Battery liquid injection nozzle

Abstract

The utility model discloses a battery liquid injection nozzle which comprises a shell, a first non-return piece and a second non-return piece, the shell is provided with a first sub-accommodating cavity, a second sub-accommodating cavity, a first connecting port communicated with the first sub-accommodating cavity and a second connecting port communicated with the second sub-accommodating cavity; the first connecting port can be connected with a liquid injection hole of a battery, and the second connecting port can be communicated with an external pipeline; the first non-return piece is located in the second sub-containing cavity. The second non-return piece is located in the first sub-containing cavity, and one of the first non-return piece and the second non-return piece comprises a communicating opening; at least one of the second non-return piece and the first non-return piece can move in the axial direction so as to control the communicating opening to be opened or closed. Therefore, the first connecting port is communicated with the second connecting port by opening the communicating port of the battery liquid injection nozzle, and electrolyte can be injected into the battery cell; the non-return piece for controlling opening and closing of the liquid injection nozzle is located inside and does not make contact with the outside in the on-off state, and therefore the pipeline can be effectively prevented from making contact with air.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, concretely relates to a battery liquid injection nozzle. BACKGROUND

[0002] In the new energy lithium electricity industry, the liquid injection and negative pressure formation of the battery cell need to use the suction nozzle, when the battery cell does negative pressure formation, the suction nozzle and the liquid injection hole are disconnected, which can cause the liquid to flow to the surface of the battery cell top cover and the bottom of the storage location, which can cause the inside of the storage location to be full of crystalline liquid, and the suction nozzle crystallization can not be conducted. When the battery cell is injected, the suction nozzle and the liquid injection hole are disconnected, which can cause the liquid to flow, and the electrolyte cannot be in contact with air during the injection. However, under normal circumstances, the suction nozzle is in a normally open state, which can cause air to enter the pipeline, resulting in contact between the electrolyte and air.

[0003] Therefore, how to solve the problem of air entering the pipeline and liquid dripping from the suction nozzle head when the suction nozzle and the liquid injection hole are disconnected is a technical problem that needs to be solved by the technical personnel in the field. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims at providing a battery liquid injection nozzle, which can solve the problem of air entering the pipeline and liquid dripping from the suction nozzle head when the suction nozzle and the liquid injection hole are disconnected.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A battery liquid injection nozzle comprises:

[0007] A shell is provided with a first sub-containing cavity and a second sub-containing cavity, a first connecting port communicating with the first sub-containing cavity, and a second connecting port communicating with the second sub-containing cavity; the first connecting port can be connected with the liquid injection hole of the battery, and the second connecting port can be communicated with the external pipeline;

[0008] A first non-return element is located in the second sub-containing cavity;

[0009] A second non-return element is located in the first sub-containing cavity, and one of the first non-return element and the second non-return element comprises a communicating port;

[0010] At least one of the second non-return element and the first non-return element can move axially to control the opening or closure of the communicating port.

[0011] Optionally, in the above-mentioned battery liquid injection nozzle, the shell comprises a first part and a second part;

[0012] The first part comprises the first connecting port and the first sub-containing cavity;

[0013] The second part comprises the second connecting port and the second sub-receiving cavity;

[0014] The first part and the second part are in sliding fit in the axial direction to allow the second non-return element and the first non-return element to move relatively along the axial direction.

[0015] Optionally, the battery liquid injection nozzle further comprises a separation-preventing structure;

[0016] When the first non-return element and the second non-return element are relatively far away to a preset distance, the communication port is in a closed state, and the first part and the second part are connected through the separation-preventing structure.

[0017] Optionally, the battery liquid injection nozzle comprises a connecting ring in the separation-preventing structure;

[0018] The side wall of the connecting ring is provided with a strip-shaped through hole, and the length direction of the strip-shaped through hole is parallel to the axial direction of the connecting ring;

[0019] One of the first part and the second part is sleeved inside one end of the connecting ring and fixedly connected with the connecting ring, and the other is provided with a protruding block inserted into the strip-shaped through hole and slidably connected with the connecting ring.

