An inflator pump

Abstract

The utility model discloses an inflation pump, including inflation pump unit and TYPE C power supply control box, both electric connection. TYPE C power supply control box is connected with external power supply equipment through TYPE C interface, built -in communication module and with power control module who links to each other of communication module. Communication module identifies external equipment voltage, obtains adaptive voltage and realizes power limit, power control module monitors inflation pump power, and cut off power supply when overrunning, realizes power limit. TYPE C power supply control box connects inflation pump unit through the soft line, saves the cost, can be compatible with the TYPE C interface of car, mobile phone and notebook computer etc. Switch control motor starts, is applicable to multiple scenes.

Description

Technical Field

[0001] This utility model relates to an air pump. Background Technology

[0002] Air pumps, as common inflation tools, are widely used for inflating tires of cars, motorcycles, and bicycles, as well as items like balls and rubber boats. Traditional air pumps face several limitations in terms of power supply. Common car air pumps often draw power from the vehicle's 12V cigarette lighter socket, limiting their usability. When the cigarette lighter socket malfunctions or in environments without vehicle power, such as outdoor camping, the air pump cannot operate. Some household air pumps use AC mains power, requiring a wall outlet, and are limited by the length of the power cord, resulting in poor flexibility. With the widespread adoption of the Type-C interface in various electronic devices, it offers advantages such as strong power supply capability and good interface compatibility. However, currently, there is a lack of air pump products on the market that fully utilize the characteristics of the Type-C interface to achieve multi-scenario power supply. Furthermore, existing air pumps are often limited in their power adaptation and voltage recognition, unable to automatically adjust their operating status according to the power limits of different power supplies, easily causing damage due to overload, and struggling to be compatible with various power output specifications, leading to inconvenience in use.

[0003] It should be noted that the information disclosed in the background section above is only for understanding the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0004] The main objective of this invention is to overcome the deficiencies in the aforementioned background technology and provide an air pump.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An air pump, comprising:

[0007] An air pump unit is used to perform the inflation action;

[0008] The TYPE-C power supply control box is electrically connected to the air pump unit and is connected to an external power supply device via a TYPE-C interface;

[0009] The TYPE-C power supply control box is equipped with a communication module and a power control module connected to the communication module. The communication module is used to obtain the power supply from the TYPE-C interface of the external power supply device. Pressure, to limit the power, the power The control module is used to monitor the power of the air pump unit. Power supply is cut off when the power of the air pump unit exceeds the maximum power of the external power supply equipment.

[0010] The TYPE-C power supply control box includes a housing and a PCBA disposed in the housing. The PCBA integrates the TYPE-C interface, the communication module, and the power control module. The tail end of the TYPE-C power supply control box is electrically connected to the air pump unit via a flexible wire.

[0011] Furthermore, the power control module is connected to a sampling resistor via an ADC channel, and the sampling resistor is electrically connected to the air pump unit to achieve real-time monitoring of the voltage of the air pump unit.

[0012] Furthermore, the communication module connects a resistor via a pin to set the maximum requested voltage.

[0013] Furthermore, the ADC input terminal of the power control module is electrically connected to the sampling resistor to use current to perform a shutdown operation when the actual power of the air pump unit exceeds the power of the external power supply equipment.

[0014] Furthermore, the flexible cable consists of two conductors, namely the P+ conductor and the P- conductor; the P- conductor is used to transmit the power supply current and connect in series with the sampling resistor, so that the power control module can monitor the power in real time; the P+ conductor is connected to the power output terminal of the TYPE-C power supply control box PCB to form a current loop and provide a voltage reference.

[0015] Furthermore, it also includes a switch for controlling the start of the motor in the air pump unit, the switch being a mechanical switch or a touch switch.

[0016] Furthermore, the communication module is a communication module compatible with mobile phone / laptop chargers.

[0017] Furthermore, the internal circuitry of the TYPE-C power supply control box includes:

[0018] The PD protocol communication circuit is used to negotiate and communicate with external power supply equipment, obtain power supply capacity information, and dynamically set the output voltage level.

