Self-circulation heat dissipation system of portable computer and portable computer

Abstract

The utility model relates to a portable computer's self circulation heat abstractor and portable computer, portable computer's self circulation heat abstractor includes mainboard, heat dissipation module, thermoelectric conversion module and installs power management module on the mainboard, heat dissipation module includes heat dissipation board, heat dissipation fan, heat dissipation fin and heat pipe, heat dissipation board sets up in the high heat -generating area of mainboard to absorb heat source heat, heat pipe connects heat dissipation board and heat dissipation fin to conduct heat, and heat dissipation fin is installed at the air inlet of heat dissipation fan to radiate heat, the hot end of thermoelectric conversion module is pasted on heat pipe and / or the high temperature surface of heat dissipation fin, and the cold end is pasted at the air inlet of heat dissipation fan and converts the temperature difference of both ends into electric energy, thermoelectric conversion module and heat dissipation fan are electrically connected power management module respectively, and the electric energy of thermoelectric conversion module is adjusted and exported to heat dissipation fan through power management module to adjust the rotating speed of heat dissipation fan.

Description

Technical Field

[0001] This utility model relates to the field of electronic computer technology, and in particular to a self-circulating heat dissipation system for a portable computer and a portable computer. Background Technology

[0002] As the performance of portable computers continues to improve, the power consumption and heat generation of their core computing units, such as CPU (Central Processing Unit) and GPU (Graphics Processing Unit), have also shown a significant upward trend. This places higher demands on the heat dissipation system of portable computers and also increases the power supply burden on the batteries of portable computers.

[0003] Currently, the mainstream cooling solution for portable computers is a combination of heat pipes and cooling fans. This relies on forced convection cooling. Specifically, the heat pipes achieve efficient heat transfer through the rapid phase change cycle of their internal working fluid (such as pure water or ammonia) (liquid evaporation at the heat-absorbing end and vapor condensation at the heat-releasing end). The cooling fan then accelerates airflow over the heat-dissipating fins, which are coated with a large amount of heat, ultimately dissipating the waste heat to the external environment through convection heat transfer. This cooling solution is essentially a "dissipative" cooling method, simply removing waste heat quickly to the outside of the device to prevent chip overheating. This process results in the direct dissipation of heat generated by the device without any utilization, leading to energy waste and reducing the energy efficiency of the portable computer.

[0004] Thermoelectric Generation (TEG) is a technology based on the Seebeck effect. Specifically, when a temperature gradient (ΔT) exists between the two ends (hot and cold ends) of two different conductors or semiconductors forming a circuit, the directional diffusion of charge carriers (electrons or holes) within the materials generates a continuous electromotive force, thus directly converting heat energy into electrical energy. Besides this core advantage of energy recovery, TEG technology also boasts a series of advantages, including no moving parts, quiet operation, small size for easy integration, high reliability, long lifespan, and maintenance-free operation. Summary of the Invention

[0005] Therefore, the purpose of this utility model is to provide a self-circulating heat dissipation system for portable computers, which uses a thermoelectric conversion module to convert the heat generated by the motherboard during operation into electrical energy to power the cooling fan, thereby achieving partial energy recovery and circulating power supply, and at the same time, it can automatically adjust the heat dissipation efficiency according to the motherboard temperature.

[0006] The purpose of this invention is also to provide a portable computer that uses a thermoelectric conversion module to convert the heat generated by the motherboard during operation into electrical energy to power the cooling fan, thereby achieving partial energy recovery and cyclic power supply, and can also achieve the effect of automatically adjusting the heat dissipation efficiency according to the motherboard temperature.

[0007] To achieve the above objectives, this utility model provides a self-circulating heat dissipation system for a portable computer, including a motherboard, a heat dissipation module, a thermoelectric conversion module, and a power management module mounted on the motherboard. The heat dissipation module includes a heat sink, a cooling fan, heat dissipation fins, and heat pipes. The heat sink is located in the high-heat area of ​​the motherboard to absorb heat from the heat source. The heat pipes connect the heat sink and the heat dissipation fins to conduct heat. The heat dissipation fins are mounted at the air inlet of the cooling fan for heat dissipation. The hot end of the thermoelectric conversion module is attached to the heat pipe and / or the high-temperature surface of the heat dissipation fins, and the cold end is attached to the air inlet of the cooling fan, converting the temperature difference between the two ends into electrical energy. The thermoelectric conversion module and the cooling fan are electrically connected to the power management module, and the electrical energy converted by the thermoelectric conversion module is regulated and output to the cooling fan through the power management module to adjust the speed of the cooling fan.

[0008] The evaporation section of the heat pipe is fixed to the heat dissipation plate, the condensation section of the heat pipe is fixed to the heat dissipation fins, the hot end of the thermoelectric conversion module is attached to the condensation section of the heat pipe, and the cold end is attached to the air inlet of the cooling fan, converting the temperature difference between the two ends into electrical energy.

[0009] The motherboard has a CPU and GPU located in the high-heat area.

