Inflator pump circuit and inflator pump

Abstract

The application discloses an inflator pump circuit and an inflator pump. The inflator pump circuit comprises a control unit, a power supply, a first switch unit and an inflator motor. The control unit is connected with the first switch unit, and the inflator motor is connected with the power supply through the first switch unit. The control unit is used for outputting a first control signal to the first switch unit, and the first control signal is used for turning on the first switch unit. The power supply supplies power to the inflator motor through the first switch unit, so that the inflator motor works. The application reduces the use limitation of the inflator pump.

Description

Technical Field

[0001] This application relates to the field of circuits, and more specifically, to an air pump circuit and an air pump. Background Technology

[0002] An air pump is a device used to quickly inflate various inflatable products (such as car tires, air mattresses, air trampolines, air sofas, and large inflatable toys). Existing air pumps, such as car tire inflators, generally obtain their operating voltage from an external power source to generate air pressure through a high-speed rotating motor to inflate the product. Therefore, existing air pumps must be used in an environment with an external power source, making them difficult to carry and subject to many limitations. Summary of the Invention

[0003] This application provides an air pump circuit and an air pump, which can solve the technical problem of how to reduce the limitations of using an air pump.

[0004] In a first aspect, embodiments of this application provide an air pump circuit, which includes: a control unit, a power supply, a first switching unit, and an air pump motor; the control unit is connected to the first switching unit, and the air pump motor is connected to the power supply through the first switching unit.

[0005] The control unit is used to output a first control signal to the first switch unit, the first control signal is used to turn on the first switch unit, and the power supply supplies power to the air motor through the first switch unit so that the air motor can work.

[0006] Secondly, embodiments of this application provide an air pump, including the air pump circuit described in the first aspect above.

[0007] In this embodiment, the air pump circuit includes a control unit, a power supply, a first switch unit, and an air motor. The control unit is connected to the first switch unit, and the air motor is connected to the power supply through the first switch unit. The control unit outputs a first control signal to the first switch unit, which activates the first switch unit. The power supply provides power to the air motor through the first switch unit, enabling the air motor to operate. Therefore, this embodiment provides an air pump circuit that can be started without an external power supply, and a convenient air pump, reducing the limitations of air pump usage. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 A topology circuit diagram of an air pump circuit provided in an embodiment of this application;

[0010] Figure 2 A topology circuit diagram of an air pump circuit provided in an embodiment of this application;

[0011] Figure 3 A topology circuit diagram of an air pump circuit provided in an embodiment of this application;

[0012] Figure 4 A topology circuit diagram of an air pump circuit provided in an embodiment of this application;

[0013] Figure 5 A topology circuit diagram of an air pump circuit provided in an embodiment of this application;

[0014] Figure 6 A topology circuit diagram of an air pump circuit provided in an embodiment of this application;

[0015] Figure 7 A topology diagram of a power supply circuit provided in an embodiment of this application;

[0016] Figure 8 A topology diagram of a driving circuit provided in an embodiment of this application;

[0017] Figure 9 This is a topology diagram of a display circuit provided in an embodiment of this application. Detailed Implementation

[0018] To make the features and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of air pump circuits and air pumps consistent with some aspects of this application as detailed in the appended claims.

[0020] like Figure 1 As shown, Figure 1 This is a topology diagram of an air pump circuit provided in an embodiment of this application. The air pump circuit includes: a control unit 11, a power supply BAT, a first switch unit K1, and an air motor M. The control unit 11 is connected to the first switch unit K1, and the air motor M is connected to the power supply BAT through the first switch unit K1.

[0021] The control unit 11 outputs a first control signal to the first switch unit K1. The first control signal is used to turn on the first switch unit K1. After the first switch unit K1 is turned on, the circuit between the power supply BAT and the air motor M is connected. Then the power supply BAT outputs electrical energy to the air motor M through the first switch unit K1. After receiving the electrical energy, the air motor M starts to work.

[0022] The first switching unit can be a control device such as a transistor or MOSFET, and the first control signal output by the control unit 11 can be a high-level signal.

[0023] The air motor M can be an electric motor, etc. The electric motor can be connected to the piston of the cylinder. The electric motor drives the piston of the cylinder to move through physical transmission, thereby generating air pressure in the cylinder and outputting it through the gas conduit connected to the cylinder. It should be noted that the gas conduit can be physically connected to the air inlet of the inflatable product.

[0024] This application provides an air pump circuit that can be started without an external power supply, reducing the limitations on the use of air pumps.

[0025] like Figure 2 As shown, Figure 2 This is a topology circuit diagram of an air pump circuit provided in an embodiment of this application. The air pump circuit includes: a control unit 11, a power supply BAT, a first switching unit K1, an air motor M, a charging circuit 12, and a charging detection circuit 13. The charging circuit 12 includes: a charging interface 121, a boost chip 122, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first diode D1, a second diode D2, and a first inductor L1; the charging detection circuit 13 includes: a fifth capacitor C5, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, and a second switching unit K2.

