ELECTRONIC CIGARETTE CARTRIDGE DUAL-SEAL REVERSE PRESSURE DIFFERENTIAL LIQUID INJECTION METHOD AND ELECTRONIC CIGARETTE CARTRIDGE USING THE METHOD FOR INJECTING LIQUID

Abstract

The present disclosure provides a dual-seal reverse pressure differential cartridge E-liquid injection method. The method includes: selecting an E-liquid guiding body configured to absorb, to a maximum degree, an E-liquid stored in an E-liquid storage tank, to avoid leakage of the E-liquid, while providing a smooth supply of the E-liquid. The method also includes assembling the E-liquid guiding body with a cartridge that includes an E-liquid storage tank. The E-liquid guiding body is in fluidic communication with the E-liquid in the E-liquid storage tank. In a negative pressure environment, the E-liquid is injected into the E-liquid storage tank. The E-liquid has a pressure P1. After the injection is completed, the cartridge is placed in a sealing bag, which is then sealed. The pressure inside the sealing bag is P2, P2>P1. The disclosed method can effectively avoid leakage of the E-liquid due to pressure changes in the external atmosphere.

Claims

1. A method for injecting an E-liquid into a cartridge of an electronic cigarette, comprising: a) selecting an E-liquid guiding body, and assembling the E-liquid guiding body with the cartridge; wherein the cartridge includes an E-liquid storage tank configured for receiving an injection of the E-liquid, the E-liquid guiding body is configured to be in a fluidic communication with the E-liquid that is injected into the E-liquid storage tank, b) injecting the E-liquid into the E-liquid storage tank of the cartridge; and c) sealing the cartridge in a sealing bag after the injection of the E-liquid is completed, wherein, a pressure inside the E-liquid storage tank of the cartridge after the cartridge is injected with the E-liquid is P1, a pressure of an external environment external to the E-liquid storage tank of the cartridge after the cartridge is injected with the E-liquid is P2, P2>P1, that is, a negative pressure or a reverse pressure differential is formed inside the E-liquid storage tank of the cartridge relative to the pressure of the external environment external to the E-liquid storage tank of the cartridge, and wherein an anti-E-liquid-leakage coefficient P1 of the E-liquid guiding body and an anti-air-resistance coefficient P2 of the E-liquid guiding body satisfy the following condition: (P2P1)(P2P1)P1, such that the E-liquid guiding body absorbs, to a maximum degree, the E-liquid from the E-liquid storage tank after the cartridge has been injected with the E-liquid, while avoiding a leakage of the E-liquid in a non-operating state and maintaining a smooth E-liquid supply in an operating state.

2. The method for injecting the E-liquid into the cartridge of the electronic cigarette of claim 1, wherein there exists a sealed space between the cartridge and the sealing bag after the sealing bag is sealed, a pressure of the sealed space inside the sealing bag, which is a pressure of an external environment external to the E-liquid storage tank of the cartridge that has been sealed in the sealing bag is P2, P2>P1, which indicates that a negative pressure is formed inside the E-liquid storage tank of the cartridge relative to the sealed space in the sealing bag that is external to the E-liquid storage tank, and an elastic shrinking capability of the sealing bag is configured such that the sealing bag does not undergo a deformation greater than a predetermined deformation level when an external atmospheric pressure drops by 10-20%, and that the pressure P2 of the sealed space inside the sealing bag does not undergo a change greater than a predetermined pressure change level.

3. The method for injecting the E-liquid into the cartridge of the electronic cigarette of claim 2, wherein in the step b), the E-liquid having a normal pressure is injected into the E-liquid storage tank, wherein a pressure of the E-liquid injected into the E-liquid storage tank has the pressure P1, P1 is the normal pressure, which is the external atmospheric pressure P0, in the step c), the cartridge that has been injected with the E-liquid in a normal pressure environment is sealed in the sealing bag having a pressure higher than the normal pressure, wherein the pressure of the sealed space inside the sealing bag after the sealing bag is sealed is P2, and the sealing bag having the pressure higher than the normal pressure is realized by injecting into the sealing bag a gas having a pressure higher than the normal pressure, the pressure of the sealed space inside the sealing bag after the sealing bag is sealed is P2, P2>P1=P0, wherein the gas having the pressure higher than the normal pressure is an air or an inert gas.

