CN216774946U - Intelligent sound box - Google Patents

Abstract

The utility model discloses an intelligent sound box, which comprises a sound box shell, and an electromagnetic loudspeaker, a thermoelectric conversion component and a rechargeable battery which are arranged in the sound box shell; the thermoelectric conversion component is connected with the electromagnetic loudspeaker and converts heat generated by the electromagnetic loudspeaker during working into electric energy to charge the rechargeable battery. The intelligent sound box is designed based on the thermoelectric conversion effect, and the thermoelectric conversion component is utilized to absorb heat released by the electromagnetic loudspeaker during working and convert the heat into electric energy to feed the electric energy back to the rechargeable battery for electric quantity supplement, so that the energy is recycled, and the endurance time of the intelligent sound box is prolonged. Meanwhile, most of heat released by the electromagnetic loudspeaker is absorbed by the thermoelectric conversion component and converted into electric energy, so that the heat dissipation effect of the loudspeaker is remarkably improved, the heat which needs to be dissipated by the intelligent sound box through the shell of the intelligent sound box is reduced, the overall temperature rise of the intelligent sound box is effectively controlled, and the use experience of a user is improved.

Description

Intelligent sound box

Technical Field

The utility model belongs to the technical field of audio output equipment, and particularly relates to an intelligent sound box.

Background

The smart sound box is an audio output device which can be connected with the internet through a voice instruction of a user so as to respond to the operation of the user (such as song-on-demand, online shopping or weather forecast understanding). With the advent of the 5G era, the functions of smart speakers are not limited to voice communication and music playing, and the smart speakers have become an interface of smart homes, so that users can control other household appliances through the voice interaction function of the smart speakers.

The loudspeaker is a core component in the intelligent sound box and is also a main heating device in the intelligent sound box. For a portable intelligent sound box, the speaker of the portable intelligent sound box is an electromagnetic speaker in multiple options. The electromagnetic loudspeaker is also called as a reed loudspeaker, and utilizes the electromagnetic induction principle to magnetize a reed made of soft iron material after sound source signal current passes through a voice coil, and the magnetized reed and a magnet attract or repel each other to generate driving force so as to promote vibration of a vibrating diaphragm to produce sound.

Electromagnetic loudspeakers release a large amount of heat during operation. The voice coil is a main heat source, and the temperature rise in turn causes the direct resistance of the voice coil (the direct current resistance of the transformer winding) to increase, thereby affecting the heating power. The induced current in the magnetic circuit is a secondary heat source, and when the induced current flows through a metal piece (including a T iron, a clamping plate, a short circuit ring and the like) in the loudspeaker, eddy current is generated, so that the metal piece is heated, and the secondary heat source is formed. The magnitude of the induced current is related to factors such as the frequency of the electrical signal excitation.

The electro-acoustic conversion efficiency of the electromagnetic speaker is low, and is about 3% at most, and the main energy consumption is in the aspect of heating, that is, most of the energy is released in the form of heat, so that the great waste of electric energy is caused. Because the electromagnetic loudspeaker has larger power consumption, the traditional intelligent sound box has shorter endurance time and serious heat generation, and influences the use experience of users to a certain extent.

Disclosure of Invention

The utility model aims to provide an intelligent sound box with an energy-saving effect, and the intelligent sound box is used for solving the problems of short endurance time and serious heating of the intelligent sound box in the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme:

an intelligent sound box comprises a sound box shell, wherein an electromagnetic loudspeaker, a thermoelectric conversion component and a rechargeable battery are arranged in the sound box shell; the electromagnetic loudspeaker is used for converting a sound source signal into sound; the thermoelectric conversion component is connected with the electromagnetic loudspeaker and converts heat generated by the electromagnetic loudspeaker during working into electric energy; the rechargeable battery receives the electric energy output by the thermoelectric conversion part and stores the electric energy.

