CN115774353A - Integrated liquid-cooled heat dissipation module, backlight module using same and display device - Google Patents
Integrated liquid-cooled heat dissipation module, backlight module using same and display device Download PDFInfo
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- CN115774353A CN115774353A CN202111038598.XA CN202111038598A CN115774353A CN 115774353 A CN115774353 A CN 115774353A CN 202111038598 A CN202111038598 A CN 202111038598A CN 115774353 A CN115774353 A CN 115774353A
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Abstract
The invention relates to an integrated liquid-cooled heat radiation module and a backlight module and a display device using the same, wherein the liquid-cooled heat radiation module comprises: the liquid storage part, a first liquid pump, a heat exchange channel, a first low-temperature liquid pipeline and a first high-temperature liquid pipeline; when the liquid storage device is used, the heat exchange channel is arranged at a heat source, partial cooling liquid in the liquid storage part flows into the heat exchange channel through the first liquid pump and the first low-temperature liquid pipeline, and exchanges heat with the heat source in the heat exchange channel and flows back to the liquid storage part through the first high-temperature liquid pipeline. The liquid-cooled heat dissipation module of the invention separately arranges the heat absorption end and the heat dissipation end at different positions of a module, the temperature of the cooling liquid in the heat exchange channel is increased after the heat is absorbed at the heat source, and the first liquid pump provides power to enable the cooling liquid to flow back to the liquid storage part again to be mixed with the low-temperature cooling liquid in the liquid storage part to reduce the temperature of the cooling liquid.
Description
Technical Field
The present disclosure relates to a heat dissipation module, a backlight module and a display device, and more particularly, to an integrated liquid-cooled heat dissipation module, a backlight module using the same and a display device using the same.
Background
The backlight source of an LCD panel is generally an LED light bar (also called lightbar) mounted at the edge of the panel, and the light bar is formed by arranging and soldering a long string of LED dies on a long circuit board. The LED can emit light and generate heat, and the conventional technology is to attach an LED light bar to a back plate made of metal material in a backlight module, so that heat generated by the LED is conducted and diffused towards the central direction of a screen through the metal back plate and is taken away through natural convection or forced convection of a fan, and the temperature of an LED crystal grain is controlled not to exceed the working range of the LED crystal grain, so that the LED crystal grain is prevented from being subjected to the conditions of luminous efficiency attenuation, color cast, short service life, even direct burning and the like. However, in commercial, medical, outdoor, and ultra-high resolution displays, due to the need for a backlight with higher intensity to meet the display performance, i.e. the LED light bar needs to have higher energy density, which means higher heat generation, it is more and more difficult to achieve the heat dissipation requirement of high power LEDs by conducting through a metal back plate and then conducting by natural convection or fan convection.
Disclosure of Invention
In order to solve the above problems, the present invention provides an integrated liquid-cooled heat dissipation module, and a backlight module and a display device using the same.
According to an aspect of the present invention, the present invention provides an integrated liquid-cooled heat dissipation module, including:
a liquid storage part, wherein cooling liquid is stored in the liquid storage part;
the first liquid pump is provided with a first liquid inlet and a first liquid outlet, and the first liquid inlet of the first liquid pump is communicated with the cooling liquid in the liquid storage part;
the heat exchange channel is a sealed hollow channel;
the two ends of the first low-temperature liquid pipeline are respectively communicated with the first liquid outlet of the first liquid pump and the heat exchange channel; and
the two ends of the first high-temperature liquid pipeline are respectively communicated with the heat exchange channel and the liquid storage part;
when the liquid storage device is used, the heat exchange channel is arranged at a heat source, part of cooling liquid in the liquid storage part flows into the heat exchange channel through the first liquid pump and the first low-temperature liquid pipeline, and the part of cooling liquid exchanges heat with the heat source in the heat exchange channel and flows back to the liquid storage part through the first high-temperature liquid pipeline.
As an optional technical solution, the heat exchange channel is integrally long, the heat exchange channel has a first end, the first end has a first opening, a first through hole is disposed in the middle of the heat exchange channel, the first low-temperature liquid pipe is communicated with the heat exchange channel through the first through hole, and the first high-temperature liquid pipe is communicated with the heat exchange channel through the first opening.