4. The method for injecting the E-liquid into the cartridge of the electronic cigarette of claim 2, wherein in the step b), the pressure P1 of the E-liquid injected into the E-liquid storage tank is lower than the external atmospheric pressure P0, and is lower than the pressure P2 of the sealed space of the sealing bag that is external to the E-liquid storage tank, wherein the pressure P1 is the negative pressure, thereby forming the negative pressure inside the E-liquid storage tank of the cartridge relative to the pressure P2 of the sealed space inside the sealing bag that is external to the E-liquid storage tank of the cartridge.

5. The method for injecting the E-liquid into the cartridge of the electronic cigarette of claim 4, wherein the step b) comprises: after the E-liquid is injected into the E-liquid storage tank of the cartridge in a normal pressure environment, vacuuming the E-liquid storage tank of the cartridge, wherein the pressure inside the E-liquid storage tank after the vacuuming is lower than the pressure P2 of the sealed space inside the sealing bag that is external to the E-liquid storage tank of the cartridge, and wherein the pressure P1 is the negative pressure, and the step c) comprises: sealing, in the sealing bag in the normal pressure environment, the cartridge of the electronic cigarette in which the negative pressure has been formed in the E-liquid storage tank, wherein the pressure P2 inside the sealing bag after the sealing bag is sealed is equal to the normal pressure P0, which is the external atmospheric pressure, and wherein P2=P0>P1, thereby forming the negative pressure inside the E-liquid storage tank of the cartridge relative to the pressure P2 of the sealed space inside the sealing bag that is external to the E-liquid storage tank of the cartridge.

6. The method for injecting the E-liquid into the cartridge of the electronic cigarette of claim 4, wherein the step b) comprises: injecting the E-liquid into the E-liquid storage tank of the cartridge in a negative pressure environment, wherein the pressure P1 of the E-liquid in the E-liquid storage tank of the cartridge is lower than the pressure P2 of the sealed space inside the sealing bag that is external to the E-liquid storage tank of the cartridge, and wherein P1 is the negative pressure, and the step c) comprises: sealing the cartridge of the electronic cigarette in which the negative pressure has been formed in the E-liquid storage tank in the sealing bag in a normal pressure environment, wherein the pressure P2 of the sealed space inside the sealing bag after the sealing bag is sealed is equal to a normal pressure P0, which is the external atmospheric pressure, and wherein P2=P0>P1, thereby forming the negative pressure in the E-liquid storage tank of the cartridge relative to the pressure P2 of the sealed space inside the sealing bag that is external to the E-liquid storage tank of the cartridge.

7. The method for injecting the E-liquid into the cartridge of the electronic cigarette of claim 4, wherein the step b) comprises: injecting the E-liquid that is hot and that has a normal pressure into the E-liquid storage tank, wherein, after the E-liquid cools down, the pressure P1 inside the E-liquid storage tank is lower than the pressure P2 of the sealed space inside the sealing bag that is external to the E-liquid storage tank of the cartridge, and wherein P1 is the negative pressure, and the step c) comprises: sealing, in the sealing bag in a normal pressure environment, the cartridge of the electronic cigarette in which the negative pressure has been formed in the E-liquid storage tank, wherein the pressure P2 of the sealed space inside the sealing bag after the sealing bag is sealed is equal to a normal pressure P0, which is the external atmospheric pressure and wherein P2=P0>P1, thereby forming the negative pressure inside the E-liquid storage tank of the cartridge relative to the pressure P2 of the sealed space inside the sealing bag that is external to the E-liquid storage tank of the cartridge.

