Power supply switching circuit and electronic atomization equipment

Abstract

The invention provides a power supply switching circuit and electronic atomization equipment, and belongs to the technical field of electronics. The power supply switching circuit comprises a first battery, a power supply switching unit, an atomization unit, a first control unit and a second battery. The first battery, the power supply switching unit, the atomization unit and the first control unit are arranged in the first device, and the second battery is arranged in the second device; the output end of the first battery is connected with the first end of the power supply switching unit; the second end of the power supply switching unit is connected with the input end of the atomization unit and the output end of the second battery, and the third end of the power supply switching unit is connected with the first control end of the first control unit. According to the invention, the adjustment range of the power supply voltage at the two ends of the heating load can be expanded, so that the electronic atomization equipment can provide various atomization modes.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to a power supply switching circuit and an electronic atomization device. Background Art

[0002] With the rapid development of electronic technology, various electronic products have become popular in people's work and life, such as electronic atomization equipment that heats and atomizes the atomization matrix to form an aerosol.

[0003] In order to improve the battery life of electronic atomization devices, related technologies use an external charging module to power the electronic atomization devices, that is, when the external charging module is combined with the electronic atomization device, the external charging module can charge the electronic atomization device; wherein, the electronic atomization device has a heating load, and the power supply of the heating load always comes from the built-in battery cell of the electronic atomization device. Therefore, the adjustment range of the power supply voltage at both ends of the heating load is limited, and it is therefore difficult for the electronic atomization device to provide multiple atomization modes, such as low power mode, normal mode, high power mode, etc. Summary of the invention

[0004] The purpose of this application is to provide a power supply switching circuit and an electronic atomization device, which can expand the adjustment range of the power supply voltage at both ends of the heating load to support the electronic atomization device to provide multiple atomization modes.

[0005] The embodiment of the present application is implemented as follows:

[0006] In a first aspect of an embodiment of the present application, a power supply switching circuit is provided for an electronic atomization device, wherein the electronic atomization device comprises a first device and a second device that are detachably connected, and the power supply switching circuit comprises: a first battery, a power switching unit, an atomization unit, a first control unit, and a second battery; the first battery, the power switching unit, the atomization unit, and the first control unit are arranged in the first device, and the second battery is arranged in the second device;

[0007] The output end of the first battery is connected to the first end of the power switching unit;

[0008] The second end of the power switching unit is used to connect to the input end of the atomizing unit and the output end of the second battery respectively, and the third end of the power switching unit is connected to the first control end of the first control unit; the power switching unit is used to output the electric energy input by the first battery to the atomizing unit when it is turned on; the first control unit is used to control the power switching unit to be turned off or on; the second battery is used to output electric energy to the atomizing unit when the first device is connected to the second device;

[0009] The atomization unit is used to be powered on and operated under the action of the electric energy output by the first battery or the electric energy output by the second battery.

[0010] In one embodiment of the present application, the first control unit is specifically used to control the power switching unit to be turned on when the first device is disconnected from the second device, and to control the power switching unit to be turned off when the first device is connected to the second device.

[0011] In one embodiment of the present application, the power switching unit at least includes: a first switch tube, a second switch tube, and a third switch tube;

[0012] The first electrode of the first switch tube is connected to the output end of the first battery, the second electrode of the first switch tube is connected to the first electrode of the second switch tube, and the third electrode of the first switch tube is connected to the second electrode of the second switch tube and the first electrode of the third switch tube respectively;

[0013] The third pole of the second switch tube is used to be connected to the input end of the atomization unit and the output end of the second battery respectively;

[0014] The second electrode of the third switch tube is connected to the first control end of the first control unit, and the third electrode of the third switch tube is grounded;

[0015] The third switch tube is used to be turned on under the control of the first control unit, so that the first switch tube and the second switch tube are turned on.

[0016] In one embodiment of the present application, the power switching unit further includes: a first resistor;

[0017] The first end of the first resistor is connected to the second electrode of the first switch tube and the first electrode of the second switch tube respectively, and the second end of the first resistor is connected to the third electrode of the first switch tube, the second electrode of the second switch tube and the first electrode of the third switch tube respectively.

[0018] In one embodiment of the present application, the atomization unit at least includes: a fourth switch tube, a fifth switch tube and an atomization load;

[0019] The first electrode of the fourth switch tube is respectively used to connect to the second end of the power switching unit, the output end of the second battery and the first electrode of the fifth switch tube, the second electrode of the fourth switch tube is connected to the first electrode of the fifth switch tube, and the third electrode of the fourth switch tube is connected to the input end of the atomization load;

[0020] The second electrode of the fifth switch tube is connected to the second control end of the first control unit, and the third electrode of the fifth switch tube is grounded;

[0021] The fifth switch tube is used to be turned on under the control of the first control unit so as to turn on the fourth switch tube.

[0022] In one embodiment of the present application, the atomization unit further includes: a second resistor;

[0023] The first end of the second resistor is connected to the first electrode of the fourth switch tube, and the second end of the second resistor is respectively connected to the second electrode of the fourth switch tube and the first electrode of the fifth switch tube.

[0024] In one embodiment of the present application, the power supply switching circuit further includes: an output control unit, the output control unit being arranged in the second device;

[0025] The first end of the output control unit is connected to the output end of the second battery, and the second end of the output control unit is used to connect to the second end of the power switching unit and the input end of the atomization unit respectively;

[0026] The output control unit is configured to be turned on or off when the first device is connected to the second device, and to be turned off when the first device is not connected to the second device.

