Charging device

Abstract

The utility model provides charging equipment. The charging equipment comprises a heat dissipation mechanism; the sound collection mechanism is used for collecting environment noise of a charging environment and generating a first electric signal, and the environment noise comprises external noise and / or noise generated by the heat dissipation mechanism; the control mechanism is connected with the heat dissipation mechanism and the sound collection mechanism and used for controlling the heat dissipation mechanism to conduct heat dissipation on charged equipment which charges the charging equipment based on the first electric signal, and the heat dissipation power of the heat dissipation mechanism is in positive correlation with the magnitude of the external noise. In this way, the charging efficiency can be improved while the environmental noise of the charging environment is not increased, or the reliability of the charging equipment is improved while the environmental noise of the charging environment is reduced.

Description

Technical Field

[0001] This application relates to the field of electronic technology, specifically to a charging device. Background Technology

[0002] When using a charging device to charge a device, it is necessary to dissipate heat from the device to improve its charging efficiency and reliability. However, this usually increases the ambient noise of the charging environment. Therefore, current charging devices cannot improve charging efficiency or reliability at the same time as achieving heat dissipation. Utility Model Content

[0003] In view of the above problems, this application provides a charging device that improves charging efficiency without increasing or significantly increasing the ambient noise of the charging environment, or improves the reliability of the charging device while reducing the ambient noise of the charging environment.

[0004] To solve the above-mentioned technical problems, the technical solution adopted in this application is conceived as follows:

[0005] This application provides a charging device, which includes: a heat dissipation mechanism; a sound acquisition mechanism for acquiring ambient noise in the charging environment and generating a first electrical signal, wherein the ambient noise includes external noise and / or noise generated by the heat dissipation mechanism; and a control mechanism connected to the heat dissipation mechanism and the sound acquisition mechanism respectively, for controlling the heat dissipation mechanism to dissipate heat from the device being charged by the charging device based on the first electrical signal, wherein the heat dissipation power of the heat dissipation mechanism is positively correlated with the magnitude of the external noise.

[0006] In some embodiments, the heat dissipation mechanism includes: a fan, wherein the noise generated by the heat dissipation mechanism includes fan noise generated by the fan; the control mechanism is also connected to the fan and is used to adjust the speed of the fan based on the first electrical signal; and a cooling mechanism connected to the control mechanism, wherein the control mechanism is also used to adjust the cooling capacity of the cooling mechanism based on the first electrical signal or the speed of the fan; wherein the speed of the fan is positively correlated with the magnitude of the external noise, and the cooling capacity is positively correlated with the speed of the fan.

[0007] In some embodiments, the control mechanism includes: a switching circuit connected to the sound acquisition mechanism, used to convert the first electrical signal into a square wave signal; a main control circuit connected to the switching circuit, used to generate a second electrical signal based on the square wave signal and a preset noise level; a fan control circuit connected to the main control circuit and the fan respectively, used to adjust the speed of the fan based on the second electrical signal; and a cooling control circuit connected to the main control circuit and the cooling mechanism respectively, used to adjust the cooling capacity of the cooling mechanism based on the second electrical signal or the speed of the fan.

[0008] In some embodiments, the charging device further includes: a temperature acquisition mechanism connected to the control mechanism, for acquiring the temperature of the charging environment; the control mechanism is used to adjust the cooling capacity of the cooling mechanism and the rotation speed of the fan based on the first electrical signal and the temperature; wherein the cooling capacity and the rotation speed are positively correlated with the temperature.

[0009] In some embodiments, the sound acquisition mechanism includes: a first microphone connected to the control mechanism, used to acquire the ambient noise and generate the first electrical signal; wherein, when the ambient noise decreases as the fan speed decreases, the fan continues to be in a deceleration state and the refrigeration mechanism is in a cooling capacity reduction state; when the ambient noise does not decrease as the fan speed decreases, the fan is in a speed-increasing state until it reaches a preset upper limit of the speed, and the refrigeration mechanism is controlled to be in a cooling capacity increase state until the increase reaches a preset upper limit of the cooling capacity.

