CN218448128U - Phase change material coupling heat conduction copper pipe's thermal management system - Google Patents
Phase change material coupling heat conduction copper pipe's thermal management system Download PDFInfo
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- CN218448128U CN218448128U CN202222818593.5U CN202222818593U CN218448128U CN 218448128 U CN218448128 U CN 218448128U CN 202222818593 U CN202222818593 U CN 202222818593U CN 218448128 U CN218448128 U CN 218448128U
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Abstract
The utility model discloses a phase change material coupling heat conduction copper pipe's thermal management system mainly includes first body, second body, electric core, first phase change material, second phase change material, spiral baffling board and spiral radiator. When the battery works, a large amount of heat is generated, the temperature is raised to dissipate heat, the heat generated by the battery core is transferred to the first phase change material and the second phase change material, the two phase change materials absorb the heat and then transfer the heat to the second pipe body, one part of the heat is taken away by gas in an air channel formed by the spiral baffle plate, the other part of the heat is transferred to the spiral baffle plate through the second pipe body, and finally the heat is transferred to the first pipe body and the peripheral tooth-shaped spiral fin to dissipate out of the system. When the phase-change material absorbs heat and then rises in temperature, and reaches a melting point, the temperature of the phase-change material is basically kept unchanged, and the temperature of the battery cell rises slowly and finally tends to be stable. The utility model discloses still have simple structure, convenient operation, easy advantage of implementing.
Description
Technical Field
The utility model relates to a battery thermal management technical field especially relates to a phase change material coupling heat conduction copper pipe's thermal management system.
Background
The lithium ion battery has the advantages of small mass, large energy storage capacity, long cycle life and the like, and is widely applied to the field of electric automobiles at present. With the gradual increase of energy density, the thermal safety of the battery has received a great deal of attention. The temperature of a power battery pack always restricts the popularization and the use of an electric automobile, the temperature has very obvious influence on the performance of the battery no matter the traditional lead-acid battery or the current mainstream nickel-hydrogen and lithium ion battery, and the performance of the battery is not favorably exerted when the temperature is too high or too low. The battery thermal management is used for solving the problem of heat dissipation or thermal runaway caused by the fact that the battery works under the condition of overhigh or overlow temperature, and is used for reducing the highest temperature of a battery module during the normal running of an automobile so as to avoid the thermal runaway; while reducing the maximum temperature differential to extend battery life.
In recent years, a battery thermal management system of an electric vehicle mainly comprises an air cooling system, a liquid cooling system, a heat pipe cooling system and a PCM cooling system. At present, a relatively large number of battery heat management modes actually adopted by new energy automobiles in China and south Korean are mainly air cooling, and typical examples include daily LEAF (Nissan LEAF), and Guil EV; however, for a large-scale lithium ion battery module, the module is tightly arranged inside, limited in space and poor in heat dissipation effect, so that the cooling efficiency of low air cooling cannot be matched with the ever-increasing high-power large-scale power battery system, and the temperature consistency of the power battery system is poor; the liquid cooling system is more biased to liquid cooling in Europe and America, particularly Tesla is taken as a first factor, the design and arrangement difficulty of the liquid cooling system is higher, the pressure loss of the circulating pump is increased to a certain extent by the snake-shaped cold plate, and the cooling effect is quite good. Therefore, although the liquid cooling technology has a good cooling effect, the liquid cooling technology has the defects of complex structure, more rigid connecting parts, high leakage risk, high cost, difficult maintenance and the like. With the continuous expansion of the market scale of the electric automobile and the increasingly prominent trend of lightening the electric automobile, new requirements are put forward on a thermal management system.
In the development of phase change material-based power battery thermal management research, the Phase Change Material (PCM) has the advantages of large phase change latent heat and small volume change during phase change, and is one of the main directions of battery thermal management research. The heat management system of the PCM coupled heat conduction aluminum plate is provided, and due to the fact that aluminum has good heat conductivity and small density, the aluminum is used as a heat conduction medium, and heat conduction and light weight can be achieved at the same time. The designed heat management system consisting of the expanded graphite/paraffin composite material, the aluminum pipe, the partition plate and the shell enables air to turn for many times in the flow channel, so that the heat exchange efficiency can be improved, and the safety performance is improved. However, the thermal management system of the PCM coupled heat conduction aluminum pipe only depends on the phase-change material to absorb heat generated in the working process of the battery, and dissipates heat through air cooling, so that the cooling efficiency is low, the heat dissipation effect is poor, and the temperature rise of the battery is easily overhigh. Therefore, further improvements and improvements are needed in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's not enough, provide a phase change material coupling heat conduction copper pipe's thermal management system.