[0019] A power identification and voltage control circuit is used to monitor the operating power of the air pump unit in real time and cut off the power supply when the power exceeds the limit;

[0020] A regulated power supply circuit is used to provide operating voltage for various functional circuits;

[0021] Power output control circuit, used to assist power matching and execute power output;

[0022] Test interface circuit, used to connect external debugging equipment and update system programs.

[0023] The present invention has the following beneficial effects:

[0024] Multi-scenario power supply compatibility: Connects to external power supply devices via TYPE-C interface, compatible with various devices with TYPE-C interface such as car chargers, mobile phone chargers, and laptop chargers. This breaks the limitations of traditional air pump power supply scenarios, making it easy to use whether for emergency air inflation in a car, powering the air pump at home using a mobile phone charger, or using a laptop power supply outdoors. This greatly improves the convenience and flexibility of use.

[0025] Safe power adaptation: The TYPE-C power supply control box features a built-in communication module and power control module, providing dual protection for power adaptation. The communication module sets a maximum requested voltage to avoid drawing excessive power from external power supply equipment; the power control module monitors the power of the air pump unit in real time, and immediately cuts off the power supply if it exceeds the power limit of the external power supply equipment, effectively preventing damage to the power supply equipment and the air pump itself due to overload, extending the service life of the equipment, and improving operational safety.

[0026] Highly efficient and stable circuit design: The TYPE-C power supply control box's PCBA integrates multiple functional modules. The flexible cable uses a two-wire design, along with components such as sampling resistors and energy storage capacitors, ensuring stable power supply while reducing costs and simplifying cable connections. It features high voltage and high current carrying capacity, ensuring stable operation under various working conditions. The energy storage capacitor acts as a buffer during voltage switching, maintaining power supply stability and ensuring the continuous operation of the air pump.

[0027] Other beneficial effects of the embodiments of this utility model will be further described below. Attached Figure Description

[0028] Figure 1 A schematic diagram of an air pump that powers the TYPE-C interface in an embodiment of this utility model.

[0029] Figure 2 This is a schematic diagram of the TYPE-C power supply control box according to an embodiment of the present utility model.

[0030] Figure 3 This is a schematic diagram of the module structure of an embodiment of the present utility model.

[0031] Figure 4 This is a circuit diagram for power identification and voltage control according to an embodiment of the present invention.

[0032] Figure 5 This is a circuit diagram of a regulated power supply according to an embodiment of the present invention.

[0033] Figure 6 This is a communication circuit diagram of an embodiment of the present utility model.

[0034] Figure 7This is a power output control circuit diagram according to an embodiment of the present invention.

[0035] Figure 8 This is a circuit diagram of the test interface of an embodiment of the present invention. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. It should be emphasized that the following description is merely exemplary and not intended to limit the scope and application of this utility model.

[0037] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to that other component. Furthermore, a connection can be used for fixing, coupling, or communication.

[0038] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0039] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] See Figures 1 to 3This utility model provides an air pump, including: an air pump unit 4 for performing inflation; and a TYPE-C power supply control box 1 electrically connected to the air pump unit 4 via a flexible cable 3 and connected to an external power supply device via a TYPE-C interface. The TYPE-C power supply control box 1 integrates circuit components, a communication module, and a power control module. The communication module identifies the power supply voltage of the TYPE-C interface 2 of the external power supply device, and the power control module monitors the power of the air pump unit 4. The communication module communicates with the external power supply device to obtain an adaptive voltage for power limiting, and the power control module cuts off the power supply when it detects that the power of the air pump unit 4 exceeds the maximum power of the external power supply device, thus achieving power control. The TYPE-C power supply control box 1 includes a housing 6 and a PCBA 7 disposed within the housing 6. The PCBA 7 integrates the TYPE-C interface 2, the communication module, and the power control module. The tail end of the TYPE-C power supply control box 1 is electrically connected to the air pump unit 4 via a flexible cable 3.

