WO2021092891A1

WO2021092891A1 - Power supply system, power receiving system, main body of electronic cigarette, and cigarette cartridge

Info

Publication number: WO2021092891A1
Application number: PCT/CN2019/118768
Authority: WO
Inventors: 叶祥祥; 阮金; 沈海兵; 罗建杰
Original assignee: 深圳市汇顶科技股份有限公司
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2021-05-20
Also published as: CN113226087B; CN113226087A

Abstract

A power supply system, a power receiving system, a main body of an electronic cigarette, and a cigarette cartridge. In the power supply system, a voltage output end of a power supply module (101) and a signal transceiving end of a communication module (102) are respectively connected to a conductive member (103); when the conductive member (103) contacts a conductive member (203) of the power receiving system, the communication module (102) acquires, by means of the conductive member (103) and the conductive member (203) of the power receiving system, a signal characterizing identity information of the power receiving system; in the communication module (102), a coupling capacitor has a first end connected to a reader (104), and a second end serving as the signal transceiving end; the reader (104) receives and transmits a signal by means of the coupling capacitor; a control unit (105) is connected to the reader (104), and is used for authenticating the power receiving system according to the identity information of the power receiving system, and controlling, after the authentication is passed, the power supply module (101) to supply power to the power receiving system by means of the conductive member (103) and the conductive member (203) of the power receiving system. The present technical solution can be used to improve the quality of communication signals while reducing the cost and size of a product.

Description

Power supply system, power receiving system, electronic cigarette host and smoke bomb

Technical field

This application relates to the field of circuit technology, in particular to a power supply system, a power receiving system, a host of an electronic cigarette, and a cartridge.

Background technique

At present, separate electronic cigarettes mainly include a host and a cartridge. The host contains a controller, battery, sensor, button, LED indicator, etc., and the cartridge contains heating wires and e-liquid. Cigarette cartridges are consumables and can be replaced. After the cartridge is inserted into the host, the cartridge and the host are contacted and connected through the connector (POGO PI N and metal sheet), thereby heating the heating wire in the cartridge, so that the e-liquid produces smoke.

Generally, the host will perform anti-counterfeiting authentication on the inserted cartridge to ensure whether the host and the cartridge are of the same brand. One way to perform anti-counterfeiting authentication is to perform authentication through data interaction between the host and the cartridge. In related technologies, there are two communication methods between the host and the cartridge. One is: using such as Inter-Integrated Circuit (I2C), Serial Peripheral Interface (SPI), and Universal Asynchronous Transmitting. The Universal Asynchronous Receiver/Transmitter (UART for short) realizes the communication between the cartridge and the host; the other is: the communication between the cartridge and the host is realized by means of non-contact coupling of the radio frequency antenna.

Summary of the invention

The purpose of some embodiments of this application is to provide a power supply system, a power receiving system, an electronic cigarette host and a cartridge, which can reduce the cost and size of the product while improving the quality of the communication signal.

An embodiment of the application provides a power supply system, including: a power supply module, a communication module, and a conductive element; the voltage output end of the power supply module and the signal transceiver end of the communication module are respectively connected to the conductive element of the power supply system; After the conductive member of the power supply system contacts the conductive member of the power receiving system, the communication module obtains the signal that characterizes the identity information of the power receiving system through the conductive member of the power supply system and the conductive member of the power receiving system; The communication module includes a coupling capacitor for signal coupling, a reader, and a control unit; the first end of the coupling capacitor of the communication module is connected to the reader, and the second end of the coupling capacitor of the communication module serves as The signal transceiving end of the communication module; the reader performs signal transceiving through the coupling capacitor of the communication module; the control unit is connected to the reader, and is used to communicate with each other according to the identity information of the power receiving system The power receiving system is authenticated, and after the authentication is passed, the power supply module is controlled to supply power to the power receiving system through the conductive member of the power supply system and the conductive member of the power receiving system.

The embodiment of the present application also provides a host of an electronic cigarette, and the above-mentioned power supply system is installed in the host.

The embodiment of the present application also provides a power receiving system, which is used in conjunction with the above-mentioned power supply system, and includes: a power receiving module, a response module, and a conductive element; the voltage input terminal of the power receiving module, and the signal receiving and sending of the response module The terminals are respectively connected to the conductive parts of the power receiving system; when the conductive parts of the power receiving system are in contact with the conductive parts in the power supply system, the response module communicates with the conductive parts of the power receiving system. The conductive element of the power supply system receives a signal that characterizes the authentication of the power receiving system, and sends a signal characterizing the identity information of the power receiving system; the power receiving system is powered after being authenticated by the power supply system; the response module It includes a coupling capacitor for signal coupling and an electronic tag; the first end of the coupling capacitor of the response module is connected to the electronic tag, and the second end of the coupling capacitor of the response module serves as the signal transceiver of the response module Terminal; wherein, the electronic tag transmits and receives signals through the coupling capacitor of the response module, and uses the energy of the received signal to be powered on.