As an optional technical solution, the heat exchange channel further has a second end opposite to the first end, the second end has a second opening, a second through hole is further disposed in the middle of the heat exchange channel, and the liquid-cooled heat dissipation module further includes:
the second liquid pump is provided with a second liquid inlet and a second liquid outlet, and the second liquid inlet of the second liquid pump is communicated with the cooling liquid in the liquid storage part; and
the two ends of the second low-temperature liquid pipeline are respectively communicated with the second liquid outlet of the second liquid pump and the heat exchange channel, and the second low-temperature liquid pipeline is communicated with the heat exchange channel through the second through hole; and
the two ends of the second high-temperature liquid pipeline are respectively communicated with the heat exchange channel and the liquid storage part, and the second high-temperature liquid pipeline is communicated with the heat exchange channel through the second opening;
when the liquid storage device is used, part of cooling liquid in the liquid storage part flows into the heat exchange channel through the second liquid pump and the second low-temperature liquid pipeline, exchanges heat with a heat source in the heat exchange channel, and flows back to the liquid storage part through the second high-temperature liquid pipeline.
As an optional technical solution, the liquid storage part is integrally rectangular, the first liquid pump is arranged in the middle of the liquid storage part to correspond to the first through hole of the heat exchange channel, and the second liquid pump is arranged in the middle of the liquid storage part to correspond to the second through hole of the heat exchange channel.
As an optional technical solution, the liquid-cooled heat dissipation module further includes a connection portion, and the heat exchange channel and the liquid storage portion are connected into a whole by the connection portion.
As an optional technical scheme, the liquid storage part is provided with heat dissipation fins.
As an optional technical scheme, the heat exchange channel, the connecting part, the liquid storage part and the heat dissipation fins are formed by an aluminum extruded section, and the first low-temperature liquid pipeline and the first high-temperature liquid pipeline are hard pipes.
As an optional technical scheme, the heat source is in a strip shape, and the heat source is arranged close to the heat exchange channel and has the same extending direction with the heat exchange channel.
According to another aspect of the present invention, the present invention further provides a backlight module, which includes a back plate, an LED light bar disposed on the back plate, and the above-mentioned liquid-cooled heat dissipation module, wherein the liquid-cooled heat dissipation module is fixed on the back surface of the back plate, the heat exchange channel is adjacent to the LED light bar, the LED light bar serves as a heat source, and the liquid-cooled heat dissipation module is used for dissipating heat of the LED light bar.
According to another aspect of the present invention, a display device is further provided, where the display device includes a display module and the backlight module described above, the LED light bar in the backlight module is disposed at a lateral edge of the display module, the liquid-cooled heat dissipation module is disposed behind the backlight module, and the heat exchange channel of the liquid-cooled heat dissipation module is disposed at a lateral edge of the display module corresponding to the LED light bar to dissipate heat of the LED light bar.
In summary, the liquid-cooled heat dissipation module of the present invention separates the heat absorption end (heat exchange channel) and the heat dissipation end (liquid storage portion), the temperature of the cooling liquid in the heat exchange channel increases after absorbing heat at the heat source, and then the cooling liquid flows back to the liquid storage portion again by the power provided by the first liquid pump, and the cooling liquid in the liquid storage portion continuously dissipates into the air through the wall surface of the liquid storage portion, the heat dissipation fins on the liquid storage portion, and the heat dissipation fan, so as to achieve the purpose of heat dissipation.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
Fig. 1 to fig. 3 are schematic views of a liquid-cooled heat dissipation module according to the present invention at different viewing angles;
FIG. 4 is a schematic diagram of a liquid-cooled heat dissipation module of the present invention combined with a backlight module of a display device;
FIG. 5 is a partial cross-sectional view taken along line AA in FIG. 4;
fig. 6 is an enlarged view at B in fig. 5.
Detailed Description
Fig. 1 to fig. 3 are schematic views of a liquid-cooled heat dissipation module according to the present invention at different viewing angles; FIG. 4 is a schematic view of the liquid-cooled heat dissipation module and the backlight module according to the present invention; fig. 5 is a partial sectional view taken along line AA in fig. 4, and fig. 6 is an enlarged view at B in fig. 5.
