Packaging assembly, battery and detection method
By setting up interconnected air guide grooves in the package assembly, the false sealing problem during assembly is solved, the detection of missing or damaged seals is achieved, and the yield of the battery and product quality are improved.
Patent Information
- Application Number
- CN202411371476.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2024-12-10
AI Technical Summary
In the prior art, when assembling the packaging assembly, a false seal is formed due to the compression between the components, which cannot be detected whether the sealing ring is missing or damaged, affecting the airtightness and quality of the product.
A package assembly is designed, including a cover plate, an insulator and a connecting member, and a first and second air conductor grooves are provided in communication with each other, so that when the seal is missing or damaged, gas forms a detection path through these passages to ensure that Fake sealing does not occur, so that the sealing member can be effectively detected.
By setting up interconnected air guide grooves, effective detection of missing or damaged seals is achieved, liquid leakage is avoided, and the yield of the battery and product quality are improved.
Smart Images
Figure CN119108721A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of batteries, and in particular to a packaging component, a battery and a detection method. Background Art
[0002] During the production process, many products need to be installed with sealing rings during assembly to ensure the sealing of the product. For example, the sealing ring in the packaging component can prevent leakage. After assembly, the product needs to be tested for airtightness by helium. If leakage occurs, it means that the sealing ring is not installed or is damaged. In the prior art, when the product is assembled, there will be a certain degree of compression between the components. At this time, although there is no sealing ring installed between the components, a short-term false seal will be formed after the components are temporarily fitted together. The role of the false seal is the same as that of the sealing ring installed between the components. Therefore, when the product is tested, it will not be possible to detect whether the sealing ring of the product is missing or damaged. Summary of the invention
[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a packaging assembly that can effectively detect whether a seal is missing or whether a seal is damaged.
[0004] The present invention also provides a battery having the above-mentioned packaging assembly, and a detection method for detecting the packaging assembly.
[0005] According to the first aspect of the present invention, the packaging assembly includes a cover plate, an insulating member, a connecting member, and a sealing member. The cover plate is provided with a first mounting hole and a first air guide groove that are interconnected. The insulating member is arranged in the first mounting hole, the insulating member is provided with a second mounting hole, the second mounting hole is connected to the first mounting hole, the hole wall of the second mounting hole is provided with a second air guide groove, and the second air guide groove is connected to the first mounting hole. The connecting member is arranged in the second mounting hole. The sealing member is arranged in the first mounting hole, and the sealing member is used to prevent the first air guide groove and the second air guide groove from being connected to each other.
[0006] The packaging component according to the embodiment of the present invention has at least the following beneficial effects: the first mounting hole is connected with the first air guide groove, the second mounting hole and the second air guide groove, so the first air guide groove and the second air guide groove are connected through the first mounting hole. When the seal is not missing or damaged, the seal prevents the first air guide groove and the second air guide groove from being connected to each other. At this time, the air tightness test is normal. When the seal is missing or damaged, since the first air guide groove and the second air guide groove do not exist in the prior art, a short-term false seal will be formed between the cover plate and the insulating part of the packaging component after they are fitted together. When the product is tested, it is impossible to detect whether the seal is missing or damaged. The packaging component of the embodiment of the present invention is provided with the first air guide groove and the second air guide groove that are connected to each other, so that when the seal is missing or damaged, the gas in the test process forms a passage through the first air guide groove, the first mounting hole and the second air guide groove, and the cover plate and the insulating part cannot be completely fitted to form a false seal, which can effectively detect the missing or damaged seal.
[0007] According to some embodiments of the present invention, the insulating member has an outer surface disposed opposite to the cover plate, the outer surface is provided with a third air guide groove, and the third air guide groove is communicated with the second air guide groove.
[0008] According to some embodiments of the present invention, the packaging assembly further includes a pole connected to the outer surface, and the pole covers a portion of the notch of the third air guide groove.
[0009] According to some embodiments of the present invention, the cover plate is provided with placement grooves, which are connected to the first air guide groove and the first mounting hole. The seal includes a first sealing ring and a second sealing ring which are connected to each other. The second sealing ring protrudes radially relative to the first sealing ring. The first sealing ring is arranged in the first mounting hole, and the second sealing ring is arranged in the placement groove.
[0010] According to some embodiments of the present invention, a middle surface is defined, and the middle surface divides the second mounting hole into a first part and a second part along the center of the second mounting hole, and the first air guide groove and the second air guide groove are both located on the same side of the middle surface.
