Power supply switching circuit and electronic atomization equipment

Abstract

The utility model 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] This application relates to the field of electronic technology, and more specifically, to a power supply switching circuit and an electronic atomization device. Background Technology

[0002] With the rapid development of electronic technology, all kinds of electronic products have become popular in people's work and life, such as electronic atomization devices that heat and atomize the atomizing matrix to form an aerosol.

[0003] To improve the battery life of e-cigarette devices, related technologies employ external charging modules to power them. This means that when the external charging module is combined with the e-cigarette device, it can charge the device. However, e-cigarette devices have a heat load, which is always powered by the device's built-in battery. Therefore, the voltage adjustment range across the heat load is limited, making it difficult for e-cigarette devices to offer multiple atomization modes, such as low-power, normal, and high-power modes. Utility Model Content

[0004] The purpose of this application is to provide a power supply switching circuit and an electronic atomizing device that can expand the adjustment range of the power supply voltage across the heat load to support the electronic atomizing device in providing multiple atomization modes.

[0005] The embodiments of this application are implemented as follows:

[0006] A first aspect of this application provides a power switching circuit for an electronic atomizing device. The electronic atomizing device includes a first device and a second device that are detachably connected. The power switching circuit includes a first battery, a power switching unit, an atomizing unit, a first control unit, and a second battery. The first battery, the power switching unit, the atomizing unit, and the first control unit are disposed in the first device, and the second battery is disposed in the second device.

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

[0008] The second terminal of the power switching unit is connected to the input terminal of the atomizing unit and the output terminal of the second battery, respectively; the third terminal of the power switching unit is connected to the first control terminal of the first control unit; the power switching unit is used to output the electrical energy input from 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 turn off or on; the second battery is used to output electrical energy to the atomizing unit when the first device and the second device are connected.

[0009] The atomizing unit is powered on and operates under the influence of electrical energy output from the first battery or the second battery.

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

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

[0012] The first terminal of the first switching transistor is connected to the output terminal of the first battery, the second terminal of the first switching transistor is connected to the first terminal of the second switching transistor, and the third terminal of the first switching transistor is connected to the second terminal of the second switching transistor and the first terminal of the third switching transistor, respectively.

[0013] The third terminal of the second switching transistor is used to connect to the input terminal of the atomizing unit and the output terminal of the second battery, respectively.

[0014] The second terminal of the third switch is connected to the first control terminal of the first control unit, and the third terminal of the third switch is grounded.

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

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

[0017] The first end of the first resistor is connected to the second terminal of the first switching transistor and the first terminal of the second switching transistor, respectively, and the second end of the first resistor is connected to the third terminal of the first switching transistor, the second terminal of the second switching transistor, and the first terminal of the third switching transistor, respectively.

[0018] In one embodiment of this application, the atomizing unit includes at least: a fourth switching transistor, a fifth switching transistor, and an atomizing load;

[0019] The first terminal of the fourth switching transistor is connected to the second terminal of the power switching unit, the output terminal of the second battery, and the first terminal of the fifth switching transistor, respectively. The second terminal of the fourth switching transistor is connected to the first terminal of the fifth switching transistor, and the third terminal of the fourth switching transistor is connected to the input terminal of the atomizing load.

[0020] The second terminal of the fifth switch is connected to the second control terminal of the first control unit, and the third terminal of the fifth switch is grounded.

[0021] The fifth switch is turned on under the control of the first control unit, so that the fourth switch is turned on.

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

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

[0024] In one embodiment of this application, the power supply switching circuit further includes an output control unit, which is disposed in the second device;

[0025] The first terminal of the output control unit is connected to the output terminal of the second battery, and the second terminal of the output control unit is used to connect to the second terminal of the power switching unit and the input terminal of the atomizing unit, respectively.

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

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

[0028] The control terminal of the second control unit is connected to the third terminal 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 this application provides an electronic atomization device, which includes any of the power supply switching circuits and a first device provided in the first aspect above. The first device is an electronic atomizer used to heat and atomize an atomization matrix to form an aerosol.

