A temperature control type multi-cavity self-adaptive liquid cooling heat dissipation module for a smart terminal

Abstract

The present application relates to liquid cooling heat dissipation technical field, especially to a temperature control type multi-cavity self-adaptive liquid cooling heat dissipation module for intelligent terminal, comprising a heat dissipation shell, a flow pump and a cooling liquid tank; the heat dissipation shell is provided with concave cavities distributed along its length direction in turn, and water cooling units are arranged in the concave cavities; the water cooling unit comprises a cooling plate and a switching mechanism, the cooling plate is provided with liquid cooling channels, the liquid cooling channels comprise an inlet end, a first flow channel, a second flow channel and an outlet end; the length of the first flow channel is less than that of the second flow channel; the liquid cooling channels are connected in series; when the temperature of the cooling plate does not reach a temperature threshold, the switching mechanism makes the cooling liquid flow through the water cooling unit along the path of the inlet end, the first flow channel and the outlet end; when the temperature threshold is reached, the switching mechanism makes the cooling liquid flow through the corresponding water cooling unit along the path of the inlet end, the second flow channel and the outlet end; the present application improves the local heat dissipation capacity to quickly eliminate local hot spots and improve the overall heat dissipation efficiency.

Description

Technical Field

[0001] This invention relates to the field of liquid cooling technology, and in particular to a temperature-controlled multi-cavity adaptive liquid cooling module for smart terminals. Background Technology

[0002] With the rapid development of 5G communication, artificial intelligence and high-performance computing technologies, the computing power of processors in smart terminals such as smartphones and tablets has been greatly improved. Their power consumption and heat generation have also increased accordingly. Heat dissipation performance has become a key factor restricting the continuous release of smart terminal performance, operational stability and service life.

[0003] Currently, most liquid cooling modules commonly used in smart terminals adopt a fixed circulating flow channel structure. The coolant dissipates heat from all heat dissipation areas simultaneously through a unified flow channel. This cannot match the different heat dissipation characteristics of different components such as CPU, GPU, battery, and charging module inside the smart terminal. This easily leads to insufficient heat dissipation in the core high-heat area, forming local hot spots, while low-heat area is overheated, which seriously reduces the overall heat dissipation efficiency. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a temperature-controlled multi-cavity adaptive liquid cooling heat dissipation module for smart terminals.

[0005] To achieve the above objectives, the specific solution of the present invention is as follows: A temperature-controlled multi-cavity adaptive liquid cooling heat dissipation module for smart terminals includes a heat dissipation housing and a flow pump and a coolant tank disposed on the heat dissipation housing; the side of the heat dissipation housing facing the smart terminal has a plurality of recesses arranged sequentially along its length, and each recess is provided with a water cooling unit. Each water-cooling unit includes a cooling plate and a switching mechanism located on the cooling plate. The cooling plate has a liquid cooling channel, which includes an inlet end, a first flow channel, a second flow channel, and an outlet end. The two ends of the first flow channel and the second flow channel are connected to the inlet end and the outlet end, respectively. The length of the first flow channel is less than the length of the second flow channel. The liquid cooling channels of each water-cooling unit are connected in series along the direction of the heat dissipation shell so that the flow pump draws the coolant in the coolant tank through each water-cooling unit and then returns it to the coolant tank. The switching mechanism is configured to: when the temperature of the cooling plate has not reached the temperature threshold, allow the coolant to flow through the water-cooling unit along the path of the inlet end, the first flow channel, and the outlet end; when the temperature threshold is reached, allow the coolant to flow through the corresponding water-cooling unit along the path of the inlet end, the second flow channel, and the outlet end.

[0006] Furthermore, the switching mechanism includes a three-way switching valve and a drive assembly. The three-way switching valve is rotatably positioned at the inlet end, the junction of the first flow channel and the second flow channel. When the temperature of the cooling plate has not reached the temperature threshold, the drive assembly causes the three-way switching valve to connect the inlet end with the first flow channel and simultaneously close the second flow channel. When the temperature of the cooling plate reaches the temperature threshold, the three-way switching valve causes the three-way switching valve to connect the inlet end with the second flow channel and simultaneously close the first flow channel.

[0007] Furthermore, the drive assembly includes a first push rod slidably disposed on the cooling plate, and a horizontal drive group and a vertical drive group disposed on the cooling plate. The side of the first push rod facing the three-way switching valve has a vertically oriented slot. The horizontal drive group is used to drive the first push rod to slide horizontally, and the vertical drive group is used to drive the first push rod to slide vertically. The side of the three-way switching valve facing the first push rod has a first circular boss protruding from it. The first circular boss is movably embedded in the slot.

[0008] Furthermore, the lateral drive assembly includes a first lateral thermal expansion body, a lateral slider, and a first lateral spring; the fixed end of the first lateral thermal expansion body is connected to a cooling plate; the lateral slider is slidably disposed on the cooling plate; the first lateral spring is disposed between the first lateral thermal expansion body and the lateral slider; one end of the first lateral spring is connected to the movable end of the first lateral thermal expansion body, and the other end is connected to one end of the lateral slider; the other end of the lateral slider is slidably engaged with a first push rod.

[0009] Furthermore, the vertical drive assembly includes a vertical thermal expansion body, a vertical slider, and a vertical spring; the fixed end of the vertical thermal expansion body is connected to a cooling plate; the vertical slider is slidably disposed on the cooling plate along the vertical direction; the vertical spring is disposed between the vertical thermal expansion body and the vertical slider; one end of the vertical spring is connected to the movable end of the vertical thermal expansion body, and the other end is connected to one end of the vertical slider; the other end of the vertical slider is slidably engaged with the first push rod.

[0010] Furthermore, the first circular boss is elastically floatingly connected with a locking pin along its axial direction, and the strip groove is recessed with a locking groove; when the inlet end is connected to the second flow channel, the locking pin and the locking groove are positioned correspondingly, and the locking pin is movably embedded in the locking groove, thereby unlockably locking the three-way switching valve.

