CN-122028377-A - Liquid cooling device and design parameter determining method and equipment thereof

CN122028377ACN 122028377 ACN122028377 ACN 122028377ACN-122028377-A

Abstract

The application relates to a liquid cooling device and a method and equipment for determining design parameters thereof, and relates to the technical field of heat dissipation, wherein the liquid cooling device comprises a liquid cooling plate, a through liquid cooling runner is arranged in the liquid cooling plate, and the liquid cooling runner is provided with an inlet and an outlet; the liquid cooling plate comprises a first liquid cooling part, a second liquid cooling part and a third liquid cooling part connected with the first liquid cooling part and the second liquid cooling part, the first liquid cooling part and the second liquid cooling part are oppositely arranged, an accommodating space is formed by surrounding the first liquid cooling part, the second liquid cooling part and the third liquid cooling part together, and two sides of the liquid cooling plate and/or the accommodating space are/is used for arranging heating devices. The application realizes the fusion of the double-sided cloth piece and the internal space by designing the liquid cooling plate structure, improves the space utilization rate, reduces the sizes of the liquid cooling plate and the whole machine, realizes the coupling heat dissipation of liquid cooling and air cooling by arranging the air-liquid heat exchanger or the fin structure, thereby improving the heat dissipation performance and realizing the miniaturization, high power density and low cost of equipment.

Inventors

XU JUWU
HUANG KUN
ZHANG CHUANMIN

Assignees

上海思格数字技术有限公司

Dates

Publication Date: 20260512
Application Date: 20260326

Claims (14)