[0027] In one embodiment of the present application, the power supply switching circuit further includes: a second control unit, the second control unit being disposed in the second device;

[0028] The control end of the second control unit is connected to the third end of the output control unit;

[0029] The second control unit is at least used to control the output control unit to be turned on or off.

[0030] A second aspect of an embodiment of the present application provides an electronic atomization device, which includes any power supply switching circuit provided in the first aspect and a first device, wherein the first device is an electronic atomizer for heating and atomizing an atomization matrix to form an aerosol.

[0031] According to a third aspect of an embodiment of the present application, an electronic atomization device is provided, which includes any power supply switching circuit, a first device and a second device provided in the first aspect above, wherein the first device is an electronic atomizer for heating and atomizing an atomization matrix to form an aerosol; and the second device is a charging host for providing electrical energy to the electronic atomizer.

[0032] The beneficial effects of the embodiments of the present application include:

[0033] The embodiment of the present application provides a power supply switching circuit, in which a first battery, a power supply switching unit, an atomization unit, a first control unit and a second battery are arranged. Specifically, the first battery, the power supply switching unit, the atomization unit and the first control unit are arranged in a first device, and the second battery is arranged in a second device.

[0034] Among them, by controlling the on or off of the power switching unit through the first control unit, the first battery can be controlled by the first control unit to turn on the power switching unit to supply power to the atomization unit when the first device is not connected to the second device, and the first battery can be controlled to turn off the power switching unit when the first device is connected to the second device and the second battery can supply power to the atomization unit so that the first battery cannot supply power to the atomization unit. In this way, the second battery in the second device can supply power to the atomization unit in the first device, so as to expand the adjustment range of the power supply voltage at both ends of the atomization unit (i.e., the heating load) through the second battery, thereby supporting the electronic atomization device to provide multiple atomization modes.

[0035] In this way, the adjustment range of the power supply voltage at both ends of the heating load can be expanded to support the purpose of the electronic atomization device providing multiple atomization modes. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 A schematic diagram of the structure of a first power supply switching circuit provided in an embodiment of the present application;

[0038] Figure 2 A schematic diagram of the structure of a second power supply switching circuit provided in an embodiment of the present application;

[0039] Figure 3 A schematic diagram of the structure of a third power supply switching circuit provided in an embodiment of the present application;

[0040] Figure 4 A schematic diagram of the structure of a fourth power supply switching circuit provided in an embodiment of the present application;

[0041] Figure 5 A schematic diagram of the structure of a fifth power supply switching circuit provided in an embodiment of the present application;

[0042] Figure 6 A schematic diagram of the structure of a sixth power supply switching circuit provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0046] In the description of the present application, it should be noted that the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0047] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] In the related art, there are more and more electronic atomization devices with external power banks, including an atomization bomb for heating and atomizing the atomization matrix and a charging host for charging the atomization bomb, wherein the atomization bomb and the charging host are detachably connected and are respectively provided with batteries for providing electrical energy, and the atomization bomb also includes an atomization device for heating and atomizing the atomization matrix. Specifically, when the atomization bomb and the charging host are separated, the battery in the atomization bomb can power the atomization device in the atomization bomb; when the atomization bomb and the charging host are connected, the charging host charges the battery in the atomization bomb.

[0049] However, in this solution, the battery cells in the charging host can only charge the batteries in the atomizer bomb, but cannot directly power the atomizer device in the atomizer bomb. Since the atomizer bomb has a small space to accommodate the battery, the volume and capacity of the battery in the atomizer bomb are small, and its output power is also small, and the atomization taste of the atomizer device is relatively poor. The internal space of the charging host structure is large, and the volume and capacity of the battery cells that can be accommodated are large, which has the conditions for outputting a large power. Therefore, it is urgent to provide a suitable power supply switching circuit so that the charging host can directly power the atomizer device in the atomizer bomb to achieve high-power atomization.

[0050] To this end, the embodiment of the present application provides a power supply switching circuit, by arranging a first battery, a power supply switching unit, an atomization unit, a first control unit and a second battery in the power supply switching circuit; and the first battery, the power supply switching unit, the atomization unit and the first control unit are arranged in a first device, and the second battery is arranged in a second device; specifically, the output end of the first battery is connected to the first end of the power supply switching unit; the second end of the power supply switching unit is respectively connected to the input end of the atomization unit and the output end of the second battery, and the third end of the power supply switching unit is connected to the first control end of the first control unit. In this way, the purpose of the first battery in the first device supplying power to the atomization unit can be achieved when the first device and the second device are separated, and the purpose of the second battery in the second device supplying power to the atomization unit can be achieved when the first device and the second device are combined.

[0051] The present application embodiment is described by taking the power supply switching circuit used in the electronic atomization device as an example, but it does not mean that the present application embodiment can only be used for power supply switching in the electronic atomization device.

[0052] The power supply switching circuit provided in the embodiment of the present application is explained in detail below.

[0053] Figure 1 This is a schematic diagram of the structure of a power supply switching circuit provided by the present application. Figure 1 An embodiment of the present application provides a power supply switching circuit, which can be applied to an electronic atomization device. The electronic atomization device may include a first device and a second device that are detachably connected. Specifically, the first device may be an electronic atomizer for heating and atomizing an atomization matrix to form an aerosol, and the second device may be a charging host for providing power to the electronic atomizer.