[0026] The first terminal of the first capacitor C1 is connected to the output pin (VBUS pin) of the charging interface 121, the input pin (VIN pin) of the boost chip 122, the first terminal of the first capacitor C2, and the first terminal of the first inductor L1, and the second terminal of the first capacitor C1 is grounded; the first terminal of the first capacitor C2 is connected to the output pin (VBUS pin) of the charging interface 121, the input pin (VIN pin) of the boost chip 122, and the first terminal of the first inductor L1, and the second terminal of the first capacitor C2 is grounded; the first terminal of the first resistor R1 is connected to the first pin (pin 1) of the boost chip 122. The first resistor R1 is connected to ground; the first terminal of the third capacitor C3 is connected to the cathode of the first diode D1, the first terminal of the second resistor R2, the first terminal of the fourth resistor R4, the first terminal of the fourth capacitor C4, and the anode of the second diode D2. The second terminal of the third capacitor C3 is grounded; the first terminal of the fourth capacitor C4 is connected to the cathode of the first diode D1, the first terminal of the second resistor R2, the first terminal of the fourth resistor R4, and the anode of the second diode D2. The second terminal of the third capacitor C3 is grounded; the first terminal of the second resistor R2 is connected to the cathode of the first diode D1, the first terminal of the second resistor R2, the first terminal of the fourth resistor R4, and the anode of the second diode D2. The second terminal of the third capacitor C3 is grounded; the first terminal of the second resistor R2 is connected to the cathode of the first diode D1, the first terminal of the fourth resistor R4, and the anode of the second diode D2. The first terminal of resistor R4 is connected to the positive terminal of the second diode D2; the second terminal of the second resistor R2 is connected to the first terminal of the third resistor R3 and the feedback pin (FB pin) of the boost chip 122; the first terminal of the third resistor R3 is connected to the feedback pin (FB pin) of the boost chip 122, and the second terminal of the third resistor R3 is grounded; the first terminal of the fourth resistor R4 is connected to the negative terminal of the first diode D1 and the positive terminal of the second diode D2, and the second terminal of the fourth resistor R4 is grounded; the first terminal of the first inductor L1 is connected to the input pin (VIN pin) of the boost chip 122, and the first inductor L... The second terminal of 1 is connected to the positive terminal of the first diode D1 and the switching pin (SW pin) of the boost chip 122; the positive terminal of the first diode D1 is connected to the switching pin (SW pin) of the boost chip 122, and the negative terminal of the first diode D1 is connected to the positive terminal of the second diode D2; the negative terminal of the second diode D2 is connected to the positive terminal of the power supply; the enable pin (EN pin) of the boost chip 122 is connected to the first pin (Y1 pin) of the control unit 11, and the ground pin (GND pin) of the boost chip 122 is grounded; the ground pin (GND pin) of the charging interface 121 is grounded.

[0027] The control unit 11 outputs a second control signal to the charging circuit 12, which is used to control the charging circuit 12 to supply power to the power supply BAT.

[0028] The charging interface 121 is connected to an external power source, and the initial charging voltage input from the external power source is output to the boost chip 122. The control unit 11 outputs a third control signal to the boost chip 122. The third control signal is used to control the boost chip 122 to boost the initial charging voltage to obtain the target charging voltage and output it to the power source BAT.

[0029] The first end of the fifth resistor R5 is connected to the output pin (VBUS pin) of the charging interface 121. The second end of the fifth resistor R5 is connected to the first end of the fifth capacitor C5, the first end of the sixth resistor R6, and the first end of the second switching unit K2. The first end of the fifth capacitor C5 is connected to the first end of the sixth resistor R6 and the first end of the second switching unit K2, and the second end of the fifth capacitor C5 is grounded. The first end of the sixth resistor R6 is connected to the first end of the second switching unit K2, and the second end of the sixth resistor R6 is grounded. The second end of the second switching unit K2 is connected to the first end of the seventh resistor R7, and the third end of the second switching unit K2 is grounded. The second end of the seventh resistor R7 is connected to the second pin (Y2 pin) of the control unit 11.

[0030] The charging interface 121 is connected to an external power source, and then outputs a high-level signal to the charging detection circuit 13. The high-level signal is used to determine that the charging interface 121 is connected to an external power source. The charging detection circuit 13 outputs a power access signal to the control unit 11. The power access signal is used to prompt the control unit 11 that the charging interface 121 is connected to an external power source.

[0031] Specifically, the charging interface 121 is connected to an external power source and outputs a high-level signal to the charging detection circuit 13; the charging detection circuit 13 outputs a high-level signal to the control unit 11; the control unit 11 outputs a third control signal to the boost chip 122 to turn on the boost chip 122. After the boost chip 122 is turned on, the circuit between the charging interface 121 and the power supply BAT is connected. At this time, the charging interface 121 outputs the initial charging voltage input from the external power source to the boost chip 122. The boost chip 122 boosts the received initial charging voltage to obtain the target charging voltage, and then outputs the target charging voltage to the power supply BAT.

[0032] For example, the charging interface 121 can be a female TYPE-C connector, and the second switching unit K2 can be a transistor. When the charging interface 121 is connected to an external power source, its output pin outputs a high-level signal to the fifth resistor R5, which in turn outputs a high-level signal to the second switching unit K2. Upon receiving the high-level signal, the base of the second switching unit K2 is turned on, and then a high-level signal is output to the control unit 11 via the second switching unit K2 and the seventh resistor R7. The charging detection circuit 13 outputs a high-level signal to the control unit 11. The control unit 11 outputs a third control signal to the boost chip 122 to turn it on. After the boost chip 122 is turned on, the circuit between the charging interface 121 and the power supply BAT is connected. At this time, the charging interface 121 outputs the initial charging voltage from the external power source to the boost chip 122. The boost chip 122 boosts the received initial charging voltage to obtain the target charging voltage, and then outputs the target charging voltage to the power supply BAT.