[0010] In some embodiments, the sound acquisition mechanism includes: a second microphone connected to the control mechanism for acquiring the external noise; and a third microphone connected to the control mechanism for acquiring the noise generated by the heat dissipation mechanism.

[0011] In some embodiments, the control mechanism further includes a first filtering circuit, which is connected to the sound acquisition mechanism and the switching circuit respectively, for performing DC blocking filtering on the first electrical signal.

[0012] In some embodiments, the control mechanism further includes a second filtering circuit connected to the switching circuit and the sound acquisition mechanism, used to filter the power supply voltage provided to the switching circuit and the sound acquisition mechanism.

[0013] In some embodiments, the switching circuit includes an NPN transistor, a first resistor, and a second resistor; the first filter circuit includes a first capacitor; the second filter circuit includes a second capacitor; and the control mechanism further includes a third resistor. One end of the second capacitor, one end of the first resistor, one end of the second resistor, and one end of the third resistor are connected to the power supply voltage; the other end of the second capacitor is grounded. One end of the first capacitor is connected to the other end of the third resistor and the sound acquisition mechanism, and the other end of the first capacitor is connected to the other end of the second resistor and the base of the NPN transistor. The emitter of the NPN transistor is grounded, and the collector of the NPN transistor is connected to the other end of the first resistor and the main control circuit.

[0014] In some embodiments, the first microphone is located at the air outlet or air inlet of the fan.

[0015] In some embodiments, the sound acquisition mechanism includes a microphone; the cooling mechanism includes a semiconductor cooler.

[0016] The advantages of the embodiments of this application, which differ from the prior art, are as follows: The charging device proposed in this application includes a heat dissipation mechanism, a sound acquisition mechanism, and a control mechanism; the sound acquisition mechanism is used to collect the ambient noise of the charging environment and generate a first electrical signal, wherein the ambient noise includes external noise and / or noise generated by the heat dissipation mechanism; the control mechanism is connected to the heat dissipation mechanism and the sound acquisition mechanism respectively, and is used to control the heat dissipation mechanism to dissipate heat from the device being charged by the charging device based on the first electrical signal, wherein the heat dissipation power of the heat dissipation mechanism is positively correlated with the magnitude of the external noise. For example, when external noise is high, the control mechanism can increase the heat dissipation power of the cooling mechanism to increase heat dissipation for the device being charged. In this way, because the external noise is high, the noise generated by the cooling mechanism has a smaller impact on the ambient noise. Therefore, it can increase heat dissipation for the device being charged without increasing or significantly increasing the ambient noise, thus allowing the device to operate in a lower-temperature charging environment, thereby improving charging efficiency and reliability. Conversely, when external noise is low, the control mechanism can reduce the heat dissipation power of the cooling mechanism to reduce heat dissipation for the device being charged. In this way, because the cooling power is lower, the noise generated by the cooling mechanism is lower, thus without increasing or significantly increasing the ambient noise, and preventing the cooling mechanism from becoming unreliable due to insufficient heat dissipation caused by excessive cooling power. Therefore, this application can adaptively adjust the heat dissipation effect of the cooling mechanism on the device being charged based on external noise, thereby improving charging efficiency without increasing or significantly increasing the ambient noise of the charging environment, or improving the reliability of the charging device while reducing the ambient noise of the charging environment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0018] Figure 1 This is a schematic diagram of the structure of the charging device of the first embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the structure of the charging device of the second embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the structure of the charging device of the third embodiment of this application;

[0021] Figure 4This is a structural schematic diagram of the fourth embodiment of the charging device of this application. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It is understood that the specific embodiments described herein are only for explaining this application and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings, not all structures. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0025] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] When using a charging device to charge a device, it is necessary to dissipate heat from the device to improve its charging efficiency and reliability. However, this usually increases the ambient noise of the charging environment. Especially in some charging environments, such as indoor charging environments, the ambient noise varies greatly between day and night, and also between quiet and noisy times during the day. For charging scenarios with large variations in ambient noise, it is necessary to improve charging efficiency or enhance the reliability of the charging device while simultaneously achieving heat dissipation.

