Air pump with double power supply modes and control method thereof

Abstract

The invention discloses an air pump with double power supply modes and a control method thereof, and belongs to the technical field of air pumps, and the air pump comprises a pump core, a cigarette lighter interface, a built-in battery cell, a power management module and a control unit. The pump core is used for generating compressed air; the cigar lighter interface is used for being connected with a cigar lighter of an external vehicle so as to provide working electric energy of the first power supply mode; the built-in battery core is used for providing working electric energy for the pump core in a second power supply mode; the power management module is electrically connected with the built-in battery cell and the cigarette lighter interface, and is used for detecting a current power supply source and switching to a corresponding power supply mode; and the control unit is in signal connection with the power management module and the pump core. According to the air pump, the cigarette lighter interface is arranged under the condition that the air pump is provided with the built-in battery cell, and when the power supply source is detected to be the cigarette lighter interface through the power management module, the limited 120 W power is specially used for a low-voltage interval, so that the inflation efficiency of products such as paddle boards is ensured.

Description

Technical Field

[0001] This invention relates to the field of sampling device technology, specifically to an air pump with dual power supply modes and its control method. Background Technology

[0002] With the increasing popularity of outdoor activities and self-driving travel, the demand for multi-functional portable air pumps is growing. Currently, there are dual-purpose air pumps on the market that can inflate both high-pressure, large-volume objects (e.g., 60 PSI and above) such as truck and RV tires, and low-pressure, large-volume objects (e.g., 0-20 PSI) such as paddleboards and air mattresses. To achieve the high flow rate and power required for high-pressure, large-volume inflation, these products typically use built-in batteries (cells) with high discharge capacity.

[0003] To alleviate users' "power anxiety," extend usage time, or address situations where the battery is depleted, some products have attempted to add a cigarette lighter power interface. However, the capacity of a vehicle's cigarette lighter interface is limited, typically rated at around 120W (12V, 10A). If, in cigarette lighter power mode, the air pump still attempts to handle both low-pressure, high-flow and high-pressure, high-flow conditions, the limited 120W power must be allocated between the high and low pressure ranges. This results in the pump core actually receiving far less power than its design capacity during low-pressure inflation (such as inflating paddleboards), causing extremely slow inflation speeds, a poor user experience, and rendering the function practically useless. Therefore, how to ensure the practicality and user experience of cigarette lighter power supply in typical application scenarios (especially low-pressure inflation) while introducing the convenient function of cigarette lighter power supply has become a technical problem that urgently needs to be solved in this field. Summary of the Invention To address the aforementioned technical shortcomings, the present invention aims to provide an air pump with dual power supply modes and its control method. The air pump, equipped with a built-in battery, includes a cigarette lighter interface. When the power management module detects that the power source is the cigarette lighter interface, the limited maximum power of 120W is distributed at the most commonly used pressure value in the low-pressure range, such as 15PSI, ensuring the inflation efficiency of products such as paddleboards. This solves the technical problems mentioned in the background art.

[0004] To solve the above technical problems, the present invention adopts the following technical solution: The present invention provides an air pump with dual power supply modes, comprising: a pump core, a cigarette lighter interface, a built-in battery, a power management module, and a control unit. The pump core is used to generate compressed air; the cigarette lighter interface is used to connect to the cigarette lighter of an external vehicle to provide operating power in a first power supply mode; the built-in battery is used to provide operating power to the pump core in a second power supply mode; the power management module is electrically connected to the built-in battery and the cigarette lighter interface, and is used to detect the current power source and switch to the corresponding power supply mode; the control unit is signal-connected to the power management module and the pump core, and the control unit is configured to: When the power management module detects that the cigarette lighter interface is connected, it identifies it as the first power supply mode and controls the air pump to only operate within a preset first air pressure range, wherein the upper limit of the first air pressure range does not exceed a first predetermined air pressure value. When the power management module does not detect the cigarette lighter interface being connected, it identifies it as the second power supply mode and controls the air pump to operate within a preset second air pressure range, wherein the upper limit of the second air pressure range is greater than the first predetermined air pressure value.