[0054] The power supply switching circuit includes: a first battery 101 , a power supply switching unit 102 , an atomization unit 103 , a first control unit 104 and a second battery 201 .

[0055] The first battery 101 , the power switching unit 102 , the atomization unit 103 and the first control unit 104 are disposed in the first device D, and the second battery 201 is disposed in the second device Z.

[0056] The output end of the first battery 101 is connected to the first end of the power switching unit 102 .

[0057] The second end of the power switching unit 102 is used to connect to the input end of the atomization unit 103 and the output end of the second battery 201 , respectively. The third end of the power switching unit 102 is connected to the first control end of the first control unit 104 .

[0058] The power switching unit 102 is used to output the electric energy input from the first battery 101 to the atomization unit 103 when it is turned on.

[0059] The first control unit 104 is used to control the power switching unit 102 to be turned on or off.

[0060] The second battery 201 is used to output electric energy to the atomization unit 103 when the first device D is connected to the second device Z.

[0061] The atomization unit 103 is used to be powered on and operated under the action of the electric energy output by the first battery 101 or the electric energy output by the second battery 201 .

[0062] In this embodiment, the first device D and the second device Z can be different components used in the same electronic device. For example, if the power supply switching circuit is used in an electronic atomization device, the first device D can be an atomizer bomb used to store atomized liquid, detect whether to atomize, atomize the atomized liquid, and control the atomization rate, and the second device Z can be an atomizer body used to realize power supply, data storage, display, and other functions, and this embodiment of the application does not limit this.

[0063] In this embodiment, the first battery 101 and the second battery 201 may be any possible battery, such as a lithium battery, a carbon-zinc battery, etc. Generally, the battery capacity of the second battery 201 is greater than the battery capacity of the first battery 101. This embodiment of the application does not limit this.

[0064] In this embodiment, the first control unit 104 is specifically used to control the power switching unit 102 to be turned on when the first device D is disconnected from the second device Z, and to control the power switching unit 102 to be turned off when the first device D is connected to the second device Z.

[0065] The first control unit 104 can specifically control the power switching unit 102 to be turned off or on accurately according to the connection status of the first device D and the second device Z, and the specific working conditions of the first battery 101 and the second battery 201 .

[0066] It is understandable that when the first device D is not connected to the second device Z, the second battery 201 is not connected to the input end of the atomization unit 103 and the second end of the power switching unit 102, and the atomization unit 103 can only be powered by the first battery 101.

[0067] However, when the first device D is connected to the second device Z, the second battery 201 is connected to the input end of the atomization unit 103 and the second end of the power switching unit 102. At this time, the atomization unit 103 can be powered by the second battery 201, and the power switching unit 102 can be controlled by the first control unit 104 to shut down. In this way, the electric energy output by the second battery 201 can be prevented from flowing back into the first battery 101.

[0068] Specifically, the first battery 101 can be used to output electric energy to the atomization unit 103 through the power switching unit 102 , and specifically can output electric energy to the atomization unit 103 when the power switching unit 102 is turned on.

[0069] When the first device D is connected to the second device Z, the second battery 201 can be connected to the input end of the atomization unit 103 . At this time, the second battery 201 can output electrical energy to the atomization unit 103 .

[0070] Since the first device D includes both the atomization unit 103 and the first battery 101, the space for accommodating the first battery 101 is small, the volume and capacity of the first battery 101 are small, and its output power is also small, so the atomization taste of the atomization unit 103 is relatively poor. The second device Z has a larger internal space, and the volume and capacity of the second battery 201 that can be accommodated are large, and it has the conditions for outputting a larger power. Therefore, the second device Z can directly power the atomization unit 103 in the first device D, and can achieve high-power atomization to improve the atomization taste.

[0071] In this embodiment, the power switching unit 102 may include any device capable of cutting off the power transmission path between the first battery 101 and the atomization unit 103 , for example, the power switching unit 102 may include any possible controllable switch.

[0072] In this embodiment, the first control unit 104 may be any component having functions of detection, identification, processing, control, etc., for example, a microcontroller unit (MCU) or a digital signal processor (DSP).

[0073] Specifically, the first control unit 104 can be used to control the power switching unit 102 to turn on when the first device D is not connected to the second device Z and it is determined that atomization is currently required. If the first device D is not connected to the second device Z, but atomization is not currently required, the first control unit 104 can control the power switching unit 102 to turn off.

[0074] In addition, the first control unit 104 can also be used to detect the connection status of the first device D and the second device Z. This can be implemented in any possible way, for example, by detecting the voltage of some pins in the first device D to determine whether the first device D is connected to the second device Z, which is not limited in the embodiment of the present application.

[0075] In addition, the first control unit 104 can also be used to determine whether atomization is required by detecting the air flow speed inside the first device D, or can determine whether to perform atomization operation in any other possible way, which is not limited in this embodiment of the present application.

[0076] As can be seen from the above, the first control unit 104 can control the power switching unit 102 to be turned on when the first device D is not connected to the second device Z and the atomization unit 103 currently needs to atomize. It can also control the power switching unit 102 to be turned on when the first device D is connected to the second device Z and the atomization unit 103 currently needs to atomize but the second battery 201 cannot supply power.