The embodiment of the present application also provides an electronic cigarette cartridge, wherein the above-mentioned power receiving system is arranged in the cartridge, and the power receiving module is a heating wire.

The inventor found that the related technology has at least the following problems: using I2C, SPI, UART, etc. to realize the communication between the cartridge and the host, the problem is that additional shrapnel is required, that is, in addition to the shrapnel required for power supply, it also needs to be used for Communication shrapnel, which will increase product cost and size. Moreover, I2C, SPI, UART and other communication methods are all DC signals, and the line sequence is incorrect when the cartridge is inserted after being changed 180 degrees, and there is a problem of directional insertion and removal. However, the problem of using the radio frequency antenna to communicate with the host by non-contact coupling is that the reader in the host and the radio frequency tag in the cartridge need to be equipped with antennas. The cost of the antenna is high and it takes up space. Larger, will increase the product cost and size, and the signal quality of the non-contact method is poor.

Compared with the prior art, the power supply system of the embodiment of the present application includes: the voltage output terminal of the power supply module and the signal transceiver terminal of the communication module are respectively connected to the conductive parts of the power supply system; when the conductive parts of the power supply system and the power receiving system After contacting the conductive parts in the power supply system, the communication module obtains signals that characterize the identity information of the power receiving system through the conductive parts of the power supply system and the conductive parts of the power receiving system; the communication module includes a coupling capacitor, a reader, and a control unit; the first end of the coupling capacitor Connected to the reader, and the second end is used as the signal receiving and sending end of the communication module; the reader performs signal receiving and sending through the coupling capacitor; the control unit is connected to the reader, and is used to authenticate the power receiving system according to the identity information of the power receiving system. After the certification is passed, the control power supply module supplies power to the power receiving system through the conductive parts of the power supply system and the conductive parts of the power receiving system. In the embodiment of the application, the method of transmitting and receiving signals by using the card reader and the antenna provided on the tag in the related technology is improved to using the capacitive coupling method for transmitting and receiving signals. The antenna is not required to reduce the space, and the cost of the capacitor is relatively low. Saved costs. Moreover, the communication module and the power supply module can share conductive parts to realize power supply and communication, and no additional conductive parts are required, thereby further reducing the cost. In addition, the signals sent and received by capacitive coupling are AC signals, so the power supply system and the power receiving system can contact in any direction without affecting the communication between the two parties. At the same time, since the capacitor can block direct current, the power supply circuit for power supply and the communication circuit for communication are isolated and do not interfere with each other.

For example, the coupling capacitor of the communication module includes: a first capacitor and a second capacitor symmetrical to the first capacitor; the first end of the first capacitor and the first end of the second capacitor are respectively connected to all Both ends of the reader, and the second end of the first capacitor and the second end of the second capacitor are both used as the signal receiving and sending ends of the communication module. The second capacitor and the first capacitor form a symmetrical capacitor, so that the signal sent by the reader through the symmetrical capacitor is a differential signal, which is beneficial to improve the anti-interference ability.

For example, the communication module further includes: a capacitor for impedance matching; the first end of the capacitor for impedance matching is connected to the second end of the coupling capacitor of the communication module, and the second end is connected. Setting a capacitor for impedance matching helps ensure the signal strength of the transmitted signal and obtain the maximum output power.

For example, the communication module includes: a third capacitor and a fourth capacitor for impedance matching; a first terminal of the third capacitor is connected to a second terminal of the first capacitor; a first terminal of the fourth capacitor The terminal is connected to the second terminal of the second capacitor; the second terminal of the third capacitor and the second terminal of the fourth capacitor are both connected to the reference ground. The third capacitor and the fourth capacitor are symmetrical capacitors, and the third capacitor and the fourth capacitor are used for impedance matching, which is beneficial to improve the anti-interference ability of the signal while obtaining the maximum output power.

For example, the power supply system further includes an inductor; the voltage output end of the power supply module is connected to the conductive element of the power supply system through the inductor; the signal transceiver end of the communication module is directly connected to the conductive element of the power supply system. The communication signal between the power supply system and the power receiving system is an AC signal. Setting the inductance helps prevent the communication signal from passing to other places and attenuating, ensuring that the communication signal is transmitted to the power receiving system as much as possible. The inductor can also filter other interference signals.

For example, the communication module further includes: a power amplifier; the power amplifier of the communication module is connected in series between the reader and the coupling capacitor of the communication module. It is helpful to improve the signal strength of the signal sent and received by the reader.

Description of the drawings

One or more embodiments are exemplified by the pictures in the corresponding drawings. These exemplified descriptions do not constitute a limitation on the embodiments. The elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the attached drawings do not constitute a scale limitation.