Referring to fig. 1 to 6, the present invention provides a liquid-cooled heat dissipation module 1, wherein the liquid-cooled heat dissipation module 1 can be used for dissipating heat of an LED light bar 902 of a backlight module 90 in a display device 2, in this embodiment, a heat source (e.g., the LED light bar 902) is in a bar shape, and the bar-shaped heat source and a heat exchange channel 20 in the liquid-cooled heat dissipation module 1 extend in the same direction, and in order to perform good heat dissipation on the heat source, the heat source is disposed adjacent to the heat exchange channel 20 in the liquid-cooled heat dissipation module 1. Specifically, the liquid-cooled heat dissipation module 1 of the present invention includes a liquid storage portion 10, a first liquid pump 30, a heat exchange channel 20, a first low temperature liquid pipeline 40, and a first high temperature liquid pipeline 50, and the heat exchange channel 20 is a sealed hollow channel, and when the liquid-cooled heat dissipation module 1 of the present invention is in use, the heat exchange channel 20 is installed at a heat source (for example, a position close to the LED light bar 902). Wherein, the liquid storage portion 10 (the liquid storage portion 10 may be a larger water tank, for example) stores therein a cooling liquid (preferably, the cooling liquid may be water) for heat dissipation; the first liquid pump 30 has a first liquid inlet (not shown) and a first liquid outlet (not shown), the first liquid inlet of the first liquid pump 30 is communicated with the cooling liquid in the liquid storage portion 10, and the first liquid outlet of the first liquid pump 30 is communicated with one end of the first low-temperature liquid pipeline 40, so that when the first liquid pump 30 operates, part of the cooling liquid in the liquid storage portion 10 can be filled into the first low-temperature liquid pipeline 40, and meanwhile, the other end of the first low-temperature liquid pipeline 40 is communicated with the heat exchange channel 20, so that the low-temperature cooling liquid in the first low-temperature liquid pipeline 40 can flow into the heat exchange channel 20 to exchange heat with the heat source; furthermore, one end of the first high-temperature liquid pipeline 50 is communicated with the heat exchanging channel 20, and the other end of the first high-temperature liquid pipeline 50 is communicated with the liquid storage portion 10, so that the cooling liquid in the heat exchanging channel 20 flows back to the liquid storage portion 10 through the first high-temperature liquid pipeline 50 after exchanging heat with the heat source (it should be noted that the temperature of the low-temperature cooling liquid in the first low-temperature liquid pipeline 40 will be increased after passing through the heat exchanging channel 20, and therefore the temperature of the cooling liquid in the first high-temperature liquid pipeline 50 is higher than that of the cooling liquid in the first low-temperature liquid pipeline 40).
As can be seen from the above, the liquid storage portion 10, the first liquid pump 30, the heat exchange channel 20, the first low temperature liquid pipeline 40, and the first high temperature liquid pipeline 50 in the present invention together form a first circulation heat dissipation pipeline, by means of the circulation heat dissipation pipeline, heat at the heat source (in this embodiment, the heat source is the LED light bar 902 of the backlight module 90 in the display device 2) is taken away by the cooling liquid in the heat exchange channel 20, and the heated cooling liquid returns to the larger liquid storage portion 10 through the first high temperature liquid pipeline 50 to cool down, so as to achieve the purpose of heat dissipation.
In addition, in the present embodiment, the cross section of the heat exchange channel 20 is triangular, but not limited thereto, and in other embodiments, the cross section of the heat exchange channel may also be square or rectangular.
In this embodiment, the liquid-cooled heat dissipation module 1 further includes a connection portion 100, the heat exchange channel 20 and the liquid storage portion 10 are connected to form a whole by the connection portion 100, and the heat exchange channel 20 and the liquid storage portion 10 are respectively disposed at two opposite ends of the connection portion 100. Preferably, the heat exchange channel 20, the connecting portion 100 and the liquid storage portion 10 of the present invention are integrally formed by an aluminum extruded material, and two ends of the heat exchange channel 20 are originally aluminum extruded sections, and the sections are hollow holes, and then are partially processed and sealed to form a liquid inlet and a liquid outlet of the first high temperature liquid pipeline 50, the first low temperature liquid pipeline 40 and the first high temperature liquid pipeline 50 are hard pipes, for example, the first low temperature liquid pipeline 40 and the first high temperature liquid pipeline 50 are made of copper or stainless steel.
