KR102436212B1 - Design and Performance Analysis of Powering a Wireless Earphone by a Thermoelectric Generator - Google Patents

Abstract

The present invention relates to a portable thermoelectric generator for a wireless earphone battery. Therefore, the technical point of the present invention is to form a thermoelectric generator in which a set of N-type and P-type semiconductor legs and a conductor ring pad made of a metal material are integrated. The thermoelectric generator is a kind of power ring to be mounted on a wireless earphone, and the thermoelectric generator allows the difference between the body temperature of a user (the temperature of the surface which touches the ear) and the temperature in the air, so that the current (voltage) generated when the electron moves (from a place at high temperature to a place at low temperature) assists in charging the battery, and the use time of the wireless earphone can be extended.

Description

Portable Thermoelectric Generator for Wireless Earphone Battery {Design and Performance Analysis of Powering a Wireless Earphone by a Thermoelectric Generator}

The present invention is such that a semiconductor leg set and a metal conductor ring pad combined with N-type and P-type form an integral thermoelectric generator, wherein the thermoelectric generator is mounted on a wireless earphone as a kind of powering type, and the user's body temperature When an electric current (voltage) is generated during the movement of electrons (moving from a high temperature to a low temperature) due to the temperature difference between (the temperature of the surface that is inserted into the ear) and the temperature in the air, the generated power is used to charge the stored battery. It relates to a portable thermoelectric generator for a wireless earphone battery, characterized in that the ease of use is increased by supporting the wireless earphone, thereby extending the use time of the wireless earphone.

In general, wireless earphones are formed to make voice calls or listen to music while communicating with electronic devices such as mobile phones (smartphones) or sound devices through short-range wireless communication via Bluetooth.

On the other hand, in the conventional wireless earphone, the Bluetooth module receives driving power by a built-in battery, and when the battery is discharged during use, it is recharged through a separate adapter or charging jack (or charger).

In other words, the charging device (charger) dedicated to the wireless earphone is a type of case holder so that the battery can be charged along with the storage of the wireless earphone. formed to be filled.

Accordingly, the battery of the wireless earphone is made smaller than the battery of the electronic device in order to improve portability.

For example, the battery of an electronic device can drive the main body for about 30 hours, whereas the battery of a Bluetooth wireless earphone can drive the main body for about 10 hours.

Therefore, when using the wireless earphone through Bluetooth between an electronic device (including a smartphone) and a wireless earphone outdoors without a charger, when the battery of the wireless earphone is exhausted, data reception is not received and the use becomes impossible.

That is, since the electronic device and the Bluetooth wireless earphone operate in conjunction with each other, users cannot use the electronic device and the Bluetooth wireless earphone after a certain period of time when they are charged by the conventional charging method.

As a result, when the energy stored in the battery is exhausted during normal or frequent use of the conventional wireless earphone, it is necessary to find a wired charging device (charger) and try to recharge it. , in particular, it is a situation in which cumbersome use continues as it has to spend time wandering in search of a charger.

1. Republic of Korea Patent Publication No. 10-2121185 (Registered on June 4, 2020)

The present invention is to solve the above problems, the technical gist of which is a TEG (Thermoelectric Generator) power generation device, so that a semiconductor leg set and a metal conductor ring pad made of a metal material combined in N-type and P-type to form an integrated thermoelectric generator. However, the thermoelectric generator is a kind of powering type to be mounted on the wireless earphone, which aims to provide a way to extend the battery use time to improve the usability.

That is, the present invention causes a current (voltage) to be generated when an electron is moved (moved from a high temperature to a low temperature) due to the temperature difference between the user's body temperature (the surface temperature that is inserted into the ear) and the temperature in the air, The purpose of this is to provide a way to extend the use time of the wireless earphone (increasing ease of use) by allowing the generated power to assist in charging the battery.

In order to achieve this object, the present invention provides a semiconductor leg set 100 including a plurality of N-type semiconductor legs 110 and P-type semiconductor legs 120; The first conductive plate 210 made of metal is in contact with both ends of the opening in the longitudinal direction of the semiconductor leg set, and the secondary conductive plate 220 made of metal is energized on the outer surface of the first conductive plate 210 ( a conductive ring pad 200 to allow charge_current to move according to the difference in body temperature versus ambient temperature); A power storage circuit 300 electrically connected to one end of the conductive ring pad and the battery to supply current to the battery; made up of

Accordingly, the semiconductor leg set 100 has an N-type semiconductor leg 110 and a P-type semiconductor leg 120 in a cross arrangement along the circumferential direction (each between the N-type semiconductor legs 110 is a P-type semiconductor leg 120 ) is inserted in the middle), but when the N-type semiconductor leg 110 and the P-type semiconductor leg 120 are cross-arranged, the shape of any one of a cylindrical shape, a square tubular shape, a cube shape, an oval shape, or a polygonal shape is formed and cross-arranged It is formed so as to provide a connection path when electrons are moved while making it possible.

