CN207543168U - Multifunctional mobile phone support - Google Patents

Abstract

The utility model discloses a multifunctional mobile phone support, include: the mobile phone comprises a shell, a first heat dissipation hole and a second heat dissipation hole, wherein the top surface of the shell is provided with a placing groove for containing a mobile phone, and the side surface of the shell is provided with the first heat dissipation hole for heat supply discharge; the supporting part is rotatably connected to the shell and used for adjusting the angle between the shell and a supporting surface for supporting the shell; the first cold guide sheet is arranged on the bottom surface of the placing groove; the first semiconductor refrigerator is installed in the shell and comprises a first refrigerating sheet, the cold end of the first refrigerating sheet is attached to the first cold guide sheet, and the hot end of the first refrigerating sheet is connected with a first radiating fin aligned with the first radiating hole. When the multifunctional mobile phone support is used, the multifunctional mobile phone support can effectively support a mobile phone and can cool the mobile phone, so that a mobile phone battery is protected. In addition, the multifunctional mobile phone support can also be used for charging different types of batteries.

Description

A multi-functional mobile phone holder

technical field

The utility model relates to the field of mobile phone peripheral equipment, in particular to a mobile phone bracket, more specifically, to a multifunctional mobile phone bracket.

Background technique

In daily life, the mobile phone bracket has become an indispensable tool for mobile phones. When watching videos with mobile phones, long-term hand lifting can easily cause hand fatigue. The mobile phone bracket solves this problem very well and greatly facilitates our life. . When we use a mobile phone to watch videos, the mobile phone generates serious heat, and long-term use is likely to cause the reduction of the battery life of the mobile phone. The mobile phone holder in the prior art simply supports the mobile phone, cannot cool the mobile phone, and has a single function.

Therefore, be necessary to design a kind of new multifunctional mobile phone holder, to overcome the above problems.

Utility model content

The technical problem to be solved by the utility model is, aiming at the problem that the mobile phone bracket in the prior art simply supports the mobile phone, cannot cool down the mobile phone, and has a single function, to provide a mobile phone that can effectively support the mobile phone when in use, and can also A multifunctional mobile phone holder that cools down the mobile phone and protects the battery of the mobile phone.

The technical scheme that the utility model solves its technical problem adopts is:

Provide a multifunctional mobile phone holder, including:

A housing, the top surface of the housing is provided with a placement slot for accommodating the mobile phone, and the side of the housing is provided with a first cooling hole for heat supply and discharge;

a support part, rotatably connected to the housing, for adjusting the angle between the housing and the supporting surface supporting the housing;

The first cold guide plate is installed on the bottom surface of the placement groove;

The first semiconductor refrigerator is installed in the shell, the first semiconductor refrigerator includes a first cooling sheet, the cold end of the first cooling sheet is attached to the first cooling guide sheet, and the first cooling sheet The hot end of the cooling fin is connected with a first cooling fin aligned with the first cooling hole.

In the multi-functional mobile phone holder provided by the utility model, the bottom surface of the shell is provided with a first air guide hole, and the first semiconductor refrigerator also includes a first inner shell and a first blower fan, and the first inner shell The side of the first inner shell is provided with a first air outlet aligned with the first heat dissipation hole, the bottom surface of the first inner shell is provided with a first air inlet aligned with the first air guide hole, and the first heat sink Built in the first inner shell and aligned with the first air outlet, the first blower fan is built in the first inner shell and aligned with the first air inlet.

In the multifunctional mobile phone holder provided by the utility model, the support part includes two bar-shaped poles that are respectively rotatably connected to opposite sides of the housing.

In the multifunctional mobile phone holder provided by the utility model, the top surface of the housing is also provided with a first charging slot for charging a 9V battery.

In the multifunctional mobile phone holder provided by the utility model, the top surface of the housing is also provided with a second charging slot for charging a 1.2V battery or a 3.7V battery.

In the multifunctional mobile phone holder provided by the utility model, the top surface of the housing is also provided with a third charging slot for charging the 12V battery.