It should be noted that, in the conventional liquid cooling heat dissipation technology applied to other products other than the display, since the heat exchange module, the heat dissipation module and the liquid storage module are usually installed as separate components, the liquid pipelines connected to each other need to use plastic hoses. The plastic hose is easy to leak or block when the connecting pipe is assembled in a bent mode, and the plastic hose is easy to have the risk of material aging and cracking after long-term operation in a high-temperature environment.
In contrast, the heat exchange channel 20, the connection portion 100 and the liquid storage portion 10 of the present invention are formed by trimming a long plate-shaped aluminum extruded part through machining to cut off a portion of aluminum material, and all the parts are fixed on the main structure without mutual movement, so that the first low temperature liquid pipeline 40, the first high temperature liquid pipeline 50 and the following connected liquid pipelines such as the second low temperature liquid pipeline 70 and the second high temperature liquid pipeline 80 can be manufactured by using a reliable hard pipe, such as a copper pipe or a stainless steel pipe, and the connection points of the heat exchange channel 20 and the liquid storage portion 10 can be directly connected by a reliable welding process or EPOXY engineering glue by a manufacturer of the heat dissipation module 1, thereby achieving the purposes of simplifying the number of parts, improving the reliability, reducing the manufacturing cost, etc., and the whole module is integrally constructed, so that the assembly and the replacement and maintenance processes are simpler. The heat dissipation module is particularly suitable for a special-purpose liquid crystal display taking a high-power LED lamp bar as a backlight source. The integrated liquid-cooled heat dissipation module 1 can avoid the main defects of the existing liquid-cooled heat dissipation technology applied to other products not used for a display, namely the problems of lower reliability, higher cost, difficult assembly, maintenance and replacement and the like caused by complicated parts, and the reliability of the liquid-cooled heat dissipation module 1 is close to that of the traditional vacuum heat pipe heat dissipation module.
In order to further enhance the heat dissipation effect, the liquid storage portion 10 is further provided with heat dissipation fins 101 and a heat dissipation fan 102. In this embodiment, preferably, the direction of the heat dissipation fins 101 may be the same as the extending direction of the liquid storage portion 10, so that the heat dissipation fins and the heat exchange channels 20 may be formed together with the liquid storage portion 10 in the same aluminum extruded part, and may be adhered to the surface of the liquid storage portion 10 without additional manufacturing, thereby achieving the effects of simplifying the number of parts and reducing the thermal resistance between the heat dissipation fins 101 and the liquid storage portion 10. In addition, two heat dissipation fans 102 may be disposed on the liquid storage portion 10, but the number of the heat dissipation fans 102 is not limited thereto, and the number of the fans may be increased or decreased according to actual needs. Meanwhile, the other idle positions of the liquid storage portion 10 (the idle positions refer to positions on the liquid storage portion 10 where other components are not disposed) may be covered with the heat dissipation fins 101, and certainly, the heat dissipation fins 101 may be disposed only at several positions of the liquid storage portion 10 (instead of the entire idle positions), which may be adjusted according to actual requirements.
