阅读说明：本技术 一种智能响应的自适应均热板结构 (Intelligent response self-adaptive vapor chamber structure ) 是由 袁雪鹏 汤勇 张仕伟 李宗涛 颜才满 于 2021-06-29 设计创作，主要内容包括：本发明提供一种智能响应的自适应均热板结构,包括均热板、槽道吸液芯以及工质流体,所述均热板包括上板体和下板体,所述上板体和下板体之间设有腔室；所述上板体底面和所述下板体顶面均设有若干槽道,所述上板体和下板体上的所述槽道均并排设置,所述上板体上的若干槽道和所述下板体上的若干槽道均构成槽道吸液芯,所述槽道内部内嵌有热缩型水凝胶；所述腔室内封存有工质流体。该自适应均热板结构其具有快速散热的性能,同时可以保证电子设备工作温度稳定且不受环境和输出功率影响。(The invention provides an intelligent response self-adaptive vapor chamber structure which comprises a vapor chamber, a channel liquid absorption core and working medium fluid, wherein the vapor chamber comprises an upper plate body and a lower plate body, and a cavity is arranged between the upper plate body and the lower plate body; the bottom surface of the upper plate body and the top surface of the lower plate body are respectively provided with a plurality of channels, the channels on the upper plate body and the lower plate body are arranged side by side, the channels on the upper plate body and the channels on the lower plate body form channel liquid absorption cores, and the channels are internally embedded with heat-shrinkable hydrogel; working fluid is sealed in the chamber. The self-adaptive vapor chamber structure has the performance of quick heat dissipation, and can ensure that the working temperature of the electronic equipment is stable and is not influenced by the environment and the output power.)

1. An intelligently responsive adaptive vapor chamber structure comprising:

the vapor chamber comprises a vapor chamber body and a vapor chamber body, wherein the vapor chamber body comprises an upper plate body and a lower plate body;

the heat-shrinkable hydrogel heat-shrinkable film comprises an upper plate body, a lower plate body and a plurality of grooves, wherein the upper plate body is provided with a heat-shrinkable film, the lower plate body is provided with a heat-shrinkable film, the heat-shrinkable film is provided with a plurality of grooves, and the grooves are arranged in parallel; and

the working medium fluid is sealed in the cavity.

2. The smart responsive adaptive thermal spreader structure of claim 1 wherein the thermal spreader is configured in a quadrilateral, circular or trapezoidal shape depending on the desired heat transfer shape.

3. The smart responsive adaptive vapor chamber structure of claim 1 wherein the vapor chamber channel cross-sectional shape is trapezoidal or V-shaped or inverted Ω -shaped.

4. The smart responsive adaptive heat spreader structure of claim 1 wherein the channel lumens are filled in whole or in part with the heat shrink hydrogel.

5. The intelligently responsive adaptive soaking plate structure according to claim 1, wherein one of the channel cavities of any adjacent two of the channels on the upper or lower plate body is completely filled with the heat-shrinkable hydrogel and the other channel is partially filled with the shrinkable hydrogel.

6. The intelligently responsive adaptive soaking plate structure according to claim 1, wherein the channels on the upper and lower plate bodies are straight channels or curved channels, and the channels on the upper and lower plate bodies are distributed at equal intervals or in gradual change.

7. The intelligent response adaptive soaking plate structure according to claim 1, wherein the working fluid is one or a mixture of deionized water, ammonia, methanol, freon and acetone.

Technical Field

The invention relates to the technical field of vapor chambers, in particular to an intelligent response self-adaptive vapor chamber structure.

Background

Electronic components are easy to age in high temperature environment, mainly caused by mechanical stress change caused by material thermal expansion due to material crystal structure easy to deform under thermal induction. During operation of the device, most electronic equipment is often exposed to thermal conditions from various sources, such as sunlight, ambient temperature, during the day, reaching maximum temperatures at noon and minimum temperatures at night, with diurnal temperature differences of up to 60 ℃ in some places. The electronic devices may also have different operating temperatures due to different loads and different output powers during operation. The normal service life of an electronic device is greatly compromised by high temperature and continuous thermal cycling.

High-power equipment is established ties by the miniwatt equipment more and is formed, and if electric automobile power battery at present adopts more low capacity battery series-parallel connection to form in order to satisfy the demand of high energy, will produce a large amount of heats when the battery cell takes place thermal runaway, and then leads to the inside thermal runaway of group battery, and the demand of local quick radiating can't be satisfied to present power battery radiating mode.

