Battery Pack Termination Layout for Reliable Bus Communication
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Solution Overview
Problem
The difference in specifications between battery packs with and without terminating resistors complicates their commonization, leading to increased production costs due to the need to identify similar-shaped parts on the production line.
Innovation Solution
A power supply system that includes a plurality of battery packs with integrated terminating resistors, a control section for communication control via a communication line, and a harness to connect the terminating resistor to the communication line, allowing for commonization of battery packs and reducing production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminating resistors are added to battery packs to prevent signal reflection, then communication reliability is improved, but device complexity and production costs increase due to specification differences
Solution Approach 1:
The patent applies universality by making all battery packs identical in structure, with each battery pack equipped with a terminating resistor. This allows any battery pack to be connected at either end of the communication line, eliminating the need for differentiated upstream/downstream configurations. The terminating resistor becomes a standard component in every battery pack, enabling flexible system expansion without increasing complexity.
2Reliability
If terminating resistors are added to battery packs to prevent signal reflection, then communication reliability is improved, but production costs increase due to the need to identify similar-shaped parts
Solution Approach 1:
The patent applies homogeneity by ensuring all battery packs have identical external specifications and internal configurations. Every battery pack includes the same terminating resistor and communication interface, making them indistinguishable in shape and size. This eliminates the need for visual identification or sorting during production, allowing automated assembly and reducing manufacturing costs.
3Device complexity
If battery packs are commonized to reduce parts数量, then device complexity is reduced, but communication reliability may deteriorate without proper terminating resistor configuration
Solution Approach 1:
The patent merges the terminating resistor function into every battery pack unit, rather than having separate terminating components. By combining the terminating resistor with each battery pack's internal structure, the system achieves both commonization (all packs are identical) and proper signal termination (resistors are correctly positioned at communication line ends), maintaining reliability while reducing complexity.
Data Source
AI summary
A power supply system is capable of commonizing battery packs and reducing an increase in production costs. The power supply system includes a plurality of battery packs each including a terminating resistor, a control section that performs communication control on each of the battery packs via a communication line, and a harness that connects the terminating resistor included in any one of the battery packs to the communication line. The communication line extends in a predetermined direction along predetermined positions each corresponding to one of the battery packs, and the terminating resistor connected to the communication line is the terminating resistor included in the battery pack corresponding to the predetermined position located at the terminal end of the communication line in the predetermined direction, for example.