[0011] Furthermore, a sliding cavity is provided along the length of the end of the first push rod away from the transverse drive assembly. The sliding cavity is provided with a second transverse thermal expansion body, a second push rod, and a second transverse spring. The fixed end of the second transverse thermal expansion body is fixed to the inner wall of the sliding cavity. One end of the second push rod is slidably disposed in the sliding cavity, and the other end protrudes out of the sliding cavity and is provided with a limiting slide. The two ends of the second transverse spring are respectively connected to the movable end of the second transverse thermal expansion body and one end of the second push rod. The cooling plate is recessed with an L-shaped groove, and the limiting slide is movably embedded in the L-shaped groove; the cooling plate is also provided with an unlocking component; when the inlet end is connected to the second flow channel, the axis of the first round boss and the center line of the cross arm section of the L-shaped groove are on the same horizontal line, and the unlocking component is configured to: under the drive of the second push rod, cause the axis of the first round boss to separate from the center line of the cross arm section of the L-shaped groove and be on the same horizontal line.

[0012] Furthermore, a notch is provided on the side of the sliding cavity facing the cooling plate; a sliding groove is recessed on the side of the cooling plate facing the smart terminal corresponding to the horizontal arm section of the L-shaped groove, and a wedge-shaped groove is recessed at the bottom of the sliding groove near the three-way switching valve. The unlocking assembly includes a third push rod, a first locking block, a second locking block, a first reset spring, and a second reset spring. The third push rod is slidably mounted on a cooling plate. The end of the third push rod near the three-way switching valve is an inclined end, and the end of the third push rod away from the three-way switching valve is slidably mounted in a sliding groove and has a through-hole. The first locking block and the second locking block are slidably mounted at opposite ends of the sliding hole. The first locking block has inclined surfaces on both sides at the end away from the second locking block. The first reset spring is located in the sliding hole, and its two ends are respectively connected to the first locking block and the second locking block. The two ends of the second reset spring are respectively connected to the groove wall near the wedge-shaped groove of the sliding groove and the end of the third push rod away from the three-way switching valve. When the second locking block protrudes into the wedge-shaped groove, the first locking block is received in the sliding hole; when the second locking block is received in the sliding hole, the first locking block can protrude out of the sliding hole and protrude into the sliding cavity through the notch under the elastic force of the first return spring.

[0013] Furthermore, the heat dissipation housing is provided with heat dissipation blades rotatably along its length, corresponding to the position of each cavity; The heat dissipation blades can rotate when the temperature of the cooling plate reaches the temperature threshold.

[0014] Furthermore, the heat dissipation housing is provided with a conductive sheet corresponding to the position of each heat dissipation blade. One end of the conductive sheet is electrically connected to the corresponding heat dissipation blade, and the other end is electrically connected to the pressure sensor. The cooling plate is provided with an arc hole corresponding to the position of each pressure sensor. The three-way switching valve has a second circular boss protruding on the side facing away from the smart terminal; the second circular boss is movably embedded in the arc hole; When the three-way switching valve drives the second round boss to rotate to the position corresponding to the pressure sensor, the second round boss squeezes the pressure sensor, causing the pressure sensor to generate a feedback signal, so as to connect the power circuit of the heat dissipation blade according to the feedback signal.

[0015] The beneficial effects of this invention are as follows: By setting multiple concave cavities distributed sequentially along the length direction on one side of the heat dissipation shell and configuring independent water-cooling units accordingly, this invention achieves matching with the heat dissipation needs of different heat-generating areas of the smart terminal, enabling targeted zoned heat dissipation for each area; each water-cooling unit is equipped with a first flow channel and a second flow channel of different lengths, and the flow path of the coolant is automatically switched according to the real-time temperature of the cooling plate by a switching mechanism. In the low heat-generating state where the temperature of the cooling plate has not reached the temperature threshold, a short flow channel circulation is adopted, which effectively reduces the flow resistance of the coolant and reduces the operating energy consumption of the flow pump. In the high heat-generating state where the temperature of the cooling plate has reached the temperature threshold, it automatically switches to a long flow channel circulation, which effectively extends the heat exchange time and heat exchange area between the coolant and the cooling plate, greatly improves the local heat dissipation capacity, quickly eliminates local hot spots, and improves the overall heat dissipation efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the liquid cooling heat dissipation module of the present invention in its initial state; Figure 2 This is a cross-sectional schematic diagram of the liquid cooling heat dissipation module of the present invention in its initial state; Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle; Figure 4 This is a three-dimensional structural diagram of one of the water-cooling units in the liquid cooling heat dissipation module of the present invention, after the vertical drive group moves the first push rod in the vertical direction when the temperature reaches the temperature threshold. Figure 5 This is a cross-sectional view of one of the water-cooling units in the liquid cooling heat dissipation module of the present invention, after the vertical drive group moves the first push rod in the vertical direction when the temperature reaches the temperature threshold. Figure 6 yes Figure 5 A magnified view of a portion of point B in the middle; Figure 7 This is a three-dimensional structural diagram of one of the water-cooling units in the liquid cooling heat dissipation module of the present invention, after the first push rod is moved laterally by the lateral drive group when the temperature reaches the temperature threshold. Figure 8 This is a cross-sectional view of one of the water-cooling units in the liquid cooling heat dissipation module of the present invention, after the first push rod is moved laterally by the lateral drive group when the temperature reaches the temperature threshold. Figure 9 yes Figure 8 A magnified view of a portion of point C in the middle; Figure 10 This is a cross-sectional schematic diagram of the water-cooling unit and pressure sensor of the present invention. Figure 11 yes Figure 10 A magnified view of a portion of point D in the middle; Figure 12 This is a three-dimensional structural diagram of the water-cooling unit of the present invention; Figure 13 This is a three-dimensional structural diagram of the first push rod of the present invention; Figure 14 This is a cross-sectional schematic diagram of the transverse drive assembly of the present invention installed behind the cooling plate; Figure 15 This is a cross-sectional schematic diagram of the vertical drive assembly of the present invention installed behind the cooling plate; Figure 16 This is a schematic diagram of the structure of the three-way switching valve of the present invention; Figure 17 This is a schematic diagram of the cooling plate of the present invention; Figure 18 This is a cross-sectional view of the unlocking component of the present invention installed behind the cooling plate; Explanation of reference numerals in the attached drawings: 1. Heat sink housing; 11. Cavity; 2. Flow pump; 3. Coolant tank; 4. Water cooling unit; 41. Cooling plate; 411. Liquid cooling channel; 4111. Inlet end; 4112. First flow channel; 4113. Second flow channel; 4114. Outlet end; 412. L-shaped groove; 413. Slide groove; 414. Wedge groove; 415. Arc hole; 42. Three-way switching valve; 421. First circular boss; 422. Locking pin; 423. Second circular boss; 431. First push rod; 4311. Strip groove; 4312. Locking groove; 4313. Slide cavity; 4314. Notch; 4 32. Lateral drive assembly; 4321. First lateral thermal expansion body; 4322. Lateral slider; 4323. First lateral spring; 433. Vertical drive assembly; 4331. Vertical thermal expansion body; 4332. Vertical slider; 4333. Vertical spring; 434. Second lateral thermal expansion body; 435. Second push rod; 4351. Limiting slide; 436. Second lateral spring; 51. Third push rod; 511. Inclined end; 52. First locking block; 53. Second locking block; 54. First reset spring; 55. Second reset spring; 61. Heat dissipation blade; 62. Conductive sheet; 63. Pressure sensor. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this is not to limit the scope of the invention to this.

