Cylindrical Battery Module Cooling Plate for Dense Cell Fixation
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Solution Overview
Problem
Cylindrical battery modules face challenges with large volume, complex structures, reduced energy density, and safety risks due to heat generation, along with inefficient cell fixation, protection, and cooling systems that increase production costs and space utilization.
Innovation Solution
A cylindrical battery module design featuring brackets and annular cooling plates with arc grooves and integrated water chambers, reducing volume and improving space utilization, cooling efficiency, and safety through simplified assembly and reduced leakage risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple cylindrical batteries are stacked and secured using a band, then the battery module can be assembled with simple structure, but the band may contact the battery surface and cause local overheating
Solution Approach 1:
A buffer component is introduced between the band and the battery surface. This buffer acts as an intermediary that prevents direct contact between the band and battery, thereby eliminating the source of local overheating while maintaining the simple stacked structure
Solution Approach 2:
The buffer component is designed as a thin film or shell structure that wraps around the battery. This flexible buffer layer provides thermal isolation without adding significant structural complexity, allowing the band to secure multiple batteries while protecting them from overheating
2Strength
If the battery module uses a fixed rigid structure, then mechanical strength is sufficient, but the battery cannot adapt to expansion or contraction during charging and discharging
Solution Approach 1:
The connection structure between batteries and the module frame is designed to be dynamic rather than rigid. The buffer component and connection mechanism allow relative movement between batteries and the fixed frame, enabling the system to maintain mechanical strength while adapting to volume changes during charge-discharge cycles
3Stability of the object's composition
If the band is tightly secured to hold batteries firmly, then mechanical stability is improved, but the band contacts the battery surface causing overheating
Solution Approach 1:
The buffer component serves as a thermal isolating intermediary that allows the band to maintain tight mechanical contact for stability while preventing thermal contact that would cause overheating. The buffer is positioned between the band and battery surface to provide this dual function
Data Source
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AI summary
A cylindrical battery module is provided. The cylindrical battery module includes at least two rows of cell assemblies (100), two brackets (3), and a cooling plate (2). The cell assemblies (100) in each row include a plurality of cylindrical cells (101) arranged along a first direction. The two brackets (3) are disposed at two sides of the at least two rows of cell assemblies (100) along a second direction. Each of the brackets (3) is provided with a plurality of fixing holes (31), and each of the cylindrical cells (101) is plugged into two corresponding ones of the fixing holes (31) on the two brackets (3). The cooling plate (2) is clamped between two adjacent rows of the cell assemblies (100). The cooling plate (2) is provided with a plurality of arc grooves (21) arranged at intervals and along the first direction. A first inserting portion is formed between two adjacent ones of the arc grooves (21). The arc grooves (21) are respectively mated with the cylindrical cells (101) of the cell assemblies (100) in one row, and the first inserting portion is inserted into a gap between two adjacent ones of the cylindrical cells (101) of the cell assemblies (100) in the one row.