Battery Module Same-Side Electrode Design for Compact Harness
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Solution Overview
Problem
In battery modules, the arrangement of total positive and total negative electrodes on opposite sides complicates the connection harness and requires large installation space when multiple modules are connected.
Innovation Solution
A battery module design where the first and second total output electrodes of opposite polarities are positioned on the same side, with a first output pole piece and a second output pole piece connected to each electrode, featuring an intermediate connection portion with tensile buffer structures and an accommodation gap between pole post groups, allowing for a simpler and more compact connection harness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the total positive electrode and total negative electrode are disposed at opposite ends of the battery module, then the battery module can maintain a balanced structure, but the connection harness becomes complicated and large installation space is required when multiple battery modules are connected
Solution Approach 1:
The patent inverts the conventional arrangement by positioning both the total positive electrode and total negative electrode on the same side of the battery module instead of opposite ends. This inversion allows multiple battery modules to be connected with simpler harness arrangements and reduced installation space, directly resolving the technical contradiction between ease of operation and structural shape.
2Ease of operation
If the total positive electrode and total negative electrode are disposed at opposite ends of the battery module, then the battery module can maintain structural balance, but large installation space is required when multiple battery modules are connected
Solution Approach 1:
The patent inverts the conventional arrangement by positioning both the total positive electrode and total negative electrode on the same side of the battery module instead of opposite ends. This inversion allows multiple battery modules to be connected with simpler harness arrangements and reduced installation space, directly resolving the technical contradiction between ease of operation and structural shape.
3Ease of operation
If the intermediate connection portion is extended to connect both total output electrodes, then the electrodes can be positioned on the same side, but the connection portion may interfere with adjacent components
Solution Approach 1:
The patent introduces an intermediate connection portion that acts as a mediator to connect the first total output electrode to the first output pole piece. This intermediate structure enables both electrodes to be positioned on the same side while the intermediate connection portion is designed to avoid interfering with adjacent components such as the second output pole piece, thus resolving the contradiction between electrode positioning and component interference.
Data Source
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AI summary
The present application relates to a battery module (20), a battery pack (10), a device, and a method for manufacturing a battery module (20). The battery module (20) includes: a battery unit (21) including a first total output electrode (21a) and a second total output electrode (21b), the battery unit (21) includes more than two battery assemblies (21c) arranged side by side and connected in series with each other; each of the battery assembles (21c) includes at least one secondary battery (22), the two pole posts (222) of respective secondary batteries (22) are arranged to form two columns of pole post groups, and there is an accommodation gap (22a) between the two columns of pole post groups; a first output pole piece (30) including a first connection portion (31) connected to the first total output electrode (21a), an intermediate connection portion (32), and a first output portion (33), the intermediate connection portion (32) is connected to a side of the first connection portion (31) close to the accommodation gap (22a); a second output pole piece (40) including a second connection portion (41) connected to the second total output electrode (21b) and a second output portion (42), and the second total output electrode (21b) is positioned on a side of the first total output electrode (21a) close to the second output portion (42); the first output portion (33) and the second output portion (42) are disposed on the same side of the battery unit (21). The battery module (20) of the present application can reduce the arrangement complexity and space occupation rate of the connection harness.