[0018] Reference Figures 1 to 18As shown in this embodiment, a temperature-controlled multi-cavity adaptive liquid cooling heat dissipation module for a smart terminal includes a heat dissipation housing 1, a flow pump 2, and a coolant tank 3 disposed on the heat dissipation housing 1; the side of the heat dissipation housing 1 facing the smart terminal has a plurality of recesses 11 arranged sequentially along its length, and each recess 11 is provided with a water cooling unit 4; each recess 11 is used to cooperate with the smart terminal to form an independent heat dissipation cavity, corresponding to different heat-generating areas of the smart terminal, to achieve zoned heat dissipation; Each water-cooled unit 4 includes a cooling plate 41 and a switching mechanism disposed on the cooling plate 41. The cooling plate 41 contains a liquid cooling channel 411, which includes an inlet end 4111, a first flow channel 4112, a second flow channel 4113, and an outlet end 4114. The two ends of the first flow channel 4112 and the second flow channel 4113 are respectively connected to the inlet end 4111 and the outlet end 4114. The length of the first flow channel 4112 is less than the length of the second flow channel 4113, so that when the coolant exchanges heat in the second flow channel 4113... The space is longer and the heat exchange area is larger; the liquid cooling channel 411 of each water cooling unit 4 is connected in series along the direction of the heat dissipation shell 1, the outlet of the flow pump 2 is connected to the inlet end 4111 of the first water cooling unit 4 after series connection, the outlet end 4114 of the last water cooling unit 4 after series connection is connected to the inlet of the coolant tank 3, and the outlet of the coolant tank 3 is connected to the inlet of the flow pump 2, forming a coolant circulation path, so that the flow pump 2 will flow the coolant in the coolant tank 3 through each water cooling unit 4 in sequence and then return to the coolant tank 3; When the temperature of the cooling plate 41 has not reached the temperature threshold, the switching mechanism causes the coolant to flow through the water-cooling unit 4 along the path of the inlet end 4111, the first flow channel 4112, and the outlet end 4114. At this time, the coolant flow rate is fast and the heat exchange time is short, which meets the basic heat dissipation requirements under low heat generation conditions. When the temperature threshold is reached, the switching mechanism causes the coolant to flow through the corresponding water-cooling unit 4 along the path of the inlet end 4111, the second flow channel 4113, and the outlet end 4114. At this time, the heat exchange path of the coolant is extended, the heat exchange efficiency is improved, and the local high heat problem is specifically solved. Moreover, each water-cooling unit 4 switches independently without interfering with each other.

[0019] It is understood that in this embodiment, "horizontal" refers to the length direction parallel to the heat sink housing 1, and "vertical" refers to the width direction parallel to the heat sink housing 1.

[0020] Specifically, in actual use, the temperature-controlled multi-cavity adaptive liquid cooling module of this embodiment has the heat dissipation shell 1 attached to one side of the smart terminal. Initially, the switching mechanism of each water-cooling unit 4 connects its first flow channel 4112 to the inlet end 4111 and disconnects the second flow channel 4113 from the inlet end 4111. When the smart terminal is working normally or at low power consumption, the heat generated by the smart terminal is relatively low, and the temperature of the cooling plate 41 has not reached the temperature threshold. At this time, each cooling plate 41 absorbs the heat dissipated or conducted by the smart terminal, and the flow pump 2 pumps the coolant in the coolant tank 3 to the first water-cooling unit 4. Inside the liquid cooling channel 411, the coolant enters through the inlet end 4111 of the liquid cooling channel 411, then flows along the trajectory of the first flow channel 4112, and then flows out from the outlet end 4114 of the liquid cooling channel 411, and enters the inlet end 4111 of the liquid cooling channel 411 of the next adjacent water cooling unit 4, and then enters the first flow channel 4112 of the next adjacent water cooling unit 4. In this way, it flows through the first flow channel 4112 of each water cooling unit 4, thereby carrying away the heat of the cooling plate 41, realizing heat dissipation for the smart terminal. After absorbing the heat, the coolant flows back to the coolant tank 3 for cooling and cooling down, so as to enter the next cooling cycle.