In addition, in the present embodiment, since the heat source is the LED light bar 902, the LED light bar 902 is usually hottest in the center and cold at both ends. Therefore, corresponding to the application scenario, the heat exchange channel 20 of the present invention is overall in a strip shape, and the length thereof corresponds to the length of the LED light bar 902. Meanwhile, the heat exchanging channel 20 has a first end portion 201 and a second end portion 202 opposite to each other, the first end portion 201 has a first opening (not shown), the second end portion 202 has a second opening (not shown), a first through hole (not shown) and a second through hole (not shown) are disposed in the middle of the heat exchanging channel 20 at positions corresponding to the center of the LED light bar 902, the first low temperature liquid pipeline 40 is communicated with the heat exchanging channel 20 through the first through hole, and the first high temperature liquid pipeline 50 is communicated with the heat exchanging channel 20 through the first opening. Preferably, the liquid-cooled heat dissipation module 1 of the present invention further includes a second liquid pump 60, a second low-temperature liquid pipeline 70 and a second high-temperature liquid pipeline 80 (in this embodiment, the second low-temperature liquid pipeline 70 and the second high-temperature liquid pipeline 80 are both made of copper, that is, the second low-temperature liquid pipeline 70 and the second high-temperature liquid pipeline 80 are both made of copper pipes), the second liquid pump 60 has a second liquid inlet (not shown) and a second liquid outlet (not shown), the second liquid inlet of the second liquid pump 60 is communicated with the cooling liquid in the liquid storage portion 10, and the second liquid outlet of the second liquid pump 60 is communicated with one end of the second low-temperature liquid pipeline 70, so that when the second liquid pump 60 operates, a part of the cooling liquid in the liquid storage portion 10 can be pumped into the second low-temperature liquid pipeline 70, and meanwhile, the other end of the second low-temperature liquid pipeline 70 is communicated with the heat exchange channel 20 through a second through hole, so that the cooling liquid in the second low-temperature liquid pipeline 70 can flow into the heat exchange channel 20 to exchange heat with a heat source; furthermore, one end of the second high temperature liquid pipeline 80 is communicated with the heat exchange channel 20 through the second opening, and the other end of the second high temperature liquid pipeline 80 is communicated with the liquid storage part 10, so that a part of the cooling liquid in the heat exchange channel 20 flows back to the liquid storage part 10 through the second high temperature liquid pipeline 80 after heat exchange. Thus, the liquid storage portion 10, the first liquid pump 30, the heat exchange channel 20, the first low-temperature liquid pipeline 40 and the first high-temperature liquid pipeline 50 jointly form a first circulating heat dissipation pipeline, the liquid storage portion 10, the second liquid pump 60, the heat exchange channel 20, the second low-temperature liquid pipeline 70 and the second high-temperature liquid pipeline 80 jointly form a second circulating heat dissipation pipeline, and in the first circulating heat dissipation pipeline and the second circulating heat dissipation pipeline, the low-temperature liquid directly reaches the hottest position in the center of the LED light bar 902 through the first low-temperature liquid pipeline 40 (the first low-temperature liquid pipeline 40 is communicated with the first through hole in the middle of the heat exchange channel 20) and the second low-temperature liquid pipeline 70 (the second low-temperature liquid pipeline 70 is communicated with the second through hole in the middle of the heat exchange channel 20), so that the low-temperature liquid can quickly reduce the temperature of the hottest position in the center of the LED light bar 902, and the heat dissipation effect is better.
In addition, in this embodiment, a partition plate may be disposed or not disposed between the first through hole and the second through hole of the heat exchange channel 20 according to actual requirements, if the partition plate is disposed, the heat exchange channel 20 is divided into two parts which are independently sealed, so that the cooling liquid entering from the first low temperature liquid pipeline 40 can only flow to the first end portion 201, and the cooling liquid entering into the second low temperature liquid pipeline 70 can only flow to the second end portion 202, that is, by respectively controlling the output amounts of the first liquid pump 30 and the second liquid pump 60, the heat dissipation capacities of the first circulation heat dissipation pipeline and the second circulation heat dissipation pipeline can be respectively controlled, for example, if a certain side of the display is hot due to some external reasons, the heat dissipation intensity of the side can be separately increased. If no partition is provided, the heat exchange channel 20 is a communication channel (i.e., the first end 201 and the second end 202 of the heat exchange channel 20 are communicated with each other), and then the two sets of liquid pumps can be used as backup for each other, that is, if one of the liquid pumps (e.g., the first liquid pump) fails to generate sound, the cooling liquid filled by the other liquid pump (e.g., the second liquid pump) can still provide a limited circulation effect for the whole heat exchange channel 20, so that a complete heat dissipation failure of one side of the heat exchange channel 20 cannot occur.
In addition, in the embodiment, the entire liquid storage portion 10 is rectangular, the first liquid pump 30 is disposed at the middle of the liquid storage portion 10 to correspond to the first through hole of the heat exchange channel 20, and the second liquid pump 60 is disposed at the middle of the liquid storage portion 10 to correspond to the second through hole of the heat exchange channel 20.