Fig. 1 is a schematic diagram of a power supply system according to a first embodiment of the present application;

Fig. 2 is a schematic diagram of a power receiving system according to the first embodiment of the present application;

Fig. 3 is a schematic diagram of a power supply system according to a second embodiment of the present application;

Fig. 4 is a schematic diagram of a power receiving system according to a second embodiment of the present application;

Fig. 5 is a schematic diagram of a power supply system according to a third embodiment of the present application;

Fig. 6 is a schematic diagram of another power supply system according to the third embodiment of the present application;

Fig. 7 is a schematic diagram of a power receiving system according to a third embodiment of the present application;

Fig. 8 is a schematic diagram of a power supply system according to a fourth embodiment of the present application;

Fig. 9 is a schematic diagram of a power receiving system according to a fourth embodiment of the present application.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the present application clearer, some embodiments of the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the application, and not used to limit the application. The following divisions of the various embodiments are for convenience of description, and should not constitute any limitation on the specific implementation of the present application, and the various embodiments may be combined with each other without contradiction.

The first embodiment of the present application relates to a power supply system. After the power supply system is in contact with a power receiving system, it can perform identity authentication on the power receiving system, and if the authentication is passed, it can supply power to the power receiving system. The power supply system and the power receiving system can be installed on products that require anti-counterfeiting certification. In an example, the power supply system may be set in the main body of the separated electronic cigarette, and the corresponding power receiving system may be set in the cartridge of the electronic cigarette. In another example, the power supply system may be installed in the printer, and the corresponding power receiving system may be installed in the ink cartridge. However, the specific implementation is not limited to this.

For convenience of description, in this embodiment and the following embodiments, the power supply system is set in the host of the electronic cigarette as an example, and the power receiving system is set in the cartridge of the electronic cigarette as an example. The power supply system in the main unit mainly authenticates the identity of the cartridge after detecting that the cartridge is inserted into the main unit. After confirming that the cartridge is of the same brand as the main unit, it can supply power to the heating wire in the cartridge to make the heating wire heat up. The implementation details of this embodiment will be described in detail below. The following content is only provided for ease of understanding and is not necessary for the implementation of this solution.

The schematic diagram of the power supply system in this embodiment may be as shown in FIG. 1, and includes: a power supply module 101, a communication module 102, and a conductive member 103.

In an example, the power supply module 101 may include a power supply and a power supply switch K1, and the power supply may be a rechargeable lithium battery. The voltage output terminal of the power supply module 101 may be the output terminal after the positive pole of the power supply passes through the power supply switch K1 as shown in FIG. 1. If K1 is closed, the power supply module 101 can output voltage, and the output voltage can be transmitted to the conductive member 103. The conductive member 103 may include POGO PIN1 and POGO PIN2, the positive pole of the power supply can be connected to the POGO PIN1 through K1, and the negative pole of the power supply can be connected to the POGO PIN2 through the ground wire in FIG. 1.

After the cartridge is inserted into the host, the conductive member 103 of the power supply system will be in contact with the conductive member 203 in the power receiving system as shown in FIG. 2. The conductive member 203 may include a metal sheet 1 and a metal sheet 2. That is, after the host and the cartridge are in contact, the POGO PIN1 and the metal sheet 1 are in contact and connection, and the POGO PIN2 and the metal sheet 2 are in contact and connection. In FIG. 2, the two ends of the heating wire 201 are connected to the metal sheet 1 and the metal sheet 2 respectively. 1 and 2, the power supply circuit of the heating wire 201 includes a power supply positive pole, a power supply switch K1, a POGO PIN1, a metal sheet 1, a heating wire 201, a metal sheet 2, a POGO PIN2, and a power supply negative pole connected in sequence. When the switch K1 is closed, the power supply loop of the heating wire 201 is turned on, and the power supply module 101 can supply power to the heating wire 201 of the cartridge. Among them, the heating wire generally has 1.5 ohms, 2.1 ohms, etc., which can heat the e-liquid in the cartridge to generate smoke.

The following is a specific description of the circumstances under which switch K1 will be closed:

The communication module 102 in FIG. 1 includes a coupling capacitor for signal coupling, a reader 104 and a control unit 105. The coupling capacitor in FIG. 1 takes the first capacitor C1 as an example. The signal transceiving end of the communication module 102 is connected to the conductive member 103, and is used to obtain a signal that characterizes the identity information of the cartridge after the conductive member 103 and the conductive member 203 are in contact and connected. For example, the communication module 102 may send a signal that characterizes the authentication of the cartridge, and receive a signal that characterizes the identity information of the cartridge that is fed back by the cartridge. Wherein, the first terminal of the first capacitor C1 is connected to the reader 104, and the second terminal is used as a signal transceiver terminal. The reader 104 performs signal transmission and reception through the first capacitor C1, that is, performs signal transmission and reception in a capacitive coupling manner. In FIG. 1, the radio frequency signal sent by the reader 104 can be coupled to the power supply line through the first capacitor C1. The radio frequency signal can be a signal that characterizes the authentication of the cartridge. Through the connection of the conductive member 103 and the conductive member 203, the The radio frequency signal is transmitted to the side of the cartridge.

