This application claims the priority benefit of Taiwan application serial no. 111107523, filed on Mar. 2, 2022. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.
The disclosure relates to a thermoelectric cooling module.
A thermoelectric material is a functional semiconductor material that may convert two different types of energy, heat and electricity, to each other without the assistance of other specific external forces or machine elements, and main modes of the thermoelectric conversion include the power generation effect and the cooling effect.
Taking the thermoelectric cooling effect as an example, a P-type semiconductor and an N-type semiconductor are connected in series, and then a direct current is applied to enable carriers (holes or electrons) therein to move in different directions, thereby forming a temperature difference.
Generally speaking, the P-type semiconductors and the N-type semiconductors are mostly arranged in a cell array. However, due to spacings or gaps between the cells, external water vapor may easily enter, thereby causing an electrical short circuit. Especially after the above temperature difference is formed, condensation is easy to occur on the cold side, which increases the possibility of water vapor entering the spacings or gaps, and even causes corrosion to the P-type semiconductors and the N-type semiconductors, seriously affecting the service lives thereof.
The disclosure provides a thermoelectric cooling module, in which a filler is added between adjacent thermoelectric units and a surrounding to form a seamless structure and effectively block infiltration of water vapor.
The thermoelectric cooling module includes multiple P-type thermoelectric units, multiple N-type thermoelectric units, multiple electrical connecting members, and a filler. Each of the electrical connecting members is electrically connected between the P-type thermoelectric unit and the N-type thermoelectric unit that are adjacent. The filler is disposed between the P-type thermoelectric unit and the N-type thermoelectric unit that are adjacent, and is disposed at a surrounding of the P-type thermoelectric units and the N-type thermoelectric units.
Based on the above, in the thermoelectric cooling module, the filler is disposed between the P-type thermoelectric unit and the N-type thermoelectric unit that are adjacent, and is also disposed at the surrounding of the P-type thermoelectric units and the N-type thermoelectric units. In this way, the filler may effectively avoid the possibility of damage to the P-type thermoelectric units and the N-type thermoelectric units due to the water vapor, thereby improving the structural strength and service life of the thermoelectric cooling module.
Here, the P-type thermoelectric units P and the N-type thermoelectric units N are, for example, impurity semiconductor structures formed by bismuth telluride (Bi2Te3), which are electrically connected together through the electrical connecting members 120 to form an electrical couple.
Furthermore, the thermoelectric cooling module 100 in this embodiment further includes a power supply module 110 and a pair of insulating substrates 130. The insulating substrate 130 is, for example, a ceramic substrate. The P-type thermoelectric units P and the N-type thermoelectric units N stand in an array between the pair of insulating substrates 130, while the electrical connecting members 120 are also distributed on an upper layer and a lower layer in a staggered way along with the pair of insulating substrates 130. The power supply module 110 is electrically connected in series to the electrical connecting members 120, the P-type thermoelectric units P, and the N-type thermoelectric units N. When the power supply module 110 supplies power to the P-type thermoelectric units P and the N-type thermoelectric units N, the P-type thermoelectric units P and the N-type thermoelectric units N absorb heat from an external environment to be a heat absorption side S1 of the thermoelectric cooling module 100 through one of the insulating substrates 130, such as the insulating substrate 130 located on the upper layer as shown in
Further, the power supply module 110 in this embodiment includes a (DC) power source 113, a first conductive line 111, and a second conductive line 112. The power source 113 is electrically connected to one of the N-type thermoelectric units N through the first conductive line 111, and the power source 113 is electrically connected to one of the P-type thermoelectric units P through the second conductive line 112, so that the power source 113, the first conductive line 111, the P-type thermoelectric units P, the N-type thermoelectric units N, the electrical connecting members 120, and the second conductive line 112 form an electrical path.
As shown in
Here, an injection method of the above liquid materials is not limited, which may be appropriately adjusted according to an external structure of the thermoelectric cooling module 100. In this embodiment, the thermoelectric cooling module 100 has a rectangular parallelepiped structure. Therefore, referring to
Based on the above, in the embodiments of the disclosure, in the thermoelectric cooling module, the filler is disposed between the P-type thermoelectric unit and the N-type thermoelectric unit that are adjacent, and is also disposed at the surrounding of the P-type thermoelectric units and the N-type thermoelectric units. Further, the filler includes the soft filling portion and the hard filling portion. The soft filling portion may effectively discharge the water vapor out of the thermoelectric cooling module, and the hard filling portion may eliminate the connection of the P-type thermoelectric units and N-type thermoelectric units and the external environment. Accordingly, the filler may avoid the possibility of damage to the P-type thermoelectric units and the N-type thermoelectric units due to the water vapor, thereby improving the structural strength and service life of the thermoelectric cooling module.
Number | Date | Country | Kind |
---|---|---|---|
111107523 | Mar 2022 | TW | national |