[0031] A third aspect of this application provides an electronic atomization device, which includes any of the power supply switching circuits, a first device, and a second device provided in the first aspect above. The first device is an electronic atomizer used to heat and atomize an atomization matrix to form an aerosol; the second device is a charging host used to provide electrical energy to the electronic atomizer.

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

[0033] This application provides a power supply switching circuit, which includes a first battery, a power switching unit, an atomizing unit, a first control unit, and a second battery. Specifically, the first battery, the power switching unit, the atomizing unit, and the first control unit are disposed in a first device, and the second battery is disposed in a second device.

[0034] Specifically, by controlling the power switching unit to turn on or off via the first control unit, the first battery can supply power to the atomizing unit when the first device is not connected to the second device, and conversely, when the first device is connected to the second device and the second battery can supply power to the atomizing unit, the power switching unit can be turned off to prevent the first battery from supplying power to the atomizing unit. This allows the second battery in the second device to supply power to the atomizing unit in the first device, thereby expanding the adjustment range of the supply voltage across the atomizing unit (i.e., the heating load) and supporting multiple atomization modes in the electronic atomizing device.

[0035] In this way, the adjustment range of the power supply voltage at both ends of the heat load can be expanded to support the electronic atomization device in providing multiple atomization modes. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the structure of the first power supply switching circuit provided in the embodiments of this application;

[0038] Figure 2 This is a schematic diagram of the structure of the second power supply switching circuit provided in the embodiments of this application;

[0039] Figure 3 This is a schematic diagram of the third power supply switching circuit provided in the embodiments of this application;

[0040] Figure 4 This is a schematic diagram of the structure of the fourth power supply switching circuit provided in the embodiments of this application;

[0041] Figure 5 This is a schematic diagram of the structure of the fifth power supply switching circuit provided in the embodiments of this application;

[0042] Figure 6 This is a schematic diagram of the sixth power supply switching circuit provided in the embodiments of this application. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of 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. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0045] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

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

[0047] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] In related technologies, electronic atomization devices with external power banks are becoming increasingly common. These devices include atomizing cartridges for heating and atomizing the atomizing substrate and a charging unit for charging the atomizing cartridge. The atomizing cartridge and the charging unit are detachably connected and each has a battery that provides power. The atomizing cartridge also includes an atomizing device for heating and atomizing the atomizing substrate. Specifically, when the atomizing cartridge and the charging unit are separated, the battery inside the atomizing cartridge powers the atomizing device within the cartridge; when the atomizing cartridge and the charging unit are connected, the charging unit charges the battery inside the atomizing cartridge.

[0049] However, in this design, the battery cells within the charging unit can only charge the battery in the atomizing cartridge, and cannot directly power the atomizing device within the cartridge. Because the space available for the battery in the atomizing cartridge is limited, the battery size and capacity are also small, resulting in lower output power and a relatively poor atomization flavor. In contrast, the charging unit has a larger internal space, allowing for larger battery cells with greater capacity, and thus the capability to output higher power. Therefore, there is an urgent need to provide a suitable power switching circuit that enables the charging unit to directly power the atomizing device in the atomizing cartridge, thereby achieving high-power atomization.

[0050] To address this, this application provides a power supply switching circuit. This circuit comprises a first battery, a power switching unit, an atomizing unit, a first control unit, and a second battery. The first battery, power switching unit, atomizing unit, and first control unit are housed in a first device, while the second battery is housed in a second device. Specifically, the output terminal of the first battery is connected to the first terminal of the power switching unit; the second terminal of the power switching unit is connected to both the input terminal of the atomizing unit and the output terminal of the second battery; and the third terminal of the power switching unit is connected to the first control terminal of the first control unit. This allows the first battery in the first device to power the atomizing unit when the first and second devices are separated, and the second battery in the second device to power the atomizing unit when the first and second devices are combined.