[0021] As the temperature of the smart terminal rises or it operates at high power consumption, the temperature of the cooling plate 41 increases. When the cooling plate 41 corresponding to a certain heat dissipation cavity reaches the temperature threshold, the switching mechanism of the corresponding water cooling unit 4 connects the second flow channel 4113 with the inlet end 4111 and disconnects the first flow channel 4112 from the inlet end 4111. At this time, the coolant flows through the inlet end 4111 and then through the second flow channel 4113. Since the length of the second flow channel 4113 is greater than the length of the first flow channel 4112, the time for the coolant to flow through the area of ​​the cooling plate 41 is extended, thereby enabling the coolant in the second flow channel 4113 to fully absorb the heat of the cooling plate 41 and perform large-area circulation heat dissipation, improving the heat dissipation efficiency of local hot spots. If the temperature of the cooling plate 41 of the other water cooling units 4 does not reach the temperature threshold, the coolant continues to flow through the first flow channel 4112.

[0022] Understandably, the flow pump 2 can adopt a constant pressure control mode to automatically adjust the output power to match changes in flow channel resistance.

[0023] Reference Figures 1 to 17As shown, in some embodiments of the temperature-controlled multi-cavity adaptive liquid cooling heat dissipation module, the switching mechanism includes a three-way switching valve 42 and a drive assembly. The three-way switching valve 42 is generally cylindrical and is rotatably positioned at the junction of the inlet end 4111, the first flow channel 4112, and the second flow channel 4113. When the temperature of the cooling plate 41 has not reached the temperature threshold, the drive assembly causes the three-way switching valve 42 to connect the inlet end 4111 with the first flow channel 4112, while simultaneously closing the second flow channel 4113, and the coolant circulates only through the short flow channel. When the temperature of the cooling plate 41 reaches the temperature threshold, the drive assembly drives the three-way switching valve 42 to rotate, causing the three-way switching valve 42 to connect the inlet end 4111 with the second flow channel 4113, while simultaneously closing the first flow channel 4112, and the coolant switches to the long flow channel for circulation, realizing automatic switching of the flow channels to meet different heat dissipation needs.

[0024] Reference Figures 1 to 15 As shown, in some embodiments of the temperature-controlled multi-cavity adaptive liquid cooling heat dissipation module, the driving assembly includes a first push rod 431 slidably disposed on the cooling plate 41, and a horizontal driving group 432 and a vertical driving group 433 disposed on the cooling plate 41. The first push rod 431 has a vertically oriented slot 4311 on the side facing the three-way switching valve 42. The horizontal driving group 432 drives the first push rod 431 to slide horizontally, and the vertical driving group 433 drives the first push rod 431 to slide vertically. The three-way switching valve 42 has a protruding first circular boss 421 on the side facing the first push rod 431. The first circular boss 421 is movably embedded in the slot 4311. When the first push rod 431 generates a composite motion under the combined action of the horizontal and vertical driving groups 433, the slot 4311 and the first circular boss 421 cooperate to drive the three-way switching valve 42 to rotate around its own axis, thereby completing the flow channel switching action.

[0025] Reference Figure 12 and Figure 14As shown, in some embodiments of the temperature-controlled multi-cavity adaptive liquid cooling heat dissipation module, the lateral drive group 432 includes a first lateral thermal expansion body 4321, a lateral slider 4322, and a first lateral spring 4323. The fixed end of the first lateral thermal expansion body 4321 is fixedly connected to the cooling plate 41. The lateral slider 4322 is slidably disposed in a preset lateral guide rail on the cooling plate 41. The first lateral spring 4323 is disposed between the first lateral thermal expansion body 4321 and the lateral slider 4322. One end of the first lateral spring 4323 is fixedly connected to the movable end of the first lateral thermal expansion body 4321, and the other end is fixedly connected to one end of the lateral slider 4322. The other end of the lateral slider 4322 is slidably engaged with the first push rod 431. When the temperature of the cooling plate 41 rises, the first lateral thermal expansion body 4321 expands due to heat, pushing the first lateral spring 4323 to compress, thereby pushing the lateral slider 4322 to slide along the lateral guide rail. The lateral slider 4322 drives the first push rod 431 to produce lateral displacement.

[0026] Reference Figure 12 and Figure 15 As shown, in some embodiments of the temperature-controlled multi-cavity adaptive liquid cooling heat dissipation module, the vertical drive group 433 includes a vertical thermal expansion body 4331, a vertical slider 4332, and a vertical spring 4333. The fixed end of the vertical thermal expansion body 4331 is fixedly connected to the cooling plate 41. The vertical slider 4332 is slidably disposed vertically within a preset vertical guide rail on the cooling plate 41. The vertical spring 4333 is disposed between the vertical thermal expansion body 4331 and the vertical slider 4332. One end of the vertical spring 4333 is fixedly connected to the movable end of the vertical thermal expansion body 4331, and the other end is fixedly connected to one end of the vertical slider 4332. The other end of the vertical slider 4332 is slidably engaged with the first push rod 431. When the temperature of the cooling plate 41 rises to the threshold, the vertical thermal expansion body 4331 expands due to heat, pushing the vertical spring 4333 to compress, which in turn pushes the vertical slider 4332 to slide along the vertical guide rail. The vertical slider 4332 drives the first push rod 431 to generate vertical displacement, which, together with the lateral displacement, drives the three-way switching valve 42 to rotate.

[0027] Specifically, both the first lateral thermal expansion body 4321 and the vertical thermal expansion body 4331 are shape memory metals, such as shape memory alloys; the temperature threshold is the phase transition temperature of the shape memory alloy. When the cooling plate 41 corresponding to a certain heat dissipation cavity reaches the temperature threshold, since both the first lateral thermal expansion body 4321 and the vertical thermal expansion body 4331 are connected to the cooling plate 41, both the first lateral thermal expansion body 4321 and the vertical thermal expansion body 4331 reach the phase transition temperature and expand. The first lateral thermal expansion body 4321 pushes the lateral slider 4322 to move in the lateral direction through the first lateral spring 4323, and the vertical thermal expansion body 4331 pushes the vertical slider 4332 to move in the vertical direction through the vertical spring 4333, thereby pushing the first push rod 431 in the vertical and lateral directions. As the first push rod 431 moves, it drives the three-way switching valve 42 to rotate around its axis through the cooperation of the strip groove 4311 and the first round boss 421, thereby cutting off the connection between the first flow channel 4112 and the inlet end 4111 until the three-way switching valve 42 rotates to connect the inlet end 4111 with the second flow channel 4113. At this time, the coolant flows from the inlet end 4111 into the second flow channel 4113 through the three-way switching valve 42, and then flows along the trajectory of the second flow channel 4113 through the interior of the cooling plate 41 to cool the cooling plate 41 and achieve the heat dissipation effect for the smart terminal.