[0005] As a preferred technical solution, the first predetermined air pressure value is 40 PSI, the first air pressure range is 0-40 PSI, and the second air pressure range is 0-160 PSI. As a preferred technical solution, a user interface is also included, which is signal-connected to the control unit; in the first power supply mode, the control unit controls the user interface to display only the setting options related to the first air pressure range, and disables the options related to air pressure settings higher than the first predetermined air pressure value; in the second power supply mode, the control unit controls the user interface to display all setting options related to the second air pressure range. As a preferred technical solution, in the first power supply mode, the power management module and / or control unit allocates all available power from the cigarette lighter interface to the pump core for operation within the first gas pressure range; wherein, the maximum available power is approximately 120W.

[0006] As a preferred technical solution, the discharge power of the built-in battery cell is greater than the power provided by the cigarette lighter interface in the first power supply mode. The air pump control method includes the following steps: The power management module detects the current power source; If the power management module detects that the power source is the cigarette lighter interface, it enters the first power supply mode, and the working air pressure of the air pump is within the first air pressure range. If the power management module does not detect a cigarette lighter interface connection, it enters the second power supply mode, and the working air pressure of the air pump is within the first air pressure range and / or the second air pressure range.

[0007] As a preferred technical solution, in the first power supply mode, the method further includes: providing only an operation interface related to the first air pressure range on the user interface, and hiding or disabling functions related to air pressure settings higher than the first predetermined air pressure value.

[0008] As a preferred technical solution, in the first power supply mode, all available power from the cigarette lighter interface is concentrated to supply the pump core to optimize the inflation efficiency within the first air pressure range.

[0009] The beneficial effects of this invention are as follows: 1. This invention features a cigarette lighter interface in the air pump with a built-in battery cell. When the power management module detects that the power source is the cigarette lighter interface, it distributes the limited maximum power of 120W at the most commonly used pressure value position in the low-pressure range, such as 15PSI, to ensure the inflation efficiency of products such as paddleboards.

[0010] 2. In the first power supply mode, the display interface of this invention only offers three modes: inflation / deflation (0~2PSI pressure adjustment range), paddleboard mode (0~20PSI pressure adjustment range), and car mode (0~40PSI pressure adjustment range). The pressure setting range is 0-40PSI. Users do not need to manually judge and switch modes, which avoids damage to the air pump or extremely slow speed caused by trying to inflate with high pressure under cigarette lighter power supply, thus improving practicality and reliability. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of an air pump with dual power supply modes provided in an embodiment of the present invention.

[0013] Figure 2 This is a flowchart of the air pump control method of the present invention.

[0014] Figure 3 This is a schematic diagram of an air pump with dual power supply modes provided in this invention.

[0015] Explanation of reference numerals in the attached diagram: 1-Pump core, 2-Cigarette lighter interface, 3-Built-in battery, 4-Power management module, 5-Control unit. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1: like Figure 1 and Figure 3 As shown, this embodiment provides an air pump with dual power supply modes, including: a pump core 1, a cigarette lighter interface 2, a built-in battery cell 3, a power management module 4, and a control unit 5; wherein, the built-in battery cell can be a lithium battery pack, and the cigarette lighter interface includes necessary voltage conversion and protection circuits. The pump core 1 is used to generate compressed air; the cigarette lighter interface 2 is used to connect to the cigarette lighter of an external vehicle to provide operating power in the first power supply mode; the built-in battery cell 3 is used to provide operating power to the pump core 1 in the second power supply mode.