[0028] This application proposes a charging device, such as Figure 1 As shown, Figure 1This is a schematic diagram of the structure of the first embodiment of the charging device of this application. The charging device of this embodiment (not shown) includes: a heat dissipation mechanism 1, a sound acquisition mechanism 20 and a control mechanism 30; the sound acquisition mechanism 20 is used to collect the ambient noise of the charging environment and generate a first electrical signal, the ambient noise including external noise and / or noise generated by the heat dissipation mechanism 1; the control mechanism 30 is connected to the heat dissipation mechanism 1 and the sound acquisition mechanism 20 respectively, and is used to control the heat dissipation mechanism 1 to dissipate heat from the charged device (not shown) that is being charged by the charging device based on the first electrical signal, wherein the heat dissipation power of the heat dissipation mechanism is positively correlated with the magnitude of the external noise. For example, when external noise is high, the control mechanism 30 controls the heat dissipation mechanism 1 to increase its heat dissipation power, thereby increasing heat dissipation for the device being charged. In this way, because the external noise is high, the noise generated by the heat dissipation mechanism has a smaller impact on the ambient noise. Therefore, it can increase heat dissipation for the device being charged without increasing or significantly increasing the ambient noise, thus allowing the device being charged to operate in a lower-temperature charging environment, thereby improving charging efficiency and reliability. Conversely, when external noise is low, the control mechanism 30 can control the heat dissipation mechanism 1 to reduce its heat dissipation power, thereby reducing heat dissipation for the device being charged. In this way, because the heat dissipation power is low, the noise generated by the heat dissipation mechanism is low, thus not increasing or significantly increasing the ambient noise. Furthermore, it prevents the heat dissipation mechanism 1 from becoming unreliable due to insufficient heat dissipation caused by excessive heat dissipation power. Therefore, this embodiment can adaptively adjust the heat dissipation effect of the heat dissipation mechanism 1 on the device being charged based on external noise, thereby improving charging efficiency without increasing or significantly increasing the ambient noise of the charging environment, or improving the reliability of the charging device while reducing the ambient noise of the charging environment.

[0029] The first electrical signal can be a voltage signal or a current signal, etc.

[0030] In some embodiments, the heat dissipation mechanism 1 includes a fan 10 and a cooling mechanism 40; the noise generated by the heat dissipation mechanism 1 includes fan noise generated by the fan 10; the control mechanism 30 is also connected to the fan 10 and is used to adjust the speed of the fan 10 based on a first electrical signal; the cooling mechanism 40 is connected to the control mechanism 30, and the control mechanism 30 is also used to adjust the cooling capacity of the cooling mechanism 40 based on the first electrical signal or the speed of the fan 10; wherein, the speed of the fan 10 is positively correlated with the magnitude of the external noise, and the cooling capacity is positively correlated with the speed of the fan 10.

[0031] The positive correlation between the rotational speed of the fan 10 and the magnitude of external noise means that the greater the external noise, the greater the rotational speed of the fan 10; the greater the rotational speed of the fan 10, the greater the fan noise generated by the fan 10. Because the external noise is large, the fan noise will not be prominent or will not significantly increase the environmental noise, and will not be easily noticed; the smaller the external noise, the smaller the rotational speed of the fan 10 will be in order to increase or not significantly increase the environmental noise, so as to generate less fan noise.

[0032] The positive correlation between cooling capacity and fan speed means that the higher the fan speed, the greater the cooling capacity of cooling mechanism 40. This is because a higher fan speed results in better heat dissipation for cooling mechanism 40, thus increasing its cooling capacity and allowing the charging equipment and the charged equipment to operate in a lower-temperature charging environment, thereby improving charging efficiency. Conversely, a lower fan speed results in less cooling capacity for cooling mechanism 40. This is because a lower fan speed results in poorer heat dissipation for cooling mechanism 40, thus reducing its cooling capacity to improve reliability.