[0077] In addition, the first control unit 104 can control the power switching unit 102 to turn off when the first device D is connected to the second device Z and the second battery 201 can supply power. It can also control the power switching unit 102 to turn off when the first device D is not connected to the second device Z but the atomization unit 103 does not need to atomize at present. It can also control the power switching unit 102 to turn off when the first device D is not connected to the second device Z but the first battery 101 cannot supply power.

[0078] The various situations listed above are only used as examples, and do not mean that the first control unit 104 in the power supply switching circuit provided in the embodiment of the present application can only control the power supply switching unit 102 in the various examples listed above. When applying the power supply switching circuit, the first control unit 104 can be set or adjusted accordingly according to actual needs, and the embodiment of the present application does not limit this.

[0079] In this embodiment, the atomization unit 103 may be a device for atomizing the atomized liquid. The atomization unit 103 may specifically realize the atomization function by heating, pressurizing, ultrasonic waves, etc., which is not limited in this embodiment of the present application.

[0080] It is worth noting that in order to better introduce the power supply switching circuit provided in the embodiment of the present application, the working principle of the circuit is introduced as follows:

[0081] When the first device D and the second device Z are separated (ie, the first device D and the second device Z are not connected), the second battery 201 is not connected to the input end of the atomization unit 103. At this time, the atomization unit 103 can only be powered by the first battery 101 inside the first device D.

[0082] Furthermore, if atomization is currently required, the first control unit 104 can output a corresponding conduction signal to the power switching unit 102 to control the power switching unit 102 to be turned on, so that the first battery 101 can supply power to the atomization unit 103 through the power switching unit 102 to realize the atomization function.

[0083] If atomization is not currently required, the first control unit 104 may not output a conduction signal to the power switching unit 102 or output a control signal for controlling the power switching unit 102 to shut down, so that the power switching unit 102 is shut down, thereby causing the first battery 101 to stop supplying power to the atomization unit 103, and the atomization unit 103 enters a power-down sleep state.

[0084] When the first device D and the second device Z are combined (that is, the first device D and the second device Z are connected), the second battery 201 is connected to the input end of the atomization unit 103. At this time, the atomization unit 103 can be powered by the first battery 101 inside the first device D or the second battery 201 inside the second device Z.

[0085] In this case, the first control unit 104 can continuously output a control signal to the power switching unit 102 for controlling the power switching unit 102 to shut down, so that the power switching unit 102 remains shut down. In this way, it is possible to avoid the problem that while the second battery 201 supplies power to the atomization unit 103, the first battery 101 also supplies power to the atomization unit 103, or the electric energy output by the second battery 201 flows back into the first battery 101.

[0086] In addition, in one possible manner, the first control unit 104 can also detect the working parameters of the second battery 201 in any possible manner. If the first control unit 104 detects that the power of the second battery 201 is low or the second battery 201 cannot supply power to the atomization unit 103, the first control unit 104 can control the power switching unit 102 to be turned on even when the first device D is connected to the second device Z. This embodiment of the present application is not limited to this.

[0087] It is worth noting that, in this embodiment, the first control unit 104 controls the power switching unit 102 to be turned on or off, so that the first battery 101 can supply power to the atomizing unit 103 through the power switching unit 102 when the first device D is not connected to the second device Z, and the first battery 101 can be unable to supply power to the atomizing unit 103 when the first device D is connected to the second device Z and the second battery 201 can supply power to the atomizing unit 103. In this way, the purpose of making the second battery 201 in the second device Z supply power to the atomizing unit 103 in the first device D can be achieved.

[0088] In the embodiment of the present application, the first battery 101, the power switching unit 102, the atomization unit 103, the first control unit 104 and the second battery 201 are arranged in the power switching circuit. Specifically, the first battery 101, the power switching unit 102, the atomization unit 103 and the first control unit 104 are arranged in the first device D, and the second battery 201 is arranged in the second device Z.

[0089] Among them, by controlling the power switching unit 102 to be turned on or off by the first control unit 104, the first battery 101 can be turned on to supply power to the atomizing unit 103 when the first device D is not connected to the second device Z by the first control unit 104, and can be turned off by controlling the power switching unit 102 to prevent the first battery 101 from supplying power to the atomizing unit 103 when the first device D is connected to the second device Z and the second battery 201 can supply power to the atomizing unit 103. In this way, the purpose of making the second battery 201 in the second device Z supply power to the atomizing unit 103 in the first device D can be achieved.

[0090] In this way, when the first device D and the second device Z are separated, the first battery 101 in the first device D can power the atomization unit 103, and when the first device D and the second device Z are combined, the second battery 201 in the second device Z can power the atomization unit 103.

[0091] In addition, when the first device D is connected to the second device Z, the power switching unit 102 can be turned off to prevent the power output by the second battery 201 from flowing back to the first battery 101 and thus damaging the first battery 101. In this way, the safety of the power switching circuit can be improved.

[0092] Furthermore, when the first control unit 104 detects that the second battery 201 cannot supply power to the atomization unit 103, even if the first device D is connected to the second device Z, the first control unit 104 can control the power switching unit 102 to be turned on, thereby improving the reliability of the power switching circuit.

