Air tightness detection device and battery production system

Abstract

The embodiment of the utility model provides an air tightness detection device and a battery production system, and relates to the technical field of batteries. The air tightness detection device comprises a detection box body, a first installation piece, a position adjusting assembly and a plugging piece, the detection box body comprises a first box wall, and the first box wall comprises a first surface and a second surface which are opposite, and an insertion hole penetrating through the first surface and the second surface; the first mounting piece is positioned outside the detection box body and is connected to the first surface; the position adjusting assembly is connected to the first mounting piece; and the plugging piece is connected with the position adjusting assembly. The first mounting part, the position adjusting assembly and the plugging part are arranged outside the detection box body, and the plugging part is driven by the position adjusting assembly to perform plugging action, so that compared with a mode of arranging the plugging part in the detection box body, the position of the plugging part is more easily observed and adjusted; the air tightness detection efficiency of the battery box body can be improved to a certain extent.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and more specifically, to an airtightness detection device and a battery production system. Background Art

[0002] Batteries are widely used in electronic devices, such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric boats, electric toy cars, electric toy boats, electric toy airplanes and power tools, etc.

[0003] During the battery production process, an airtightness detection device is required to perform airtightness detection on the battery box. The airtightness detection device includes a vacuum box and a sealing member for sealing the battery pores in the vacuum box. The sealing member is located inside the box, making it inconvenient to debug and observe. Utility Model Content

[0004] The present application provides an air tightness detection device, which can facilitate the observation and debugging of sealing parts.

[0005] In the first aspect, the embodiment of the present application provides an airtightness detection device, including a detection box, a first mounting member, a positioning assembly and a plugging member, wherein the detection box includes a first box wall, the first box wall includes a first surface and a second surface, and a plug hole penetrating the first box wall; the first mounting member is mounted on the first box wall and is located outside the detection box; the positioning assembly is connected to the first mounting member; the plugging member is connected to the positioning assembly, and the plugging member can be inserted into or out of the plug hole along a first direction driven by the positioning assembly, and the first direction is the arrangement direction of the first surface and the second surface. The present application arranges the first mounting member, the positioning assembly and the plugging member outside the detection box, and drives the plugging member to perform a plugging action through the positioning assembly. Compared with the method of arranging the plugging member inside the detection box, it is easier to observe and adjust the position of the plugging member, and the efficiency of the airtightness detection of the battery box can be improved to a certain extent.

[0006] In some embodiments of the present application, the airtightness detection device further includes a second mounting member, the second mounting member is connected to the position adjustment assembly, and the blocking member is connected to the second mounting member in a manner that it can slide along a second direction, and the second direction intersects the first direction. The blocking member of the present application is positionally adjustable in the first direction and the second direction, which further facilitates the position adjustment of the blocking member.

[0007] In some embodiments of the present application, the airtightness detection device further comprises a first sliding member, the first sliding member is connected to the second mounting member in a manner that it can slide along the second direction, and the blocking member is connected to the first sliding member. The present application drives the blocking member to move along the second direction by sliding the first sliding member on the second mounting member, and the structure is simple and easy to implement.

[0008] In some embodiments of the present application, a first slide rail is connected to a side of the second mounting member facing the first surface, the first slide rail extends along the second direction, and the first sliding member is slidably connected to the first slide rail. The present application realizes the sliding of the first sliding member by arranging the first slide rail on the second mounting member, which has a simple structure and is easy to implement.

[0009] In some embodiments of the present application, the airtightness detection device further includes a first reset component, the first reset component is mounted on the second mounting member and connected to the first sliding member, the first sliding member can slide between a first initial position of the first slide rail and two first two side positions located on both sides of the first initial position under the action of an external force, and the first reset component is configured to drive the first sliding member to reset to the first initial position. By configuring the first reset component, the present application can use the first reset component to reset the blocking member in the second direction after the first sliding member and the blocking member move along the second direction, so as to facilitate subsequent detection of the remaining batteries.

[0010] In some embodiments of the present application, the first reset assembly includes two first connecting arms and two first reset mechanisms, the two first connecting arms are arranged at intervals on the second mounting member along the second direction, the two first reset mechanisms are connected to the two first connecting arms one by one, and are in the first initial position, the first sliding member is located between the two first reset mechanisms, and when the first sliding member slides from the first initial position to the first two side positions, one of the first reset mechanisms is compressed, and when the external force on the first sliding member is released, the compressed first reset mechanism drives the first sliding member to reset to the first initial position. The present application can reset the first sliding member and the blocking member in two directional components of the second direction by using two first reset mechanisms, and at the same time, when the first sliding member slides, the reaction force provided by the first reset mechanism can improve the stability of the first sliding member during the sliding process.

[0011] In some embodiments of the present application, the first reset assembly further includes a first clamping drive mechanism, the first clamping drive mechanism is connected to the second mounting member, the first clamping drive mechanism is respectively connected to the two first connecting arms, and is configured to drive the two first connecting arms to move closer to or farther from each other along the second direction. By configuring the first clamping drive mechanism, the present application can conveniently adjust the positions of the two first connecting arms to ensure that the first sliding member can abut between the two first reset mechanisms.

[0012] In some embodiments of the present application, the airtightness detection device further includes a second sliding member, the second sliding member is connected to the first sliding member in a manner that it can slide along a third direction, and the blocking member is connected to the second sliding member, and the third direction intersects with the first direction and the second direction respectively. In the present application, the second sliding member can drive the blocking member to move along the third direction by sliding the second sliding member on the first sliding member, so that the position of the blocking member in the first direction, the second direction and the third direction is adjustable, further facilitating the position adjustment of the blocking member.

[0013] In some embodiments of the present application, a second slide rail is connected to the side of the first sliding member facing the first surface, the second slide rail extends along the third direction, and the second sliding member is slidably connected to the second slide rail. The present application realizes the sliding of the second sliding member by setting the second slide rail on the first sliding member, and the structure is simple and easy to implement. The present application configures a second reset component, and after the second sliding member and the blocking member move along the third direction, the second reset component can be used to reset the blocking member in the third direction, so as to facilitate the subsequent detection of the remaining batteries.

[0014] In some embodiments of the present application, the airtightness detection device further includes a second reset component, the second reset component is mounted on the second mounting member and connected to the second sliding member, the second sliding member can slide between the second initial position of the second slide rail and two second two side positions located on both sides of the second initial position under the action of an external force, and the second reset component is configured to drive the second sliding member to reset. By configuring the second reset component, the present application can use the second reset component to reset the blocking member in the third direction after the second sliding member and the blocking member move along the third direction, so as to facilitate the subsequent detection of the remaining batteries.

