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Device and method for testing air-heating PTC (Positive Temperature Coefficient) product

A technology for testing devices and products, used in measuring devices, testing of machine/structural components, instruments, etc.

Pending Publication Date: 2022-07-12
上海金脉汽车电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a test device and method for air-heated PTC products to solve the problem of testing air-heated PTC products with different structures and different heat dissipation areas at the same time on the same test device

Method used

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  • Device and method for testing air-heating PTC (Positive Temperature Coefficient) product
  • Device and method for testing air-heating PTC (Positive Temperature Coefficient) product
  • Device and method for testing air-heating PTC (Positive Temperature Coefficient) product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] figure 1 Embodiment 1 of the present invention provides a schematic structural diagram of a testing device for air heating PTC products, such as figure 1 As shown, the test device of the air heating PTC product includes an air duct 1, a fan 2, an inlet temperature detection part 3, an outlet wind speed detection part 4, an outlet temperature detection part 5 and an adjustment mechanism.

[0064] The fan 2 is arranged in the air duct 1, and the air duct 1 has a placement area 18 for placing the air heating PTC product 20 to be tested; wherein, the air duct 1 refers to the passage for air circulation, and the fan 2 can make the air flow in the air duct. 1 flows inside, and the placement area 18 refers to the area inside the air duct 1 for placing the air heating PTC product 20 to be tested.

[0065] The air duct 1 has an inlet 101 and an outlet 102. The inlet temperature detecting element 3 is arranged on the air duct 1 between the placement area 18 and the inlet 101. Th...

Embodiment 2

[0106] Figure 4 This is a flow chart of a method for testing an air heating PTC product provided in the second embodiment of the present invention. This embodiment can be applied to the test situation of an air heating PTC product, and this method is applied to the air heating described in any embodiment of the present invention. A test device for PTC products, the method can be performed by a test system for air-heating PTC products, and the test method for air-heating PTC products can be implemented in the form of hardware and / or software. The host computer of remote communication can execute the test method of the air heating PTC product through the host computer, or set a controller on the test device of the air heating PTC product to connect the controller with the inlet temperature detection piece, the outlet temperature detection piece and the outlet. The wind speed detection piece is electrically connected, and the test method of the wind heating PTC product is execut...

Embodiment 3

[0118] Image 6 This is a structural block diagram of a testing system for an air heating PTC product provided in Embodiment 3 of the present invention.

[0119] like Image 6 As shown, the test system of this air heating PTC product includes:

[0120] The obtaining module 100 is used to obtain the inlet air temperature, the outlet air temperature and the outlet air speed.

[0121] The determination module 200 is configured to determine the heat exchange efficiency of the product based on the inlet air temperature, the outlet air temperature and the outlet air speed.

[0122] Optionally, the heat exchange efficiency of the product is determined by the following formula:

[0123] η=[vout*t*S*ρ*c*(Tout−Tin)*t] / (VH*IH+VL*IL).

[0124] Among them, S is the heat exchange area of ​​the product, t is the assumed ventilation time, ρ is the air density, c is the air specific heat capacity, Tin is the inlet air temperature, Tout is the outlet air temperature, vout is the outlet air ...

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Abstract

The invention discloses a device and a method for testing an air heating PTC (Positive Temperature Coefficient) product. The testing device for the air-heating PTC product comprises an air duct, a fan, an inlet temperature detection piece, an outlet air speed detection piece, an outlet temperature detection piece and an adjusting mechanism, the fan is arranged in the air duct, and the air duct is internally provided with a placing area for placing a to-be-tested air heating PTC product; the air duct is provided with an inlet and an outlet, and the inlet temperature detection piece is arranged on the air duct between the placing area and the inlet and used for detecting the inlet temperature; the outlet air speed detection part and the outlet temperature detection part are arranged on the air duct between the placement area and the outlet, the outlet air speed detection part is used for detecting the outlet air speed, and the outlet temperature detection part is used for detecting the outlet temperature; the adjusting mechanism is used for adjusting the sectional area of the air duct. By adopting the scheme, the testing device has the beneficial effect that the same testing device can be used for testing the wind-heating PTC products with different structures and different heat dissipation areas at the same time.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of testing devices, and in particular, to a testing device and method for air heating PTC products. Background technique [0002] Based on the current development status of new energy vehicles, the demand for auto parts is increasing, and the thermal management module is more prominent. Compared with household air conditioners, the use environment and requirements of car air conditioners are more severe, which has led to the birth of a heater. According to the different heating media, it is divided into air heating type heaters for short air heating PTC and plumbing heaters for short water heating PTC. [0003] At present, it is difficult for air heating PTC products to simultaneously satisfy the test problems of air heating PTC products with different structures and different heat dissipation areas on the same test device. SUMMARY OF THE INVENTION [0004] The invention provides a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M99/00
CPCG01M99/008G01M99/005G01M99/002
Inventor 朱长富杨龙周正
Owner 上海金脉汽车电子有限公司