[0011] According to some embodiments of the present invention, the connecting member includes an abutment portion and a connecting shaft that are connected to each other, the connecting shaft passes through a first mounting hole and a second mounting hole, the abutment portion abuts against the cover plate, the first air guide groove is arranged on a side surface of the cover plate facing the abutment portion, and the abutment portion covers a portion of the slot of the first air guide groove.
[0012] According to some embodiments of the present invention, the insulating part includes a main body and an extension part, the extension part extends relative to the main body, the cover plate is provided with a limiting groove, the extension part is placed in the limiting groove, the groove wall of the limiting groove abuts against the extension part to limit the extension part from rotating along its own axis.
[0013] According to some embodiments of the present invention, the first air guide groove extends radially along the first mounting hole, the width of the first air guide groove is D1mm, the diameter of the first mounting hole is D2mm, 0.05mm<D1<0.5D2, and / or the depth of the first air guide groove is D3mm, 0.05mm≤D3<3mm.
[0014] According to some embodiments of the present invention, the second air guide groove extends along the axial direction of the second mounting hole, the width of the second air guide groove is D4 mm, the diameter of the second mounting hole is D5 mm, and 0.05 mm<D4<0.5D5.
[0015] According to some embodiments of the present invention, the first air guide groove extends radially along the first mounting hole, the length of the first air guide groove is Lmm, the end surface diameter of the connecting member close to the first air guide groove is L1mm, the end surface diameter of the sealing member close to the first air guide groove is L2mm, and L>(L1-L2) / 2.
[0016] A battery according to an embodiment of the second aspect of the present invention comprises a packaging assembly according to any one of the embodiments of the present invention.
[0017] The battery according to the embodiment of the present invention has at least the following beneficial effects: the packaging component of the embodiment of the present invention is provided with a first air guide groove and a second air guide groove that are interconnected, so that when the seal is missing or damaged, the gas in the detection process forms a passage through the first air guide groove, the first mounting hole and the second air guide groove, and the cover plate and the insulating member cannot be completely fitted to form a false seal, which can effectively detect the missing or damaged seal. Therefore, the battery with the packaging component can effectively detect the missing or damaged sealing ring, thereby effectively avoiding leakage and the like, which can improve the yield of the battery.
[0018] According to the detection method of the third aspect of the present invention, the sealing member of the packaging assembly is used to detect the sealing member of the packaging assembly, and the packaging assembly includes a cover plate, an insulating member and a connecting member. The cover plate is provided with a first mounting hole and a first air guide groove which are interconnected. The insulating member is arranged in the first mounting hole, and the insulating member is provided with a second mounting hole, and the second mounting hole is connected to the first mounting hole. The hole wall of the second mounting hole is provided with a second air guide groove, and the second air guide groove is connected to the first mounting hole. The connecting member is arranged in the second mounting hole.
[0019] The detection method comprises the following steps: inflating the first gas guide groove, detecting whether there is gas at the second gas guide groove, and judging whether the sealing member is missing or damaged according to the detection result of the gas at the second gas guide groove. Alternatively, inflating the second gas guide groove, and judging whether there is gas in the first gas guide groove, and judging whether the sealing member is missing or damaged according to the detection result of the gas at the first gas guide groove.
[0020] The detection method according to the embodiment of the present invention has at least the following beneficial effects: when there is no missing or damaged seal in the packaging component, the first air guide groove or the second air guide groove is inflated, and due to the presence of a sealing ring that hinders the connection between the first air guide groove and the second air guide groove, no gas can be detected at the other end; and when the seal in the packaging component is missing or damaged, the first air guide groove is connected to the second air guide groove, and at this time the first air guide groove or the second air guide groove is inflated, gas can be detected at the other end. Therefore, the detection method can effectively detect whether there is a missing seal or a damaged seal in the packaging component.
[0021] According to the detection method of the third embodiment of the present invention, it is used to detect the seal of the packaging component, and the packaging component includes a cover plate, an insulating member and a connecting member. The cover plate is provided with a first mounting hole and a first air guide groove that are interconnected. The insulating member is arranged in the first mounting hole, and the insulating member is provided with a second mounting hole, and the second mounting hole is connected to the first mounting hole. The hole wall of the second mounting hole is provided with a second air guide groove, and the second air guide groove is connected to the first mounting hole. The insulating member has an outer surface that is arranged opposite to the cover plate, and the outer surface is provided with a third air guide groove, and the third air guide groove is connected to the second air guide groove. The connecting member is arranged in the second mounting hole.