[0033] Optionally, the first capacitor C1 and the second capacitor C2 form a filter circuit, the fourth resistor R4, the third capacitor C3 and the fourth capacitor C4 form a filter circuit, the second resistor R2 and the third resistor R3 form a voltage divider circuit, the fifth resistor R5 and the seventh resistor R7 are current limiting resistors, and the fifth capacitor C5 and the sixth resistor R6 form a filter circuit.

[0034] Optionally, the air pump circuit also includes: a twelfth resistor R12, a thirteenth resistor R13, and a third diode D3. The first end of the twelfth resistor R12 is connected to the tenth pin (Y10 pin) of the control unit 11; the second end of the twelfth resistor R12 is connected to the first end of the thirteenth resistor R13 and the first end of the first switching unit K1; the first end of the thirteenth resistor R13 is connected to the first end of the first switching unit K1, and the second end of the thirteenth resistor R13 is grounded; the anode of the third diode D3 is connected to the cathode of the air motor M and the second end of the first switching unit K1; the cathode of the third diode D3 is connected to the anode of the power supply BAT and the anode of the air motor M; the anode of the air motor M is connected to the anode of the power supply BAT; the cathode of the air motor M is connected to the second end of the first switching unit K1; the third end of the first switching unit K1 is grounded.

[0035] For example, the first switching unit K1 can be a switching control device such as a transistor, a MOSFET, or a MOSFET with a built-in parasitic diode. The control unit 11 outputs a high-level signal to the twelfth resistor R12, and then transmits the high-level signal to the first switching unit K1 through the twelfth resistor R12 to turn on the first switching unit K1. Then, the power supply BAT, the inflatable motor M, and the first switching unit K1 form a circuit. The power supply BAT outputs electrical energy to the inflatable motor M through the first switching unit K1. After receiving the electrical energy, the inflatable motor M starts to work.

[0036] This application provides an air pump circuit for quickly charging a power source. By using a built-in boost chip, the charging speed of the power source is increased, and no external boost device is required, thus reducing the limitations of using the air pump.

[0037] like Figure 3 As shown, Figure 3 This is a topology diagram of an air pump circuit provided in an embodiment of this application. The air pump circuit includes: a control unit 11, a power supply BAT, a first switch unit K1, an air motor M, an air pressure detection unit 14, a temperature detection unit 15, and a button unit 16. The air pressure detection unit 14 may include: an air pressure sensor SEN, an eighth resistor R8, and a sixth capacitor R6. The temperature detection unit 15 may be a thermistor, a temperature sensor, etc. For example, in this embodiment, the temperature detection unit 15 in the topology diagram is a thermistor. Optionally, the button unit 16 may include at least one button. For example, in this embodiment, the button unit 16 in the topology diagram includes a first button K6, a second button K7, a third button K8, a fourth button K9, and a fifth button K10.

[0038] The air pressure detection unit 14 is used to detect the gas pressure value of the cylinder of the air pump and output an air pressure signal to the control unit 11. The control unit 11 is used to compare the gas pressure value in the air pressure signal with the preset air pressure value. If the gas pressure value reaches the preset air pressure value, a fourth control signal is output to the first switch unit K1. The fourth control signal is used to close the first switch unit K1 so that the air motor M stops working.

[0039] Temperature detection unit 15 is used to detect the temperature value of power supply BAT and output a temperature signal to control unit 11. Control unit 11 is used to compare the temperature value in the temperature signal with the preset temperature value. If the temperature value reaches the preset temperature value, it outputs a fifth control signal to the first switch unit K1. The fifth control signal is used to turn off the first switch unit K1 so that the air motor M stops working.

[0040] The button unit 16 is used to output control signals to the control unit 11. It should be noted that when the button unit 16 is pressed, it generates a corresponding control signal, which is then transmitted to the control unit 11.

[0041] Specifically, the first terminal of the barometric pressure sensor SEN is connected to the third pin (Y3 pin) of the control unit 11; the second terminal of the barometric pressure sensor SEN is connected to the first terminal of the sixth capacitor C6 and the fourth pin (Y4 pin) of the control unit 11; the third terminal of the barometric pressure sensor SEN is connected to the second terminal of the sixth capacitor C6 and the fifth pin (Y5 pin) of the control unit 11; the fourth terminal of the barometric pressure sensor SEN is connected to the first terminal of the eighth resistor R8 and the sixth pin (Y6 pin) of the control unit 11; the second terminal of the eighth resistor R8 is grounded. The first terminal of the temperature detection unit 15 is connected to the seventh pin (Y7 pin) of the control unit 11, and the second terminal of the temperature detection unit 15 is grounded. The button unit 16 is connected to the eighth pin of the control unit 11 and to the ground. For example, if the button unit 16 includes five buttons, the first button K6 is connected to the Y81 pin of the control unit 11, the second button K7 is connected to the Y82 pin of the control unit 11, the third button K8 is connected to the Y83 pin of the control unit 11, the fourth button K9 is connected to the Y84 pin of the control unit 11, and the first button K10 is connected to the Y85 pin of the control unit 11.

[0042] For example, the first button K6 can be a lighting control button, the second button K7 can be an inflation control button, the third button K8 can be a mode selection button, the fourth button K9 can be a control button to increase the preset air pressure value, and the fifth button K10 can be a control button to decrease the preset air pressure value. When each button is pressed, a corresponding control signal is generated and transmitted to the control unit 11.