[0015] In some embodiments of the present application, the second reset assembly includes two second connecting arms and two second reset mechanisms, the two second connecting arms are arranged at intervals on the second mounting member along the third direction, the two second reset mechanisms are connected to the two second connecting arms one by one and are in the second initial position, the second sliding member is located between the two second reset mechanisms, when the second sliding member slides from the second initial position to one of the second two side positions, one of the second reset mechanisms is compressed, and when the external force of the second sliding member is released, the compressed second reset mechanism drives the second sliding member to reset to the second initial position. The present application can reset the second sliding member and the blocking member in two directional components of the third direction by using two second reset mechanisms, and at the same time, when the second sliding member slides, the reaction force provided by the second reset mechanism can improve the stability of the second sliding member during the sliding process.

[0016] In some embodiments of the present application, the second reset assembly further includes a second clamping drive mechanism, which is respectively connected to the two second connecting arms and configured to drive the two second connecting arms to move closer to or farther from each other along the third direction. By configuring the second clamping drive mechanism, the present application can conveniently adjust the positions of the two second connecting arms so that the second sliding member can abut between the two second reset mechanisms.

[0017] In some embodiments of the present application, the blocking member includes a body and a limiting flange, the limiting flange is connected to one end of the body away from the first surface, the limiting flange is used to limit the first surface around the plug hole, and the side of the limiting flange facing the first surface is provided with a sealing structure that is sealed with the first surface. By configuring the limiting flange and the sealing structure, the present application can improve the sealing performance of the plug hole after the blocking member is inserted into the plug hole, thereby improving the accuracy of subsequent detection.

[0018] In some embodiments of the present application, the sealing structure includes a first sealing member and a second sealing member, wherein the first sealing member is arranged around the body, the second sealing member is arranged around the first sealing member, and the first sealing member is located between the body and the second sealing member. The present application performs double sealing on the limiting flange and the first surface through the first sealing member and the second sealing member, thereby improving the sealing effect of the jack.

[0019] In some embodiments of the present application, the airtightness detection device further includes an elastic buffer mechanism, which is connected between the positioning assembly and the blocking member and is configured to be elastically deformed along the first direction under the action of an external force. The present application configures the elastic buffer mechanism, so that when the blocking member is subjected to pressure from the detection box or the battery, the elastic buffer mechanism plays a buffering role, thereby reducing the possibility of damage to the blocking member.

[0020] In some embodiments of the present application, the elastic buffer mechanism includes a first elastic member extending along the first direction, and the first elastic member is connected to the adjustment assembly and the blocking member respectively. The present application buffers the blocking member by elastic deformation of the first elastic member in the first direction, which has a simple structure and low cost.

[0021] In some embodiments of the present application, the elastic buffer mechanism further includes a guide rod and a third sliding member, the guide rod extends along the first direction, one of the two opposite ends of the guide rod along the first direction is connected to the positioning assembly, and the other end is slidably connected to the third sliding member, the first elastic member is sleeved on the guide rod, and is respectively connected to the positioning assembly and the blocking member, and the blocking member is connected to the third sliding member. The present application configures a guide rod and a third sliding member, sleeves the first elastic member on the guide rod, and slides the third sliding member on the guide rod to compress the first elastic member, so that the first elastic member can be extended and retracted along the first direction, and the extension and retraction direction of the first elastic member is guided, thereby improving the stability of the first elastic member during the deformation and extension process.

[0022] In some embodiments of the present application, the blocking member includes a first end connected to the positioning assembly and a second end for blocking the battery, the second end is provided with a first air outlet, the first air outlet extends along the first direction, and the first end is provided with an air filling port connected to the first air outlet. The present application can facilitate the filling of the interior of the detection box by providing an air filling port on the blocking member, so as to facilitate the air tightness detection of the battery.

[0023] In some embodiments of the present application, the airtightness detection device further includes an expansion member, the expansion member is connected to the second end of the blocking member, the expansion member is provided with a second air outlet connected to the first air outlet, and the expansion member expands when the first air outlet and the second air outlet release air. The present application configures the expansion member and utilizes the expansion of the expansion member to better block the battery.

[0024] In a second aspect, an embodiment of the present application provides a battery production system, comprising an airtightness detection device as described in any of the above technical solutions. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the structure of an airtightness detection device provided in some embodiments of the present application;

[0027] Figure 2 A partial structural schematic diagram of an airtightness detection device provided in some embodiments of the present application;

[0028] Figure 3 A schematic diagram of the structure of the sealing member of the airtightness detection device provided in some embodiments of the present application when sealing;

[0029] Figure 4 A schematic structural diagram of the airtightness detection device provided in some embodiments of the present application, excluding the detection box, at a first viewing angle;

[0030] Figure 5 A schematic structural diagram of the airtightness detection device provided in some embodiments of the present application, with the detection box removed, at a second viewing angle;

[0031] Figure 6 A schematic structural diagram of the airtightness detection device provided in some embodiments of the present application, with the detection box removed, at a third viewing angle;

[0032] Figure 7 A schematic structural diagram of the airtightness detection device provided in some embodiments of the present application, with the detection box removed, at a fourth viewing angle;

[0033] Figure 8 for Figure 7 Schematic diagram of the structure after removing the expansion piece.

[0034] The reference numerals of the specific embodiments are as follows:

[0035] 1. Air tightness detection device;

[0036] 2. Detection box; 201. first box wall; 2011. first surface; 2012. second surface; 2013. jack;

[0037] 3. A first mounting member;

[0038] 4. Positioning components;

[0039] 5. Blocking member; 501. Main body; 502. Position limiting flange; 503. Sealing structure; 5031. First sealing member; 5032. Second sealing member; 504. First end; 5041. Inflating port; 505. Second end; 5051. First air outlet;

[0040] 6. Second mounting member; 601. First slide rail;

[0041] 7. first sliding member; 701. second sliding rail;

[0042] 8. First reset assembly; 801. First connecting arm; 802. First reset mechanism; 803. First clamping drive mechanism;

[0043] 9. A second sliding member;

[0044] 10. Second reset assembly; 1001. Second connecting arm; 1002. Second reset mechanism; 1003. Second clamping drive mechanism;

[0045] 11. Elastic buffer mechanism; 1101. First elastic member; 1102. Guide rod; 1103. Third sliding member;

[0046] 12. expansion member; 1201. second air outlet;

[0047] 13. Battery; 1301. Water cooling plate; 13011. Opening;

[0048] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0050] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0051] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0052] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0053] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0054] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0055] The term "plurality" used in the present application refers to two or more (including two).

