Portable fan with predictable battery life

Abstract

To provide a portable electric fan with a predictable battery life. The solution includes a fan body, a circuit board assembly 1 and a storage battery 2 mounted within the housing of the fan body, a microprocessor and a current collector sealed within the circuit board assembly, and a load and display device 4 provided on the fan body, the display device including a function lighting display area and a battery run time display area. The display device indicates the currently activated operating mode of the fan body and the battery run time that the storage battery can provide for the corresponding operating mode, and displays the time in intuitive and standard time units, achieving a clear visual perception effect at a glance and providing users with accurate basis for deciding whether to use the portable fan and how to use it. Furthermore, the battery run time prediction method is accurate and adjustable, improving the user experience and practicality and effectively supporting the healthy and sustainable development of the portable fan industry.

Description

[Technical Field]

[0001] The present invention relates to the technical field of electric fans, and more particularly to a portable electric fan with a predictable battery life. [Background technology]

[0002] 2. Description of the Related Art Electric fans are common household appliances in our daily lives, generating wind to provide a feeling of coolness in hot weather environments. Due to their practical functions, they are widely used and applied, and therefore enjoy a very large market demand.

[0003] Portable fans are a type of fan category, and are characterized by their built-in batteries, making them easy to carry and use. However, in order to meet the needs of portability and use, the size and capacity of the built-in batteries are limited to a certain extent. This can cause the embarrassment of running out of power when using a portable fan when going out. Once this happens, not only will the fan not be able to meet the user's needs, but it will also be a burden for the user to carry the fan itself. Some portable fans are equipped with indicators to show the amount of power remaining. For example, four indicators are provided, and when all four indicators are lit, it indicates a fully charged state, and when only one indicator is lit, it indicates that 25% of the power remains. Alternatively, some fans are equipped with a display, which can be used to display the status of the battery. It is possible to see the percentage of remaining power, but these indication methods all have obvious defects. First, it is not possible to estimate the corresponding usage time according to the specific usage mode. All of the indications are unclear and there is no reference basis. For example, when a fan is activated with a low power consumption load and a high power consumption load, it will take completely different usage times. Second, it is not possible to intuitively indicate the battery running time. Users cannot quickly determine the battery running time based on the remaining power, as battery running time is affected by various factors. Third, the indication of the remaining power is inaccurate. During use, the battery is affected by various factors and the environment is complex, so although the remaining power is currently indicated as 75%, it may drop to 60% in an instant. There is no scientific calculation method, so the remaining power cannot be accurately estimated.

[0004] The above factors ultimately cause many users to hesitate about whether to carry a fan when going out, which can unconsciously reduce the practicality of portable fans and ultimately reduce the effectiveness of the application and popularization of portable fans, which is detrimental to the healthy and sustainable development of the industry. Eliminating these defects has become a technical challenge that needs to be resolved as soon as possible. Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention aims to provide a portable fan with a predictable battery life. The fan body is provided with a display device that indicates the currently activated operating mode of the fan body and the battery life that the storage battery can provide for the corresponding operating mode, and the display is presented in intuitive and standard time units, achieving a clear visual perception effect at a glance and providing the user with an accurate basis for deciding whether to use the portable fan and how to use it. In addition, the battery life prediction method is accurate and adjustable, improving the user's usage experience and practicality, effectively supporting the healthy and sustainable development of the portable fan industry, and resolving the problems in the background art. [Means for solving the problem]

[0006] To achieve the above object, the present invention provides the following technical means: A portable fan with a predictable battery life includes a fan body including a housing with a circuit board assembly and a storage battery mounted therein, a microprocessor and a current collector sealed within the circuit board assembly, a load and a display device provided on the fan body, the load including a group of fan blades, the display device including a function lighting display area and a battery life display area, and the storage battery, the load, and the display device are all electrically connected to the circuit board assembly.

[0007] Preferably, the microprocessor is a digital signal processor (DSP) or a microcontroller (MCU).

[0008] Preferably, the current collector is a current sensor or a current collection circuit.

[0009] Preferably, the function lighting display area and the battery operating time display area are provided in the same display area of ​​the display device, and can be displayed by switching between them alternately.

[0010] Preferably, the load includes a semiconductor cooling device, the semiconductor cooling device including a heat-generating semiconductor, a conductive member, and a heat sink, the housing is formed with a semiconductor mounting through-hole, the semiconductor mounting through-hole is provided through a wall of the housing, a cooling operating surface and a heat-generating operating surface are provided on the wall surfaces on opposite sides of the heat-generating semiconductor, the heat-generating semiconductor is fitted into the semiconductor mounting through-hole, the cooling operating surface is provided facing the outside of the housing, the heat-generating operating surface is provided facing the inside of the housing, a conductive member is provided covering the outside of the cooling operating surface, the conductive member is thermally conductively connected to the cooling operating surface, and the heat-generating operating surface is thermally conductively connected to the heat sink.

[0011] Preferably, the conductive member and the heat sink are both aluminum alloy members.

[0012] Preferably, the circuit board assembly is provided with a control button and a power input port electrically connected thereto.