[0020] Optionally, the battery liquid injection nozzle comprises a first connecting device arranged on the end of the first part close to the second part;

[0021] The second part is provided with a second connecting device close to the end of the first part; and the first connecting device and the second connecting device are movably connected to control the opening or closing of the communication port.

[0022] Optionally, the battery liquid injection nozzle comprises a first connecting device arranged on the end surface of the first part close to the second part in the form of a local annular recess;

[0023] The second connecting device is arranged on the end surface of the second part close to the first part in the form of a local annular protrusion, and the annular recess and the annular protrusion are inserted into each other.

[0024] Optionally, the battery liquid injection nozzle further comprises an elastic member connected to at least one of the end portions of the first part and the second part along the axial direction to provide elastic force for the mutual separation of the first non-return element and the second non-return element.

[0025] Optionally, the battery liquid injection nozzle comprises a plurality of elastic sheets arranged in sequence along the circumferential direction, and when the communication port is closed, the joint seams between adjacent elastic sheets are sealed; and when the communication port is opened, the elastic sheets are deformed, and the joint seams are opened.

[0026] The other of the first anti-return component and the second anti-return component includes an opener capable of pushing the elastic sheet to deform so as to open the splicing seam.

[0027] Optionally, in the above-mentioned battery filling nozzle, the opening device includes a column, with a puncture portion and a root portion at both ends of the column, the puncture portion is capable of pushing the spring sheet to deform so as to open the joint; the root portion is farther away from the communication port than the puncture portion and is fixedly connected to the housing;

[0028] The column is provided with a plurality of axial through slots, and the axial through slots can connect the first sub-accommodating cavity and the second sub-accommodating cavity when the communication port is opened.

[0029] Optionally, in the above-mentioned battery liquid filling nozzle, the opener further includes a first sleeve, which is sleeved outside the column and fixedly connected to the shell;

[0030] A second sleeve is provided outside the communicating port, and the second sleeve can be plugged into the first sleeve when the communicating port is opened.

[0031] It can be seen from the above technical solution that the shell of the utility model is provided with a first sub-accommodation chamber and a first connection port, a second sub-accommodation chamber and a second connection port. The first non-return member is located in the second sub-accommodation chamber, the second non-return member is located in the first sub-accommodation chamber, the first connection port can be connected to the injection hole of the battery, and the second connection port can be connected to the external pipeline. One of the two non-return members is a connecting port. The opening of the connecting port can connect the first connection port with the second connection port, so as to realize the operation of injecting electrolyte into the battery cell; the closing of the connecting port can disconnect the first connection port from the second connection port, so as to prevent dripping at the position of the first connection port, thereby preventing the liquid from crystallizing after dripping at the position of the first connection port; and because the non-return member that controls the opening and closing of the battery filling nozzle is located inside the battery filling nozzle, it is not in contact with the outside world in both the on and off states, thereby effectively preventing the pipeline from contacting the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 Schematic diagram of the structure of the battery filling nozzle provided in the embodiment of the utility model Figure 1 ;

[0034] Figure 2Schematic diagram of the structure of the battery filling nozzle provided in the embodiment of the utility model Figure 2 ;

[0035] Figure 3 Schematic diagram of the structure of the battery filling nozzle provided in the embodiment of the utility model Figure 3 ;

[0036] Figure 4 A schematic structural diagram of the second part provided in an embodiment of the present utility model;

[0037] Figure 5 This is a structural diagram of the first part provided in an embodiment of the utility model.

[0038] in:

[0039] 11. First portion; 111. First connection port; 112. Annular groove;

[0040] 12. Second portion; 121. Second connection port; 122. Annular protrusion;

[0041] 2. First anti-return member; 21. Cylinder; 22. First sleeve; 3. Second anti-return member;

[0042] 4. Connecting ring; 41. Strip-shaped through hole; 42. Bump; 5. Elastic member; 6. Shrapnel. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] In the description of the utility model, it should be noted that the terms "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or locations, are based on the positions or locations shown in the accompanying drawings, or are the positions or locations in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of the utility model and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] like Figures 1 to 5The battery liquid injection nozzle shown in the embodiment of the utility model can solve the problem of air entering the pipeline and the liquid dripping from the suction nozzle head when the suction nozzle and the liquid injection hole are disconnected.

