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Temperature measuring device and method for measuring specific heat capacity and thermal conductivity

A technology of temperature measurement and measurement method, which is applied in the direction of measuring devices, measuring heat, thermometers, etc., can solve the problems of equipment that cannot find specific heat capacity and thermal conductivity, etc., to reduce radiation heat loss, reduce measurement error, and reduce heat leakage loss effect

Pending Publication Date: 2018-11-09
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0007] After a long period of research, no equipment capable of simultaneously measuring the specific heat capacity and thermal conductivity of larger blocks has been found.

Method used

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  • Temperature measuring device and method for measuring specific heat capacity and thermal conductivity
  • Temperature measuring device and method for measuring specific heat capacity and thermal conductivity
  • Temperature measuring device and method for measuring specific heat capacity and thermal conductivity

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Embodiment Construction

[0055] A temperature measuring device and a measuring method of specific heat capacity and thermal conductivity are used to measure the temperature of an object 3 to be measured. The temperature measuring device includes: a vacuum box 11; a radiation heating box 13 located in the vacuum box 11; The outer surface of the heating box 13 is provided with an electric heating wire, and the object 3 to be measured is placed in the center of the radiant heating box 13; a power source 21 is used to heat the radiant heating box 13; a temperature data collector 23 includes a plurality of thermocouples , Wherein a part of the plurality of thermocouples is provided on each surface of the object 3 to be measured, and another part of the plurality of thermocouples is provided on the surface of the radiant heating box 13. On the other hand, a measuring method based on the specific heat capacity and thermal conductivity of the temperature measuring device is provided.

[0056] In order to make th...

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Abstract

The invention provides a temperature measuring device used for measuring the temperature of a to-be-measured object (3). The temperature measuring device comprises a vacuum box (11), a radiation heating box (13), a power supply (21) and a temperature data acquisition unit (23), wherein the radiation heating box (13) is positioned in the vacuum box (11); an electrically heated wire is arranged on the outer surface of the radiation heating box (13); the to-be-measured object (3) is arranged in the center of the radiation heating box (13); the power supply (21) is used for heating the radiation heating box (13); the temperature data acquisition unit (23) comprises multiple thermocouples; part of the multiple thermocouples are arranged on each surface of the to-be-measured object (3); and theother part of the multiple thermocouples are arranged on the surface of the radiation heating box (13). In addition, the invention further provides a method for measuring specific heat capacity and thermal conductivity based on the temperature measuring device.

Description

Technical field [0001] The invention relates to the technical field of temperature measurement, in particular to a temperature measuring device and a measuring method of specific heat capacity and thermal conductivity. Background technique [0002] In recent years, electric vehicles that use batteries as power sources or auxiliary power sources have developed rapidly. For example, lead-acid batteries are widely used in low-speed vehicles in China, and nickel-hydrogen batteries are widely used in Toyota series hybrid electric vehicles. Due to the advantages of high energy density, long cycle life and low self-discharge rate, lithium-ion batteries represent the future development direction in the field of power batteries. In addition to the field of electric vehicles, lithium-ion batteries are also widely used in aerospace, shipbuilding and other fields, as well as some military equipment. However, the performance of lithium-ion batteries is greatly affected by temperature. Higher...

Claims

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Application Information

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IPC IPC(8): G01K7/02G01N25/20
CPCG01K7/02G01N25/20
Inventor 谭思聪郭聪王涛李铁姜玉雁
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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