[0010] The thermoelectric conversion module used is the MONTEG 4X4 from Thermoelectric Conversion Systems Ltd. This product measures approximately 40×40 mm and is a standard 4×4 thermocouple array module.

[0011] The power management unit uses Linear Technology's LTC3588-1. This chip employs a DC-DC converter to stabilize the output voltage and current.

[0012] The heat sink is made of copper.

[0013] The hot end of the thermoelectric conversion module is glued to the heat pipe and / or the high-temperature surface of the heat sink fins, and the cold end is glued to the air inlet of the cooling fan.

[0014] This utility model also provides a portable computer, including a host and a display screen mounted on the host. The host includes a housing and a self-circulating heat dissipation system of the portable computer disposed inside the housing.

[0015] The beneficial effects of this utility model are as follows: This utility model provides a self-circulating heat dissipation system for portable computers and a portable computer. It can use a thermoelectric conversion module to convert the heat energy generated by the motherboard during operation into electrical energy to power the cooling fan. It can realize partial energy recovery and circulating power supply, thereby saving energy and alleviating the power supply pressure on the portable computer battery. Furthermore, this utility model supplies the electrical energy converted by the thermoelectric conversion module to the cooling fan to adjust the speed of the cooling fan, which can achieve the effect of automatically adjusting the heat dissipation efficiency according to the motherboard temperature. Attached Figure Description

[0016] The technical solution and other beneficial effects of this utility model will become apparent from the following detailed description of specific embodiments, in conjunction with the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the assembly of a self-circulating heat dissipation system for a portable computer according to an embodiment of the present invention.

[0018] Figure 2 for Figure 2 The left view;

[0019] Figure 3 for Figure 3 A schematic diagram of the decomposed structure;

[0020] Figure 4 This is a three-dimensional schematic diagram of a portable computer according to an embodiment of the present invention. Detailed Implementation

[0021] To further illustrate the technical means and effects of this utility model, the following detailed description is provided in conjunction with the preferred embodiments of this utility model and their accompanying drawings.

[0022] See Figure 1-3This utility model provides a self-circulating heat dissipation system 12 for a portable computer, including a motherboard 121, a heat dissipation module 122, a thermoelectric conversion module 123, and a power management module 124 mounted on the motherboard 121. The heat dissipation module 122 includes a heat sink 1221, a cooling fan 1222, heat dissipation fins 1223, and a heat pipe 1224. The heat sink 1221 is disposed in the high-heat area of ​​the motherboard 121 to absorb heat from the heat source. The heat pipe 1224 connects the heat sink 1221 and the heat dissipation fins 1223 to conduct heat. 23 is installed at the air inlet of the cooling fan 1222 for heat dissipation; the hot end of the thermoelectric conversion module 123 is attached to the heat pipe 1224 and / or the high-temperature surface of the heat dissipation fins 1223, and the cold end is attached to the air inlet of the cooling fan 1222, converting the temperature difference between the two ends into electrical energy; the thermoelectric conversion module 123 and the cooling fan 1222 are respectively electrically connected to the power management module 124, and the electrical energy converted by the thermoelectric conversion module 123 is regulated and output to the cooling fan 1222 through the power management module 124 to regulate the speed of the cooling fan 1222.

[0023] When the temperature of the high-heat area of ​​the motherboard 121 is high, more electrical energy is converted by the thermoelectric conversion module 123, which can support the cooling fan 1222 to work at a higher speed, improving heat dissipation efficiency. As the temperature of the high-heat area of ​​the motherboard 121 decreases due to improved heat dissipation efficiency, the electrical energy converted by the thermoelectric conversion module 123 also decreases, and the speed of the cooling fan 1222 also decreases. Therefore, the cooling fan speed can be adjusted according to the temperature of the high-heat area of ​​the motherboard 121 to regulate heat dissipation efficiency. Thus, the self-circulating cooling system of this portable computer can use the thermoelectric conversion module to convert the heat generated by the motherboard during operation into electrical energy to power the cooling fan, achieving partial energy recovery and circulating power supply, thereby saving energy and alleviating the power supply pressure on the portable computer battery. Furthermore, by supplying the electrical energy converted by the thermoelectric conversion module to the cooling fan to adjust its speed, this invention can automatically adjust the heat dissipation efficiency according to the motherboard temperature.

[0024] Preferably, the evaporation section of the heat pipe 1224 is fixed on the heat sink 1221, the condensation section of the heat pipe 1224 is fixed on the heat sink fins 1223, the hot end of the thermoelectric conversion module 123 is attached to the condensation section of the heat pipe 1224, and the cold end is attached to the air inlet of the cooling fan 1222, converting the temperature difference between the two ends into electrical energy.

[0025] Specifically, the high-heat area of ​​the motherboard 121 is equipped with a CPU 1211 and a GPU 1212.

[0026] Preferably, the thermoelectric conversion module 123 is a MONTEG 4X4 from Thermoelectric Conversion Systems Ltd. This product is approximately 40×40 mm in size and is a standard 4×4 thermocouple array module.

