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Lead-saving butt welding lead part and butt welding method thereof

A technology for welding parts and lead parts, applied in the field of lead-acid batteries, which can solve the problems of high cost, low bulk density and heavy weight.

Active Publication Date: 2016-10-26
骆驼集团蓄电池研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The consequence of this is: the top of the battery cover must leave a rather high part of the space to hold the butt welding piece 2 ', which is a great waste of space utilization for the battery, which also causes the existing butt welding It is an important factor for the small energy density and volume density of the lead-acid battery of the lead-acid battery; at the same time, the large volume of the welding part 2′ leads to high lead consumption, high cost and heavy weight of the battery; The current path between them is long, which also causes the internal resistance of the battery to be large

Method used

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  • Lead-saving butt welding lead part and butt welding method thereof
  • Lead-saving butt welding lead part and butt welding method thereof
  • Lead-saving butt welding lead part and butt welding method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] refer to figure 1 , is a lead-butt soldering part provided by this application (applicable to 1×6 structural battery). The butt-welding lead part includes a busbar 1 and a butt-welding piece 2, and the busbar 1 includes a casting welding surface 11 of an electrode group lug, a side part 12 and two pressing surfaces 13 of welding arms. The butt weldment 2 is connected to the side part 12 of the bus bar and has a small volume. It is in the shape of a cylinder, a round table, a sphere or an ellipsoid. The butt weldment 2 is a place where the butt weld is directly contacted by the extrusion of the welding arm and then energized. , at the end of welding it is all extruded in the slotted hole.

[0033] The butt weldment 2 in this example is a cylinder.

[0034] The butt welding method in this example is: the welding arm of the butt welding machine clamps the two welding arm pressing surfaces 13 on the side of the bus bar, and then squeezes the butt welding parts 2 in a hori...

Embodiment 2

[0036] On the basis of Embodiment 1, this embodiment provides a kind of accumulator that contains this butt-welding lead parts, comprises butt-welding lead parts, tank body partition wall 3 and pole group 4, the tank body partition wall 3 and the pole group 4 in this example The pole group 4 is well known to those skilled in the art, and will not be repeated here.

[0037] The battery cells are separated by the tank body partition wall 3, wherein holes are punched on the tank body partition wall 3, so that the adjacent cells can be welded with lead parts for butt welding. Because it reduces the height and occupied space of the welding parts, it improves the energy density of the battery; at the same time, because the current transmission path is reduced, it can reduce the internal resistance of the battery; at the same time, it saves lead consumption and reduces production costs.

[0038] The butt welding method in this example is:

[0039] 1) Use the welding arm of the wel...

Embodiment 3

[0046] On the basis of Embodiment 1, this embodiment provides a kind of accumulator that contains this butt-welding lead parts, comprises butt-welding lead parts, tank body partition wall 3 and pole group 4, the tank body partition wall 3 and the pole group 4 in this example The pole group 4 is well known to those skilled in the art, and will not be repeated here.

[0047] The battery cells are separated by the tank body partition wall 3, wherein holes are punched on the tank body partition wall 3, so that the adjacent cells can be welded with lead parts for butt welding. Because it reduces the height and occupied space of the welding parts, it improves the energy density of the battery; at the same time, because the current transmission path is reduced, it can reduce the internal resistance of the battery; at the same time, it saves lead consumption and reduces production costs.

[0048] The butt welding method in this example is:

[0049]1) Use the welding arm of the weldin...

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Abstract

The invention belongs to the technical field of lead acid storage batteries, and concretely relates to a lead-saving butt welding lead part and a butt welding method thereof. The butt welding lead part comprises a busbar and a butt welding member, wherein the busbar comprises a pole group plate ear welding surface, a busbar lateral part and two welding arm compacting surfaces; and the butt welding member is connected with the busbar lateral part. The butt welding method of the butt welding lead part comprises the following steps: the weld arms of a butt welder clamp the busbar lateral part and horizontally oppositely extrude the busbar lateral part to make butt welding parts contact with each other in order to carry out power-on welding, clamping is continuously kept to cool and solidify the butt welding parts, and the weld arms are loosened and reset to complete the whole butt wedding period. The purpose of the invention is to break the disadvantage of connection of present lead acid storage batteries. The lead-saving butt welding lead part and the butt welding method thereof can realize serial connection between battery pack single batteries and between pole groups, can reduce lead consumption to reduce the production cost, and also can avoid the space waste in the battery design and improve the energy density and the volume density of the batteries.

Description

technical field [0001] The invention belongs to the technical field of lead-acid batteries, and in particular relates to a lead-saving butt-welding lead part and a butt-welding method thereof. Background technique [0002] In order to meet the voltage requirements of customers, lead-acid batteries generally require two or more single cells connected in series. At present, the connection between single cells generally adopts the through-wall welding method. [0003] The current design generally adopts the following method: the interconnection of the pole plates inside a pole group is completed by the busbar 1′, and the interconnection between the pole groups in a battery pack needs to be completed by the butt weldment 2′; at the same time, because The butt weldment 2' exists on the bus bar and has a relatively large volume. [0004] The consequence of this is: the top of the battery cover must leave a rather high part of the space to hold the butt welding piece 2 ', which i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/14H01M10/06
CPCH01M10/06H01M10/14Y02E60/10Y02P70/50
Inventor 刘长来史俊雷张祖波夏诗忠张行祥
Owner 骆驼集团蓄电池研究院有限公司
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