Therefore, how to provide a heat dissipation plate to ensure that the temperature of the electronic equipment does not change along with the output power and the environmental change during the operation, that is, ensure that the electronic equipment operates in a reasonable temperature range, and simultaneously ensure that the temperatures of a plurality of discrete devices in the equipment are consistent, that is, the requirement of local rapid heat dissipation is an important research direction for ensuring that the service life of the electronic equipment reaches the design service life. The self-adaptive soaking plate with the intelligent response function can meet the requirement of electronic equipment, and has important significance for ensuring the normal service life of the electronic equipment.

The heat-shrinkable hydrogel refers to a network polymer which undergoes a shrinkage-swelling discontinuous volume phase change with a temperature change, and the temperature at which the phase change occurs is called the lowest critical transition temperature. The polymer network contains a certain amount of hydrophilic and hydrophobic groups, and under different temperature conditions, the hydrophilic and hydrophobic properties in the polymer network groups are different, so that moisture can be released and absorbed, the volume of the hydrogel is obviously changed, and the hydrogel is in two different states of swelling and shrinking. When the temperature exceeds the lowest critical transition temperature, the volume of the heat-shrinkable hydrogel is reduced and is in a shrinking state, and the volume shrinkage is larger as the temperature is higher, and the volume is recovered as the temperature is reduced.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the utility model provides an adaptive soaking plate structure of intelligent response, it has quick radiating performance, can guarantee that electronic equipment operating temperature is stable and not influenced by environment and output.

In order to solve the technical problems, the technical scheme of the invention is as follows: an intelligent response self-adaptive vapor chamber structure comprises a vapor chamber, a channel liquid absorption core and working medium fluid,

the soaking plate comprises an upper plate body and a lower plate body, and a cavity is arranged between the upper plate body and the lower plate body; the bottom surface of the upper plate body and the top surface of the lower plate body are respectively provided with a plurality of channels, the channels on the upper plate body and the lower plate body are arranged side by side, the channels on the upper plate body and the channels on the lower plate body form channel liquid absorption cores, and the channels are internally embedded with heat-shrinkable hydrogel; working fluid is sealed in the chamber.

Preferably, the soaking plate is designed into a quadrilateral shape, a circular shape or a trapezoidal shape according to the required heat transfer shape.

Preferably, the cross section of the soaking plate channel is trapezoidal or V-shaped or inverted omega-shaped.

Preferably, the channel lumen is filled, in whole or in part, with the heat-shrinkable hydrogel.

Preferably, one of the channel cavities of any two adjacent channels on the upper or lower plate body is completely filled with the heat-shrinkable hydrogel and the other channel is partially filled with the shrinkable hydrogel.

Preferably, the channels on the upper plate body and the lower plate body are straight channels or curved channels, and the channels on the upper plate body and the lower plate body are distributed at equal intervals or in a gradual change mode.

Preferably, the working fluid is one or a mixture of deionized water, ammonia, methanol, freon and acetone.

Compared with the existing vapor chamber, the vapor chamber has the following technical effects:

(1) the intelligent response self-adaptive vapor chamber structure is provided with a channel liquid absorbing core, the thermal shrinkage type hydrogel is not deformed under the condition that the temperature is lower than the critical shrinkage temperature of the thermal shrinkage type hydrogel, and the vapor chamber has certain heat dissipation capacity.

(2) When the temperature exceeds the transition temperature, on one hand, the embedded part of the thermal shrinkage type hydrogel shrinks, the capillary capacity of the channel liquid absorption core is improved by improving the depth-to-width ratio of the channel, and the heat dissipation capacity of the vapor chamber is improved; on the other hand, the heat shrinkage type hydrogel is filled in the channels, the heat shrinkage type hydrogel shrinks to improve the capillary capacity of the liquid absorption cores of the channels through increasing the capillary structures so as to improve the heat dissipation capacity of the soaking plate, and the temperature of the electronic component equipment is not influenced by the change of the environment and the power through the change.

(3) When the local temperature of the soaking plate rises, the heat-shrinkable hydrogel of the channel liquid suction core in the hot spot shrinks, the capillary capacity of the area is increased, the heat dissipation capacity of the area of the soaking plate is enhanced, and the purpose of temperature equalization is achieved.

(4) The thermal shrinkage hydrogel in the channel wick has the lowest deformation temperature, so that the vapor chamber has intelligent characteristics; when the temperature reaches the lowest deformation temperature, the heat-shrinkable hydrogel begins to deform, and the deformation shrinkage amount of the heat-shrinkable hydrogel changes along with the temperature, so that the capillary capacities of the channel liquid suction cores are different, namely the heat dissipation capacities of the soaking plates are different, and the heat-shrinkable hydrogel has the capacity of automatic opening and self-adaption. Meanwhile, the heat shrinkage type hydrogel is reversible along with the temperature deformation, so that the soaking plate can be repeatedly used.

