

Detailed ways

In order to further illustrate the technical means adopted by the utility model and its effects, a detailed description will be given below in conjunction with preferred embodiments of the utility model and accompanying drawings.

Please refer to Figures 1 and 2, the utility model provides a battery cell shaping jig, including a bottom 10, a support portion 20, a pressing portion 30, a top 40 and several splints 50, the bottom 10 includes a carrying platform 12, The supporting part 20 is a plurality of supporting feet 22 arranged in the vertical direction, and the pressing part 30 is installed on the supporting part 20 so as to move along the supporting feet and is arranged between the bottom 10 and the top 40. The pressing portion 30 includes a first pressing plate 32, a plurality of position-limiting posts 34 arranged on the first pressing plate 32, a spring 36 sleeved on each position-limiting post 34, and a spring mounted on the upper end of the position-limiting post 34. The second pressing plate 38 , the top 40 is installed on the top of the supporting part 20 . The top 40 includes a top plate 42 and a pressing portion 44 mounted on the top plate 42 . The clamping plate 50 is detachably disposed between the pressing portion 30 and the bottom 40 and can move vertically.

When using the battery cell shaping jig to reshape the battery cell 100, firstly, the battery cell 100 is precharged, and the first layer of battery cells 100 is tiled on the carrier platform 12, and then a piece of The splint 50 is pressed on the first layer of battery cells 100 , and then the second layer of battery cells 100 is tiled on the splint 50 , and then another splint 50 is pressed on the second layer of battery cells 100 Next, set the subsequent splint 50 and several layers of battery cells 100 according to the setting method of the splint 50 on the first layer of battery cells 100 and the second layer of battery cells 100, and press the pressing part 30 on the last layer. layer the top of the battery cell 100, and then press the pressing part 30 through the pressing part 54, the pressure is first transmitted to the second pressing plate 38, and through the buffer of the limit post 34 and the spring 36, the pressure is evenly and smoothly transmitted to the The first pressing plate 32 is then passed to the last layer of battery cells 100 by the first pressing plate 32 , and then transferred to the carrying platform 12 in turn to shape the battery cells 100 through uniform pressure. Then move the battery cell shaping jig and the battery cell 100 clamped therein to a high-temperature baking turnover car, set the temperature at 75 degrees Celsius, bake for 4 hours, transfer to a cooling room, and cool to below 35 degrees Celsius, that is, Complete shaping.

The setting of the support parts 20 is selected according to the needs of the product. Generally speaking, under the premise of ensuring the support strength, the number of the support parts 20 is as small as possible. In this embodiment, the support parts 20 are 4 vertically arranged The supporting feet 22, the bottom 10 and the top 40 are respectively fixedly installed at both ends of the supporting feet, and the pressing part 30 is correspondingly provided with 4 through holes (not shown) and 4 positioning parts (not shown) , the positioning part can be a bolt, and the four supporting feet 22 pass through the four through holes of the pressing part 30 respectively, so that the pressing part 30 can be moved along the supporting feet 22 and installed on the supporting part on and located between said bottom and top. The supporting part supports the relative position of the bottom and the top, and delimits the movement of the pressing part.

The limit post 34 and the spring 36 are used to evenly distribute and buffer the pressure exerted by the pressure applying portion 44 to prevent the failure of shaping due to uneven force application. In this embodiment, the limiting posts 34 are arranged vertically, and the number is eight, and the eight limiting posts 34 are evenly fixed on the first pressing plate 32, and the spring There are also 8 pieces, which are respectively sleeved on each limit post 34, and the second pressing plate 38 can be moved vertically and installed on the limit post 34, so as to ensure that the pressure exerted by the pressing part can be The pressure is transmitted to the stop post and the spring.

The setting conditions of the pressing part 44 are various, and the principle is that the required pressure can be applied to the pressing part 30; in this embodiment, the pressing part 44 and the top plate 42 are connected by threads When it is necessary for the pressing part 44 to apply pressure, the pressing part 44 is rotated so that the pressing part 44 moves downward, thereby applying pressure to the pressing part 30 .

To sum up, the battery cell shaping jig of the utility model can effectively shape the battery cell, and has strong practicability, and can be applied to all types of battery cells; it can completely solve the deformation problem of polymer winding cells; it can Thoroughly solve the problem of ultra-thickness in the lithium battery manufacturing process; it can effectively prevent the deformation of battery cells, and the battery cells that have used the battery cell shaping jig have high hardness, which can make polymer cells achieve the hardness of aluminum shell cells.

As mentioned above, for those of ordinary skill in the art, various other corresponding changes and deformations can be made according to the technical scheme and technical concept of the present utility model, and all these changes and deformations should belong to the claims of the present utility model. protected range.

Claims (4)

1. a battery battery core reshaping clamp, it is characterized in that, comprise bottom, support portion, nip portion, top and several pieces clamping plate, described bottom comprises a carrying platform, described support portion is the feet that several vertical direction is arranged, described nip portion can be installed on described support portion and to be located between described bottom and top along feet movement, described nip portion comprises the first force fit plate, be located at the several limited posts on the first force fit plate, be sheathed on the spring on each limited post and be installed on the second force fit plate of limited post upper end, described top is installed on top, described support portion, described top comprises a head slab and is installed on the pressure portion of head slab, and described clamping plate are dismountable to be located between described nip portion and bottom, and can vertically move.

2. battery battery core reshaping clamp as claimed in claim 1, it is characterized in that, described support portion is 4 feets vertically arranged, described bottom and top are fixedly installed in the two ends up and down of described feet respectively, described nip portion correspondence arranges 4 through holes and 4 location divisions, described 4 feets are each passed through 4 through holes of nip portion, thus can be installed on described support portion and to be located between described bottom and top along feet movement by described nip portion.

3. battery battery core reshaping clamp as claimed in claim 1, it is characterized in that, described limited post is vertically arranged, described limited post number is 8, described limited post is fixedly installed on described first force fit plate uniformly, described spring is 8, is sheathed on each limited post respectively, and described second force fit plate can being installed on described limited post of vertically movement.

4. battery battery core reshaping clamp as claimed in claim 1, it is characterized in that, described pressure portion and described head slab are threaded connection.