In the multifunctional mobile phone holder provided by the utility model, the top surface of the housing is also provided with a display screen for displaying the charging progress of the battery in the first charging tank, the second charging tank and the third charging tank .

In the multifunctional mobile phone holder provided by the utility model, the side of the housing is also provided with a power interface for connecting to an external power supply, and the housing is also provided with a power interface connected to the first charging slot, the The circuit boards of the second charging tank and the third charging tank, the circuit board is provided with a circuit board for when a corroded battery is placed in the first charging tank, the second charging tank or the third charging tank An alarm circuit that issues an alarm signal.

In the multifunctional mobile phone bracket provided by the utility model, it also includes a second cooling guide sheet and a second semiconductor refrigerator; the side of the shell is also provided with a second cooling hole for heat supply and discharge; the second cooling guide The sheet includes a connected first part, a second part and a third part, the first part is arranged on the bottom surface of the first charging slot, the second part is arranged on the bottom surface of the second charging slot, and the The third part is arranged on the bottom surface of the third charging slot; the second semiconductor refrigerator includes a second refrigerating sheet, the cold end of the second refrigerating sheet is attached to the first part, and the second refrigerating sheet The hot end of the hot end is connected with a second cooling fin aligned with the second cooling hole.

In the multifunctional mobile phone bracket provided by the utility model, the bottom surface of the outer shell is provided with a second air guide hole, and the second semiconductor refrigerator also includes a second inner shell and a second blower fan, and the second inner shell The side of the second inner shell is provided with a second air outlet aligned with the second cooling hole, the bottom surface of the second inner shell is provided with a second air inlet aligned with the second air guide hole, and the second heat sink Built in the second inner shell and aligned with the second air outlet, the second blower fan is built in the second inner shell and aligned with the second air inlet.

Implementing the multifunctional mobile phone holder provided by the utility model can achieve the following beneficial effects: the multifunctional mobile phone holder includes: a casing, the top surface of the casing is provided with a placement groove for accommodating the mobile phone, and the side of the casing is provided with a The first heat dissipation hole for heat supply discharge; the support part is rotatably connected to the casing, and is used to adjust the angle between the casing and the supporting surface supporting the casing; the first cooling plate is installed in the placement groove The bottom surface of the bottom surface; the first semiconductor refrigerator is installed in the shell, the first semiconductor refrigerator includes a first cooling sheet, and the cold end of the first cooling sheet is attached to the first cooling guide sheet, so The hot end of the first refrigerating sheet is connected with a first cooling sheet aligned with the first cooling hole. When a smart phone is placed in the placement slot, the first cold guide sheet will be attached to the smart phone, because the first cold guide sheet is also attached to the cold end of the first cooling sheet at the same time. In this way, the first refrigerating sheet can cool down the smart phone through the first cooling sheet, so that the multi-functional mobile phone holder can help the user to read the smart phone while giving the smart phone The mobile phone is cooled to prevent the smartphone from overheating due to prolonged use.

Description of drawings

Fig. 1 is the top front view of the first embodiment of the utility model;

Fig. 2 is the left front view of the first embodiment of the utility model;

Fig. 3 is the rear front view of the first embodiment of the utility model;

Fig. 4 is the right front view of the first embodiment of the utility model;

Fig. 5 is a bottom front view of the first embodiment of the utility model;

Fig. 6 is the front elevation view of the first embodiment of the utility model;

Fig. 7 is a bottom front view of the first semiconductor refrigerator in the first embodiment of the present invention;

Fig. 8 is a top front view of the first semiconductor refrigerator in the first embodiment of the present invention;

Fig. 9 is a rear front view of the first semiconductor refrigerator in the first embodiment of the present invention;

Fig. 10 is a right front view of the upper case in the first embodiment of the present invention;

Fig. 11 is a schematic structural diagram of a strip-shaped strut in the first embodiment of the present invention;

Fig. 12 is another schematic view of the structure of the bar-shaped strut in the first embodiment of the present invention;