(5) Compared with other temperature equalizing systems, the intelligent response self-adaptive soaking plate does not need a temperature sensor, a feedback system and an execution system, so that the whole structure is simpler and more economic.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic diagram of an adaptive soaking plate structure with intelligent response;

FIG. 2 is a schematic side view of an intelligent response adaptive vapor chamber;

in the figure, 1, an upper plate body; 2. a lower plate body; 3. a channel liquid absorption core; 4. a chamber; 5. a heat-shrinkable hydrogel; 6. and a liquid injection hole.

Detailed Description

The invention is described in further detail below with reference to the figures and the detailed description.

As shown in fig. 1-2, an intelligent response adaptive vapor chamber structure comprises: the vapor chamber comprises a vapor chamber, a channel liquid absorption core 3 and working medium fluid, wherein the vapor chamber comprises an upper plate body 1 and a lower plate body 2, and a cavity 4 is arranged between the upper plate body 1 and the lower plate body 2; the soaking plate is designed into a quadrilateral shape, a circular shape or a trapezoidal shape according to the required heat transfer shape.

The bottom surface of the upper plate body 1 and the top surface of the lower plate body 2 are respectively provided with a plurality of channels, the channels on the upper plate body 1 and the lower plate body 2 are arranged side by side, and the cross section of each soaking plate channel is trapezoidal or V-shaped or inverted omega-shaped. The channels on the upper plate body 1 and the lower plate body 2 are straight channels or curved channels, and the channels on the upper plate body 1 and the lower plate body 2 are distributed at equal intervals or in a gradual change mode. The channel depth and the plate thickness are not substantially limited, and the deeper the channel depth, the better.

The plurality of channels on the upper plate body 1 and the plurality of channels on the lower plate body 2 form a channel liquid absorption core 3, and the inner cavity of each channel is completely or partially filled with heat-shrinkable hydrogel 5. As a preferred embodiment, one of the channel cavities of any two adjacent channels on the upper or lower plate body 1 or 2 is completely filled with the heat-shrinkable hydrogel 5 and the other channel is partially filled with the shrinkable hydrogel.

Working fluid is sealed and stored in the chamber 4, and the working fluid is one or a mixture of several of deionized water, ammonia, methanol, freon and acetone.

The thermal shrinkage type hydrogel 5 has the lowest shrinkage deformation temperature, so that when the thermal soaking plate is lower than the shrinkage temperature of the thermal shrinkage type hydrogel 5, the volume of the thermal shrinkage type hydrogel is not changed, and the original channel liquid suction core 3 structure has certain heat dissipation capacity. When the minimum shrinkage deformation temperature is exceeded, the hydrogel in the channel begins to shrink and its amount of shrinkage increases with increasing temperature, and its volume swells as the temperature decreases.

For the structure that the inner cavity part of the channel is filled with the thermal shrinkage type hydrogel 5, the depth-to-width ratio of the channel is increased along with the shrinkage of the hydrogel embedded in the channel liquid absorption core 3, and the higher the temperature is, the larger the value is, so that the capillary capacity of the channel liquid absorption core 3 is enhanced, and the heat dissipation capacity of the soaking plate is enhanced.

For the structure that the inner cavity of the channel is completely filled with the heat-shrinkable hydrogel 5, the number of the channels of the channel liquid absorption core 3 is increased along with the shrinkage of the structure, so that the capillary capacity of the channel liquid absorption core 3 is enhanced, and the heat dissipation capacity of the vapor chamber is further enhanced.

In summary, due to the characteristics of the heat-shrinkable hydrogel 5, when the minimum shrinkage deformation temperature is exceeded, the aspect ratio and the number of the channels of the channel wicks 3 are increased, so that the capillary capacity of the channel wicks 3 is enhanced, and the heat dissipation capacity of the vapor chamber is enhanced accordingly. The characteristic of the soaking plate ensures that the heat dissipation electronic equipment is not influenced by environment and output power change, ensures that the equipment works in a design temperature range and reaches the design service life. Meanwhile, aiming at equipment needing local heat dissipation, the local heat dissipation capacity of the equipment can be improved by increasing the local capillary capacity, the temperature equalization effect is achieved, the heat dissipation effect and the temperature consistency are ensured, namely the local heat dissipation requirement of the equipment is also ensured by the characteristics of the heat shrinkage type hydrogel 5, and the service life of the equipment is prolonged. The thermal shrinkage type hydrogel 5 has recoverability, namely gradually expands along with temperature reduction, and has the lowest critical shrinkage deformation temperature, so that the soaking plate has the characteristics of intelligent response and self-adaption.

Finally, the above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, and although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, which should be covered by the claims of the present invention.