[0033] The control mechanism 30 adjusting the cooling capacity of the refrigeration mechanism 40 based on the first electrical signal or the speed of the fan 10 means that the control mechanism 30 can directly adjust the cooling capacity of the refrigeration mechanism 40 based on the first electrical signal, or first adjust the speed of the fan 10 based on the first electrical signal, and then adjust the speed of the refrigeration mechanism 40 based on the speed of the fan 10.

[0034] Therefore, in this embodiment, when the external noise is high, the control mechanism 30 can increase the speed of the fan 10 and the cooling capacity of the cooling mechanism 40. In this way, the cooling capacity of the charging device can be increased without increasing or significantly increasing the ambient noise, thereby allowing the charging device and the device being charged to be in a lower-temperature charging environment, thus improving the charging efficiency. Conversely, when the external noise is low, the control mechanism 30 can reduce the speed of the fan 10 and the cooling capacity of the cooling mechanism 40. In this way, the cooling mechanism 40 can be kept from becoming unreliable due to insufficient heat dissipation caused by excessive cooling capacity without increasing the ambient noise. Therefore, this embodiment can adaptively adjust the speed of the fan 10 and the cooling capacity of the cooling mechanism 40 based on the external noise, thereby improving charging efficiency without increasing the ambient noise of the charging environment, or improving the reliability of the charging device while reducing the ambient noise of the charging environment.

[0035] In one application scenario, during product design, the minimum noise level corresponding to the minimum rotational speed of the fan 10 and the minimum cooling capacity of the cooling mechanism 40 can be defined within an ambient noise level of 12dB. The rotational speed, noise level, and cooling capacity can be defined using voltage. Simultaneously, a preset noise level corresponding to a preset rotational speed of the fan can be defined, where the preset rotational speed is greater than the minimum rotational speed, and the preset noise level is greater than the minimum noise level. For example, the control mechanism 30 can compare the voltage of the first electrical signal with the voltage of the preset noise level to determine the relative magnitudes of the external noise and the preset noise based on the comparison result. If the external noise level is greater than the preset noise level, the control mechanism increases the rotational speed of the fan 10 and the driving voltage of the cooling mechanism 40.

[0036] It can also define the mapping relationship between the magnitude of external noise, rotation speed and voltage, and pre-store the minimum rotation speed, minimum voltage and mapping relationship in the control mechanism 30.

[0037] In some embodiments, such as Figure 2 As shown, Figure 2 This is a schematic diagram of the structure of the charging device of the present application in the second embodiment. The control mechanism 30 of this embodiment includes: a switch circuit 31, a main control circuit 32, a fan control circuit 33, and a cooling control circuit 34. The switch circuit 31 is connected to the sound acquisition mechanism 20 and is used to convert the first electrical signal into a square wave signal. The main control circuit 32 is connected to the switch circuit 31 and is used to generate a second electrical signal based on the square wave signal and a preset noise level. The fan control circuit 33 is connected to the main control circuit 32 and the fan 10 respectively and adjusts the speed of the fan 10 based on the second electrical signal. The cooling control circuit 34 is connected to the main control circuit 32 and the cooling mechanism 40 respectively and adjusts the cooling capacity of the cooling mechanism 40 based on the second electrical signal or the speed of the fan.

[0038] The main control circuit 32 generates a second electrical signal based on a square wave signal and a preset noise level. This means that the main control circuit 32 determines the level of ambient noise (corresponding voltage) based on the square wave signal and generates a second electrical signal based on the level of ambient noise (corresponding voltage) and the preset noise level (corresponding voltage). The fan control circuit 33 adjusts the speed of the fan 10 based on the second electrical signal. The cooling control circuit 34 adjusts the cooling capacity of the cooling mechanism 40 based on the second electrical signal or the speed of the fan.

[0039] In this embodiment, the control mechanism 30 is implemented through a switch circuit 31, a main control circuit 32, a fan control circuit 33, and a cooling control circuit 34. On the one hand, it can realize the separate setting of control functions, improve the reliability of control, and on the other hand, the alternating on and off nature of the switch circuit 31 can convert the first electrical signal in AC form output by the sound acquisition mechanism 20 into a square wave signal, which is convenient for the main control circuit 32 to identify and process, thereby improving the accuracy of environmental noise acquisition.