[0093] For a possible implementation, see Figure 2 The power switching unit 102 at least includes: a first switch tube Q1, a second switch tube Q2, and a third switch tube Q3.

[0094] The first electrode of the first switch tube Q1 is connected to the output end of the first battery 101, the second electrode of the first switch tube Q1 is connected to the first electrode of the second switch tube Q2, and the third electrode of the first switch tube Q1 is respectively connected to the second electrode of the second switch tube Q2 and the first electrode of the third switch tube Q3.

[0095] The third electrode of the second switch tube Q2 is used to be connected to the input end of the atomization unit 103 and the output end of the second battery 201 respectively.

[0096] A second electrode of the third switch tube Q3 is connected to the first control terminal of the first control unit 104, and a third electrode of the third switch tube is grounded.

[0097] The third switch tube Q3 is used to be turned on under the control of the first control unit 104, so that the first switch tube Q1 and the second switch tube Q2 are turned on.

[0098] In this embodiment, the first switch tube Q1 and the second switch tube Q2 may be P-channel switch tubes, such as PMOS tubes.

[0099] In this embodiment, the third switch tube Q3 may be an NPN transistor, which is not limited in this embodiment of the present application.

[0100] For example, if the first switch tube Q1 and the second switch tube Q2 are PMOS tubes, continue to refer to Figure 2 , the first electrode, the second electrode and the third electrode of the first switch tube Q1 can be the drain, source and gate of the first switch tube Q1 respectively, and the first electrode, the second electrode and the third electrode of the second switch tube Q2 can be the source, gate and drain of the second switch tube Q2 respectively. If the third switch tube Q3 is an NPN transistor, then the first electrode, the second electrode and the third electrode of the third switch tube Q3 can be the collector, base and emitter of the third switch tube Q3 respectively.

[0101] It can be understood that the third switch tube Q3 can be specifically used to output a corresponding control signal to the second pole (base) of the third switch tube Q3 to control the third switch tube Q3 to be turned on when the first control unit 104 determines that the first battery 101 is currently required to power the atomization unit 103.

[0102] Furthermore, after the third switch tube Q3 is turned on, the third electrode (gate) of the first switch tube Q1 and the second electrode (gate) of the second switch tube Q2 can be grounded through the third switch tube Q3, so that the voltage on the third electrode of the first switch tube Q1 and the second electrode of the second switch tube Q2 is depressed, thereby turning on the first switch tube Q1 and the second switch tube Q2. In this way, the first battery 101 can supply power to the atomization unit 103 through the first switch tube Q1 and the second switch tube Q2.

[0103] It is worth noting that the first switch tube Q1 and the second switch tube Q2 have body diodes. By connecting the second pole (source) of the first switch tube Q1 with the first pole (source) of the second switch tube Q2, when the second battery 201 supplies power to the atomization unit 103 and the first switch tube Q1 and the second switch tube Q2 are turned off, although the electric energy output by the second battery 201 can flow to the first switch tube Q1 through the body diode of the second switch tube Q2, the body diode of the first switch tube Q1 can prevent the electric energy from flowing into the first battery 101. In this way, the purpose of preventing backflow can be achieved.

[0104] In a possible implementation, see Figure 2 , the power switching unit 102 also includes: a first resistor R1.

[0105] The first end of the first resistor R1 is respectively connected to the second electrode of the first switch tube Q1 and the first electrode of the second switch tube Q2, and the second end of the first resistor R1 is respectively connected to the third electrode of the first switch tube Q1, the second electrode of the second switch tube Q2, and the first electrode of the third switch tube Q3.

[0106] In this embodiment, the first resistor R1 can be used as a pull-up resistor to prevent the first switch tube Q1, the second switch tube Q2, and the third switch tube Q3 from being mis-conducted due to some interference current or interference signal when the first battery 101 does not output power to the atomization unit 103.

[0107] In this way, the reliability and safety of the power switching unit 102 and the power switching circuit can be improved.

[0108] For a possible implementation, see Figure 3 The atomization unit 103 at least includes: a fourth switch tube Q4 , a fifth switch tube Q5 and an atomization load 1031 .

[0109] The first electrode of the fourth switch tube Q4 is respectively used to connect to the second end of the power switching unit 102, the output end of the second battery 201 and the first electrode of the fifth switch tube Q5, the second electrode of the fourth switch tube Q4 is connected to the first electrode of the fifth switch tube Q5, and the third electrode of the fourth switch tube Q4 is connected to the input end of the atomization load 1031.

[0110] A second electrode of the fifth switch tube Q5 is connected to the second control terminal of the first control unit 104 , and a third electrode of the fifth switch tube Q5 is grounded.

[0111] The fifth switch tube Q5 is used to be turned on under the control of the first control unit 104 so as to turn on the fourth switch tube Q4.

[0112] In this embodiment, the atomization load 1031 (ie, the heating load) may be a heating device such as a heating wire, or other pressurizing devices and / or ultrasonic devices capable of atomizing the atomized liquid. This embodiment of the application does not limit this.

[0113] In this embodiment, the fourth switch tube Q4 may be a P-channel switch tube, such as a PMOS tube, etc. The fifth switch tube Q5 may be an NPN transistor, which is not limited in this embodiment of the present application.