[0056] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a battery box for encapsulating one or more battery cells. The battery box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0057] The battery cells mentioned in the embodiments of the present application may be lithium-ion secondary battery cells, lithium-ion primary battery cells, lithium-sulfur battery cells, sodium-lithium-ion battery cells, sodium-ion battery cells or magnesium-ion battery cells, etc., which are not limited in the embodiments of the present application. The battery cells may be cylindrical, flat, cuboid or other shapes, which are not limited in the embodiments of the present application.

[0058] The battery cell mentioned in the embodiments of the present application may include an electrode assembly and an electrolyte, and the electrode assembly includes a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive current collector and a positive active material layer, and the positive active material layer is coated on the surface of the positive current collector; the positive current collector includes a positive electrode coating area and a positive electrode ear connected to the positive electrode coating area, the positive electrode coating area is coated with a positive electrode active material layer, and the positive electrode ear is not coated with a positive electrode active material layer. Taking a lithium-ion battery cell as an example, the material of the positive current collector can be aluminum, and the positive electrode active material layer includes a positive electrode active material, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, and the negative electrode active material layer is coated on the surface of the negative electrode current collector; the negative electrode current collector includes a negative electrode coating area and a negative electrode tab connected to the negative electrode coating area, the negative electrode coating area is coated with a negative electrode active material layer, and the negative electrode tab is not coated with a negative electrode active material layer. The material of the negative electrode current collector can be copper, and the negative electrode active material layer includes a negative electrode active material, and the negative electrode active material can be carbon or silicon, etc. The material of the separator can be PP (polypropylene) or PE (polyethylene), etc.

[0059] The battery cells described in the embodiments of the present application are suitable for batteries and electrical devices using batteries. Electrical devices may be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and electric tools, etc. Vehicles may be fuel vehicles, gas vehicles, or new energy vehicles, and new energy vehicles may be pure electric vehicles, hybrid vehicles, or extended-range vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc.; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0060] Below, the embodiments of the present application are described in detail.

[0061] At present, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0062] During the battery production process, it is necessary to test its various parameters and performance, and airtightness testing is an indispensable part of battery testing. When testing the airtightness of the battery, it is necessary to use an airtightness testing device.

[0063] The specific test process for the air tightness of the battery can be to place the battery into an air tightness test box, and then use the sealing parts in the test box to seal the openings of the test box and the water cooling plate of the battery, so that the test box and the battery form a closed space, and then inflate and pressurize the closed space for testing, and use the detected change in air pressure to obtain the air tightness of the battery.

[0064] However, the existing blocking members are all fixedly arranged inside the box, and their actual positions cannot be observed, resulting in an inability to adjust according to the actual position of the battery, which affects the adaptability and detection efficiency of the detection device.

[0065] Therefore, how to make the plugging parts visible and adjustable is an important issue in battery production and processing.

[0066] In view of this, the present application provides a technical solution, which solves the above technical problems by disposing a blocking member on the outside of the box, configuring a first mounting member and a positioning component, and using the positioning component to perform preliminary adjustment on the position of the blocking member.

[0067] The following is combined with Figure 1-8 The airtightness detection device of this embodiment is described and introduced.

[0068] Combined with Figure 1-3 As shown, this embodiment provides an airtightness detection device 1, including a detection box body 2, a first mounting member 3, an adjustment component 4 and a blocking member 5, the detection box body 2 includes a first box wall 201, the first box wall 201 includes a first surface 2011 and a second surface 2012, and a socket 2013 passing through the first box wall 201; the first mounting member 3 is located outside the detection box body 2 and is connected to the first surface 2011; the adjustment component 4 is connected to the first mounting member 3; the blocking member 5 is connected to the adjustment component 4, and the blocking member 5 is inserted into or separated from the socket 2013 along a first direction X driven by the adjustment component 4, and the first direction X is the arrangement direction of the first surface 2011 and the second surface 2012.

[0069] The detection box 2 of this embodiment can be a rectangular box structure as shown in the figure, the first box wall 201 in the figure is the upper box wall of the detection box 2, the first surface 2011 can be understood as the upper surface of the first box wall 201, and the second surface 2012 is the lower surface. Of course, in addition to the above-mentioned first box wall 201, the detection box 2 also includes multiple other box walls, which are not identified one by one in this embodiment. Of course, the cross-sectional shape of the detection box 2 can also be a polygon, a triangle, etc., which are not listed too much in this embodiment.

[0070] After the battery 13 is placed in the detection box 2 and the sealing piece 5 is inserted into the hole 2013, the detection box 2 of this embodiment forms a sealed chamber. The detection box 2 of this embodiment can be formed into a vacuum box by evacuating the vacuum box, and then the pressure in the vacuum box is tested to determine the sealing of the battery 13.

[0071] The first mounting member 3, the positioning assembly 4 and the blocking member 5 of this embodiment together form a blocking structure. The number of the blocking structure can be Figure 1 In order to facilitate the display of the socket 2013, the number of the socket 2013 in this embodiment may be more or less. Figure 2 Only one blocking structure is shown, and the specific number is determined according to the insertion hole 2013 on the detection box 2 and the opening 13011 on the water cooling plate 1301 of the battery 13 .

[0072] The first mounting member 3 of this embodiment can be a plate, a block or other shapes, and the material can be metal or polymer material, as long as it can meet the installation and adjustment component 4. Therefore, the shape and material of the first mounting member 3 will not be introduced in detail in this embodiment.

[0073] The positioning assembly 4 of this embodiment may include a linear reciprocating motion structure such as a cylinder and a hydraulic cylinder. Taking the cylinder as an example, the cylinder body of the cylinder may be installed on the first mounting member 3, and then the blocking member 5 may be driven to move along the first direction X by the piston rod of the cylinder.

[0074] Combined with Figure 3 As shown, the sealing member 5 of this embodiment is used to seal the socket 2013, and can also be used to seal the opening 13011 or the opening (not shown in the figure) of the water-cooling plate 1301 of the battery 13 located in the detection box 2. Unlike the related art in which the sealing member 5 is located in the detection box 2, this embodiment arranges the first mounting member 3, the positioning assembly 4 and the sealing member 5 outside the detection box 2, and drives the sealing member 5 to perform the sealing action through the positioning assembly 4. Compared with the method of arranging the sealing member 5 in the detection box 2, it is easier to observe and adjust the position of the sealing member 5, which can improve the efficiency of the air tightness detection of the battery 13 box to a certain extent.

[0075] Combined with Figure 4 -Attached Figure 7 As shown, in some examples, optionally, the airtightness detection device 1 also includes a second mounting member 6 and a first sliding member 7, the second mounting member 6 is connected to the positioning assembly 4, the first sliding member 7 is connected to the second mounting member 6 in a manner that can slide along the second direction Y, the blocking member 5 is connected to the first sliding member 7, and the second direction Y intersects with the first direction X.

