Battery tab welding equipment and welding method

A technology for welding equipment and battery tabs, which is applied to welding equipment, non-electric welding equipment, battery pack components, etc. Improve welding accuracy and safety

Pending Publication Date: 2018-02-09
BEIJING NAT BATTERY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a battery tab welding equipment and its welding method to solve the technical problem in the prior art that there is no effective welding fixture for fast clamping and alignment of hard tabs and soft tabs

Method used

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  • Battery tab welding equipment and welding method
  • Battery tab welding equipment and welding method
  • Battery tab welding equipment and welding method

Examples

Experimental program
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Effect test

Embodiment 1

[0058] Such as Figure 1-2 As shown, a battery tab welding device provided in this embodiment includes: a workbench 10, a frame 20, a vacuum adsorption device 30 and an actuator 40;

[0059] The workbench 10 is used to support the cell 50 of the battery;

[0060] The vacuum adsorption device 30 is arranged on the frame 20 in a liftable manner;

[0061] The actuator 40 is fixedly arranged on the frame 20, and is used to drive the vacuum adsorption device 30 to lift up and down;

[0062] The vacuum adsorption device 30 is used for negative pressure adsorption and fixation of the hard tab 60 (or tab for short);

[0063] The hard tab 60 falls down with the vacuum suction device 30 and abuts against the soft tab 51 (or current collector) of the cell 50 .

[0064] Among them, the hard tab 60 is usually made of metal thin skin such as copper sheet or aluminum sheet, with a thickness of 0.2-0.5mm, preferably 0.3mm; while the soft tab 51 is made of copper foil, with a thickness of 0...

Embodiment 2

[0087] This embodiment also discloses a welding method using the above-mentioned battery tab welding equipment, wherein reference Figure 1-5 As shown, it includes the following steps:

[0088] S1. Pre-bend the hard lug 60 by 90°;

[0089] S2. Use negative pressure suction and cooperate with the limit mechanism (limit top plate 70) to absorb the bent hard tab 60 under the actuator 40; during the adsorption process, the hard tab 60 is vacuum adsorbed (or negative When pressing and absorbing), the position adjustment in the height and left and right directions is automatically realized;

[0090] S3. Place the cell 50 of the battery on the welding position on the workbench 10; the hard tab 60 corresponds up and down with the soft tab 51 on the cell 50;

[0091] Driven by the actuator 40, the hard tab 60 falls and leans against the soft tab 51, and the two are welded together by ultrasonic waves.

[0092] S4. The negative pressure suction is removed, the hard tab 60 is separate...

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Abstract

The invention provides battery tab welding equipment and welding method, and relates to the technical field of battery manufacturing. The battery tab welding equipment comprises a workbench, a rack, avacuum absorption device and an executing mechanism, wherein the workbench is used for supporting a battery cell of a battery, the vacuum absorption device is arranged on the rack in a lifting way, the executing mechanism is fixedly arranged on the rack and is used for driving the vacuum absorption device to ascend and descend, the vacuum absorption device is used for fixing a hard tab by negative-pressure absorption, and the hard tab falls off with the vacuum absorption device and props against a soft tab of the battery cell. The battery tab welding equipment provided by the invention is simple in structure, the tab welding accuracy is greatly improved, the production efficiency is improved, and meanwhile, the rejection rate and the production cost are reduced.

Description

technical field [0001] The invention relates to the technical field of battery manufacturing, in particular to a welding device for tabs of laminated batteries and a welding method thereof. Background technique [0002] Tabs are a raw material for lithium-ion polymer battery products. For example, mobile phone batteries, bluetooth batteries, and notebook batteries used in our daily life all need to use tabs. The battery is divided into positive and negative poles, and the tabs are the metal conductors that lead the positive and negative poles out of the battery. In layman's terms, the ears of the positive and negative poles of the battery are the contact points when charging and discharging. This contact point is not the copper piece we see on the outside of the battery, but a connection inside the battery. [0003] At present, the welding of tabs of laminated batteries is divided into two types: direct welding and bending welding. The bending welding is to weld the hard t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/26B23K20/10B23K20/26B23K20/24H01M50/531
CPCB23K20/10B23K20/24B23K20/26H01M50/531Y02E60/10
Inventor 史乐罗赵新
Owner BEIJING NAT BATTERY TECH
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