The purpose of the utility model is realized through the following technical scheme:
a heat management system of a phase change material coupled heat conduction copper pipe mainly comprises a first pipe body, a second pipe body, a battery core, a first phase change material, a second phase change material, a spiral baffle plate and a spiral radiator.
Specifically, the spiral radiator is arranged on the outer wall of the first pipe body in a surrounding mode and radiates heat for the first pipe body. A plurality of second body sets up in first body, and between second body and the second body, the axis between first body and the second body is parallel to each other. And a plurality of battery cells are arranged in the second pipe body to form a battery pack. The first phase change material is filled in a transverse gap between the battery pack and the second tube body. The second phase change material is filled in the longitudinal gaps between the battery cells. The spiral baffle plate is fixedly arranged in the first pipe body. The second pipe body is fixed in the first pipe body through the spiral baffle plate.
Furthermore, the spiral baffle plate is of a plate-shaped spiral structure, and the edge of the outer edge of the spiral baffle plate is fixedly connected with the inner wall of the first pipe body. The spiral baffle plate is provided with a plurality of groups of through holes along the axial direction of the first pipe body rock. The second pipe bodies are respectively arranged in the through holes and are fixedly connected with the spiral baffle plate.
Further, the spiral radiator comprises a spiral base and a tooth-shaped spiral fin. The spiral base is spirally arranged around the outer wall of the first pipe body and fixedly connected with the first pipe body. And the plurality of tooth-shaped spiral fins are continuously arranged on the spiral base and are fixedly connected with the spiral base.
As the preferred scheme of the utility model, in order to improve thermal management system's radiating efficiency, first body and second body are established to the copper pipe.
As the preferred scheme of the utility model, form the electric short circuit through contact phase change material in order to avoid between the electricity core, first phase change material and second phase change material all adopt insulating phase change material.
As the preferred scheme of the utility model, in order to improve spiral radiator's radiating efficiency, spiral baffling board is the same with spiral radiator's spiral direction.
Further, in order to further improve thermal management system's radiating efficiency, thermal management system adopts cross-flow wind channel design to the spiral baffling board is wind channel guide wind direction, and is equipped with last air intake, right air intake, lower air outlet and left air outlet.
Specifically, an air inlet pipe is arranged on the outer wall of one end of the first pipe body, and an air outlet pipe is arranged on the outer wall of the other end of the first pipe body. The air inlet pipe is perpendicular to the first pipe body and is located at a manhole where the spiral baffle plate is an air duct. The upper air inlet is arranged on the air inlet pipe. The air outlet pipe is vertical to the first pipe body and is positioned at an outlet of the spiral baffle plate which is an air channel. The lower air outlet is arranged on the air outlet pipe. Air enters the air inlet pipe from the upper air inlet, is guided by the spiral baffle plate and then is discharged from the lower air outlet of the air outlet pipe.
Specifically, one end of the first pipe body is provided with a right air inlet, and the other end of the first pipe body is provided with a left air outlet. Air enters the spiral baffle plate from the right air inlet and is discharged from the left air outlet after being guided by the spiral baffle plate.
As the preferred scheme of the utility model, in order to further improve thermal management system's radiating efficiency, be equipped with a plurality of frustrations on the spiral baffling board and split the ventilation aperture of arranging. The small ventilation holes are randomly distributed on the spiral baffle plate.
The utility model discloses a working process and principle are: when the battery works, a large amount of heat is generated, the temperature is raised to dissipate heat, the heat generated by the battery core is transferred to the first phase change material and the second phase change material, the two phase change materials absorb the heat and then transfer the heat to the second pipe body, one part of the heat is taken away by gas in an air channel formed by the spiral baffle plate, the other part of the heat is transferred to the spiral baffle plate through the second pipe body, and finally the heat is transferred to the first pipe body and the peripheral tooth-shaped spiral fin to dissipate out of the system. When the phase-change material absorbs heat and then rises in temperature, and reaches a melting point, the temperature of the phase-change material is basically kept unchanged, and the temperature of the battery cell rises slowly and finally tends to be stable. The utility model discloses still have simple structure, convenient operation, easy advantage of implementing.
