Polar plate of bipolar battery and bipolar battery comprising polar plate

Abstract

A polar plate of a bipolar battery and a bipolar battery including the polar plate, in one embodiment, the polar plate of the bipolar battery includes: a plurality of metal wires extending in a first direction; a plurality of non-metal rod-shaped bodies which extend in a second direction different from the first direction, intersect with the plurality of metal wires and are fixedly connected with the plurality of metal wires, so that a current collector is formed; a frame which is made of a plastic material and is arranged around the current collector; and a partition sealing part provided in the middle of the plurality of metal wires to divide the current collector into a first section and a second section, wherein the first section is provided with a negative electrode active material to constitute a negative plate. The second section is provided with a positive electrode active material, thereby forming a positive electrode plate. The polar plate can directly realize series connection of positive electrodes and negative electrodes of different single batteries, so that processes such as welding and the like are omitted, and the production cost is favorably saved.

Description

technical field [0001] The present application relates to a battery, in particular to a stacked battery and a pole plate in the battery. Background technique [0002] Today's batteries have been widely used in various fields, from small electronic watches to large electric vehicles, all need to be powered by batteries. Although the various types of batteries vary widely in size, the internal structure is very similar. Generally, a battery includes a casing, an electrode plate (also called a pole piece) disposed inside the casing, an electrolyte, and tabs, tab glue, etc. located outside the casing. According to the different arrangement of the pole plates inside the battery, the battery can be divided into two types: wound type battery and stacked type battery. / Stacking is arranged inside the battery case. [0003] In a stacked battery, a plurality of battery cells (also called battery cells) are generally included, and each battery cell includes a positive electrode plat...

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Problems solved by technology

[0005] However, in the prior art, due to its structural limitations (the current collector is usually a plate-shaped body made of metal, the front and back sides of the plate-shaped current collector are coated with positive and negative electrodes respectively). Polar active material, thus respectively constitute the positive and negative electrode plates, the positive and negative electrode plates are respectively located in different battery cells

The plate-shaped current collector can prevent the electrolyte from colluding between different battery cells), and each single battery can only have one positive plate and one negative plate, so it is not suitable for large-capacity batteries, so the use is very limited

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