[0013] Preferably, the control buttons include a power switch and a function mode switching button.

[0014] Preferably, the power input port is a Type-C port.

[0015] Preferably, the time unit in the battery drive time display area is "seconds", "minutes", "hours", or "days". [Effects of the Invention]

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] In this invention, a display device is provided on the fan body, which indicates the currently activated operating mode of the fan body and the operating battery life that the storage battery can provide for the corresponding operating mode, and by displaying the information in intuitive and standard time units, it achieves a clear visual sensation effect at a glance and provides users with an accurate basis for deciding whether to use this portable fan and how to use it. In addition, the battery life prediction method is accurate and adjustable, which improves the user's usage experience and practicality and effectively supports the healthy and sustainable development of the portable fan industry. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 2 is an exploded view of the structure of the present invention. [Figure 2] 1 is a schematic diagram of a display device according to the present invention; [Figure 3] 1 is an external perspective view of the present invention. [Figure 4] FIG. 2 is an external perspective view of the present invention. [Figure 5] 1 is an exploded view of the semiconductor cooling device of the present invention when installed; FIG. [Figure 6] 1 is a perspective view of the appearance of a semiconductor cooling device according to the present invention when installed; [Figure 7] 1 is a diagram illustrating a case in which the function lighting display area and the battery life display area of ​​the present invention are arranged in the same display area of ​​a display device. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, the technical means in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, and not all embodiments, and all other embodiments that can be obtained by those skilled in the art based on the embodiments of the present invention without any creative work fall within the scope of protection of the present invention.

[0020] As shown in Figures 1 to 4, a portable fan with a predictable battery life includes a fan body including a housing in which a circuit board assembly 1 and a storage battery 2 are mounted, a microprocessor and a current collector are sealed within the circuit board assembly 1, and the fan body is provided with a load and a display device 4, the load including a group of fan blades 3, and the display device 4 including a function lighting display area 41 and a battery life display area 42, the function lighting display area 41 and the battery life display area 42 may be provided separately on the display device 4, or as shown in Figure 2, when the surface area of ​​the housing is limited, they may be provided in the same display area on the display device 4 to save the occupied surface area, or as shown in Figure 7, the displays are switched alternately, and the storage battery 2, the load, and the display device 4 are all electrically connected to the circuit board assembly 1.

[0021] The microprocessor may be selected from a digital signal processor (DSP) or a microcontroller (MCU).

[0022] The current collector may be selected from a current sensor or a current collection circuit.

[0023] As shown in FIGS. 5 and 6, the load on the fan body may be other than the blower blade group 3, for example, a semiconductor cooling device 5 is provided. The semiconductor cooling device 5 includes a thermal semiconductor 52, a conductive member 51, and a heat sink 54. The housing has a semiconductor mounting through-hole 53 formed therein. The semiconductor mounting through-hole 53 penetrates the wall of the housing. A cooling surface and a heat generating surface are provided on the wall surfaces on both sides opposite the thermal semiconductor 52. The thermal semiconductor 52 is fitted into the semiconductor mounting through-hole 53, and the cooling surface faces the outside of the housing and the heat generating surface faces the inside of the housing. a conductive member 51 covering the outside of the cooling surface, the conductive member 51 being connected to the cooling surface in a thermally conductive manner, and the heat-generating surface being connected to a heat sink 54 in a thermally conductive manner, the conductive member 51 and the heat sink 54 being both made of aluminum alloy members, and when the cooling semiconductor 52 is in operation, the cooling effect of the cooling surface can be conducted to the conductive member 51, and when the conductive member 51 acts on the human body, it achieves a localized cooling care effect on the human body, and the heat generated by the heat-generating surface is dissipated by the heat sink 54, which is installed in the duct of the fan blade group 3, and the radiated heat can be blown out to the outside by the air flow in the duct.

[0024] A control button and a power input port are electrically connected to the circuit board assembly 1. The control buttons include a power switch 11 and a function mode switch button 12. The power switch 11 controls the circuit conduction state of the electric fan body. When the power switch 11 is turned off, all loads are operational, effectively reducing the loss of electricity. The function mode switch button 12 adjusts and switches the operating state and operating mode of the loads. The power input port is a Type-C port 13. A charging cable can be used to connect an external power source to the Type-C port 13 to charge the storage battery 2 and replenish electricity.

[0025] The method for predicting the battery drive time of a portable electric fan whose battery drive time is predictable includes the following steps S1) to S6).

[0026] In S1), the battery capacity is initialized, and the load operation is started until the battery runs out of power. When the battery's power is not enough to support starting the load operation with minimum power consumption alone, it is considered that the battery has run out of power, and the microprocessor clears the total remaining current value of the battery.

[0027] In S2), a charging cable is used to connect the power input port to an external power supply and charge the storage battery.

[0028] In S3), the current collector collects the current flowing into the battery during the charging process, and the microprocessor integrates the collected current over time. During the integration process, the current values ​​at discrete times are accumulated, i.e., expressed as Σ(I[n]×Δt), where I[n] represents the current value at the nth time, and Δt represents the time interval. After each integration, the total remaining current value is updated simultaneously.