[0022] The detection method comprises the following steps: inflating the first gas guide groove, detecting whether there is gas at the third gas guide groove, and judging whether the sealing member is missing or damaged according to the detection result of the gas at the third gas guide groove. Alternatively, inflating the third gas guide groove, and judging whether there is gas in the first gas guide groove, and judging whether the sealing member is missing or damaged according to the detection result of the gas at the first gas guide groove.
[0023] According to the detection method of the embodiment of the present invention, there are at least the following beneficial effects: the first air guide groove, the second air guide groove and the third air guide groove are connected to each other. When there is no missing or damaged seal in the packaging component, the first air guide groove or the third air guide groove is inflated. Since there is a sealing ring that hinders the connection between the first air guide groove and the third air guide groove, no gas can be detected at the other end; and when the seal in the packaging component is missing or damaged, the first air guide groove is connected to the third air guide groove. At this time, when the first air guide groove or the third air guide groove is inflated, gas can be detected at the other end. Therefore, the detection method can effectively detect whether there is a missing seal or a damaged seal in the packaging component.
[0024] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1An exploded view of a packaging component in an embodiment of the present invention from a first perspective; Figure 2 is a three-dimensional diagram of an insulating member of a packaging assembly in one embodiment of the present invention; Figure 3 An exploded view of a packaging component in an embodiment of the present invention from a second perspective; Figure 4 is a cross-sectional view of a packaging component in one embodiment of the present invention; Figure 5 for Figure 4 A magnified image of area A; Figure 6 is a three-dimensional diagram of a cover plate of a packaging assembly in one embodiment of the present invention; Figure 7 A bottom view of a cover plate of a packaging assembly in one embodiment of the present invention; Figure 8 is a top view of a packaging component in one embodiment of the present invention; Fig. 9 for Figure 8 Magnified view of area B.
[0026] Figure markings: packaging component 100, cover plate 101, insulating member 102, connecting member 103, sealing member 104, first mounting hole 105, second mounting hole 106, pole 107, first sealing ring 108, second sealing ring 109, connecting shaft 110, abutment portion 111, second air guide groove 201, third air guide groove 202, outer surface 203, main body portion 301, extension portion 302, first air guide groove 303, placement groove 304, collecting plate 305, middle surface 401. DETAILED DESCRIPTION
[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0028] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0029] In the description of the present invention, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0030] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0031] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.
[0032] refer to Figures 1 to 3According to the first embodiment of the present invention, the packaging component 100 includes a cover plate 101, an insulating member 102, a connecting member 103 and a sealing member 104. The cover plate 101 is provided with a first mounting hole 105 and a first air guide groove 303 that are interconnected. The insulating member 102 is arranged in the first mounting hole 105, and the insulating member 102 is provided with a second mounting hole 106, and the second mounting hole 106 is connected to the first mounting hole 105. The hole wall of the second mounting hole 106 is provided with a second air guide groove 201, and the second air guide groove 201 is connected to the first mounting hole 105. The connecting member 103 is arranged in the second mounting hole 106. The sealing member 104 is arranged in the first mounting hole 105, and the sealing member 104 is used to prevent the first air guide groove 303 and the second air guide groove 201 from being connected to each other. The first mounting hole 105 is connected to the first air guide groove 303, the second mounting hole 106 and the second air guide groove 201, so the first air guide groove 303 is connected to the second air guide groove 201 through the first mounting hole 105. When the sealing member 104 is not missing or damaged, the sealing member 104 prevents the first air guide groove 303 from being connected to the second air guide groove 201. At this time, the air tightness test is normal. When the sealing member 104 is missing or damaged, since the first air guide groove 303 and the second air guide groove 201 do not exist in the prior art, the cover plate 101 of the packaging component 100 and the insulating member When the cover plate 101 and the insulating member 102 are fitted together, a short-term false seal will be formed. When the product is inspected, it is impossible to detect whether the seal 104 is missing or damaged. The packaging component 100 of the embodiment of the present invention is provided with a first air guide groove 303 and a second air guide groove 201 that are interconnected. When the seal 104 is missing or damaged, the gas in the inspection process forms a passage through the first air guide groove 303, the first mounting hole 105 and the second air guide groove 201. The cover plate 101 and the insulating member 102 cannot be completely fitted together to form a false seal, and the missing or damaged seal 104 can be effectively detected.