In some embodiments of the present application, the thermoelectric conversion component is preferably a thermocouple, and a hot end of the thermocouple may be connected to the electromagnetic speaker, so that the thermocouple can absorb as much heat as possible released by the electromagnetic speaker; the cold ends of the thermocouples are arranged at the positions close to the sound box shell or are attached to the sound box shell, so that the heat dissipation effect of the cold ends is improved.

In some embodiments of the present application, it is preferable that a vent hole is formed in the sound box housing, and the cold end of the thermocouple is opposite to the position of the vent hole, so as to accelerate the heat dissipation speed of the cold end.

In some embodiments of the present application, the enclosure housing may include an upper shell, sidewalls, and a base; the ventilation hole is preferably arranged on the side wall of the sound box shell and close to the upper shell, so that heat released through the ventilation hole can be timely dissipated into air far away from the intelligent sound box, and the overall temperature rise of the intelligent sound box is effectively controlled.

In some embodiments of the present application, the base of the enclosure includes a horizontal bottom surface and a transition surface extending toward the side wall; in order to make the cold end of the thermocouple as far as possible from the heat source, it is preferable that the sound outlet hole is opened on the transition surface of the base, and the electromagnetic speaker is disposed at a bottom position in the cabinet housing so as to be far from the cold end of the thermocouple.

In some embodiments of the present application, the sound outlet holes are provided in plural, and preferably arranged around the circumference of the transition surface of the base, and the electromagnetic speaker is arranged at the center of the circumference formed by the sound outlet holes, so as to improve the sound outlet effect.

In some embodiments of the present application, it is preferable that the connection position of the hot end of the thermocouple and the electromagnetic speaker is disposed adjacent to or opposite to the voice coil of the electromagnetic speaker. The main heating source of the electromagnetic loudspeaker is the voice coil, the hot end of the thermocouple is connected to the position of the voice coil, so that the hot end of the thermocouple can absorb heat released by the electromagnetic loudspeaker as much as possible, the temperature difference between the hot end and the cold end of the thermocouple is increased, the larger the temperature difference is, the larger the current is generated through conversion of the thermocouple, the larger the current is, the more electric energy is supplemented for the rechargeable battery, and the longer the endurance time of the intelligent sound box is.

In some embodiments of the present application, it is preferable to add a sealed casing in the enclosure of the sound box, and to place the electromagnetic speaker in the sealed casing, so as to reduce heat dissipation from the electromagnetic speaker; the hot end of the thermocouple extends into the sealed shell to fully absorb heat, and the cold end of the thermocouple is arranged outside the sealed shell, so that the influence of the heat released by the electromagnetic loudspeaker on the temperature rise of the cold end of the thermocouple can be reduced, and the thermoelectric conversion efficiency is improved.

In some embodiments of the present application, it is preferable that the rechargeable battery is disposed outside the sealed case to effectively control the temperature rise of the rechargeable battery.

In some embodiments of the present application, in order to reliably control the charging process of the rechargeable battery, it is preferable to embed a power management chip in the enclosure of the sound box, and receive the electric energy output by the thermoelectric conversion component to control the rechargeable battery to be charged safely.

Compared with the prior art, the utility model has the advantages and positive effects that: the intelligent sound box is designed based on the thermoelectric conversion effect, the thermoelectric conversion component is additionally arranged in the intelligent sound box, the thermoelectric conversion component is used for absorbing heat released by the electromagnetic loudspeaker during working, and then the heat is converted into electric energy to be fed back to the rechargeable battery in the intelligent sound box, so that the electric energy is supplemented for the rechargeable battery, the energy is recycled, and the endurance time of the intelligent sound box is prolonged. Meanwhile, most of heat released by the electromagnetic loudspeaker is absorbed by the thermoelectric conversion component and converted into electric energy, so that the heat dissipation effect of the loudspeaker is remarkably improved, the heat which needs to be dissipated by the intelligent sound box through the shell of the intelligent sound box is reduced, the overall temperature rise of the intelligent sound box is effectively controlled, and the use experience of a user is improved.