[0043] Furthermore, when the first button K6 is continuously pressed for a certain duration, the first button K6 continuously transmits a first pressing signal to the Y81 pin of the control unit 11. If the pressing duration reaches the lighting duration, that is, the duration for which the control unit 11 continuously receives the lighting signal reaches the lighting duration, the control unit 11 outputs an on signal to the third switch unit K3 to turn on the third switch unit K3, thereby controlling the lighting circuit to work, that is, to start lighting. If the first button K6 is pressed twice consecutively during the operation of the lighting circuit, the first button K6 outputs two first pressing signals to the Y81 pin of the control unit 11, and the control unit 11 outputs an off signal to the third switch unit K3 to turn off the third switch unit K3, thereby controlling the lighting circuit to stop working, that is, to stop lighting.

[0044] When the second button K7 is continuously pressed, a second press signal is continuously output to the Y82 pin of the control unit 11. If the duration of continuous pressing of the second button K7 reaches the power-on duration (i.e., the control unit 11 continuously receives the second press signal for the duration of power-on), the display module 20 is controlled to operate, and all pins of the control unit 11 are turned on, thus putting the air pump into the power-on state. When the second button K7 is continuously pressed, a second press signal is continuously output to the Y82 pin of the control unit 11. If the duration of continuous pressing of the second button K7 reaches the power-off duration (i.e., the control unit 11 continuously receives the second press signal for the duration of power-off), the display module 20 is controlled to stop operating, and all pins of the control unit 11 except the Y82 pin are turned off, thus putting the air pump into the power-off state.

[0045] If the air pump is powered on, pressing the second button K7 outputs a second press signal to the Y82 pin of the control unit 11. The control unit 11 then outputs an open signal to the first switch unit K1 to turn on the first switch unit K1, thereby controlling the air motor M to start working. If the air motor M is in working condition, pressing the second button K7 outputs a second press signal to the Y82 pin of the control unit 11. The control unit 11 then outputs an close signal to the first switch unit K1 to turn off the first switch unit K1, thereby controlling the air motor M to stop working.

[0046] When the third button K8 is continuously pressed, a third press signal is continuously output to the Y83 pin of the control unit 11. If the duration of the continuous pressing of the third button K8 reaches the switching duration, that is, the duration of the control unit 11 continuously receiving the third press signal reaches the switching duration, the inflation mode of the air pump is switched. Optionally, different inflation modes result in at least one difference in the power of the air motor M, the speed of the air motor M, and the preset air pressure value.

[0047] When the fourth button K9 is pressed, a fourth press signal is output to the Y84 pin of the control unit 11, and the control unit 11 adds the preset air pressure value to the preset adjustment value; when the fifth button K10 is pressed, a fifth press signal is output to the Y85 pin of the control unit 11, and the control unit 11 subtracts the preset adjustment value from the preset air pressure value.

[0048] This application provides a protection circuit for an air pump circuit. Specifically, it uses a pressure detection unit to detect the gas pressure inside the cylinder and promptly stops the inflation process when the gas pressure is too high, thus preventing hardware failure due to excessive gas pressure. It also uses a temperature detection unit to detect the temperature of the power supply's outer surface, preventing battery and circuit damage due to excessive battery temperature.

[0049] like Figure 4 As shown, Figure 4This is a topology circuit diagram of an air pump circuit provided in an embodiment of this application. The air pump circuit includes: a control unit 11, a power supply BAT, a first switching unit K1, an air pump motor M, a discharge circuit 16, and a memory chip 17. The discharge circuit 16 may include: a step-down chip 161, an output chip 162, an output interface 163, a fourth diode D2, a fourteenth resistor R14, a fifteenth resistor R15, a seventh capacitor C7, a fifth diode D5, an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10, a second inductor L2, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, an eleventh capacitor C11, a nineteenth resistor R19, a twelfth capacitor C12, and a twentieth resistor R20.

[0050] The discharge circuit 16 is connected to the control unit and the power supply BAT. The control unit 11 outputs a seventh control signal to the discharge circuit 16, which controls the discharge circuit 16 to adjust the voltage value of the power supply BAT to a preset voltage value. The storage chip 17 is connected to the control unit 11 and is used to store the recorded information generated by the control unit 11.

[0051] Furthermore, the step-down chip 161 is connected to the power supply BAT and the output chip 162; the output chip 162 is connected to the output interface 163; the control unit 11 is used to output an eighth control signal to the step-down chip 161, the eighth control signal being used to control the step-down chip 161 to adjust the voltage value of the voltage input by the power supply BAT to a preset voltage value; the power supply BAT outputs voltage to the step-down chip 161; the step-down chip 161 adjusts the voltage value of the voltage input by the power supply BAT to the preset voltage value and outputs the adjusted voltage to the output chip 162; the output chip 162 outputs the adjusted voltage to the output interface 163; the output interface 163 outputs the adjusted voltage to the external electrical device connected to the output interface 163.