[0114] For example, if the fourth switch tube Q4 is a PMOS tube, continue to refer to Figure 3 , the first electrode, the second electrode and the third electrode of the fourth switch tube Q4 can be the source, the gate and the drain of the fourth switch tube Q4 respectively. If the fifth switch tube Q5 is an NPN type transistor, then the first electrode, the second electrode and the third electrode of the fifth switch tube Q5 can be the collector, the base and the emitter of the fifth switch tube Q5 respectively.

[0115] It can be understood that the fifth switch tube Q5 can be specifically used to output a corresponding control signal to the second pole (base) of the fifth switch tube Q5 to control the conduction of the fifth switch tube Q5 when the first control unit 104 determines that the current atomization unit 103 needs to be powered on and perform atomization operation on the atomized liquid.

[0116] Furthermore, after the fifth switch tube Q5 is turned on, the second electrode (gate) of the fourth switch tube Q4 can be grounded through the fifth switch tube Q5, so that the voltage on the second electrode of the fourth switch tube Q4 is depressed, thereby turning on the fourth switch tube Q4. In this way, the first battery 101 or the second battery 201 can supply power to the atomization load 1031 through the fourth switch tube Q4.

[0117] Specifically, the first control unit 104 can output a corresponding pulse width modulation (PWM) signal to the fifth switch tube Q5, and adjust the duty cycle of the PWM signal to control the conduction degree of the fifth switch tube Q5, thereby controlling the current output by the fourth switch tube Q4 to adjust the power of the atomization load 1031. In this way, the atomization rate and power of the atomization unit 103 can be adjusted.

[0118] In a possible implementation, see Figure 3, the atomization unit 103 also includes: a second resistor R2.

[0119] A first end of the second resistor R2 is connected to a first electrode of the fourth switch tube Q4 , and a second end of the second resistor R2 is connected to a second electrode of the fourth switch tube Q4 and a first electrode of the fifth switch tube Q5 .

[0120] In this embodiment, the second resistor R2 can be used for voltage division to prevent the electric energy output by the first battery 101 or the second battery 201 from damaging the second electrode of the fourth switch tube Q4 and the first electrode of the fifth switch tube Q5.

[0121] For a possible implementation, see Figure 4 The power supply switching circuit also includes: an output control unit 202, and the output control unit 202 is arranged in the second device Z.

[0122] The first end of the output control unit 202 is connected to the output end of the second battery 201 , and the second end of the output control unit 202 is used to connect to the second end of the power switching unit 102 and the input end of the atomization unit 103 .

[0123] The output control unit 202 is used to be turned on or off when the first device D is connected to the second device Z, and to be turned off when the first device D is not connected to the second device Z.

[0124] In this embodiment, the output control unit 202 may include any device capable of cutting off the power transmission path between the second battery 201 and the atomization unit 103 , for example, the output control unit 202 may include any possible controllable switch.

[0125] Specifically, the output control unit 202 can remain in the off state when the first device D is not connected to the second device Z. In addition, when the first device D is connected to the second device Z, if the current atomization unit 103 needs to be powered on to perform an atomization operation on the atomized liquid, the output control unit 202 can be switched to the on state; if the current atomization unit 103 does not need to be powered on, the output control unit 202 can continue to remain in the off state.

[0126] In this way, the output control unit 202 can be controlled to be turned on when the second battery 201 needs to output electric energy, so that the second battery 201 supplies power to the atomization unit 103 through the output control unit 202. In addition, when the first device D is separated from the second device Z, or the atomization unit 103 does not need to be powered on, the output control unit 202 can be controlled to be turned off to improve the safety of the second device Z.

[0127] For a possible implementation, see Figure 5, The power switching circuit further includes: a second control unit 203, the second control unit 203 is disposed in the second device Z.

[0128] The control end of the second control unit 203 is connected to the third end of the output control unit 202 .

[0129] The second control unit 203 is at least used to control the output control unit 202 to be turned on or off.

[0130] In this embodiment, the second control unit 203 may be any processing element having functions of detection, identification, processing, control, etc., such as an MCU or a DSP, which is not limited in this embodiment of the present application.

[0131] Specifically, the second control unit 203 can be used to control the output control unit 202 to turn on when the second battery 201 needs to output electrical energy, and to control the output control unit 202 to turn off when the first device D is separated from the second device Z or the atomization unit 103 does not need to be powered on.

[0132] In addition, the second control unit 203 can also be used to detect the working parameters of the second battery 201, such as the power of the second battery 201, the output voltage, etc. And when the power of the second battery 201 is low (or it is determined that the second battery 201 triggers the over-discharge protection), the output control unit 202 is controlled to be turned off. In addition, the second control unit 203 can also send the working parameters of the second battery 201 to the first control unit 104, so that the first control unit 104 can control the power switching unit 102 to be turned on when the power of the second battery 201 is low or the second battery 201 cannot supply power to the atomization unit 103, and the first battery 201 supplies power to the atomization unit 103.

[0133] In this way, the practicality and flexibility of the power supply switching circuit can be improved.

[0134] In a possible implementation, the output control unit 202 includes: a sixth switch tube and a seventh switch tube.

[0135] The first electrode of the sixth switch tube is connected to the output end of the second battery 201 and the first electrode of the seventh switch tube respectively, the second electrode of the sixth switch tube is used to connect to the input end of the atomization unit 103, and the third electrode of the sixth switch tube is connected to the first electrode of the seventh switch tube.