In the schematic diagram of the power receiving system shown in FIG. 2, the signal transceiver end of the response module 202 is connected to the conductive element 203; when the conductive element 203 is in contact with the conductive element 103, the response module 202 receives the radio frequency signal sent by the communication module 102, and generates And send a signal that characterizes the identity information of the cartridge. The response module 202 includes a coupling capacitor for signal coupling and an electronic tag 204. In FIG. 2, the coupling capacitor is taken as an example of the fifth capacitor C5. The first end of the fifth capacitor C5 is connected to the electronic tag 204, and the second end is used as the signal transceiver end of the response module 202. The electronic tag 204 performs signal transmission and reception through the fifth capacitor C5, that is, performs signal transmission and reception in a capacitive coupling manner, and uses the energy of the received signal to be powered on. In FIG. 2, the fifth capacitor C5 can couple the signal (response signal) that characterizes the identity information of the cartridge sent by the electronic tag 204 to the power supply line on the side of the cartridge, and transmit it to the communication through the contact connection between the conductive member 203 and the conductive member 103 The signal transceiver end of the module 102 enables the reader 104 to receive the response signal sent by the electronic tag 204.

In an example, after the reader in FIG. 1 receives the response signal, it can send the response signal to the control center 105, which will be authenticated by the control center 105. If the authentication is passed, the power supply module 101 will be controlled to pass the conductive element 203 and the conductive element 103. Supply power to the power receiving system. For example, the control center 105 can control the power supply switch K1 to close, thereby controlling the power supply module 101 to supply power to the power receiving system. It should be noted that, in this embodiment, the manner of controlling the power supply module 101 to supply power to the power receiving system is just an example of the manner in which the power supply switch K1 is provided in the power supply module 101, and the specific implementation is not limited to this.

In another example, after the reader 104 in FIG. 1 receives the response signal, it can authenticate the response signal, and after confirming that the authentication is passed, it sends the authentication information to the control center 105. After the control center 105 receives the information that the authentication is passed, it can control the power supply switch K1 to close, allowing the power supply module 101 to supply power to the power receiving system.

In an example, the way for the reader to authenticate the response signal may be: the reader 104 and the electronic tag 204 may be provided with corresponding encryption and decryption functions. The reader 104 sends a radio frequency signal carrying a random number. The radio frequency signal can be coupled to the power supply line through the first capacitor C1, and is transmitted to the power supply line of the power receiving system through the contact connection between the POGO PIN1 and the metal sheet 1. Since the radio frequency signal is an AC signal, most of it will be received by the signal transceiver end of the response module 202, that is, it will be acquired by the electronic tag 204 through the fifth capacitor C5. The electronic tag 204 can use the energy of the acquired radio frequency signal to be powered on, and encrypt the random number carried in the radio frequency signal using a preset encryption algorithm to generate a response signal, which can represent the identity information of the power receiving system. The response signal can be coupled to the power supply line of the power receiving system through the fifth capacitor C5, and transmitted to the power supply line of the power supply system through the contact connection between the POGO PIN1 and the metal sheet 1. Since the response signal is an AC signal, most of it will be received by the signal transceiver end of the communication module 102, that is, it will be obtained by the reader 104 through the first capacitor C1. The reader 104 uses a preset decryption algorithm to decrypt the acquired response signal. When the random number obtained after decryption is the same as the random number sent to the electronic tag 204, it can be determined that the power receiving system is authenticated. Then, the certified information is sent to the control center 105, and the control center 105 controls the switch K1 to close after receiving the information. Among them, the preset encryption algorithm and decryption algorithm can be set according to actual needs, which is not specifically limited in this embodiment.

In another example, the way for the power supply system to verify the power receiving system may be: the reader 104 indicates the identity information by means of a digital signature. The electronic tag 204 can verify the identity of the cartridge through a digital signature. It should be noted that in this embodiment, the above two verification methods are only taken as examples, and the specific implementation is not limited to this.

In an example, the reader 104 is a radio frequency identification (Radio Frequency Identification, RFID) reader (RFID Reader), and the electronic tag 204 is an RFID tag (RFID TAG), where RFID includes 125Khz, 13.56Mhz, 900Mhz, etc. For frequency near field communication, TAG refers to a tag with certain security attributes, including but not limited to Mifare and Felica cards. Among them, RFID Reader and RFID TAG can be chips that implement different functions. The control unit 105 may be a control circuit board, including a processor of the electronic cigarette and other circuits. The electronic cigarette processor mainly handles various logic controls and operations, such as button detection, LED indication, smoking detection, charge and discharge management, etc.