8. The method for injecting the E-liquid into the cartridge of the electronic cigarette of claim 1, wherein the pressure inside the E-liquid storage tank after the E-liquid is injected is P1, P1 is a negative pressure lower than a normal pressure, which is an external atmospheric pressure P0, in the step c), the cartridge in which the negative pressure has been formed in the E-liquid storage tank of the cartridge is sealed in the sealing bag that is tightly coupled with the cartridge, and after the sealing bag is sealed, a pressure of an environment external to the tightly coupled sealing bag is P2, which is equal to the normal pressure P0, wherein P2=P0>P1, thereby forming the negative pressure inside the E-liquid storage tank of the cartridge relative to the pressure P2 of the external environment external to the E-liquid storage tank, which is equal to the external atmospheric pressure P0 of an external atmosphere external to the sealing bag that is tightly coupled with the cartridge.

9. The method for injecting the E-liquid into the cartridge of the electronic cigarette of claim 8, wherein in the step c), the sealing bag that is tightly coupled with the cartridge is formed by selecting a sealing bag having a predetermined size, and vacuuming the sealing bag with the cartridge disposed therein such that the sealing bag and the cartridge are tightly closed and sealed.

10. A cartridge of an electronic cigarette, comprising: an E-liquid guiding body; an E-liquid storage tank configured to receive an injection of an E-liquid, wherein the E-liquid guiding body is configured to be in fluidic communication with the E-liquid injected into the E-liquid storage tank, and a sealing bag configured to seal the cartridge inside the sealing bag, wherein, the pressure of the E-liquid in the E-liquid storage tank of the cartridge after the injection of the E-liquid is P1, a pressure of an external environment external to the E-liquid storage tank of the cartridge after the injection of the E-liquid is P2, P2>P1, which indicates that a negative pressure, which is a reverse pressure differential, is formed inside the E-liquid storage tank of the cartridge relative to the pressure of the external environment external to the E-liquid storage tank of the cartridge, wherein an anti-E-liquid-leakage coefficient P1 of the E-liquid guiding body and an anti-air-resistance coefficient P2 of the E-liquid guiding body satisfy P2P1)(P2P1)P1, such that after the cartridge is injected with the E-liquid, the E-liquid guiding body absorbs, to a maximum degree, the E-liquid stored in the E-liquid storage tank, an leakage of the E-liquid in a non-operating state is avoided and a smooth supply of the E-liquid is provided in an operating state.

11. The cartridge of the electronic cigarette of claim 10, further comprising: a base, wherein an air inlet is provided in the base of the cartridge; and an upper portion, wherein an air outlet is provided at the upper portion of the cartridge, and wherein the air inlet and the air outlet are connected by a vapor channel, a liquid inlet is provided in a side wall of the vapor channel, the liquid inlet is connected with the E-liquid storage tank, an atomizing core is provided in the vapor channel, the atomizing core includes an E-liquid guiding body and a heating element, the E-liquid guiding body is configured to absorb the E-liquid stored in the E-liquid storage tank through the liquid inlet, and the heating element is configured to atomize the E-liquid absorbed by the E-liquid guiding body.

12. The cartridge of the electronic cigarette of claim 11, further comprising: a lower plug; and an upper plug, wherein the lower plug is configured to be assembled to the air inlet, and the upper plug is configured to be assembled to the air outlet.

13. The cartridge of the electronic cigarette of claim 12, wherein the cartridge is sealed in a sealing bag having a sealed space, a pressure of the sealed space in the sealing bag is P2, P2>P1, which indicates that the negative pressure, which is the reverse pressure differential, is formed inside the E-liquid storage tank of the cartridge relative to the pressure of the sealed space in the sealing bag that is external to the E-liquid storage tank of the cartridge.

14. The cartridge of the electronic cigarette of claim 12, wherein the cartridge is tightly sealed in a sealing bag, a pressure of an atmosphere external to the sealing bag is P2, which is a normal pressure P0, wherein P2=P0>P1, which indicates that the negative pressure, which is the reverse pressure differential is formed inside the E-liquid storage tank of the cartridge relative to the pressure of the atmosphere external to the sealing bag that is tightly sealed.

