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A battery casting and welding bottom mold mold

A technology of casting welding and bottom mold, applied in the field of battery casting welding bottom mold, can solve the problems of false welding, increased cost, low specific heat of lead alloy, etc., and achieve the effect of solving virtual welding

Active Publication Date: 2016-11-09
JIANGSU LEOCH BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low specific heat of the lead alloy, the heat energy of the busbar lead alloy is often not enough to melt the tabs during casting welding, resulting in false welding and false welding.
At the same time, because the negative tab of the battery is thinner than the positive tab, the heat required to melt the positive tab is more than the heat required to melt the negative tab
Usually, in order to solve this problem, the method of increasing the size of the positive busbar and appropriately reducing the size of the negative busbar is adopted, but this will increase the lead consumption of the battery and increase the cost

Method used

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  • A battery casting and welding bottom mold mold
  • A battery casting and welding bottom mold mold

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Embodiment Construction

[0015] Please refer to figure 1 , battery casting and welding refers to putting the tab 103 of the battery plate 101 into the bus bar cavity 104 of the cast welding bottom mold 102, the bus bar cavity 104 is filled with high-temperature lead alloy, the high-temperature lead liquid and the tab lead The alloy melts for effective welding. However, since the negative tab of the battery is thinner than the positive tab, the heat required to melt the positive tab is more than the heat required to melt the negative tab, resulting in different casting and welding quality between the positive tab and the negative tab. According to the heat transfer formula Q=CM(T 2 -T 1 ), because the positive lug is thicker, more heat needs to be absorbed to melt the lug during casting and welding, so those skilled in the art thought of increasing the size of the positive busbar cavity in the casting and welding bottom mold, which is equivalent to improving the heat transfer The variable M in the f...

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Abstract

The application discloses a battery cast-weld bottom-die mold. The battery cast-weld bottom-die mold comprises a positive electrode baseplate and a negative electrode baseplate, wherein the positive electrode baseplate is provided with a positive cylinder manifold mold cavity; the negative electrode baseplate is provided with a negative cylinder manifold mold cavity; the positive electrode baseplate is connected with the negative electrode baseplate; and the specific-heat capacity of the material of the positive electrode baseplate is greater than that of the material of the negative electrode baseplate. According to the battery cast-weld bottom-die mold, since the specific-heat capacity of the material adopted by the positive electrode baseplate is greater than that of the material adopted by the negative electrode baseplate, on the condition that the mass of the material adopted by the positive electrode baseplate is equal to that of the material adopted by the negative electrode baseplate, the heat is released by the positive electrode baseplate and used for melting a positive electrode tab is more than that released by the negative electrode baseplate and used for melting a negative electrode tab during cast-welding so as to meet the requirement that the melting of the positive electrode tab needs more heat than that of the positive electrode tab because the positive electrode tab is thicker than the negative electrode tab. Therefore, the battery cast-weld bottom-die mold can enable the positive electrode tab and the negative electrode tab to achieve the same cast-weld effect and solves the problems of insufficient welding and false welding.

Description

technical field [0001] The application relates to the field of battery manufacturing, in particular to a battery casting and welding bottom mold. Background technique [0002] Lead-acid batteries are widely used and are mainly used in important fields such as automobiles, motorcycles, railways, stations, docks, mine handling, ships, submarines, communications, aviation, water navigation marks, medical equipment, and national defense scientific research. an essential part. [0003] At present, the production by casting welding is the future development trend of lead-acid batteries. The essence of casting welding is the process of melting the lead alloy at the welded part of the battery tab and the lead alloy of the bus bar. The alloy melts for effective welding. However, due to the low specific heat of the lead alloy, the thermal energy of the lead alloy of the busbar is often not enough to melt the tabs during casting welding, resulting in false welding and false welding. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D19/04
Inventor 熊正林袁芳刘兴强
Owner JIANGSU LEOCH BATTERY
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