Other features and advantages of the present invention will become more apparent from the detailed description of the embodiments of the present invention when taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic external view of an embodiment of a smart sound box according to the present invention;

FIG. 2 is a schematic longitudinal sectional view of an embodiment of the smart sound box of FIG. 1;

FIG. 3 is a cross-sectional schematic view of an embodiment of the smart sound box of FIG. 1;

fig. 4 is a perspective view of an embodiment of the smart speaker of fig. 1.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

It should be noted that in the description of the present invention, the terms "inside", "outside", "top", "bottom", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are for convenience of description only, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that in the description of the present invention, the terms "mounted," "connected," and "connected" are to be construed broadly unless otherwise specifically indicated and limited. For example, it may be a fixed connection, a detachable connection or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Thermoelectric conversion refers to the interconversion between thermal energy and electrical energy. The thermoelectric conversion effect includes a Seebeck (Seebeck) effect, a Peltier (Peltier) effect, and a Thompson (Thompson) effect. Macroscopically, the thermoelectric conversion effect means a direct conversion between thermal energy and electrical energy.

For thermoelectric materials capable of thermoelectric conversion, the ideal characteristics thereof generally need to satisfy the following requirements:

(1) lower internal resistance to reduce losses (heating) due to internal current;

(2) a lower thermal conductivity (thermal conductivity) to reduce heat conduction from the high temperature end to the low temperature end;

(3) higher thermal electromotive force (open circuit).

Most substances have a thermoelectromotive force of only a few microvolts per degree of temperature difference, and are not suitable for being used as thermoelectric materials. The most suitable thermoelectric materials are semiconductor materials such as lead telluride, silicon germanium alloys, germanium telluride, and the like. At present, the thermoelectric conversion efficiency of the thermocouple manufactured by using the semiconductor material can reach 10-20%.

In order to solve the problem of serious heating of the intelligent sound box, the thermoelectric conversion technology is applied to the structure and circuit design of the intelligent sound box, the thermoelectric conversion component is arranged in the intelligent sound box, heat released by a loudspeaker arranged in the sound box is converted into electric energy by the thermoelectric conversion component, and a rechargeable battery in the sound box is charged to make up for electric quantity loss caused by heating of the loudspeaker, so that the endurance time of the intelligent sound box can be prolonged, frequent charging of a user is avoided, and the satisfaction degree of the user is improved. Simultaneously, because the partial heat of speaker release has been converted into the electric energy, consequently, the radiating effect of speaker obviously improves, can not have too much heat again and need outwards release through the audio amplifier shell, the whole temperature rise of audio amplifier can not be too high like this, has solved the problem of generating heat of intelligent audio amplifier then.

The following describes the structure and circuit design of the improved smart speaker in detail with reference to fig. 1 to 4.

The smart speaker of this embodiment mainly includes a speaker housing 100, an electromagnetic speaker 200, a rechargeable battery 300, a main control board 400, a thermoelectric conversion unit, and the like.

In some embodiments, the speaker housing 100 is preferably designed to be cylindrical, and can be assembled by the upper shell 110, the sidewall 120 and the base 130 to form a hollow cavity, so as to enclose the electromagnetic speaker 200, the rechargeable battery 300, the main control board 400, the thermoelectric conversion component, and other mechanical or electrical components required for constructing a speaker.

In the upper casing 110 of the enclosure 100, function keys 111 may be arranged, as shown in fig. 4, including but not limited to volume +, volume-, pause, single-track loop, and other function keys, so as to facilitate user operations.

A side wall 120 of the cabinet case 100 may be provided with a vent hole 121 for heat dissipation. The plurality of ventilation holes 121 are preferably arranged in an array of rows and columns in a concentrated manner in a certain area of the side wall 120 of the sound box. As a preferred embodiment, the vent holes 121 are preferably opened at a position above the side walls 120 of the cabinet, i.e., closer to the upper case 110, as shown in fig. 1. Like this, the heat that gives off through ventilation hole 121 is with the air heating back around the intelligent audio amplifier, and the hot-air rises, keeps away from the audio amplifier rapidly, can reduce like this from the influence of heat dissipation to audio amplifier ring temperature to can improve the radiating effect of audio amplifier. In addition, function keys such as a power switch 122 may be disposed on the side wall 120 of the enclosure 100.