[0040] The main control circuit 32 can be a microprocessor unit, etc., and the fan control circuit 33 and the cooling control circuit 34 can be a drive circuit or a drive chip with drive function, etc.; of course, the main control circuit 32, the fan control circuit 33 and the cooling control circuit 34 can also be integrated.

[0041] In some embodiments, such as Figure 2 As shown, the control mechanism 30 also includes a first filter circuit 35, which is connected to the sound acquisition mechanism 20 and the switch circuit 31 respectively, and is used to perform DC blocking filtering on the first electrical signal.

[0042] In some embodiments, the first electrical signal output by the sound acquisition mechanism 20 is an AC signal, which can be isolated from DC by the first filter circuit 35.

[0043] In some embodiments, such as Figure 2 As shown, the control mechanism 30 also includes a second filter circuit 36, connected to the switching circuit 31 and the sound acquisition mechanism 20, used to filter the power supply voltage VCC supplied to the switching circuit 31 and the sound acquisition mechanism 20. This improves power supply stability, thereby enhancing the reliability of the charging equipment.

[0044] In some embodiments, the charging device may include a power supply circuit that provides the supply voltage VCC; in other embodiments, the power supply circuit may be separate from the charging device.

[0045] In some embodiments, such as Figure 2 As shown, the switching circuit 31 includes an NPN transistor Q, a first resistor R1, and a second resistor R2; the first filter circuit 35 includes a first capacitor C1; the second filter circuit 36 ​​includes a second capacitor C2; and the control mechanism 30 further includes a third resistor R3. One end of the second capacitor C2, one end of the first resistor R1, one end of the second resistor R2, and one end of the third resistor R3 are connected to the power supply voltage VCC; the other end of the second capacitor C2 is grounded. One end of the first capacitor C1 is connected to the other end of the third resistor R3 and the sound acquisition mechanism 20, and the other end of the first capacitor C1 is connected to the other end of the second resistor R2 and the base of the NPN transistor Q. The emitter of the NPN transistor Q is grounded, and the collector of the NPN transistor Q is connected to the other end of the first resistor R1 and the main control circuit 32.

[0046] Among them, the third resistor R3 is the current-limiting resistor of the base of the NPN transistor Q, and the second resistor R2 is the driving resistor of the NPN transistor Q. The first resistor R1 is the current-limiting resistor of the collector of the NPN transistor Q. The first capacitor C1 converts the first electrical signal into an electrical signal that the circuit can recognize. The size of the first capacitor C1 determines the sensitivity of the noise acquisition of the control mechanism 30.

[0047] In some embodiments, the sound acquisition mechanism 20 includes a microphone; the cooling mechanism 40 includes a thermoelectric cooler. In other embodiments, other components with sound acquisition functions may be used instead of the microphone; a cooling element with thermoelectric cooling function may be used instead of the thermoelectric cooler. In other embodiments, a comparator circuit or other switching transistor may be used instead of the NPN transistor Q, and its peripheral circuitry may be adjusted accordingly.

[0048] In one application scenario, the microphone will not operate when the ambient noise is low. The operating voltage of the thermoelectric cooler is 3.0V (this parameter is selected according to the operating characteristics of the thermoelectric cooler), and the duty cycle of the control signal PWM of the fan 10 is 49% (selected according to the actual noise acceptable to the user under low noise of 12dB).

[0049] In one application scenario, when the ambient noise of the charging environment increases, the voltage across the second capacitor C2 will change, causing the NPN transistor Q to change from the off state to the on state, and the input electrical signal of the main control circuit 32 to change from low level to high level; the main control circuit 32 determines the magnitude of the ambient noise based on the frequency of the state reversal of the input electrical signal.

