Inflatable device

Abstract

This application discloses an inflation device. The inflation device includes an inflation mechanism, a controller, a solenoid valve assembly, a solenoid valve drive circuit, and a motor drive circuit. The inflation mechanism includes an air path assembly and an air pump body. The air pump body includes a motor. The solenoid valve drive circuit is controlled by the controller to adjust the working state of the solenoid valve assembly to change the air path state of the air path assembly. The motor drive circuit is controlled by the controller to drive the motor to drive the gas to flow on the air path assembly. This application embodiment only needs to control the solenoid valve assembly to control the inflation device to achieve any of the functions of inflation, deflation, and evacuation. It eliminates the need for the inflation device to have multiple gas inlets to achieve the above multiple functions, and also eliminates the need for the user to manually switch the inflation device to the corresponding gas inlet to achieve any functional state, avoiding the trouble caused by switching gas inlets.

Description

Technical Field

[0001] This application relates to the technical field of inflatable devices, specifically to an inflatable device. Background Technology

[0002] Inflation equipment can inflate, deflate, or deflate user equipment. Typically, existing inflation equipment has multiple air ports, each serving a different function. When a user needs the equipment to inflate, the inflation port connects to the equipment's gas inlet / outlet, allowing the equipment to fill with gas. When a user needs the equipment to deflate, the deflator port connects to the equipment's gas inlet / outlet, removing the internal gas. Therefore, users need to frequently and manually change the air port positions, making the operation cumbersome and negatively impacting the user experience. Summary of the Invention

[0003] To address the aforementioned technical problems, this application provides an inflation device that improves upon the technical issue of requiring cumbersome user intervention when existing inflation devices perform inflation, deflation, and air removal functions.

[0004] In a first aspect, embodiments of this application provide an inflation device, including an inflation mechanism, a controller, a solenoid valve assembly, a solenoid valve drive circuit, and a motor drive circuit. The inflation mechanism includes an air passage assembly and an air pump body. The air pump body is connected to the air passage assembly and is used to inflate gas into the air passage assembly or extract or release gas flowing through the air passage assembly. The air pump body includes a motor. The solenoid valve assembly is mounted on the air passage assembly. The solenoid valve drive circuit is electrically connected to both the solenoid valve assembly and the controller, and is controlled by the controller to adjust the operating state of the solenoid valve assembly to change the air passage state of the air passage assembly. The motor drive circuit is electrically connected to both the motor and the controller, and is controlled by the controller to control the motor to drive gas to flow through the air passage assembly.

[0005] Optionally, the solenoid valve assembly includes a first solenoid valve and a second solenoid valve, both of which are electrically connected to the solenoid valve drive circuit. When the controller controls the solenoid valve drive circuit to drive the first and second solenoid valves to a first-type state, the air path state of the air path assembly is an inflated state. When the controller controls the solenoid valve drive circuit to drive the first and second solenoid valves to a second-type state, the air path state of the air path assembly is a evacuation state or a deflation state.

[0006] Optionally, the solenoid valve drive circuit includes a first switching transistor, which is electrically connected to the first solenoid valve, the second solenoid valve, and the controller, respectively. The first switching transistor is used to respond to a first control signal from the controller to enter a conducting state so that a first driving current flows through the first solenoid valve and the second solenoid valve, or to respond to a second control signal from the controller to enter a cut-off state so that the first driving current stops flowing through the first solenoid valve and the second solenoid valve.

[0007] Optionally, the first switching transistor is a first NMOS transistor, and the solenoid valve driving circuit further includes a first resistor and a first diode. The gate of the first NMOS transistor is electrically connected to the controller and the first terminal of the first resistor, respectively. The second terminal of the first resistor is grounded, and the source of the first NMOS transistor is grounded. The cathode of the first diode, the anode of the first solenoid valve, and the anode of the second solenoid valve are all applied with a driving voltage. The anode of the first diode, the cathode of the first solenoid valve, and the cathode of the second solenoid valve are all electrically connected to the drain of the first NMOS transistor.

[0008] Optionally, the motor drive circuit includes a second switching transistor, which is electrically connected to both the motor and the controller. The second switching transistor is used to respond to a first motor signal from the controller, enter an on state to control the motor to work, or respond to a second motor signal from the controller, enter an off state to control the motor to stop working.

[0009] Optionally, the second switching transistor is a second NMOS transistor, and the motor drive circuit further includes a second resistor and a second diode. The gate of the second NMOS transistor is electrically connected to the controller and the first terminal of the second resistor, respectively. The second terminal of the second resistor is grounded, the source of the second NMOS transistor is grounded, and the second diode is connected in parallel with the motor and then electrically connected to the drain of the second NMOS transistor.

[0010] Optionally, the inflation device further includes a battery and a boost circuit. The boost circuit is electrically connected to the battery, the solenoid valve drive circuit, and the motor drive circuit, respectively, and is used to boost the voltage of the battery to obtain a drive voltage.

[0011] Optionally, the inflation device further includes a pressure sensor and / or a first temperature sampling circuit and / or a button circuit and / or a display circuit and / or a lighting circuit. The pressure sensor is mounted on the inflation assembly and electrically connected to the controller. The first temperature sampling circuit is electrically connected to the controller and is used to sample the operating temperature of the battery. The button circuit is electrically connected to the controller. The display circuit is electrically connected to the controller. The lighting circuit is electrically connected to the controller.

[0012] Optionally, the inflation device further includes a low-dropout linear regulator and a power consumption control circuit. The low-dropout linear regulator is electrically connected to the air pressure sensor, and the power consumption control circuit is electrically connected between the battery and the low-dropout linear regulator and also electrically connected to the controller. It is used to establish or disconnect the power supply circuit between the battery and the low-dropout linear regulator under the control of the controller.

[0013] Optionally, the power consumption control circuit includes a first diode, a second diode, a third resistor, and a first PMOS transistor. A first voltage is applied to the anode of the first diode. The cathode of the first diode is electrically connected to the cathode of the second diode, the first terminal of the third resistor, the source of the first PMOS transistor, and the power supply pin of the controller. The anode of the second diode is electrically connected to the positive terminal of the battery. The second terminal of the third resistor and the gate of the first PMOS transistor are both electrically connected to the controller. The drain of the first PMOS transistor is electrically connected to the low-dropout linear regulator.