The base 130 of the enclosure 100 preferably includes a horizontal bottom surface 131 and a transition surface 132 extending toward the side wall 120. The transition surface 132 is preferably designed as a bevel or a curved surface, with a large upper diameter and a small lower diameter, as shown in fig. 1. A plurality of sound holes 133 may be formed in the transition surface 132. The sound outlet holes 133 are preferably designed to be arranged at equal intervals in a manner of surrounding the transition surface 132 for a circle, so that the sound output through the sound outlet holes 133 can radiate around the smart sound box in all directions, thereby meeting the listening requirements of users in different directions.

Inside the enclosure 100, the main control board 400 is preferably disposed at a position close to the function keys 111, for example, in case the function keys 111 are disposed on the upper case 110, the main control board 400 is preferably disposed at the top of the hollow cavity to facilitate layout design of the internal wiring of the enclosure. The rechargeable battery 300 is preferably disposed in the middle region of the hollow cavity, and is connected to the main control board 400 to supply power to various electronic devices on the main control board 400. The electromagnetic speaker 200 is preferably disposed at a position close to the sound outlet 133, for example, in the case that the sound outlet 133 is disposed on the transition surface 132 of the base 130, the electromagnetic speaker 200 is preferably disposed at a position at the bottom of the hollow cavity, as shown in fig. 2, so that the sound emitted through the electromagnetic speaker 200 can be directly output through the sound outlet 133, thereby reducing energy loss and ensuring output power of the sound. As a preferred embodiment, the electromagnetic type speaker 200 may be disposed at a central position of the bottom of the hollow cavity, that is, at a central position of a circumference surrounded by the sound outlet holes 133, so that sound output through the sound outlet holes 133 may be uniformly radiated in a 360 ° direction to improve a sound output effect.

Since the electromagnetic speaker 200 is a main heat source in the smart speaker, it is preferable to connect a thermoelectric conversion member to the electromagnetic speaker 200 in order to improve the thermoelectric conversion efficiency, mainly for performing thermoelectric conversion on heat emitted from the electromagnetic speaker 200, and to recover more energy while improving the heat dissipation effect.

In this embodiment, the thermoelectric conversion element is preferably a thermocouple, and includes a hot end 501 and a cold end 502, as shown in fig. 2. The hot end 501 of the thermocouple is connected to the electromagnetic loudspeaker 200 for absorbing heat released by the electromagnetic loudspeaker 200. As a preferred embodiment, considering that the main heat generating component of the electromagnetic speaker 200 is a voice coil, it is preferable to connect the hot end 501 of the thermocouple to the position of the voice coil of the electromagnetic speaker 200, or as close to the position of the voice coil as possible, in order to obtain the maximum thermoelectric conversion efficiency. The cold end 502 of the thermocouple is preferably located remotely from the electromagnetic speaker 200 to minimize the effect of heat released by the electromagnetic speaker 200 on the cold end temperature of the thermocouple.

As a preferred embodiment, the cold end 502 of the thermocouple is designed to extend toward the enclosure 100, and as shown in fig. 2 and 3, the cold end may extend to a position adjacent to the enclosure 100, or directly attach to the enclosure 100, so as to improve the heat dissipation effect.

In this embodiment, the cold end 502 of the thermocouple is preferably extended to a position where the side wall 120 of the enclosure 100 is provided with the vent 121, for example, the position is adjacent to and opposite to the vent 121, so as to increase the heat dissipation speed of the cold end 502 and increase the temperature difference between the hot end 501 and the cold end 502 of the thermocouple. Because the larger the temperature difference, the larger the current generated by the thermocouple conversion; the larger the current, the more electric energy will be supplemented to the rechargeable battery 300, which in turn makes the endurance of the smart speaker become longer.

