US 10,651,451 B2Granted

Battery module

AssigneeContemporary Amperex Technology Co., Limited

InventorXiaorong Liu

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Abstract

A battery module for energy storage is provided, comprising at least one battery unit, including: first and second battery cells comprising first and second electrode tabs as well as third and fourth electrode tabs respectively; first and second connection structures comprising first support/connection portions as well as second support/connection portions respectively, regarding material, first and second support portions being different from materials of first and second connection portions, regarding polarity, the first and second electrode tabs being the same as the third and fourth electrode tabs, both first and fourth electrode tabs being lap-jointed with the first support portion and connected by welding via the first connection portion; and the second electrode tab is lap-jointed with the second support portion and connected by welding with the second connection portion, so as to achieve the welding between electrode tabs with different polarities and expedite the manufacturing schedule for battery module.

Claims10

Dependent claims

A battery module, comprising at least one battery unit, wherein the battery unit comprises:

a first battery cell comprising a first electrode tab and a second electrode tab;
a second battery cell comprising a third electrode tab and a fourth electrode tab;
a first connection structure comprising a first support portion and a first connection portion;
a material of the first support portion being different from a material of the first connection portion;
and
a second connection structure comprising a second support portion and a second connection portion;
a material of the second support portion being different from a material of the second connection portion;
wherein a polarity of the first electrode tab is the same as a polarity of the third electrode tab, a polarity of the second electrode tab being the same as a polarity of the fourth electrode tab, both the first electrode tab and the fourth electrode tab being lap-jointed with the first support portion and connected with each other by welding via the first connection portion;
and the second electrode tab is lap-jointed with the second support portion and is connected by welding with the second connection portion.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/008,250Filed 14 Jun 2018
Priority: CN 2017 2 1226739 U22 Sep 2017
Published: US 2019/0097201 A128 Mar 2019
Granted: 12 May 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

H01M 10/482
Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte:…
H01M 10/0413
Construction or manufacture in general: large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
H01M 50/519
Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing: comprising printed…
H01M 50/536
Electrode connections inside a battery casing: characterised by the method of fixing the leads to the electrodes, e.g. by welding