[0076] The second mounting member 6 of the present embodiment may be a plate-shaped member or a block-shaped member, and its material is the same as or similar to that of the first mounting member 3. The length direction of the second mounting member 6 may extend along the second direction Y. The first direction X may be a vertical direction when the detection box 2 is being detected. The second direction Y may be perpendicular to the first direction X and may be parallel to the first surface 2100. At this time, the second direction Y of the present embodiment is a direction in the horizontal direction.

[0077] In the present application, the first sliding member 7 can drive the blocking member 5 to move along the second direction Y by sliding the first sliding member 7 on the second mounting member 6, so that the blocking member 5 can be adjusted in the first direction X and the second direction Y, further facilitating the position adjustment of the blocking member 5.

[0078] In this embodiment, the first slide rail 601 is provided on the second mounting member 6 to realize the sliding of the first slide member 7, which has a simple structure and is easy to implement. The structure of the first slide member 7 sliding on the second mounting member 6 in this embodiment has various forms, for example, a slide groove is provided on the second mounting member 6, and the first slide member 7 is slidably connected to the slide groove (this embodiment is not shown in the figure).

[0079] For another example, in some examples, optionally, the side of the second mounting member 6 of this embodiment facing the first surface 2011 is connected to the first slide rail 601, and the first sliding member 7 is connected to the first slide rail 601 in a manner that it can slide along the second direction Y.

[0080] The length direction of the first slide rail 601 of this embodiment extends along the second direction Y. The structure of the first slide rail 601 can be similar to that of a rail, and its cross section is an I-shaped, or of course, an inverted T-shaped, etc. The first slide rail 601 of this embodiment can be integrally formed with a part of the second mounting member 6, or the two can be assembled after being formed.

[0081] Accordingly, the first sliding member 7 of this embodiment is provided with a first slide groove slidably connected to the first slide rail 601 (the first slide groove is not marked because it is filled with the first slide rail 601), and the first slide groove and the first slide rail 601 are slidably matched to achieve the first sliding member 7 to slide along the second direction Y. Of course, the structure matching the first slide rail 601 is not limited to the first slide groove, for example, the first sliding member 7 may also be provided with a slider connected to the slide rail (this embodiment is not shown in the figure).

[0082] In some examples, optionally, the airtightness detection device 1 also includes a first reset component 8, which is installed on the second mounting member 6 and connected to the first sliding member 7. The first sliding member 7 can slide between the first initial position of the first slide rail 601 and the first two side positions on both sides of the first initial position in the second direction Y under the action of external force. The first reset component 8 is configured to drive the first sliding member 7 to reset to the first initial position after sliding from the first initial position to one of the first two side positions.

[0083] Taking the example of a first slide rail 601 being provided on the second mounting member 6, the first initial position of the first sliding member 7 of this embodiment can be the middle of the first slide rail 601 along the second direction Y, and the first two side positions can be a position between the middle and the end of the first slide rail 601 along the second direction Y.

[0084] When the blocking member 5 of the present embodiment is blocking, there may be a position deviation in the second direction Y. This deviation may be that the placement position or specification of the battery 13 is different from the preset one. At this time, the detection box 2 or the battery 13 may give the blocking member 5 a reaction force along the second direction Y, thereby driving the blocking member 5 and the first sliding member 7 of the present embodiment to move a short distance along the second direction Y, ensuring that the blocking member 5 can block the detection box 2 and the battery 13.

[0085] After the current battery 13 is detected, the blocking member 5 is disengaged from the insertion hole 2013 , and the first reset component 8 of this embodiment resets the blocking member 5 in the second direction Y to facilitate subsequent detection of the remaining batteries 13 , thereby achieving floating adjustment of the blocking member 5 in the second direction Y.

[0086] In some examples, optionally, the first reset assembly 8 includes two first connecting arms 801 and two first reset mechanisms 802, the two first connecting arms 801 are arranged at intervals on the second mounting member 6 along the second direction Y, the two first reset mechanisms 802 are connected to the two first connecting arms 801 one by one, and are in a first initial position, the first sliding member 7 abuts between the two first reset mechanisms 802, and when the first sliding member 7 slides from the first initial position of the first slide rail 601 to one of the first two side positions, one of the first reset mechanisms 802 is compressed, and when the external force on the first sliding member 7 is released, the compressed first reset mechanism 802 drives the first sliding member 7 to reset to the first initial position.

[0087] The first connecting arm 801 of this embodiment is mainly used to install two first reset mechanisms 802. The connection method between the first connecting arm 801 and the corresponding first reset mechanism 802 can be a fixed connection or a detachable connection. The fixed connection method includes welding, bonding, etc., and the detachable connection method includes snap-in, plug-in and bolt connection, etc. This embodiment does not impose too many restrictions on this, as long as the stability of the first reset mechanism 802 after installation on the first connecting arm 801 can be guaranteed.

[0088] When the blocking member 5 of this embodiment has no external force in the second direction Y, the first sliding member 7 is in the first initial position. At this time, the first sliding member 7 can be in the middle of the first slide rail 601 , and the first sliding member 7 abuts between the two first reset mechanisms 802 .

[0089] When the blocking member 5 of this embodiment is subjected to external force in the second direction Y, the first sliding member 7 slides from the first initial position to the first two side positions, one of the first restoring mechanisms 802 is compressed, and the other first restoring mechanism 802 is released from contact with the first sliding member 7. Then, when the blocking member 5 is lifted up and withdrawn from the insertion hole 2013, when the external force disappears, the compressed first restoring mechanism 802 drives the first sliding member 7 to return to the first initial position.

[0090] Since the second direction Y has Figure 4 Therefore, two first reset mechanisms 802 need to be configured. By using the two first reset mechanisms 802, the first sliding member 7 and the blocking member 5 can be reset in the two direction components of the second direction Y. At the same time, when the first sliding member 7 slides, the reaction force provided by the first reset mechanism 802 can improve the stability of the first sliding member 7 during the sliding process.

[0091] In some examples, the first reset mechanism 802 of this embodiment may include a hydraulic buffer, which can be compressed under the pressure of the first sliding member 7, and can also be restored to its original length when the pressure of the first sliding member 7 is withdrawn. Of course, the first reset mechanism 802 of this embodiment may also be an elastic member such as a spring, which is not listed one by one in this embodiment.

[0092] In addition, the “compression” of the first restoring mechanism 802 in this embodiment should be understood in a broad sense, that is, the first restoring mechanism 802 may be contracted as a whole, or the length of the first restoring mechanism 802 may be shortened.