[0033] In the prior art, when the air tightness test is performed on the packaging component 100, air is ventilated to one side of the cover plate 101, and then whether there is air on the other side is checked. Since the cover plate 101, the insulating member 102, and the connecting member 103 are tightly fitted, even if there is no seal 104, it will be detected that there is no air on the other side of the cover plate 101. Therefore, there may actually be a situation where there is no seal 104 in the packaging component 100. In the present application, during the air tightness test, air is ventilated to the first air guide groove 303 to detect whether there is air in the second air guide groove 201, or air is ventilated to the second air guide groove 201 to detect whether there is air in the first air guide groove 303. If there is air, it can be determined that there is a missing situation. When there is a missing situation, the seal is supplemented, and the final packaging component 100 has a high yield.
[0034] refer to Figure 4 , Figure 5 and Figure 6In some embodiments of the present invention, the first air guide groove 303 is arranged on the lower surface of the cover plate 101, extending toward the first mounting hole 105, and the second mounting hole 106 is located above the first mounting hole 105, and the hole wall of the second mounting hole 106 is provided with a vertical second air guide groove 201, and when the seal 104 is missing or damaged, the first air guide groove 303 is connected with the second air guide groove 201. Such a design is simple and convenient in structure, and only grooves need to be provided on the surfaces of the two components to improve the detection effect, without the need to provide more components. In some embodiments of the present invention, the first air guide groove 303 and the second air guide groove 201 can also be provided in other positions or shapes, so that when the seal 104 is missing or damaged, the first air guide groove 303 is connected with the second air guide groove 201, and no false seal is formed in the packaging component 100.
[0035] refer to Figure 1 and Figure 2 In some embodiments of the present invention, the insulating member 102 has an outer surface 203 disposed opposite to the cover plate 101, and the outer surface 203 is provided with a third air guide groove 202, and the third air guide groove 202 is connected to the second air guide groove 201. The third air guide groove 202 is connected to the second air guide groove 201, which can better connect the second air guide groove 201 with the outside world, and facilitate the gas on both sides of the cover plate 101 to be better connected during detection, thereby improving the detection quality. Secondly, the third air guide groove 202 is also provided so that when other components are placed on the outer surface 203, the gas circulation will not be affected. It should be noted that, referring to Figure 2 and Figure 3 In some embodiments of the present invention, the first air guide groove 303, the second air guide groove 201 and the third air guide groove 202 are preferably designed to be straight lines and have rectangular cross-sections. Such a design can facilitate processing and size control and design. They can also be designed into ring-shaped or curved shapes according to usage requirements. The cross-sections can also be designed into arc shapes, etc., so that the three can be connected.
[0036] refer to Figure 1 and Figure 8 In some embodiments of the present invention, the packaging assembly 100 further includes a pole 107, which is connected to the outer surface 203, and the pole 107 covers part of the notch of the third air guide groove 202. In some embodiments of the present invention, the packaging assembly 100 is used as an end cover of a battery, so the pole 107 can connect the internal battery cell and the external circuit of the battery, and play a bridge role. At the same time, the pole 107 and the cover plate 101 are isolated by the insulating member 102 to prevent short circuit. The pole 107 covers part of the notch of the third air guide groove 202, so that the pole 107 does not completely cover the third air guide groove 202 to affect the detection effect.
[0037] refer to Figure 1 and Figure 3In some embodiments of the present invention, the cover plate 101 is provided with a placement groove 304, and the placement groove 304 is connected to the first air guide groove 303 and the first mounting hole 105. The sealing member 104 includes a first sealing ring 108 and a second sealing ring 109 connected to each other, and the second sealing ring 109 protrudes radially relative to the first sealing ring 108. The first sealing ring 108 is arranged in the first mounting hole 105, and the second sealing ring 109 is arranged in the placement groove 304. Providing a placement groove 304 can make the overall structure tighter and reduce the overall size increased after the seal 104 is installed. The placement groove 304 is designed to be connected with the first air guide groove 303 and the first installation hole 105 so that the placement groove 304 will not affect the detection of the seal 104. The second sealing ring 109 of the seal 104 protrudes radially relative to the first sealing ring 108 to form a stepped structure. After the seal 104 is installed, the gas in the first air guide groove 303 is less likely to penetrate through the seal 104 and reach the second air guide groove 201, thereby improving the sealing performance of the seal 104.