At this time, the primary conductive plate 210 of the conductor ring pad 200 is formed of a copper material or an equivalent material (material), and the secondary conductive plate 220 is formed of an aluminum material or an equivalent material (material). However, the surface area of the secondary conductive plate 220 compared to the primary conductive plate 210 is formed to be at least 10% wider than the first conductive plate 210, so that the contact area with the user's skin or the atmosphere is expanded.

As described above, the present invention is formed to be built-in in the wireless earphone as a kind of powering type, and the movement of electrons (from a high temperature to a low temperature) due to the temperature difference between the user's body temperature (the surface temperature that touches the ear) and the air. movement) is generated, a bar current (voltage) flows, which has the effect of extending the use time of the wireless earphone by allowing the generated power to assist the charging of the battery.

1 to 2 are detailed exemplary views showing a thermoelectric generator (TEG) according to the present invention,
3 is an exemplary view of a wireless earphone equipped with a thermoelectric generator (TEG) according to the present invention;
4 is an exemplary view showing the principle of charge transfer and current generation of a thermoelectric generator (TEG) according to the present invention;
5 is an exemplary view showing an electrical connection circuit configuration between a thermoelectric generator (TEG) and a battery according to the present invention;
6 to 10 are exemplary views illustrating electrical characteristic simulations of a thermoelectric generator (TEG) according to the present invention.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

First, as shown in FIGS. 1 to 10 , the present invention is largely composed of a semiconductor leg set 100 , a conductor ring pad 200 , and a power storage circuit 300 .

Accordingly, the semiconductor leg set 100 includes a plurality of N-type semiconductor legs 110 and P-type semiconductor legs 120 .

At this time, the semiconductor leg set 100 has an N-type semiconductor leg 110 and a P-type semiconductor leg 120 in a cross arrangement along the circumferential direction (each between the N-type semiconductor legs 110 is a P-type semiconductor leg 120 ) is formed to be inserted in the middle).

Accordingly, when the N-type semiconductor leg 110 and the P-type semiconductor leg 120 are cross-arranged, they form any one of a cylindrical or rectangular cylindrical shape, a cube shape, an elliptical shape, or a polygonal shape while being cross-arranged. It is formed to provide a connection passage when moving.

For reference, although the N-type semiconductor leg 110 and the P-type semiconductor leg 120 are shown as being provided in a pair of ten as shown in FIGS. 1 to 2 , a fine manufacturing structure (width diameter or length interval) 0.5~5mm), it is formed so that it can be cross-arranged with a plurality of columns with excellent thermal response.

On the other hand, the conductive ring pad 200 is such that the first conductive plate 210 made of a metallic material is in contact with both ends of the longitudinal opening of the semiconductor leg set, and the outer surface of the first conductive plate 210 is made of a metallic material. The secondary conductive plate 220 is formed to conduct electricity (charge_current movement according to the difference between body temperature and ambient temperature).

At this time, the primary conductive plate 210 of the conductive ring pad 200 is formed of a copper material or an equivalent material (material), and the secondary conductive plate 220 is replaced with an aluminum material or an equivalent material (material) It is desirable to be able to

That is, in the conductive ring pad, the secondary conductive plate is in contact with the user's skin, and the larger the area, the higher the heat absorption efficiency is secured. A gradient shape is preferable, and in particular, it is preferable to use aluminum having high thermal conductivity and a material equivalent to or superior to the same.

In addition, it is preferable to set the material of the secondary conductive plate to a material having a good feel so that there is no objection to the skin.

In addition, the surface area of the secondary conductive plate 220 compared to the primary conductive plate 210 is formed to be at least 10% wider than the first conductive plate 210, so that the contact area with the user's skin or the atmosphere is expanded. This is to increase the thermal response area.

Accordingly, the power storage circuit 300 is electrically connected to one end of the conductive ring pad and the battery to supply current to the battery.

In other words, when the semiconductor and the metal are joined, the thermoelectric effect is great. In this complex structure, more electrons move smoothly due to the temperature difference, and the generated voltage is charged to the battery auxiliary.

This is explained in more detail as follows.

Wireless earphones require a portable power source, but currently, a small battery that uses the stored energy until it is completely consumed is built into the earphone itself.