[0093] In some examples, optionally, the first resetting assembly 8 also includes a first clamping drive mechanism 803, which is connected to the second mounting member 6, and the first clamping drive mechanism 803 is respectively connected to the two first connecting arms 801, and is configured to drive the two first connecting arms 801 to move closer to or away from each other along the second direction Y.

[0094] By configuring the first clamping drive mechanism 803 , the positions of the two first connecting arms 801 can be easily adjusted to ensure that the first sliding member 7 can abut between the two first resetting mechanisms 802 .

[0095] The first clamping drive mechanism 803 of this embodiment can be in various forms, for example, two linear reciprocating motion mechanisms can be used to drive the two first connecting arms 801 to move respectively. In this case, the linear reciprocating motion mechanism can be a cylinder, a hydraulic cylinder, a screw motor or other structures.

[0096] In some examples, optionally, the first clamping drive mechanism 803 of the present embodiment includes a parallel clamping cylinder, the two clamping jaws of the parallel clamping cylinder can respectively drive the two first connecting arms 801 to move, and the parallel clamping cylinder only needs one piston rod to drive the movement of the two transmission components to drive the movement of the two first connecting arms 801, which can save the power source and the volume of the first clamping drive mechanism 803.

[0097] In some examples, optionally, the airtightness detection device 1 also includes a second sliding member 9, which is connected to the first sliding member 7 in a manner that can slide along a third direction Z, and the blocking member 5 is connected to the second sliding member 9, and the third direction Z intersects with the first direction X and the second direction Y respectively, and the third direction Z can be a direction parallel to the plate surface of the first mounting member 3.

[0098] The second sliding member 9 of this embodiment may be similar in structure and principle to the aforementioned first sliding member 7. The second sliding member 9 is slidably connected to the first sliding member 7. For example, a sliding groove or the second sliding rail 701 described below may be configured on the first sliding member 7, which will not be elaborated in this embodiment.

[0099] When the detection box 2 is actually inspected, the third direction Z of this embodiment can be a horizontal direction, the third direction Z can be parallel to the first surface 2011, and the third direction Z can be perpendicular to the first direction X and the second direction Y respectively. By sliding the second sliding member 9 on the first sliding member 7, the blocking member 5 can be driven to move along the third direction Z, so that the position of the blocking member 5 in the first direction X, the second direction Y and the third direction Z is adjustable, which further facilitates the position adjustment of the blocking member 5.

[0100] In some examples, optionally, a second slide rail 701 is connected to a side of the first sliding member 7 facing the first surface 2011 , and the second sliding member 9 is connected to the second slide rail 701 in a manner of being slidable along the third direction Z.

[0101] In this embodiment, the sliding of the second sliding member 9 is achieved by arranging the second sliding rail 701 on the first sliding member 7, which has a simple structure and is easy to assemble and connect.

[0102] The second slide rail 701 of this embodiment is similar in structure to the aforementioned first slide rail 601. Similarly, the connection method between the second slide rail 701 and the second sliding member 9 is the same as or similar to the connection method between the aforementioned first slide rail 601 and the first sliding member 7. Therefore, this embodiment does not make too many introductions to the above content.

[0103] In some examples, optionally, the airtightness detection device 1 also includes a second reset component 10, which is installed on the second mounting member 6 and connected to the second sliding member 9. The second sliding member 9 can slide between the second initial position of the second slide rail 701 and two second two side positions located on both sides of the second initial position in the second direction Y under the action of external force. The second reset component 10 is configured to drive the second sliding member 9 to reset after sliding from the second initial position to one of the second two side positions.

[0104] Taking the example of a second slide rail 701 being provided on the first slide member 7, the second initial position of the second slide member 9 of this embodiment can be the middle of the second slide rail 701 along the third direction Z, and the second two side positions can be a position between the middle and the end of the second slide rail 701 along the third direction Z.

[0105] When the blocking member 5 of the present embodiment is blocking, there may be a position deviation in the third direction Z. This deviation may be that the placement position or specification of the battery 13 is different from the preset one. At this time, the detection box 2 or the battery 13 may give the blocking member 5 a reaction force along the third direction Z, thereby driving the blocking member 5 and the second sliding member 9 of the present embodiment to move a short distance along the third direction Z, ensuring that the blocking member 5 can block the detection box 2 and the battery 13.

[0106] After the current battery 13 is detected, the blocking member 5 is disengaged from the socket 2013 , and the second reset assembly 10 of this embodiment resets the blocking member 5 in the third direction Z to facilitate subsequent detection of the remaining batteries 13 , thereby achieving floating adjustment of the blocking member 5 in the third direction Z.

[0107] In some examples, optionally, the second reset assembly 10 includes two second connecting arms 1001 and two second reset mechanisms 1002, the two second connecting arms 1001 are arranged at intervals on the second mounting member 6 along the third direction Z, the two second reset mechanisms 1002 are connected to the two second connecting arms 1001 one by one, and are in the second initial position, the second sliding member 9 abuts between the two second reset mechanisms 1002, and when the second sliding member 9 slides from the second initial position to the second two side positions, the second reset mechanism 1002 is compressed, and when the external force of the second sliding member 9 is released, the compressed second reset mechanism 1002 drives the second sliding member 9 to reset to the second initial position.

[0108] The second connecting arm 1001 of this embodiment is mainly used to install two second reset mechanisms 1002. The connection method between the second connecting arm 1001 and the corresponding second reset mechanism 1002 can be a fixed connection or a detachable connection. The specific connection method is not elaborated in this embodiment, as long as the stability of the first reset mechanism 802 after installation on the first connecting arm 801 can be guaranteed.

[0109] When the blocking member 5 of this embodiment has no external force in the third direction Z, the second sliding member 9 is in the second initial position. At this time, the second sliding member 9 can be in the middle of the second slide rail 701 , and the second sliding member 9 abuts between the two second reset mechanisms 1002 .

[0110] When the blocking member 5 of this embodiment is subjected to external force in the third direction Z, the second sliding member 9 slides from the second initial position to the second two side positions, one of the second reset mechanisms 1002 is compressed, and the other second reset mechanism 1002 is released from contact with the second sliding member 9. Then, when the blocking member 5 is lifted up and withdrawn from the insertion hole 2013, when the external force disappears, the compressed second reset mechanism 1002 drives the second sliding member 9 to reset to the second initial position.

[0111] Since the third direction Z has Figure 5 Therefore, two second reset mechanisms 1002 need to be configured. By using the two second reset mechanisms 1002, the second sliding member 9 and the blocking member 5 can be reset in the two directional components of the third direction Z. At the same time, when the second sliding member 9 slides, the reaction force provided by the second reset mechanism 1002 can improve the stability of the second sliding member 9 during the sliding process.