1. The liquid cooling device is characterized by comprising a liquid cooling plate, wherein a through liquid cooling runner is arranged in the liquid cooling plate and is provided with an inlet and an outlet; The liquid cooling plate comprises a first liquid cooling part, a second liquid cooling part and a third liquid cooling part connected with the first liquid cooling part and the second liquid cooling part, the first liquid cooling part and the second liquid cooling part are oppositely arranged, and an accommodating space is formed by surrounding the first liquid cooling part, the second liquid cooling part and the third liquid cooling part together; the two sides of the liquid cooling plate and/or the accommodating space are/is used for arranging heating devices.
2. The liquid cooling device according to claim 1, wherein the heat generating devices are disposed on both sides of the liquid cooling plate, and the heat generating devices are disposed in the accommodating space.
3. The liquid cooling apparatus according to claim 1, further comprising a wind-liquid heat exchanger, wherein the wind-liquid heat exchanger is in communication with the liquid cooling flow passage.
4. The liquid cooling apparatus according to claim 3, wherein the air-liquid heat exchanger is provided on the liquid cooling plate and communicates with the liquid cooling flow passage.
5. The liquid cooling apparatus according to claim 3, wherein the wind-liquid heat exchanger is disposed on an inlet side or an outlet side of the liquid cooling plate and communicates with an inlet or an outlet of the liquid cooling flow passage.
6. The liquid cooling device of claim 3, wherein the liquid cooling plate is further provided with a liquid cooling branch, two ends of the liquid cooling branch are respectively connected with the first liquid cooling part and the second liquid cooling part and are communicated with the liquid cooling flow channel, and the wind-liquid heat exchanger is connected in series on the liquid cooling branch.
7. The liquid cooling apparatus according to claim 1, further comprising a fin structure provided on the liquid cooling plate.
8. The liquid cooling device according to claim 1, further comprising a heat conductive layer, wherein the heat conductive layer is disposed on the surface of the liquid cooling plate, and the heat generating element is disposed on the surface of the liquid cooling plate through the heat conductive layer.
9. The equipment is characterized by comprising a machine case and the liquid cooling device as claimed in any one of claims 1-8, wherein a device area and a liquid cooling area are arranged in the machine case, the liquid cooling device is arranged in the liquid cooling area, and the device area is used for placing equipment; The device comprises a device area, a plurality of fans, at least one heating device and/or equipment devices, wherein the fans are arranged in the device area, the air outlet direction of at least one fan faces the heating device in the accommodating space, and/or the air outlet direction of at least one fan faces the equipment devices in the device area.
10. A design parameter determining method for a liquid cooling device, which is applied to the liquid cooling device as claimed in any one of claims 1 to 8, is characterized by comprising the following steps: Determining physical property parameters of the cooling liquid and heat dissipation requirement parameters of the liquid cooling plate according to design requirements; determining the total volume flow of the cooling liquid according to the physical property parameters of the cooling liquid and the heat dissipation requirement parameters of the liquid cooling plate; And determining the size and length of the flow passage of the liquid cooling plate according to the total volume flow of the cooling liquid and the heat dissipation requirement parameters of the liquid cooling plate.
11. The method for determining the design parameters of the liquid cooling device according to claim 10, wherein the method for determining the total volume flow of the cooling liquid according to the physical property parameters of the cooling liquid and the heat dissipation requirement parameters of the liquid cooling plate comprises the following steps: The liquid cooling plate heat dissipation demand parameters comprise total heat, and the cooling liquid physical parameters comprise cooling liquid specific heat capacity and cooling liquid density: determining the mass flow of the cooling liquid according to the total heat, the specific heat capacity of the cooling liquid and the preset total temperature rise; And determining the total volume flow of the cooling liquid according to the mass flow of the cooling liquid and the density of the cooling liquid.
12. The method for determining the design parameters of the liquid cooling device according to claim 11, wherein the determining the size and the length of the flow channel of the liquid cooling plate according to the total volume flow of the cooling liquid and the heat dissipation requirement parameter of the liquid cooling plate comprises the following steps: the heat dissipation requirement parameters of the liquid cooling plate comprise heat required to be taken away by the liquid cooling plate and the average temperature of cooling liquid; Determining a liquid convection heat exchange coefficient according to the total volume flow of the cooling liquid and the preset section parameters of part of liquid cooling flow channels of the liquid cooling plate; Determining the heat exchange area of the inner wall required by the liquid cooling plate according to the liquid convection heat exchange coefficient, the heat required to be taken away by the liquid cooling plate, the temperature of a bottom plate of a heating device preset on the liquid cooling plate and the average temperature of the cooling liquid; And determining the length of the flow channel of the liquid cooling plate according to the heat exchange area of the inner wall required by the liquid cooling plate.
13. The method for determining design parameters of a liquid cooling apparatus according to claim 12, further comprising: under the condition that the liquid cooling device is provided with a wind-liquid heat exchanger, determining the volume flow of the air side of the wind-liquid heat exchanger according to the heat consumption, the specific heat capacity of air and the allowable temperature rise of a heating device preset outside the liquid cooling plate, which are needed to be taken away by the wind-liquid heat exchanger; Determining the convective heat transfer coefficient of the air side according to the volume flow of the air side and the preset parameters of the fin or flat tube part of the wind-liquid heat exchanger; Determining a total heat transfer coefficient according to the air side convective heat transfer coefficient and the liquid convective heat transfer coefficient; Determining a logarithmic average temperature difference according to the outlet temperature and the inlet temperature of the wind-liquid heat exchanger, wherein the outlet temperature and the inlet temperature are determined according to the heat consumption needing to be taken away by the wind-liquid heat exchanger; determining the required heat exchange area of the wind-liquid heat exchanger according to the heat consumption required to be taken away by the wind-liquid heat exchanger, the logarithmic average temperature difference and the total heat transfer coefficient; and determining the core volume of the wind-liquid heat exchanger according to the required heat exchange area of the wind-liquid heat exchanger.
14. The method for determining design parameters of a liquid cooling apparatus according to claim 12, further comprising: under the condition that the cooling fins are arranged in the liquid cooling plate flow channel, physical parameters of the cooling fins are obtained; determining fin efficiency according to physical parameters of the radiating fins; updating the heat exchange area of the inner wall required by the liquid cooling plate according to the fin efficiency and the fin area; and updating the length of the liquid cooling plate flow channel according to the updated heat exchange area of the inner wall required by the liquid cooling plate.