[0041] In some embodiments, the power control module is connected to a sampling resistor via an ADC channel, and the sampling resistor is electrically connected to the air pump unit 4 to achieve real-time monitoring of the voltage of the air pump unit 4.

[0042] In some embodiments, the communication module connects a resistor via a pin to set the maximum requested voltage, thereby achieving power limiting.

[0043] In some embodiments, the ADC input terminal of the power control module is electrically connected to the sampling resistor. By processing the current conversion signal of the sampling resistor, a shutdown operation is performed when the actual power of the air pump unit 4 exceeds the power of the external power supply equipment, thereby achieving power control.

[0044] See Figures 1 to 2 In some embodiments, the flexible wire 3 consists of two wires, namely the P+ wire and the P- wire; the P- wire is used to transmit the power supply current and connect in series with the sampling resistor so that the power control module can monitor the power in real time; the P+ wire is connected to the power output terminal of the TYPE-C power supply control box 1 PCB to form a current loop and provide a voltage reference.

[0045] See Figure 1 In some embodiments, a switch 5 is included for controlling the start of the motor in the air pump unit 4, the switch 5 being a mechanical switch or a touch switch.

[0046] In some embodiments, the communication module is a protocol communication module compatible with mobile phone / laptop chargers.

[0047] In some embodiments, the internal circuitry of the TYPE-C power supply control box specifically includes:

[0048] Figure 4 The power identification and voltage control circuit shown is based on a microcontroller. Its ADC input pin is connected to a sampling resistor R2 to monitor the operating current of the air pump unit in real time, achieving dynamic power acquisition by converting the current into a voltage signal. Simultaneously, the microcontroller controls the conduction state of the MOSFET switch Q2 via its PWM output pin. Combined with the signal conditioning network consisting of resistors R4-R9, a complete power control closed loop is formed: when the ADC detects an over-limit power, the PWM immediately outputs a low level to turn off Q2, cutting off the power supply to perform hardware-level overload protection.

[0049] Figure 5 The voltage regulator circuit shown uses a voltage regulator chip as its core. The input side receives a 5V-20V voltage via VBUS. After the input filter capacitor C6 eliminates power ripple, a stable 5V DC is output by the step-down module. Output filter capacitors C3 and C7 further purify voltage fluctuations, providing a clean power supply for the microcontroller and ensuring stable operation of the control logic.

[0050] Figure 6 The PD protocol communication circuit shown uses a protocol chip as the control center and communicates with external devices via the CC1 / CC2 pins using the USB PD protocol. The chip obtains a list of PDOs (including 5V / 9V / 15V / 20V levels) and dynamically negotiates and adapts the output voltage. To handle instantaneous fluctuations during voltage switching, 220μF energy storage capacitors EC1 / EC2 are connected in parallel to the VBUS bus for energy buffering. These, along with voltage divider resistor R3 and filter capacitor C1, form an anti-interference communication link.

[0051] Figure 7 The power output control circuit shown integrates a 100W PD 3.1 protocol controller module and a TYPE-C physical interface J1. This module receives voltage adjustment commands from the protocol chip and dynamically outputs a wide voltage range of 5V-48V, delivering up to 100W of power to the air pump unit via the VBUS pin. The CC pin is used to transmit protocol signals. The power output control circuit also uses an electronic tag chip to identify cable specifications to assist in power matching.

[0052] Figure 8 The test interface circuit shown features a four-pin test interface J1 (including VCC, GND, and T0-T2 signal lines) and an ISP programming interface. The T0-T2 pins support connection to external test equipment for system diagnostics, while the ISP interface is used for microcontroller firmware burning and debugging, providing a hardware foundation for production testing and subsequent maintenance.

[0053] The power identification and voltage control circuit, together with the power output control circuit, forms the power control module. The PD protocol communication circuit acts as the protocol communication module.

