A portable fan with predictable run time

Abstract

This utility model discloses a portable fan with predictable battery life, including a fan body. A circuit board assembly and a battery are installed inside the fan body housing. A microprocessor and a current collector are encapsulated within the circuit board assembly. The fan body is equipped with a load and a display device. The display device includes a function illumination display area and a battery life display area. This utility model allows the display device to indicate the current operating mode of the fan body and the battery life provided by the battery in that mode. The display uses intuitive and standard time units, achieving a clear visual perception effect. This provides users with accurate information on whether and how to use the portable fan. Furthermore, the battery life prediction method is accurate and calibrable, improving the user experience and practicality, and effectively contributing to the healthy and sustainable development of the portable fan industry.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, specifically a portable fan with predictable battery life. Background Technology

[0002] Fans are common household appliances used to cool people down in hot weather.

[0003] Fans are widely used for cooling purposes due to their practical function, and therefore possess powerful cooling capabilities.

[0004] Market demand.

[0005] Portable fans are a type of fan, characterized by their built-in rechargeable battery and convenient portability. However, to meet the demands of portability, the size and capacity of their built-in batteries are limited to some extent. This often leads to the embarrassing situation of users running out of power when using portable fans outdoors. Once this happens, not only does it fail to meet the user's needs, but the fan itself becomes a burden to the user. Although some portable fans have indicator lights to show the power level—for example, four indicator lights, where all four light up indicates a full charge and only one light up indicates 25% remaining power; or some fans have a display screen on the fan itself—these provide additional information about the remaining power. The display shows the percentage of remaining battery power. However, these indicators have significant drawbacks. First, they cannot estimate the corresponding usage time based on specific usage patterns; they are all vague indications without any reference basis. For example, the usage time is completely different when the fan starts a low-power load versus a high-power load. Second, they cannot intuitively indicate the remaining battery life. Users cannot quickly determine the remaining battery life based on the remaining power, as it is affected by various factors. Third, the remaining battery power is inaccurate. During use, the battery is affected by various factors and the environment is complex. It may indicate 75% remaining power one moment and drop to 60% the next. Without a scientific calculation method, the remaining battery power cannot be accurately estimated.

[0006] These factors lead many users to hesitate about carrying a fan when going out, which reduces the practicality of portable fans and ultimately hinders their widespread adoption. This is detrimental to the healthy and sustainable development of the industry, and addressing this shortcoming has become an urgent technical issue for us. Utility Model Content

[0007] The purpose of this invention is to provide a portable fan with predictable battery life. The fan body is equipped with a display device that indicates the current operating mode of the fan and the battery life provided in that mode. The display uses intuitive and standard units of time, providing a clear visual experience and offering users a precise basis for deciding whether and how to use the portable fan. Furthermore, the battery life prediction method is accurate and calibrable, enhancing the user experience and practicality. This invention effectively contributes to the healthy and sustainable development of the portable fan industry and solves the problems mentioned in the background section.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a portable fan with predictable battery life, comprising a fan body, the fan body including a housing, a circuit board assembly and a battery installed inside the housing, a microprocessor and a current collector encapsulated inside the circuit board assembly, a load and a display device disposed on the fan body, the load including a fan blade assembly, the display device including a function illumination display area and a battery life display area, and the battery, load and display device being electrically connected to the circuit board assembly.

[0009] Preferably, the microprocessor is a digital signal processor (DSP) or a microcontroller (MCU).

[0010] Preferably, the current acquisition device is a current sensor or a current acquisition circuit.

[0011] Preferably, the function illumination display area and the battery life display area are located in the same display area on the display device, and the function illumination display area and the battery life display area can be switched alternately.

[0012] Preferably, the load includes a semiconductor cooling device, which includes a heating and cooling semiconductor, a conductive element, and a heat sink. The housing has a semiconductor mounting through-hole that penetrates the housing wall. The heating and cooling semiconductors are respectively configured as a cooling working surface and a heating working surface on opposite sides of the housing wall. The heating and cooling semiconductors are embedded in the semiconductor mounting through-hole, with the cooling working surface facing outwards and the heating working surface facing inwards. A conductive element is provided on the outside of the cooling working surface, and the conductive element is thermally connected to the cooling working surface. The heating working surface is thermally connected to the heat sink.

[0013] Preferably, both the conductive element and the heat sink are aluminum alloy components.

[0014] Preferably, the circuit board assembly is electrically connected to control buttons and a power input interface.

[0015] Preferably, the control buttons include a power switch and a function mode switching button.

