An atomizer resistance value acquisition circuit, a circuit board and a battery rod

Abstract

The utility model discloses an atomizer resistance value acquisition circuit, circuit board, battery pole, wherein atomizer resistance value acquisition circuit, include: port module, the port module is used for accessing external atomizer, control module, control module electric connection in port module is used for detecting port module access level change judgment external atomizer whether access and generates control instruction, switch module, switch module electric connection in control module, opens or closes according to control module control instruction, power module, power module electric connection in switch module, switch module opens, power module starts to supply power to outside, acquisition module, acquisition module electric connection in port module, control module, switch module respectively, acquisition module is used for obtaining to supply power voltage and limit big current, supplies control module to calculate external atomizer resistance value.

Description

Technical Field

[0001] This utility model relates to the field of atomizer circuit design technology, and in particular to an atomizer resistance acquisition circuit, circuit board, and battery rod. Background Technology

[0002] An electronic atomizer consists of an atomizing cartridge (atomizer) and a battery rod that drives the atomizing cartridge to heat up. The resistance of the atomizing cartridge is usually fixedly matched with the output power of the battery rod to maximize the effect and performance of the atomizing cartridge.

[0003] Since the e-cigarette cartridges are replaceable, users can change the cartridges they want to use based on different tastes or flavors. However, it is not always possible to find an e-cigarette cartridge with a resistance value that matches the output power of the battery.

[0004] The following situation will occur if the resistance of the atomizing cartridge and the output power of the battery are mismatched: If the output power of the battery rod is greater than the resistance of the atomizing cartridge, the atomizing cartridge will overheat and burn out, affecting safety. If the output power of the battery rod is less than the resistance of the atomizing cartridge, the atomizing cartridge will not be able to work or will frequently disconnect and produce unstable vapor during operation.

[0005] Therefore, a circuit is needed to collect and identify the resistance value of the atomizing cartridge so that the battery rod can decide to output the corresponding resistance value of the output power, so that the battery rod can match atomizing cartridges with different resistance values. Utility Model Content

[0006] The technical problem to be solved by this utility model embodiment is to provide an atomizer resistance acquisition circuit, circuit board, and battery rod, thereby solving the problem that existing battery rods cannot identify the resistance value of the atomizing cartridge to match the output power. To solve the above technical problems, the present utility model adopts the following technical solution: an atomizer resistance acquisition circuit, comprising: a port module, wherein the port module is used to connect to an external atomizer; The control module is electrically connected to the port module and is used to detect changes in the input level of the port module to determine whether an external atomizer is connected, and to generate control commands. A switch module, which is electrically connected to a control module, is used to turn the power supply circuit on or off according to the control command of the control module; A power module, which is electrically connected to a switch module, is used to supply power to an external atomizer when the switch module is turned on. The acquisition module is electrically connected to the port module, the control module, and the switch module. The acquisition module is used to obtain the power supply voltage value and limit the large current, so that the control module can calculate the resistance value of the external atomizer.

[0007] Furthermore, the acquisition module includes a sampling unit and a current limiting protection unit. The sampling unit is used to acquire the voltage difference generated when current flows through its two ends, and the current limiting protection unit is used to limit large currents so that the control module can acquire them safely.

[0008] Furthermore, the switching module includes a switching unit and a voltage regulator unit. The switching unit controls the power supply from the power module to the port module. The voltage regulator unit is used to maintain the switching unit at a high potential and turn it off. The control module outputs a low-level signal to the switching unit to turn it on.

[0009] Furthermore, the control module includes an I / O interface, a conversion unit, and a processing unit. The control module is electrically connected to each module through the I / O interface. The conversion unit acquires the voltage value across the sampling unit and converts it into a digital value. The processing unit reads the digital value and substitutes it into a formula to calculate the resistance value of the external atomizer.

[0010] Furthermore, the control module also includes an external communication unit, and the processing unit is used to transmit the calculated atomizer resistance value to an external indicator device for display.

[0011] To address the aforementioned technical problems, the present invention also employs the following technical solution: a circuit board comprising the aforementioned atomizer resistance acquisition circuit.

[0012] To address the aforementioned technical problems, the present invention also employs the following technical solution: a battery rod comprising the circuit board described above.