Fig. 13 is a schematic diagram of the state when the bar-shaped strut rotates 45 degrees in the first embodiment of the present invention;

Fig. 14 is a schematic diagram of the state when the bar-shaped strut rotates 90 degrees in the first embodiment of the present invention;

Fig. 15 is a top front view of the second embodiment of the utility model;

Fig. 16 is a left front view of the second embodiment of the utility model;

Fig. 17 is the rear front view of the second embodiment of the utility model;

Fig. 18 is the right front view of the second embodiment of the utility model;

Fig. 19 is a front front view of the second embodiment of the utility model;

Fig. 20 is a bottom front view of the second embodiment of the utility model;

Fig. 21 is a bottom front view of the second semiconductor refrigerator in the second embodiment of the present invention;

Fig. 22 is a top front view of the second semiconductor refrigerator in the second embodiment of the present invention;

Fig. 23 is a rear front view of the second semiconductor refrigerator in the second embodiment of the present invention;

Fig. 24 is a schematic structural view of the second cooling guide plate in the second embodiment of the present invention.

Description of the accompanying drawings for specific embodiments:

Detailed ways

In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation of the utility model is described in detail with reference to the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Embodiment one

As shown in Figures 1 to 14, it is the first embodiment of the multifunctional mobile phone holder provided by the utility model. device 4. The top surface of the housing 1 is provided with a placement slot 111 for accommodating a smart phone, and the side of the housing 1 is provided with a first cooling hole 113 for heat dissipation. The support part 2 is rotatably connected to the housing 1 and can be used to adjust the angle between the housing 1 and the supporting surface supporting the housing 1 . The first cooling plate 3 is installed on the bottom surface of the placement groove 111 . The first semiconductor refrigerator 4 is installed in the housing 1, and the first semiconductor refrigerator 4 includes a first cooling sheet 42, and the cold end of the first cooling sheet 42 is attached to the first cooling guide. The hot end of the first cooling fin 42 is connected with the first cooling fin 43 aligned with the first cooling hole 113 . When a smart phone is placed in the placement groove 111, the first cold guide sheet 3 will be bonded to the smart phone, because the first cold guide sheet 3 is also in contact with the first cooling sheet 42 at the same time. In this way, the first cooling plate 42 can cool down the smart phone through the first cooling plate 3, so that the multi-functional mobile phone holder assists the user to read the smart phone While cooling down the smart phone, to prevent the smart phone from overheating due to prolonged use.

Specifically, the housing 1 is formed by fastening an upper housing 11 and a lower housing 12, the upper housing 11 is a box-shaped structure with an open bottom, and the lower housing 12 is a flat plate-shaped structure. The top surface of the upper shell 11 is provided with the placement groove 111, the placement groove 111 is a through groove structure, the placement groove 111 includes a left groove wall 1111 and a right groove wall 1112 which are opposite to each other and parallel to each other. It includes a bottom groove wall connecting the left groove wall 1111 and the right groove wall 1112 . The middle part of the bottom tank wall is provided with an installation hole for the user to place the first cooling plate 3, and the part of the left tank wall 1111 located on the front side of the installation hole is provided with a left bar 1113 protruding to the right , the right groove wall 1112 protrudes a right bar 1114 to the left at a position corresponding to the left bar 1113 . Moreover, there is a certain distance between the left bar 1113 and the right bar 1114 . In this way, it is convenient for the user to place smartphones of different sizes in the placement slot 111 without affecting the connection of other devices (such as wired earphones, charging treasures, etc.) to the front or back of the smartphone. The back of the upper case 11 is provided with the first heat dissipation holes 113, and the first heat dissipation holes 113 include a plurality of rectangular through holes equally spaced front and rear through the back of the upper case 11, so as to ensure that the The heat inside and outside the casing 1 can be exchanged smoothly and the appearance of the casing 1 can be guaranteed. In addition, the side of the upper shell 11 is also provided with a power interface 119 connected to the first semiconductor refrigerator 4, a power switch and a power indicator light, and the power switch is used to control the power of the first semiconductor refrigerator 4. Start and stop, when the first semiconductor refrigerator 4 is started, the power indicator light is on, and when the first semiconductor refrigerator 4 stops working, the power indicator light is off.