[0038] refer to Figure 4 , Figure 5 , Figure 7 and Figure 8 In some embodiments of the present invention, an intermediate surface 401 is defined, and the intermediate surface 401 divides the second mounting hole 106 into a first part and a second part along the center of the second mounting hole 106, and the first gas guide groove 303 and the second gas guide groove 201 are both located on the same side of the intermediate surface 401. Such a design can make the distance between the first gas guide groove 303 and the second gas guide groove 201 as close as possible, so that the ventilation efficiency can be faster during gas detection, and the detection quality is improved. Preferably, in some embodiments of the present invention, the central axis of the first gas guide groove 303 and the second gas guide groove 201 are arranged to overlap, so that the distance between the two is minimized, thereby maximizing the ventilation efficiency. It should be noted that, referring to Figure 7 In some embodiments of the present invention, the first air guide groove 303 and the second air guide groove 201, the third air guide groove 202, etc. can be provided with multiple groups, so as to improve the ventilation volume and ventilation efficiency, and improve the detection quality. Preferably, it can be arranged as follows Figure 7 The two symmetrical groups shown can meet the requirements of more ventilation while not affecting the sealing effect of the seal 104. The processing difficulty of the two groups is also lower than that of more groups.
[0039] refer to Figure 1 , Figure 3 and Figure 4In some embodiments of the present invention, the connector 103 includes an abutment portion 111 and a connecting shaft 110 that are connected to each other. The connecting shaft 110 passes through the first mounting hole 105 and the second mounting hole 106. The abutment portion 111 abuts against the cover plate 101. The first air guide groove 303 is provided on a side surface of the cover plate 101 facing the abutment portion 111. The abutment portion 111 covers part of the notch of the first air guide groove 303. The abutment portion 111 covers part of the notch of the first air guide groove 303 so that the first air guide groove 303 is still partially connected to the outside world, thereby preventing the abutment portion 111 from completely covering the first air guide groove 303 and thus affecting the detection quality. At the same time, the abutment portion 111 also serves to limit the movement of the cover plate 101 and improve the stability. It should be noted that, referring to Figure 1 and Figure 4 In some embodiments of the present invention, the connector 103 is a rivet, and the cover plate 101, the seal 104, the insulating member 102, the pole 107 and other components are riveted together by rivets, which can improve the stability of the overall structure. At the same time, riveting has the advantages of simple process, convenient processing, and strong connection strength. In some embodiments of the present invention, the packaging assembly 100 can also be used as an end cover of other components that need to be sealed, and the connector 103 can also be used as a component in bolt connection, connecting rod welding and other methods.
[0040] refer to Figure 1 and Figure 3 In some embodiments of the present invention, the insulating member 102 includes a main body portion 301 and an extension portion 302, the extension portion 302 extends relative to the main body portion 301, the cover plate 101 is provided with a limiting groove, the extension portion 302 is placed in the limiting groove, and the groove wall of the limiting groove abuts against the extension portion 302 to limit the extension portion 302 from rotating along its own axis. The design of the limiting groove and the extension portion 302 can, on the one hand, make the process of installing the insulating member 102 on the cover plate 101 simpler, that is, just put the extension portion 302 into the limiting groove and then connect it with the connecting member 103. Secondly, it can also reduce the increase in the overall size after the insulating member 102 is installed, making the structure more compact. Designing the groove wall of the limiting groove to be non-circular can also reduce the rotation of the insulating member 102 after installation and improve stability. Reference Figure 1 and Figure 3 Preferably, the shape of the extension portion 302 is designed to be a symmetrical cross with protrusions on four sides. In some embodiments of the present invention, it can also be designed to be a rectangle or other irregular shapes, so as to achieve the matching of the size of the extension portion 302 and the limiting groove and to limit the rotation of the extension portion 302 itself.