[0051] This application uses a power switching circuit applied in an electronic atomization device as an example for illustration. However, it does not imply that this application's embodiments can only be applied to power switching in electronic atomization devices.

[0052] The power supply switching circuit provided in the embodiments of this application will be explained in detail below.

[0053] Figure 1 A schematic diagram of a power supply switching circuit provided in this application. See also... Figure 1 This application provides a power supply switching circuit that can be applied to an electronic atomizing device. The electronic atomizing device may include a detachably connected first device and a second device. Specifically, the first device may be an electronic atomizer for heating and atomizing an atomizing 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 switching unit 102, an atomizing unit 103, a first control unit 104, and a second battery 201.

[0055] The first battery 101, power switching unit 102, atomizing unit 103 and 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 terminal of the first battery 101 is connected to the first terminal 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 atomizing unit 103 and the output end of the second battery 201, respectively, and 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 electrical energy input from the first battery 101 to the atomizing 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 electrical energy to the atomizing unit 103 when the first device D is connected to the second device Z.

[0061] The atomizing unit 103 is powered on and operates under the influence of electrical energy output from the first battery 101 or the second battery 201.

[0062] In this embodiment, the first device D and the second device Z can be different components applied in the same electronic device. For example, if the power supply switching circuit is applied in an electronic atomizing device, then the first device D can be an atomizing cartridge used to perform functions such as storing atomizing liquid, detecting whether atomization is being performed, atomizing the atomizing liquid, and controlling the atomization rate, and the second device Z can be the atomizer body used to perform functions such as power supply, data storage, and display. This application embodiment does not limit this.

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

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

[0065] The first control unit 104 can accurately control the power switching unit 102 to turn off or on based on the connection status of the first device D and the second device Z, as well as the specific operating 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 terminal of the atomizing unit 103 and the second terminal of the power switching unit 102. At this time, the atomizing 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 terminal of the atomizing unit 103 and the second terminal of the power switching unit 102. At this time, the atomizing unit 103 can be powered by the second battery 201, and the power switching unit 102 can be turned off by the first control unit 104. In this way, the electrical energy output by the second battery 201 can be prevented from flowing back to the first battery 101.

[0068] Specifically, the first battery 101 can be used to output electrical energy to the atomizing unit 103 through the power switching unit 102. Specifically, it can output electrical energy to the atomizing 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 terminal of the atomizing unit 103. At this time, the second battery 201 can output electrical energy to the atomizing unit 103.

[0070] Since the first device D includes both an atomizing unit 103 and a first battery 101, the space available to accommodate the first battery 101 is relatively small. Consequently, the first battery 101 has a small volume and capacity, resulting in a lower output power and a relatively poor atomized flavor. In contrast, the second device Z has a larger internal space, allowing for a larger volume and capacity to accommodate the second battery 201, thus enabling it to output higher power. Therefore, the second device Z can directly power the atomizing unit 103 in the first device D, achieving high-power atomization and improving the atomized flavor.

[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 atomizing unit 103. For example, the power switching unit 102 may include any possible controllable switch.

[0072] In this embodiment, the first control unit 104 can be any component with functions such as detection, identification, processing, and control, such as a microcontroller unit (MCU) or a digital control chip (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, it can be determined whether the first device D is connected to the second device Z by detecting the voltage of some pins in the first device D. This embodiment of the application does not limit this approach.

[0075] In addition, the first control unit 104 can also be used to determine whether atomization is required by detecting the airflow speed inside the first device D, or can determine whether atomization is required by any other possible means. This application embodiment does not limit this.

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

[0077] Additionally, the first control unit 104 can control the power switching unit 102 to shut down when the first device D is connected to the second device Z and the second battery 201 can provide power. It can also control the power switching unit 102 to shut down when the first device D and the second device Z are not connected, but the atomizing unit 103 does not currently need to perform atomization. Furthermore, it can control the power switching unit 102 to shut down when the first device D and the second device Z are not connected, but the first battery 101 cannot provide power.