[0014] This embodiment of the application, by installing a solenoid valve assembly on the gas circuit component, only needs to control the working state of the solenoid valve assembly to control the inflation device to achieve any of the functions of inflation, deflating, and deflation. It eliminates the need for the inflation device to have multiple gas inlets to achieve the functions of inflation, deflating, and deflation, and also eliminates the need for the user to manually operate the inflation device to switch to the corresponding gas inlet when it is working in any of the inflation, deflating, and deflation states. This avoids the trouble caused by switching gas inlets and improves the user experience. Attached Figure Description

[0015] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0016] Figure 1 This is a schematic diagram of the circuit structure of an inflation device provided in an embodiment of this application;

[0017] Figure 2 A circuit structure diagram of an inflation device provided in another embodiment of this application;

[0018] Figure 3a A schematic diagram of gas flow in inflation mode for an inflation device provided in an embodiment of this application;

[0019] Figure 3b A schematic diagram of gas flow in an inflation device in either a suction or deflation mode, provided in an embodiment of this application.

[0020] Figure 4 A circuit structure diagram of an inflation device provided in another embodiment of this application;

[0021] Figure 5 for Figure 4 The diagram shows the specific circuit structure of the solenoid valve drive circuit.

[0022] Figure 6 A circuit structure diagram of an inflation device provided in another embodiment of this application;

[0023] Figure 7 for Figure 6 The diagram shows the specific circuit structure of the motor drive circuit.

[0024] Figure 8 A circuit structure diagram of an inflation device provided in another embodiment of this application;

[0025] Figure 9 A circuit structure diagram of an inflation device provided in another embodiment of this application;

[0026] Figure 10a for Figure 9 The schematic diagram of the specific circuit structure of the controller chip is shown.

[0027] Figure 10b for Figure 9 The diagram shows the specific circuit structure of the charging chip.

[0028] Figure 11 for Figure 9 The diagram shows the specific circuit structure of the power detection circuit.

[0029] Figure 12 A circuit structure diagram of an inflation device provided in another embodiment of this application;

[0030] Figure 13 for Figure 12 The schematic diagram of the specific circuit structure of the current sampling circuit shown is as follows;

[0031] Figure 14 for Figure 12 The schematic diagram of the specific circuit structure of the current amplifier circuit shown is as follows:

[0032] Figure 15 A circuit structure diagram of an inflation device provided in another embodiment of this application;

[0033] Figure 16 for Figure 15 The diagram shows the specific circuit structure of the battery protection circuit.

[0034] Figure 17 A circuit structure diagram of an inflation device provided in another embodiment of this application;

[0035] Figure 18 for Figure 8 The diagram shows the specific circuit structure of the charging interface circuit.

[0036] Figure 19 for Figure 8 The schematic diagram of the specific circuit structure of the charging detection circuit is shown below.

[0037] Figure 20 A circuit structure diagram of an inflation device provided in another embodiment of this application;

[0038] Figure 21 for Figure 20 The schematic diagram of the specific circuit structure of the boost circuit shown is as follows;

[0039] Figure 22 A circuit structure diagram of an inflation device provided in another embodiment of this application;

[0040] Figure 23 for Figure 22 The diagram shows the specific circuit structure of the barometric pressure sensor.

[0041] Figure 24 for Figure 22 A schematic diagram of the specific circuit structure of the first temperature sampling circuit is shown below.

[0042] Figure 25 for Figure 22 The diagram shows the specific circuit structure of the lighting circuit.

[0043] Figure 26 for Figure 22 The diagram shows the specific circuit structure of the low dropout linear regulator and power consumption control circuit.

[0044] Figure 27 A circuit structure diagram of an inflation device provided in another embodiment of this application;

[0045] Figure 28 for Figure 27 The circuit diagram shown is a detailed circuit structure diagram of the reset button circuit.

[0046] Figure 29 for Figure 27 The schematic diagram of the specific circuit structure of the lighting button circuit shown is as follows;

[0047] Figure 30 A circuit structure diagram of an inflation device provided in another embodiment of this application;

[0048] Figure 31 for Figure 30 The diagram shows the specific circuit structure of the display driver chip.

[0049] Figure 32 for Figure 30 The schematic diagram shows the specific circuit structure of the light-emitting diode array.

[0050] Figure 33 for Figure 30 The schematic diagram of the specific circuit structure of the adjustment button circuit is shown below.

[0051] Figure 34 for Figure 22 The diagram shows the specific circuit structure of the power supply circuit for the display. Detailed Implementation

[0052] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "electrically connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "bottom," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0053] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items. Furthermore, technical features involved in the different embodiments of this application described below may be combined with each other as long as they do not conflict with each other.

[0054] The following embodiments of this application provide an inflation device. Please refer to... Figure 1 The inflation device 10 includes an inflation mechanism 20, a solenoid valve assembly 30, a solenoid valve drive circuit 40, a motor drive circuit 50, and a controller 60.

[0055] The inflation mechanism 20 has inflation, de-inflation and deflation functions, and can inflate gas into user equipment 70, or de-inflate gas inside user equipment 70, or deflate gas inside user equipment 70.

[0056] The inflation mechanism 20 includes an air passage assembly 21 and an air pump body 22. The air pump body 22 is connected to the air passage assembly 21 and is used to inflate the air passage assembly 21 or extract or release the gas flowing through the air passage assembly 22. The air pump body 22 also includes a motor 221.

[0057] The solenoid valve assembly 30 is mounted on the pneumatic circuit assembly 21.

[0058] The solenoid valve drive circuit 40 is electrically connected to both the solenoid valve assembly 30 and the controller 60. It is controlled by the controller 60 to adjust the operating state of the solenoid valve assembly 30 to change the gas path state of the gas path assembly 21. The gas state includes a filling state, a evacuation state, or a deflation state. The filling state refers to the filling device 10 filling the user equipment 70 with gas. The evacuation state refers to the filling device 10 evacuating the internal gas of the user equipment 70. The deflation state refers to the filling device 10 releasing the internal gas of the user equipment 70 into the atmospheric environment.

