Charging Terminal Temperature Sensor Structure for Gap-Free Contact

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Solution Overview

Problem

Existing temperature measurement devices for charging terminals in new energy vehicles fail to maintain close contact due to gaps, leading to inaccurate temperature readings and potential charging failures.

Innovation Solution

A temperature measuring structure with a support and temperature measurement element, where the measurement face protrudes at a variable angle to ensure tight contact and apply pressure to the measured object, utilizing features like grooves, rotation shafts, and flexible hooks to facilitate accurate temperature measurement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the temperature measurement device is installed by attaching the charging terminal to the temperature measurement device after installing the charging terminal, then the installation process is simple, but the contacted area has tiny gaps due to lack of pressure, resulting in inaccurate temperature measurement

Engineering Contradiction:
Improveinstallation simplicityVSAvoidtemperature measurement accuracy
Core Design Contradiction:
Ease of manufactureVSMeasurement precision

Solution Approach 1:

The temperature measurement face is pre-configured to protrude from the support at a variable angle (1° to 27°) before the charging terminal is installed. This preliminary angular configuration ensures that when the charging terminal is mounted, it automatically applies pressure to the temperature measurement face, eliminating gaps and ensuring accurate temperature measurement without requiring additional pressure application steps.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The temperature measurement face is designed to protrude from the support surface at a variable angle rather than being flush with the support. This dimensional change creates a pressure application mechanism where the charging terminal, when installed, naturally presses against the angled measurement face, ensuring intimate contact and accurate measurement while maintaining installation simplicity.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Device complexity

If the temperature measurement face is parallel to the support surface, then the structure is simple, but the charging terminal cannot apply sufficient pressure to eliminate gaps, resulting in inaccurate temperature measurement

Engineering Contradiction:
Improvestructural simplicityVSAvoidtemperature measurement accuracy
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The temperature measurement face is designed to protrude from the support surface at a variable angle (1° to 27°) rather than being parallel to it. This angular configuration adds a dimensional element that enables the charging terminal to apply pressure to the measurement face during normal installation, eliminating gaps and ensuring accurate temperature measurement while maintaining overall structural simplicity.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The angle between the temperature measurement face and the support surface is changed from 0° (parallel) to a variable angle of 1° to 27°. This parameter change transforms the measurement face from a passive surface that cannot receive pressure to an active surface that automatically receives pressure from the installed charging terminal, thereby improving measurement accuracy without significantly increasing device complexity.

Inventive Principle:
Principle #35Parameter changes

3Ease of operation

If the temperature measurement device is not under pressure, then the installation is easy, but the contact area has gaps, causing the temperature control system to fail to adjust temperature in time, resulting in charging failure

Engineering Contradiction:
Improveinstallation easeVSAvoidcharging system reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The temperature measurement face is pre-configured to protrude at a variable angle (1° to 27°) from the support before installation. This preliminary angular configuration ensures that when the charging terminal is installed, it automatically applies pressure to the measurement face, eliminating gaps and ensuring reliable temperature measurement for timely temperature control adjustments, thereby preventing charging failure while maintaining easy installation.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The temperature measurement face is designed to protrude from the support surface at a variable angle rather than being flush with it. This dimensional change creates a mechanism where the charging terminal, when installed, naturally applies pressure to the angled measurement face, ensuring intimate contact and reliable temperature measurement for timely temperature control, thereby improving charging system reliability without complicating installation.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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

Ensures precise and timely temperature measurement by maintaining continuous contact, preventing detachment, and reducing maintenance time through improved attachment and pressure application.

Implementation Method 1

The contact-type temperature measurement device is simple, reliable and has high measurement accuracy. However, the temperature measurement device must be in contact with the measured medium before the temperature can be measured.

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentEP4400820B1Temperature measuring structure, charging device, and motor vehicle
Publication Date: 2026.01.28 CHANGCHUN JETTY AUTOMOTIVE PARTS CORPORATION
  • EP4400820B1 patent drawingFigure 1~2
  • EP4400820B1 patent drawingFigure 3~4
  • EP4400820B1 patent drawingFigure 5~6

AI summary

A temperature measuring structure, a charging device, and a motor vehicle. The temperature measuring structure including: a support and a temperature measurement element. The support has a first surface. The first surface is provided with an area accommodating the temperature measurement element. The temperature measurement element has a temperature measurement face. The temperature measurement face at least partially protrudes from the first surface, and the temperature measurement face is at a variable angle to the first surface. The temperature measuring structure can tightly attach the temperature measurement face of the temperature measurement element to a measured object, can apply a pressure to the measured object by the temperature measurement face without the aid of an additional device, so that the temperature measurement element measures temperature data closest to an actual temperature for the measured object, thus the staff or the corresponding processor can be aware of the temperature of the measured object more timely and accurately, thereby preventing the condition in which the temperature measurement face is separated from the measured object in subsequent use of the temperature measurement element.