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

[0079] In this embodiment, the atomizing unit 103 can be a device for atomizing the atomizing liquid. Specifically, the atomizing unit 103 can achieve the atomization function by heating, pressurizing, ultrasonic waves, etc. This application embodiment does not limit this.

[0080] It is worth noting that, in order to better illustrate the power supply switching circuit provided in the embodiments of this application, the working principle of the circuit is described below:

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

[0082] Furthermore, if atomization is required, the first control unit 104 can output a corresponding turn-on signal to the power switching unit 102 to control the power switching unit 102 to turn on, thereby enabling the first battery 101 to supply power to the atomization unit 103 through the power switching unit 102 and realize the atomization function.

[0083] If atomization is not required at present, the first control unit 104 can either not output a conduction signal to the power switching unit 102 or output a control signal to control the power switching unit 102 to turn off, thereby causing the first battery 101 to stop supplying power to the atomization unit 103, and the atomization unit 103 to enter a power-off 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 terminal of the atomizing unit 103. At this time, the atomizing 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 situation, the first control unit 104 can continuously output control signals to the power switching unit 102 to control the power switching unit 102 to turn off, so that the power switching unit 102 remains off. In this way, the problems of the first battery 101 supplying power to the atomizing unit 103 while the second battery 201 supplies power to the atomizing unit 103, or the electrical energy output by the second battery 201 flowing back to the first battery 101, can be avoided.

[0086] In another possible approach, the first control unit 104 can also detect the operating 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 that the second battery 201 cannot supply power to the atomizing unit 103, the first control unit 104 can control the power switching unit 102 to be turned on even if the first device D and the second device Z are connected. This application embodiment does not limit this aspect.

[0087] It is worth noting that in this embodiment, by controlling the power switching unit 102 to be turned on or off by the first control unit 104, 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. Conversely, 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, the first battery 101 can be prevented from supplying power to the atomizing unit 103. In this way, the purpose of enabling the second battery 201 in the second device Z to supply power to the atomizing unit 103 in the first device D can be achieved.

[0088] In this embodiment, a first battery 101, a power switching unit 102, an atomizing unit 103, a first control unit 104, and a second battery 201 are configured in the power supply switching circuit. Specifically, the first battery 101, the power switching unit 102, the atomizing unit 103, and the first control unit 104 are configured in the first device D, and the second battery 201 is configured in the second device Z.

[0089] Specifically, by controlling the power switching unit 102 to turn on or off via the first control unit 104, the first battery 101 can supply power to the atomizing unit 103 when the first device D is not connected to the second device Z, through the control of the first control unit 104 controlling the power switching unit 102 to turn on. Conversely, 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, the first battery 101 can be prevented from supplying power to the atomizing unit 103 by controlling the power switching unit 102 to turn off. In this way, the purpose of enabling the second battery 201 in the second device Z to 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 atomizing 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 atomizing unit 103.

[0091] Furthermore, when the first device D is connected to the second device Z, the power switching unit 102 can be turned off to prevent the electrical energy output from the second battery 201 from flowing back into the first battery 101 and causing damage to the first battery 101. This also improves the safety of the power switching circuit.

[0092] Furthermore, since the first control unit 104 can control the power switching unit 102 to turn on even if the first device D is connected to the second device Z when the second battery 201 is detected as unable to supply power to the atomizing unit 103, the reliability of the power switching circuit can be improved.

[0093] In one possible implementation, see [link to relevant documentation]. Figure 2 The power switching unit 102 includes at least: a first switching transistor Q1, a second switching transistor Q2, and a third switching transistor Q3.

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

[0095] The third terminal of the second switching transistor Q2 is used to connect to the input terminal of the atomizing unit 103 and the output terminal of the second battery 201.

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

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

[0098] In this embodiment, the first switch Q1 and the second switch Q2 can be P-channel type switches, such as PMOS transistors.

[0099] In this embodiment, the third switch Q3 can be an NPN transistor. This application does not limit this embodiment.

