Method for connecting two battery poles made of different materials of two battery cells and battery cell
A technology of battery cells and battery cells, which is applied to electrical components, battery pack components, high-frequency current welding equipment, etc., and can solve problems such as high additional costs, difficult control of processing technology, and difficult manufacturing of welding connections
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Publication Date
- 2018-01-19
Smart Images
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Abstract
Description
technical field
[0001] The invention relates to a method according to the preamble of claim 1 for connecting two battery poles of two battery cells made of different materials. Furthermore, the invention relates to a battery unit with interconnected battery cells according to the preamble of claim 3 . Background technique
[0002] Such a method or such a battery cell is known from DE 10 2009 046 505 A1. In this known method or its battery cell, it is provided that the poles of the first battery cell and the poles of the second battery cell are directly connected to one another by means of a material-fit, force-fit or form-fit connection. In this case, the two poles of the two battery cells consist of different materials, in particular copper and aluminum. As a connection method, a welding method and a riveting method are suggested, or alternatively, two battery poles are suggested to be screwed together.
[0003] Depending on the structure, lithium-ion batteries have batt...
Examples
Embodiment Construction
[0018] exist figure 1 A battery unit 100 is shown in a greatly simplified manner, which consists of a large number of interconnected battery cells 10 . exist figure 1 In the diagram, only six battery cells 10 connected to each other are shown for the sake of simplification, however, in practice, such a battery cell 100 may also consist of more than six battery cells 10 . Such a battery unit 100 is preferably, but not exclusively, used in a motor vehicle, in particular as a component of a hybrid drive. Furthermore, the battery cells 10 are in particular lithium-ion battery cells 10 each having a positive electrode 1 and a negative electrode 2 . In the illustrated embodiment, all six battery cells 10 are electrically connected in series such that the individual battery voltages of these battery cells sum. It is of course also within the scope of the invention that the battery cells 10 are at least partially electrically connected in parallel.
[0019] A special feature of th...