Integrated helium injection valve

Abstract

The utility model discloses an integrated helium injection valve which comprises a valve seat provided with a main channel, a plurality of branch channels and a plurality of valve cavities, the valve cavities are all communicated with the main channel, the branch channels are respectively communicated with the valve cavities, one end of the main channel is connected with a battery shell, and the other end of the main channel is connected with a valve core. The plurality of branch channels are respectively communicated with air channels with different functions; the control module is used for controlling on-off of the branch channels and arranged on the valve seat and comprises a plurality of control valve sets, each control valve set comprises a driving part, a valve rod and a valve element, the valve element is arranged at one end of the valve rod and arranged in the valve cavity, the driving part is used for driving the valve rod to move, and the driving part is used for driving the valve rod to move. And the valve core is driven to be close to or far away from the main channel, so that the branch channel is communicated with or disconnected from the main channel. According to the utility model, the arrangement of pipelines can be simplified, the number of valve seats is reduced, and the equipment cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of helium detection equipment, and particularly relates to an integrated helium injection valve. Background Art

[0002] During the battery production process, in order to improve the safety performance of the battery, it is necessary to perform airtightness detection on the battery. Among them, helium detection equipment is usually used to detect the airtightness of the battery. During helium detection, the battery is respectively evacuated, backfilled with helium, injected with helium, and broken vacuum.

[0003] However, the existing helium detection equipment needs to separately set different pipelines and valve seats to control the gas in each step to achieve the commutation and on-off of different gas paths. As a result, the pipeline layout is complex, the number of valve seats is large, and the equipment cost is high. Content of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides an integrated helium injection valve, which can simplify the pipeline layout, reduce the number of valve seats, and reduce the equipment cost.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] An integrated helium injection valve, comprising: a valve seat provided with a main channel, a plurality of sub-channels and a plurality of valve cavities, wherein the plurality of valve cavities are all communicated with the main channel, the plurality of sub-channels are respectively communicated with the plurality of valve cavities, one end of the main channel is connected to the battery housing, and the plurality of sub-channels are respectively communicated with air channels with different functions; a control module for controlling the on-off of the plurality of sub-channels, which is arranged on the valve seat and comprises a plurality of control valve groups, each control valve group includes a driving member, a valve rod and a valve core, the valve core is arranged at one end of the valve rod, the valve core is arranged in the valve cavity, and the driving member is used to drive the valve rod to move so as to drive the valve core to approach or move away from the main channel, so that the sub-channel is communicated with or disconnected from the main channel.

[0007] As a further improvement of the above technical solution, the valve cavity is a round hole, the valve core is cylindrical, a first through hole is arranged between the main channel and the valve cavity, the first through hole is coaxial with the valve cavity, and the diameter of the first through hole is smaller than the diameter of the valve core.

[0008] As a further improvement of the above technical solution, an end face sealing ring is arranged at one end of the valve core close to the first through hole, and the valve core approaches the main channel to press the end face sealing ring against one end of the valve cavity.

[0009] As a further improvement of the above technical solution, the valve seat includes a valve body and a valve cover. The valve cover is closed on the valve body. A plurality of the driving members are installed on the valve cover. The valve cover is provided with a plurality of second through holes, and a plurality of the valve rods respectively pass through the plurality of second through holes. One ends of a plurality of the valve cavities are all located on one side of the valve body close to the valve cover, and the plurality of second through holes respectively correspond to the plurality of valve cavities.

[0010] As a further improvement of the above technical solution, a plurality of stepped holes are provided between the valve body and the valve cover. The plurality of stepped holes respectively correspond to the plurality of valve cavities, and a sealing centering ring is installed in the stepped holes.

[0011] As a further improvement of the above technical solution, a sealing ring is provided between the second through hole and the valve rod.

[0012] As a further improvement of the above technical solution, a sealing groove is provided on the outer side of the valve rod, and the sealing ring is installed on the sealing groove.

[0013] As a further improvement of the above technical solution, the driving member is a cylinder. The cylinder block of the cylinder is installed on the valve cover, and the telescopic end of the cylinder is connected to one end of the valve rod.