[0100] For example, if the first switch Q1 and the second switch Q2 are PMOS transistors, continue to see Figure 2 The first, second, and third terminals of the first switching transistor Q1 can be its drain, source, and gate, respectively. Similarly, the first, second, and third terminals of the second switching transistor Q2 can be its source, gate, and drain, respectively. If the third switching transistor Q3 is an NPN transistor, then its first, second, and third terminals can be its collector, base, and emitter, respectively.

[0101] It is understandable that the third switch Q3 can be used to control the third switch Q3 to turn on when the first control unit 104 determines that the first battery 101 needs to supply power to the atomizing unit 103.

[0102] Furthermore, after the third switch Q3 is turned on, the third terminal (gate) of the first switch Q1 and the second terminal (gate) of the second switch Q2 can be grounded through the third switch Q3, thereby reducing the voltage across the third terminal of the first switch Q1 and the second terminal of the second switch Q2, and thus turning on the first switch Q1 and the second switch Q2. In this way, the first battery 101 can supply power to the atomizing unit 103 through the first switch Q1 and the second switch Q2.

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

[0104] In one possible implementation, see [link to previous section] Figure 2 The power switching unit 102 also includes a first resistor R1.

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

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

[0107] This improves the reliability and safety of the power switching unit 102 and the power switching circuit.

[0108] In one possible implementation, see [link to relevant documentation]. Figure 3 The atomizing unit 103 includes at least: a fourth switching tube Q4, a fifth switching tube Q5, and an atomizing load 1031.

[0109] The first terminal of the fourth switch Q4 is connected to the second terminal of the power switching unit 102, the output terminal of the second battery 201, and the first terminal of the fifth switch Q5. The second terminal of the fourth switch Q4 is connected to the first terminal of the fifth switch Q5, and the third terminal of the fourth switch Q4 is connected to the input terminal of the atomizing load 1031.

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

[0111] The fifth switch Q5 is turned on under the control of the first control unit 104 so that the fourth switch Q4 is turned on.

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

[0113] In this embodiment, the fourth switch Q4 can be a P-channel switch, such as a PMOS transistor. The fifth switch Q5 can be an NPN transistor. This application does not limit this embodiment.

[0114] For example, if the fourth switch Q4 is a PMOS transistor, see [the following text is incomplete and requires further context]. Figure 3 The first, second, and third terminals of the fourth switch Q4 can be the source, gate, and drain of the fourth switch Q4, respectively. If the fifth switch Q5 is an NPN transistor, then the first, second, and third terminals of the fifth switch Q5 can be the collector, base, and emitter of the fifth switch Q5, respectively.

[0115] It is understandable that the fifth switch Q5 can be used to control the fifth switch Q5 to turn on when the first control unit 104 determines that the current atomizing unit 103 needs to be powered on and to perform atomization operation on the atomizing liquid.

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

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

[0118] In one possible implementation, see [link to previous section] Figure 3The atomizing unit 103 also includes a second resistor R2.

[0119] The first end of the second resistor R2 is connected to the first terminal of the fourth switch Q4, and the second end of the second resistor R2 is connected to the second terminal of the fourth switch Q4 and the first terminal of the fifth switch Q5.

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

[0121] In one possible implementation, see [link to relevant documentation]. Figure 4 The power supply switching circuit also includes an output control unit 202, which is disposed 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 atomizing unit 103, respectively.

[0123] The output control unit 202 is used to turn on or off when the first device D is connected to the second device Z, and to turn 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 atomizing 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 atomizing unit 103 needs to be powered on to operate and perform atomization operation on the atomizing liquid, the output control unit 202 can switch to the on state; if the current atomizing unit 103 does not need to be powered on, the output control unit 202 can remain in the off state.

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

[0127] In one possible implementation, see [link to relevant documentation]. Figure 5The power supply switching circuit also includes a second control unit 203, which is disposed in the second device Z.