[0041] refer to Figure 4 , Figure 5 and Figure 7In some embodiments of the present invention, the first air guide groove 303 extends radially along the first mounting hole 105, the width of the first air guide groove 303 is D1mm, the diameter of the first mounting hole 105 is D2mm, 0.05mm<D1<0.5D2, and / or, the depth of the first air guide groove 303 is D3mm, 0.05mm≤D3<3mm. Designing to a suitable size can meet the dual requirements of air tightness after the seal 104 is installed and gas flowability after the seal 104 is missing. Specifically, D3 can be 0.05mm, 1mm or 2mm. When D1≤0.05mm, the width of the first air guide groove 303 is too small, the ventilation volume is too small, and the detection quality is low. When D1≥0.5D2, that is, the width of the first air guide groove 303 is greater than or equal to the radius of the first mounting hole 105, the width of the first air guide groove 303 is too large, the connecting piece 103 may become loose after installation, the structural stability is reduced, and the sealing effect of the seal 104 will also be reduced. When D3 is less than 0.05 mm, the depth of the first air guide groove 303 is too small, and the ventilation volume and detection quality will also be too low. When D3 is greater than 3 mm, the depth is too large. On the one hand, the overall size of the cover plate 101 provided with the first air guide groove 303 will be too large. On the other hand, it will also reduce the sealing effect of the seal 104. The seal 104 also needs to be made larger in size accordingly, which does not meet the miniaturization requirements. It should be noted that in some embodiments of the present invention, the width of the second air guide groove 201 and the third air guide groove 202 also need to meet the above-mentioned width and depth requirements to achieve the best use effect. Preferably, in some embodiments of the present invention, the width D1 of the first air guide groove 303 is 1 mm, the depth D3 of the first air guide groove 303 is 0.5 mm, the second air guide groove 201 and the third air guide groove 202 are of the same size, the width is 1 mm, and the depth is preferably less than 0.5 mm.
[0042] refer to Figure 6 , Figure 8 and Fig. 9 In some embodiments of the present invention, the second air guide groove 201 extends along the axial direction of the second mounting hole 106, the width of the second air guide groove 201 is D4mm, the diameter of the second mounting hole 106 is D5mm, and 0.05mm<D4<0.5D5. Designing to a suitable size can meet the dual requirements of air tightness after the seal 104 is installed and gas flowability after the seal 104 is missing. When D4≤0.05mm, the width of the second air guide groove 201 is too small, the ventilation volume is too small, and the detection quality is low. When D4≥0.5D5, that is, the width of the second air guide groove 201 is greater than or equal to the radius of the second mounting hole 106, the width of the second air guide groove 201 is too large, the connector 103 may become loose after installation, the structural stability is reduced, and the sealing effect of the seal 104 is also reduced.
[0043] refer to Figure 4and Figure 5 In some embodiments of the present invention, the first air guide groove 303 extends along the radial direction of the first mounting hole 105, the length of the first air guide groove 303 is Lmm, the end surface diameter of the connector 103 close to the first air guide groove 303 is L1mm, the end surface diameter of the sealing member 104 close to the first air guide groove 303 is L2mm, and L>(L1-L2) / 2. Such a design can ensure that the first air guide groove 303 can be exposed relative to the connector 103 to achieve a ventilation effect. If L≤(L1-L2) / 2, it will be blocked by the connector 103 and cannot achieve a ventilation effect.
[0044] The battery according to the embodiment of the second aspect of the present invention includes the packaging component 100 of any one of the embodiments of the present invention. The packaging component 100 of the embodiment of the present invention is provided with a first air guide groove 303 and a second air guide groove 201 that are interconnected, so that when the seal 104 is missing or damaged, the gas in the detection process forms a passage through the first air guide groove 303, the first mounting hole 105 and the second air guide groove 201, and the cover plate 101 and the insulating member 102 cannot be completely fitted to form a false seal, so that the missing or damaged seal 104 can be effectively detected. Therefore, the battery with the packaging component 100 can effectively detect the missing or damaged seal 104, thereby effectively avoiding leakage and the like, which can improve the yield of the battery. It should be noted that, referring to Figure 3 In some embodiments of the present invention, the packaging component 100 used in the battery is also provided with a current collecting plate 305, which is installed at the bottom of the cover plate 101. The current collecting plate 305 is used to connect the battery cell with the external circuit. By being arranged on the packaging component 100, the current can be transmitted smoothly.