[0136] The second electrode of the seventh switch tube is connected to the control end of the second control unit 203, and the third electrode of the seventh switch tube is grounded.

[0137] The seventh switch tube is used to be controlled to be turned on by the second control unit 203 when the first device D is connected to the second device Z, so that the sixth switch tube is turned on.

[0138] In this embodiment, the sixth switch tube may be a P-channel switch tube, such as a PMOS tube.

[0139] In this embodiment, the seventh switch tube may be an NPN transistor or an N-channel switch tube, which is not limited in this embodiment of the present application.

[0140] For example, if the sixth switch tube is a PMOS tube Q6 and the seventh switch tube is an NMOS tube Qa, see Figure 5 The first electrode, the second electrode and the third electrode of the PMOS transistor Q6 can be the source, the drain and the gate of the PMOS transistor Q6 respectively. Then the first electrode, the second electrode and the third electrode of the NMOS transistor Qa can be the drain, the gate and the source of the NMOS transistor Qa respectively.

[0141] For example, if the sixth switch tube is a PMOS tube Q6 and the seventh switch tube is an NPN transistor Qb, see Figure 5 , the first electrode, the second electrode and the third electrode of the PMOS transistor Q6 can be the source, the drain and the gate of the PMOS transistor Q6 respectively. Then the first electrode, the second electrode and the third electrode of the NPN transistor Qb can be the collector, the base and the emitter of the NPN transistor Qb respectively.

[0142] It can be understood that the seventh switch tube can be specifically used for the case where the second control unit 203 determines that the first device D and the second device Z are connected and the current atomization unit 103 needs to be powered on, and the second control unit 203 outputs a corresponding control signal to the second electrode (base) of the seventh switch tube to control the seventh switch tube to be turned on.

[0143] Furthermore, after the seventh switch tube is turned on, the third electrode (gate) of the sixth switch tube can be grounded through the seventh switch tube, so that the voltage on the third electrode of the sixth switch tube is depressed, thereby turning on the sixth switch tube. In this way, the second battery 201 can supply power to the atomization unit 103 through the sixth switch tube.

[0144] Specifically, the second control unit 203 can output a corresponding PWM signal to the seventh switch tube, and adjust the duty cycle of the PWM signal to control the conduction degree of the seventh switch tube, thereby controlling the current output by the sixth switch tube to adjust the power of the atomization unit 103. In this way, the purpose of adjusting the atomization rate of the atomization unit 103 can be achieved.

[0145] In a possible implementation, see Figure 5 or Figure 6 The output control unit 202 also includes: a third resistor R3.

[0146] A first end of the third resistor R3 is connected to the first electrode of the sixth switch tube and the output end of the second battery 201 respectively, and a second end of the third resistor R3 is connected to the third electrode of the sixth switch tube and the first electrode of the seventh switch tube respectively.

[0147] In this embodiment, the third resistor R3 can be used for voltage division to prevent the second battery 201 from outputting a large current and damaging the third electrode of the sixth switch tube and the first electrode of the seventh switch tube.

[0148] In this way, the safety of the output control unit 202 and the second device Z can be improved.

[0149] In this embodiment, the first device D includes a first display unit, and the first control unit 104 is used to control the first display unit to display information, and / or the second device Z includes a second display unit, and the second control unit 203 is used to control the second display unit to display information;

[0150] The information displayed by the first display unit includes the power level of the first battery 101, the connection status of the first device D and the second device Z (including the connection of the first device D and the second device Z, the disconnection of the first device D and the second device Z), the usage information of the electronic atomization device (such as the usage amount of the atomization substrate), etc.;

[0151] The information displayed by the second display unit includes the power level of the second battery 201, the connection status of the first device D and the second device Z (including the connection between the first device D and the second device Z, the disconnection between the first device D and the second device Z), the usage information of the electronic atomization device (such as the usage amount of the atomization matrix), etc.

[0152] In this embodiment, the first device D includes an airflow sensor, and the first control unit 104 controls the first battery 101 to supply power to the atomization load 1031 based on a signal from the airflow sensor.

[0153] In this embodiment, the second control unit 203 and the first control unit 104 can communicate with each other. When the second control unit 203 receives a user instruction (an instruction that the second battery 201 supplies power to the first battery 101), the second control unit 203 controls the first control unit 104 to turn off the fourth switch tube Q4 and the fifth switch tube Q5, and turn on the charging circuit (not shown in the figure), through which power is supplied to the first battery 101.

[0154] It should be noted that the above embodiments are merely examples, and do not mean that the power supply switching circuit provided in the embodiments of the present application can only be configured in the manner listed in the above embodiments, nor does it mean that the power supply switching circuit can only include the various components provided in the embodiments of the present application. For example, the power supply switching circuit can also include other current detection devices, voltage detection devices, charging interfaces, data storage devices, and any other possible devices, and the embodiments of the present application do not limit this.

[0155] The following is a description of an electronic atomization device including the power supply switching circuit provided in the present application. The electronic atomization device and any of the above-mentioned power supply switching circuits have the same design concept. The specific implementation process and technical effects are mentioned above and will not be repeated below.

[0156] An embodiment of the present application provides an electronic atomization device, which includes the power supply switching circuit provided by any of the above embodiments and the above-mentioned first device D.

[0157] An embodiment of the present application provides an electronic atomization device, which includes the power supply switching circuit provided in any of the above embodiments, the above first device D and the above second device Z.

