Battery Module End Plate Positioning for Precise Multi-Submodule Assembly
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Solution Overview
Problem
The existing battery module assembling processes face challenges in achieving precise positioning of end plates due to their considerable length, leading to instability and reduced precision, especially when multiple submodules are assembled, which affects the overall stability and energy density of the battery module.
Innovation Solution
An end plate positioning apparatus is introduced, featuring a pedestal with supporting pieces and positioning mechanisms that convert rotation into movement in the vertical direction, utilizing limited space efficiently to position end plates with high precision, including first, second, and third positioning mechanisms to stabilize and clamp the end plates, and a suction mechanism to prevent tipping and facilitate precise placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual positioning of end plates is used, then device complexity is reduced, but manufacturing precision deteriorates due to accumulation of positioning errors
Solution Approach 1:
The positioning device is divided into multiple independent positioning components (first positioning component for first end plates, second positioning component for second end plates). Each component can be independently adjusted and positioned, allowing precise control of each end plate separately while maintaining overall system manageability.
Solution Approach 2:
The positioning components are pre-configured with adjustable structures (such as adjustable support surfaces and positioning features) that allow precise positioning to be established before the assembly process begins. This preliminary preparation enables high precision without requiring complex real-time adjustment mechanisms.
2Manufacturing precision
If fixed positioning structures are used, then manufacturing precision is improved, but adaptability deteriorates when battery cell specifications change
Solution Approach 1:
The positioning device incorporates adjustable and movable components rather than fixed rigid structures. The first and second positioning components can be adjusted to accommodate different battery cell specifications while maintaining precise positioning. This dynamic adjustability allows the same device to adapt to various cell types and sizes without sacrificing positioning accuracy.
Solution Approach 2:
The positioning device is designed with universal features that allow it to handle multiple battery cell specifications. The adjustable positioning components can be reconfigured for different cell dimensions, making the device versatile across product variants while maintaining consistent positioning precision through the same fundamental mechanism.
3Manufacturing precision
If complex positioning devices are used to achieve precise positioning, then manufacturing precision is improved, but productivity deteriorates due to increased assembly complexity
Solution Approach 1:
By segmenting the positioning function into separate, standardized components (first positioning component for cathode end plates, second positioning component for anode end plates), the device achieves precise positioning through modular elements that are simpler to manufacture and assemble than a monolithic complex positioning system.
Solution Approach 2:
The positioning components are designed with pre-established geometric relationships and fixed dimensional parameters (such as the specified distance between opposing end plates). This preliminary design of fixed dimensions allows precise positioning to be achieved through simple assembly operations rather than complex real-time adjustments, thereby improving productivity.
Data Source
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AI summary
Embodiments of this application provide an end plate positioning apparatus and battery module assembling equipment. The end plate positioning apparatus includes: a pedestal; a supporting piece, disposed on the pedestal and configured to hold an end plate; at least one first positioning mechanism, including a first positioning piece and a positioning locking piece, where the first positioning piece is rotatably connected to the pedestal, the positioning locking piece includes a guide portion and a slide portion, one of the guide portion or the slide portion is disposed on the first positioning piece, and the other is disposed on the pedestal; the guide portion includes a first position and a second position, and the slide portion is able to move between the first position and the second position to drive the first positioning piece to rotate; when the slide portion is located in the first position, the first positioning piece is in abutment with the end plate, so that the first positioning piece and the supporting piece clamp the end plate from both sides; and, when the slide portion is located in the second position, the first positioning piece is out of abutment with the end plate. The end plate positioning apparatus and battery module assembling equipment according to this application can improve precision of assembling battery modules.