Battery Module Polarity Display Height Guide
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Solution Overview
Problem
Existing battery modules face challenges in efficiently connecting multiple battery packs with correct polarity orientation, leading to potential faulty connections and increased complexity in assembly, especially in high-power applications like electric vehicles.
Innovation Solution
A battery module design featuring a bus bar system with coupling pieces and connection pieces of different heights to facilitate easy assembly and polarity detection, ensuring correct polarity alignment and preventing faulty connections by using guides for the bus bar assembly and distinct polarity display parts on each battery pack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple battery packs are electrically connected using a bus bar, then the output voltage and current increase, but the complexity of ensuring correct polarity orientation increases
Solution Approach 1:
The patent uses polarity display parts with different heights (front polarity display part and rear polarity display part) to visually indicate polarity orientation. The height difference creates a clear visual distinction that helps workers correctly orient battery packs during assembly, reducing polarity confusion while maintaining the ability to connect multiple packs for increased power output.
Solution Approach 2:
The bus bar is designed with guides that interact with the polarity display parts on battery packs. These guides act as intermediaries that physically guide the bus bar into the correct position relative to the terminals, ensuring proper polarity connection without requiring complex assembly procedures.
2Adaptability or versatility
If battery packs are connected in series or parallel configurations, then the battery module meets various output demands, but the risk of faulty binding due to polarity confusion increases
Solution Approach 1:
The polarity display parts are pre-formed on the battery packs before assembly, with the front and rear display parts having different heights. This preliminary visual marking system is in place before the connection process begins, allowing workers to verify correct polarity orientation in advance and preventing faulty bindings in series or parallel configurations.
Solution Approach 2:
The guides on the bus bar serve as intermediaries that physically ensure correct alignment between the bus bar and battery pack terminals. The guides work together with the polarity display parts to provide both visual indication and physical constraint, thereby ensuring reliable connections across different configuration types.
3Ease of manufacture
If guides are added to facilitate bus bar assembly, then the ease of manufacture improves, but the device complexity increases
Solution Approach 1:
The guides are integrated directly into the bus bar structure, merging the guiding function with the electrical connection function. This combination means that the bus bar itself provides the guidance mechanism through its structural design, eliminating the need for separate guiding components and reducing overall device complexity while improving ease of manufacture.
Data Source
AI summary
A battery module includes a bus bar; and a plurality of battery packs electrically connected to each other by the bus bar and arranged in front and rear directions, wherein each of the plurality of battery packs comprises a front polarity display part and a rear polarity display part that display polarities of terminals in front and rear positions of the terminals, wherein the front polarity display part and the rear polarity display part are formed to have different heights.