Composite convergence piece 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, simple structure effect
Pending Publication Date: 2019-08-27
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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[0023] 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.
[0024] 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.
[0025] In addition, the technical features and technical solutions described herein can also be com...
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The invention discloses a composite convergence piece for a battery module. The composite convergence piece comprises a steel sheet and also comprises an aluminum sheet, wherein a plurality of weldingbulges protruding downwards are punched on the steel sheet, the aluminum sheet is closely arranged at an upper side of the steel sheet, a plurality of flange holes flanging outwards are formed in thealuminum sheet, a plurality of engagement holes are formed in the steel sheet in a penetrating way, engagement teeth are arranged on hole walls of the engagement holes and protrude inwards in a radial direction, flanging edges of the flange holes extend to the engagement holes, the flanging edges of the flange holes are radially extruded by expansion equipment inserted into the flange holes, so that the flanging edges are radially and outwards expanded and deformed, and the engagement teeth are engaged with the flanging edges. The composite convergence piece is simple in structure and low incost, is convenient to fabricate and has high overcurrent 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 battery fixtures (or battery brackets) supporting these battery cells. There are many battery insertion holes arranged 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 to ach...
Claims
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Login to View More IPC IPC(8): H01M2/20H01R4/62H01R25/16
CPCH01R4/62H01R25/16H01M50/502Y02E60/10
Inventor许玉林龚晓冬王爱淑张旭万向辉
OwnerSUZHOU ANKAO ENERGY