Specifically, the support part 2 includes two bar-shaped struts 21 . The left side and the right side of the upper shell 11 are all provided with a mounting groove 112 for mounting the bar-shaped strut 21, each of the mounting grooves 112 is provided with a circular shaft hole 1121 and three circular shaft holes. The positioning hole 1122. The sizes of the three positioning holes 1122 are the same and smaller than the size of the shaft hole 1121 , and the centers of the three positioning holes 1122 are on the same circle centered on the shaft hole 1121 . Each of the bar-shaped poles 21 includes a main body, a rotating shaft 211 protruding from one side of the main body and a positioning post 212, the size of the rotating shaft 211 matches the shaft hole 1121, and the positioning post 212 The size matches the size of the positioning hole 1122 . The rotating shaft 211 is inserted into the shaft hole 1121 and elastically connected to the upper shell 11 through a torsion spring. When the bar-shaped pole 21 is received in the installation groove 112 , the positioning post 212 enters into a corresponding one of the positioning holes 1122 . When the bar 21 rotates 45 degrees, the positioning post 212 enters into the corresponding other positioning hole 1122 . When the bar 21 rotates 90 degrees, the positioning post 212 enters into the corresponding third positioning hole 1122 . In this way, the support part 2 can support the upper case 11 at different angles, so that the user can adjust the angle of viewing and reading the smart phone placed in the placement slot 111 .

Specifically, the first cold guide sheet 3 is made of a material with good thermal conductivity, for example, a metal material. The structural size of the first cooling plate 3 matches the installation hole, it is set in the installation hole, and fills up the installation hole.

Further, the lower shell 12 is also provided with a first air guide hole 121, and the first semiconductor refrigerator 4 also includes a first inner shell 41 and a first blower fan 44, and the first inner shell 41 The side is provided with a first air outlet 411 aligned with the first cooling hole 113, and the bottom surface of the first inner shell 41 is provided with a first air inlet 412 aligned with the first air guide hole 121. The first cooling fin 43 is built in the first inner shell 41 and aligned with the first air outlet 411, and the first blower fan 44 is built in the first inner shell 41 and aligned with the first air outlet. Air inlet 412. In this way, the heat of the hot end of the first refrigerating plate 42 can be quickly discharged to the outside of the casing 1 , thereby improving the cooling effect of the multifunctional mobile phone holder on the smart phone placed in the placement slot 111 .

Specifically, the first air guiding holes 121 include a plurality of through holes of different shapes spaced apart from each other and penetrating the lower shell 12 up and down. The first air exhaust port 411 is provided on the rear side of the first inner shell 41, and the first air exhaust port 411 includes a plurality of rectangular openings spaced from each other and passing through the rear side of the first inner shell 41. The first air inlet 412 is a circular through hole penetrating through the bottom surface of the first inner shell 41 up and down.

Specifically, the first cooling plate 42 is fixed on the top surface of the first inner shell 41 through a first connecting frame 45, and the cold end of the first cooling plate 42 is exposed to the top surface of the first inner shell 41. The top surface is so as to be closely attached to the first cold-conducting sheet 3 . In addition, EVA insulation material 46 is filled between the first connecting frame 45 and the first cooling sheet 42 to prevent heat exchange between the first connecting frame 45 and the first cooling sheet 42 , In this way, the cooling effect of the multifunctional mobile phone holder on the smart phone placed in the placement groove 111 is ensured.