[0059] The motor drive circuit 50 is electrically connected to both the motor 221 and the controller 60, and is controlled by the controller 60 to drive the motor 221 to drive the gas to flow through the gas path assembly 21. When the gas flows through the gas path assembly 21, the working state of the solenoid valve assembly 30 is adjusted by the solenoid valve drive circuit 40 to change the gas path state of the gas path assembly 21. When the gas path assembly 21 is in different gas path states, the flowing gas will exhibit different flow directions. For example, the flowing gas is injected into the user equipment 70 to realize the inflation function, or the flowing gas flows out of the user equipment 70 to realize the evacuation function or the deflation function.

[0060] In this embodiment, by installing a solenoid valve assembly 30 on the gas circuit assembly 21, the inflation device 10 can be controlled to perform any of the functions of inflation, deflating, and deflation simply by controlling the working state of the solenoid valve assembly 30. This eliminates the need for the inflation device to have multiple gas inlets to perform these functions, and also eliminates the need for the user to manually switch the inflation device to the corresponding gas inlet when it is in any of the inflation, deflating, or deflation states. This avoids the inconvenience of switching gas inlets and improves the user experience.

[0061] Please see Figure 2The solenoid valve assembly 30 includes a first solenoid valve 31 and a second solenoid valve 32. Both the first solenoid valve 31 and the second solenoid valve 32 are mounted on the pneumatic circuit assembly 21. Both the first solenoid valve 31 and the second solenoid valve 32 are electrically connected to the solenoid valve drive circuit 40. The controller 60 controls the working state of the solenoid valve drive circuit 40 to control the working state of the first solenoid valve 31 and the second solenoid valve 32.

[0062] Specifically, when the controller 60 controls the solenoid valve drive circuit 40 to drive the first solenoid valve 31 and the second solenoid valve 32 to the first type of state, the air path state of the air path assembly 21 is the charging state. When the controller 60 controls the solenoid valve drive circuit 40 to drive the first solenoid valve 31 and the second solenoid valve 32 to the second type of state, the air path state of the air path assembly 21 is the suction state or the degassing state.

[0063] Please see Figure 3a and Figure 3b The inflation mechanism 20 has a first cavity 201 and a second cavity 202. The air passage assembly 21 includes a first air passage 211, a second air passage 212, a third air passage 213, a fourth air passage 214, a fifth air passage 215, and a sixth air passage 216. The air pump body 22 also includes a gas inlet 222 and a gas outlet 223. The motor 221 provides power to the inflation mechanism 20 so that gas enters the gas inlet 222 and is then output through the gas outlet 223.

[0064] One end of the first air passage 211 is connected to the first side of the first cavity 201, and the other end of the first air passage 211 is connected to the external atmospheric environment.

[0065] One end of the second gas passage 212 is connected to the second side of the first cavity 201, the first side of the first cavity 201 is arranged opposite to the second side, and the other end of the second gas passage 212 is connected to the gas outlet 223.

[0066] One end of the third gas passage 213 is connected to the second side of the first cavity 201, and the other end of the third gas passage 213 is connected to the gas inlet and outlet of the user equipment 70.

[0067] The first solenoid valve 31 is disposed in the first cavity 201. Under normal conditions, the first solenoid valve 31 closes the inlet between the first cavity 201 and the first gas passage 211, but connects the second gas passage 212 and the third gas passage 213. That is, under normal conditions, due to the obstruction of the first solenoid valve 31, the gas will not flow into the first gas passage 211 through the first side of the first cavity 201 and then be output to the atmospheric environment. However, the gas output through the gas outlet 223 can be transmitted to the third gas passage 213 through the second gas passage 212.

[0068] One end of the fourth air passage 214 is connected to the first side of the second cavity 202, and the other end of the fourth air passage 214 is connected to the external atmospheric environment. The second solenoid valve 32 is disposed inside the second cavity 202.

[0069] One end of the fifth gas passage 215 is connected to the second side of the second cavity 202, the first side of the second cavity 202 is arranged opposite to the second side, and the other end of the fifth gas passage 215 is connected to the gas inlet and outlet of the user equipment 70.

[0070] One end of the sixth gas passage 216 is connected to the second side of the second cavity 202, and the other end of the sixth gas passage 216 is connected to the gas inlet 222.

[0071] Under normal conditions, the second solenoid valve 32 closes the inlet between the second cavity 202 and the fifth gas passage 215, but connects the fourth gas passage 214 and the sixth gas passage 216. That is, under normal conditions, due to the obstruction of the second solenoid valve 32, gas will not flow into the fifth gas passage 215 through the second side of the second cavity 202 and then be output to the user equipment 70. However, atmospheric gas can be transmitted to the sixth gas passage 216 through the fourth gas passage 214.

[0072] Based on the air path topology of the air path component 21, the inflation principle, air extraction principle, and air deflation principle of the inflation device 10 are as follows:

[0073] ①Inflation principle:

[0074] The controller 60 controls the solenoid valve drive circuit 40 to drive the first solenoid valve 31 and the second solenoid valve 32 to be in normal state, that is, the first solenoid valve 31 and the second solenoid valve 32 are both in the first type of state.

[0075] Under normal conditions, the first solenoid valve 31 closes the inlet between the first cavity 201 and the first air passage 211, but connects the second air passage 212 and the third air passage 213.

[0076] Under normal conditions, the second solenoid valve 32 closes the inlet between the second cavity 202 and the fifth air passage 215, but connects the fourth air passage 214 and the sixth air passage 216.

[0077] The controller 60 controls the motor drive circuit 50 to drive the motor 221 to work. When the motor 221 is working, the gas in the atmospheric environment flows into the first side of the second cavity 202 through the fourth gas passage 214, and then flows into the sixth gas passage 216, the gas inlet 222, the internal gas passage 217 of the air pump body 22, the second gas passage 212, the second side of the first cavity 201, the third gas passage 213, and the gas inlet and outlet of the user equipment 70 in sequence, thereby realizing the filling of the user equipment 70 with sufficient gas.

[0078] ② Principle of air extraction or air release:

[0079] The controller 60 controls the solenoid valve drive circuit 40 to drive both the first solenoid valve 31 and the second solenoid valve 32 to be in an active state, that is, both the first solenoid valve 31 and the second solenoid valve 32 are in the second type of state.

[0080] When the first solenoid valve 31 is in the activated state, it connects the inlet between the first cavity 201 and the first air passage 211, but disconnects the connection between the second air passage 212 and the third air passage 213.

[0081] When the second solenoid valve 32 is in the activated state, it connects the inlet between the second cavity 202 and the fifth air passage 215, but disconnects the connection between the fourth air passage 214 and the sixth air passage 216.