[0029] In S4), the load is started, and the current collector collects the current value flowing from the battery during the load operation. The microprocessor performs a time deduction on the collected current value, and simultaneously updates the total current remaining value after each deduction. The microprocessor calculates the load current consumption value per unit time based on the collected total current deduction value. Next, the microprocessor calculates the remaining battery operating time under the current load environment based on the formula "total current remaining value ÷ current consumption value per unit time". This is converted into a time unit corresponding to the display device and displayed to the user in the "battery operating time display area" of the display device, and the current load operating status is displayed in the "function lighting display area" of the display device.

[0030] In S5), the type of load to be activated can be switched using the control button, and as in S4 above, the load to be activated is displayed to the user in the "function lighting display area", and the battery operating time under the current load operating conditions is displayed to the user in the "battery operating time display area" on the display device.

[0031] In step S6), if there is a significant difference in the battery life during use, the user can perform step S1 again to initialize the battery capacity, correct the consistency in the current hardware environment, and ensure the accuracy of the battery life.

[0032] The time unit in the battery operating time display area can be "seconds", "minutes", "hours", or "days", and the time unit can use standard symbols such as s, m, h, T, etc.

[0033] As described above, in this invention, the fan body is provided with a display device 4, which indicates the currently activated operating mode of the fan body and the operating battery life that the storage battery 2 can provide for the corresponding operating mode, and by displaying the information in intuitive and standard time units, it achieves a clear visual perception effect at a glance and provides the user with an accurate basis for deciding whether to use this portable fan and how to use it. In addition, the battery life prediction method is accurate and adjustable, which improves the user's usage experience and practicality and effectively supports the healthy and sustainable development of the portable fan industry.

[0034] It should be noted that, as used herein, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another and do not necessarily require or imply that any such actual relationship or ordering exists between those entities or operations. The terms "comprises," "having," or any other variation thereof, are intended to be non-exclusive inclusive, such that a process, method, article, or apparatus comprising a set of elements not only includes those elements, but also other elements not expressly listed or inherent in such process, method, article, or apparatus.

[0035] Although the embodiments of the present invention have been shown and described above, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited only by the appended claims and their equivalents. [Explanation of symbols]

[0036] 1 Circuit Board Assembly 11 Power switch 12 Function mode switching button 13. Type-C port 2. Storage battery 3. Blower blade group 4 Display device 41 Function lighting display area 42 Battery life display area 5. Semiconductor cooling device 51 Conductive material 52 Cooling semiconductors 53 Semiconductor mounting through hole 54 Heatsink

Claims

1. A portable fan with a predictable battery life, comprising a fan body including a housing with a circuit board assembly (1) and a storage battery (2) mounted therein, wherein a microprocessor and a current collector are sealed within the circuit board assembly (1), the fan body is provided with a load and a display device (4), the load includes a group of blower blades (3), the display device (4) includes a function lighting display area (41) and a battery life display area (42), and the storage battery (2), the load, and the display device (4) are all electrically connected to the circuit board assembly (1).

2. 2. The portable fan according to claim 1, wherein the microprocessor is a digital signal processor (DSP) or a microcontroller (MCU).

3. 2. The portable fan with predictable battery life according to claim 1, wherein the current collector is a current sensor or a current collection circuit.

4. A portable fan with a predictable battery operating time as described in claim 1, characterized in that the function lighting display area (41) and the battery operating time display area (42) are provided in the same display area of ​​the display device (4) and can be displayed alternately.

5. 2. The portable fan with a predictable battery life as described in claim 1, wherein the load includes a semiconductor cooling device (5), the semiconductor cooling device (5) including a heat-generating semiconductor (52), a conductive member (51), and a heat sink (54), the housing is formed with a semiconductor mounting through-hole (53), the semiconductor mounting through-hole (53) is provided through a wall of the housing, and a cooling operating surface and a heat-generating operating surface are provided on both wall surfaces opposite the heat-generating semiconductor (52), the heat-generating semiconductor (52) is fitted into the semiconductor mounting through-hole (53), the cooling operating surface is provided facing the outside of the housing, and the heat-generating operating surface is provided facing the inside of the housing, a conductive member (51) is provided covering the outside of the cooling operating surface, the conductive member (51) is thermally conductively connected to the cooling operating surface, and the heat-generating operating surface is thermally conductively connected to the heat sink (54).

6. 6. The portable electric fan with predictable battery life according to claim 5, wherein the conductive member (51) and the heat sink (54) are both made of aluminum alloy.

7. 2. The portable fan with predictable battery life as claimed in claim 1, wherein the circuit board assembly (1) is provided with a control button and a power input port electrically connected thereto.

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

9. 8. The portable fan with predictable battery life according to claim 7, wherein the power input port is a Type-C port (13).

10. A portable fan with a predictable battery operating time as described in claim 1 or 4, characterized in that the time unit in the battery operating time display area (42) is "seconds", "minutes", "hours", or "days".

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