[0112] In some examples, optionally, the second resetting assembly 10 further includes a second clamping drive mechanism 1003 , which is respectively connected to the two second connecting arms 1001 and configured to drive the two second connecting arms 1001 to move closer to or away from each other along the third direction Z.

[0113] In this embodiment, by configuring the second clamping drive mechanism 1003 , the positions of the two second connecting arms 1001 can be easily adjusted so that the second sliding member 9 can abut between the two second resetting mechanisms 1002 .

[0114] Similarly, the second clamping drive mechanism 1003 of this embodiment may also include a parallel clamping jaw cylinder, which will not be described in detail in this embodiment.

[0115] Combined with Figure 6 and attached Figure 7 As shown, in some examples, optionally, the sealing member 5 includes a main body 501 and a limiting flange 502, the limiting portion is connected to one end of the main body 501 facing away from the first surface 2011, the limiting flange 502 is used to limit the first surface 2011 of the detection box 2, and the side of the limiting flange 502 facing the first surface 2011 is provided with a sealing structure 503 that seals with the first surface 2011.

[0116] The blocking member 5 of this embodiment may be a cylindrical structure, so the limiting flange 502 of this embodiment may be an annular flange, and the radial dimension of the annular flange is much larger than the radial dimension of the insertion hole 2013 .

[0117] The sealing structure 503 of this embodiment may be the structure of the annular flange itself, such as an annular protrusion disposed on the annular flange facing the first surface 2011 , or may be a sealing member disposed on the annular flange by welding or bonding.

[0118] In this embodiment, by configuring the limiting flange 502 and the sealing structure 503, the sealing performance of the plugging member 5 after being inserted into the plugging hole 2013 can be improved, thereby improving the accuracy of subsequent detection.

[0119] In some examples, optionally, the sealing structure 503 includes a first seal 5031 and a second seal 5032 , the first seal 5031 is disposed around the body 501 , the second seal 5032 is disposed around the first seal 5031 , and the first seal 5031 is located between the body 501 and the second seal 5032 .

[0120] The first seal 5031 and the second seal 5032 of this embodiment may be sealing gaskets. The first seal 5031 and the second seal 5032 are concentrically arranged. The first seal 5031 and the second seal 5032 may be made of deformable materials such as rubber and silicone.

[0121] In this embodiment, the first sealing member 5031 and the second sealing member 5032 perform double sealing on the limiting flange 502 and the first surface 2011 , thereby improving the sealing effect on the insertion hole 2013 .

[0122] In some examples, optionally, an elastic buffer mechanism 11 is further included, which is connected between the positioning assembly 4 and the blocking member 5 and is configured to be elastically deformable along the first direction X under the action of an external force.

[0123] The reason for configuring the elastic buffer mechanism 11 in the present embodiment is that, when the sealing member 5 blocks the opening 13011 of the water-cooling plate 1301 of the battery 13, it is easy for the sealing member 5 to collide with the water-cooling plate 1301 and be subjected to the reaction force of the water-cooling plate 1301, which may easily cause wear of the sealing member 5. Therefore, the present embodiment configures the elastic buffer mechanism 11. When the sealing member 5 is subjected to the pressure of the detection box 2 or the battery 13, the elastic buffer mechanism 11 plays a buffering role, thereby reducing the possibility of damage to the sealing member 5.

[0124] In some examples, optionally, the elastic buffer mechanism 11 includes a first elastic member 1101 extending along the first direction X, and the first elastic member 1101 is connected to the positioning assembly 4 and the blocking member 5 respectively.

[0125] The first elastic member 1101 of this embodiment can be a spring, which has the characteristics of simple structure, low cost and easy installation. When the airtightness detection device 1 of this embodiment includes the above-mentioned first sliding member 7 and second sliding member 9, the upper end of the first elastic member 1101 of this embodiment is directly connected to the above-mentioned second sliding member, and the connection method can be a fixed connection or abutment.

[0126] When the blocking member 5 is subjected to an external force in the first direction X, the blocking member 5 can be buffered by the elastic deformation of the first elastic member 1101 in the first direction X, so as to protect the blocking member 5 of this embodiment.

[0127] In some examples, optionally, the elastic buffer mechanism 11 also includes a guide rod 1102 and a third sliding member 1103, the guide rod 1102 extends along the first direction X, one end of the guide rod 1102 at two opposite ends along the first direction X is connected to the positioning assembly 4, and the other end is slidably connected to the third sliding member 1103, the first elastic member 1101 is sleeved on the guide rod 1102, and is respectively connected to the positioning assembly 4 and the blocking member 5, and the blocking member 5 is connected to the third sliding member 1103.

[0128] The guide plate of this embodiment is directly connected to the second sliding member 9 of this embodiment, and the first elastic member 1101 is sleeved on the guide rod 1102. The third sliding member 1103 slides on the guide rod 1102 to compress the first elastic member 1101, so that the first elastic member 1101 can be extended and retracted along the first direction X, and the extension and retraction direction of the first elastic member 1101 is guided, thereby improving the stability of the first elastic member 1101 during the deformation and extension process.

[0129] Combined with Figure 7 and attached Figure 8 As shown, in some examples, optionally, the sealing member 5 includes a first end 504 and a second end 505 opposite to each other, the first end 504 is used to connect the positioning assembly 4, the second end 505 is used to seal the battery 13, the second end 505 is provided with a first air outlet 5051, the first air outlet 5051 extends along the first direction X, and the first end 504 of the sealing member 5 is provided with an inflation port 5041 connected to the first air outlet 5051.

[0130] The length direction of the first air outlet 5051 of the present embodiment extends along the first direction X, and extends from the bottom end of the sealing member 5 to the top end. The first air outlet 5051 is connected only to the inflation port 5041 at the top end of the sealing member 5. There are multiple inflation ports 5041, and they can be located on multiple air nozzles. For example, the inflation port 5041 inflates the first air outlet 5051. The airflow in the first air outlet 5051 can enter the battery 13 through the opening 13011 of the water cooling plate 1301. When the detection box 2 is in a vacuum state, the airflow is filled into the battery 13 by using the first air outlet 5051. If the internal pressure of the detection box 2 changes, it means that the battery 13 may leak.

[0131] In some examples, optionally, the airtightness detection device 1 also includes an expansion piece 12, which is connected to the second end 505, and the expansion piece 12 is provided with a second air outlet 1201 connected to the first air outlet 5051. The expansion piece 12 expands when air is released from the first air outlet 5051 and the second air outlet 1201, and the expanded expansion piece 12 is used to seal the battery 13.

