WO2023113189A1 - Portable thermoelectric generator for battery of wireless earphone - Google Patents

Abstract

The present invention relates to a portable thermoelectric generator for a battery of a wireless earphone. The essential technical point of the present invention is characterized in that a semiconductor leg set including a N-type and a P-type combined therein and a conductor ring pad including a metal material are integrated to form a thermoelectric generator, and the thermoelectric generator, corresponding to a kind of a power ring, is mounted on a wireless earphone. The thermoelectric generator assists a battery to be charged with current generated during movement of electrons (movement from a position having a high temperature to a position having a low temperature) due to a difference between the temperature of a user's body (a temperature of the surface coming in contact with the ear when inserted into the ear) and the temperature of the air, thereby extending the operational time of the wireless earphone.

Description

Portable thermoelectric generator for wireless earphone battery

According to the present invention, a semiconductor leg set in combination of N-type and P-type and a conductor ring pad made of metal form an integral thermoelectric generator, and the thermoelectric generator is mounted in a wireless earphone in the form of a power ring, and the user's body temperature When electric current (voltage) is generated when electrons move (from a place with a high temperature to a place with a low temperature) due to the difference between (the temperature of the surface that touches the ear) and the temperature in the air, the generated power is used to charge the stored battery. By assisting, it relates to a portable thermoelectric generator for a wireless earphone battery, characterized in that the convenience of use is increased by enabling the use time of the wireless earphone to be extended.

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

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

That is, the charging device (charger) dedicated to wireless earphones is a type of case holder that allows the battery to be charged while storing the wireless earphones. formed to be charged.

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

For example, the time that can drive the main body using the battery of an electronic device is about 30 hours, whereas the time that can drive the main body with the battery of the Bluetooth wireless earphone is about 10 hours.

Therefore, when using 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, when they are charged in a conventional charging method, users cannot use the electronic device and the Bluetooth wireless earphone after a certain period of time.

As a result, when the energy stored in the battery is exhausted during normal or frequent use, conventional wireless earphones have to find a wired charging device (charger) and try to recharge it. In particular, it is a situation where cumbersome use continues as you have to spend time searching for a charger.

The present invention is to solve the above problems, and the technical gist of the present invention is a TEG (Thermoelectric Generator) power generation device, in which a set of N-type and P-type semiconductor legs and a conductor ring pad made of metal form an integrated thermoelectric generator. However, the thermoelectric generator is installed in a wireless earphone as a kind of power ring, and its purpose is to improve convenience of use by prolonging battery use time.

That is, the present invention causes a current (voltage) to be generated when electrons move (from a place with a high temperature to a place with a low temperature) due to a difference between the user's body temperature (the surface temperature that touches the ear) and the temperature in the air, The purpose of this is to provide that the use time of the wireless earphone can be extended (use convenience increase) by assisting the charging of the battery with the generated power.

In order to achieve this object, the present invention provides a semiconductor leg set 100 provided with a plurality of N-type semiconductor legs 110 and P-type semiconductor legs 120; The first conductive plate 210 made of metal is brought into contact with both ends of the opening in the longitudinal direction of the semiconductor leg set, and the second conductive plate 220 made of metal is applied to the outer surface of the first conductive plate 210 ( a conductor ring pad 200 that allows charge_current to move according to the difference between body temperature and air temperature; A power storage circuit 300 electrically connected to one end of the conductor ring pad and the battery to supply current to the battery; made up of

Accordingly, in the semiconductor leg set 100, the N-type semiconductor legs 110 and the P-type semiconductor legs 120 are arranged to cross each other in the circumferential direction (a P-type semiconductor leg 120 is placed between each N-type semiconductor leg 110). are inserted intermittently), but when the N-type semiconductor leg 110 and the P-type semiconductor leg 120 are cross-arranged, the appearance of any one of a cylindrical shape, a square cylinder shape, a cube shape, an elliptical shape or a polygonal shape is formed, and the cross arrangement It is formed to provide a connection passage when electrons move while doing so.

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

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

1 and 2 are detailed exemplary views showing a thermoelectric generator (TEG) according to the present invention;

3 is an example 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 the configuration of an electrical connection circuit between a thermoelectric generator (TEG) and a battery according to the present invention;

6 to 10 are exemplary diagrams illustrating electrical characteristic simulations of a thermoelectric generator (TEG) according to the present invention.

