High-Voltage Cable Positioning in Power Storage Modules
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Solution Overview
Problem
Existing power storage apparatuses face difficulties in connecting high-voltage cables at predetermined positions due to length tolerance, making it challenging to securely attach both ends of the cables to the electrode terminals and devices.
Innovation Solution
A power storage apparatus with a support structure that positions high-voltage cables along a reference path, ensuring both ends of the cables are easily connected to the power storage module and device, while reducing the number of parts and costs by integrating the support structure with a bus bar module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a high-voltage cable with standard length tolerance is used, then the cable can be easily manufactured and installed, but it becomes difficult to connect both ends at predetermined positions due to length variation
Solution Approach 1:
The support structure is pre-installed at predetermined positions along the reference path before cable installation. This preliminary positioning structure guides the cable ends to their correct locations, compensating for cable length variations and ensuring precise connection positions without requiring high cable manufacturing precision.
Solution Approach 2:
The support structure acts as an intermediary element between the cable and the connection positions. It provides physical guidance and constraint to the cable, ensuring that despite length tolerance variations, the cable ends reach the predetermined connection points accurately.
2Manufacturing precision
If a separate support structure is added to position the high-voltage cable, then connection precision improves, but the number of parts increases and cost rises
Solution Approach 1:
The support structure is integrated with the bus bar module, combining two functional elements into a single unified component. This merging reduces the total number of separate parts while maintaining the cable positioning function, thus avoiding increased device complexity and cost.
Solution Approach 2:
The bus bar module is designed to serve dual functions: electrical connection and mechanical support for the high-voltage cable. By making the support structure part of the bus bar module, the system achieves multi-functionality, reducing part count while ensuring precise cable positioning.
Data Source
AI summary
A power storage apparatus includes a power storage module having a plurality of power storage elements which are aligned in one direction; a device placed adjacently to the power storage module in the direction of the alignment of the power storage elements; a high-voltage cable used in charge and discharge of the power storage module; and a support structure configured to support the high-voltage cable at a plurality of points to position the high-voltage cable along a reference path. The high-voltage cable is configured to electrically connect an electrode terminal of the power storage module to the device. The electrode terminal is one of two electrode terminals of the power storage module and is located on a farther side of the power storage module from the device.