[0045] According to the detection method of the third aspect of the present invention, the sealing member 104 of the packaging component 100 is used to detect the sealing member 104 of the packaging component 100, and the packaging component 100 includes a cover plate 101, an insulating member 102 and a connecting member 103. The cover plate 101 is provided with a first mounting hole 105 and a first air guide groove 303 that are connected to each other. The insulating member 102 is arranged in the first mounting hole 105, and the insulating member 102 is provided with a second mounting hole 106, and the second mounting hole 106 is connected to the first mounting hole 105. The hole wall of the second mounting hole 106 is provided with a second air guide groove 201, and the second air guide groove 201 is connected to the first mounting hole 105. The connecting member 103 is arranged in the second mounting hole 106. The detection method includes the following steps: inflating the first air guide groove 303, and detecting whether there is gas at the second air guide groove 201, and judging whether the sealing member 104 is missing or damaged according to the detection result of the gas at the second air guide groove 201. Alternatively, the second gas guide groove 201 is inflated, and it is determined whether there is gas in the first gas guide groove 303, and whether the seal 104 is missing or damaged is determined based on the detection result of the gas at the first gas guide groove 303. The specific test process is as follows: the first gas guide groove 303 is inflated, and if no gas is detected at the second gas guide groove 201, it means that there is a sealing ring that prevents the first gas guide groove 303 and the second gas guide groove 201 from being connected, so there is no missing or damaged seal 104 in the packaging component 100, and the packaging component 100 is normal. If gas is detected at the second gas guide groove 201, it means that the first gas guide groove 303 is connected with the second gas guide groove 201, and the seal 104 is missing or damaged in the packaging component 100. At this time, the seal 104 can be supplemented, so that the yield of the packaging component 100 is improved. Similarly, when the second air guide groove 201 is inflated, if no gas is detected at the first air guide groove 303, it means that there is a sealing ring that hinders the connection between the first air guide groove 303 and the second air guide groove 201. Therefore, there is no missing or damaged seal 104 in the packaging component 100, and the packaging component 100 is normal. If gas is detected at the first air guide groove 303, it means that the first air guide groove 303 is connected with the second air guide groove 201, and the seal 104 is missing or damaged in the packaging component 100. At this time, the seal 104 can be supplemented, so that the yield of the packaging component 100 is improved.
[0046] Therefore, the detection method can effectively detect whether the seal 104 is missing or damaged in the packaging component 100 .
[0047] According to the detection method of the third embodiment of the present invention, it is used to detect the sealing member 104 of the packaging component 100, and the packaging component 100 includes a cover plate 101, an insulating member 102 and a connecting member 103. The cover plate 101 is provided with a first mounting hole 105 and a first air guide groove 303 that are connected to each other. The insulating member 102 is arranged in the first mounting hole 105, and the insulating member 102 is provided with a second mounting hole 106, and the second mounting hole 106 is connected to the first mounting hole 105. The hole wall of the second mounting hole 106 is provided with a second air guide groove 201, and the second air guide groove 201 is connected to the first mounting hole 105. The insulating member 102 has an outer surface 203 that is arranged opposite to the cover plate 101, and the outer surface 203 is provided with a third air guide groove 202, and the third air guide groove 202 is connected to the second air guide groove 201. The connecting member 103 is arranged in the second mounting hole 106.
[0048] The detection method comprises the following steps: inflating the first gas guide groove 303, detecting whether there is gas at the third gas guide groove 202, and judging whether the sealing member 104 is missing or damaged according to the detection result of the gas at the third gas guide groove 202. Alternatively, inflating the third gas guide groove 202, and judging whether there is gas in the first gas guide groove 303, and judging whether the sealing member 104 is missing or damaged according to the detection result of the gas at the first gas guide groove 303.
[0049] According to the detection method of the embodiment of the present invention, there are at least the following beneficial effects: the first air guide groove 303, the second air guide groove 201 and the third air guide groove 202 are connected to each other. When there is no missing or damaged seal 104 in the packaging component 100, the first air guide groove 303 or the third air guide groove 202 is inflated. Since there is a sealing ring that hinders the connection between the first air guide groove 303 and the third air guide groove 202, no gas can be detected at the other end; and when the seal 104 in the packaging component 100 is missing or damaged, the first air guide groove 303 is connected to the third air guide groove 202. At this time, the first air guide groove 303 or the third air guide groove 202 is inflated, and gas can be detected at the other end. Therefore, the detection method can effectively detect whether the seal 104 is missing or damaged in the packaging component 100.
[0050] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present invention. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.
Claims
1. A packaging component, characterized in that include: The cover plate is provided with a first mounting hole and a first air guide groove which are interconnected; An insulating member, arranged in the first mounting hole, the insulating member is provided with a second mounting hole, the second mounting hole is communicated with the first mounting hole, a hole wall of the second mounting hole is provided with a second air guide groove, the second air guide groove is communicated with the first mounting hole; A connecting member, disposed in the second mounting hole; A sealing member is disposed in the first mounting hole, and is used to prevent the first air guide groove and the second air guide groove from being connected to each other.
2. The packaging assembly according to claim 1, characterized in that: The insulating member has an outer surface disposed opposite to the cover plate, the outer surface is provided with a third air guide groove, and the third air guide groove is communicated with the second air guide groove.