[0028] As the temperature of the smart terminal decreases, the temperature of the cooling plate 41 also decreases accordingly. When the temperature drops below the phase transformation temperature of the shape memory alloy, the first lateral thermal expansion body 4321 and the vertical thermal expansion body 4331 recover their deformation. Thus, the first lateral thermal expansion body 4321 pushes the lateral slider 4322 to move in the opposite direction in the lateral direction through the first lateral spring 4323, and the vertical thermal expansion body 4331 pushes the vertical slider 4332 to move in the opposite direction in the vertical direction through the vertical spring 4333. This can push the first push rod 431 to generate opposite displacement in the vertical and lateral directions, thereby driving the three-way switching valve 42 to rotate to close the second channel and connect the inlet end 4111 with the first flow channel 4112. At this time, the coolant enters the first flow channel 4112 from the inlet end 4111 through the three-way switching valve 42, and flows through the interior of the cooling plate 41 along the trajectory of the first flow channel 4112 to cool and reduce the temperature of the cooling plate 41.

[0029] Reference Figure 12 , Figure 13 and Figure 16As shown, in some embodiments of the temperature-controlled multi-cavity adaptive liquid cooling heat dissipation module, the first circular boss 421 is elastically floatingly connected to a locking pin 422 along its axial direction, and the strip groove 4311 is recessed with a locking groove 4312 that matches the locking pin 422. When the inlet end 4111 is connected to the second flow channel 4113, the positions of the locking pin 422 and the locking groove 4312 correspond exactly. Under the action of its own elastic force, the locking pin 422 is moved into the locking groove 4312, thereby unlockably locking the three-way switching valve 42 and preventing the three-way switching valve 42 from being mis-rotated due to coolant pressure fluctuations or vibrations, thus ensuring the stability of the heat dissipation state of the long flow channel. In this embodiment, the first circular boss 421 has a blind hole along its axial direction, and a compression spring is provided in the blind hole. The locking pin 422 is slidably embedded in the blind hole and abuts against the compression spring to form an elastic floating connection.

[0030] When the first push rod 431 is reset, the locking pin 422 disengages from the locking groove 4312, thereby unlocking the three-way switching valve 42, allowing the three-way switching valve 42 to rotate and reset under the cooperation of the first round boss 421 and the strip groove 4311.

[0031] Reference Figures 2 to 13 , Figure 17 As shown, in some embodiments of the temperature-controlled multi-cavity adaptive liquid cooling heat dissipation module, the end of the first push rod 431 away from the transverse drive group 432 is provided with a sliding cavity 4313 along its length. The sliding cavity 4313 contains a second transverse thermal expansion body 434, a second push rod 435, and a second transverse spring 436. The fixed end of the second transverse thermal expansion body 434 is fixedly connected to the inner wall of the sliding cavity 4313. One end of the second push rod 435 is slidably disposed within the sliding cavity 4313, and the other end extends out of the sliding cavity 4313 and protrudes with a limiting slide 4351. The two ends of the second transverse spring 436 are respectively fixedly connected to the movable end of the second transverse thermal expansion body 434 and one end of the second push rod 435. The cooling plate 41 is recessed with an L-shaped groove, and the limiting slide 4351 is movably embedded in the L-shaped groove. The cooling plate 41 is also provided with an unlocking component. When the inlet end 4111 is connected to the second flow channel 4113, the axis of the first circular boss 421 is aligned with the L-shaped groove. When the centerline of the horizontal arm section of the L-shaped groove is on the same horizontal line, the second transverse thermal expansion body 434 expands due to heat, pushing the second push rod 435 to slide along the slide cavity 4313, causing the limiting slide table 4351 to slide along the horizontal arm section of the L-shaped groove, further restricting the position of the first push rod 431 and enhancing the locking effect of the three-way switching valve 42; when the temperature of the cooling plate 41 drops, under the drive of the second push rod 435, the unlocking component causes the axis of the first round boss 421 to deviate from the same horizontal line as the centerline of the horizontal arm section of the L-shaped groove, thereby releasing the restriction on the first push rod 431 (causing the first round boss 421 to deviate from the dead point position), thereby driving the three-way switching valve 42 to reset.

[0032] For example, the first lateral thermal expansion body 4231, the vertical thermal expansion body 4331, and the second lateral thermal expansion body 434 are all made of nickel-titanium shape memory alloy with the same phase transformation temperature of 50°C, and the temperature threshold corresponds to its phase transformation temperature. Specifically, initially, the limiting slide 4351 is located within the longitudinal arm of the L-shaped groove, the temperature of the second transverse thermal expansion body 434 has not reached its phase change temperature, and the length of one end of the second push rod 435 extending into the sliding cavity 4313 is at its maximum. When the cooling plate 41 corresponding to a certain heat dissipation cavity reaches the temperature threshold, the first transverse thermal expansion body 4321, the vertical thermal expansion body 4331, and the second transverse thermal expansion body 434 reach the phase change temperature and expand. Since the limiting slide 4351 is located within the longitudinal arm of the L-shaped groove at this time, the first push rod 431 cannot move in the transverse direction. The first transverse thermal expansion body 4321 compresses the first transverse spring 4323, and the second transverse thermal expansion body 434 compresses the second transverse spring 436. The vertical thermal expansion body 4331 pushes the vertical slider 4332 to move in the vertical direction through the vertical spring 4333. The limiting slide 4351 moves along the L-shaped groove. The longitudinal arm of the L-shaped groove slides toward the transverse arm of the L-shaped groove 412 until the limiting slide 4351 enters the transverse arm of the L-shaped groove 412. At this time, the first transverse spring 4323 and the second transverse spring 436 release elastic potential energy. The first transverse spring 4323 pushes the transverse slider 4322 to slide in the transverse direction. The transverse slider 4322 pushes the first push rod 431 to move in the transverse direction. At this time, with the cooperation of the first round boss 421 and the strip groove 4311, the three-way switching valve 42 is driven to rotate, so that the inlet end 4111 is connected to the second flow channel 4113, until the locking pin 422 is embedded in the locking groove 4312, locking and limiting the three-way switching valve 42. At this time, the axis of the first round boss 421 is aligned with the L-shaped groove 412. The centerline of the transverse arm section of the L-shaped groove is on the same horizontal line, so that the inlet end 4111 is kept in communication with the second flow channel 4113. At the same time, the second transverse spring 436 pushes the second push rod 435 to slide in the transverse direction, and the limiting slide 4351 slides along the transverse arm section of the L-shaped groove 412. That is, the second push rod 435 gradually extends out of the slide cavity 4313, providing guidance and limiting for the movement of the first push rod 431.