[0046] Firstly, the battery liquid injection nozzle comprises a shell, a first check member 2 and a second check member 3; wherein the shell is provided with a first sub-containing cavity and a second sub-containing cavity, a first connecting port 111 communicating with the first sub-containing cavity and a second connecting port 121 communicating with the second sub-containing cavity; the first connecting port 111 can be connected with the liquid injection hole of the battery, and the second connecting port 121 can be communicated with the external pipeline; the first check member 2 is located in the second sub-containing cavity; the second check member 3 is located in the first sub-containing cavity, one of the first check member 2 and the second check member 3 comprises a communicating port; at least one of the second check member 3 and the first check member 2 is axially movable to control the opening or closure of the communicating port. Exemplarily, the first check member 2 comprises the communicating port, the first check member 2 is axially movable, the second check member 3 is not axially movable, the first check member 2 is in contact with or disconnected from the second check member 3 to realize the opening or closure of the communicating port by axial movement; or, the first check member 2 comprises the communicating port, the first check member 2 is not axially movable, the second check member 3 is axially movable, the second check member 3 is in contact with or disconnected from the first check member 2 to realize the opening or closure of the communicating port by axial movement; or, the first check member 2 comprises the communicating port, the first check member 2 is axially movable, the second check member 3 is also axially movable, the two are in contact or disconnected with each other by axial movement to realize the opening or closure of the communicating port; or, the second check member 3 comprises the communicating port, the first check member 2 is axially movable, the second check member 3 is not axially movable, the first check member 2 is in contact with or disconnected from the second check member 3 to realize the opening or closure of the communicating port by axial movement; or, the second check member 3 comprises the communicating port, the first check member 2 is not axially movable, the second check member 3 is axially movable, the second check member 3 is in contact with or disconnected from the first check member 2 to realize the opening or closure of the communicating port by axial movement; or, the second check member 3 comprises the communicating port, the first check member 2 is axially movable, the second check member 3 is also axially movable, the two are in contact or disconnected with each other by axial movement to realize the opening or closure of the communicating port.

[0047] It can be seen that the shell of the battery liquid injection nozzle provided in the embodiments of the utility model is provided with a first sub-containing cavity and a first connecting port 111, a second sub-containing cavity and a second connecting port 121. The first reverse-stopping piece 2 is located in the second sub-containing cavity, the second reverse-stopping piece 3 is located in the first sub-containing cavity, the first connecting port 111 can be connected with the liquid injection hole of the battery, the second connecting port 121 can be communicated with the external pipeline, one of the two reverse-stopping pieces is a communication port, the opening of the communication port can make the first connecting port 111 and the second connecting port 121 communicate, and the work of injecting electrolyte into the battery cell can be realized; the closure of the communication port can make the first connecting port 111 and the second connecting port 121 disconnected, and the liquid drop at the position of the first connecting port 111 can be prevented, so that the liquid drop at the position of the first connecting port 111 can be prevented from forming crystals; and since the reverse-stopping piece for controlling the opening and closure of the battery liquid injection nozzle is located in the battery liquid injection nozzle, the two are not in contact with the outside in the on-off state, so that the contact of the pipeline with the air can be effectively prevented.

[0048] In specific implementation, the shell comprises a first part 11 and a second part 12; the first part 11 comprises a first connecting port 111 and a first sub-containing cavity; the second part 12 comprises a second connecting port 121 and a second sub-containing cavity; the first part 11 and the second part 12 are in sliding fit in the axial direction, so that the second reverse-stopping piece 3 and the first reverse-stopping piece 2 move relatively in the axial direction. It should be noted that as long as the sliding of the first part 11 and the second part 12 in the axial direction can realize the contact and disconnection of the first reverse-stopping piece 2 and the second reverse-stopping piece 3, whether only one of the first part 11 and the second part 12 can move in the axial direction or both of them can move in the axial direction, a person skilled in the art can make specific design according to actual needs.