[0082] In the air extraction mode, the controller 60 controls the motor drive circuit 50 to drive the motor 221 to work. When the motor 221 is working, the internal gas of the user equipment 70 is drawn into the fifth air passage 215 through its gas inlet and outlet, and then sequentially passes through the second side of the first cavity 201, the sixth air passage 216, the gas inlet 222, the internal air passage 217 of the air pump body 22, the gas outlet 223, the second air passage 212, the first side of the first cavity 201, and the first air passage 211, thereby expelling the internal gas of the user equipment 70 from the atmospheric environment.

[0083] In the venting mode, the controller 60 controls the motor drive circuit 50 to stop the motor 221 from operating. The internal gas of the user equipment 70 flows into the fifth gas passage 215 through its gas inlet and outlet, and then sequentially passes through the second side of the first cavity 201, the sixth gas passage 216, the gas inlet 222, the internal gas passage 217 of the air pump body 22, the gas outlet 223, the second gas passage 212, the first side of the first cavity 201, and the first gas passage 211, thereby venting the internal gas of the user equipment 70 to the atmosphere.

[0084] In this embodiment, a first solenoid valve 31 and a second solenoid valve 32 are provided on the air circuit assembly 21. By controlling the first solenoid valve 31 and the second solenoid valve 32 to be in different categories, the air circuit state of the air circuit assembly 21 can be set to an inflation state, an air extraction state, or an air deflation state without manual switching, which is beneficial to improving the working efficiency of the inflation device 10.

[0085] Please see Figure 4 The solenoid valve drive circuit 40 includes a first switching transistor 41, which is electrically connected to the first solenoid valve 31, the second solenoid valve 32 and the controller 60 respectively. The first switching transistor 41 is used to respond to the first control signal of the controller 60, enter the conduction state, so that the first drive current flows through the first solenoid valve 31 and the second solenoid valve 32 respectively, or to respond to the second control signal of the controller 60, enter the cut-off state, so that the first drive current stops flowing through the first solenoid valve 31 and the second solenoid valve 32.

[0086] The first switching transistor 41 includes a transistor, a MOSFET, or other types of electronic switches or relays. The first switching transistor 41 can be an NPN transistor, a PNP transistor, an NMOS transistor, or a PMOS transistor.

[0087] In some embodiments, the first control signal is high and the second control signal is low. In other embodiments, the first control signal is low and the second control signal is high.

[0088] Please see Figure 5 The first switching transistor is a first NMOS transistor Q1. The solenoid valve drive circuit 40 also includes a first resistor R1, a first capacitor C1, and a first diode D1. The gate of the first NMOS transistor Q1 is electrically connected to the controller 60 and the first terminal of the first resistor R1, respectively. The second terminal of the first resistor R1 is grounded, and the source of the first NMOS transistor Q1 is grounded. The cathode of the first diode D1, the first terminal of the first capacitor C1, the anode of the first solenoid valve 31, and the anode of the second solenoid valve 32 are all subject to a driving voltage (e.g., 12V). The anode of the first diode D1, the second terminal of the first capacitor C1, the cathode of the first solenoid valve 31, and the cathode of the second solenoid valve 32 are all electrically connected to the drain of the first NMOS transistor Q1. It is understood that in some embodiments, the first capacitor C1 may be omitted in the solenoid valve drive circuit 40.

[0089] The working principle of the solenoid valve drive circuit 40 is as follows:

[0090] When the inflation device 10 enters the inflation mode, the controller 60 applies a low level to the first NMOS transistor Q1, and the first NMOS transistor Q1 enters the cut-off state. The first drive current will not flow through the first solenoid valve 31 and the second solenoid valve 32. Therefore, the first solenoid valve 31 and the second solenoid valve 32 are both in normal state, and the gas is inflated according to the inflation principle described in the above embodiment, thereby realizing the inflation function.

[0091] When the inflation device 10 enters the air extraction mode or the air release mode, the controller 60 applies a high level to the first NMOS transistor Q1, and the first NMOS transistor Q1 enters the conducting state. The first driving current flows through the first solenoid valve 31 and the second solenoid valve 32. Therefore, both the first solenoid valve 31 and the second solenoid valve 32 are activated, and the gas is pumped according to the air extraction principle or the air release principle described in the above embodiment, thereby realizing the air extraction function or the air release function.

[0092] Please see Figure 6The motor drive circuit 50 includes a second switch 51, which is electrically connected to the motor 221 and the controller 60 respectively. It is used to respond to the first motor signal from the controller 60, enter the on state to control the motor 221 to work, or respond to the second motor signal from the controller 60, enter the off state to control the motor 221 to stop working.

[0093] The second switching transistor 51 includes a transistor, a MOSFET, or other types of electronic switches or relays. The second switching transistor 51 can be an NPN transistor, a PNP transistor, an NMOS transistor, or a PMOS transistor.

[0094] In some embodiments, the first motor signal is high and the second motor signal is low. In other embodiments, the first motor signal is low and the second motor signal is high.

[0095] Please see Figure 7 The second switch 51 is the second NMOS transistor Q2. The motor drive circuit 50 also includes a second resistor R2 and a second diode D2. The gate of the second NMOS transistor Q2 is electrically connected to the controller 60 and the first end of the second resistor R2. The second end of the second resistor R2 is grounded. The source of the second NMOS transistor Q2 is grounded. The second diode D2 is connected in parallel with the motor 221 and then electrically connected to the drain of the second NMOS transistor Q2.

[0096] The working principle of the motor drive circuit 50 is as follows:

[0097] When the inflation device 10 enters the inflation mode, the deflation mode, or the air extraction mode, the controller 60 sends a high level to the gate of the second NMOS transistor Q2, the second NMOS transistor Q2 enters the conduction state, the second drive current flows through the motor 221, and the motor 221 starts to work.

[0098] When the inflation device 10 does not need to work, the controller 60 sends a low level to the gate of the second NMOS transistor Q2, the second NMOS transistor Q2 enters the cut-off state, no second drive current flows through the motor 221, and the motor 221 stops working.

[0099] In some embodiments, please refer to Figure 8 The inflation device 10 also includes a charging circuit 80, a battery 90, a charging interface circuit 100, and a charging detection circuit 110.