15. An electronic cigarette assembly, comprising: at least one cartridge for an electronic cigarette that is sealed in a sealing bag, wherein the cartridge includes an E-liquid guiding body and an E-liquid storage tank configured to receive an injection of an E-liquid, wherein the E-liquid guiding body is configured to be in fluidic communication with the E-liquid injected into the E-liquid storage tank of the cartridge, wherein, a pressure inside the E-liquid storage tank of the cartridge after the E-liquid is injected is P1, a pressure of an external environment external to the E-liquid storage tank of the cartridge after the E-liquid is injected is P2, P2>P1, which indicates that a negative pressure, which is a reverse pressure differential, is formed inside the E-liquid storage tank of the cartridge relative to the pressure of the external environment external to the E-liquid storage tank of the cartridge, and wherein an anti-E-liquid-leakage coefficient P1 of the E-liquid guiding body and an anti-air-resistance coefficient P2 of the E-liquid guiding body satisfy (P2P1)(P2P1)P1, such that after the cartridge is injected with the E-liquid, the E-liquid guiding body absorbs, to a maximum degree, the E-liquid stored in the E-liquid storage tank, an leakage of the E-liquid in a non-operating state is avoided and a smooth supply of the E-liquid is provided in an operating state.

16. The electronic cigarette assembly of claim 15, further comprising: a base, wherein an air inlet is provided in the base of the cartridge; and an upper portion, wherein an air outlet is provided at the upper portion of the cartridge, wherein the air inlet and the air outlet are connected by a vapor channel, a liquid inlet is provided in a side wall of the vapor channel, the liquid inlet is connected with the E-liquid storage tank, an atomizing core is provided in the vapor channel, the atomizing core includes an E-liquid guiding body and a heating element, the E-liquid guiding body is configured to absorb the E-liquid stored in the E-liquid storage tank through the liquid inlet, and the heating element is configured to atomize the E-liquid absorbed by the E-liquid guiding body.

17. The electronic cigarette assembly of claim 16, further comprising: a lower plug; and an upper plug, wherein the lower plug is configured to be assembled to the air inlet, and the upper plug is configured to be assembled to the air outlet.

18. The electronic cigarette assembly of claim 17, wherein the cartridge is sealed in a sealing bag having a sealed space, a pressure of the sealed space in the sealing bag is P2, P2>P1, which indicates that the negative pressure, which is the reverse pressure differential, is formed inside the E-liquid storage tank of the cartridge relative to the pressure of the sealed space in the sealing bag that is external to the E-liquid storage tank of the cartridge.

19. The electronic cigarette assembly of claim 18, wherein the sealing bag has an elastic shrinking capability such that the sealing bag does not undergo a deformation greater than a predetermined deformation level when the external atmospheric pressure drops by 10-20%, and that a pressure P2 in a sealed space inside the sealing bag does not undergo a change greater than a predetermined pressure change level.

20. The electronic cigarette assembly of claim 17, wherein the cartridge is tightly sealed in a sealing bag, a pressure of an atmosphere external to the sealing bag is P2, which is a normal pressure P0, wherein P2=P0>P1, which indicates that the negative pressure, which is the reverse pressure differential is formed inside the E-liquid storage tank of the cartridge relative to the pressure of the atmosphere external to the sealing bag that is tightly sealed.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0048] To better explain the technical solutions of the present disclosure and of the conventional technologies, the accompany drawings that are referred to when describing the present disclosure or the conventional technologies will be briefly introduced. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure. A person having ordinary skills in the art can derive other drawings based on these drawings without creative labor.

[0049] FIG. 1 is a perspective view of an electronic cigarette according to conventional technology;

[0050] FIG. 2 is a cross-sectional view of the electronic cigarette according to the conventional technology;

[0051] FIG. 3 is a cross-sectional view of a cartridge according to an embodiment of the present disclosure;

[0052] FIG. 4 is a schematic illustration of the cartridge and the sealing bag after they are coupled, according to an embodiment of the present disclosure;

[0053] FIG. 5 is a schematic illustration of the cartridge and the sealing bag after they are coupled, according to another embodiment of the present disclosure;

[0054] FIG. 6 is a flow chart illustrating a manufacturing process according to an embodiment of the present disclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0055] The technical solution of the embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The described embodiments are merely some embodiments of the present disclosure, and are not all embodiments of the present disclosure. Based on the embodiments of the present disclosure, a person having ordinary skills in the art can obtain other embodiments without creative labor. Such embodiments all fall within the scope of protection of the present disclosure.