[0033] When the temperature of the cooling plate 41 drops below the phase transformation temperature of the shape memory alloy, the first push rod 431 cannot move in the reverse direction due to the restriction of the first round boss 421 and the strip groove 4311. At this time, the second transverse thermal expansion body 434 recovers its deformation and drives the second push rod 435 to reset through the second transverse spring 436. The second push rod 435 gradually retracts into the slide cavity 4313. When the second push rod 435 contacts the unlocking component, the second push rod 435 drives the unlocking component to work. The unlocking component contacts the outer peripheral wall of the first round boss 421 and pushes the three-way switching valve 42 to rotate through the first round boss 421, thereby causing the axis of the first round boss 421 to deviate from the same horizontal line as the center line of the transverse arm section of the L-shaped groove, that is, the first round boss 421 deviates from the dead point position. At this time, the first push rod 431 first moves in the reverse direction in the transverse direction under the combined action of the first transverse thermal expansion body 4321 and the first transverse spring 4323 until the position of the limiting slide 4351 is aligned with the L-shaped groove. The longitudinal arm section of the L-shaped groove is aligned. At the same time, the first push rod 431 cooperates with the strip groove 4311 through the first round boss 421 to drive the three-way switching valve 42 to rotate, so that the three-way switching valve 42 is reset to connect the inlet end 4111 with the first flow channel 4112. Then, under the combined action of the vertical thermal expansion body 4331 and the vertical spring 4333, the first push rod 431 moves in the opposite direction in the vertical direction. The limiting slide 4351 moves along the longitudinal arm section of the L-shaped groove, so that the first push rod 431 is reset to the initial state.

[0034] Reference Figures 11 to 13 , Figure 17 and Figure 18As shown, in some embodiments of the temperature-controlled multi-cavity adaptive liquid cooling heat dissipation module of this embodiment, the sliding cavity 4313 has a notch 4314 on the side facing the cooling plate 41; the side of the cooling plate 41 facing the smart terminal has a recessed groove 413 corresponding to the horizontal arm section of the L-shaped groove 412, that is, the center line of the groove 413 and the center of the horizontal arm section of the L-shaped groove 412 are on the same horizontal line, and the bottom of the groove 413 near the three-way switching valve 42 has a wedge-shaped groove 414; the unlocking component includes a third push rod 51, a first locking block 52, a second locking block 53, a first reset spring 54 and a second reset spring 55, the third push rod 51 is slidably disposed on the cooling plate 41, the end of the third push rod 51 near the three-way switching valve 42 is an inclined end 511, and the third push rod 51 is away from the three-way switching valve 42. One end of the first locking block 52 is slidably disposed in the sliding groove 413 and has a through-hole; the first locking block 52 and the second locking block 53 are slidably disposed at both ends of the sliding hole; the first locking block 52 has inclined surfaces on both sides at the end away from the second locking block 53; the first return spring 54 is disposed in the sliding hole, and its two ends are fixedly connected to the first locking block 52 and the second locking block 53 respectively; the two ends of the second return spring 55 are fixedly connected to the groove wall of the sliding groove 413 near the wedge groove 414 and the end of the third push rod 51 away from the three-way switching valve 42 respectively; when the second locking block 53 protrudes into the wedge groove 414, the first locking block 52 is received in the sliding hole; when the second locking block 53 is received in the sliding hole, the first locking block 52 can protrude out of the sliding hole and protrude into the sliding cavity 4313 through the notch 4314 under the elastic force of the first return spring 54.