It is worth mentioning that from Figure 1 and Figure 2, it can be seen that the communication between the host and the cartridge is not restricted by the power supply of the host to the cartridge, that is to say, even if the power switch K1 is not closed, the communication between the host and the cartridge You can also communicate. The communication loop formed between the host and the cartridge includes the reader 104, the first capacitor C1, the POGO PIN1, the metal sheet 1, the fifth capacitor C5, the electronic tag 204, the metal sheet 2, and the POGO PIN2 connected in sequence. The power source of the host is connected to the control center 105 to supply power to the control center 105, and the control center 105 is connected to the reader 104 to supply power to the reader 104. The radio frequency signal sent by the reader 104 is coupled to the power supply line through the first capacitor C1, and is transmitted to the cartridge side through the contact connection between POGO PIN1 and the metal sheet 1, and the electronic tag 204 is powered by the energy of the radio frequency signal coupled by the fifth capacitor C5 , And send out the response signal to the radio frequency signal concurrently. It can be seen that even if the host does not supply power to the cartridge, the certification of the cartridge can be completed. That is to say, the certification of the cartridge by the host in this embodiment can be performed before heating the heating wire. The smoke bomb can refuse power supply. In this embodiment, the advance authentication of the cartridge avoids the risk vulnerabilities that exist in the related technology, such as I2C, SPI, UART, etc. to realize the communication between the cartridge and the host, which usually needs to be verified after the smoking action is detected. . Moreover, the communication loop formed between the host and the cartridge is equivalent to conduction only after the two circuits are in contact, that is, the signal is directly coupled, the signal strength is high, and the communication quality is better.

Compared with the prior art, this embodiment has the following beneficial effects: 1. Change the non-contact antenna coupling mode of the reader and the electronic tag to circuit contact coupling, that is, capacitive coupling, which reduces the space and saves cost without requiring an antenna. And the communication quality is better. 2. Use capacitive coupling to send and receive signals. The communication signal can be directly coupled to the power supply line on the side of the cartridge after the cartridge is in contact with the host. The host side does not need additional POGO PIN, and the cartridge side does not require additional metal sheets. It reduces the demand for POGO PIN and metal sheet, which is beneficial to reduce the production cost of the host and the cartridge. 3. The coupled communication signal is an AC signal, which supports non-directional reverse insertion of the cartridge (rotation 180° insertion). 4. The capacitor can block the direct current, so that the communication circuit and the power supply circuit are isolated without interfering with each other, and the communication between the host and the cartridge is not restricted by the host's power supply to the heating wire in the cartridge, that is, the host can not match the cartridge In the case of the heating wire in the power supply, it can communicate with the smoke bomb at any time.

The second embodiment of the present application relates to a power supply system. The schematic diagram of the power supply system in this embodiment may be shown in FIG. 3. The implementation details in this embodiment will be described in detail below. The following content is only provided for ease of understanding and is not necessary for implementing this solution.

The power supply system in this embodiment is different from the first embodiment in that the coupling capacitor in the communication module 102 includes: a first capacitor C1 and a second capacitor C2 that is symmetrical to the first capacitor C1; among them, C1 and C2 The value of the capacitance can be the same, and the specific value can be set according to actual needs, which is not specifically limited in this embodiment. The following mainly describes the differences between this embodiment and the first embodiment:

In FIG. 3, one end of the reader 104 is connected to the reference ground; the first end of the first capacitor C1 and the first end of the second capacitor C2 are respectively connected to both ends of the reader 104, and the second end of the first capacitor C1 Both the second terminal and the second terminal of the second capacitor C2 serve as the signal transceiver terminal of the communication module 102, so that the signal sent by the reader 104 through the signal transceiver terminal is a differential signal. That is, the first capacitor C1 can couple the radio frequency signal from the reader 104 to the power supply line, and the second capacitor C2 can couple the radio frequency signal from the reader 104 to the ground line. Among them, the RF signal coupled on the power supply line is transmitted to the power supply line on the side of the cartridge through the contact connection between POGO PIN1 and the metal sheet 1, and the RF signal coupled on the ground line is transmitted to the power supply line through the contact connection between POGO PIN2 and the metal sheet 2 The ground on the side of the cartridge.

In an example, a schematic diagram of the power receiving system may be shown in FIG. 4. Compared with FIG. 2, the coupling capacitor in the response module 202 in FIG. 4 includes: a fifth capacitor C5 and a sixth capacitor C5 that is symmetrical to the fifth capacitor C5. Capacitor C6; Among them, the capacitance value of C5 and C6 can be the same. The first end of the fifth capacitor C5 and the first end of the sixth capacitor C6 are respectively connected to the two ends of the electronic tag 204, that is, the two ends of the electronic tag 204 are connected in series with the fifth capacitor C5 and the sixth capacitor C6, respectively. The second end of the fifth capacitor C5 and the second end of the sixth capacitor C6 are both used as the signal receiving and sending ends of the response module 202, so that the signal sent by the electronic tag 204 through the signal receiving and sending ends is a differential signal. That is, the fifth capacitor C5 can receive the radio frequency signal transmitted from the communication module 102 to the power supply line on the cartridge side through capacitive coupling, and the sixth capacitor C6 can receive the ground wire transmitted from the communications module 102 to the cartridge side through capacitive coupling. RF signal on the The electronic tag 204 can obtain the radio frequency signal coupled by the fifth capacitor C5 and the sixth capacitor C6, and use the energy of the obtained radio frequency signal to supply power, and generate and send a response signal to the radio frequency signal. The fifth capacitor C5 can couple the response signal from the electronic tag 204 to the power supply line on the side of the cartridge, and the sixth capacitor C6 can couple the response signal from the electronic tag 204 to the ground on the side of the cartridge. Among them, the response signal coupled on the power supply line is transmitted to the power supply line of the power supply system through the contact connection between POGO PIN1 and metal sheet 1, and the RF signal coupled on the ground line is transmitted to the power supply through the contact connection between POGO PIN2 and metal sheet 2 The ground of the system. The reader 104 in the power supply system in FIG. 3 can obtain the response signal from the electronic tag 204 through the first capacitor C1 and the second capacitor C2.

