Electric-conducting carbon felt and lead tab connection method

A connection method and conductive carbon technology, applied in welding equipment, welding equipment, auxiliary welding equipment, etc., can solve the problems of battery product safety, hidden quality problems, low mechanical strength of grid joints, large interface ohmic resistance, etc. A large amount of lead, easy implementation, and high pollution reduction effect

Active Publication Date: 2017-05-24
SHUANGDENG GRP
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  • Claims
  • Application Information

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Problems solved by technology

Although this connection structure can achieve the purpose of transmitting electric energy, it has low mechanical strength and large interface ohmic resistance, which reduces the conductivity efficiency.
In addition, due to the low mechanical strength of the grid junction, the

Method used

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  • Electric-conducting carbon felt and lead tab connection method
  • Electric-conducting carbon felt and lead tab connection method
  • Electric-conducting carbon felt and lead tab connection method

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Embodiment Construction

[0016] Below in conjunction with embodiment, the present invention will be further described.

[0017] The method of conductive carbon felt and lead lug of the present invention is a kind of physical connection method, and it is carried out according to the following steps:

[0018] A. Material preparation—cut the conductive carbon felt according to the size, and cut the flaky lead tab. The size of the conductive carbon felt in this embodiment is 200×150×2.0mm, and the size of the lead tab is 170×30×1.0mm;

[0019] B. Lamination——a piece of lead lug is laminated flat on one side of the upper frame of the conductive carbon felt. This embodiment is for example figure 1 with figure 2 As shown in the figure, a sheet-shaped lead lug is laid flat on one side of the upper frame of the conductive carbon felt;

[0020] C. Spot welding - Spot welding is carried out at intervals of 10mm along the length of the lead lug. The spot welding pole head is a plane of φ5.0mm. The heating tim...

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Abstract

The invention discloses an electric-conducting carbon felt and lead tab connection method. The connection method includes the steps of clipping electric-conducting carbon felt and flaky lead tabs according to sizes, and flatly overlaying the flaky lead tabs on one or two sides of a frame of the electric-conducting carbon felt prior to spot welding. The electric-conducting carbon felt and lead tab connection method has the advantages that connection between the lead tabs and the electric-conducting carbon felt is achieved through a spot welding technology, the connection technology is reasonable in design and easy to implement, most importantly, resistance heat formed by spot welding enables the lead tabs to melt locally, liquid lead alloy at the position permeates into seams of the electric-conducting carbon felt, and a mutual jogged structure is formed after cooling; a tightly connected joint is formed through staggered jogging and is nearly doubled in connection strength as compared with that of a product in the same specification in the prior art, and accordingly electric conductivity is also improved remarkably.

Description

technical field [0001] The invention relates to a connection method of heterogeneous components, in particular, the invention relates to a connection method of conductive carbon felt and lead tabs. Background technique [0002] As we all know, the core component grid in the lead-acid battery is a lead product, and the electrolyte between the two electrodes is dilute sulfuric acid. The pollution sources in the manufacturing process of this industry are mainly lead and acid, among which lead pollution is the most polluting to the environment. In recent years, the industry has been working hard to find substitutes for lead and acid, and strive to use less lead and acid in products. The newly developed non-lead grid is a product developed in accordance with this principle. It is made of two different types of materials, that is, the main body of the grid is made of conductive carbon felt, and the tabs for external connections are still made of lead materials. . At present, th...

Claims

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Application Information

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IPC IPC(8): B23K37/00B23K31/02
CPCB23K31/02B23K37/00
Inventor 吕雪平陆亚山王富存王启龙
Owner SHUANGDENG GRP
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