Unpaired weldment lead-acid battery pack

Abstract

The invention is suitable for the technical field of chemical battery production, and provides an unpaired weldment lead-acid battery pack, which comprises at least two individual batteries, wherein each individual battery comprises a plurality of positive pole plates and a plurality of negative pole plates, which are arranged at intervals; the plurality of positive plates form a positive pole group, and the plurality of negative pole plates form a negative pole group; the positive pole group of one individual battery and the negative pole group of the adjacent individual battery are connected through a combined bus bar or / and a lengthened bus bar; and the residual positive pole group and the residual negative pole group are connected through a conventional bus bar. In the unpaired weldment lead-acid battery pack, the individual batteries in the pack are not connected by the weldment connection manner, but by the integrally molded bus bar or the lengthened bus bar; the bus bar can realize in-parallel connection of pole plates in the pole group, and serial connection between pole groups between the individual batteries. Therefore, the space waste in the battery design is avoided; the energy density and the volume density of the battery are improved; and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of chemical battery production, and more specifically relates to an improved structure of a lead-acid battery pack. Background technique [0002] Currently, existing lead-acid battery designs suffer from some inherent drawbacks. See Figure 1 to Figure 3 For example, in the conventional battery design, the interconnection of the pole plates inside a pole group is completed by the busbar 11', while the interconnection between the pole groups in a battery pack needs to be completed by the butt weldment 12'; at the same time, because The butt welding piece 12' exists on the bus bar, so a relatively high part of the space must be left on the top of the battery cover to hold the butt welding piece 12', which is a great waste for the space utilization of the battery. It is also an important factor that causes the low energy density and volume density of the existing lead-acid batteries with butt-welded parts. At ...

AI Technical Summary

Problems solved by technology

See Figure 1 to Figure 3 For example, in the conventional battery design, the interconnection of the pole plates inside a pole group is completed by the busbar 11', while the interconnection between the pole groups in a battery pack needs to be completed by the butt weldment 12'; at the same time, because The butt welding piece 12' exists on the bus bar, so a relatively high part of the space must be left on the top of the battery cover to hold the butt welding piece 12', which is a great waste for the space utilization of the battery. It is also an important factor causing the low energy density and volume density of the existing lead-acid batteries with butt weldments. At the same time, there are inherent shortcomings and technical difficulties that the production process is relatively complicated, so that the production cost is high.

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