[0100] The charging circuit 80 is electrically connected to the controller 60 and is used to charge the inflation device 10 under the control of the controller 60. (See also...) Figure 9 The charging circuit 80 includes a charging chip 81, a power detection circuit 82, and a current detection circuit 83.

[0101] Please see Figure 10a and Figure 10b The charging chip 81 is electrically connected to both the controller 60 and the battery 90, and is used to manage the battery 90, enabling it to charge stably and reliably. The battery 90 is electrically connected to the charging circuit 60, and is used to store power and provide the power required for the inflation device 10 to operate.

[0102] Specifically, the controller 60 sends an enable signal CHARGE_EN to the charging chip 81. The charging chip 81 responds to the enable signal CHARGE_EN and enters the corresponding operating state. When the enable signal CHARGE_EN is high, the charging function of the charging chip 81 is enabled. When the enable signal CHARGE_EN is low, the charging function of the charging chip 81 is disabled.

[0103] The power detection circuit 82 is electrically connected to the battery 90 and the controller 60 respectively, and is used to detect the voltage of the battery 90. The controller 60 generates power display information of the battery 90 based on the voltage of the battery 90. The power display information is used to indicate the power of the battery 90.

[0104] Please see Figure 11 The power detection circuit includes a third resistor R3 and a fourth resistor R4 connected in series. The first end of the third resistor R3 is electrically connected to the battery, the second end of the third resistor R3 is electrically connected to the first end of the fourth resistor R4 and the controller 60, and the second end of the fourth resistor R4 is grounded.

[0105] The voltage between the third resistor R3 and the fourth resistor R4 is the sampling voltage. The controller 60 calculates the battery power of the battery 90 based on the sampling voltage and generates battery power display information based on the battery power of the battery 90.

[0106] The current detection circuit 83 is electrically connected to the battery 90 and the controller 60 respectively, and is used to detect the output current of the battery 90. The output current can be the current flowing through the motor 221, the current flowing through the first solenoid valve and the second solenoid valve, or the sum of the current flowing through the motor 221 and the current flowing through the first solenoid valve and the second solenoid valve, etc.

[0107] Please see Figure 12 The current detection circuit 83 includes a current sampling circuit 831 and a current amplification circuit 832. The current sampling circuit 831 is electrically connected to the battery 90 and is used to sample the output current of the battery 90 to obtain a current sampling signal. The current amplification circuit 832 is electrically connected to the current sampling circuit 831 and the controller 60 and is used to amplify the current sampling signal so that the controller 60 performs current protection operation based on the amplified current sampling signal.

[0108] When the controller 60 detects an abnormality in the output current of the battery 90 based on the amplified current sampling signal, the controller 60 notifies the charging chip 81 to control the battery 90 to stop supplying power to the motor 221. When the controller 60 detects the output current of the battery 90 based on the amplified current sampling signal, the charging chip 81 controls the battery 90 to supply power normally.

[0109] Please see Figure 13 The current sampling circuit 831 is a resistor network composed of multiple resistors. For example... Figure 13 As shown, the current sampling circuit 831 includes resistors R5 to R9. The first end of resistor R5 is electrically connected to the current input node of the inflation device 10, and the second end of resistor R5 is electrically connected to the negative terminal of the battery 90. The current input node is electrically connected to motor 221, first solenoid valve 31, and second solenoid valve 32, respectively.

[0110] Please see Figure 14 The current amplifier circuit 832 includes resistors R10 to R13 (tenth to thirteenth), capacitors C2 to C4 (second and fourth), and amplifier U1. The positive terminal of amplifier U1 is electrically connected between resistors R6 and R7 (seventh), and the negative terminal is electrically connected between resistors R8 and R9 (eighth and ninth). The current flowing through motor 221 passes through resistor R5 (fifth) to obtain a current sampling signal. This current sampling signal is transmitted to amplifier U1 through resistors R6 to R9 (ninth). Amplifier U1 outputs the amplified current sampling signal to controller 60.

[0111] Please see Figure 15 The charging circuit 80 also includes a battery protection circuit 84, which is electrically connected between the positive and negative terminals of the battery 90 and is used to perform battery protection operations. When the battery protection circuit 84 detects overvoltage, overcurrent, or other phenomena in the battery 90 during charging or discharging, the battery protection circuit 84 performs battery protection operations to ensure that the battery is in a safe and reliable state.

[0112] Please see Figure 16 The battery protection circuit 84 includes a battery protection chip U2, a fourteenth resistor R14, a fifteenth resistor R15, and a fifth capacitor C5. The battery protection chip U2 can effectively monitor the voltage and current of the battery 90 and implement protection measures such as overcharge, over-discharge, overcurrent, and load short circuit to ensure that the battery 90 operates in a safe and efficient state.

[0113] The charging interface circuit 100 is electrically connected to the controller 60 and is used to plug in charging devices, including adapters, etc.

[0114] Please see Figure 17The charging interface circuit 100 includes a USB interface circuit 101 and an overvoltage protection circuit 102. The USB interface circuit 101 is used to connect a charging device and includes a bus pin for outputting the charging voltage of the charging device. The overvoltage protection circuit 102 is electrically connected to the bus pin and is used to pull down the charging voltage of the bus pin to a preset voltage in response to a charging voltage exceeding a preset voltage threshold.

[0115] Please see Figure 18 The USB interface circuit 101 includes a TYPE-C interface U3, a sixteenth resistor R16, a seventeenth resistor R17, a sixth capacitor C6, and a seventh capacitor C7. The overvoltage protection circuit 102 includes a TVS diode ZD0. When the charging device's interface is plugged into the TYPE-C interface U3, the TYPE-C interface U3 outputs a 5V voltage through the bus pin VBUS. When the voltage output by the TYPE-C interface U3 through the bus pin VBUS exceeds 5V, the TVS diode ZD0 can pull the charging voltage of the bus pin down to a preset voltage, thereby protecting the subsequent circuitry from excessive voltage.

[0116] The charging detection circuit 110 is electrically connected to the charging interface circuit 100 and the controller 60 respectively. It is used to respond to the charging device plugging into the charging interface circuit 100 and output a charging trigger signal. The controller 60 controls the working state of the inflation mechanism 20 based on the charging trigger signal. Therefore, the inflation device 10 can flexibly control the working state of the inflation mechanism 20 in combination with the charging status, which is conducive to the inflation device 10 working stably and reliably, and charging safely and reliably.