[0052] Specifically, the anode of the fourth diode D2 is connected to the eleventh pin (Y11 pin) of the control unit 11, and the cathode of the fourth diode D2 is connected to the first terminal of the fourteenth resistor R14; the second terminal of the fourteenth resistor R14 is connected to the enable pin (EN pin) of the buck converter chip 161, the first terminal of the fifteenth resistor R15, and the first terminal of the seventh capacitor C7; the first terminal of the fifteenth resistor R15 is connected to the enable pin (EN pin) of the buck converter chip 161 and the first terminal of the seventh capacitor C7, and the second terminal of the fifteenth resistor R15 is grounded; the first terminal of the seventh capacitor C7 is connected to the enable pin (EN pin) of the buck converter chip 161, and the seventh capacitor C7 is grounded. The second terminal of capacitor C7 is grounded; the anode of the fifth diode D5 is connected to the anode of power supply BAT, and the cathode of the fifth diode D5 is connected to the first terminal of the eighth capacitor C8, the first terminal of the ninth capacitor C9, the input pin (VCC pin) of the step-down chip 161, and the external power supply (VDD+5V); the first terminal of the eighth capacitor C8 is connected to the external power supply (VDD+5V), the first terminal of the ninth capacitor C9, and the input pin (VCC pin) of the step-down chip 161, and the second terminal of the eighth capacitor C8 is grounded; the first terminal of the ninth capacitor C9 is connected to the external power supply (VDD+5V) and the input pin (VCC pin) of the step-down chip 161. The second terminal of the ninth capacitor C9 is grounded; the first terminal of the second inductor L2 is connected to the switching pin (SW pin) of the buck converter chip 161 and the first terminal of the tenth capacitor C10; the second terminal of the second inductor L2 is connected to the first terminal of the seventeenth resistor R17, the first terminal of the eleventh capacitor C11, and the first terminal of the nineteenth resistor R19; the first terminal of the tenth capacitor C10 is connected to the switching pin (SW pin) of the buck converter chip 161, and the second terminal of the tenth capacitor C10 is connected to the self-boost pin (BS pin) of the buck converter chip 161; the first terminal of the sixteenth resistor R16 is connected to the feedback pin (FB pin) of the buck converter chip 161, and the sixteenth resistor R1... The second terminal of resistor 6 is connected to the second terminal of the seventeenth resistor R17 and the first terminal of the eighteenth resistor R18; the first terminal of the seventeenth resistor R17 is connected to the first terminal of the eleventh capacitor C11 and the first terminal of the nineteenth resistor R19; the second terminal of the seventeenth resistor R17 is connected to the first terminal of the eighteenth resistor R18; the second terminal of the eighteenth resistor R18 is grounded; the second terminal of the eleventh capacitor C11 is grounded; the second terminal of the nineteenth resistor R19 is connected to the feedback pin (FB0 pin) of output chip 162, the input pin (VDD pin) of output chip 162, and the first terminal of the twelfth capacitor C12; the second terminal of the twelfth capacitor C12 is grounded.The output pin (pin 1) of output chip 162 is connected to the input pin (VBUS pin) of output interface 163; the output pin (DM pin) of output chip 162 is connected to the input pin (D- pin) of output interface 163; the output pin (DP pin) of output chip 162 is connected to the input pin (D+ pin) of output interface 163; and the ground pin (GND pin) of output chip 162 is grounded. The first end of the twentieth resistor R20 is connected to the twelfth pin (Y12 pin) of control unit 11; the second end of the twentieth resistor R20 is connected to the output pin (ID pin) of output interface 163. The ground pin (GND pin) of buck chip 161 is grounded, and the ground pin (GND pin) of output interface 163 is grounded.

[0053] Optionally, the eighth capacitor C8 and the ninth capacitor C9 form a filter circuit, the sixteenth resistor R16 is a current-limiting resistor, and the seventeenth resistor R17 is used to detect the voltage output of the step-down chip 161. Specifically, it detects the voltage value across the seventeenth resistor R17 and feeds it back to the step-down chip 161 through the feedback pin (FB pin). The eighteenth resistor R18, the eleventh capacitor C11, and the twelfth capacitor C12 form a filter circuit. The nineteenth resistor R19 and the twentieth resistor R20 are both current-limiting resistors.

[0054] Specifically, the air pump circuit also includes: a thirteenth capacitor C13 and a fourteenth capacitor C14. The first end of the thirteenth capacitor C13, the first end of the fourteenth capacitor C14, and the thirteenth pin (Y13 pin) of the control unit 11 are grounded; the second end of the thirteenth capacitor C13 is connected to the external power supply (VDD+5V) and the voltage input pin (VCC pin) of the memory chip 17; the second end of the fourteenth capacitor C14 is connected to the external power supply (VDD+5V) and the voltage input pin (VCC pin) of the memory chip 17; the input pins of the memory chip 17 are connected to the fourteenth pin of the control chip 11, specifically, the SCK pin of the memory chip 17 is connected to the Y141 pin of the control chip 11, and the SI pin of the memory chip 17 is connected to the Y142 pin of the control chip 11; the other pins of the memory chip 17 are grounded, specifically, the HOLD-, CS-, SO-, WP-, and GND pins of the memory chip 17 are grounded.

[0055] Optionally, if the thirteenth pin (Y13 pin) of the control unit 11 outputs a high-level signal to the memory chip 17, then the fourteenth pin of the control unit 11 can output a related control signal to the input pin of the memory chip 17 to write recording information into the memory chip 17. If the thirteenth pin (Y13 pin) of the control unit 11 outputs a low-level signal to the memory chip 17, then the input pin of the memory chip 17 outputs recording information to the fourteenth pin of the control unit 11.

[0056] This application provides an air pump circuit that can reverse charge an external electrical device, improving the availability of the air pump. It also provides a storage function to record relevant data, avoiding the need to reset the device every time the air pump is turned on.