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

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

[0130] In this embodiment, the second control unit 203 can be any processing element with functions such as detection, identification, processing, and control, such as an MCU or a DSP. This application embodiment does not limit this.

[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 power, and to control the output control unit 202 to turn off when the first device D is separated from the second device Z, or when the atomizing unit 103 does not need to be powered on.

[0132] In addition, the second control unit 203 can also be used to detect the operating parameters of the second battery 201, such as the charge level and output voltage of the second battery 201. Furthermore, when the charge level of the second battery 201 is low (or when it is determined that the second battery 201 has triggered over-discharge protection), it controls the output control unit 202 to shut down. Moreover, the second control unit 203 can also send the operating 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 turn on, allowing the first battery 201 to power the atomizing unit 103, when the charge level of the second battery 201 is low or the second battery 201 cannot supply power to the atomizing unit 103.

[0133] This improves the practicality and flexibility of the power supply switching circuit.

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

[0135] The first terminal of the sixth switch is connected to the output terminal of the second battery 201 and the first terminal of the seventh switch, the second terminal of the sixth switch is connected to the input terminal of the atomizing unit 103, and the third terminal of the sixth switch is connected to the first terminal of the seventh switch.

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

[0137] The seventh switch is used 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 is turned on.

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

[0139] In this embodiment, the seventh switch can be an NPN transistor or an N-channel switch. This application does not limit this specific type of switch.

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

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

[0142] It is understood that the seventh switch can be used to control the seventh switch to turn on when the second control unit 203 determines that the first device D and the second device Z are connected and the current atomizing unit 103 needs to be powered on.

[0143] Furthermore, after the seventh switch is turned on, the third terminal (gate) of the sixth switch can be grounded through the seventh switch, thereby lowering the voltage on the third terminal of the sixth switch and turning it on. In this way, the second battery 201 can supply power to the atomizing unit 103 through the sixth switch.

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

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

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

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

[0148] This improves the safety of the output control unit 202 and the second device Z.

[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 of the first battery 101, the connection status of the first device D and the second device Z (including the first device D and the second device Z being connected, and the first device D and the second device Z being disconnected), and the usage information of the electronic atomizing device (such as the amount of atomizing matrix used).

[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 whether the first device D and the second device Z are connected or disconnected), and the usage information of the electronic atomizing device (such as the amount of atomizing matrix used).

[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 atomizing load 1031 based on the 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 for the second battery 201 to supply power to the first battery 101), the second control unit 203 controls the first control unit 104 to turn off the fourth switch Q4 and the fifth switch Q5, and turn on the charging circuit (not shown in the figure) to supply power to the first battery 101 through the charging circuit.

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

[0155] The following describes an electronic atomizing device including the power supply switching circuit provided in this application. This electronic atomizing device and any of the power supply switching circuits mentioned above belong to the same design concept. The specific implementation process and technical effects are described above and will not be repeated below.

[0156] This application provides an electronic atomizing device, which includes the power switching circuit and the first device D provided in any of the above embodiments.

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

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

[0159] The second device Z can be a charging host to provide power to the electronic atomizer.

[0160] Because e-cigarettes contain both the atomizing element and the battery, the space available for the battery is limited, resulting in a smaller battery size and capacity, lower output power, and a relatively poor flavor profile. In contrast, charging mods have a larger internal structure, accommodating larger and higher-capacity batteries, and are capable of outputting higher power. Therefore, charging mods can directly power the atomizing element in e-cigarettes, enabling high-power atomization and improving the flavor profile.

[0161] Furthermore, the electronic atomizing device may also include any other possible components, such as a display device, a button device, an audio output device, etc. This application does not limit this aspect.