[0014] As a further improvement of the above technical solution, the valve body is of a cuboid structure. The length direction of the main channel extends along the length direction of the valve body. A plurality of the valve cavities and a plurality of the sub-channels are respectively arranged on adjacent sides of the valve body and are arranged in sequence along the length direction of the valve body.

[0015] As a further improvement of the above technical solution, the main channel penetrates through both ends of the valve body, and one end of the main channel is blocked by a plug.

[0016] The beneficial effects of the present utility model are as follows: The present utility model provides an integrated helium injection valve. By integrating a plurality of control valve groups on one valve seat, the layout of the pipeline can be simplified, the number of valve seats can be reduced, and the cost of the equipment can be lowered. Description of the Drawings

[0017] The present utility model will be further described below with reference to the drawings and embodiments.

[0018] Figure 1 is a schematic structural diagram of an integrated helium injection valve according to an embodiment of the present utility model;

[0019] Figure 2 is Figure 1 an exploded view of

[0020] Figure 3 is Figure 1 a sectional view of

[0021] Figure 4 is Figure 1 a sectional view from another angle of;

[0022] Figure 5 is Figure 4 an enlarged view of the part at A in

[0023] Reference numerals: 1 - valve seat, 11 - valve body, 12 - valve cover, 111 - main channel, 112 - branch channels, 113 - valve cavities, 114 - first through - hole, 115 - stepped hole, 116 - sealing centering ring, 117 - plug, 121 - second through - hole;

[0024] 2 - control module, 21 - control valve group, 211 - driving member, 212 - valve rod, 213 - valve core, 2131 - end - face sealing ring, 2121 - sealing ring, 2122 - sealing groove;

[0025] 31 - main gas - path joint, 32 - vacuum - pumping joint, 33 - helium - return joint, 34 - helium - injection joint, 35 - silencer. Detailed implementation manners

[0026] The concept, specific structure and technical effects of the present utility model will be clearly and completely described below in conjunction with embodiments and drawings to fully understand the purpose, features and effects of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, other embodiments obtained by those skilled in the art without creative efforts shall fall within the scope of protection of the present utility model. In addition, all connection / linkage relationships involved in the patent do not simply refer to direct connection of components, but refer to more optimal connection structures that can be formed by adding or reducing connection accessories according to specific implementation situations. Each technical feature in the creation of the present utility model can be combined interactively without mutual contradiction and conflict.

[0027] Referring to Figures 1 to 4 , an integrated helium - injection valve provided by an example of the present utility model includes a valve seat 1 and a control module 2 provided on the valve seat 1.

[0028] Structurally, the valve seat 1 is provided with a main channel 111, a plurality of branch channels 112 and a plurality of valve cavities 113. The plurality of valve cavities 113 are all communicated with the main channel 111, and the plurality of branch channels 112 are respectively communicated with the plurality of valve cavities 113. One end of the main channel 111 is connected to the battery housing, and the plurality of branch channels 112 are respectively communicated with air channels with different functions.

[0029] Further, the control module 2 includes a number of control valve groups 21. Each control valve group 21 includes a driving member 211, a valve stem 212, and a valve core 213. The valve core 213 is disposed at one end of the valve stem 212, and the valve core 213 is disposed within the valve cavity 113. The driving member 211 is used to drive the valve stem 212 to move, so as to drive the valve core 213 to move within the valve cavity 113, making the branch channel 112 communicate with or disconnect from the main channel 111. When it is necessary to ventilate one of the branch channels 112, the corresponding driving member 211 drives the valve core 213 away from the main channel 111, making the corresponding branch channel 112 communicate with the main channel 111, and the other driving members 211 drive the valve core 213 close to the main channel 111, making the other branch channels 112 disconnect from the main channel 111. Thus, the pipeline layout can be simplified, the number of valve seats 1 can be reduced, and the cost of the equipment can be lowered.

[0030] In some preferred embodiments, the valve cavity 113 is a round hole, the valve core 213 is cylindrical, a first through hole 114 is provided between the main channel 111 and the valve cavity 113. The first through hole 114 is coaxial with the valve cavity 113, and the diameter of the first through hole 114 is smaller than the diameter of the valve core 213, so that a support surface is formed at one end of the valve cavity 113 close to the main channel 111. When the valve core 213 approaches the main channel 111, the end face of the valve core 213 abuts against the support surface. Thus, the blocking of the first through hole 114 can be achieved, and further, the branch channel 112 can be separated from the main channel 111.