Description

Liquid cooling device and design parameter determining method and equipment thereof Technical Field The present application relates to the field of heat dissipation technologies, and in particular, to a liquid cooling device, and a method and an apparatus for determining design parameters thereof. Background With the rapid development of new energy industry, power and thermal load of power conversion equipment such as an inverter, an energy storage converter and other electronic equipment are continuously increased, and a liquid cooling heat dissipation scheme is widely adopted due to excellent heat dissipation performance. At present, the existing liquid cooling scheme mostly adopts a single-sided liquid cooling mode, namely, heating devices such as a high-power module and an inductor are attached to one surface of a liquid cooling plate facing the inside of a case through interface materials (such as heat conduction silicone grease), the whole liquid cooling plate is used as a sealing surface of the case, and a PCBA (printed circuit board assembly) in the case performs blowing and heat dissipation through a fan. Although the single-sided liquid cooling heat dissipation mode can solve the heat dissipation problem of the equipment to a certain extent, the single-sided liquid cooling heat dissipation mode still has the defects in practical application. Because the liquid cooling plate can only utilize one side of the liquid cooling plate to dissipate heat, the required area of the liquid cooling plate is larger, the size of the whole machine in the length direction is increased, the heat dissipation cost is increased, and the further improvement of the power density of equipment is limited. Disclosure of Invention The application provides a liquid cooling device, a method and equipment for determining design parameters thereof, and aims to solve the technical problems of large liquid cooling plate area, large whole machine size, high heat dissipation cost and difficulty in improving power density caused by a single-sided liquid cooling scheme in the prior art. The application provides a liquid cooling device and a method and equipment for determining design parameters thereof, which adopt the following technical scheme: The liquid cooling device comprises a liquid cooling plate, wherein a through liquid cooling runner is arranged in the liquid cooling plate and is provided with an inlet and an outlet; The liquid cooling plate comprises a first liquid cooling part, a second liquid cooling part and a third liquid cooling part connected with the first liquid cooling part and the second liquid cooling part, the first liquid cooling part and the second liquid cooling part are oppositely arranged, and an accommodating space is formed by surrounding the first liquid cooling part, the second liquid cooling part and the third liquid cooling part together; the two sides of the liquid cooling plate and/or the accommodating space are/is used for arranging heating devices. By adopting the technical scheme, the heating devices can be attached to the two sides of the liquid cooling plate, the unit area utilization rate of the liquid cooling plate is improved, devices which originally need to be contained by the liquid cooling plate with larger area can be integrated on the front side and the back side of the same liquid cooling plate, so that the whole size of the liquid cooling plate is reduced, meanwhile, the heat generating devices which originally need to occupy the space of a chassis independently are installed in the containing space through the containing space formed by surrounding the first liquid cooling part, the second liquid cooling part and the third liquid cooling part, the fusion of the liquid cooling plate and the device installation space is realized, the space utilization rate is further improved, the containing space is enabled to have the characteristic of three-side liquid cooling by the surrounding structure, the heat generating devices which are located in the containing space can obtain radiation heat dissipation or convection heat dissipation from multiple directions, the heat dissipation effect is better, and local hot spots are avoided. In a specific implementation manner, the heating devices are arranged on two sides of the liquid cooling plate, and the heating devices are placed in the accommodating space. Through adopting above-mentioned technical scheme, the equal subsides of both sides of liquid cooling board are installed the device that generates heat, have realized the make full use of two-sided liquid cooling, also place the device that generates heat in the accommodation space simultaneously for the liquid cooling board body and its interior space that encloses and close the formation all obtain effective utilization, this structure is convenient for utilize the heat radiating area of liquid cooling board in the limited space maximize, and further helping hand equipment is miniaturized