Electronic cigarette product quality detection system
By using a power switching circuit and a Type-C interface, non-destructive testing of e-cigarette lithium batteries is achieved, solving the problems of forcibly removing the casing and cumbersome operations in existing technologies, improving testing efficiency and safety, and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA NAT TOBACCO CORP HENAN PROVINCIAL CO
- Filing Date
- 2025-04-30
- Publication Date
- 2026-04-28
AI Technical Summary
In current safety testing of lithium batteries for electronic cigarettes, forcibly removing the casing is difficult, cumbersome, and destructive testing increases costs and has low efficiency.
The device employs a power switching circuit and a Type-C interface to enable rapid connection between the testing instrument and the lithium battery. This eliminates the need for forcibly removing the e-cigarette casing or stripping the solder, simplifying the testing process.
It improves testing efficiency, reduces testing costs, ensures the safety and flexibility of the testing process, and adapts to the testing needs of different types of e-cigarettes.
Smart Images
Figure CN224176703U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of electronic cigarette quality testing technology, specifically relating to a quality testing system for lithium batteries in electronic cigarette products. Background Technology
[0002] In the safety testing of lithium batteries for e-cigarettes, destructive testing is a common method. This testing method is typically used to assess the safety and reliability of the battery under extreme conditions, ensuring that it will not pose a danger, such as fire or explosion, under normal use and foreseeable misuse. The existing destructive testing process is as follows: 1. Forced Removal: Testing personnel need to forcibly remove the e-cigarette casing to expose the internal charging board and lithium battery. This step is usually quite difficult because e-cigarettes are typically designed with high sealing. 2. Solder Removal: Using a soldering iron, the solder between the charging board output terminal and the lithium battery input terminal is removed, separating the lithium battery from the circuit. 3. Power Line Connection: The lithium battery is connected to a separate power line via a wire and connected to the power line of the testing instrument. 4. Boosted Charging: The testing instrument continuously provides boosted charging to the lithium battery until the set limit is reached, observing the lithium battery's reaction under extreme conditions, such as whether it catches fire or explodes.
[0003] Problems with existing testing methods: 1. Difficulty in forceful dismantling: Due to the high sealing properties of e-cigarettes, forceful dismantling is not only difficult but may also injure testing personnel and reduce testing efficiency. 2. Cumbersome and inefficient operation process: Especially for glass lithium batteries and the operation of connecting testing instruments, the process is cumbersome and inefficient. 3. Limitations of destructive testing: Even if the product meets the standards, destructive testing will render all components unusable, increasing testing costs.
[0004] Therefore, the development of non-destructive testing technologies for the safety testing of lithium batteries in electronic cigarettes is particularly necessary. Utility Model Content
[0005] In view of the defects and problems of existing technologies, this utility model aims to provide a detection system that does not require the forced removal of the electronic cigarette casing or damage to the lithium battery and circuitry. It achieves rapid connection between the detection instrument and the lithium battery through a power switching circuit, thereby improving detection efficiency and safety and reducing detection costs.
[0006] The solution to the technical problem of this utility model is as follows: An electronic cigarette product quality testing system is adopted, including an electronic cigarette lithium battery, a charging protection circuit, and a testing instrument. The charging protection circuit includes the original positive input terminal A and the original negative input terminal B located at the Type-C female connector, and the charging protection circuit includes a positive output terminal A' and a negative output terminal B'. It also includes a power switching circuit, with a control line C and a new power positive line D led out from the Type-C female connector of the charging protection circuit. The power switching circuit includes a PMOS and an NMOS. The drain of the PMOS is connected to the positive output terminal A' of the charging protection circuit, and the drain of the NMOS is connected to the new power positive line D. The source of the PMOS and the source of the NMOS are connected in series and then connected to the positive terminal of the electronic cigarette lithium battery. The negative terminal of the electronic cigarette lithium battery is connected to the negative output terminal B' of the charging protection circuit. The gate of the PMOS and the gate of the NMOS are connected in series and then connected to the control line C.