[0017] The power management module 4 is electrically connected to the built-in battery cell 3 and the cigarette lighter interface 2. It is used to detect the current power source and switch to the corresponding power supply mode. The power management module 4 continuously monitors whether there is voltage input at the cigarette lighter interface. When the air pump is connected to the vehicle's cigarette lighter socket via the cigarette lighter cable, the power management module 4 detects an external 12V voltage and switches to using the cigarette lighter interface 2 as the primary power source. This signal is transmitted to the control unit 5. The control unit 5 is signal-connected to the power management module 4 and the pump core 1. The control unit 5 is configured to: when the power management module 4 detects that the cigarette lighter interface 2 is connected, identify it as the first power supply mode and control the air pump to operate only within a preset first air pressure range, the upper limit of which does not exceed a first predetermined air pressure value; when the power management module 4 does not detect that the cigarette lighter interface 2 is connected, identify it as the second power supply mode and control the air pump to operate within a preset second air pressure range, the upper limit of which is greater than the first predetermined air pressure value.

[0018] In fact, after receiving the "cigarette lighter power" signal, the control unit immediately performs the following operations: a) Functional limitation: Sends a command to the pump core driver to limit the maximum output air pressure of the pump core to 40 PSI. Any command attempting to set a target value higher than 40 PSI is ignored or rejected internally by the MCU.

[0019] b) Interface Adaptation: The control user interface will change the original "Truck Tire Mode," "RV Tire Mode," "Bicycle Tire Mode," or "Free Setting Mode," which require air pressure above 40 PSI, to grayed-out and unclickable or hidden. Only "Paddleboard / Air Cushion Mode / Car Mode" or "Low Pressure Setting" (adjustable from 0-40 PSI) will be highlighted. Simultaneously, an icon indicating "Cigarette Lighter Powering On" will be displayed on the screen.

[0020] c) Power distribution: The control unit works in conjunction with the power management module to ensure that all power input for the pump core at this time comes from the cigarette lighter interface, and allows the pump core to operate at a maximum power of close to 120W at a pressure value of 15PSI within the 0-40 PSI range, thereby obtaining the maximum flow rate at that pressure value.

[0021] When the cigarette lighter socket is disconnected, the power management module detects the disappearance of external voltage and switches to power supply from the built-in battery; upon receiving the mode switching signal, the control unit removes all restrictions. a) Function release: Allows the pump core to operate in the full range of 0-160 PSI, depending on user settings.

[0022] b) Interface Restore: The control user interface restores all settings options, and users can freely choose between low-pressure or high-pressure inflation modes.

[0023] c) Power support: The built-in battery has a high-rate discharge capability and can provide power far exceeding 120W to meet the higher power required by the pump core when it is working in the high-pressure range. Furthermore, the first predetermined air pressure value is 40 PSI, and the first air pressure range is 0-40 PSI. Within this air pressure range, it is suitable for paddleboard inflation and inflation of passenger car tires where the requirements for air pressure and air flow rate are not high. The second air pressure range is 0-160 PSI, within which paddleboard inflation and other inflation methods can be achieved. Furthermore, it also includes a user interface, which includes a display screen and buttons; the user interface is signal-connected to the control unit; in the first power supply mode, the control unit controls the user interface to display only the setting options related to the first air pressure range, and disables the options related to air pressure settings higher than the first predetermined air pressure value; that is, in this case, the display interface only offers inflation / deflation mode, car mode, and paddleboard mode, with a pressure setting range of 0-40 PSI. In the second power supply mode, the control unit controls the user interface to display all setting options related to the second air pressure range; that is, in this case, the display interface offers inflation / deflation mode, paddleboard mode, and other conventional modes, with a pressure setting range of 0-160 PSI. Furthermore, in the first power supply mode, the power management module and / or control unit allocates all available power from the cigarette lighter interface to the pump core for operation within the first air pressure range; wherein, the maximum available power is approximately 120W, ensuring air filling of the paddle plate for an appropriate duration.