[0132] The expansion piece 12 of the present embodiment is used to seal the opening 13011 (not shown in the figure) of the water-cooling plate 1301 of the battery 13. The expansion piece 12 is a hollow structure with open ends along the first direction X to form a second air outlet 1201. The second air outlet 1201 is connected to the first air outlet 5051. The air flow out of the first air outlet 5051 enters the battery 13 through the second air outlet 1201, and the air outlet of the first air outlet 5051 and the second air outlet 1201 can drive the expansion piece 12 to expand outward, thereby improving the sealing ability of the opening 13011 of the water-cooling plate 1301, ensuring the sealing of the battery 13 during detection, thereby improving the accuracy of the airtightness detection of the battery 13.

[0133] Based on the above-mentioned airtightness detection device 1, the embodiment of the present application also provides a battery 13 production system, including the airtightness detection device 1 as described in the above-mentioned technical solution.

[0134] Finally, please see the attached Figure 1-8As shown, the embodiment of the present application provides an airtightness detection device 1, including a detection box 2, a first mounting member 3, a positioning assembly 4 and a blocking member 5, wherein the detection box 2 includes a first box wall 201, the first box wall 201 includes a first surface 2011 and a second surface 2012, and a plug hole 2013 penetrating the first box wall 201; the first mounting member 3 is mounted on the first box wall 201 and is located outside the detection box 2; the positioning assembly 4 is connected to the first mounting member 3; the blocking member 5 is connected to the positioning assembly 4, and the blocking member 5 is inserted into or separated from the plug hole 2013 along a first direction X driven by the positioning assembly 4, and the first direction X is the arrangement direction of the first surface 2011 and the second surface 2012. The airtightness detection device 1 also includes a second mounting member 6 and a first sliding member 7, the second mounting member 6 is connected to the positioning assembly 4, the first sliding member 7 is connected to the second mounting member 6 in a manner that it can slide along a second direction Y, and the blocking member 5 is connected to the first sliding member 7, and the second direction Y is parallel to the first surface 2011. A first slide rail 601 is connected to the side of the second mounting member 6 facing the first surface 2011, the first slide rail 601 extends along the second direction Y, and the first sliding member 7 is slidably connected to the first slide rail 601. The airtightness detection device 1 also includes a first reset component 8, the first reset component 8 is mounted on the second mounting member 6, and is connected to the first sliding member 7. The first sliding member 7 can slide between the first initial position of the first slide rail 601 and two first two side positions located on both sides of the first initial position under the action of an external force, and the first reset component 8 is configured to drive the first sliding member 7 to reset to the first initial position after sliding from the first initial position to one of the first two side positions. The first reset assembly 8 includes two first connecting arms 801 and two first reset mechanisms 802. The two first connecting arms 801 are arranged at intervals on the second mounting member 6 along the second direction Y. The two first reset mechanisms 802 are connected to the two first connecting arms 801 one by one and are in the first initial position. The first sliding member 7 abuts between the two first reset mechanisms 802. When the first sliding member 7 slides from the first initial position to the first two side positions, one of the first reset mechanisms 802 is compressed. When the external force on the first sliding member 7 is released, the compressed first reset mechanism 802 drives the first sliding member 7 to reset to the first initial position. The first reset assembly 8 also includes a first clamping drive mechanism 803. The first clamping drive mechanism 803 is connected to the second mounting member 6. The first clamping drive mechanism 803 is respectively connected to the two first connecting arms 801 and is configured to drive the two first connecting arms 801 to move closer to or farther from each other along the second direction Y. The airtightness detection device 1 further includes a second sliding member 9, which is connected to the first sliding member 7 in a manner that it can slide along a third direction Z, and the blocking member 5 is connected to the second sliding member 9, and the third direction Z intersects the first direction X and the second direction Y. A second slide rail 701 is connected to the side of the first sliding member 7 facing the first surface 2011, and the second slide rail 701 extends along the third direction Z, and the second sliding member 9 is slidably connected to the second slide rail 701.The present application realizes the sliding of the second sliding member 9 by setting the second slide rail 701 on the first sliding member 7, which has a simple structure and is easy to implement. The airtightness detection device 1 also includes a second reset component 10, which is installed on the second mounting member 6 and connected to the second sliding member 9. The second sliding member 9 can slide between the second initial position of the second slide rail 701 and the two second two side positions located on both sides of the second initial position under the action of an external force. The second reset component 10 is configured to drive the first sliding member 7 to reset after sliding from the second initial position to the second two side positions. The second reset assembly 10 includes two second connecting arms 1001 and two second reset mechanisms 1002. The two second connecting arms 1001 are arranged at intervals on the second mounting member 6 along the third direction Z. The two second reset mechanisms 1002 are connected to the two second connecting arms 1001 one by one and are in the second initial position. The second sliding member 9 abuts between the two second reset mechanisms 1002. When the second sliding member 9 slides from the second initial position to one of the second two side positions, the second reset mechanism 1002 is compressed. When the external force of the second sliding member 9 is released, the compressed second reset mechanism 1002 drives the second sliding member 9 to reset to the second initial position. The second reset assembly 10 also includes a second clamping drive mechanism 1003. The second clamping drive mechanism 1003 is respectively connected to the two second connecting arms 1001 and is configured to drive the two second connecting arms 1001 to move closer to or farther from each other along the third direction Z. The blocking member 5 includes a body 501 and a limiting flange 502, wherein the limiting flange 502 is connected to one end of the body 501 away from the first surface 2011, and the limiting flange 502 is used to limit the first surface 2011 around the plug hole 2013, and a sealing structure 503 is provided on the side of the limiting flange 502 facing the first surface 2011 to seal with the first surface 2011. The sealing structure 503 includes a first sealing member 5031 and a second sealing member 5032, wherein the first sealing member 5031 is arranged around the body 501, and the second sealing member 5032 is arranged around the first sealing member 5031, and the first sealing member 5031 is located between the body 501 and the second sealing member 5032. The airtightness detection device 1 also includes an elastic buffer mechanism 11, which is connected between the adjustment component 4 and the blocking member 5, and is configured to be elastically deformed along the first direction X under the action of an external force. The elastic buffer mechanism 11 includes a first elastic member 1101 extending along the first direction X, and the first elastic member 1101 is respectively connected to the position adjustment component 4 and the blocking member 5. The elastic buffer mechanism 11 also includes a guide rod 1102 and a third sliding member 1103, the guide rod 1102 extends along the first direction X, one of the opposite ends of the guide rod 1102 along the first direction X is connected to the position adjustment component 4, and the other end is slidably connected to the third sliding member 1103, the first elastic member 1101 is sleeved on the guide rod 1102, and is respectively connected to the position adjustment component 4 and the blocking member 5, and the blocking member 5 is connected to the third sliding member 1103.The blocking member 5 includes a first end 504 connected to the positioning assembly 4 and a second end 505 for blocking the battery 13. The second end 505 is provided with a first air outlet 5051, and the first air outlet 5051 extends along the first direction X. The first end 504 is provided with an air filling port 5041 connected to the first air outlet 5051. The airtightness detection device 1 also includes an expansion member 12, which is connected to the second end 505 of the blocking member 5, is connected to the first air outlet 5051, and expands when the first air outlet 5051 releases air.