Compared with the prior art, the utility model discloses still have following advantage:
(1) The utility model provides a thermal management system of phase change material coupling heat conduction copper pipe rationally is in the same place air cooling and phase change material cooling coupling, battery module compact structure, simple to operate, simple structure.
(2) The heat management system of the phase-change material coupling heat conduction copper pipe provided by the utility model adopts the continuous spiral baffle plate and the cross flow type ventilation, so as to enhance the air cooling effect; phase change materials are filled between the battery cell and the copper pipe and between the battery cell and the battery cell, and then wrapped by the small copper pipe, because the copper has good heat conductivity, the heat conduction can be enhanced, and the heat is taken away by the wind in the air duct.
(3) The heat management system of the phase-change material coupling heat conduction copper pipe provided by the utility model adopts nine battery packs consisting of a plurality of electric cores to be fixed through the continuous spiral baffle plate, so that the battery packs are firmly fixed and are convenient to disassemble; nine battery packs are arranged in concentric circles, and the flow conditions are improved, so that the heat transfer effect is also improved.
(4) The utility model provides a phase change material coupling heat conduction copper pipe's thermal management system adopts the spiral radiator to encircle the setting on first body outer wall, and for first body heat dissipation, the gas in the wind channel that some heat was formed by the spiral baffling board in the second body is taken away, and another part passes through the second body and transmits for the spiral baffling board, finally transmits for first body and outlying profile of tooth helical fin, with heat effluvium system.
Drawings
Fig. 1 is a schematic structural diagram of a thermal management system of a phase change material coupled heat conduction copper pipe provided by the present invention.
Fig. 2 is a schematic diagram of a partial cross-sectional structure of a thermal management system of a phase-change material coupled heat conduction copper pipe according to the present invention.
Fig. 3 is a right side view of the thermal management system of the phase change material coupled thermal copper tube provided by the present invention.
Fig. 4 is a half sectional view of a thermal management system of a phase change material coupled thermal copper tube according to the present invention.
Fig. 5 is a schematic structural view of the first tube and the spiral radiator provided by the present invention.
Fig. 6 is a perspective view of the first tube and the spiral radiator provided by the present invention.
Fig. 7 is a schematic structural diagram of the second tube and the battery cell provided by the present invention.
Fig. 8 is a schematic structural diagram of the spiral baffle provided by the present invention.
Fig. 9 is a left side view of the spiral baffle provided by the present invention.
The reference numerals in the above figures illustrate:
1-a first pipe body, 2-a second pipe body, 3-an electric core, 4-a first phase change material, 5-a second phase change material, 6-a spiral baffle plate, 7-a spiral radiator, 8-a through hole, 9-a spiral base, 10-a tooth-shaped spiral fin, 11-an upper air inlet, 12-a right air inlet, 13-a lower air outlet, 14-a left air outlet, 15-an air inlet pipe and 16-an air outlet pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention will be further described with reference to the accompanying drawings and examples.
Example 1:
as shown in fig. 1 to 9, the embodiment discloses a thermal management system of a phase change material coupled heat conduction copper pipe, which mainly includes a first pipe body 1, a second pipe body 2, a battery cell 3, a first phase change material 4, a second phase change material 5, a spiral baffle 6, and a spiral heat sink 7.
Specifically, the spiral radiator 7 surrounds and is arranged on the outer wall of the first pipe body 1 to radiate heat of the first pipe body 1. A plurality of second body 2 sets up in first body 1, and the axis between second body 2 and the second body 2, between first body 1 and the second body 2 is parallel to each other. A plurality of electric core 3 installs in second body 2, constitutes the group battery. The first phase change material 4 is filled in the lateral gap between the battery pack and the second tube 2. The second phase change material 5 is filled in the longitudinal gaps between the battery cells 3. The spiral baffle 6 is fixedly arranged in the first pipe body 1. The second pipe body 2 is fixed in the first pipe body 1 through a spiral baffle plate 6.