[0031] It should be noted that the outer circle of the valve core 213 and the inner wall of the valve cavity 113 can be in sliding connection or separated.

[0032] Further, an end face sealing ring 2131 is provided at one end of the valve core 213 close to the first through hole 114. When the valve core 213 approaches the main channel 111, the valve core 213 presses the end face sealing ring 2131 against the support surface. Thus, the sealing performance when the valve core 213 blocks the first through hole 114 can be improved.

[0033] In some preferred embodiments, the valve seat 1 includes a valve body 11 and a valve cover 12. The valve cover 12 covers the valve body 11. A number of driving members 211 are installed on the valve cover 12. The valve cover 12 is provided with a number of second through holes 121. The number of second through holes 121 respectively accommodate a number of valve stems 212 to pass through. One ends of a number of valve cavities 113 are all located on the side of the valve body 11 close to the valve cover 12, and the number of second through holes 121 respectively correspond to the number of valve cavities 113.

[0034] It can be understood that by providing the valve body 11 and the valve cover 12, the valve cover 12 can be opened or covered in the valve body 11. Further, one ends of a number of valve cavities 113 can be opened or closed. Thus, it is convenient for the installation or replacement of the valve core 213.

[0035] For the convenience of assembling the valve cover 12 and the valve body 11, the valve cover 12 and the valve body 11 are connected by bolts, so that the two are firmly locked and not easily loosened.

[0036] Furthermore, a number of stepped holes 115 are provided between the valve body 11 and the valve cover 12. The number of stepped holes 115 corresponds to the number of valve cavities 113 respectively. A sealing centering ring 116 is installed in the stepped hole 115. Thus, the several valve cavities 113 can be separately sealed to prevent the gas in the valve cavity 113 from leaking between the valve body 11 and the valve cover 12. Moreover, it can also center the valve core 213 to improve the concentricity of the valve core 213 and the first through hole 114, ensuring that the valve core 213 can block the first through hole 114.

[0037] Refer to Figure 4 and Figure 5 Furthermore, a sealing ring 2121 is provided between the second through hole 121 and the valve stem 212, which can increase the sealing performance between the valve stem 212 and the second through hole 121, avoiding the gas in the valve cavity 113 from leaking between the valve stem 212 and the second through hole 121.

[0038] Specifically, a sealing groove 2122 is provided on the outer side of the valve stem 212, and the sealing ring 2121 is installed in the sealing groove 2122. Thus, the sealing ring 2121 can be fixed to prevent it from detaching during the movement of the valve stem 212.

[0039] More specifically, the number of both the sealing groove 2122 and the sealing ring 2121 is two, which can further improve the sealing performance between the valve stem 212 and the second through hole 121.

[0040] In some preferred embodiments, the driving member 211 is a cylinder. The cylinder block of the cylinder is installed on the valve cover 12, and the telescopic end of the cylinder is connected to one end of the valve stem 212. The structure of the cylinder is simple and convenient for installation.

[0041] In some preferred embodiments, the valve body 11 is of a cuboid structure. The length direction of the main channel 111 extends along the length direction of the valve body 11. A number of valve cavities 113 and a number of sub-channels 112 are respectively arranged on the adjacent sides of the valve body 11 and are arranged in sequence along the length direction of the valve body 11.

[0042] It can be understood that the structure of the valve body 11 is simple, which is convenient for the processing of the valve body 11. The main channel 111 is of a straight structure. When machining the main channel 111, it can be machined at one time. Thus, the machining difficulty of the main channel 111 is reduced.

[0043] Refer to Figure 3, Further, the main channel 111 runs through both ends of the valve body 11. One end of the main channel 111 is blocked by a plug 117, and the other end of the main channel 111 is connected to a main gas path connector 31. The main gas path connector 31 is connected to the liquid injection hole of the battery through a gas pipe.