[0050] In some embodiments, such as Figure 2 As shown, the sound acquisition mechanism 20 includes: a first microphone 21 connected to the control mechanism 30, used to acquire ambient noise and generate a first electrical signal; wherein, when the ambient noise decreases as the speed of the fan 10 decreases, the fan 10 continues to be in a deceleration state (until the preset noise level) and the cooling mechanism 40 is in a cooling capacity reduction state (until the preset noise level); when the ambient noise does not decrease as the speed of the fan 10 decreases, the fan 10 is in a speed increase state until the speed increases to the preset upper limit, and the cooling mechanism 40 is in a cooling capacity increase state until the increase reaches the preset upper limit of the cooling capacity.

[0051] The control mechanism 30 controls the fan 10 to reduce its speed and compares the first electrical signal before and after the speed reduction to determine whether the ambient noise has decreased. If the control mechanism 30 determines that the ambient noise has decreased, it reduces the speed of the fan 10 and the cooling capacity of the cooling mechanism 40. If the control mechanism 30 determines that the ambient noise has not decreased, it increases the speed of the fan 10 until the speed reaches the preset upper limit and the cooling capacity of the cooling mechanism 40 reaches the preset upper limit.

[0052] The speed of the fan 10 and the cooling capacity of the refrigeration unit 40 can be controlled by voltage.

[0053] If the ambient noise decreases after the fan 10 slows down, then the ambient noise is determined to be fan noise. The fan speed 10 and the cooling capacity of the cooling unit 40 are then reduced to lower the ambient noise until the preset noise level is reached.

[0054] If the ambient noise is fan noise and the fan noise is greater than the preset noise level, then reduce the speed of fan 10 and the cooling capacity of cooling unit 40.

[0055] If the ambient noise does not decrease after the fan 10 slows down, then the ambient noise is determined to be external noise. The fan speed 10 is increased until the speed limit is set to the upper limit and the cooling capacity of the cooling mechanism 40 is increased until the cooling capacity is set to the upper limit, so as to increase the heat dissipation effect.

[0056] The control mechanism 30 processes the first electrical signal to determine whether the ambient noise is external noise or fan noise generated by the fan 10 itself.

[0057] In this embodiment, an ambient noise is collected by a microphone, namely the first microphone 21. After the control mechanism 30 determines the magnitude of the ambient noise, it first controls the speed of the fan 10 to decrease and determines whether the ambient noise decreases, thus determining whether the ambient noise is external noise or fan noise. If the ambient noise collected by the first microphone 21 does not decrease after the fan 10 is slowed down, it is determined that the ambient noise is external noise, and the control mechanism 30 increases the speed of the fan 10 and the cooling capacity of the thermoelectric cooler. During this process, stepless speed regulation and voltage regulation are performed. If the ambient noise collected by the first microphone 21 decreases after the fan 10 is slowed down, it is determined that the ambient noise is fan noise, and the control mechanism 30 decreases the speed of the fan 10 and the cooling capacity of the thermoelectric cooler. During this process, stepless speed regulation and voltage regulation are performed.

[0058] In some embodiments, the first microphone 21 is located at the air outlet or air inlet of the fan 10.

[0059] In some embodiments, the first pickup 21 may be a microphone or the like.

[0060] In some embodiments, such as Figure 3 As shown, Figure 3 This is a schematic diagram of the structure of the charging device according to the third embodiment of this application. The sound acquisition mechanism 20 includes a second microphone 22 and a third microphone 23. The second microphone 22 is connected to the control mechanism 30 and is used to acquire external noise; the third microphone 23 is connected to the control mechanism 30 and is used to acquire noise generated by the heat dissipation mechanism 1. In this embodiment, different microphones are used to acquire external noise and noise generated by the heat dissipation mechanism 1 respectively, so as to improve the accuracy of noise detection.

[0061] In some embodiments, the second microphone 22 can be located away from the fan 10, and the third microphone 23 can be located close to the fan 10, for example, at the air inlet or air outlet of the fan 10.

[0062] In some embodiments, the second pickup 22 and the third pickup 23 may be microphones, etc.

[0063] In some embodiments, such as Figure 2 As shown, the first filter circuit 35 can also be other types of filter circuits, such as a transformer. Of course, the sound acquisition mechanism 20 can also be improved to have its own DC isolation function, thereby omitting the first filter circuit 35 and improving the circuit integration.