Compared with the prior art, in this embodiment, by setting a second capacitor symmetrical to the first capacitor and a sixth capacitor symmetrical to the fifth capacitor, the signals transmitted and received by the reader and the electronic tag are differential signals, which is beneficial to improve The anti-interference ability of the signal.

The third embodiment of the present application relates to a power supply system, and this embodiment mainly provides a way to perform impedance matching between the power supply system and the power receiving system. The implementation details in this embodiment will be described in detail below. The following content is only provided for ease of understanding and is not necessary for implementing this solution.

In an example, the schematic diagram of the power supply system can be shown in FIG. 5. Compared with FIG. 1, the difference between FIG. 5 and FIG. 1 is that the communication module 102 also includes a capacitor for impedance matching, and FIG. 5 is used for impedance matching. The matching capacitor takes the third capacitor C3 as an example. The first terminal of the third capacitor C3 is connected to the second terminal of the first capacitor C1, and the second terminal is grounded. Impedance matching reflects the power transmission relationship between the power supply system and the power receiving system. When the power supply system and the power receiving system achieve impedance matching, the maximum output power can be obtained. The manner of implementing impedance matching in this embodiment is similar to the manner of implementing impedance matching of an antenna in the related art, and therefore, no further description is given here.

In another example, the schematic diagram of the power supply system may be as shown in FIG. 6. Compared with FIG. 5, the capacitor used for impedance matching in the power supply system in FIG. 6 includes two mutually symmetrical capacitors. In FIG. 6, the third capacitor C3 and the fourth capacitor C4 are taken as examples; among them, the capacitors of C3 and C4 The capacitance value can be the same, and the specific value can be calculated according to the impedance matching method of the antenna in the related art, which is not specifically limited in this embodiment. In Figure 6, the first terminal of the third capacitor C3 is connected to the second terminal of the first capacitor C1; the first terminal of the fourth capacitor C4 is connected to the second terminal of the second capacitor C2; the second terminal of the third capacitor C3 And the second end of the fourth capacitor C4 are both connected to the reference ground.

The above-mentioned Figures 5 and 6 show the way of impedance matching in the power supply system. In specific implementation, impedance matching can also be performed in the power receiving system. For example, referring to FIG. 7, compared with FIG. 4, the response module 202 of the power receiving system in FIG. 7 may also include a seventh capacitor C7 for impedance matching; an electronic tag 204, a fifth capacitor C5, and a sixth capacitor C6. The formed series branch is connected in parallel with the seventh capacitor C7.

It should be noted that, taking FIGS. 4 and 6 as examples, the capacitors C1, C2, C5, and C6 are used for signal coupling, and C3, C4 are used for impedance matching. The RFID radio frequency signal in the figure is a differential signal, so symmetrical capacitors C1 and C2, C3 and C4, C5 and C6 are required. If the RFID radio frequency signal is a single-ended signal, half of the capacitance can be omitted, that is, only C1, C3, and C5 are needed.

In addition, in order to further increase the output power, a power amplifier may be added. For example, for a power supply system, a power amplifier may be connected in series between the coupling capacitor of the reader 104 and the communication module 102. For example, in FIG. 1, a power amplifier may be connected in series between the reader 104 and the first capacitor C1; in FIG. 3, a power amplifier may be connected in series between the reader 104 and the first capacitor C1, and/or, in the reader A power amplifier is connected in series between 104 and the second capacitor C2. For the power receiving system, a power amplifier can be connected in series between the coupling capacitor of the response module 202 and the electronic tag 204. For example, in Figure 2, a power amplifier can be connected in series between the fifth capacitor C5 and the electronic tag 204; in Figure 4, a power amplifier can be connected in series between the fifth capacitor C5 and the electronic tag 204, and/or in the sixth A power amplifier is connected in series between the capacitor C6 and the electronic tag 204.

Compared with the prior art, in this embodiment, a capacitor for impedance matching is added to ensure the signal strength of the transmitted signal, which is beneficial to obtain the maximum output power.

The fourth embodiment of the present application relates to a power supply system. The schematic diagram of the power supply system in this embodiment may be shown in FIG. 8. The implementation details in this embodiment will be described in detail below. The following content is only provided for ease of understanding and is not necessary for implementing this solution.