Further, the spiral baffle 6 is a plate-shaped spiral structure, and the outer edge of the spiral baffle is fixedly connected with the inner wall of the first pipe body 1. The spiral baffle 6 is provided with a plurality of groups of through holes 8 along the axial direction of the first pipe body 1. The second pipe bodies 2 are respectively arranged in the through holes 8 and are fixedly connected with the spiral baffle plate 6.
Further, the spiral radiator 7 comprises a spiral base 9 and a tooth-shaped spiral fin 10. Spiral base 9 encircles the spiral setting of 1 outer wall of first body, and with 1 fixed connection of first body. A plurality of tooth-shaped helical fins 10 are continuously arranged on the helical base 9 and are fixedly connected with the helical base 9.
As the utility model discloses an optimal scheme, in order to improve thermal management system's radiating efficiency, first body 1 and second body 2 establish to the copper pipe.
As the preferred scheme of the utility model, in order to avoid forming electric short circuit through contact phase change material between electric core 3, first phase change material 4 and second phase change material 5 all adopt insulating phase change material.
As the preferred scheme of the utility model, in order to improve the radiating efficiency of spiral radiator 7, spiral baffling board 6 is the same with spiral radiator 7's spiral direction.
Further, in order to further improve thermal management system's radiating efficiency, thermal management system adopts cross-flow wind channel design to spiral baffling board 6 is wind channel guide wind direction, and is equipped with last air inlet 11, right air intake 12, lower air outlet 13 and left air outlet 14.
Specifically, an air inlet pipe 15 is arranged on the outer wall of one end of the first pipe body 1, and an air outlet pipe 16 is arranged on the outer wall of the other end of the first pipe body. The air inlet pipe 15 is arranged perpendicular to the first pipe body 1 and is positioned at the inlet of the spiral baffle 6 which is an air channel. The upper air inlet 11 is provided on the air inlet duct 15. The air outlet pipe 16 is arranged perpendicular to the first pipe body 1 and is positioned at an outlet of the spiral baffle 6 which is an air channel. The lower air outlet 13 is arranged on the air outlet pipe 16. Air enters the air inlet pipe 15 from the upper air inlet 11, is guided by the spiral baffle plate 6 and then is discharged from the lower air outlet 13 of the air outlet pipe 16.
Preferably, the air duct formed by the spiral baffle 6 is not limited to air cooling, and cooling liquid can be introduced from the upper air inlet 11, and heat can be taken away and dissipated by the cooling liquid.
Specifically, one end of the first pipe 1 is provided with a right air inlet 12, and the other end is provided with a left air outlet 14. Air enters the spiral baffle plate 6 from the right air inlet 12, is guided by the spiral baffle plate 6 and then is discharged from the left air outlet 14.
As the preferred scheme of the utility model, in order to further improve thermal management system's radiating efficiency, be equipped with a plurality of ventilation apertures of arranging of contusing on the spiral baffling board 6. The small ventilation holes are randomly distributed on the spiral baffle plate 6.
The utility model discloses a working process and principle are: when the battery works, a large amount of heat is generated, heat is required to be dissipated when the temperature rises, the heat generated by the battery core 3 is transferred to the first phase change material 4 and the second phase change material, the two phase change materials absorb the heat and then transfer the heat to the second pipe body 2, one part of the heat is taken away by gas in an air channel formed by the spiral baffle plate 6, the other part of the heat is transferred to the spiral baffle plate 6 through the second pipe body 2, and finally transferred to the first pipe body 1 and the peripheral tooth-shaped spiral fin 10 to dissipate the heat out of the system. When the phase-change material absorbs heat and then rises in temperature, and reaches a melting point, the temperature of the phase-change material is basically kept unchanged, and the temperature of the battery cell 3 rises slowly and finally tends to be stable. The utility model discloses still have simple structure, convenient operation, easy advantage of implementing.
Example 2:
the embodiment discloses a heat management system for a phase change material coupled heat conduction copper pipe, which mainly comprises a power battery pack and a heat management system; the power battery pack comprises a battery pack consisting of a plurality of battery cells and a battery module consisting of the battery packs connected in parallel; the heat management system comprises a phase-change material, a heat conduction copper pipe, an air duct, a continuous spiral baffle plate and a tooth-shaped spiral fin; a plurality of electric cores are connected in series in each battery pack, phase change materials are uniformly filled between the electric cores and peripheral heat conduction copper pipes, and the nine battery packs are fixed by a spiral baffle plate with holes; the air inlets of the air duct are arranged on the right side and the pipelines above the right side of the device, the air reaches the air outlets after passing through the spiral baffle plate, the air outlets are arranged on the left side and the pipelines below the left side of the device, and the battery pack is cooled by air cooling; and the periphery of the heat conduction copper pipe is wound with the tooth-shaped spiral fin to radiate heat outwards.