[0117] In some embodiments, when the controller 60 detects that the inflation mechanism 20 is in an inflation state in response to a charging trigger signal, it controls the inflation mechanism 20 to remain in an inflation state.

[0118] When the inflation mechanism 20 is in the inflation state, although the charging device has been inserted into the charging interface circuit 100, the inflation device 10 will not interrupt the inflation operation in order to enter the charging state. Instead, it will continue to control the inflation mechanism 20 to maintain the inflation state until the inflation mechanism 20 is de-inflated. Only then will the inflation device 10 enter the charging state. This avoids the user's device not being inflated with enough gas due to the interruption of the inflation operation in order to respond to charging. This ensures that the inflation device can reliably complete the inflation operation, which is beneficial to improving the user experience.

[0119] Please see Figure 19The charging detection circuit 110 includes an eighteenth resistor R18, a nineteenth resistor R19, a twentieth resistor R20, and a first NPN transistor Q3. The first end of the eighteenth resistor R18 is electrically connected to the charging interface circuit 100. The second end of the eighteenth resistor R18 is electrically connected to the first end of the nineteenth resistor R19 and the base of the first NPN transistor Q3. The second end of the nineteenth resistor R19 and the emitter of the first NPN transistor Q3 are grounded. An external voltage VDD is applied to the first end of the twentieth resistor R20. The second end of the twentieth resistor R20 is electrically connected to the collector of the first NPN transistor Q3 and the controller 60.

[0120] The working principle of the charging detection circuit 110 is as follows:

[0121] When the charging device is plugged into the charging interface circuit 100, the charging interface circuit 100 outputs a 5V high level (i.e., a charging trigger signal). The charging trigger signal is applied to the base of the first NPN transistor Q3. When the charging trigger signal is high, the first NPN transistor Q3 enters the conducting state, pulling down the voltage at its collector, and the controller 60 detects the low level. The controller 60 responds to the low level by detecting whether the inflation mechanism 20 is in an inflation state. If so, it controls the inflation mechanism 20 to remain in an inflation state; otherwise, it controls the charging chip to operate.

[0122] Please see Figure 20 The inflation device 10 also includes a boost circuit 120, which is electrically connected to the battery 90, the solenoid valve drive circuit 40, and the motor drive circuit 50, respectively. The boost circuit 120 is used to boost the voltage of the battery 90 to obtain a drive voltage. This drive voltage is transmitted to the solenoid valve drive circuit 40 and the motor drive circuit 50 to drive them to operate. The drive voltage is 12V.

[0123] Please see Figure 21 The boost circuit 120 includes capacitors C8 to C21 (eighth), resistors R21 to R29 (twenty-ninth), fuse F1, inductor L1, switch Q4, and boost chip U4. The boost circuit 120 can boost the voltage of battery 90 (2.8V to 4.2V) to 12V. The 12V output voltage can supply the solenoid valve drive circuit 40 and the motor drive circuit 50 to reliably drive the solenoid valve assembly 30 and the motor 221.

[0124] Please see Figure 22 The inflation device 10 also includes a pressure sensor 130, a first temperature sampling circuit 140, a second temperature sampling circuit 150, a lighting circuit 160, a low-dropout linear regulator 170, a power consumption control circuit 180, a button circuit 190, a display circuit 200, and a display power supply circuit 210.

[0125] The air pressure sensor 130 is electrically connected to the controller 60 and is used to sample the air pressure of the inflation mechanism 20. The controller 60 controls the working state of the motor 221 based on the air pressure of the inflation mechanism 20.

[0126] In inflation mode, when the controller 60 detects that the air pressure of the inflation mechanism 20 has reached the preset inflation threshold, the controller 60 controls the motor 221 to stop working. When the controller 60 detects that the air pressure of the inflation mechanism 20 has not reached the preset inflation threshold, the controller 60 controls the motor 221 to continue working.

[0127] In the deflation mode, when the controller 60 detects that the air pressure of the inflation mechanism 20 has reached the preset deflation threshold, the controller 60 enters the deflation mode and controls the motor 221 to work.

[0128] In the air-vacuuming mode, when the controller 60 detects that the air pressure of the inflation mechanism 20 has reached the preset minimum threshold, the controller 60 controls the motor 221 to stop working.

[0129] Please see Figure 23 The pressure sensor 130 includes a pressure detection chip U5, a 30th resistor R30, a 31st resistor R31, and a 22nd capacitor C22. The pressure detection chip U5 samples the pressure of the inflation mechanism 20 and communicates with the controller 60 through the SDA_SER and SCL_SER pins to transmit the pressure of the inflation mechanism 20 to the controller 60.

[0130] In some embodiments, please continue reading Figure 23 The barometric pressure sensor 130 also includes a thirty-second resistor R32, which is used for impedance matching.

[0131] The first temperature sampling circuit 140 is electrically connected to the controller 60 and is used to sample the operating temperature of the battery 90. The controller 60 monitors the operating status of the battery 90 based on the operating temperature of the battery 90. When the operating temperature of the battery 90 exceeds a first temperature threshold, the controller 60 generates a first alarm message to alert the user that the battery 90 is overheating. Alternatively, the controller 60 controls the charging chip 81 to stop charging the battery 90, or the controller 60 notifies the charging chip 81 to control the battery 90 to stop discharging, thereby protecting the battery 90 from damage due to overheating.

[0132] Please see Figure 24 The first temperature sampling circuit 140 includes a thirty-third resistor R33 and a negative temperature coefficient resistor NTC. The negative temperature coefficient resistor NTC is disposed adjacent to or in close contact with the battery 90 and is used to sample the operating temperature of the battery 90.

[0133] The second temperature sampling circuit 150 is electrically connected to the controller 60 and is used to sample the operating temperature of the solenoid valve assembly 30. When the operating temperature of the solenoid valve assembly 30 exceeds the second temperature threshold, the controller 60 generates a second alarm message to alert the user that the temperature of the solenoid valve assembly 30 is too high, or the controller 60 controls the solenoid valve assembly 30 to stop working.

[0134] The second temperature sampling circuit 150 is a temperature sensor, such as a surface-mount temperature sensor, attached to the solenoid valve assembly 30. Please refer to section 23; the output of the temperature sensor is inserted into interface J1. In some embodiments, please refer to... Figure 23 The second temperature sampling circuit 150 includes a thirty-fourth resistor R34, which is used to assist the temperature sensor in temperature detection.