[Description of symbols according to drawings]

100 ... semiconductor leg set 110 ... N-type semiconductor leg

120 ... P-type semiconductor leg 200 ... Conductor ring pad

210 ... 1st conducting plate 220 ... 2nd conducting plate

300 ... storage circuit

The best embodiment of the present invention is a semiconductor leg set 100 provided with a plurality of N-type semiconductor legs 110 and P-type semiconductor legs 120; The first conductive plate 210 made of metal is brought into contact with both ends of the opening in the longitudinal direction of the semiconductor leg set, and the second conductive plate 220 made of metal is applied to the outer surface of the first conductive plate 210 ( a conductor ring pad 200 that allows charge_current to move according to the difference between body temperature and air temperature; A power storage circuit 300 electrically connected to one end of the conductor ring pad and the battery to supply current to the battery; made up of

Next, 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, in the semiconductor leg set 100, the N-type semiconductor legs 110 and the P-type semiconductor legs 120 are alternately arranged along the circumferential direction (a P-type semiconductor leg 120 is placed between each N-type semiconductor leg 110). 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, the electrons It is formed to provide a connection passage when moving.

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

Meanwhile, the conductor ring pad 200 allows the first conductive plate 210 made of metal to contact 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 metal material. The secondary conductive plate 220 is formed to be energized (charge_current transfer according to the difference between body temperature and ambient temperature).

At this time, the first conductive plate 210 of the conductor ring pad 200 is made of copper or an equivalent material (material), and the second conductive plate 220 is made of aluminum or an equivalent material (material). It is desirable to make it possible.

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

In addition, it is preferable to set the material of the primary conduction plate to a material that has a good touch so as not to feel repulsive to the skin.

In addition, the surface area of the secondary conductive plate 220 is larger than that of the primary conductive plate 210 by at least 10%, 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 conductor ring pad and the battery to supply current to the battery.

In other words, when a semiconductor and a metal are bonded, the thermoelectric effect is increased. In this complex structure, more electrons move smoothly due to the temperature difference, and the generated voltage supplementally charges the battery.

A more detailed description of this is as follows.

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

Accordingly, in the present invention, a thermoelectric generator is provided with a combination of N-type and P-type semiconductor leg sets and a metal conductor ring pad.

Such a 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 air corresponding to the second conductive plate on the opposite side and its deviation cause charge transfer. If so, the current generated by the principle is formed so that it can be used as an auxiliary power source for the battery. That is, a thermoelectric generator (TEG) is used to convert heat into electrical energy.

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

Accordingly, NSs are 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 equal to the thickness of the copper electrode.

Further, it is preferable that 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 mm2.

For reference, FIGS. 6 to 8 are temperature simulations of the TEG, and FIG. 6 is deviation data from the temperature in the air when the TEG is worn on the user's ear.

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

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

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

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

In addition, as shown in FIGS. 8 and 9 , the TEG parameter shows a change in resistance and internal resistance of the power source when the power supply to the external load is consistent.

In addition, FIG. 10 relates to (a) the temperature profile (b) 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 various modifications can be made by anyone skilled in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes are within the scope of the claims.

The present invention is a TEG (Thermoelectric Generator) power generation device, in which a set of N-type and P-type semiconductor legs and a conductor ring pad made of metal form an integral thermoelectric generator, but the thermoelectric generator is a type of power ring and is a wireless earphone To be mounted on the bar, which promotes the extension of the battery use time and improves the convenience of use, which is industrially usable.

Claims (3)

1. a semiconductor leg set 100 provided with a plurality of N-type semiconductor legs 110 and P-type semiconductor legs 120;

   The first conductive plate 210 made of metal is brought into contact with both ends of the opening in the longitudinal direction of the semiconductor leg set, and the second conductive plate 220 made of metal is applied to the outer surface of the first conductive plate 210 ( a conductor ring pad 200 that allows charge_current to move according to the difference between body temperature and air temperature;

   A power storage circuit 300 electrically connected to one end of the conductor ring pad and the battery to supply current to the battery;

   A portable thermoelectric generator for a wireless earphone battery, characterized in that configured.
2. The method of claim 1, wherein the set of semiconductor legs (100)

   The N-type semiconductor legs 110 and the P-type semiconductor legs 120 are arranged to cross each other along the circumferential direction (the P-type semiconductor legs 120 are interposed between the N-type semiconductor legs 110). When the cross-arrangement of the P-type semiconductor leg 110 and the P-type semiconductor leg 120 forms an appearance of any one of a cylindrical shape, a square cylinder shape, a cube shape, an elliptical shape, or a polygonal shape, and cross-arranged, a connection passage is formed during electron movement. A portable thermoelectric generator for a wireless earphone battery, characterized in that to provide.
3. The method of claim 1, wherein the first conductive plate 210 of the conductor ring pad 200 is made of copper or an equivalent material (material), and the second conductive plate 220 is made of aluminum or an equivalent material (material) material), but the surface area of the secondary conductive plate 220 is at least 10% larger than that of the primary conductive plate 210, so that the contact area with the user's skin or the atmosphere is expanded. Portable thermoelectric generator for earphone batteries.

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