The continuous spiral baffle plate is made of foam metal materials such as foam and foam copper, nine holes are drilled in the foam metal materials and used for fixing each battery pack; the continuous spiral baffle plate is connected with the heat conduction copper pipe in an expansion joint and welding mode.
The fins are tooth-shaped helical fins and are made of copper or other heat-conducting metals, and the connection mode of the copper pipes and the fins adopts: and (4) resistance welding.
Nine battery packs are arranged in concentric circles.
The design of the air duct adopts cross-flow ventilation, and the air duct is provided with two air inlets and two air outlets and guides the wind direction by a continuous spiral baffle plate.
The phase change material can be an organic phase change material or an inorganic phase change material, and also can be a composite phase change material or a microcapsule phase change material.
Each battery pack of the device comprises equal or unequal cell numbers, and in the device, the cell numbers of each battery pack are the same.
Every single electric core all includes just, two utmost point posts of negative pole, and two adjacent electric cores adopt end to end connection, and the diameter of single electric core is less than the diameter of little copper pipe, fills phase change material between electric core and electric core, between electric core and heat conduction copper pipe.
The spiral baffle plates have equal pitches and are close to the length of one battery cell; the number of turns of the continuous spiral baffle plate is not suitable to be too large.
The phase change material coupling heat conduction copper pipe heat management system with the function of strengthening heat dissipation is characterized in that ribs or fins for heat dissipation are arranged on the outer side of the heat conduction copper pipe.
The utility model discloses have good samming and accuse temperature ability, phase change material absorbs the heat that produces, at supplementary peripheral fin heat dissipation, utilizes spiral wind channel to take away unnecessary heat simultaneously, and the radiating effect is better. Furthermore, the utility model discloses simple structure, energy-concerving and environment-protective, the operation is stable and reliable, and battery module is big, can satisfy small-size electric automobile needs, has wide market prospect.
Example 3:
the embodiment discloses a thermal management module of a phase change material coupling heat conduction copper pipe, which mainly comprises nine battery packs, wherein each battery pack is composed of electric cores with different or equal numbers, composite phase change materials are uniformly filled in gaps between the electric cores and small copper pipes and between the electric cores, the periphery of each battery pack is wrapped by a small copper pipe, a continuous spiral baffle plate is fixed in a large copper pipe and is connected with the heat conduction copper pipe in an expansion joint and welding mode, the spiral baffle plate is made of foam metal materials such as foam nickel and foam copper, nine small holes are drilled in the spiral baffle plate and are arranged in concentric circles for fixing the nine battery packs, tooth-shaped spiral fins are wrapped on the periphery of the large copper pipe to increase heat dissipation, the tooth-shaped spiral fins are made of copper or other heat conduction metals, and the copper pipes and the tooth-shaped spiral fins are connected by adopting a resistance welding method. The air inlet is arranged above the large copper pipe facing the starting point of the spiral baffle plate, the air inlet is arranged on the right side of the large copper pipe, the air outlet is arranged on the left side, the air outlet is arranged below the large copper pipe facing the end point of the spiral baffle plate, an air channel in the device is guided by the spiral baffle plate, and meanwhile cross-flow ventilation is adopted to enhance the heat dissipation effect.
The phase change material used in this embodiment may be an organic phase change material or an inorganic phase change material, and may be a phase change material or a microcapsule phase change material in which a material with a high thermal conductivity such as expanded graphite, a carbon nanotube, graphene, or the like is compounded with a common organic phase change material (such as paraffin, fatty acid).
The continuous spiral baffle plate is made of foam metal materials such as foam nickel and foam copper, the foam metal is corrosion-resistant, the price is low, the thermal stability is good, the heat dissipation is fast, the heat dissipation can be effectively improved, meanwhile, small holes which are arranged in a square staggered mode are drilled in the foam metal materials, the continuous spiral baffle plate not only can be used for fixing the battery pack, but also can improve the flowing condition, and therefore the heat transfer effect is improved.