[0013] By adopting the above technical solution, the present invention has at least the following beneficial effects: The present invention determines the atomizer connection by detecting changes in the port level, the control module drives the switch module to turn on the power supply, the acquisition module obtains the power supply voltage value and limits the large current, and transmits the power supply voltage value to the control module, which calculates the atomizer resistance value, effectively solving the problem in the traditional solution that the battery rod cannot identify the resistance value of the atomizing cartridge to match the output power. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an optional embodiment of the present invention.

[0015] Figure 2 This is a circuit diagram of an optional embodiment of the present invention. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the following illustrative embodiments and descriptions are only used to explain the present invention and are not intended to limit the present invention. Moreover, the embodiments and features in the embodiments of the present invention can be combined with each other unless otherwise specified.

[0017] like Figures 1-2 As shown, an optional embodiment of this utility model provides an atomizer resistance acquisition circuit, comprising: Port module 2, the port module 2 being used to connect to an external atomizer 7; Control module 1, which is electrically connected to port module 2, is used to detect changes in the input level of port module 2 to determine whether external atomizer 7 is connected, and to generate control commands; Switch module 3, which is electrically connected to control module 1, is used to turn on or off the power supply circuit according to the control command of control module 1; Power module 4, which is electrically connected to switch module 3, is used to supply power to acquisition module 5 and external atomizer 7 in sequence when switch module 3 is turned on; The acquisition module 5 is electrically connected to the port module 2, the control module 1, and the switch module 3. The acquisition module 5 is used to acquire the external power supply voltage value and limit the large current, so that the control module 1 can calculate the resistance value of the external atomizer.

[0018] In this embodiment, the control module 1 pulls the port module 2 to a high level, indicating that the atomizer is not connected; when the atomizer is connected, the port module 2 is pulled low, and the control module 1 detects the low level, thereby determining that the external atomizer 7 has been connected. After the control module 1 detects that the external atomizer 7 has been connected, it inputs a low-level command to the switch module 3, so that the switch module 3 turns on to connect the power module 4 to supply power to the external atomizer 7. The power supply current passes through the acquisition module 5 and the port module 2 in sequence to supply power to the external atomizer 7. The acquisition module 5 obtains the external power supply voltage information and limits the large current. While transmitting the external power supply voltage information to the control module 1 for it to calculate the resistance value of the external atomizer 7, it limits the large current to prevent the large current from damaging the control module 1. This effectively solves the problem in the traditional solution that the battery rod cannot identify the resistance value of the atomizing cartridge to match the output power.

[0019] like Figure 2As shown, in an optional embodiment of this utility model, the acquisition module 5 includes a sampling unit 51 and a current limiting protection unit 52. The sampling unit 51 is used to acquire the voltage value generated by the current flowing through its two ends. The current limiting protection unit 52 increases the impedance to limit the current flowing to the control module 1, thereby protecting the control module 1.

[0020] In this embodiment, the sampling unit 51 is a resistor R1, and the current limiting protection unit 52 is composed of resistors R2 and R3. One end of the resistor R1 is connected to R2, and the other end is connected to the output terminal VOUT (port module 2). One end of the resistor R3 is connected to the output terminal VOUT (port module 2), and the other end is connected to the I / O interface; One end of the resistor R2 is connected to the drain terminal of the P-MOS transistor Q1, and the other end is connected to the I / O interface.

[0021] like Figure 2 As shown, in an optional embodiment of this utility model, the switch module 3 includes a switch unit 31 and a voltage regulator unit 32. The switch unit 31 controls the power supply from the power module 4 to the port module 2. The voltage regulator unit 32 is used to maintain the switch unit 31 at a high potential and turn it off. The control module 1 outputs a low-level signal to the switch unit 31 to turn it on.

[0022] In this embodiment, the switching unit 31 is a P-MOS transistor Q1, and the voltage regulation unit 32 is a resistor R4. One end of the resistor R4 is connected to the positive terminal of BAT+ (power module 4), and the other end is connected to the gate terminal of the P-MOS transistor Q1. When it is not necessary to collect the resistance value, the resistor R4 pulls the gate of the P-MOS transistor Q1 to a high potential, ensuring that the P-MOS transistor Q1 is in the off state and avoiding the mis-turn-on of Q1 due to the gate being floating.

