TAB bending unit for li -ion battery pouch type cell modules

Abstract

The invention relates to tab bending unit (1) in li-ion battery pouch-type cell modules comprising in its structure at least two rollers (1.1) positioned on both side of the automation assembly conveyor, capable of horizontal pressure and movement; piston (1.2), which enables the rollers (1.1) to perform the bending process by applying pressure; vertical movement module (1.3) that enables vertical up-down movement of the pistons (1.1) and horizontal movement module (1.4) that enables horizontal left-right movement of the pistons (1.1).

Description

[0001] TAB BENDING UNIT FOR LI-ION BATTERY POUCH TYPE CELL MODULES

[0002] Technical Field :

[0003] The present invention relates to a tab bending unit in li-ion battery pouch type cell modules .

[0004] State of the Art :

[0005] Batteries are the general name of devices that allow electrical energy to be stored and used when necessary .

[0006] Lithium-ion batteries , or li-ion batteries for short , are types of batteries that can be recharged quickly . The amount and duration of power provided by li-ion batteries is fairly high according to their weights and measurements .

[0007] On the other hand, the carbon emissions and toxic values of li-ion batteries are much lower than other battery types .

[0008] Due to these features , li-ion batteries are used in many electronic devices , especially tablets and mobile phones .

[0009] Nowadays , li-ion batteries are used in hybrid vehicles and electric vehicles .

[0010] Nowadays , li-ion batteries are divided into three main types as cylinder type li-ion batteries , prism type li-ion batteries and pouch type li-ion batteries .

[0011] In li-ion battery pouch type cells , it is necessary to perform a bending operation in order to make a healthy welding on the connector surface of the anode-cathode tabs during the bringing of the cells to the module structure . This is important to ensure that the connector surfaces of the anode and cathode tabs of the cells in the module structure are properly j oined .

[0012] The most important issue during the current bending process is the short circuit problem between cells . In case of a short circuit during the bending process , both the production process is disrupted, and the battery cell may be damaged .

[0013] Bending is a very important process in the production of li- ion battery modules . Because this process is an important process that af fects the performance , reliability, and durability of the battery .

[0014] Object of the Invention :

[0015] The obj ect of the invention is to provide a safe and ef ficient bending process with rollers capable of pressure and movement to optimi ze the electrical connections of the module battery, to increase its mechanical durability and to increase the overall system ef ficiency, to ensure that the connector surfaces of the anode and cathode tabs of the cells in the module structure are properly j oined .

[0016] Another obj ect of the invention is to eliminate the short circuit problem that may occur in the bending process thanks to the non-conductive rollers .

[0017] Descriptions of the Figures

[0018] Figure l .A perspective view of the tab bending unit ,

[0019] Figure 2 . An appearance of the rollers in the tab bending unit , Figure 3. A side view of the tab bending unit,

[0020] Figure 4. A rear view of the tab bending unit,

[0021] Figure 5. An appearance of the horizontal movement module in the tab bending unit,

[0022] Figure 6. An appearance of the tabs whose bending process is completed,

[0023] List of the Reference Numbers:

[0024] 1. Tab bending unit in li-ion battery pouch type cell modules

[0025] 1.1. Roller

[0026] 1.2. Piston

[0027] 1.3. Vertical movement module

[0028] 1.4. Horizontal movement module

[0029] 2. Tab whose bending process is completed

[0030] Description of the Invention:

[0031] In the li-ion battery pouch type cell modules of the invention, there are at least two positioned rollers (1.1) on both sides of the automation assembly conveyor in the form of a tab bending unit (1) ; a piston (1.2) that allows the rollers (1.1) to perform the bending process by applying pressure; a vertical movement module (1.3) that allows the up-and-down vertical movement of the pistons (1.1) and a horizontal movement module (1.4) that allows the horizontal movement of the pistons (1.1) to the right and left.

[0032] In the li-ion battery pouch type cell modules of the invention, the tab bending unit (1) has at least two rollers (1.1) on both sides of the mass production automation assembly conveyor with horizontal pressure and movement ability. These rollers (1.1) allow the tabs to be bent and positioned in a designated manner.

[0033] The bending process of the tab bending unit (1) is carried out by applying pressure force to the tabs by pushing the rollers (1.1) by the pistons and by the right-left and up-down movement of the vertical movement module (1.3) and the horizontal movement module (1.4) .

[0034] Thanks to the pistons (1.3) and the vertical movement module (1.3) and the horizontal movement module (1.4) , the rollers (1.1) of the tab bending unit (1) are equipped with both pressure and movement ability. In this way, it can be ensured that the bending process is carried out accurately and repeatedly .

[0035] In the bending process, the battery cell tabs are fully placed on the connector surface by bending from right to left and from top to bottom through the rollers (1.1) . Then, the laser welding process is applied so that these tabs form a solid connection to the connectors.

[0036] The tab bending unit (1) has non-conductive rollers (1.1) so that there is no short circuit problem in the bending process.

[0037] After the bending process is completed, a vertical movement module (1.3) , which can move up and down, is used for the ironing process. The vertical movement module (1.3) of the tab bending unit (1) is a servo system. After the bending process is completed, the ironing process is carried out by the up and down vertical movement of the vertical movement module (1.3) . With the ironing process, the final form of the tabs is determined and brought to the desired structure. Thanks to the tab bending and ironing processes performed by the tab bending unit (1) , the electrical connections of the module battery are optimized, increasing its mechanical durability, and increasing the overall system efficiency.

Claims

CLAIMS1. The invention is a tab bending unit (1) in li-ion battery pouch type cell modules, characterized in that it comprises at least two positioned rollers (1.1) on both sides of the automation assembly conveyor, capable of horizontal pressure and movement; a piston (1.2) that allows the rollers (1.1) to perform the bending process by applying pressure; a vertical movement module (1.3) that allows the up-and-down vertical movement of the pistons (1.1) and a horizontal movement module (1.4) that allows the horizontal movement of the pistons (1.1) to the right and left.

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