[0135] The lighting circuit 160 is electrically connected to the controller 60 and is used to generate light under the control of the controller 60.

[0136] Please see Figure 25 The lighting circuit 160 includes a light source 161, a 35th resistor R35, a 36th resistor R36, a 23rd capacitor C23, and a 5th NMOS transistor Q5.

[0137] The controller 60 outputs a control signal LED_DRV to the fifth NMOS transistor Q5. When the control signal LED_DRV is high, the fifth NMOS transistor Q5 is turned on, and under the influence of 12V voltage, the driving current flows through the light source 161, thereby driving the light source 161 to emit light. When the control signal LED_DRV is low, the fifth NMOS transistor Q5 is turned off, and the light source 161 stops emitting light.

[0138] The low-dropout linear regulator 170 is electrically connected to the barometric pressure sensor 130.

[0139] The power consumption control circuit 180 is electrically connected between the battery 90 and the low dropout linear regulator 170 and is also electrically connected to the controller 60. It is used to establish or disconnect the power supply circuit between the battery 90 and the low dropout linear regulator 170 under the control of the controller 60.

[0140] When the inflation device 10 is in the off state, the controller 60 disconnects the power supply circuit between the battery 90 and the low-dropout linear regulator 170. The low-dropout linear regulator 170 cannot output power to the pressure sensor 130, thereby reducing the power consumption of the pressure sensor 130 in the off state, which helps to reduce the overall power consumption of the device.

[0141] When the inflation device 10 is in operation, the controller 60 establishes a power supply circuit between the battery 90 and the low-dropout linear regulator 170. The low-dropout linear regulator 170 outputs power to the pressure sensor 130, thereby ensuring that the pressure sensor 130 can work normally.

[0142] Please see Figure 26 The low-dropout linear regulator 170 includes a low-dropout linear regulator chip U6 and capacitors C24 through C26. The low-dropout linear regulator chip U6 outputs a 3.3V voltage to the pressure sensor 130.

[0143] Please continue reading. Figure 26 The power consumption control circuit 180 includes a first diode ZD1, a second diode ZD2, a thirty-seventh resistor R37, and a first PMOS transistor Q6. A first voltage, the voltage of the positive terminal of the battery, is applied to the anode of the first diode ZD1. The cathode of the first diode ZD1 is electrically connected to the cathode of the second diode ZD2, the first terminal of the thirty-seventh resistor R37, the source of the first PMOS transistor Q6, and the power supply pin of the controller 60. The anode of the second diode ZD2 is electrically connected to the positive terminal of the battery 90. The second terminal of the thirty-seventh resistor R37 and the gate of the first PMOS transistor Q6 are both electrically connected to the controller 60. The drain of the first PMOS transistor Q6 is electrically connected to the low-dropout linear regulator 170. The first diode ZD1 and the second diode ZD2 can be ordinary diodes or Zener diodes.

[0144] When the inflation device 10 is in the off state, when the controller 60 applies a high level to the gate of the first PMOS transistor Q6, the first PMOS transistor Q6 enters the cut-off state, and the low dropout linear regulator 170 has no power input. Therefore, the low dropout linear regulator 170 cannot output power to the pressure sensor 130. Thus, the pressure sensor 130 does not consume power in the off state, thereby saving power consumption.

[0145] When the controller 60 applies a low level to the gate of the first PMOS transistor Q6, the first PMOS transistor Q6 enters the conducting state. The low dropout linear regulator 170 converts the voltage output by the battery 90 into a 3.3V voltage and outputs a 3.3V voltage to the pressure sensor 130, ensuring that the pressure sensor 130 can work normally.

[0146] The button circuit 190 is electrically connected to the controller 60 and is used to receive user button operations.

[0147] Please see Figure 27 The button circuit 190 includes a reset button circuit 191, an illumination button circuit 192, and a start / stop button circuit 193.

[0148] The reset button circuit 191 is electrically connected to the controller 60 and is used to trigger the controller 60 to perform a reset operation. Please refer to [link / reference needed]. Figure 28 The reset button circuit 191 includes a third diode D3, a fourth diode D4, a thirty-eighth resistor R38 to a forty-second resistor R42, and a seventh switch Q7 to a tenth switch Q10.

[0149] Please see Figure 29 The lighting button circuit 192 includes a first button K1, which is electrically connected to the positive terminal of the third diode D3 and the controller 60. The start / stop button circuit 193 includes a second button K2, which is electrically connected to the positive terminal of the fourth diode D4 and the controller 60.

[0150] When the user briefly presses the first button K1, the controller 60 detects a low-level input and sets the operating mode according to preset logic. When the user presses and holds the first button K1, the controller 60 detects a low-level input for a preset duration and sends a control signal to the lighting circuit 160 to control the lighting circuit 160 to generate light.

[0151] When the inflation device 10 is in operation, and the user presses the second button K2 alone, the controller 60 detects a low-level input and controls the inflation device 10 to stop working. When the inflation device 10 is in a stopped working state, and the user presses the second button K2 alone, the controller 60 detects a low-level input and controls the inflation device 10 to resume operation.

[0152] When the user presses the first button K1 and the second button K2 simultaneously, the seventh switch Q7 and the eighth switch Q8 are both turned on, the ninth switch Q9 is turned off, and the tenth switch Q10 is turned on. This pulls the voltage of the power supply pin VDD_MCU of the controller 60 low, and the controller 60 enters a power-down state. Then, when the user releases the first button K1 and the second button K2, or releases either button, power is restored to the power supply pin VDD_MCU of the controller 60. At this point, the controller 60 enters a reset state and performs a reset operation.

[0153] The display circuit 200 is electrically connected to the controller 60 and is used to display the battery level and / or charge / puff status of the battery 90. Please refer to [link / reference]. Figure 30 The display circuit 200 includes a display driver chip 201, a light-emitting diode array 202, and an adjustment button circuit 203.

[0154] The display driver chip 201 is electrically connected to the light-emitting diode array 202 and the adjustment button circuit 203 respectively, and is used to drive the light-emitting diode array 202 to emit light.

[0155] Please see Figure 31The display driver chip 201 is electrically connected to the light-emitting diode array 202 and the adjustment button circuit 203 through its own pins.