[0007] Preferably, a new power negative line E is led out from the Type-C female connector, and the negative terminal of the electronic cigarette lithium battery is connected to the new power negative line E.
[0008] Preferably, the testing instrument provides a charging control line, with one end connected to a Type-C male connector. The testing instrument provides a new power positive terminal (D+), a new power negative terminal (B-), and a control terminal (C+), which are respectively connected to the new power positive terminal (D), the negative input terminal (B), and the control terminal (C) of the Type-C female connector via the Type-C male connector. Alternatively, the testing instrument provides a charging control line, with one end connected to a Type-C male connector. The testing instrument provides a new power positive terminal (D+), a new power negative terminal (B-), and a control terminal (C+), which are respectively connected to the new power positive terminal (D), the new power negative terminal (B-), and the control terminal (C) of the Type-C female connector via the Type-C male connector.
[0009] Preferably, the charging protection circuit and the power switching circuit are located on the circuit board.
[0010] The beneficial effects of this utility model are:
[0011] 1. Non-destructive testing: The testing instrument can be quickly connected to the lithium battery through a power switching circuit and a Type-C interface, without the need to forcibly remove the e-cigarette casing or strip the solder, thus avoiding damage to the e-cigarette casing and lithium battery and preserving the integrity of the product.
[0012] 2. Improved testing efficiency: The testing process has been simplified, reducing the steps of forced removal and cumbersome operations, which has significantly improved testing efficiency and reduced testing time and labor costs.
[0013] 3. Enhanced safety: It avoids the risk of injury to testing personnel that may result from violent demolition, while reducing safety hazards caused by improper operation, thus ensuring the safety of the testing process.
[0014] 4. Flexibility and adaptability: By switching the power path through control signals, it can flexibly switch between normal charging mode and detection mode to adapt to different types of electronic cigarettes and detection needs. Attached Figure Description
[0015] Figure 1 This is a relational block diagram of the electronic cigarette product quality testing system of the first embodiment of this utility model;
[0016] Figure 2 yes Figure 1 Diagram of the wiring terminals of the Type-C female connector;
[0017] Figure 3 This is a relationship diagram of the electronic cigarette product quality inspection system of the second embodiment of this utility model;
[0018] Figure 4 yes Figure 3 Diagram of the wiring terminals of the Type-C female connector;
[0019] The numbers in the diagram are: 1-Electronic cigarette lithium battery; 2-Circuit board; 3-Charging protection circuit; 4-Type-C female connector; 5-Type-C male connector; 6-Testing instrument; 7-Power switching circuit; 8-Original charger. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0021] Example 1: As Figure 1 The electronic cigarette product quality testing system shown includes an electronic cigarette lithium battery 1, a circuit board 2, a charging protection circuit 3, a Type-C female connector 4, a Type-C male connector 5, testing instruments 6, and a power switching circuit 7. The charging protection circuit 3 and the power switching circuit 7 are located on the circuit board 2. The input terminal of the charging protection circuit 3 is connected to the Type-C female connector 4. The Type-C female connector 4... Figure 2 As shown, the charging protection circuit 3 includes the original positive input terminal A and the original negative input terminal B, as well as the control line C and the new power supply positive line D. The charging protection circuit 3 includes the positive output terminal A' and the negative output terminal B'.
[0022] like Figure 1The power switching circuit 7 includes PMOS and NMOS. Based on NMOS: when there is no voltage at the gate, the drain and source are closed; when a voltage is applied to the gate, the drain and source are connected. Based on PMOS: when there is no voltage at the gate, the drain and source are open; when a voltage is applied to the gate, the drain and source are closed. The drain of the PMOS is connected to the positive output terminal A' of the charging protection circuit 3, the drain of the NMOS is connected to the positive power supply line D, the source of the PMOS and the source of the NMOS are connected in series to the positive terminal of the electronic cigarette lithium battery 1, the negative terminal of the electronic cigarette lithium battery 1 is connected to the negative output terminal B' of the charging protection circuit 3, and the gate of the PMOS and the gate of the NMOS are connected in series to the control line C.