[0035] Specifically, initially, since the centerline of the slide groove 413 and the center of the horizontal arm section of the L-shaped groove 412 are on the same horizontal line, the limiting slide 4351 is located at the end of the longitudinal arm section of the L-shaped groove 412 away from the horizontal arm section. The positions of the first push rod 431 and the third push rod 51 are staggered. Under the elastic force of the second return spring 55, the third push rod 51 moves away from the three-way switching valve 42. The second locking block 53 is received in the slide hole, and the first locking block 52 protrudes out of the slide hole under the elastic force of the first return spring 54. When the vertical drive assembly 433 pushes the first push rod 431 to move vertically, the limiting slide 4351 moves along the longitudinal arm section of the L-shaped groove 412. When the first push rod 431 moves to contact the inclined surface of the first locking block 52, the first push rod 431 squeezes the first locking block 52, causing the first locking block 52 to overcome the elastic force of the first return spring 54 and retract into the sliding hole until the limiting slide 4351 enters the transverse arm section of the L-shaped groove 412. At this time, the first push rod 431 moves in the transverse direction, the limiting slide 4351 moves along the transverse arm section of the L-shaped groove 412, and the second push rod 435 extends outward under the action of the second transverse spring 436. When the notch 4314 on the first push rod 431 moves to correspond to the position of the first locking block 52, the first locking block 52 protrudes out of the sliding hole under the elastic force of the first return spring 54 and extends into the sliding cavity 4313 through the notch 4314. When the temperature of the cooling plate 41 drops below the phase transformation temperature of the shape memory alloy, the second transverse thermal expansion body 434 recovers its deformation and drives the second push rod 435 to reset via the second transverse spring 436. The second push rod 435 gradually retracts into the slide cavity 4313. At this time, because the first locking block 52 protrudes into the slide cavity 4313, the end of the second push rod 435 abuts against the first locking block 52, and pushes the third push rod 51 toward the three-way switching valve 42 through the first locking block 52. The second locking block 53 moves along the trajectory of the slide groove 413. When the inclined end 511 of the third push rod 51 contacts the outer peripheral wall of the first circular boss 421, the third push rod 51 pushes the first circular boss 421 toward the reset direction through the inclined end 511, so that the radial direction of the axis of the first circular boss 421 is... An angle is formed between the sliding direction of the first push rod 431 and the sliding direction of the first push rod 431 (that is, the first round boss 421 is disengaged from the dead point position), thus unlocking the first push rod 431. At this time, the first push rod 431 first moves in the opposite direction in the lateral direction under the combined action of the first lateral thermal expansion body 4321 and the first lateral spring 4323 until the second locking block 53 slides to the position corresponding to the wedge groove 414. The second locking block 53 is embedded in the wedge groove 414 under the action of the first reset spring 54. At the same time, the first locking block 52 automatically retracts into the sliding hole under the action of the first reset spring 54 and its own weight, thereby disengaging from the second push rod 435. At this time, the second push rod 435 can continue to retract inward into the sliding cavity 4313 under the action of the second lateral spring 436 and the second lateral thermal expansion body 434. When the position of the limiting slide 4351 is aligned with the longitudinal arm of the L-shaped groove, at the same time, the first push rod 431 cooperates with the strip groove 4311 through the first round boss 421 to drive the three-way switching valve 42 to rotate, so that the three-way switching valve 42 is reset to connect the inlet end 4111 with the first flow channel 4112. Then, under the combined action of the vertical thermal expansion body 4331 and the vertical spring 4333, the first push rod 431 moves in the opposite direction in the vertical direction, and the limiting slide 4351 moves along the longitudinal arm of the L-shaped groove, so that the first push rod 431 is reset to the initial state.

[0036] Reference Figure 2 , Figure 5 as well as Figure 7 As shown, in some embodiments of the temperature-controlled multi-cavity adaptive liquid cooling heat dissipation module, the heat dissipation housing 1 is provided with heat dissipation blades 61 rotatably along its length direction corresponding to the position of each cavity 11; when the temperature of the cooling plate 41 reaches the temperature threshold, the heat dissipation blades 61 can rotate, and the heat dissipation effect of the corresponding heat dissipation area is further enhanced by air convection, so as to realize the linkage heat dissipation of liquid cooling and air cooling.

[0037] Reference Figure 3 , Figure 6 , Figures 9 to 11 , Figures 16 to 18 As shown, in some embodiments of the temperature-controlled multi-cavity adaptive liquid cooling heat dissipation module, the heat dissipation housing 1 is provided with conductive plates 62 corresponding to the position of each heat dissipation blade 61. One end of the conductive plate 62 is electrically connected to the corresponding heat dissipation blade 61, and the other end is electrically connected to the pressure sensor 63. The cooling plate 41 is provided with arc-shaped holes 415 corresponding to the position of each pressure sensor 63. The three-way switching valve 42 has a second circular boss 423 protruding on the side facing away from the smart terminal. The second circular boss 423 is movably embedded in the arc-shaped hole 415. When the three-way switching valve 42 drives the second circular boss 423 to rotate to the position corresponding to the pressure sensor 63, the second circular boss 423 squeezes the pressure sensor 63, causing the pressure sensor 63 to generate a feedback signal. The control system connects the power circuit of the heat dissipation blade 61 according to the feedback signal, driving the heat dissipation blade 61 to rotate. When the three-way switching valve 42 is reset, the second circular boss 423 disengages from the pressure sensor 63, the pressure sensor 63 signal disappears, and the heat dissipation blade 61 stops working, realizing the automatic start and stop of the heat dissipation blade 61 and avoiding energy waste.

[0038] The above description is only a preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of this patent application are included within the protection scope of this patent application.

Claims

1. A temperature-controlled multi-cavity adaptive liquid cooling heat dissipation module for smart terminals, characterized in that, It includes a heat dissipation housing and a flow pump and a coolant tank disposed on the heat dissipation housing; the side of the heat dissipation housing facing the smart terminal has multiple recesses distributed sequentially along its length, and each recess is provided with a water cooling unit; Each water-cooling unit includes a cooling plate and a switching mechanism located on the cooling plate. The cooling plate has a liquid cooling channel, which includes an inlet end, a first flow channel, a second flow channel, and an outlet end. The two ends of the first flow channel and the second flow channel are connected to the inlet end and the outlet end, respectively. The length of the first flow channel is less than the length of the second flow channel. The liquid cooling channels of each water-cooling unit are connected in series along the direction of the heat dissipation shell so that the flow pump draws the coolant in the coolant tank through each water-cooling unit and then returns it to the coolant tank. The switching mechanism is configured to allow the coolant to flow through the water-cooling unit along the path of the inlet end, the first flow channel, and the outlet end when the temperature of the cooling plate has not reached the temperature threshold. When the temperature threshold is reached, the coolant flows through the corresponding water-cooling unit along the path of the inlet, the second flow channel, and the outlet.

2. The temperature-controlled multi-cavity adaptive liquid cooling heat dissipation module according to claim 1, characterized in that, The switching mechanism includes a three-way switching valve and a drive assembly. The three-way switching valve is rotatably located at the junction of the inlet end, the first flow channel, and the second flow channel. When the temperature of the cooling plate has not reached the temperature threshold, the drive assembly causes the three-way switching valve to connect the inlet end with the first flow channel and simultaneously close the second flow channel. When the temperature of the cooling plate reaches the temperature threshold, the three-way switching valve causes the three-way switching valve to connect the inlet end with the second flow channel and simultaneously close the first flow channel.