[0064] In some embodiments, such as Figure 4 As shown, Figure 4 This is a schematic diagram of the structure of the fourth embodiment of the charging device of this application. The charging device of this embodiment also includes: a temperature acquisition mechanism 50, which is connected to the control mechanism 30 and is used to acquire the temperature of the charging environment. The control mechanism 30 is used to adjust the cooling capacity of the cooling mechanism 40 and the speed of the fan 10 based on the first electrical signal and the temperature; wherein, the cooling capacity and the speed are positively correlated with the temperature.

[0065] The temperature acquisition mechanism 50 can be a temperature sensor.

[0066] In one application scenario, when the control mechanism 30 determines based on the first electrical signal that the external noise is greater than a preset noise level (e.g., 40dB) and the temperature is higher than a preset temperature level (e.g., 35℃), the control mechanism 30 increases the speed of the fan 10 to match the current ambient noise level. At the same time, it can increase the driving voltage of the cooling mechanism 40, increase the cooling capacity of the cooling mechanism 40, and thus ensure that the charged device, such as a mobile phone, can maintain a fast and efficient charging at the maximum charging power in a low-temperature charging environment.

[0067] In another application scenario, when the ambient noise is low (e.g., 30dB), the speed of the fan 10 is reduced and the driving voltage of the cooling unit 40 is reduced to prevent excessive fan noise from affecting the user experience.

[0068] In another application scenario, when the ambient noise is less than the noise level corresponding to the minimum speed of the fan 10 (for example, the minimum speed corresponds to 29dB), and the current ambient noise is 25dB, it can be determined that it is being used at night. The control mechanism can control the fan 10 and the cooling mechanism 40 to stop working, so as to turn off the active heat dissipation. Users are not so sensitive to the charging time when they are asleep. They only need to wake up the next day with a full charge to ensure that the user has a high quality of sleep.

[0069] The charging device proposed in this application includes a heat dissipation mechanism, a sound acquisition mechanism, and a control mechanism. The sound acquisition mechanism is used to collect ambient noise in the charging environment and generate a first electrical signal. The ambient noise includes external noise and / or noise generated by the heat dissipation mechanism. The control mechanism is connected to both the heat dissipation mechanism and the sound acquisition mechanism, and is used to control the heat dissipation mechanism to dissipate heat from the device being charged based on the first electrical signal. The heat dissipation power of the heat dissipation mechanism is positively correlated with the magnitude of the external noise. For example, when the external noise is high, the control mechanism controls the heat dissipation mechanism to increase its heat dissipation power to increase the heat dissipation of the device being charged. In this way, because the external noise is high, the noise generated by the heat dissipation mechanism has a smaller impact on the ambient noise. Therefore, the heat dissipation of the device being charged can be increased without increasing or significantly increasing the ambient noise, thereby allowing the device being charged to be in a lower temperature charging environment, thus improving charging efficiency and reliability. Alternatively, when the external noise is low, the control mechanism can control the heat dissipation mechanism to reduce its heat dissipation power to reduce the heat dissipation of the device being charged. In this way, because the heat dissipation power is low, the noise generated by the heat dissipation mechanism is low, thus without increasing or significantly increasing the ambient noise, and ensuring that the heat dissipation mechanism does not suffer from insufficient heat dissipation due to excessive heat dissipation power, which could lead to low reliability. Therefore, this application can adaptively adjust the heat dissipation effect of the heat dissipation mechanism on the device being charged based on external noise, thereby improving charging efficiency without increasing or significantly increasing the ambient noise of the charging environment, or improving the reliability of the charging device while reducing the ambient noise of the charging environment.

[0070] The charging device of this application is not limited to chargers, but is applicable to any device or system that supports electrical transmission. The charging method of the charging device of this application is not limited to wireless charging, but can also be wired charging. The charging environment of this application is not limited to indoor charging environments.

