Series Battery Cell Support Structure for Tear-Resistant Joints
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Solution Overview
Problem
The reliability of batteries during operation is compromised due to the risk of tearing at joints between battery cells, which affects the electrical connection stability and safety of both the battery and power-consuming devices.
Innovation Solution
A support structure is introduced between battery cells connected in series, featuring accommodating spaces and reinforcing ribs to securely fix the electrode output portions, reducing the risk of joint tearing and enhancing electrical connection stability by restricting movement and providing additional stiffness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple battery cells are connected in series and encapsulated in a case, then the battery capacity is improved, but the risk of tearing at joints between battery cells increases
Solution Approach 1:
A support structure is introduced as an intermediary component between battery cells. The support includes a receiving space that accommodates the electrode output portions and connecting portions of adjacent battery cells, and a fixing member that secures these connections. This intermediary structure stabilizes the joints between battery cells, preventing tearing while maintaining the series connection configuration that enables high capacity.
2Use of energy by moving object
If battery cells are connected in series to improve capacity, then the battery can store more energy, but the joint between battery cells becomes vulnerable to tearing
Solution Approach 1:
The support structure is segmented into distinct functional components: a support body that provides the receiving space and fixing members that provide the securing function. This segmentation allows the joint between battery cells to be reinforced without compromising the energy storage capacity of the battery cells themselves. The fixing member specifically targets the joint area to prevent tearing while the battery cells maintain their full energy storage capability.
3Reliability
If a support structure is added to fix battery cell joints, then the electrical connection stability is improved, but the device complexity increases
Solution Approach 1:
The support structure merges multiple functions into a single component: it provides structural support, creates the receiving space for electrode output portions, and incorporates fixing members for securing connections. By combining these functions into one integrated support structure rather than multiple separate components, the design improves electrical connection stability while minimizing the increase in device complexity.
4Reliability
If fixing members are used to secure electrode output portions, then the risk of joint tearing is reduced, but the manufacturing complexity increases
Solution Approach 1:
The support structure is designed with pre-formed receiving spaces and fixing members that are prepared in advance. The receiving space is pre-configured to accommodate the electrode output portions and connecting portions in their correct positions, and the fixing members are pre-positioned to secure these connections. This preliminary preparation simplifies the assembly process by reducing the need for complex alignment and adjustment operations during manufacturing.
Data Source
AI summary
A battery includes: a battery module, including a first battery cell and a second battery cell connected in series along a first direction, where a first electrode output portion of the first battery cell is electrically connected to a second electrode output portion of the second battery cell by means of welding, and the first direction is a length direction of the battery; and a support, arranged between the first battery cell and the second battery cell, where the support is provided with a first accommodating space penetrating through the support in the first direction and configured to accommodate the first electrode output portion and the second electrode output portion.