[0023] The testing instrument 6 provides a charging control line, the end of which is connected to a Type-C male connector 5. The testing instrument 6 provides a new power positive terminal D+, a new power negative terminal B-, and a control terminal C+, which are respectively connected to the new power positive terminal D, the negative input terminal B, and the control terminal C of the Type-C female connector 4 through the Type-C male connector 5.
[0024] Based on the aforementioned testing system, there is no need to forcibly remove the e-cigarette casing or disconnect the power cord of the e-cigarette lithium battery. Instead, the Type-C male connector 5 of the testing instrument 6 is directly connected to the Type-C female connector 4 of the e-cigarette. Then, the control electrode C+ of the testing instrument 6 is supplied with a high level, which disconnects the PMOS and connects the NMOS through the control line C, thus disconnecting the positive output terminal A' from the positive terminal of the lithium battery. At the same time, the new positive power line D is connected to the positive terminal of the lithium battery. Then, the new positive power line D of the testing instrument 6 measures the voltage, current, capacity, and other parameters of the e-cigarette lithium battery under different charge and discharge conditions according to the existing testing method, and evaluates the thermal and electrochemical performance of the e-cigarette lithium battery.
[0025] In this embodiment, the above-described scheme for testing e-cigarettes first connects the Type-C male connector of the testing instrument to the Type-C female connector of the e-cigarette, ensuring a secure and reliable connection. Then, a high-level signal is provided through the control electrode of the testing instrument, disconnecting the PMOS and connecting the NMOS via the control line. This disconnects the positive output of the charging protection circuit from the positive terminal of the lithium battery. Simultaneously, the positive power supply line D is connected to the positive terminal of the lithium battery, and the negative input line B is connected to the negative terminal of the lithium battery. Using the positive power supply line of the testing instrument, the e-cigarette lithium battery is tested under different charge and discharge conditions, such as continuous voltage boosting until a set limit is reached, according to existing testing methods. During the test, the testing instrument records parameters such as voltage, current, and capacity of the lithium battery in real time. Based on this data, the thermodynamic and electrochemical performance of the e-cigarette lithium battery is evaluated, and its reaction under extreme conditions, such as whether it catches fire or explodes, is observed. After the test is completed, the testing instrument is disconnected from the e-cigarette. Based on the recorded data and observed reactions, a comprehensive evaluation of the safety and performance of the e-cigarette lithium battery is conducted to determine whether it meets relevant standards and requirements.
[0026] Example 2: Another electronic cigarette product quality testing system, such as Figure 3 As shown, it includes an electronic cigarette lithium battery 1, a circuit board 2, a charging protection circuit 3, a Type-C female connector 4, a Type-C male connector 5, a testing instrument 6, and a power switching circuit 7, etc.
[0027] The charging protection circuit 3 includes the original positive input terminal A and the original negative input terminal B located at the Type-C female connector 4. The charging protection circuit 3 also includes a positive output terminal A' and a negative output terminal B'. A control line C, a new power positive line D, and a new power negative line E are respectively led out from the Type-C female connector 4 of the charging protection circuit 3.
[0028] The power switching circuit 7 includes PMOS and NMOS. The drain of the PMOS is connected to the positive output terminal A' of the charging protection circuit 3. The drain of the NMOS is connected to the positive terminal D of the new power supply. The source of the PMOS is connected in series with the source of the NMOS and then connected to the positive terminal of the electronic cigarette lithium battery 1. The gate of the PMOS is connected in series with the gate of the NMOS and then connected to the control line C. The negative terminal of the electronic cigarette lithium battery 1 is connected to the negative terminal E of the new power supply.
[0029] The testing instrument 6 provides a charging control line, the end of which is connected to a Type-C male connector 5. The testing instrument 6 provides a new power positive terminal D+, a new power negative terminal B-, and a control terminal C+, which are respectively connected to the new power positive terminal D, new power negative terminal E, and control terminal C of the Type-C female connector 4 through the Type-C male connector 5.