[0135] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0136] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An airtightness detection device, characterized in that: include: A detection box, the detection box comprising a first box wall, the first box wall comprising a first surface and a second surface, and a plug hole penetrating through the first box wall; A first mounting member, the first mounting member is mounted on the first box wall and is located outside the detection box; a position adjustment component connected to the first mounting member; as well as A blocking piece is connected to the positioning assembly, and the blocking piece can be inserted into or disengaged from the insertion hole along a first direction driven by the positioning assembly, wherein the first direction is an arrangement direction of the first surface and the second surface.

2. The airtightness detection device according to claim 1, characterized in that: The airtightness detection device further comprises a second mounting member, the second mounting member is connected to the positioning assembly, the blocking member is connected to the second mounting member in a manner that it can slide along a second direction, and the second direction intersects with the first direction.

3. The airtightness detection device according to claim 2, characterized in that: The airtightness detection device further includes a first sliding member, the first sliding member is connected to the second mounting member in a manner of being slidable along a second direction, and the blocking member is connected to the first sliding member.

4. The airtightness detection device according to claim 3, characterized in that: A first slide rail is connected to a side of the second mounting member facing the first surface. The first slide rail extends along the second direction. The first sliding member is slidably connected to the first slide rail.

5. The airtightness detection device according to claim 4, characterized in that: The airtightness detection device also includes a first reset component, which is installed on the second mounting member and connected to the first sliding member. The first sliding member can slide between a first initial position of the first slide rail and two first two side positions located on both sides of the first initial position under the action of external force. The first reset component is configured to drive the first sliding member to reset to the first initial position.

6. The airtightness detection device according to claim 5, characterized in that: The first reset assembly includes two first connecting arms and two first reset mechanisms, the two first connecting arms are arranged at intervals on the second mounting member along the second direction, the two first reset mechanisms are connected to the two first connecting arms one by one and are in the first initial position, the first sliding member is located between the two first reset mechanisms, when the first sliding member slides from the first initial position to the first two side positions, one of the first reset mechanisms is compressed, and when the external force on the first sliding member is released, the compressed first reset mechanism drives the first sliding member to reset to the first initial position.

7. The airtightness detection device according to claim 6, characterized in that: The first resetting assembly also includes a first clamping drive mechanism, which is connected to the second mounting member. The first clamping drive mechanism is respectively connected to the two first connecting arms and is configured to drive the two first connecting arms to move closer to or away from each other along the second direction.

8. The airtightness detection device according to any one of claims 3 to 7, characterized in that: The airtightness detection device further includes a second sliding member, which is connected to the first sliding member in a manner of being slidable along a third direction, and the blocking member is connected to the second sliding member, and the third direction intersects with the first direction and the second direction respectively.

9. The airtightness detection device according to claim 8, characterized in that: A second slide rail is connected to a side of the first slide member facing the first surface. The second slide rail extends along the second direction. The second slide member is slidably connected to the second slide rail.

10. The airtightness detection device according to claim 9, characterized in that: The airtightness detection device also includes a second reset component, which is installed on the second mounting member and connected to the second sliding member. The second sliding member can slide between a second initial position of the second slide rail and two second two side positions located on both sides of the second initial position under the action of external force. The second reset component is configured to drive the second sliding member to reset.

11. The airtightness detection device according to claim 10, characterized in that: The second reset assembly includes two second connecting arms and two second reset mechanisms, the two second connecting arms are arranged at intervals on the second mounting member along the third direction, the two second reset mechanisms are connected to the two second connecting arms one by one and are in the second initial position, the second sliding member is located between the two second reset mechanisms, when the second sliding member slides from the second initial position to the second two side positions, one of the second reset mechanisms is compressed, and when the external force on the second sliding member is released, the compressed second reset mechanism drives the second sliding member to reset to the second initial position.

12. The airtightness detection device according to claim 11, characterized in that: The second resetting assembly further includes a second clamping drive mechanism, which is respectively connected to the two second connecting arms and is configured to drive the two second connecting arms to move closer to or farther from each other along the third direction.

13. The airtightness detection device according to any one of claims 1 to 7, characterized in that: The sealing member includes a main body and a limiting flange, wherein the limiting flange is connected to one end of the main body away from the first surface, and the limiting flange is used to limit the first surface around the insertion hole. The side of the limiting flange facing the first surface is provided with a sealing structure that seals with the first surface.

14. The airtightness detection device according to claim 13, characterized in that: The sealing structure includes a first sealing member and a second sealing member, wherein the first sealing member is disposed around the body, the second sealing member is disposed around the first sealing member, and the first sealing member is located between the body and the second sealing member.

15. The airtightness detection device according to claim 13, characterized in that: The airtightness detection device further comprises an elastic buffer mechanism, which is connected between the positioning assembly and the blocking member and is configured to be elastically deformable along the first direction under the action of an external force.

16. The airtightness detection device according to claim 15, characterized in that: The elastic buffer mechanism includes a first elastic member extending along the first direction, and the first elastic member is connected to the position adjustment component and the blocking member respectively.

17. The airtightness detection device according to claim 16, characterized in that: The elastic buffer mechanism also includes a guide rod and a third sliding member. The guide rod extends along the first direction. The guide rod is connected to the adjustment assembly along one end and is slidably connected to the third sliding member at the other end. The first elastic member is sleeved on the guide rod and is respectively connected to the adjustment assembly and the blocking member. The blocking member is connected to the third sliding member.

18. The airtightness detection device according to any one of claims 1 to 7, characterized in that: The blocking member includes a first end connected to the positioning assembly and a second end for blocking the battery, the second end is provided with a first air outlet extending along the first direction, and the first end is provided with an air filling port connected to the first air outlet.

19. The airtightness detection device according to claim 18, characterized in that: The air tightness detection device also includes an expansion member, which is connected to the second end of the blocking member, and is provided with a second air outlet hole connected to the first air outlet hole. The expansion member expands when air is released from the first air outlet hole and the second air outlet hole.

20. A battery production system, characterized in that: Comprising an airtightness detection device as described in any one of claims 1-19.

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