In order to facilitate the fixing and combination of the liquid-cooled heat dissipation module 1 of the present invention and the heat source, the liquid-cooled heat dissipation module 1 of the present invention further has an attaching part (not shown in the drawings), by which the liquid-cooled heat dissipation module 1 of the present invention can be directly installed behind the backlight module 90 (meanwhile, the heat exchange channel 20 is close to the LED light bar 902 of the backlight module 90). And the locking part can also be integrally formed by utilizing aluminum profiles, the heat exchange channel 20, the liquid storage part 10 and other parts. And a heat conducting pad or a heat conducting paste can be filled between the outer wall of the heat exchanging channel 20 and the contact surface at the rear of the backlight module 90 to enhance the heat conducting capability.
According to another aspect of the present invention, the present invention further provides a backlight module 90, which includes a back plate 901 and LED light bars 902, the LED light bars 902 are disposed on the back plate 901, the backlight module 90 further includes the above-mentioned integrated liquid-cooled heat dissipation module 1, and the integrated liquid-cooled heat dissipation module 1 is fixed on the back surface of the back plate 901, and the heat exchange channels 20 are adjacent to the LED light bars 902 (specifically, the heat exchange channels 20 may be parallel to and adjacent to the length direction of the LED light bars 902), the LED light bars 902 serve as a heat source, and the liquid-cooled heat dissipation module 1 is used for dissipating heat of the LED light bars 902.
According to another aspect of the present invention, the present invention further provides a display device 2, which includes the display module 200 and the backlight module 90 as described above, the LED light bars 902 of the backlight module 90 are disposed at the lateral edge of the display module 200, the liquid-cooled heat dissipation module 1 as described above is disposed behind the backlight module 90, and the heat exchange channels 20 of the liquid-cooled heat dissipation module 1 are disposed in parallel at the lateral edge of the display module 200 corresponding to the LED light bars 902 to dissipate heat of the LED light bars 902.
In summary, the liquid-cooled heat dissipation module of the present invention uses a long plate-shaped aluminum extruded part as a main body, and the cross section of the long plate-shaped main body has a plurality of holes, and the holes of part of the cross section are processed and sealed to be used as a heat exchange channel for the cooling liquid, and the holes of part of the cross section are processed and sealed to be used as a liquid storage part, a liquid pump and a plurality of communicated liquid pipelines are arranged to make the cooling liquid circulate between the heat exchange channel and the liquid storage part, the heat exchange channel is arranged near the LED light bar which needs to dissipate heat and cool, the heat generated by the LED is absorbed through heat conduction, and part of the outer wall of the liquid storage part can be directly manufactured into heat dissipation fins by aluminum extrusion, and is blown to the heat dissipation fins by a heat dissipation fan to cool. The whole system avoids the main defects of the conventional liquid cooling system, namely, the complex parts, lower reliability, higher cost and difficult assembly, maintenance and replacement. The main structure is formed by only trimming a long plate-shaped aluminum extrusion piece by cutting off partial aluminum materials through machining, and all parts are fixed on the main structure, so that the aims of simplifying the number of parts, improving the reliability and reducing the manufacturing cost are fulfilled, and the whole module is of an integrated structure, so that the assembly, replacement and maintenance procedures are simpler. The heat dissipation module is particularly suitable for being applied to a special-purpose liquid crystal display taking a high-power LED lamp bar as a backlight light source.
The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a liquid-cooled heat dissipation module of integral type which characterized in that includes:
a liquid storage part, wherein cooling liquid is stored in the liquid storage part;
the first liquid pump is provided with a first liquid inlet and a first liquid outlet, and the first liquid inlet of the first liquid pump is communicated with the cooling liquid in the liquid storage part;
the heat exchange channel is a sealed hollow channel;
the two ends of the first low-temperature liquid pipeline are respectively communicated with the first liquid outlet of the first liquid pump and the heat exchange channel; and
the two ends of the first high-temperature liquid pipeline are respectively communicated with the heat exchange channel and the liquid storage part;
when the liquid storage device is used, the heat exchange channel is arranged at a heat source, part of cooling liquid in the liquid storage part flows into the heat exchange channel through the first liquid pump and the first low-temperature liquid pipeline, and the part of cooling liquid exchanges heat with the heat source in the heat exchange channel and flows back to the liquid storage part through the first high-temperature liquid pipeline.