[0054] This invention achieves dual protection for the air pump by utilizing the collaborative operation of the TYPE-C power supply control box's TYPE-C interface, communication module, and power control module. This ensures multi-scenario power supply compatibility and safe power adaptation. Firstly, the universality of the TYPE-C interface allows compatibility with diverse power sources such as car chargers, mobile phone chargers, and laptops, completely eliminating the reliance of traditional air pumps on cigarette lighter sockets or fixed outlets, significantly improving the flexibility of use in scenarios without stable power, such as outdoor camping. Secondly, it dynamically acquires the voltage level of the power supply device for power limiting, and monitors the power in real time, cutting off the power supply within milliseconds when the limit is exceeded. This dual protection mechanism matches the power limits of different power supply devices, preventing overload damage and solving the problems of single power adaptation and poor compatibility in existing products, filling the market gap for safe and intelligent TYPE-C air pumps.

[0055] The following further describes specific embodiments of this utility model.

[0056] Figure 1 An air pump is shown, including an air pump unit 4 and a TYPE-C power supply control box 1, which are electrically connected via a flexible cable 3. (Reference) Figure 2 The TYPE-C power supply control box 1 has a PCBA 7 inside its housing 6. The PCBA 7 integrates a TYPE-C interface 2, an MCU main control chip, a PD protocol chip, an electronic tag chip, and a voltage regulator chip. These chips are connected via circuitry for protocol communication, power control, cable identification, and voltage regulation, collectively realizing the various functions of the TYPE-C power supply control box 1. The housing 6 protects the internal PCBA 7 and chips, exposing only the TYPE-C interface 2 for connection to external devices. (Reference) Figure 3 The overall structure diagram shows that the tail end of the TYPE-C power supply control box 1 is electrically connected to the air pump unit 4 via two flexible wires. These flexible wires are connected to the P+ and P- terminals on the right side of the TYPE-C power supply control box 1 using a plug-in method, and the connection part is wrapped by the ABS shell of the TYPE-C power supply control box 1. This method of connection via two flexible wires replaces the traditional solution of using 3-core or 5-core wires for charging cables, which can maximize cost savings.

[0057] When the TYPE-C power supply control box 1 is connected to an external power supply device via the TYPE-C interface 2, the protocol communication module uses a protocol chip to achieve automatic communication via the USB PD protocol. This chip detects the SourceCapabilities message of the external power supply device via CC1. This message contains a list of PDOs (Power Dots) to identify the voltage level of the external power supply device, including 5V, 9V, 15V, and 20V, to obtain the voltage required to power the air pump unit 4. Simultaneously, the protocol chip connects to resistor R1 via the SEL pin, setting its maximum requested voltage to 20V, thus achieving power limiting.

[0058] The power control module operates through an MCU chip. The voltage sampling input point of PCBA 7 is electrically connected to the air pump unit 4. The ADC channel of the MCU chip is connected to a sampling resistor. Specifically, the chip is electrically connected to the sampling resistor through a pin (ADC input terminal). The sampling resistor converts the current into a voltage signal, which is then processed by the MCU. Processing, implementation Real-time voltage monitoring of air pump unit 4. When the actual power of air pump unit 4 exceeds the power of the external power supply, the MCU chip outputs a low level through the PWM pin to turn off the MOSFET (such as Q2) and execute a shutdown operation (see reference). Figure 4 The circuit diagram for power identification and voltage control is used to achieve power control. In addition, the MCU chip is also used to implement the real-time monitoring function of the motor voltage via the ADC channel.

[0059] The flexible cable consists of two wires, a P+ wire and a P- wire. The P- wire transmits the power supply current while being connected in series with a sampling resistor, allowing the power control module to monitor the power in real time. The P+ wire is connected to the power output terminal of the TYPE-C power supply control box 1 PCB, forming both a current loop and providing a voltage reference.

[0060] The air pump is controlled by a switch to start the motor in air pump unit 4 (the connection relationship can be found in the reference). Figure 3 (The connection between the switch and the air pump unit 4 in the overall structural diagram) This switch can be a mechanical switch or a touch switch.