[0158] Optionally, the first device D may be an electronic atomizer for heating and atomizing the atomization substrate to form an aerosol.

[0159] The second device Z may be a charging host for providing electrical energy to the electronic atomizer.

[0160] Since the electronic atomizer includes both the atomizer and the battery, the space for accommodating the battery is small, the volume and capacity of the battery are small, and its output power is also small, so the atomization taste of the atomizer is relatively poor. The internal space of the charging host structure is large, and the volume and capacity of the battery cells that can be accommodated are large, which has the conditions for outputting a larger power. Therefore, the charging host can directly power the atomizer in the electronic atomizer, and can achieve high-power atomization to improve the atomization taste.

[0161] Moreover, the electronic atomization device may also include any other possible devices, such as a display device, a key device, an audio output device, etc. The embodiment of the present application does not limit this.

[0162] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0163] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A power supply switching circuit for an electronic atomization device, wherein the electronic atomization device comprises a first device and a second device that are detachably connected, characterized in that: The power supply switching circuit includes: a first battery, a power switching unit, an atomization unit, a first control unit, and a second battery; the first battery, the power switching unit, the atomization unit, and the first control unit are arranged in the first device, and the second battery is arranged in the second device; The output end of the first battery is connected to the first end of the power switching unit; The second end of the power switching unit is used to connect to the input end of the atomizing unit and the output end of the second battery respectively, and the third end of the power switching unit is connected to the first control end of the first control unit; the power switching unit is used to output the electric energy input by the first battery to the atomizing unit when it is turned on; the first control unit is used to control the power switching unit to be turned off or on; the second battery is used to output electric energy to the atomizing unit when the first device is connected to the second device; The atomization unit is used to be powered on and operated under the action of the electric energy output by the first battery or the electric energy output by the second battery.

2. The power supply switching circuit according to claim 1, characterized in that: The first control unit is specifically configured to control the power switching unit to be turned on when the first device is disconnected from the second device, and to control the power switching unit to be turned off when the first device is connected to the second device.

3. The power supply switching circuit according to claim 1, characterized in that: The power switching unit at least includes: a first switch tube, a second switch tube, and a third switch tube; The first electrode of the first switch tube is connected to the output end of the first battery, the second electrode of the first switch tube is connected to the first electrode of the second switch tube, and the third electrode of the first switch tube is connected to the second electrode of the second switch tube and the first electrode of the third switch tube respectively; The third pole of the second switch tube is used to be connected to the input end of the atomization unit and the output end of the second battery respectively; The second electrode of the third switch tube is connected to the first control end of the first control unit, and the third electrode of the third switch tube is grounded; The third switch tube is used to be turned on under the control of the first control unit, so that the first switch tube and the second switch tube are turned on.

4. The power supply switching circuit according to claim 3, characterized in that: The power switching unit further includes: a first resistor; The first end of the first resistor is respectively connected to the second electrode of the first switch tube and the first electrode of the second switch tube, and the second end of the first resistor is respectively connected to the third electrode of the first switch tube, the second electrode of the second switch tube and the first electrode of the third switch tube.

5. The power supply switching circuit according to claim 1, characterized in that: The atomization unit at least includes: a fourth switch tube, a fifth switch tube and an atomization load; The first electrode of the fourth switch tube is respectively used to connect to the second end of the power switching unit, the output end of the second battery and the first electrode of the fifth switch tube, the second electrode of the fourth switch tube is connected to the first electrode of the fifth switch tube, and the third electrode of the fourth switch tube is connected to the input end of the atomization load; The second electrode of the fifth switch tube is connected to the second control end of the first control unit, and the third electrode of the fifth switch tube is grounded; The fifth switch tube is used to be turned on under the control of the first control unit so as to turn on the fourth switch tube.

6. The power supply switching circuit according to claim 5, characterized in that: The atomization unit further includes: a second resistor; The first end of the second resistor is connected to the first electrode of the fourth switch tube, and the second end of the second resistor is respectively connected to the second electrode of the fourth switch tube and the first electrode of the fifth switch tube.

7. The power supply switching circuit according to claim 1, characterized in that: The power supply switching circuit further includes: an output control unit, the output control unit being arranged in the second device; The first end of the output control unit is connected to the output end of the second battery, and the second end of the output control unit is used to connect to the second end of the power switching unit and the input end of the atomization unit respectively; The output control unit is configured to be turned on or off when the first device is connected to the second device, and to be turned off when the first device is not connected to the second device.

8. The power supply switching circuit according to claim 7, characterized in that: The power supply switching circuit further includes: a second control unit, the second control unit being arranged in the second device; The control end of the second control unit is connected to the third end of the output control unit; The second control unit is at least used to control the output control unit to be turned on or off.

9. An electronic atomization device, characterized in that: The electronic atomization device comprises the power supply switching circuit as described in any one of claims 1 to 8 and a first device, wherein the first device is an electronic atomizer for heating and atomizing an atomization matrix to form an aerosol.

10. An electronic atomization device, characterized in that: The electronic atomization device comprises the power supply switching circuit described in any one of claims 1 to 8, a first device and a second device, wherein the first device is an electronic atomizer for heating and atomizing an atomization matrix to form an aerosol; and the second device is a charging host for providing electrical energy to the electronic atomizer.

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