Capacitor Module Temperature Sensor Placement for Thermal Monitoring
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Solution Overview
Problem
Existing capacitor modules fail to accurately detect thermal damage from both the capacitor and other electronic elements, and the assembly process is hindered by difficulties in positioning the wire harness in the resin mold before it hardens.
Innovation Solution
A capacitor module configuration that includes a capacitor, a seal member, an electronic element, a temperature sensor, and a wire member, where the temperature sensor is located between the electronic element and the capacitor via the seal member, and the holder fixes the temperature sensor and wire member to the seal member, allowing for accurate thermal damage detection and improved assembly workability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the temperature sensor is arranged close to the capacitor in the resin mold, then the detection of heat generated from the capacitor is improved, but the detection of thermal damage from other electronic elements is insufficient
Solution Approach 1:
The patent divides the temperature sensing function into multiple locations: one temperature sensor is arranged close to the capacitor for detecting capacitor heat, while another temperature sensor is positioned near other electronic elements for detecting their heat. This segmentation allows independent monitoring of thermal conditions from different heat sources, resolving the contradiction between detecting capacitor heat and detecting thermal damage from other elements.
2Ease of operation
If the wire harness is arranged in the resin mold before hardening, then the temperature sensor can be connected to the controller, but the positioning and assembly workability are reduced
Solution Approach 1:
The patent applies preliminary action by pre-arranging the wire harness and temperature sensor in a specific position within the resin mold before the resin hardens. The wire harness is positioned to pass through the resin mold and connect the temperature sensor to the controller, ensuring proper connectivity is established before the final assembly step. This preliminary positioning resolves the contradiction by ensuring connections are made during the mold state when positioning is still flexible.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enables reliable detection of thermal damage from and to the capacitor while simplifying the assembly process by ensuring the wire member is correctly positioned and securely connected.
Implementation Method 1
a temperature sensor (40) that measures a temperature around the capacitor (11)
Data Source
AI summary
In a capacitor module, a capacitor, a seal member that seals the capacitor, an electronic element electrically connected to the capacitor, a temperature sensor that measures a temperature around the capacitor, and a wire member electrically connected to the temperature sensor are provided. A holder holds at least the electronic element, the temperature sensor, and the wire member. The holder is fixed to the seal member while the temperature sensor is located between the electronic element and at least part of the capacitor via the seal member.