Battery Cell Pole Integration on Side Wall for Assembly Simplification
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Solution Overview
Problem
The assembly procedures of battery cells are complex due to the need to connect the electrode assembly to an end cover before placing it into the housing, which complicates the placement and welding processes.
Innovation Solution
The battery cell design integrates the pole onto the side wall of the housing, allowing the electrode assembly to be placed directly into the housing without pre-connection to an end cover, simplifying the assembly process and enabling easier integration of water cooling components for improved heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electrode assembly is connected to an end cover before being placed into the housing, then the connection is secure, but the assembly procedure becomes complicated
Solution Approach 1:
The end cover is integrated with the housing to form an integrated housing assembly. The pole is disposed on the first side wall of the housing, merging the functions of the end cover and housing into a single structural unit. This eliminates the need for separate connection steps between the electrode assembly and end cover, thereby simplifying the assembly procedure while maintaining secure electrical connection.
2Ease of manufacture
If the pole is disposed on the end cover, then the assembly structure is conventional, but the area for arranging water cooling components is limited
Solution Approach 1:
The pole is repositioned from the end cover to the first side wall of the housing, utilizing a different spatial dimension. This dimensional shift opens up the end cover area for other purposes and creates additional space on the side wall for arranging water cooling components, thereby enlarging the available area for thermal management without compromising the conventional assembly structure.
3Reliability
If two end covers are welded to the housing, then the housing is fully enclosed, but the assembly procedure is more complex
Solution Approach 1:
The end cover and housing are merged into an integrated housing assembly with the pole disposed on the side wall. This integration reduces the number of separate welding operations required, as the integrated structure can be sealed with fewer joints while maintaining full enclosure and reliability of the housing.
Data Source
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AI summary
This application discloses a battery cell, a battery, an electric apparatus, and a manufacturing method and device of battery cell. The battery cell includes a housing, an electrode assembly, and a pole. The housing is integrally formed and includes two first side walls arranged opposite each other in a first direction and two second side walls arranged opposite each other in a second direction, the two first side walls and the two second side walls enclose an accommodating cavity, the housing has at least one opening in a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other. The electrode assembly is accommodated in the accommodating cavity, and the electrode assembly includes a body portion and a tab protruding out of the body portion. In the battery cell in this application, the pole is integrated and assembled on the side wall of the housing. In this way, the electrode assembly does not need to be connected to an end cover beforehand when being placed into the housing, which facilitates placement into the housing and simplifies assembly procedures of the battery cell.