[0016] Preferably, the power input interface is a Type-C interface.

[0017] Preferably, the duration unit on the battery life display area can be "seconds", "minutes", "hours", or "days".

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This invention features a display device on the fan body that indicates the current operating mode of the fan and the battery's available runtime in that mode. The display uses intuitive and standard time units, providing a clear visual experience and offering users precise guidance on whether and how to use the portable fan. Furthermore, the runtime prediction method is accurate and calibrable, enhancing the user experience and practicality, and effectively contributing to the healthy and sustainable development of the portable fan industry. Attached Figure Description

[0020] Figure 1 This is an exploded view of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the display device structure of this utility model;

[0022] Figure 3 The three-dimensional appearance of this utility model Figure 1 ;

[0023] Figure 4 The three-dimensional appearance of this utility model Figure 2 ;

[0024] Figure 5 This is an exploded view of the structure of the semiconductor cooling device of this utility model;

[0025] Figure 6 This is a perspective view of the loading semiconductor cooling device of this utility model;

[0026] Figure 7 Example diagram showing that the function display area and the battery life display area of ​​this utility model are set in the same display area of ​​the display device.

[0027] In the diagram: 1 Circuit board assembly; 11 Power switch; 12 Function mode switching button; 13 Type-C interface; 2 Battery; 3 Drive fan blade assembly; 4 Display device; 41 Function illumination display area; 42 Battery life display area; 5 Semiconductor cooling device; 51 Conductive component; 52 Hot and cold semiconductor; 53 Semiconductor mounting through hole; 54 Heat sink. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-4 A portable fan with predictable battery life includes a fan body, which includes a housing. A circuit board assembly 1 and a battery 2 are installed inside the housing. A microprocessor and a current collector are encapsulated within the circuit board assembly 1. A load and a display device 4 are disposed on the fan body. The load includes a fan blade assembly 3. The display device 4 includes a function illumination display area 41 and a battery life display area 42. The function illumination display area 41 and the battery life display area 42 can be partitioned on the display device 4. Figure 2 As shown, when the surface area of ​​the housing is limited, in order to save space on the housing surface, it can also be located in the same display area on the display device 4, such as... Figure 7 As shown, the function illumination display area 41 and the battery life display area 42 alternately switch between display. The battery 2, the load and the display device 4 are all electrically connected to the circuit board assembly 1.

[0030] The microprocessor can be a digital signal processor (DSP) or a microcontroller (MCU).

[0031] The current acquisition device can be a current sensor or a current acquisition circuit.

[0032] like Figure 5 , Figure 6As shown, in addition to the fan blade assembly 3, the fan body can also be equipped with other loads, such as a semiconductor cooling device 5. The semiconductor cooling device 5 includes a heating and cooling semiconductor 52, a conductive element 51, and a heat sink 54. A semiconductor mounting through-hole 53 is provided on the housing, penetrating the housing wall. The heating and cooling semiconductor 52 has its opposite side walls configured as a cooling working surface and a heating working surface, respectively. The heating and cooling semiconductor 52 is embedded in the semiconductor mounting through-hole 53, with the cooling working surface facing outwards and the heating working surface facing inwards. The outer side of the cooling working surface is covered with a conductive element 51, which is thermally connected to the cooling working surface. The heating working surface is thermally connected to the radiator 54. Both the conductive element 51 and the radiator 54 are aluminum alloy components. When the cooling and heating semiconductor is working, the cooling effect generated by the cooling working surface can be conducted to the conductive element 51. When the conductive element 51 is applied to the human body, it can provide a local cold compress effect. The heat generated by the heating working surface is dissipated through the radiator 54. The radiator 54 is set in the air passage of the fan blade assembly 3. The heat emitted by the radiator 54 can be carried out by the airflow in the air passage and blown outward.

[0033] The circuit board assembly 1 is electrically connected to control buttons and a power input interface. The control buttons include a power switch 11 and a function mode switch 12. The power switch 11 controls the connection status of the fan body circuit; when the power switch 11 is off, all loads stop working, effectively reducing power consumption. The function mode switch 12 is used to adjust the working status and mode of the switching loads. The power input interface is a Type-C interface 13. Connecting an external power supply to the Type-C interface 13 using a charging cable allows the battery 2 to be charged to replenish its power.

[0034] A method for predicting the battery life of a portable fan, comprising the following steps:

[0035] S1) Initialize the battery capacity, start the load operation, until the battery power is exhausted, and when the battery power is no longer able to support the operation of the lowest power load alone, it is considered that the battery power is exhausted, and the microprocessor will clear the total current margin of the battery to zero.