[0030] In this embodiment, when testing e-cigarettes, the Type-C male connector of the testing instrument is first connected to the Type-C female connector of the e-cigarette to ensure a secure and reliable connection. Then, a high-level signal is provided through the control electrode of the testing instrument. The control line disconnects the PMOS and connects the NMOS, thus disconnecting the positive output of the charging protection circuit from the positive terminal of the lithium battery. Simultaneously, the new power supply positive line D is connected to the positive terminal of the lithium battery, and the new power supply negative line E is connected to the negative terminal of the lithium battery. Using the new power supply positive line of the testing instrument, the e-cigarette lithium battery is tested under different charge and discharge conditions according to existing testing methods, such as continuous voltage boosting until a set limit is reached. For example, the following testing steps are used: simulating an overcharge scenario to check if the battery has overcharge protection to prevent damage or danger due to overcharging; testing the battery's response under short-circuit conditions to ensure it has short-circuit protection to prevent overheating or fire; testing the battery's performance in a high-temperature environment to evaluate its safety under high-temperature conditions; and testing the battery's performance under continuous discharge conditions to ensure it can still function normally under high load. During testing, the testing instrument records parameters such as voltage, current, and capacity of the lithium battery in real time. Based on this data, it evaluates the thermal and electrochemical performance of the e-cigarette lithium battery and observes its reaction under extreme conditions, such as whether it catches fire or explodes. After testing, the testing instrument is disconnected from the e-cigarette. Based on the recorded data and observed reactions, a comprehensive evaluation of the safety and performance of the e-cigarette lithium battery is conducted to determine whether it meets relevant standards and requirements.
[0031] The specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within the protection scope of this utility model.
Claims
1. An electronic cigarette product quality testing system, comprising an electronic cigarette lithium battery (1), a charging protection circuit (3), and a testing instrument (6), wherein the charging protection circuit (3) includes a positive input terminal A and a negative input terminal B located on a Type-C female connector (4), and the charging protection circuit (3) includes a positive output terminal A' and a negative output terminal B', characterized in that, It also includes a power switching circuit (7), from which control line C and new power positive line D are respectively led out from the Type C female connector (4) of the charging protection circuit (3). The power switching circuit (7) includes PMOS and NMOS. The drain of PMOS is connected to the positive output terminal A' of the charging protection circuit (3), the drain of NMOS is connected to the new power positive line D, the source of PMOS and the source of NMOS are connected in series and then connected to the positive terminal of the electronic cigarette lithium battery (1), the negative terminal of the electronic cigarette lithium battery (1) is connected to the negative output terminal B' of the charging protection circuit (3), and the gate of PMOS and the gate of NMOS are connected in series and then connected to the control line C.
2. The electronic cigarette product quality inspection system according to claim 1, characterized in that, A new power supply negative line E is drawn from the Type-C female connector (4), and the negative terminal of the electronic cigarette lithium battery (1) is connected to the new power supply negative line E.
3. The electronic cigarette product quality inspection system according to claim 1, characterized in that, The testing instrument (6) provides a charging control line, the end of which is connected to a Type C male connector (5). The testing instrument (6) provides a new power positive terminal D+, a new power negative terminal B-, and a control terminal C+, which are respectively connected to the new power positive terminal D, negative input terminal B, and control line C of the Type C female connector (4) through the Type C male connector (5).
4. The electronic cigarette product quality inspection system according to claim 2, characterized in that, The testing instrument (6) provides a charging control line, the end of which is connected to a Type C male connector (5). The testing instrument (6) provides a new power positive terminal D+, a new power negative terminal B-, and a control terminal C+, which are respectively connected to the new power positive terminal D, new power negative terminal E, and control terminal C of the Type C female connector (4) through the Type C male connector (5).
5. The electronic cigarette product quality inspection system according to claim 1, characterized in that, The charging protection circuit (3) and the power switching circuit (7) are located on the circuit board (2).