Compared with the prior art, implementing the multifunctional mobile phone holder provided by this embodiment has the following beneficial effects:

1. When a smart phone is placed in the placement slot 111, the first cooling guide sheet 3 will be bonded to the smart phone, since the first cooling guide sheet 3 is also in contact with the first cooling The cold end of the sheet 42 is attached, so that the first refrigerating sheet 42 can cool down the smart phone through the first cooling sheet 3, so that the multifunctional mobile phone holder assists the user to read the smart phone. Cool down the smart phone while using the mobile phone, so as to prevent the smart phone from overheating due to prolonged use.

2. The lower shell 12 is also provided with a first air guide hole 121, and the first semiconductor refrigerator 4 also includes a first inner shell 41 and a first blower fan 44, and the side surface of the first inner shell 41 There is a first air outlet 411 aligned with the first heat dissipation hole 113, a first air inlet 412 aligned with the first air guide hole 121 is arranged on the bottom surface of the first inner shell 41, and the first A cooling fin 43 is built in the first inner shell 41 and aligned with the first air outlet 411, and the first blower fan 44 is built in the first inner shell 41 and aligned with the first air inlet. Tuyere 412. In this way, the heat of the hot end of the first refrigerating plate 42 can be quickly discharged to the outside of the casing 1 , thereby improving the cooling effect of the multifunctional mobile phone holder on the smart phone placed in the placement slot 111 .

3. The first refrigerating plate 42 is fixed on the top surface of the first inner shell 41 through a first connecting frame 45 , and the cold end of the first refrigerating plate 42 is exposed on the top of the first inner shell 41 surface so as to be in close contact with the first cold-conducting sheet 3 . In addition, EVA insulation material 46 is filled between the first connecting frame 45 and the first cooling sheet 42 to prevent heat exchange between the first connecting frame 45 and the first cooling sheet 42 , In this way, the cooling effect of the multifunctional mobile phone holder on the smart phone placed in the placement groove 111 is ensured.

Embodiment two

As shown in Figures 15 to 23, the second embodiment of the multi-functional mobile phone holder provided by the present invention differs from Embodiment 1 in that: the top surface of the upper case 11 is also provided with a A first charging slot 115 for charging a 9V battery, two second charging slots 116 for charging two 1.2V batteries or a 3.7V battery, and a third charging slot 117 for charging a 12V battery. The top surface of the upper shell 11 is also provided with a display screen 118 for displaying the charging progress of the batteries in the first charging slot 115 , the second charging slot 116 and the third charging slot 117 . The side of the upper shell 11 is also provided with a power interface 119 for connecting to an external power supply, and the housing 1 is also provided with a power interface 119, the display screen 118, the first charging slot 115, the The circuit boards of the second charging slot 116 and the third charging slot 117 are provided on the circuit board for use as the first charging slot 115, the second charging slot 116 or the third charging slot 117. An alarm circuit that sends out an alarm signal when a corroded battery is placed in the battery.

Specifically, the circuit board uses four operational amplifiers of LM324 as comparators, uses TL431 to set the voltage reference, and uses S8550 as a regulator tube to step down the input voltage and charge the battery.

Specifically, the first thing to explain is that the internal impedance of the battery, also known as internal resistance, is a key indicator that affects battery performance. It is a consensus in the industry to test the internal resistance of the battery to judge the power supply capacity of the battery. Factors that affect the internal resistance of a battery are battery size, operating time, structure, condition, temperature, and state of charge. For a fully charged battery, when the battery is discharged, its internal resistance gradually increases slowly. A sinusoidal signal is generated according to the signal source, which is amplified and then isolated and output to the battery to form a loop current I. After collecting and processing the voltage drop U generated by the internal resistance of the battery, the internal resistance of the battery is calculated according to Rg=U/I, and then through the alarm circuit. Beep and light alarm for bad batteries. For the circuit diagram of the alarm circuit, please refer to the description of the buzzer in "Introduction to Single-chip Microcomputer C Language Tutorial" written by Guo Tianxiang.

It can be known from the above that the multifunctional mobile phone holder can also be used for charging different types of batteries, and can also display the charging progress of the batteries in real time. In addition, it can also alarm the corroded battery and remind the user to replace the battery.