[0049] In specific implementation, the shell comprises a first part 11 and a second part 12; the first part 11 comprises a first connecting port 111 and a first sub-containing cavity; the second part 12 comprises a second connecting port 121 and a second sub-containing cavity; the first part 11 and the second part 12 are in sliding fit in the axial direction, so that the second reverse-stopping piece 3 and the first reverse-stopping piece 2 move relatively in the axial direction. It should be noted that as long as the sliding of the first part 11 and the second part 12 in the axial direction can realize the contact and disconnection of the first reverse-stopping piece 2 and the second reverse-stopping piece 3, whether only one of the first part 11 and the second part 12 can move in the axial direction or both of them can move in the axial direction, a person skilled in the art can make specific design according to actual needs.

[0050] In specific implementation, the shell comprises a first part 11 and a second part 12; the first part 11 comprises a first connecting port 111 and a first sub-containing cavity; the second part 12 comprises a second connecting port 121 and a second sub-containing cavity; the first part 11 and the second part 12 are in sliding fit in the axial direction, so that the second reverse-stopping piece 3 and the first reverse-stopping piece 2 move relatively in the axial direction. It should be noted that as long as the sliding of the first part 11 and the second part 12 in the axial direction can realize the contact and disconnection of the first reverse-stopping piece 2 and the second reverse-stopping piece 3, whether only one of the first part 11 and the second part 12 can move in the axial direction or both of them can move in the axial direction, a person skilled in the art can make specific design according to actual needs. Figure 2The second portion 12 is sleeved inside one end of the connecting ring 4 and fixedly connected to the connecting ring 4. The first portion 11 is provided with a protrusion 42 that extends into the strip-shaped through hole 41 and is slidably connected to the connecting ring 4. It should be noted that the anti-separation structure includes but is not limited to the connecting ring 4. The specific structure of the anti-separation structure can be specifically designed by those skilled in the art according to actual needs.

[0051] In specific implementation, a first connecting device is provided at the end of the first portion 11 near the second portion 12; a second connecting device is provided at the end of the second portion 12 near the first portion 11. The first and second connecting devices are movably connected to control the opening and closing of the communication port. It should be noted that the primary function of the first and second connecting devices is to ensure a tight seal at the connection between the first and second portions 11, 12 during the opening and closing of the communication port, preventing the electrolyte from coming into contact with the outside air.

[0052] For specific implementation, see Figure 5 The first connecting device is a partially concave end surface of the first portion 11 close to the second portion 12 to form an annular groove 112; see Figure 4 The second connecting device is a partially protruding annular protrusion 122 formed on the end surface of the second part 12 close to the first part 11, and the annular groove 112 and the annular protrusion 122 are plugged into each other, ensuring that when the battery cell is pressed together, the first part 11 can be perfectly connected with the second part 12. It should be noted that the first connecting device can also be a partially protruding annular protrusion 122 formed on the end surface of the first part 11 close to the second part 12; the second connecting device is a partially concave annular groove 112 formed on the end surface of the second part 12 close to the first part 11, and the annular groove 112 and the annular protrusion 122 are plugged into each other. The number of annular grooves and annular protrusions 122 and the specific structure of the first connecting device and the second connecting device can be specifically designed by those skilled in the art according to actual needs.