The difference between the power supply system in this embodiment and the first embodiment is that the power supply system further includes: an inductor L1, the voltage output end of the power supply module 101 is connected to the conductive element 103 of the power supply system through the inductor L1; the signal of the communication module 102 The transceiver end is directly connected to the conductive element 103 of the power supply system. That is, one end of the power supply switch K1 in Figure 8 is connected to POGO PIN1 through the inductor L1, and the second end of the first capacitor C1 is directly connected to POGO PIN1. When the power supply switch K1 is closed, the power supply loop for the heating wire is turned on, and the inductor L1 can prevent the radio frequency signal from the second end of the first capacitor C1, which is the signal receiving and sending end, from being attenuated by other circuits that may exist in the control center 105. . In other words, the inductor L1 can make the radio frequency signal coupled by the first capacitor C1 be transmitted to the power receiving system as much as possible.

In an example, an inductor L2 can also be connected in series in front of the heating wire 201. Referring to FIG. 9, the voltage input end of the heating wire 201 is connected to the conductive element 203 through the inductor L2; the signal transceiver end of the response module 202 is directly connected to the conductive element 203. That is, the voltage input end of the heating wire 201 in FIG. 9 is connected to the metal sheet 1 through the inductor L2, and the second end of the fifth capacitor C5 is directly connected to the metal sheet 1. When the power supply switch K1 is closed, the power supply loop for the heating wire is turned on, and the inductor L2 can prevent the response or received radio frequency signal from the second end of the fifth capacitor C5, which is the signal receiving and sending end, from running to the branch where the heating wire 201 is located and attenuating . That is, the radio frequency signals transmitted from the host side to the cartridge side are transmitted as far as possible to the response module 202 on the cartridge side to be received by the electronic tag 204, and the response signal from the electronic tag 204 is transmitted to the host side and received by the reader 104 as much as possible.

It should be noted that in this embodiment, only the inductance may be provided in the power supply system, or only the inductance may be provided in the power receiving system, or both the power supply system and the power receiving system may be provided with inductances. However, this embodiment does not specifically limit this, and those skilled in the art can flexibly set it according to actual needs. Moreover, when symmetrical capacitors are set, symmetrical inductances can also be set. For example, in the power supply system, for symmetrical capacitors C1 and C2, in addition to setting the inductor L1 at the position of Figure 8, you can also set the symmetrical position with the inductor L1 on the ground line. An inductance is set, and the inductance can prevent the communication signal coupled by C2 from being transmitted to the control unit 105 along the ground line and attenuated.

Compared with the prior art, in this embodiment, the inductance is set so that the communication signal (radio frequency signal and response signal) between the host side and the cartridge side can only be transmitted in the communication loop, avoiding the attenuation caused by connecting to other loops. It is helpful to improve the signal quality of the communication signal.

The fifth embodiment of the present application relates to a host of an electronic cigarette, and the host is provided with a power supply system as in any of the foregoing embodiments.

The sixth embodiment of the present application relates to a power receiving system, which may refer to FIG. 2 including: a power receiving module 201, a response module 202, and a conductive element 203; among them, the power receiving module 201 in FIG. 2 uses a heating wire as an example. In the specific implementation, it is not limited to this. In FIG. 2, the voltage input terminal of the power receiving module 201 and the signal transceiver terminal of the response module 202 are respectively connected to the conductive member 203; after the conductive member 203 contacts the conductive member 103, the response module 202 receives the characterization through the conductive member 203 and the conductive member 103 A signal for authenticating the power receiving system and sending a signal that characterizes the identity information of the power receiving system; the power receiving system is powered after being authenticated by the power supply system; the response module 202 includes a coupling capacitor for signal coupling and an electronic tag 204, as shown in Fig. The coupling capacitor in 2 uses the fifth capacitor C5 as an example. The first end of the fifth capacitor C5 is connected to the electronic tag 204, and the second end is used as the signal transmitting and receiving end of the response module 202; the electronic tag 204 transmits and receives signals through the fifth capacitor C5, and is powered on by the energy of the received signal.

It should be noted that the power supply system in the first to fourth embodiments described above can be used in conjunction with the power receiving system in this embodiment. The related technical details mentioned in the first to fourth embodiments are still valid in this embodiment, and the technical effects that can be achieved in the first to fourth embodiments can also be achieved in this embodiment. In addition, since the power supply system used in conjunction with the power receiving system has been specifically described in the first to fourth embodiments, in order to reduce repetition, it will not be repeated here. Correspondingly, the related technical details mentioned in this embodiment can also be applied to the first to fourth embodiments.

The seventh embodiment of the present application relates to an electronic cigarette cartridge. The above-mentioned power receiving system is provided in the cartridge, and the power receiving module in the power receiving system is a heating wire.

It is worth mentioning that, in order to highlight the innovative part of the present invention, in the first and second embodiments, devices that are not closely related to solving the technical problems proposed by the present invention are not introduced, but this does not indicate the original There are no other devices in the embodiment.