[0056] As shown in FIG. 3-FIG. 6, the embodiments of the present disclosure provide a dual-seal reverse pressure differential cartridge E-liquid injection method, including the following steps: a. selecting an E-liquid guiding body 22 and an empty cartridge 2, and assembling the E-liquid guiding body 22 with the empty cartridge 2. The cartridge 2 may include an E-liquid storage tank 21. The E-liquid guiding body 22 is configured to be in fluidic communication with the E-liquid injected into the E-liquid storage tank 21. The anti-E-liquid-leakage coefficient P1 of the E-liquid guiding body 22 and the anti-air-resistance coefficient P2 may satisfy (P2P1)(P2P1)P1. P1 is the internal pressure in the E-liquid storage tank of the cartridge after the E-liquid is injected. P2 is the external pressure external to the E-liquid storage tank after the E-liquid is injected. That is, after the cartridge is injected with the E-liquid, the E-liquid guiding body 22 can absorb, to the maximum degree, the E-liquid from the E-liquid storage tank 21, while avoiding leakage of the E-liquid and maintaining a smooth supply of the E-liquid in the operating state. b. injecting the E-liquid into the E-liquid storage tank 21. The E-liquid has a pressure P1. c. after the injection of the E-liquid is completed, sealing the cartridge 2 in a sealing bag 3. The E-liquid guiding body 22 may be an E-liquid guiding cotton, which is a medium for guiding the E-liquid.

[0057] The cartridge 2 may include a base 23. An air inlet 231 may be provided in the base 23. An upper portion of the cartridge 2 may be provided with an air outlet 24. The air inlet 231 and the air outlet 24 may be connected through a vapor channel 25. A side wall of the vapor channel 25 may be provided with a liquid inlet. The liquid inlet may be connected with the E-liquid storage tank 21. An atomizing core may be provided in the vapor channel 25. The atomizing core may include the E-liquid guiding body 22 and a heating element 26. The E-liquid guiding body 22 may absorb the E-liquid through the liquid inlet. The heating element 26 may atomize the E-liquid absorbed in the E-liquid guiding body 22.

[0058] After the injection of the E-liquid is completed, a lower plug 27 and an upper plug 28 may be provided to the cartridge. The lower plug 27 may be assembled to (e.g., inserted into) the air inlet 231, and the air inlet 231 may be sealed by the lower plug 27. The upper plug 28 may be assembled to (e.g., inserted into) the air outlet 24. The cartridge 2 can then be sealed in the sealing bag 3. The air outlet 24 may be sealed by the upper plug 28, which may further avoid the leakage of the E-liquid. The lower plug 27 and the upper plug 28 may both have a thread tightening configuration. Alternatively, the lower plug 27 and the upper plug 28 may seal the sealing bag through a tightly matching snap-fit configuration. The sealing of the cartridge through the plugs may be regarded as an embodiment of a first sealing. By the second sealing through the sealing bag, a dual seal may be realized in the present disclosure.

[0059] If there exists a sealing space between the sealed cartridge and the sealing bag, then the pressure P2 of the external environment external to the E-liquid storage tank of the cartridge may be realized in the sealed space inside the sealing bag. The pressure of the sealed space inside the sealing bag, i.e., the pressure P2 of the external environment external to the E-liquid storage tank of the cartridge in the sealing bag, satisfies P2>P1. In other words, a negative pressure is generated in the interior of the E-liquid storage tank of the cartridge relative to the exterior of the E-liquid storage tank of the cartridge, i.e., the sealed space inside the sealing bag.

