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Cooler

A cooler and refrigerant technology, applied in cooling/ventilation/heating transformation, semiconductor devices, electric solid devices, etc., can solve the problems of inability to cool batteries efficiently and uniformly, temperature unevenness, etc., achieve efficient and uniform cooling, suppress Effect of temperature deviation and suppression of turbulent flow

Pending Publication Date: 2021-03-09
NIPPON LIGHT METAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, there is a temperature boundary layer caused by a temperature difference between a plurality of battery cells, so temperature unevenness (temperature variation) occurs on the surface of the cooler, and there is a problem that the battery cannot be cooled efficiently and uniformly

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0064] Hereinafter, the analysis for examining the temperature nonuniformity (temperature variation) on the surface of the coolers (Examples 1 and 2) of the present invention and coolers not provided with protrusions (Comparative Examples 1 and 2) will be described.

[0065]

[0066] ·Corrugated fins

[0067] Thickness: 0.3mm, gap (distance between mountains and valleys): 1.5mm, length: 100mm

[0068] · Protrusion

[0069] Height: 1mm, Width: 2mm

[0070] ·Heating Department

[0071] Calorific value: 360W×2

[0072]

[0073] Density: 1038kg / m 3

[0074] Viscosity: 0.00128Pa·s

[0075] Specific heat: 3482J / (kgK)

[0076] Thermal conductivity: 0.424W / (mK)

[0077] Assume that the periphery of the cooler is all insulated, and all heat generated is cooled by heat exchange between the corrugated fins and the refrigerant. ANSYS Icepak R18.1 was used in the analysis.

[0078] Under the above conditions, after analyzing the situation where the refrigerant flow rate is 10...

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Abstract

The present invention provides a cooler for which the development of temperature deviation of a heating element such as a battery, etc., is suppressed, temperature deviation of the cooler surface is suppressed, and it is possible to efficiently and uniformly cool the heating element. This cooler comprises: an upper plate (10) on the heat receiving surface side; a lower plate (20) that faces the upper plate in parallel and sandwiches a refrigerant flow path (2) therebetween; and corrugated fins (30) that are disposed between the upper plate and the lower plate. In the cooler, a plurality of thecorrugated fins are disposed orthogonally with respect to the refrigerant flow path at appropriate intervals in the refrigerant flow direction, both refrigerant-flow-direction side parts of each corrugated fin are positioned by a projection (11) provided projecting at either of the upper plate or the lower plate, the upper plate and the lower plate are linked by a junction (21) that is provided projecting at one of the plates and is joined to the other plate, and the peripheral parts of both plates are joined.

Description

technical field [0001] The present invention relates to a cooler for cooling heat generated from, for example, a vehicle battery of an electric vehicle or a hybrid vehicle, a power device such as an inverter, a semiconductor element, and the like. Background technique [0002] Generally, in vehicles such as electric vehicles and hybrid vehicles, batteries are used as power sources for motors that drive the vehicles. [0003] The battery not only drives the motor to accelerate the vehicle when the vehicle starts and runs, but also brakes to control the vehicle during an emergency stop. Therefore, a large-capacity battery is used. [0004] Therefore, in order to suppress performance degradation due to temperature rise of the battery, it is necessary to forcibly use a cooler to cool the battery. [0005] As a conventional cooler of this type, a structure is known in which a refrigerant passage is provided inside a cooling plate (cooler) arranged at the bottom of the battery, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/6556H01L23/473H01M10/613H01M10/625H01M10/6551H01M10/6554H05K7/20
CPCH01M10/6551H01M10/625H01L23/473H01M10/6556Y02E60/10H01L23/3672H01M2220/20
Inventor 平野裕中村拓海
Owner NIPPON LIGHT METAL CO LTD
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