[0024] Furthermore, the discharge power of the built-in battery cell is greater than the power provided by the cigarette lighter interface in the first power supply mode, so as to ensure inflation for different gas pressure requirements. Please see Figure 2 As shown, the air pump control method includes the following steps: The power management module detects the current power source; If the power management module detects that the power source is the cigarette lighter interface, it enters the first power supply mode, and the air pump's operating air pressure is within the first air pressure range. If the power management module does not detect a cigarette lighter interface connection, it enters the second power supply mode, and the air pump's operating air pressure is within the first air pressure range and / or the second air pressure range. This allows for continuous monitoring of the air pump's power supply status and dynamic switching, addressing potential electrical hazards while adapting to different inflation modes, making it convenient and practical. Furthermore, in the first power supply mode, the method also includes: providing only the operation interface related to the first air pressure range on the user interface, and hiding or disabling functions related to air pressure settings higher than the first predetermined air pressure value, so as to avoid missetting the corresponding air pressure range and causing damage to the air pump. Furthermore, in the first power supply mode, all available power from the cigarette lighter interface is concentrated on the pump core to optimize inflation efficiency within the first air pressure range and ensure a shorter inflation time. Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An air pump with dual power supply modes, characterized in that, include: Pump core, used to generate compressed air; Cigarette lighter interface for connecting to the cigarette lighter of an external vehicle to provide operating power in the first power supply mode; Built-in battery cell for providing operating power to the pump core in a second power supply mode; The power management module is electrically connected to the built-in battery cell and the cigarette lighter interface, and is used to detect the current power source and switch to the corresponding power supply mode. The control unit, connected to the power management module and the pump core via signal connection, is configured to: When the power management module detects that the cigarette lighter interface is connected, it identifies it as the first power supply mode and controls the air pump to only operate within a preset first air pressure range, wherein the upper limit of the first air pressure range does not exceed a first predetermined air pressure value. When the power management module does not detect the cigarette lighter interface being connected, it identifies it as the second power supply mode and controls the air pump to operate within a preset second air pressure range, wherein the upper limit of the second air pressure range is greater than the first predetermined air pressure value.

2. The air pump with dual power supply modes as described in claim 1, characterized in that, The first predetermined air pressure value is 40 PSI, the first air pressure range is 0-40 PSI, and the second air pressure range is 0-160 PSI.

3. An air pump with dual power supply modes as described in claim 2, characterized in that, It also includes a user interface, which is signal-connected to the control unit; in the first power supply mode, the control unit controls the user interface to display only the setting options related to the first air pressure range, and disables the options related to air pressure settings higher than the first predetermined air pressure value; In the second power supply mode, the control unit controls the user interface to display all setting options related to the second air pressure range.

4. An air pump with dual power supply modes as described in claim 1, characterized in that, In the first power supply mode, the power management module and / or control unit allocates all available power from the cigarette lighter interface to the pump core for operation within the first gas pressure range; wherein, the total available power is approximately 120W.

5. An air pump with dual power supply modes as described in claim 1, characterized in that, The discharge power of the built-in battery cell is greater than the power provided by the cigarette lighter interface in the first power supply mode.

6. The air pump control method according to any one of claims 1-5, characterized in that, Includes the following steps: The power management module detects the current power source; If the power management module detects that the power source is the cigarette lighter interface, it enters the first power supply mode, and the working air pressure of the air pump is within the first air pressure range. If the power management module does not detect a cigarette lighter interface connection, it enters the second power supply mode, and the working air pressure of the air pump is within the first air pressure range and / or the second air pressure range.

7. The air pump control method as described in claim 6, characterized in that, In the first power supply mode, the method further includes: providing only an operation interface related to the first air pressure range on the user interface, and hiding or disabling functions related to air pressure settings higher than the first predetermined air pressure value.

8. The air pump control method as described in claim 6, characterized in that, In the first power supply mode, all available power from the cigarette lighter interface is concentrated on the pump core to optimize inflation efficiency within the first pressure range.

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