[0060] When there exists a certain space between the dual-sealed cartridge and the sealing bag, the sealing bag has a limited elastic shrink capability, such that the sealing bag does not undergo a deformation or crack greater than a predetermined deformation or crack level when the atmospheric pressure of the external atmosphere changes. Specifically, for example, when the atmospheric pressure of the external atmosphere reduces, for example, by 10-20%, i.e., when the atmospheric pressure of the external atmosphere reduces to below one atmospheric pressure, the pressure P2 inside the sealing bag is greater than the already reduced atmospheric pressure, the sealing bag does not undergo an expansion or deformation that is greater than the predetermined deformation level. The purpose of not having an expansion or deformation that is greater than the predetermined deformation level is to ensure that the pressure P2 inside the sealing bag does not have changes greater than a predetermined pressure change level, thereby effectively avoiding the escape of the E-liquid stored in the E-liquid storage tank to the sealing bag. Therefore, the elasticity of the material of the sealing bag is limited, to ensure that the sealing bag does not undergo a deformation greater than the predetermined deformation level within a range of pressure changed. In another situation, when the atmospheric pressure of the external atmosphere changes, even if the sealing bag undergoes a slight expansion, such expansion does not affect the normal use. Such expansion is a slight expansion in the appearance, which is not discernable by naked eyes.

[0061] The relative negative pressure environment formed between the interior and exterior of the E-liquid storage tank of the cartridge may be realized based on the following methods according to different pressures under which the E-liquid is injected:

[0062] In a first situation, in step b, the E-liquid having a normal (atmospheric) pressure is injected into the E-liquid storage tank 21. The pressure of the E-liquid is P1. The pressure P1 of the E-liquid injected under the normal pressure in the E-liquid storage tank 21 is the normal pressure, i.e., the external atmospheric pressure P0.

[0063] In step c, the cartridge that has been injected with E-liquid under the normal pressure environment is sealed in a sealing bag having a pressure higher than the normal pressure. The pressure in the sealing bag after the sealing bag is sealed is P2. P2>P1=P0, which is the normal pressure or the external atmospheric pressure.

[0064] The sealing bag having a pressure higher than the normal pressure may be realized by injecting a gas having a pressure higher than the normal pressure into the sealing bag. The gas may be air or an inert gas.

[0065] In a second situation, in step b, the pressure P1 of the E-liquid inside the E-liquid storage tank of the cartridge is made lower than the external air pressure P2 external to the E-liquid storage tank of the cartridge, i.e. P2>P1, such that a relative negative pressure environment is formed in the sealed space of the sealing bag, i.e., between the interior of the E-liquid storage tank of the cartridge after the E-liquid is injected and the external environment external to the E-liquid storage tank of the cartridge.

[0066] The negative pressure environment may be formed through the following methods: [0067] after the E-liquid is injected into the E-liquid storage tank of the cartridge under the normal pressure environment, the E-liquid storage tank of the cartridge may be sucked to form a vacuum. The pressure of the E-liquid inside the E-liquid storage tank after the vacuum is formed is P1, which is lower than the external air pressure P2 of the external environment external to the E-liquid storage tank of the cartridge, i.e., P1 is a negative pressure. [0068] the E-liquid is injected into the E-liquid storage tank in a negative pressure environment. The pressure of the liquid inside the E-liquid storage tank of the cartridge is P1, which is lower than the external air pressure P2 of the external environment external to the E-liquid storage tank of the cartridge, i.e., P1 is a negative pressure. [0069] the E-liquid that has been heated in a normal pressure is injected into the E-liquid storage tank 21. After the E-liquid cools down, the E-liquid has a pressure P1. The pressure P1 of the E-liquid stored in the E-liquid storage tank of the cartridge is lower than the air pressure P2 of the external environment external to the E-liquid storage tank of the cartridge, i.e., P1 is a negative pressure.

