Composite bus bar for battery module
A technology of battery modules and busbars, which is applied to battery pack parts, circuits, electrical components, etc., can solve the problems of high copper price, difficulty in punching thick steel sheets, poor flow capacity, etc., and achieve convenient welding Fixed, strong overcurrent capability, easy to make effect
Pending Publication Date: 2019-08-23
SUZHOU ANKAO ENERGY
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Problems solved by technology
[0005] However, the price of copper is high, and the welding of copper and steel sheets requires a lot of labor
Using steel sheets alone as busbars has poor current flow capacity. If the thickness of the steel sheets is increased to improve the current flow capacity, it is difficult to punch protrusions on the thick steel sheets, and it is difficult for thicker steel sheets to contact with the battery end face. welding
Method used
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[0024] The present application will be described in further detail below through specific embodiments in conjunction with the accompanying drawings. The present application can be implemented in many different forms, and is not limited to the implementation manner described in this embodiment. The purpose of providing the following specific embodiments is to facilitate a clearer and more thorough understanding of the disclosure of the present application, wherein the words indicating orientation such as up, down, left, and right are only for the positions of the structures shown in the corresponding drawings.
[0025] However, those skilled in the art may recognize that description of one or more of the specific details may be omitted, or other methods, components or materials may also be used. In some instances, some implementations were not described or described in detail.
[0026] In addition, the technical features and technical solutions described herein can also be com...
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The invention discloses a composite bus bar for a battery module, which comprises a steel sheet, a plurality of welding protrusions protruding downwards and punched on the steel sheet, and an aluminumsheet attached to the upper side of the steel sheet. The aluminum sheet is provided with a plurality of deformation holes and a plurality of deformation grooves formed in the peripheries of the deformation holes in a surrounding manner. A plurality of turnups extending upwards are punched on the steel sheet. The turnups extend into the deformation grooves. The deformation holes are extruded through expansion equipment inserted into the deformation holes. The deformation holes expand outwards in the radial direction to deform, and then the groove walls of the deformation grooves extrude the turnups to enable the turnups and the deformation grooves to be connected in a fastened mode. The composite bus bar is simple in structure, convenient to manufacture and low in price, and has very highovercurrent capability.
Description
technical field [0001] The present application relates to a composite busbar for a battery module. Background technique [0002] The battery module is mainly composed of many battery cells and the battery fixture (or battery bracket) supporting these battery cells. There are many battery insertion holes distributed in a matrix on the battery fixture, and the ends of the battery cells are inserted into the The aforementioned battery insertion holes are connected to conductors embedded in the battery insertion holes, so as to realize the series-parallel connection between the battery cells. [0003] In order to lead out the voltage (or current) of the total positive terminal and the total negative terminal of the battery module, it is necessary to arrange a bus bar on the outer surface of the battery fixture at the end of the battery module, and the bus bar is connected to the positive end surfaces of multiple battery cells. (or the negative end surface) is welded and fixed t...
Claims
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Login to View More IPC IPC(8): H01M2/20H01M2/10
CPCH01M50/20H01M50/50Y02E60/10
Inventor 许玉林龚晓冬王爱淑张旭万向辉
Owner SUZHOU ANKAO ENERGY