[0036] S2) Connect the power input interface and the external power supply with the charging cable to charge the battery;

[0037] S3) The current acquisition device collects the current value flowing into the battery during the charging process. The microprocessor integrates the collected current value over time. The integration process can be expressed as accumulating the current value at discrete time points, i.e., ∑(I[n]×Δt), where I[n] represents the current value at the nth time and Δt represents the time interval. The total current margin is updated at the same time after each integration.

[0038] S4) When the load is turned on, the current collector collects the current value flowing from the battery during the load operation. The microprocessor deducts points from the collected current value over time. After each deduction, the total current margin is updated. At the same time, the microprocessor calculates the current value consumed by the load per unit time based on the collected deducted total current value. Then, the microprocessor calculates the remaining battery life under the current load environment using the formula "total current margin ÷ current value consumed per unit time", and converts it into the corresponding time unit on the display device and displays it to the user on the "battery life display area" of the display device. At the same time, the "function display area" on the display device will display the current load status.

[0039] S5) The type of load that can be turned on can be switched by controlling the button. Similarly, as described in S4 above, the load that is turned on will be displayed to the user through the "function lighting display area". At the same time, the "battery life display area" on the display device will show the user the battery life under the current load conditions.

[0040] S6) If a significant time difference is found in the battery life during use, the above S1 operation can be repeated to initialize the battery capacity, which is used to correct the consistency of the current hardware environment and ensure the accuracy of the battery life.

[0041] The duration display area can be in units of "seconds", "minutes", "hours", or "days", and the duration units can correspond to standard symbols such as s, m, h, T, etc.

[0042] In summary, this utility model features a display device 4 on the fan body, which indicates the current operating mode of the fan body and the battery life provided by the battery 2 in the corresponding operating mode. The display uses intuitive and standard time units, achieving a clear visual perception effect. This provides users with accurate information on whether and how to use the portable fan. Furthermore, the battery life prediction method is accurate and calibrable, enhancing the user experience and practicality, and effectively contributing to the healthy and sustainable development of the portable fan industry.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A portable fan with predictable battery life, comprising a fan body, the fan body including a housing, wherein a circuit board assembly (1) and a battery (2) are installed within the housing, characterized in that, The circuit board assembly (1) contains a microprocessor and a current collector. The fan body is provided with a load and a display device (4). The load includes a fan blade assembly (3). The display device (4) includes a function lighting display area (41) and a battery life display area (42). The battery (2), the load and the display device (4) are all electrically connected to the circuit board assembly (1).

2. A portable fan with predictable battery life according to claim 1, characterized in that, The microprocessor is a digital signal processor (DSP) or a microcontroller (MCU).

3. A portable fan with predictable battery life according to claim 1, characterized in that, The current acquisition device is a current sensor or a current acquisition circuit.

4. A portable fan with predictable battery life according to claim 1, characterized in that, The function lighting display area (41) and the battery life display area (42) are located in the same display area on the display device (4), and the function lighting display area (41) and the battery life display area (42) can be switched alternately.

5. A portable fan with predictable battery life according to claim 1, characterized in that, The load includes a semiconductor cooling device (5), which includes a hot and cold semiconductor (52), a conductive element (51), and a heat sink (54). A semiconductor mounting through hole (53) is provided on the housing, which penetrates the housing wall. The hot and cold semiconductor (52) is configured as a cooling working surface and a heating working surface on opposite sides of the housing wall. The hot and cold semiconductor (52) is embedded in the semiconductor mounting through hole (53). The cooling working surface faces the outside of the housing, and the heating working surface faces the inside of the housing. The conductive element (51) is provided on the outside of the cooling working surface. The conductive element (51) is thermally connected to the cooling working surface, and the heating working surface is thermally connected to the heat sink (54).

6. A portable fan with predictable battery life according to claim 5, characterized in that, Both the conductive components and the heat sink are made of aluminum alloy.

7. A portable fan with predictable battery life according to claim 1, characterized in that, The circuit board assembly (1) is electrically connected to control buttons and a power input interface.

8. A portable fan with predictable battery life according to claim 7, characterized in that, The control buttons include a power switch (11) and a function mode switching button (12).

9. A portable fan with predictable battery life according to claim 7, characterized in that, The power input interface is a Type-C interface (13).

10. A portable fan with predictable battery life according to claim 1 or 4, characterized in that, The duration display area can be in units of "seconds", "minutes", "hours", or "days".

Images