[0053] In specific implementation, the elastic member 5 is connected to at least one of the axial end of the first part 11 and the axial end of the second part 12 to provide elastic force for the first check member 2 and the second check member 3 to move away from each other, and the elastic member 5 enables the first part 11 and the second part 12 to be pressed together when the battery cell is extruded. For example, the elastic member 5 is connected to the axial end of the first part 11 and the axial end of the second part 12; or the elastic member 5 is connected to the axial end of the first part 11 and not connected to the axial end of the second part 12; or the elastic member 5 is not connected to the axial end of the first part 11 and connected to the axial end of the second part 12. It is to be noted that the nozzle is in contact with the electrolyte injection hole, the first part 11 is connected to the second part 12 through the elastic member 5 and the connecting ring 4 to enable the communication port to be opened, at which time the electrolyte can be injected through the nozzle, and at this time the elastic member 5 is compressed; when the injection is completed, the battery cell is disconnected, at which time the elastic member 5 releases the compression amount, the elastic member 5 returns to the original state, and the first part 11 and the second part 12 move in the direction away from each other in the axial direction to a preset distance, at which time the communication port is disconnected. It is to be noted that the preset distance is controlled by the compression amount of the elastic member 5. In addition, the elastic member 5 includes but is not limited to a coil spring, a leaf spring, a disc spring, and a torsion spring, and the specific structure type of the elastic member 5 can be designed according to actual needs by those skilled in the art.

[0054] In specific implementation, the communication port includes a plurality of elastic pieces 6 arranged in sequence in the circumferential direction, the joint seams between adjacent elastic pieces 6 are sealed when the communication port is closed, and the elastic pieces 6 are deformed and the joint seams are opened when the communication port is opened; the other of the first check member 2 and the second check member 3 includes an opener capable of deforming the elastic pieces 6 to open the joint seams. For example, when the communication port of the first check member 2 includes a plurality of elastic pieces 6 arranged in sequence in the circumferential direction, the second check member 3 includes an opener capable of deforming the elastic pieces 6 to open the joint seams; or when the communication port of the second check member 3 includes a plurality of elastic pieces 6 arranged in sequence in the circumferential direction, the first check member 2 includes an opener capable of deforming the elastic pieces 6 to open the joint seams. It is to be noted that the communication port is not limited to a plurality of elastic pieces 6 arranged in sequence in the circumferential direction, and the communication port is made of flexible and sealable material, which can be spread apart when the opener is inserted, and liquid can flow through it. The specific structure of the communication port can be designed according to actual needs by those skilled in the art.

[0055] In specific implementation, the opening device includes a column 21, the column 21 has a piercing part and a root part at two ends respectively, the piercing part can push the spring 6 to deform to open the splicing joint; the root part is away from the communication port relative to the piercing part and is fixedly connected with the shell; the column 21 is provided with a plurality of axial through grooves, the axial through grooves can communicate the first sub-containment cavity and the second sub-containment cavity when the communication port is opened. It should be noted that the opening device can also be a rhombic shunt structure, which can open the communication port when the battery cell is pressed, thereby performing liquid injection. However, the specific structure of the opening device is not limited thereto, and the person skilled in the art can design it according to actual needs.

[0056] In specific implementation, the opening device further includes a first sleeve 22, the first sleeve 22 is sleeved outside the column 21 and is fixedly connected with the shell; a second sleeve is arranged outside the communication port, and the second sleeve can be inserted with the first sleeve 22 when the communication port is opened. In this way, the sealing property during liquid injection is ensured, and liquid leakage is prevented.

[0057] In specific implementation, the battery cell is lifted after arrival, the first part 11 and the second part 12 are compressed through the connecting ring 4 and the probe, thereby the opening device is inserted and matched with the communication port, the communication port is opened to enable normal flow of liquid, and when the battery cell is disconnected, the spring returns to the original state, at this time, the first part 11 and the second part 12 are disconnected, the communication port is closed, thereby ensuring that liquid will not drip, and the sealing property of the suction nozzle is ensured when being pressed and inserted.

[0058] Finally, it should be noted that in this document, the relationship terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0059] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between various embodiments can be referred to each other.