A person of ordinary skill in the art can understand that the above-mentioned embodiments are specific embodiments for realizing the present application, and in practical applications, various changes can be made to them in form and details without departing from the spirit and spirit of the present application. range.

Claims

A power supply system, characterized by comprising: a power supply module, a communication module, and a conductive element;

The voltage output terminal of the power supply module and the signal transceiver terminal of the communication module are respectively connected to the conductive parts of the power supply system;

When the conductive element of the power supply system contacts the conductive element in the power receiving system, the communication module obtains a signal that characterizes the identity information of the power receiving system through the conductive element of the power supply system and the conductive element in the power receiving system ；

The communication module includes a coupling capacitor for signal coupling, a reader, and a control unit;

The first end of the coupling capacitor of the communication module is connected to the reader, and the second end of the coupling capacitor of the communication module serves as the signal transceiving end of the communication module;

The reader performs signal transmission and reception through the coupling capacitor of the communication module;

The control unit is connected to the reader, and is used to authenticate the power receiving system according to the identity information of the power receiving system, and after the authentication is passed, control the power supply module to pass through the conductive parts of the power supply system and The conductive element in the power receiving system supplies power to the power receiving system.
The power supply system according to claim 1, wherein the coupling capacitor of the communication module comprises: a first capacitor and a second capacitor symmetrical to the first capacitor;

The first end of the first capacitor and the first end of the second capacitor are respectively connected to both ends of the reader, and the second end of the first capacitor and the second end of the second capacitor Both serve as the signal receiving and sending end of the communication module.
The power supply system according to claim 1, wherein the communication module further comprises: a capacitor for impedance matching;

The first end of the capacitor for impedance matching is connected to the second end of the coupling capacitor of the communication module, and the second end is grounded.
3. The power supply system of claim 2, wherein the communication module further comprises: a third capacitor and a fourth capacitor for impedance matching;

The first end of the third capacitor is connected to the second end of the first capacitor;

The first end of the fourth capacitor is connected to the second end of the second capacitor;

The second end of the third capacitor and the second end of the fourth capacitor are both connected to the reference ground.
The power supply system according to any one of claims 1 to 4, wherein the power supply system further comprises: an inductor;

The voltage output end of the power supply module is connected to the conductive element of the power supply system through the inductor;

The signal transceiver end of the communication module is directly connected to the conductive element of the power supply system.
The power supply system according to any one of claims 1 to 5, wherein the communication module further comprises: a power amplifier;

The power amplifier of the communication module is connected in series between the reader and the coupling capacitor of the communication module.
An electronic cigarette host, characterized in that the power supply system according to any one of claims 1 to 6 is provided in the host.
A power receiving system, characterized by being used in conjunction with the power supply system according to any one of claims 1 to 6, and comprising: a power receiving module, a response module, and a conductive element;

The voltage input terminal of the power receiving module and the signal receiving and sending terminal of the response module are respectively connected to the conductive parts of the power receiving system;

After the conductive member of the power receiving system contacts the conductive member in the power supply system, the response module receives the characteristic of receiving the power through the conductive member of the power receiving system and the conductive member of the power supply system. The system performs a signal for authentication and sends a signal that characterizes the identity information of the power receiving system; the power receiving system is powered after being authenticated by the power supply system;

The response module includes a coupling capacitor and an electronic tag for signal coupling;

The first end of the coupling capacitor of the response module is connected to the electronic tag, and the second end of the coupling capacitor of the response module serves as the signal transceiving end of the response module; wherein, the electronic tag passes the response The coupling capacitor of the module performs signal transmission and reception, and uses the energy of the received signal to power up.
The power receiving system according to claim 8, wherein the power receiving system is used in conjunction with the power supply system according to claim 2 or 4; the coupling capacitor of the response module includes: the fifth capacitor and the power supply system. The sixth capacitor that is symmetrical to the fifth capacitor;

The first end of the fifth capacitor and the first end of the sixth capacitor are respectively connected to two ends of the electronic tag;

Both the second end of the fifth capacitor and the second end of the sixth capacitor serve as the signal receiving and sending ends of the response module.
9. The power receiving system according to claim 9, wherein the response module further comprises: a seventh capacitor for impedance matching;

The series branch formed by the electronic tag, the fifth capacitor, and the sixth capacitor is connected in parallel with the seventh capacitor.
The power receiving system according to any one of claims 8 to 10, wherein the power receiving system further comprises: an inductor;

The voltage input end of the power receiving module is connected to the conductive element of the power receiving system through the inductor;

The signal transceiving end of the response module is directly connected to the conductive element of the power receiving system.
The power receiving system according to any one of claims 8 to 11, wherein the response module further comprises: a power amplifier;

The power amplifier of the response module is connected in series between the electronic tag and the coupling capacitor of the response module.
An electronic cigarette cartridge, wherein the cartridge is provided with the power receiving system according to any one of claims 8 to 12, and the power receiving module is a heating wire.