[0057] like Figure 5 As shown, Figure 5 This is a topology circuit diagram of an air pump circuit provided in an embodiment of this application. The air pump circuit includes: a control unit 11, a power supply BAT, a first switching unit K1, an air pump motor M, a lighting circuit 18, a third switching unit K3, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, and a voltage detection unit 19. The lighting circuit 18 includes at least one light-emitting diode D0; the voltage detection unit 19 includes: a sixth diode D6, a fifteenth capacitor C15, a sixteenth capacitor C16, a seventeenth capacitor C17, an eighteenth capacitor C18, a twenty-first resistor R21, a twenty-second resistor R22, and a voltage regulator chip 161.

[0058] Specifically, the control unit 11 is connected to the third switch unit K3, and the lighting circuit 18 is connected to the power supply BAT through the third switch unit K3. The control unit 11 is used to output a sixth control signal to the third switch unit K3. The sixth control signal is used to turn on the third switch unit K3. The power supply BAT supplies power to the lighting circuit 18 through the third switch unit K3 so that the lighting circuit 18 can work.

[0059] Furthermore, the voltage detection unit 19 is connected to the control unit 11 and the power supply BAT; the voltage detection unit 19 is used to detect the remaining power of the power supply BAT and output the remaining power value to the control unit 11.

[0060] Specifically, the first end of the ninth resistor R9 is connected to the ninth pin (Y9 pin) of the control unit 11, the second end of the ninth resistor R9 is connected to the first end of the tenth resistor R10 and the first end of the third switch unit K3; the first end of the tenth resistor R10 is connected to the first end of the third switch unit K3, and the second end of the tenth resistor R10 is grounded; the first end of the eleventh resistor R11 is connected to the positive terminal of the power supply BAT, the second end of the eleventh resistor R11 is connected to the positive terminal of each light-emitting diode D0; the second end of the third switch unit K3 is connected to the negative terminal of each light-emitting diode D0, and the third end of the third switch unit K3 is grounded. The anode of the sixth diode D2 is connected to the anode of the power supply BAT. The cathode of the sixth diode D2 is connected to the first terminal of the fifteenth capacitor C15, the first terminal of the sixteenth capacitor C16, the first terminal of the twenty-second resistor R22, and the input pin (IN pin) of the voltage regulator chip 191. The first terminal of the fifteenth capacitor C15 is connected to the first terminal of the twenty-second resistor R22, the first terminal of the sixteenth capacitor C16, and the input pin (IN pin) of the voltage regulator chip 191. The second terminal of the fifteenth capacitor C15 is grounded. The first terminal of the sixteenth capacitor C16 is connected to the first terminal of the twenty-second resistor R22 and the input pin (IN pin) of the voltage regulator chip 191. The second terminal of the sixteenth capacitor C16 is grounded. Grounded; the first end of the seventeenth capacitor C17 is connected to the output pin (OUT pin) of the voltage regulator chip 191, the first end of the eighteenth capacitor C18, and the external power supply (VDD+5V), and the second end of the seventeenth capacitor C17 is grounded; the first end of the eighteenth capacitor C18 is connected to the output pin (OUT pin) of the voltage regulator chip 191 and the external power supply (VDD+5V), and the second end of the eighteenth capacitor C18 is grounded; the ground pin (GND pin) of the voltage regulator chip 191 is grounded; the first end of the twenty-first resistor R21 is connected to the fourteenth pin (Y14 pin) of the control unit 11 and the second end of the twenty-second resistor R22, and the second end of the twenty-first resistor R21 is grounded.

[0061] This application provides an air pump circuit that can be used for lighting; it also provides an air pump circuit for detecting the remaining battery power to remind the user of the battery's usage status.

[0062] like Figure 6 As shown, Figure 6 This is a topology circuit diagram of an air pump circuit provided in an embodiment of this application. The air pump circuit includes: a control unit 11, a power supply BAT, a first switch unit K1, an air motor M, and a display module 20. The display module 20 includes a power supply circuit 21, a drive circuit 22, and a display circuit 23.

[0063] Specifically, the display module 20 is connected to the control unit 11 and the power supply BAT. It should be noted that the power supply circuit 21 is connected to the control unit 1 and the power supply BAT; the drive circuit 22 is connected to the control unit 11, the power supply circuit 21, and the display circuit 23.

[0064] Furthermore, such as Figure 7 As shown, the power supply circuit 21 includes: a 23rd resistor R23, a 24th resistor R24, a fourth switch unit K4, a 25th resistor R25, a 26th resistor R26, and a fifth switch unit K5; the first end of the 23rd resistor R23 is connected to the control unit 11, and the second end of the 23rd resistor R23 is connected to the first end of the 24th resistor R24 ​​and the first end of the fourth switch unit K4; the second end of the 24th resistor R24 ​​is grounded; the second end of the fourth switch unit K4 is connected to the first end of the 25th resistor R25, and the third end of the fourth switch unit K4 is grounded; the second end of the 25th resistor R25 is connected to the first end of the 26th resistor R26 and the first end of the fifth switch unit K5; the second end of the 26th resistor R26 is connected to the external power supply (VDD+5V) and the third end of the fifth switch unit K5; the second end of the fifth switch unit K5 is connected to the drive circuit 22.

[0065] Furthermore, such as Figure 8 As shown, the driving circuit 22 includes: a 27th resistor R27, a 28th resistor R28, a 29th resistor R29, a 19th capacitor C19, a 20th capacitor C20, a 21st capacitor C21, a 22nd capacitor C22, a 23rd capacitor C23, and a driving chip 221.