[0071] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A charging device, characterized in that, include: Heat dissipation mechanism; A sound acquisition mechanism is used to acquire ambient noise in the charging environment and generate a first electrical signal, wherein the ambient noise includes external noise and / or noise generated by the heat dissipation mechanism; A control mechanism is connected to the heat dissipation mechanism and the sound acquisition mechanism respectively, and is used to control the heat dissipation mechanism to dissipate heat from the device being charged by the charging device based on the first electrical signal, wherein the heat dissipation power of the heat dissipation mechanism is positively correlated with the magnitude of the external noise.

2. The charging device according to claim 1, characterized in that, The heat dissipation mechanism includes: The fan, the noise generated by the heat dissipation mechanism includes the fan noise generated by the fan; the control mechanism is also connected to the fan and is used to adjust the speed of the fan based on the first electrical signal; A refrigeration mechanism is connected to the control mechanism, which is also used to adjust the refrigeration capacity of the refrigeration mechanism based on the first electrical signal or the rotational speed of the fan.

3. The charging device according to claim 2, characterized in that, The control mechanism includes: A switching circuit, connected to the sound acquisition mechanism, is used to convert the first electrical signal into a square wave signal; The main control circuit, connected to the switching circuit, is used to generate a second electrical signal based on the square wave signal and a preset noise level. A fan control circuit is connected to both the main control circuit and the fan, and adjusts the fan speed based on the second electrical signal. A refrigeration control circuit is connected to both the main control circuit and the refrigeration mechanism, and adjusts the refrigeration capacity of the refrigeration mechanism based on the second electrical signal or the speed of the fan.

4. The charging device according to claim 2, characterized in that, The charging device also includes: A temperature acquisition mechanism, connected to the control mechanism, is used to acquire the temperature of the charging environment. The control mechanism is used to adjust the cooling capacity of the cooling mechanism and the speed of the fan based on the first electrical signal and the temperature. The cooling capacity and the rotation speed are positively correlated with the temperature.

5. The charging device according to claim 2, characterized in that, The sound acquisition mechanism includes: A first microphone, connected to the control mechanism, is used to collect the ambient noise and generate the first electrical signal. Wherein, when the ambient noise decreases as the fan speed decreases, the fan continues to be in a speed-reducing state and the refrigeration mechanism is in a cooling-reducing state. When the ambient noise does not decrease with the rotational speed of the fan, the fan is in an acceleration state until it reaches the preset upper limit of the rotational speed, and the refrigeration mechanism is controlled to increase the cooling capacity until it increases to the preset upper limit of the cooling capacity.

6. The charging device according to claim 1, characterized in that, The sound acquisition mechanism includes: The second microphone, connected to the control mechanism, is used to collect the external noise; The third microphone is connected to the control mechanism and is used to collect the noise generated by the heat dissipation mechanism.

7. The charging device according to claim 3, characterized in that, The control mechanism also includes: The first filtering circuit is connected to the sound acquisition mechanism and the switching circuit respectively, and is used to perform DC blocking filtering on the first electrical signal.

8. The charging device according to claim 7, characterized in that, The control mechanism also includes: The second filtering circuit is connected to the switching circuit and the sound acquisition mechanism, and is used to filter the power supply voltage provided to the switching circuit and the sound acquisition mechanism.

9. The charging device according to claim 8, characterized in that, The switching circuit includes an NPN transistor, a first resistor, and a second resistor; the first filter circuit includes a first capacitor; the second filter circuit includes a second capacitor; and the control mechanism further includes a third resistor. Wherein, one end of the second capacitor, one end of the first resistor, one end of the second resistor, and one end of the third resistor are used to connect to the power supply voltage, and the other end of the second capacitor is grounded; one end of the first capacitor is connected to the other end of the third resistor and the sound acquisition mechanism, and the other end of the first capacitor is connected to the other end of the second resistor and the base of the NPN transistor; the emitter of the NPN transistor is grounded, and the collector of the NPN transistor is connected to the other end of the first resistor R1 and the main control circuit.

10. The charging device according to claim 5, characterized in that, The first microphone is located at the air outlet or air inlet of the fan.

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