[0061] The TYPE-C power supply control box 1 can connect not only to the TYPE-C interface 2 in a car, but also to chargers for mobile phones, laptops, etc., to power the air pump unit 4, achieving dual-use functionality for both home and vehicle use. When different chargers are connected, the protocol chip detects the charger and matches the appropriate power output to the air pump unit 4. For example, when connecting a mobile phone charger (usually 5V / 9V PDO), the chip requests 5V / 3A (15W) power, and when connecting a computer charger that supports 20V PDO, it requests 20V / 5A (100W) power.

[0062] The MOSFETs (such as Q1DC005NG B) used in the circuit components of the TYPE-C power supply control box 1 have a drain-source breakdown voltage of not less than 100V and a continuous drain current of not less than 10A, which can meet the power requirements of 100W. At the same time, the circuit is also equipped with 220V electrolytic capacitors (EC1 / EC2). These capacitors can play an energy storage and buffering role when the voltage switches from 5V to 20V, etc., to avoid power failure and ensure the stability of power supply.

[0063] The above description, in conjunction with specific / preferred embodiments, provides a further detailed explanation of the present invention and should not be construed as limiting the specific implementation of the present invention to these descriptions. For those skilled in the art, various substitutions or modifications can be made to these described embodiments without departing from the concept of the present invention, and all such substitutions or modifications should be considered within the protection scope of the present invention. In the description of this specification, the reference to terms such as "an embodiment," "some embodiments," "preferred embodiment," "example," "specific example," or "some examples," etc., indicates that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present invention. The illustrative table of the above terms in the manual. The description does not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of those different embodiments or examples. Although embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions, and modifications may be made herein without departing from the scope of protection of the patent application.

Claims

1. An air pump, characterized in that, include: An air pump unit is used to perform the inflation action; The TYPE-C power supply control box is electrically connected to the air pump unit and is connected to an external power supply device via a TYPE-C interface; The TYPE-C power supply control box is equipped with a communication module and a power control module connected to the communication module. The communication module is used to obtain the power supply voltage of the TYPE-C interface of the external power supply device for power limiting. The power control module is used to monitor the power of the air pump unit and cut off the power supply when the power of the air pump unit exceeds the maximum power of the external power supply device. The TYPE-C power supply control box includes a housing and a PCBA disposed in the housing. The PCBA integrates the TYPE-C interface, the communication module, and the power control module. The tail end of the TYPE-C power supply control box is electrically connected to the air pump unit via a flexible wire.

2. The air pump according to claim 1, characterized in that, The power control module is connected to a sampling resistor via an ADC channel. The sampling resistor is electrically connected to the air pump unit to enable real-time monitoring of the voltage of the air pump unit.

3. The air pump according to claim 1, characterized in that, The communication module connects a resistor via a pin to set the maximum requested voltage.

4. The air pump according to claim 1, characterized in that, The ADC input terminal of the power control module is electrically connected to the sampling resistor and is used to use current to perform a shutdown operation when the actual power of the air pump unit exceeds the power of the external power supply equipment.

5. The air pump according to claim 1, characterized in that, The flexible cable consists of two conductors, namely the P+ conductor and the P- conductor; the P- conductor is used to transmit the power supply current and connect in series with the sampling resistor so that the power control module can monitor the power in real time; the P+ conductor is connected to the power output terminal of the TYPE-C power supply control box, forming a current loop and providing a voltage reference.

6. The air pump according to claim 1, characterized in that, Includes a switch for controlling the start of the motor in the air pump unit, the switch being a mechanical switch or a touch switch.

7. The air pump according to claim 1, characterized in that, The communication module is compatible with mobile phone / laptop chargers.

8. The air pump according to claim 1, characterized in that, The internal circuitry of the TYPE-C power supply control box includes: The PD protocol communication circuit is used to negotiate and communicate with external power supply equipment, obtain power supply capacity information, and dynamically set the output voltage level. A power identification and voltage control circuit is used to monitor the operating power of the air pump unit in real time and cut off the power supply when the power exceeds the limit; A regulated power supply circuit is used to provide operating voltage for various functional circuits; Power output control circuit, used to assist power matching and execute power output; Test interface circuit, used to connect external debugging equipment and update system programs.

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