[0070] In step c, a relative negative pressure environment may be formed in the E-liquid storage tank of the cartridge based on the pressure generated in step b inside the sealing bag that packages the cartridge: [0071] sealing the cartridge that has been injected with the E-liquid in a normal pressure environment in a sealing bag having a pressure higher than the normal pressure. The pressure generated in the sealing bag after the sealing bag is sealed is P2.

[0072] The pressure higher than the normal pressure in the sealing bag may be generated by injecting a gas having a pressure higher than the normal pressure into the sealing bag. The pressure in the sealing bag after the sealing bag is sealed is P2, P2>P1=P0. The gas may be air or an inert gas. [0073] sealing the cartridge that has been injected with the E-liquid in a negative pressure environment in a sealing bag in a normal pressure environment. The pressure inside the sealing bag after the sealing bag is sealed is P2, which equals to the normal pressure P0, i.e., P2=P0>P1. [0074] sealing, in a sealing bag in a normal pressure, the cartridge that has been injected with hot E-liquid in a normal pressure environment and the hot E-liquid has cooled down. The pressure inside the sealing bag after the sealing bag is sealed is P2, which is equal to the normal pressure P0, i.e., P2=P0>P1.

[0075] When the sealing bag and the cartridge need to couple tightly, in step c, the cartridge in which a negative pressure has formed inside the E-liquid storage tank of the cartridge is sealed in the sealing bag. The tight sealing may be realized by selecting a sealing bag having a suitable size and vacuuming the sealing bag in which the cartridge is placed such that the sealing bag and the cartridge are tightly coupled. The pressure outside of the sealing bag after the sealing bag has been sealed such that the cartridge and the sealing bag are tightly coupled is P2, which is equal to the normal pressure P0, i.e., P2=P0>P1.

[0076] The pressure P1 inside the E-liquid storage tank of the cartridge after the cartridge has been injected with the E-liquid through the above method is lower than the pressure P2 of the external environment external to the E-liquid storage tank, i.e., P2>P1. A relative negative pressure environment is formed between the interior of the E-liquid storage tank of the cartridge after the cartridge is injected with the E-liquid and the exterior of the E-liquid storage tank of the cartridge. In the meantime, the effect of the changes in the atmospheric pressure in the external atmosphere on the pressure inside the E-liquid storage tank of the cartridge can be reduced or even eliminated through isolation from the external atmosphere by the sealing bag. As a result, the leakage of the E-liquid caused by the changes in the atmospheric pressure can be effectively avoided. In the meantime, the following issues can be avoided: the cartridge 2 is manufactured in one place, and used in another place having a lower atmospheric pressure, which can cause the leakage of the E-liquid. Accordingly, contamination of the external environment by the E-liquid can be avoided. Furthermore, the quality of the E-liquid can be enhanced.

[0077] The present disclosure also provides a cartridge 2 of an electronic cigarette into which E-liquid can be injected based on the above-described dual seal reverse pressure differential cartridge E-liquid injection method. The cartridge 2 may include an E-liquid storage tank 21. The E-liquid inside the E-liquid storage tank 21 may have a pressure P1. The pressure P1 may satisfy P2>P1. The pressure P2 is an external pressure of an external environment external to the E-liquid storage tank of the cartridge of the electronic cigarette. The cartridge may be sealed in a sealing bag 3.

[0078] The present disclosure also provides a cartridge of an electronic cigarette into which E-liquid can be injected based on the above-described dual seal reverse pressure differential cartridge E-liquid injection method and an electronic cigarette assembly including the cartridge. The disclosed cartridge and the electronic cigarette assembly can effectively avoid the leakage of the E-liquid that may be caused by the changes in the external air pressure. In the meantime, the following issues can be avoided: the cartridge is manufactured in one place, and used in another place having a lower atmospheric pressure, which can cause the leakage of the E-liquid. As a result, the contamination of the external environment by the E-liquid can be avoided. Furthermore, the quality of the E-liquid can be enhanced.

[0079] The above described are merely some embodiments of the present disclosure, which do not limit the scope of the present disclosure. Any modification, equivalent substitution, or improvement within the spirit and principle of the present disclosure fall within the scope of protection of the present disclosure.