[0066] For example, the first end of the twenty-seventh resistor R27 is connected to the sixteenth pin (Y16 pin) of the control unit 11, and the second end of the twenty-seventh resistor R27 is connected to the first end of the nineteenth capacitor C19; the first end of the twenty-eighth resistor R28 is connected to the seventeenth pin (Y17 pin) of the control unit 11, and the second end of the twenty-eighth resistor R28 is connected to the first end of the twentieth capacitor C20; the first end of the twenty-ninth resistor R29 is connected to the eighteenth pin (Y18 pin) of the control unit 11, and the second end of the twenty-ninth resistor R29 is connected to the first end of the twenty-first capacitor C21; the second ends of the nineteenth capacitor C19, the twentieth capacitor C20, and the twenty-first capacitor C21 are grounded. The first ends of the twenty-second capacitor C22, the twenty-third capacitor C23, and the GND pin of the driver chip 221 are grounded; the second ends of the twenty-second capacitor C22 and the twenty-third capacitor C23 are connected to the power supply circuit 21; the SEG pin and the GRID pin of the driver chip 221 are connected to the display circuit 23.

[0067] Furthermore, such asFigure 9 As shown, the display circuit 23 includes at least one light-emitting diode (LED).

[0068] For example, the first end of the light-emitting diode (LED) is connected to the SEG pin of the driver chip 221 of the driver circuit 22, and the second end of the LED is connected to the GRID pin of the driver chip 221 of the driver circuit 22.

[0069] This application provides an air pump circuit for displaying various information of the air pump, so that the air pump circuit can output information.

[0070] This application also provides an air pump, including the air pump circuit of any of the above. Please refer to the embodiments of the air pump circuit described above for more information on the air pump.

[0071] It should be noted that, for the sake of simplicity, the aforementioned circuit embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0072] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0073] The above is a description of an air pump circuit and an air pump provided in this application. For those skilled in the art, based on the ideas of the embodiments of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An air pump circuit, characterized in that, The circuit includes: a control unit, a power supply, a first switching unit, and an inflation motor; the control unit is connected to the first switching unit, and the inflation motor is connected to the power supply through the first switching unit. The control unit is used to output a first control signal to the first switch unit, the first control signal is used to turn on the first switch unit, and the power supply supplies power to the air motor through the first switch unit so that the air motor can work. The circuit also includes a charging circuit; the charging circuit is connected to the control unit and the power supply. The control unit is used to output a second control signal to the charging circuit, and the second control signal is used to control the charging circuit to supply power to the power source. The charging circuit includes a charging interface and a boost chip; the charging interface is connected to the power supply through the boost chip, and the boost chip is connected to the control unit. The charging interface is used to connect to an external power source and output the initial charging voltage input from the external power source to the boost chip; the control unit is used to output a third control signal to the boost chip, and the third control signal is used to control the boost chip to boost the initial charging voltage to obtain the target charging voltage and output it to the power source. The charging circuit further includes a charging detection circuit; the charging detection circuit is connected to the charging interface and the control unit; the charging detection circuit is used to detect external power. The charging interface is used to connect to the external power source and output a high-level signal to the charging detection circuit. The high-level signal is used to determine that the charging interface is connected to the external power source. The charging detection circuit is used to output a power access signal to the control unit. The power access signal is used to prompt the control unit that the charging interface is connected to the external power source. When the charging interface is connected to the external power supply, it outputs a high-level signal to the charging detection circuit. The charging detection circuit outputs a high-level signal to the control unit. The control unit outputs the third control signal to the boost chip to turn on the boost chip, thereby enabling conduction between the charging interface and the power supply. The charging interface outputs the initial charging voltage input from the external power supply to the boost chip. The boost chip boosts the received initial charging voltage to obtain the target charging voltage and outputs the target charging voltage to the power supply.

2. The circuit according to claim 1, characterized in that, The charging circuit also includes a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, a first diode, a second diode, and a first inductor; The first terminal of the first capacitor is connected to the output pin of the charging interface, the input pin of the boost chip, the first terminal of the second capacitor, and the first terminal of the first inductor, and the second terminal of the first capacitor is grounded. The first terminal of the second capacitor is connected to the output pin of the charging interface, the input pin of the boost chip, and the first terminal of the first inductor, and the second terminal of the second capacitor is grounded. The first end of the first resistor is connected to the first pin of the boost chip, and the second end of the first resistor is grounded. The first terminal of the third capacitor is connected to the negative terminal of the first diode, the first terminal of the second resistor, the first terminal of the fourth resistor, the first terminal of the fourth capacitor, and the positive terminal of the second diode; the second terminal of the third capacitor is grounded. The first terminal of the fourth capacitor is connected to the negative terminal of the first diode, the first terminal of the second resistor, the first terminal of the fourth resistor, and the positive terminal of the second diode; the second terminal of the third capacitor is grounded. The first end of the second resistor is connected to the negative terminal of the first diode, the first end of the fourth resistor, and the positive terminal of the second diode; the second end of the second resistor is connected to the first end of the third resistor and the feedback pin of the boost chip. The first end of the third resistor is connected to the feedback pin of the boost chip, and the second end of the third resistor is grounded. The first end of the fourth resistor is connected to the negative terminal of the first diode and the positive terminal of the second diode, and the second end of the fourth resistor is grounded. The first end of the first inductor is connected to the input pin of the boost chip, and the second end of the first inductor is connected to the positive terminal of the first diode and the conversion pin of the boost chip. The positive terminal of the first diode is connected to the conversion pin of the boost chip, and the negative terminal of the first diode is connected to the positive terminal of the second diode; The negative terminal of the second diode is connected to the positive terminal of the power supply; The enable pin of the boost chip is connected to the first pin of the control unit, and the ground pin of the boost chip is grounded. The grounding pin of the charging interface is grounded.