[0027] Preferably, the power management unit 124 is the Linear Technology LTC3588-1. This chip uses a DC-DC converter to stabilize the output voltage and current.

[0028] Preferably, the heat sink 1221 is made of copper.

[0029] Preferably, the hot end of the thermoelectric conversion module 123 is glued to the heat pipe 1224 and / or the high-temperature surface of the heat dissipation fins 1223, and the cold end is glued to the air inlet of the cooling fan 1222.

[0030] See Figure 1-4 The present invention also provides a portable computer, including a host 1 and a display screen 2 mounted on the host 1. The host 1 includes a housing 11 and a self-circulating heat dissipation system 12 of the portable computer disposed inside the housing 11.

[0031] The portable computer of this invention can use a thermoelectric conversion module to convert the heat generated by the motherboard during operation into electrical energy to power the cooling fan. This enables partial energy recovery and cyclic power supply, thereby saving energy and alleviating the power supply pressure on the portable computer's battery. Furthermore, the electrical energy converted by the thermoelectric conversion module is supplied to the cooling fan to adjust the fan speed, achieving the effect of automatically adjusting the heat dissipation efficiency according to the motherboard temperature.

[0032] In summary, this invention provides a self-circulating heat dissipation system for portable computers and a portable computer in general. It can use a thermoelectric conversion module to convert the heat generated by the motherboard during operation into electrical energy to power the cooling fan, thereby achieving partial energy recovery and circulating power supply, which can save energy and alleviate the power supply pressure on the portable computer battery. Furthermore, this invention supplies the electrical energy converted by the thermoelectric conversion module to the cooling fan to adjust the fan speed, which can achieve the effect of automatically adjusting the heat dissipation efficiency according to the motherboard temperature.

[0033] As described above, those skilled in the art can make various other corresponding changes and modifications based on the technical solution and concept of this utility model, and all such changes and modifications should fall within the protection scope of the appended claims of this utility model.

Claims

1. A self-circulating heat dissipation system (12) for a portable computer, characterized in that, include: The system comprises a motherboard (121), a heat dissipation module (122), a thermoelectric conversion module (123), and a power management module (124) mounted on the motherboard (121). The heat dissipation module (122) includes a heat sink (1221), a cooling fan (1222), heat dissipation fins (1223), and a heat pipe (1224). The heat sink (1221) is located in the high-heat area of ​​the motherboard (121) to absorb heat from the heat source. The heat pipe (1224) connects the heat sink (1221) and the heat dissipation fins (1223) to conduct heat. The heat dissipation fins (1223) are mounted on the cooling fan. The heat exchanger (1222) is used to dissipate heat at the air inlet. The hot end of the thermoelectric conversion module (123) is attached to the heat pipe (1224) and / or the high-temperature surface of the heat dissipation fins (1223), and the cold end is attached to the air inlet of the cooling fan (1222) to convert the temperature difference between the two ends into electrical energy. The thermoelectric conversion module (123) and the cooling fan (1222) are electrically connected to the power management module (124). The electrical energy converted by the thermoelectric conversion module (123) is regulated and output to the cooling fan (1222) through the power management module (124) to regulate the speed of the cooling fan (1222).

2. The self-circulating heat dissipation system (12) for a portable computer as described in claim 1, characterized in that, The evaporation section of the heat pipe (1224) is fixed on the heat sink (1221), the condensation section of the heat pipe (1224) is fixed on the heat sink fins (1223), the hot end of the thermoelectric conversion module (123) is attached to the condensation section of the heat pipe (1224), and the cold end is attached to the air inlet of the cooling fan (1222) and converts the temperature difference between the two ends into electrical energy.

3. The self-circulating heat dissipation system (12) for a portable computer as described in claim 1, characterized in that, The motherboard (121) has a CPU (1211) and a GPU (1212) in the high-heat area.

4. The self-circulating heat dissipation system (12) for a portable computer as described in claim 1, characterized in that, The thermoelectric conversion module (123) is a MONTEG 4X4 from Thermoelectric Conversion Systems Ltd.

5. The self-circulating heat dissipation system (12) for a portable computer as described in claim 1, characterized in that, The power management module (124) is the LTC3588-1 from Linear Technology.

6. The self-circulating heat dissipation system (12) for a portable computer as described in claim 1, characterized in that, The heat sink (1221) is made of copper.

7. The self-circulating heat dissipation system (12) for a portable computer as described in claim 1, characterized in that, The hot end of the thermoelectric conversion module (123) is glued to the heat pipe (1224) and / or the high-temperature surface of the heat dissipation fins (1223), and the cold end is glued to the air inlet of the cooling fan (1222).

8. A portable computer, characterized in that, include: The host (1) and the display screen (2) mounted on the host (1), the host (1) including a housing (11) and a self-circulating heat dissipation system (12) of the portable computer as described in any one of claims 1-7 disposed inside the housing (11).

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