Further, the multi-functional mobile phone holder also includes a second cooling plate 5 and a second semiconductor cooler 6; the side of the housing 1 is also provided with a second cooling hole 114 for heat supply and discharge; see FIG. 24, The second cooling plate 5 includes a first part 51, two second parts 52 and a third part 53 connected, the first part is arranged on the bottom surface of the first charging slot 115, and the two parts The second part 52 is respectively arranged on the bottom surface of the two second charging slots 116, and the third part 53 is arranged on the bottom surface of the third charging slot 117; the second semiconductor refrigerator 6 includes a second cooling The cold end of the second cooling fin 62 is attached to the first part 51 , and the hot end of the second cooling fin 62 is connected with the second cooling fin 63 aligned with the second cooling hole 114 .

When a 9V battery is placed in the first charging slot 115 for charging, the first part 51 of the second cooling plate 5 will be attached to the 9V battery, because the second cooling plate 5 The first part 51 abuts against the cold end of the second refrigerating sheet 62 at the same time, so that the second refrigerating sheet 62 can cool down the 9V battery through the second cooling sheet 5, thus, the The multifunctional mobile phone holder can simultaneously cool down the 9V battery when charging the 9V battery, so as to prevent the 9V battery from overheating due to long-time charging. Similarly, when the multifunctional mobile phone holder is charging the 1.2V battery or the 3.7V battery, it can also cool down the 1.2V battery or the 3.7V battery at the same time, so as to prevent the 1.2V battery or the 3.7V from The V battery is overheated due to prolonged charging. In addition, the multifunctional mobile phone holder can also cool down the 12V battery when charging the 12V battery, so as to prevent the 12V battery from overheating due to long-time charging.

Further, the lower shell 12 is provided with a second air guide hole 122, and the second semiconductor refrigerator 6 also includes a second inner shell 61 and a second blower fan 64, and the side surface of the second inner shell 61 There is a second air outlet 611 aligned with the second heat dissipation hole 114, and a second air inlet 612 aligned with the second air guide hole 122 is arranged on the bottom surface of the second inner shell 61. Two cooling fins 63 are built in the second inner shell 61 and aligned with the second air outlet 611, and the second blower fan 64 is built in the second inner shell 61 and aligned with the second air inlet. Tuyere 612. In this way, the heat of the hot end of the second refrigerating plate 62 can be quickly discharged to the outside of the casing 1, thereby improving the stability of the multi-functional mobile phone holder in the first charging slot 115 and the second charging slot 116. Or the cooling effect of the battery charged in the second charging tank 116 .

Specifically, the second air guiding hole 122 includes a plurality of through holes of different shapes spaced apart from each other and penetrating the lower shell 12 up and down. The second air exhaust port 611 is provided on the rear side of the second inner shell 61 , and the second air exhaust port 611 includes a plurality of rectangular passages spaced from each other and passing through the rear side of the second inner shell 61 . The second air inlet 612 is a circular through hole penetrating the bottom surface of the second inner shell 61 up and down.

Specifically, the second refrigerating plate 62 is fixed on the top surface of the second inner shell 61 through a second connecting frame 65 , and the cold end of the second refrigerating plate 62 is exposed to the side of the second inner shell 61 . The top surface is so as to be closely attached to the second cold-conducting sheet 5 . In addition, EVA insulation material 66 is filled between the second connecting frame 65 and the second cooling sheet 62 to prevent heat exchange between the second connecting frame 65 and the second cooling sheet 62 , In this way, the cooling effect of the multifunctional mobile phone holder on the first charging slot 115 , the second charging slot 116 or the battery charged in the second charging slot 116 is ensured.

Compared with Embodiment 1, implementing the multifunctional mobile phone holder provided by the utility model has the following beneficial effects:

1. The multifunctional mobile phone stand provided by this embodiment can also be used to charge different types of batteries, and can also display the charging progress of the batteries in real time. In addition, it can also alarm the corroded battery and remind the user to replace the battery.