2. The liquid-cooled heat dissipation module according to claim 1, wherein the heat exchange channel is elongated, the heat exchange channel has a first end portion with a first opening, the heat exchange channel has a middle portion with a first through hole, the first low-temperature liquid pipe communicates with the heat exchange channel through the first through hole, and the first high-temperature liquid pipe communicates with the heat exchange channel through the first opening.
3. The liquid-cooled heat dissipation module as claimed in claim 2, wherein the heat exchange channel further has a second end opposite to the first end, the second end has a second opening, the middle of the heat exchange channel is further provided with a second through hole, and the liquid-cooled heat dissipation module further comprises:
the second liquid pump is provided with a second liquid inlet and a second liquid outlet, and the second liquid inlet of the second liquid pump is communicated with the cooling liquid in the liquid storage part; and
the two ends of the second low-temperature liquid pipeline are respectively communicated with the second liquid outlet of the second liquid pump and the heat exchange channel, and the second low-temperature liquid pipeline is communicated with the heat exchange channel through the second through hole; and
the two ends of the second high-temperature liquid pipeline are respectively communicated with the heat exchange channel and the liquid storage part, and the second high-temperature liquid pipeline is communicated with the heat exchange channel through the second opening;
when the liquid storage device is used, part of cooling liquid in the liquid storage part flows into the heat exchange channel through the second liquid pump and the second low-temperature liquid pipeline, exchanges heat with a heat source in the heat exchange channel, and flows back to the liquid storage part through the second high-temperature liquid pipeline.
4. The liquid-cooled heat dissipation module as claimed in claim 3, wherein the liquid reservoir is a rectangular parallelepiped, the first liquid pump is disposed at a middle position of the liquid reservoir to correspond to the first through hole of the heat exchange channel, and the second liquid pump is disposed at a middle position of the liquid reservoir to correspond to the second through hole of the heat exchange channel.
5. The liquid-cooled heat sink module as claimed in claim 1, further comprising a connecting portion, wherein the heat exchange channel and the liquid storage portion are integrally connected by the connecting portion.
6. The liquid-cooled heat sink module as claimed in claim 5, wherein the liquid reservoir has heat fins.
7. The liquid-cooled heat dissipation module according to claim 6, wherein the heat exchange channel, the connection portion, the reservoir portion and the heat dissipation fins are formed by an aluminum extrusion, and the first low temperature liquid pipeline and the first high temperature liquid pipeline are rigid pipes.
8. The liquid-cooled heat dissipation module as claimed in claim 1, wherein the heat source is in the form of a strip, and the heat source is disposed adjacent to the heat exchange channel and extends in the same direction as the heat exchange channel.
9. A backlight module comprises a back plate and an LED light bar, wherein the LED light bar is arranged on the back plate, the backlight module is characterized by further comprising the liquid-cooled heat dissipation module as claimed in any one of claims 1 to 8, the liquid-cooled heat dissipation module is fixed on the rear surface of the back plate, the heat exchange channel is close to the LED light bar, the LED light bar serves as a heat source, and the liquid-cooled heat dissipation module is used for dissipating heat of the LED light bar.
10. A display device, comprising a display module and the backlight module of claim 9, wherein the LED light bar in the backlight module is disposed at a side edge of the display module, the liquid-cooled heat dissipation module is disposed behind the backlight module, and the heat exchange channel of the liquid-cooled heat dissipation module is disposed at a side edge of the display module corresponding to the LED light bar for dissipating heat of the LED light bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111038598.XA CN115774353B (en) | 2021-09-06 | Integrated liquid-cooled heat dissipation module, backlight module using same and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111038598.XA CN115774353B (en) | 2021-09-06 | Integrated liquid-cooled heat dissipation module, backlight module using same and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115774353A true CN115774353A (en) | 2023-03-10 |
| CN115774353B CN115774353B (en) | 2024-04-19 |
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Citations (17)
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