The tooth-shaped helical fin is made of copper or other heat-conducting metals, and the copper has a large heat-conducting coefficient and a good heat-radiating effect.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (8)
1. A heat management system of a phase change material coupled heat conduction copper pipe is characterized by comprising a first pipe body, a second pipe body, a battery cell, a first phase change material, a second phase change material, a spiral baffle plate and a spiral radiator;
the spiral radiator is arranged on the outer wall of the first pipe body in a surrounding mode and radiates heat for the first pipe body; the second pipe bodies are arranged in the first pipe body, and the axes between the second pipe bodies and between the first pipe bodies and between the second pipe bodies are parallel to each other; a plurality of battery cells are arranged in the second pipe body to form a battery pack; the first phase change material is filled in a transverse gap between the battery pack and the second tube body; the second phase change material is filled in longitudinal gaps among the battery cells; the spiral baffle plate is fixedly arranged in the first pipe body; the second pipe body is fixed in the first pipe body through the spiral baffle plate.
2. The phase change material coupled heat conduction copper tube thermal management system according to claim 1, wherein the spiral baffle is of a plate-shaped spiral structure, and the outer edge of the spiral baffle is fixedly connected with the inner wall of the first tube body; the spiral baffle plate is provided with a plurality of groups of through holes along the axial direction of the first pipe body rock; the second pipe bodies are respectively arranged in the through holes and are fixedly connected with the spiral baffle plate.
3. The phase change material coupled thermal management system for a thermal copper tube according to claim 1, wherein the spiral heat sink comprises a spiral base and a tooth-shaped spiral fin; the spiral base is spirally arranged around the outer wall of the first pipe body and is fixedly connected with the first pipe body; and the plurality of tooth-shaped spiral fins are continuously arranged on the spiral base and are fixedly connected with the spiral base.
4. The phase change material coupled thermal management system of a thermally conductive copper tube of claim 1, wherein the first tube and the second tube are copper tubes.
5. The phase change material coupled thermal management system of a thermal conduction copper tube according to claim 1, wherein the first phase change material and the second phase change material are both insulating composite phase change materials.
6. The phase change material coupled thermal management copper tube system of claim 1, wherein the spiral baffle plate is in the same spiral direction as the spiral heat sink.
7. The phase-change material coupled heat conduction copper pipe thermal management system according to claim 1, wherein the thermal management system adopts a cross-flow air duct design, uses a spiral baffle plate as an air duct to guide the wind direction, and is provided with an upper air inlet, a right air inlet, a lower air outlet and a left air outlet;
an air inlet pipe is arranged on the outer wall of one end of the first pipe body, and an air outlet pipe is arranged on the outer wall of the other end of the first pipe body; the air inlet pipe is arranged perpendicular to the first pipe body and is positioned at an inlet of the spiral baffle plate serving as an air channel; the upper air inlet is arranged on the air inlet pipe; the air outlet pipe is vertical to the first pipe body and is positioned at an outlet of the spiral baffle plate which is an air channel; the lower air outlet is arranged on the air outlet pipe; air enters the air inlet pipe from the upper air inlet, is guided by the spiral baffle plate and then is discharged from the lower air outlet of the air outlet pipe;
one end part of the first pipe body is provided with a right air inlet, and the other end part of the first pipe body is provided with a left air outlet; air enters the spiral baffle plate from the right air inlet and is discharged from the left air outlet after being guided by the spiral baffle plate.
8. The phase change material coupled heat conduction copper tube thermal management system according to claim 1, wherein a plurality of ventilation holes arranged in a crack-resistant manner are formed in the spiral baffle plate; the small ventilation holes are randomly distributed on the spiral baffle plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222818593.5U CN218448128U (en) | 2022-10-19 | 2022-10-19 | Phase change material coupling heat conduction copper pipe's thermal management system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222818593.5U CN218448128U (en) | 2022-10-19 | 2022-10-19 | Phase change material coupling heat conduction copper pipe's thermal management system |
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| CN218448128U true CN218448128U (en) | 2023-02-03 |
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| CN202222818593.5U Active CN218448128U (en) | 2022-10-19 | 2022-10-19 | Phase change material coupling heat conduction copper pipe's thermal management system |
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