[0023] like Figure 2 As shown, in an optional embodiment of this utility model, the control module 1 includes an I / O interface 10, a conversion unit 11, and a processing unit 12. The control module 1 is electrically connected to each module through the I / O interface. The conversion unit 11 is electrically connected to the I / O interface 10 to obtain the voltage values ​​at both ends of the sampling unit and convert them into digital values. The processing unit 12 calculates the resistance value of the external atomizer based on the digital values.

[0024] In this embodiment, the conversion unit 11 converts the voltage values ​​at both ends into digital values ​​that can be read by the processing unit 12. The processing unit 12 first calculates the current I flowing through the sampling unit: I = (V1-V) / R1; then calculates the atomizer resistance R: R = V / I, and substitutes it into the calculation formula: R = (V*R1) / (V1-V), thus obtaining the atomizer resistance R.

[0025] V is the voltage at the INT-AIN-VOUT terminal; V1 is the voltage at the INT-AIN-VOUT1 terminal; R1 is the resistance value of resistor R1; R is the resistance value connected to the atomizer; I is the current flowing through the sampling unit.

[0026] like Figure 2 As shown, in an optional embodiment of the present invention, the control module 1 further includes an external communication unit 13, and the processing unit 13 is used to transmit the calculated atomizer resistance value to an external indicator device for display.

[0027] In this embodiment, an external communication unit 13 is set inside the control module 1 to match the indicator device 6, so that the calculated resistance value of the external atomizer is transmitted through the external communication unit 13 to the external indicator device 6 electrically connected to the I / O interface 10 for display by the user. The external indicator device 6 can be an indicator light or a display.

[0028] This utility model embodiment also provides a circuit board, including the atomizer resistance acquisition circuit described above.

[0029] This utility model embodiment also provides a battery rod, including the circuit board described above.

[0030] If the functions described in the embodiments of this utility model are implemented in the form of software functional modules or units and sold or used as independent products, they can be stored in a computing device readable storage medium. Based on this understanding, the parts of this utility model that contribute to the prior art or the technical solutions can be embodied in the form of a software product. This software product is stored in a storage medium and includes several instructions to cause a computing device (which may be a personal computer, server, mobile computing device, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this utility model. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks. The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to mutually.

[0031] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the scope of protection of the present invention.

Claims

1. A circuit for acquiring the resistance value of an atomizer, characterized in that, include: Port module, the port module being used to connect to an external atomizer; The control module is electrically connected to the port module and is used to detect changes in the input level of the port module to determine whether an external atomizer is connected, and to generate control commands. A switch module, which is electrically connected to a control module, is used to turn the power supply circuit on or off according to the control command of the control module; A power module, which is electrically connected to a switch module, is used to supply power to an external atomizer when the switch module is turned on. The acquisition module is electrically connected to the port module, the control module, and the switch module. The acquisition module is used to obtain the power supply voltage value and limit the large current, so that the control module can calculate the resistance value of the external atomizer.

2. The atomizer resistance acquisition circuit as described in claim 1, characterized in that, The acquisition module includes a sampling unit and a current limiting protection unit. The sampling unit is used to acquire the voltage value generated when current flows through its two ends, and the current limiting protection unit is used to limit the large current so that the control module can acquire it safely.

3. The atomizer resistance acquisition circuit as described in claim 2, characterized in that, The switching module includes a switching unit and a voltage regulator unit. The switching unit controls the power supply from the power module to the port module. The voltage regulator unit is used to maintain the switching unit at a high potential and turn it off. The control module outputs a low-level signal to the switching unit to turn it on.

4. The atomizer resistance acquisition circuit as described in claim 3, characterized in that, The control module includes an I / O interface, a conversion unit, and a processing unit. The control module is electrically connected to each module through the I / O interface. The conversion unit acquires the voltage value across the sampling unit and converts it into a digital value. The processing unit reads the digital value and substitutes it into a formula to calculate the resistance value of the external atomizer.

5. The atomizer resistance acquisition circuit as described in claim 4, characterized in that, The control module also includes an external communication unit, and the processing unit is used to transmit the calculated atomizer resistance value to an external indicator device for display.

6. A circuit board, characterized in that, It includes the atomizer resistance acquisition circuit as described in any one of claims 1 to 5.

7. A battery pole, characterized in that, Includes the circuit board described in claim 6 above.

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