2. The multifunctional mobile phone holder provided in this embodiment can also cool down the temperature of the battery charged in the first charging slot 115 , the second charging slot 116 or the second charging slot 116 .

Embodiments of the present utility model have been described above in conjunction with the accompanying drawings, but the present utility model is not limited to the above-mentioned specific implementation, and the above-mentioned specific implementation is only illustrative, rather than restrictive. Under the enlightenment of the utility model, personnel can also make many forms without departing from the scope of protection of the purpose of the utility model and claims, and these all belong to the protection of the utility model.

Claims (10)

1. A multifunctional mobile phone holder, characterized in that, comprising: A housing, the top surface of the housing is provided with a placement slot for accommodating the mobile phone, and the side of the housing is provided with a first cooling hole for heat supply and discharge; a support part, rotatably connected to the housing, for adjusting the angle between the housing and the supporting surface supporting the housing; The first cold guide plate is installed on the bottom surface of the placement groove; The first semiconductor refrigerator is installed in the shell, the first semiconductor refrigerator includes a first cooling sheet, the cold end of the first cooling sheet is attached to the first cooling guide sheet, and the first cooling sheet The hot end of the cooling fin is connected with a first cooling fin aligned with the first cooling hole. 2. The multifunctional mobile phone holder according to claim 1, wherein the bottom surface of the shell is provided with a first air guide hole, and the first semiconductor refrigerator also includes a first inner shell and a first blower fan , the side of the first inner shell is provided with a first air outlet aligned with the first cooling hole, and the bottom surface of the first inner shell is provided with a first air inlet aligned with the first air guide hole , the first cooling fin is built in the first inner shell and aligned with the first air outlet, the first blower fan is built in the first inner shell and aligned with the first air inlet . 3 . The multifunctional mobile phone holder according to claim 1 , wherein the supporting part comprises two bar-shaped poles respectively rotatably connected to two opposite sides of the housing. 4 . 4. The multifunctional mobile phone holder according to claim 1, wherein a first charging slot for charging a 9V battery is also provided on the top surface of the housing. 5. The multifunctional mobile phone stand according to claim 4, wherein a second charging slot for charging a 1.2V battery or a 3.7V battery is provided on the top surface of the housing. 6. The multifunctional mobile phone stand according to claim 5, wherein a third charging slot for charging a 12V battery is provided on the top surface of the housing. 7. The multi-functional mobile phone holder according to claim 6, wherein the top surface of the housing is also provided with a display for displaying the first charging slot, the second charging slot and the third charging slot. Display of the charging progress of the battery. 8. The multifunctional mobile phone holder according to claim 7, wherein the side of the housing is also provided with a power interface for accessing an external power supply, and the housing is also provided with a connection to the power interface, the The circuit boards of the first charging slot, the second charging slot and the third charging slot, the circuit board is provided with a An alarm circuit that sends out an alarm signal when a corroded battery is placed in the slot. 9. The multifunctional mobile phone holder according to claim 6, further comprising a second cooling plate and a second semiconductor refrigerator; the side of the housing is also provided with a second cooling hole for heat supply and discharge ; The second cold guide sheet includes a first part, a second part and a third part connected, the first part is set on the bottom surface of the first charging tank, and the second part is set on the second The bottom surface of the charging slot, the third part is arranged on the bottom surface of the third charging slot; the second semiconductor refrigerator includes a second cooling sheet, and the cold end of the second cooling sheet is attached to the first part , the hot end of the second cooling fin is connected with a second cooling fin aligned with the second cooling hole. 10. The multifunctional mobile phone holder according to claim 9, wherein the bottom surface of the outer shell is provided with a second air guide hole, and the second semiconductor refrigerator also includes a second inner shell and a second blower fan , the side of the second inner shell is provided with a second air outlet aligned with the second heat dissipation hole, and the bottom surface of the second inner shell is provided with a second air inlet aligned with the second air guide hole , the second cooling fin is built in the second inner shell and aligned with the second air outlet, the second blower fan is built in the second inner shell and aligned with the second air inlet .