3. The circuit according to claim 1, characterized in that, The charging detection circuit includes: a fifth capacitor, a fifth resistor, a sixth resistor, a seventh resistor, and a second switching unit; The first end of the fifth resistor is connected to the output pin of the charging interface, and the second end of the fifth resistor is connected to the first end of the fifth capacitor, the first end of the sixth resistor, and the first end of the second switching unit. The first terminal of the fifth capacitor is connected to the first terminal of the sixth resistor and the first terminal of the second switching unit, and the second terminal of the fifth capacitor is grounded. The first end of the sixth resistor is connected to the first end of the second switching unit, and the second end of the sixth resistor is grounded. The second terminal of the second switching unit is connected to the first terminal of the seventh resistor, and the third terminal of the second switching unit is grounded. The second end of the seventh resistor is connected to the second pin of the control unit.

4. The circuit according to claim 1, characterized in that, The circuit further includes: a pressure detection unit; the pressure detection unit is connected to the control unit; The air pressure detection unit is used to detect the gas pressure value of the cylinder of the air pump and output an air pressure signal to the control unit. The control unit is used to compare the gas pressure value in the air pressure signal with a preset air pressure value. If the gas pressure value reaches the preset air pressure value, it outputs a fourth control signal to the first switch unit. The fourth control signal is used to turn off the first switch unit so that the air pump motor stops working.

5. The circuit according to claim 4, characterized in that, The air pressure detection unit includes: an air pressure sensor, an eighth resistor, and a sixth capacitor; The first end of the pressure sensor is connected to the third pin of the control unit, the second end of the pressure sensor is connected to the first end of the sixth capacitor and the fourth pin of the control unit, the third end of the pressure sensor is connected to the second end of the sixth capacitor and the fifth pin of the control unit, and the fourth end of the pressure sensor is connected to the first end of the eighth resistor and the sixth pin of the control unit. The second terminal of the eighth resistor is grounded.

6. The circuit according to claim 1, characterized in that, The circuit further includes: a temperature detection unit; the temperature detection unit is connected to the control unit; The temperature detection unit is used to detect the temperature value of the power supply and output a temperature signal to the control unit; the control unit is used to compare the temperature value in the temperature signal with a preset temperature value, and if the temperature value reaches the preset temperature value, it outputs a fifth control signal to the first switch unit, and the fifth control signal is used to turn off the first switch unit so that the air motor stops working.

7. The circuit according to claim 6, characterized in that, The first end of the temperature detection unit is connected to the seventh pin of the control unit, and the second end of the temperature detection unit is grounded.

8. The circuit according to claim 1, characterized in that, The circuit further includes: a lighting circuit and a third switching unit; the control unit is connected to the third switching unit, and the lighting circuit is connected to the power supply through the third switching unit; The control unit is used to output a sixth control signal to the third switch unit, the sixth control signal is used to turn on the third switch unit, and the power supply supplies power to the lighting circuit through the third switch unit so that the lighting circuit can work.

9. The circuit according to claim 1, characterized in that, The circuit further includes a discharge circuit; the discharge circuit is connected to the control unit and the power supply. The control unit is used to output a seventh control signal to the discharge circuit, and the seventh control signal is used to control the discharge circuit to adjust the voltage value of the power input voltage to a preset voltage value.

10. The circuit according to claim 9, characterized in that, The discharge circuit includes: a step-down chip, an output chip, and an output interface; the step-down chip is connected to the power supply and the output chip; the output chip is connected to the output interface. The control unit is used to output an eighth control signal to the step-down chip, the eighth control signal being used to control the step-down chip to adjust the voltage value of the power input voltage to a preset voltage value; the power supply outputs voltage to the step-down chip; the step-down chip adjusts the voltage value of the power input voltage to the preset voltage value and outputs the adjusted voltage to the output chip; the output chip outputs the adjusted voltage to the output interface; the output interface outputs the adjusted voltage to an external power device connected to the output interface.

11. The circuit according to claim 1, characterized in that, The circuit further includes: a memory chip; the memory chip is connected to the control unit; The storage chip is used to store the recorded information generated by the control unit.

12. The circuit according to claim 1, characterized in that, The circuit further includes: a voltage detection unit; the voltage detection unit is connected to the control unit and the power supply; The voltage detection unit is used to detect the remaining power of the power supply and output the remaining power value to the control unit.

13. The circuit according to claim 1, characterized in that, The circuit further includes a display module; the display module is connected to the control unit and the power supply.

14. The circuit according to claim 13, characterized in that, The display module includes: a power supply circuit, a driving circuit, and a display circuit; The power supply circuit is connected to the control unit and the power source; The drive circuit is connected to the control unit, the power supply circuit, and the display circuit.

15. The circuit according to claim 1, characterized in that, The circuit further includes: a button unit; the button unit is connected to the control unit and a ground wire; The button unit is used to output control signals to the control unit.

16. An air pump, characterized in that, The air pump includes an air pump circuit as claimed in any one of claims 1 to 15.

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