In order to limit the conduction of the heat released from the electromagnetic speaker 200 to the cabinet 100 as much as possible to further improve the thermoelectric conversion efficiency, it is preferable in this embodiment to add a sealed case 210 inside the cabinet 100, as shown in fig. 2. The electromagnetic loudspeaker 200 is enclosed in the sealed housing 210, the hot end 501 of the thermocouple is inserted into the sealed housing 210 and connected or in contact with the electromagnetic loudspeaker 200, and the cold end 502 of the thermocouple is positioned outside the sealed housing 210 and as far away from the sealed housing 210 as possible. Thus, the hot end 501 of the thermocouple can absorb the heat released by the electromagnetic loudspeaker 200 to the maximum extent, and the cold end 502 of the thermocouple can be influenced by the heat released by the electromagnetic loudspeaker 200 to the minimum extent, so that the temperature difference between the hot end 501 and the cold end 502 of the thermocouple can be kept in an ideal state, and the current generated by the conversion of the thermocouple cannot lose the significance of charging and storing energy of the battery 300 due to too small current.

In this embodiment, it is preferable that the rechargeable battery 300 is disposed outside the sealed housing 210, as shown in fig. 2, so as to prevent the environment temperature of the rechargeable battery 300 from being too high due to heat dissipation of the electromagnetic speaker 200, which may affect normal use of the rechargeable battery 300.

In order to safely charge the rechargeable battery 300, in this embodiment, a power management chip is preferably disposed on the main control board 400 of the smart speaker, and the power management chip is used to receive the current output by the thermocouple and control the charging process of the rechargeable battery 300, so as to improve the charging stability and safety of the rechargeable battery 300.

It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.

Claims (10)

1. An intelligent sound box, comprising:

a sound box housing;

the electromagnetic loudspeaker is internally arranged in the sound box shell and is used for converting a sound source signal into sound;

the thermoelectric conversion component is arranged in the sound box shell and connected with the electromagnetic loudspeaker to convert heat generated by the electromagnetic loudspeaker during working into electric energy;

and the rechargeable battery is internally arranged in the sound box shell and is used for receiving and storing the electric energy output by the thermoelectric conversion component.

2. The smart audio amplifier of claim 1, wherein the thermoelectric conversion element is a thermocouple, a hot end of the thermoelectric conversion element is connected to the electromagnetic speaker, and a cold end of the thermoelectric conversion element is disposed adjacent to or attached to the audio amplifier housing.

3. The intelligent sound box according to claim 2, wherein a vent hole is formed in the sound box housing, and the cold end of the thermocouple is opposite to the position of the vent hole.

4. The smart sound box of claim 3,

the sound box shell comprises an upper shell, a side wall and a base;

the ventilation hole is arranged on the side wall of the sound box shell and is close to the upper shell.

5. The smart sound box according to claim 4, wherein the base of the sound box housing comprises a horizontal bottom surface and a transition surface extending toward the side wall, the transition surface is provided with a sound outlet, and the electromagnetic speaker is located at the bottom of the sound box housing.

6. The smart sound box according to claim 5, wherein the plurality of sound outlet holes are formed and circumferentially arranged around the transition surface of the base, and the electromagnetic speaker is located at a center position of a circumference formed by the sound outlet holes.

7. The smart sound box of claim 2, wherein the hot end of the thermocouple is connected to the electromagnetic speaker at a position adjacent to or opposite to a voice coil of the electromagnetic speaker.

8. The smart sound box of claim 2, wherein a sealed enclosure is disposed within the sound box enclosure, the electromagnetic speaker is disposed within the sealed enclosure, the hot end of the thermocouple extends into the sealed enclosure, and the cold end of the thermocouple is disposed outside the sealed enclosure.

9. The smart sound box of claim 8, wherein the rechargeable battery is located outside of the sealed enclosure.

10. The smart sound box of any one of claims 1 to 9, further comprising:

and the power management chip is arranged in the sound box shell and is used for receiving the electric energy output by the thermoelectric conversion component and controlling the rechargeable battery to charge.

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