3. The packaging assembly according to claim 2, characterized in that: The packaging component also includes a pole connected to the outer surface, and the pole covers a portion of the slot of the third air guide slot.
4. The packaging assembly according to claim 1, characterized in that: The cover plate is provided with placement grooves, and the placement grooves are connected to the first air guide groove and the first mounting hole. The sealing member includes a first sealing ring and a second sealing ring which are connected to each other, and the second sealing ring protrudes radially relative to the first sealing ring. The first sealing ring is arranged in the first mounting hole, and the second sealing ring is arranged in the placement groove.
5. The packaging assembly according to claim 1, characterized in that: A middle surface is defined, and the middle surface divides the second mounting hole into a first part and a second part along the center of the second mounting hole, and the first air guide groove and the second air guide groove are both located on the same side of the middle surface.
6. The packaging assembly according to claim 1, characterized in that: The connecting member includes an abutment portion and a connecting shaft that are connected to each other, the connecting shaft passes through the first mounting hole and the second mounting hole, the abutment portion abuts against the cover plate, the first air guide groove is arranged on a side surface of the cover plate facing the abutment portion, and the abutment portion covers a portion of the notch of the first air guide groove.
7. The packaging assembly according to claim 1, characterized in that: The insulating member includes a main body and a protruding portion, wherein the protruding portion protrudes relative to the main body, the cover plate is provided with a limiting groove, the protruding portion is placed in the limiting groove, and the groove wall of the limiting groove abuts against the protruding portion to limit the protruding portion from rotating along its own axis.
8. The packaging assembly according to claim 1, characterized in that: The first air guide groove extends along the radial direction of the first mounting hole, the width of the first air guide groove is D1 mm, the diameter of the first mounting hole is D2 mm, and 0.05 mm<D1<0.5D2; and / or, The depth of the first air guide groove is D3 mm, 0.05 mm ≤ D3 < 3 mm.
9. The packaging assembly according to claim 1, characterized in that: The second air guiding groove extends along the axial direction of the second mounting hole, the width of the second air guiding groove is D4 mm, the diameter of the second mounting hole is D5 mm, and 0.05 mm<D4<0.5D5.
10. The packaging assembly according to claim 1, characterized in that: The first air guide groove extends radially along the first mounting hole, the length of the first air guide groove is Lmm, the end surface diameter of the connecting member close to the first air guide groove is L1mm, the end surface diameter of the sealing member close to the first air guide groove is L2mm, and L>(L1-L2) / 2.
11. A battery, characterized in that The battery comprises the packaging assembly according to any one of claims 1 to 10.
12. A detection method, characterized in that: A seal for detecting a packaging assembly, the packaging assembly comprising: The cover plate is provided with a first mounting hole and a first air guide groove which are interconnected; An insulating member, arranged in the first mounting hole, the insulating member is provided with a second mounting hole, the second mounting hole is communicated with the first mounting hole, a hole wall of the second mounting hole is provided with a second air guide groove, the second air guide groove is communicated with the first mounting hole; A connecting member, disposed in the second mounting hole; The detection method comprises the following steps: Inflate the first air guide groove, and detect whether there is gas in the second air guide groove; judging whether the sealing element is missing or damaged according to the detection result of the gas at the second gas guide groove; or, Inflate the second gas guide groove, and determine whether there is gas in the first gas guide groove; Whether the sealing component is missing or damaged is determined based on the detection result of the gas at the first gas guide groove.
13. A detection method, characterized in that A seal for detecting a packaging assembly, the packaging assembly comprising: The cover plate is provided with a first mounting hole and a first air guide groove which are interconnected; an insulating member, arranged in the first mounting hole, the insulating member being provided with a second mounting hole, the second mounting hole being communicated with the first mounting hole, a hole wall of the second mounting hole being provided with a second air guide groove, the second air guide groove being communicated with the first mounting hole, the insulating member having an outer surface arranged opposite to the cover plate, the outer surface being provided with a third air guide groove, the third air guide groove being communicated with the second air guide groove; A connecting member, disposed in the second mounting hole; The detection method comprises the following steps: Inflate the first air guide groove, and detect whether there is gas in the third air guide groove; According to the detection result of the gas at the third gas guide groove, judging whether the sealing element is missing or damaged; or, Inflate the third gas guide groove, and determine whether there is gas in the first gas guide groove; Whether the sealing component is missing or damaged is determined based on the detection result of the gas at the first gas guide groove.