3. The temperature-controlled multi-cavity adaptive liquid cooling heat dissipation module according to claim 2, characterized in that, The drive assembly includes a first push rod slidably mounted on a cooling plate, and a horizontal drive group and a vertical drive group mounted on the cooling plate. The first push rod has a vertically oriented slot on the side facing the three-way switching valve. The horizontal drive group is used to drive the first push rod to slide horizontally, and the vertical drive group is used to drive the first push rod to slide vertically. The three-way switching valve has a first circular boss protruding on the side facing the first push rod. The first circular boss is movably embedded in the slot.

4. The temperature-controlled multi-cavity adaptive liquid cooling heat dissipation module according to claim 3, characterized in that, The lateral drive assembly includes a first lateral thermal expansion body, a lateral slider, and a first lateral spring; the fixed end of the first lateral thermal expansion body is connected to a cooling plate; the lateral slider is slidably disposed on the cooling plate; the first lateral spring is disposed between the first lateral thermal expansion body and the lateral slider; one end of the first lateral spring is connected to the movable end of the first lateral thermal expansion body, and the other end is connected to one end of the lateral slider; the other end of the lateral slider is slidably engaged with a first push rod.

5. The temperature-controlled multi-cavity adaptive liquid cooling heat dissipation module according to claim 3, characterized in that, The vertical drive assembly includes a vertical thermal expansion body, a vertical slider, and a vertical spring; the fixed end of the vertical thermal expansion body is connected to a cooling plate; the vertical slider is slidably disposed on the cooling plate along the vertical direction; the vertical spring is disposed between the vertical thermal expansion body and the vertical slider; one end of the vertical spring is connected to the movable end of the vertical thermal expansion body, and the other end is connected to one end of the vertical slider; the other end of the vertical slider is slidably engaged with the first push rod.

6. The temperature-controlled multi-cavity adaptive liquid cooling heat dissipation module according to claim 3, characterized in that, The first circular boss is elastically floatingly connected with a locking pin along its axial direction, and the strip groove is recessed with a locking groove; when the inlet end is connected to the second flow channel, the locking pin and the locking groove are positioned correspondingly, and the locking pin is movably embedded in the locking groove, thereby unlockably locking the three-way switching valve.

7. The temperature-controlled multi-cavity adaptive liquid cooling heat dissipation module according to claim 3, characterized in that, The first push rod has a sliding cavity along its length at the end away from the transverse drive assembly. The sliding cavity contains a second transverse thermal expansion body, a second push rod, and a second transverse spring. The fixed end of the second transverse thermal expansion body is fixed to the inner wall of the sliding cavity. One end of the second push rod is slidably disposed in the sliding cavity, and the other end protrudes out of the sliding cavity and has a limiting slide. The two ends of the second transverse spring are respectively connected to the movable end of the second transverse thermal expansion body and one end of the second push rod. The cooling plate is recessed with an L-shaped groove, and the limiting slide is movably embedded in the L-shaped groove; the cooling plate is also provided with an unlocking component; when the inlet end is connected to the second flow channel, the axis of the first round boss and the center line of the cross arm section of the L-shaped groove are on the same horizontal line, and the unlocking component is configured to: under the drive of the second push rod, cause the axis of the first round boss to separate from the center line of the cross arm section of the L-shaped groove and be on the same horizontal line.

8. The temperature-controlled multi-cavity adaptive liquid cooling heat dissipation module according to claim 7, characterized in that, The sliding cavity has a notch on the side facing the cooling plate; the cooling plate has a groove recessed on the side facing the smart terminal, corresponding to the horizontal arm section of the L-shaped groove, and a wedge-shaped groove is recessed at the bottom of the groove near the three-way switching valve. The unlocking assembly includes a third push rod, a first locking block, a second locking block, a first reset spring, and a second reset spring. The third push rod is slidably mounted on a cooling plate. The end of the third push rod near the three-way switching valve is an inclined end, and the end of the third push rod away from the three-way switching valve is slidably mounted in a sliding groove and has a through-hole. The first locking block and the second locking block are slidably mounted at opposite ends of the sliding hole. The first locking block has inclined surfaces on both sides at the end away from the second locking block. The first reset spring is located in the sliding hole, and its two ends are respectively connected to the first locking block and the second locking block. The two ends of the second reset spring are respectively connected to the groove wall near the wedge-shaped groove of the sliding groove and the end of the third push rod away from the three-way switching valve. When the second locking block protrudes into the wedge-shaped groove, the first locking block is received in the sliding hole; when the second locking block is received in the sliding hole, the first locking block can protrude out of the sliding hole and protrude into the sliding cavity through the notch under the elastic force of the first return spring.

9. The temperature-controlled multi-cavity adaptive liquid cooling heat dissipation module according to claim 1, characterized in that, The heat dissipation housing is provided with heat dissipation blades that rotate along its length to correspond to the position of each cavity. The heat dissipation blades can rotate when the temperature of the cooling plate reaches the temperature threshold.

10. The temperature-controlled multi-cavity adaptive liquid cooling heat dissipation module according to claim 9, characterized in that, The heat dissipation housing is provided with a conductive sheet corresponding to the position of each heat dissipation blade. One end of the conductive sheet is electrically connected to the corresponding heat dissipation blade, and the other end is electrically connected to the pressure sensor. The cooling plate is provided with an arc hole corresponding to the position of each pressure sensor. The three-way switching valve has a second circular boss protruding on the side facing away from the smart terminal; the second circular boss is movably embedded in the arc hole; When the three-way switching valve drives the second round boss to rotate to the position corresponding to the pressure sensor, the second round boss squeezes the pressure sensor, causing the pressure sensor to generate a feedback signal, so as to connect the power circuit of the heat dissipation blade according to the feedback signal.

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