[0044] When machining the main channel 111, first run the main channel 111 through both ends of the valve body 11 to facilitate the cleaning of the debris generated during machining and prevent the debris from blocking the main channel 111. Then, block one end of the main channel 111 with a plug 117. When the main channel 111 is blocked, the plug 117 can be unscrewed to facilitate the cleaning of the main channel 111.

[0045] Specifically, the number of sub-channels 112 is four. The four sub-channels 112 are respectively connected to a vacuum pumping connector 32, a helium return connector 33, a helium injection connector 34, and a muffler 35. The four control valve groups 21 respectively control the on / off of the four sub-channels 112. Thus, the battery can be vacuum pumped, helium returned, helium injected, and vacuum broken respectively.

[0046] More specifically, the main gas path connector 31, the vacuum pumping connector 32, the helium return connector 33, the helium injection connector 34, and the muffler 35 all adopt 3 / 8-inch interfaces. Thus, the CV value of the pipeline can be increased and the pressure loss of the gas can be reduced.

[0047] The above is a specific description of the preferred embodiment of the present invention, but the present invention is not limited to the described embodiment. Those skilled in the art can also make various equivalent deformations or substitutions without departing from the spirit of the present invention. These equivalent deformations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. An integrated helium injection valve, characterized in that: include: The valve seat is provided with a main channel, a plurality of branch channels and a plurality of valve cavities, the plurality of valve cavities are all connected to the main channel, the plurality of branch channels are respectively connected to the plurality of valve cavities, one end of the main channel is connected to the battery housing, and the plurality of branch channels are respectively connected to airways with different functions; A control module, used for controlling the on and off of several of the sub-channels, is arranged on the valve seat, and includes several control valve groups, wherein the control valve groups include a driving member, a valve stem and a valve core, wherein the valve core is arranged at one end of the valve stem, and the valve core is arranged in the valve cavity, and the driving member is used for driving the valve stem to move so as to drive the valve core to approach or move away from the main channel, so that the sub-channels are connected or disconnected with the main channel.

2. The integrated helium injection valve according to claim 1, characterized in that: The valve cavity is a circular hole, the valve core is cylindrical, a first through hole is provided between the main channel and the valve cavity, the first through hole is coaxial with the valve cavity, and the diameter of the first through hole is smaller than the diameter of the valve core.

3. The integrated helium injection valve according to claim 2, characterized in that: An end face sealing ring is arranged at one end of the valve core close to the first through hole, and the valve core is close to the main passage to press the end face sealing ring tightly against one end of the valve cavity.

4. The integrated helium injection valve according to claim 1, characterized in that: The valve seat includes a valve body and a valve cover, the valve cover is covered with the valve body, a plurality of driving members are installed on the valve cover, the valve cover is provided with a plurality of second through holes, a plurality of the second through holes respectively accommodate a plurality of the valve stems to pass through, one end of a plurality of the valve cavities are all located on a side of the valve body close to the valve cover, and a plurality of the second through holes respectively correspond to a plurality of the valve cavities.

5. The integrated helium injection valve according to claim 4, characterized in that: A plurality of stepped holes are arranged between the valve body and the valve cover, the plurality of stepped holes respectively correspond to the plurality of valve cavities, and a sealing centering ring is installed in the stepped holes.

6. The integrated helium injection valve according to claim 4, characterized in that: A sealing ring is arranged between the second through hole and the valve stem.

7. The integrated helium injection valve according to claim 6, characterized in that: A sealing groove is arranged on the outer side of the valve stem, and the sealing ring is installed on the sealing groove.

8. The integrated helium injection valve according to claim 4, characterized in that: The driving member is a cylinder, a cylinder body of the cylinder is mounted on the valve cover, and a telescopic end of the cylinder is connected to one end of the valve stem.

9. The integrated helium injection valve according to claim 4, characterized in that: The valve body is a rectangular parallelepiped structure, the length direction of the main channel extends along the length direction of the valve body, and the plurality of valve chambers and the plurality of branch channels are respectively arranged on adjacent sides of the valve body and arranged in sequence along the length direction of the valve body.

10. The integrated helium injection valve according to claim 9, characterized in that: The main channel runs through both ends of the valve body, and one end of the main channel is blocked by a screw plug.

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