Exterior Temperature Sensor Mounting on Heat Exchange Tube
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Solution Overview
Problem
Existing battery pack temperature control devices require a hole in the heat exchange tube for temperature sensor installation, leading to refrigerant leakage due to aging sealing rings.
Innovation Solution
A temperature detecting device with a housing and a fixed part that allows the temperature sensor to be attached to the outer surface of the heat exchange tube, eliminating the need for an opening and preventing refrigerant leakage by using a U-shaped sheet structure and arc grooves for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a hole is provided in the heat exchange tube for temperature sensor installation, then temperature detection is enabled, but refrigerant leakage occurs due to aging sealing rings
Solution Approach 1:
The temperature sensor is extracted from the heat exchange tube interior and relocated to the exterior surface. The sensing portion contacts the outer surface of the heat exchange tube through a window in the housing, eliminating the need for penetration into the sealed tube. This extraction resolves the contradiction by enabling temperature detection without compromising the sealing integrity of the heat exchange tube.
2Measurement precision
If a temperature sensor is installed inside the heat exchange tube, then accurate temperature measurement is achieved, but the sealing ring ages and causes leakage
Solution Approach 1:
The housing with its window structure serves as an intermediary between the temperature sensor and the heat exchange tube. The sensing portion of the temperature sensor contacts the outer surface of the heat exchange tube through the window, allowing thermal energy to be detected without direct penetration into the sealed tube interior. This intermediary structure enables accurate temperature measurement while preventing refrigerant leakage by maintaining the seal integrity.
3Measurement precision
If the temperature sensor protrudes from the heat exchange tube, then temperature detection is possible, but the sealing ring is susceptible to aging and failure
Solution Approach 1:
The temperature sensor assembly is extracted from the heat exchange tube interior and repositioned externally. The housing contains the temperature sensor with its sensing portion contacting the outer surface through a window, eliminating the need for the sensor to protrude into or through the tube. This extraction extends the sealing ring service life by removing the source of aging and failure while maintaining temperature detection capability.
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
Enables accurate temperature detection without opening the heat exchange tube, preventing coolant leakage and enhancing safety by maintaining a sealed system.
Implementation Method 1
a sensing portion of the temperature sensor is located on a surface of the housing... the sensing portion of the temperature sensor closely fitted to the object, thereby can accurately detect the temperature of the object
Data Source
AI summary
A temperature detecting device is provided, which includes a housing, a temperature sensor and a fixed part. A battery pack is further provided, which includes two or more battery cells, a heat exchange tube, and the temperature detecting device. The temperature detecting device is fixed to an outer surface of the heat exchange tube, and a temperature detecting surface of the temperature detecting device is fitted to the outer surface of the heat exchange tube.