[0060] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A battery filling nozzle, characterized in that: include: A shell, the shell being provided with a first sub-accommodating cavity and a second sub-accommodating cavity, and a first connecting port (111) communicating with the first sub-accommodating cavity and a second connecting port (121) communicating with the second sub-accommodating cavity; the first connecting port (111) being connectable to a liquid injection hole of a battery, and the second connecting port (121) being connectable to an external pipeline; A first anti-return member (2) is located in the second sub-accommodation chamber; A second anti-return member (3) is located in the first sub-accommodation cavity, and one of the first anti-return member (2) and the second anti-return member (3) includes a communication port; At least one of the second anti-return member (3) and the first anti-return member (2) can move in the axial direction to control the opening or closing of the communication port.

2. The battery filling nozzle according to claim 1, characterized in that The housing comprises a first portion (11) and a second portion (12); The first part (11) includes the first connecting port (111) and the first sub-accommodating cavity; The second portion (12) includes the second connecting port (121) and the second sub-accommodating cavity; The first part (11) and the second part (12) are slidably matched in the axial direction, so that the second anti-return member (3) and the first anti-return member (2) move relative to each other along the axial direction.

3. The battery filling nozzle according to claim 2, characterized in that: It also includes anti-separation structural parts; When the first anti-return member (2) and the second anti-return member (3) are relatively separated to a preset distance, the communication port is in a closed state, and the first part (11) and the second part (12) are connected via the anti-separation structural member.

4. The battery liquid filling nozzle according to claim 3, characterized in that: The anti-separation structural member includes a connecting ring (4); The side wall of the connecting ring (4) is provided with a strip-shaped through hole (41), and the length direction of the strip-shaped through hole (41) is parallel to the axial direction of the connecting ring (4); One of the first part (11) and the second part (12) is sleeved inside one end of the connecting ring (4) and fixedly connected to the connecting ring (4), and the other is provided with a protrusion (42) extending into the strip-shaped through hole (41) and is slidably connected to the connecting ring (4).

5. The battery filling nozzle according to claim 2, characterized in that: A first connecting device is provided at an end of the first portion (11) close to the second portion (12); The second part (12) is provided with a second connecting device at an end portion close to the first part (11); the first connecting device and the second connecting device are movably connected to control the opening or closing of the communication port.

6. The battery filling nozzle according to claim 5, characterized in that: The first connecting device is a partially concave annular groove (112) formed on the end surface of the first part (11) close to the second part (12); The second connecting device is an annular protrusion (122) formed by partially protruding the end surface of the second part (12) close to the first part (11), and the annular groove (112) and the annular protrusion (122) are plugged into each other.

7. The battery filling nozzle according to claim 2, characterized in that: The invention also includes an elastic member (5), wherein the elastic member (5) connects at least one of the first portion (11) and the second portion (12) along the axial end, and provides an elastic force for the first anti-return member (2) and the second anti-return member (3) to move away from each other.

8. The battery filling nozzle according to claim 1, characterized in that: The communication port comprises a plurality of spring pieces (6) sequentially arranged along the circumferential direction; when the communication port is closed, the joints between adjacent spring pieces (6) are sealed; when the communication port is opened, the spring pieces (6) are deformed and the joints are opened; The other of the first anti-return member (2) and the second anti-return member (3) comprises an opener capable of pushing the elastic sheet (6) to deform so as to open the joint seam.

9. The battery filling nozzle according to claim 8, characterized in that: The opener comprises a column (21), the two ends of the column (21) are respectively a puncture portion and a root portion, the puncture portion can push the spring sheet (6) to deform so as to open the joint; the root portion is away from the communication port relative to the puncture portion and is fixedly connected to the housing; The column (21) is provided with a plurality of axial through slots, and the axial through slots are capable of communicating with the first sub-accommodating chamber and the second sub-accommodating chamber when the communication port is opened.

10. The battery filling nozzle according to claim 9, characterized in that: The opener further comprises a first sleeve (22), which is sleeved outside the column (21) and fixedly connected to the housing; A second sleeve is provided outside the communication port, and the second sleeve can be plugged into the first sleeve (22) when the communication port is opened.

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