Accordingly, in the present invention, a set of semiconductor legs combined with an N-type and a P-type and a conductive ring pad made of a metal material are provided as an integral thermoelectric generator.

This thermoelectric generator is built into one side of the wireless earphone, and when worn on the ear, the first conductive plate absorbs heat, and the temperature in the atmosphere corresponding to the second conductive plate on the opposite side and the deviation cause charge transfer. Then, the current generated by the principle is formed so that it can be used as an auxiliary power source of the battery. That is, a thermoelectric generator (TEG) is used to convert heat into electrical energy.

In other words, in the present invention, as shown in FIGS. 4 to 5 , the N-type semiconductor leg 110 and the P-type semiconductor leg 120 that are thermally parallel and electrically connected are charge carriers at the atomic level when a temperature difference occurs. As it diffuses from the hot side of the

Accordingly, NS is connected in parallel to both ends of the N-type semiconductor leg 110 and the P-type semiconductor leg 120 . At this time, the thickness of the alumina substrate is 0.25 mm, and copper is used as an electrode connected to the P-type semiconductor leg.

At this time, the N-type semiconductor legs connected in series are 0.25 mm as thick as the copper electrode.

In addition, each of the N-type semiconductor leg 110 and the P-type semiconductor leg 120 has a length of 8 mm and a cross section of 1.73 mm 2 .

For reference, FIGS. 6 to 8 are temperature simulations of the TEG, and FIG. 6 is data of deviation from the temperature in the air in a state in which the user wears the ear.

That is, the temperature of the first conductive plate that touches the ear is 305.15K, respectively, and the surface temperature of the cold side is 297.65.K due to the temperature difference between the hot and low places.

In addition, FIG. 7 shows the voltage change of the thermoelectric generator of the present invention, and the two terminals show voltage profiles at high and low temperatures in different temperature gradients.

That is, at a constant temperature of 305.15K, an open circuit voltage of 22.7mV is confirmed for the TEG. The voltage generation due to this temperature change is confirmed to keep the hot side temperature constant (at 305.15K).

Then, the cold side temperature is lowered to 297.65K, and in this case, it is confirmed that 37mV is generated at a temperature difference of 7.5K.

In addition, as shown in FIGS. 8 to 9 , the parameters of the TEG show changes in the resistance of the power source and the internal resistance when the power supply to the external load coincides.

In addition, FIG. 10 is (a) temperature profile (b) related to the generated voltage, and it is confirmed that the electron flow gradually decreases through the outside because the resistance to the external load is higher.

The present invention is not limited to the specific preferred embodiments described above, and without departing from the gist of the present invention as claimed in the claims, anyone with ordinary skill in the art to which the invention pertains can implement various modifications Of course, such modifications are intended to be within the scope of the claims.

100 ... semiconductor leg set 110 ... N-type semiconductor leg
120 ... P-type semiconductor leg 200 ... Conductor ring pad
210 ... primary conduction plate 220 ... secondary conduction plate
300 ... power storage circuit

Claims (3)

a semiconductor leg set 100 including a plurality of N-type semiconductor legs 110 and P-type semiconductor legs 120; The first conductive plate 210 made of metal is in contact with both ends of the opening in the longitudinal direction of the semiconductor leg set, and the secondary conductive plate 220 made of metal is energized on the outer surface of the first conductive plate 210. a conductor ring pad 200 and; A power storage circuit 300 electrically connected to one end of the conductive ring pad and the battery to supply current to the battery; A portable thermoelectric generator for a wireless earphone battery comprising:
The semiconductor leg set 100 is such that the N-type semiconductor leg 110 and the P-type semiconductor leg 120 are cross-arranged along the circumferential direction, but the N-type semiconductor leg 110 and the P-type semiconductor leg 120 are When cross-arranging, it has a rectangular cylindrical appearance and is formed to provide a connection path when electrons are moved while being cross-arranged, and the primary conductive plate 210 of the conductor ring pad 200 is made of copper, 2 The secondary conductive plate 220 is formed of an aluminum material, but the surface area of the secondary conductive plate 220 is at least 10% wider than that of the primary conductive plate 210, so that the contact area with the user's skin or the atmosphere is expanded The secondary conductive plate 220 has a convex gradient shape on the surface that is in close contact with the skin, and the N-type semiconductor leg 110 and the P-type semiconductor leg 120 are in the form of a rectangular tubular bar. , A portable thermoelectric generator for a wireless earphone battery, characterized in that it is cross-arranged as a column structure having a width cross-sectional diameter of 0.5 mm and a length cross-sectional diameter of 5 mm.
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