[0162] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0163] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A power supply switching circuit for an electronic atomizing device, the electronic atomizing device comprising a detachably connected first device and a second device, characterized in that, The power supply switching circuit includes: a first battery, a power switching unit, an atomizing unit, a first control unit, and a second battery; the first battery, the power switching unit, the atomizing unit, and the first control unit are disposed in the first device, and the second battery is disposed in the second device; The output terminal of the first battery is connected to the first terminal of the power switching unit; The second terminal of the power switching unit is connected to the input terminal of the atomizing unit and the output terminal of the second battery, respectively; the third terminal of the power switching unit is connected to the first control terminal of the first control unit; the power switching unit is used to output the electrical energy input from 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 turn off or on; the second battery is used to output electrical energy to the atomizing unit when the first device and the second device are connected. The atomizing unit is powered on and operates under the influence of electrical energy output from the first battery or the second battery.

2. The power supply switching circuit as described in claim 1, characterized in that, The first control unit is specifically used to control the power switching unit to turn on when the first device and the second device are disconnected, and to control the power switching unit to turn off when the first device and the second device are connected.

3. The power supply switching circuit as described in claim 1, characterized in that, The power switching unit includes at least: a first switching transistor, a second switching transistor, and a third switching transistor; The first terminal of the first switching transistor is connected to the output terminal of the first battery, the second terminal of the first switching transistor is connected to the first terminal of the second switching transistor, and the third terminal of the first switching transistor is connected to the second terminal of the second switching transistor and the first terminal of the third switching transistor, respectively. The third terminal of the second switching transistor is used to connect to the input terminal of the atomizing unit and the output terminal of the second battery, respectively. The second terminal of the third switch is connected to the first control terminal of the first control unit, and the third terminal of the third switch is grounded. The third switch is turned on under the control of the first control unit, so that the first switch and the second switch are turned on.

4. The power supply switching circuit as described in claim 3, characterized in that, The power switching unit further includes: a first resistor; The first end of the first resistor is connected to the second terminal of the first switching transistor and the first terminal of the second switching transistor, respectively, and the second end of the first resistor is connected to the third terminal of the first switching transistor, the second terminal of the second switching transistor, and the first terminal of the third switching transistor, respectively.

5. The power supply switching circuit as described in claim 1, characterized in that, The atomizing unit includes at least: a fourth switching tube, a fifth switching tube, and an atomizing load; The first terminal of the fourth switching transistor is connected to the second terminal of the power switching unit, the output terminal of the second battery, and the first terminal of the fifth switching transistor, respectively. The second terminal of the fourth switching transistor is connected to the first terminal of the fifth switching transistor, and the third terminal of the fourth switching transistor is connected to the input terminal of the atomizing load. The second terminal of the fifth switch is connected to the second control terminal of the first control unit, and the third terminal of the fifth switch is grounded. The fifth switch is turned on under the control of the first control unit, so that the fourth switch is turned on.

6. The power supply switching circuit as described in claim 5, characterized in that, The atomizing unit further includes: a second resistor; The first end of the second resistor is connected to the first terminal of the fourth switch, and the second end of the second resistor is connected to the second terminal of the fourth switch and the first terminal of the fifth switch.

7. The power supply switching circuit as described in claim 1, characterized in that, The power supply switching circuit further includes an output control unit, which is disposed in the second device; The first terminal of the output control unit is connected to the output terminal of the second battery, and the second terminal of the output control unit is used to connect to the second terminal of the power switching unit and the input terminal of the atomizing unit, respectively. The output control unit is used to turn on or off when the first device is connected to the second device, and to turn off when the first device is not connected to the second device.

8. The power supply switching circuit as described in claim 7, characterized in that, The power supply switching circuit further includes: a second control unit, which is disposed in the second device; The control terminal of the second control unit is connected to the third terminal 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 atomizing device, characterized in that, The electronic atomization device includes a 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 used to heat and atomize the atomization matrix to form an aerosol.

10. An electronic atomizing device, characterized in that, The electronic atomization device includes the power supply switching circuit, the first device, and the second device as described in any one of claims 1 to 8. The first device is an electronic atomizer used to heat and atomize the atomization matrix to form an aerosol. The second device is a charging host used to provide power to the electronic atomizer.

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