[0156] Please see Figure 32 The light-emitting diode array 202 includes multiple light-emitting diodes arranged in a matrix. Each light-emitting diode, or each row of light-emitting diodes, or each column of light-emitting diodes, or one or more light-emitting diodes selected according to a preset rule, forms a light-emitting unit used to indicate the power of the battery 90 or the working status of the charging device 10.

[0157] The working principle of the LED array 202 is as follows: When the first column of LEDs needs to light up, the display driver chip 201 outputs a high level through pin A and sets pins GRID1 to GRID6 to a low level, while pin GRID7 is at a high level. At this time, the driving current flows through the first column of LEDs, driving the first column of LEDs to light up.

[0158] Please see Figure 33 The adjustment button circuit 203 includes a third button K3, a fourth button K4, a forty-third resistor R43, a forty-fourth resistor R44, a fifth diode D5, and a sixth diode D6.

[0159] When the user presses the third button K3, the inflation device 10 can increase the inflation speed or deflation speed, or increase the inflation time or deflation time, etc.

[0160] When the user presses the fourth button K4, the inflation device 10 can reduce the inflation speed, reduce the inflation time, or reduce the deflation time, etc.

[0161] The display power supply circuit 210 is electrically connected to the display circuit 200 and is used to provide power to the display circuit 200. Please refer to [link / reference]. Figure 34 The display power supply circuit 210 includes a power chip U7, capacitors C28 (28th) to C32 (32nd), resistors R45 (45th) to R47 (47th), and a second inductor L2. The power chip U7 can reduce the 12V voltage to 5V and transmit the 5V voltage to the display driver chip 201, ensuring the normal operation of the display driver chip 201.

[0162] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this application as described above, which are not provided in detail for the sake of brevity; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An inflator device characterized by, include: An inflation mechanism includes an air passage assembly and an air pump body. The air pump body is connected to the air passage assembly and is used to inflate the air passage assembly with gas or to extract or release the gas flowing through the air passage assembly. The air pump body includes a motor. Controller; Solenoid valve assembly, mounted on the pneumatic circuit assembly; The solenoid valve drive circuit is electrically connected to the solenoid valve assembly and the controller, respectively, and is used to adjust the working state of the solenoid valve assembly under the control of the controller to change the air path state of the air path assembly. A motor drive circuit is electrically connected to both the motor and the controller, and is controlled by the controller to drive the motor to flow gas on the gas path assembly.

2. The inflation device according to claim 1, characterized in that, The solenoid valve assembly includes a first solenoid valve and a second solenoid valve, and both the first solenoid valve and the second solenoid valve are electrically connected to the solenoid valve drive circuit. When the controller controls the solenoid valve drive circuit to drive the first solenoid valve and the second solenoid valve to be in the first type of state, the air circuit state of the air circuit assembly is the air-filling state. When the controller controls the solenoid valve drive circuit to drive the first solenoid valve and the second solenoid valve to the second type of state, the air path state of the air path assembly is either the air extraction state or the air release state.

3. An inflator according to claim 2, wherein The solenoid valve drive circuit includes a first switching transistor, which is electrically connected to the first solenoid valve, the second solenoid valve, and the controller. The first switching transistor is used to respond to a first control signal from the controller to enter a conducting state, so that a first driving current flows through the first solenoid valve and the second solenoid valve respectively, or to respond to a second control signal from the controller to enter a cut-off state, so that the first driving current stops flowing through the first solenoid valve and the second solenoid valve.

4. An inflator according to claim 3, wherein The first switching transistor is a first NMOS transistor. The solenoid valve driving circuit further includes a first resistor and a first diode. The gate of the first NMOS transistor is electrically connected to the controller and the first terminal of the first resistor, respectively. The second terminal of the first resistor is grounded. The source of the first NMOS transistor is grounded. The cathode of the first diode, the anode of the first solenoid valve, and the anode of the second solenoid valve are all applied with a driving voltage. The anode of the first diode, the cathode of the first solenoid valve, and the cathode of the second solenoid valve are all electrically connected to the drain of the first NMOS transistor.

5. The inflator apparatus according to claim 1, wherein The motor drive circuit includes a second switching transistor, which is electrically connected to both the motor and the controller. The second switching transistor is used to respond to a first motor signal from the controller, enter a conducting state to control the motor to work, or respond to a second motor signal from the controller, enter a cut-off state to control the motor to stop working.

6. An inflator according to claim 5, wherein The second switching transistor is a second NMOS transistor. The motor drive circuit also includes a second resistor and a second diode. The gate of the second NMOS transistor is electrically connected to the controller and the first terminal of the second resistor, respectively. The second terminal of the second resistor is grounded. The source of the second NMOS transistor is grounded. The second diode is connected in parallel with the motor and then electrically connected to the drain of the second NMOS transistor.

7. The inflation device according to any one of claims 1 to 6, characterized in that, Also includes: Battery; The boost circuit is electrically connected to the battery, the solenoid valve drive circuit, and the motor drive circuit, respectively, and is used to boost the voltage of the battery to obtain the drive voltage.

8. An inflator according to any one of claims 1 to 6, wherein Also includes: A pressure sensor is mounted on the gas path assembly and electrically connected to the controller; and / or, A first temperature sampling circuit, electrically connected to the controller, is used to sample the battery's operating temperature; and / or, The button circuit is electrically connected to the controller; and / or, The display circuit is electrically connected to the controller; and / or, The lighting circuit is electrically connected to the controller.

9. An inflator according to any one of claims 1 to 6, wherein Also includes: Low-dropout linear regulator, electrically connected to the pressure sensor; The power consumption control circuit is electrically connected between the battery and the low-dropout linear regulator and also electrically connected to the controller, and is used to establish or disconnect the power supply circuit between the battery and the low-dropout linear regulator under the control of the controller.

10. An inflator according to claim 9, wherein The power consumption control circuit includes a first diode, a second diode, a third resistor, and a first PMOS transistor. A first voltage is applied to the anode of the first diode. The cathode of the first diode is electrically connected to the cathode of the second diode, the first terminal of the third resistor, the source of the first PMOS transistor, and the power supply pin of the controller. The anode of the second diode is electrically connected to the positive terminal of the battery. The second terminal of the third resistor and the gate of the first PMOS transistor are both electrically connected to the controller. The drain of the first PMOS transistor is electrically connected to the low dropout linear regulator.

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