Battery Module Voltage Sensing for Folded Lead Portions

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Solution Overview

Problem

Connecting lead lines to individual lead portions for voltage detection in a battery module is complicated and inefficient.

Innovation Solution

A voltage detection device comprising a voltage detection portion, a voltage detection line, and a holding body is used to easily detect the voltage of lead portions folded back between different battery cells, with the device including a voltage detection portion and a holding body to integrate and stabilize the detection process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If lead lines are connected to individual lead portions folded back between different battery cells, then voltage detection capability is achieved, but the complexity of the connection process increases significantly

Engineering Contradiction:
Improvevoltage detection capabilityVSAvoidconnection process complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent merges the voltage detection portion and voltage detection line into an integrated assembly that is held together by a holding body. This integration reduces the complexity of connecting individual components to folded lead portions, as the entire detection assembly can be positioned and connected as a unified structure rather than managing separate lead lines for each detection point.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The holding body acts as an intermediary component that secures the voltage detection portion and voltage detection line together. This mediator structure simplifies the connection process by providing a standardized interface for attaching the detection assembly to the battery module, eliminating the need for complex individual connections to each folded lead portion.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Measurement precision

If lead lines are connected to individual lead portions folded back between different battery cells, then voltage detection capability is achieved, but the time required for the detection setup increases

Engineering Contradiction:
Improvevoltage detection capabilityVSAvoiddetection setup time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The voltage detection portion and voltage detection line are pre-assembled and held together by the holding body before being installed in the battery module. This preliminary assembly action reduces the time required during final installation, as the detection components are already configured and ready for deployment rather than requiring time-consuming individual connections to folded lead portions.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

By combining multiple detection components into a single integrated assembly held by the holding body, the patent reduces the number of separate connection operations required. This merging of components directly reduces the time needed to set up voltage detection, as the entire assembly can be installed as one unit rather than connecting individual lead lines separately.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS12613288B2Voltage detection device and battery module
Publication Date: 2026.04.28 ENVISION AESC JAPAN LTD
  • US12613288B2 patent drawing
  • US12613288B2 patent drawing
  • US12613288B2 patent drawing

AI summary

A first voltage detection device (30) detects a voltage of a lead portion (150) folded back between different battery cells (100). The first voltage detection device (30) includes a first voltage detection portion (410), a first voltage detection line (420) electrically connected to the first voltage detection portion (410), and a first holding body (300) holding the first voltage detection portion (410) and the first voltage detection line (420).