Battery monomer, battery device and electric equipment

Abstract

The utility model relates to a battery monomer, a battery device and electric equipment, and the battery monomer comprises a shell which is internally provided with a containing cavity and is provided with an air injection hole communicated with the containing cavity; the solid-state electrode assembly is arranged in the accommodating cavity; and the sealing assembly is detachably and hermetically arranged in the gas injection hole. According to the application, firstly, the gas injection hole communicated with the accommodating cavity is formed in the shell, the tracer gas can be injected into the accommodating cavity through the gas injection hole, and then the gas injection hole is sealed through the sealing assembly, so that the content of the tracer gas in the environment can be detected in time in the recycling process of the battery monomer; therefore, the leakage condition of the single battery is reflected more accurately, and the efficiency and precision of air tightness detection are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery monomer, a battery device and an electric equipment. BACKGROUND

[0002] During the cycle use of the solid-state battery monomer, leakage may occur, affecting the use performance of the battery as a whole. However, for the solid-state battery monomer, it is difficult to detect the air tightness, and it is not convenient to monitor the leakage in the use process in a timely manner, affecting the use performance of the solid-state battery monomer. CONTENT OF THE UTILITY MODEL

[0003] Therefore, it is necessary to provide a battery monomer, a battery device and an electric equipment in view of the problem that it is difficult to detect the air tightness of the solid-state battery monomer.

[0004] In a first aspect, the present application provides a battery monomer, comprising a shell, a solid-state electrode assembly and a sealing assembly, the shell has a containing cavity in the inside, and a gas injection hole is formed in the shell and communicates with the containing cavity; the solid-state electrode assembly is arranged in the containing cavity; and the sealing assembly is detachably and sealingly arranged in the gas injection hole.

[0005] Therefore, the tracer gas can be injected into the containing cavity through the gas injection hole, and then the gas injection hole is sealed by the sealing assembly. In this way, the content of the tracer gas in the environment can be detected in a timely manner during the cycle use of the battery monomer, so as to more accurately reflect the leakage of the battery monomer and improve the efficiency and accuracy of the air tightness detection.

[0006] In some embodiments, the battery monomer further comprises a connecting portion surrounding the periphery of the gas injection hole, the connecting portion is integrally formed with the shell and is used for connecting with the sealing assembly.

[0007] Therefore, the connecting portion is integrally formed with the shell, which can ensure the sealing connection between the connecting portion and the shell, and the connecting portion can be used for connecting with the sealing assembly, providing a connection basis, so that the sealing assembly can more stably seal the gas injection hole.

[0008] In some embodiments, the sealing assembly comprises a first sealing member and a second sealing member, a connecting channel is formed through the first sealing member, the first sealing member is sealingly connected with the connecting portion, and one end of the connecting channel communicates with the gas injection hole; and the second sealing member is sealingly arranged at the other end of the connecting channel away from the gas injection hole.

[0009] Through the above structure, the sealing connection between the sealing assembly and the connecting portion can be realized, and the sealing of the gas injection hole can be realized, thereby improving the sealing stability of the battery monomer.

[0010] In some embodiments, the materials of the first sealing member and the second sealing member are different, and the hardness of the first sealing member is greater than that of the second sealing member.

[0011] Thus, the composite structure of the three different materials formed among the connecting portion, the first sealing member and the second sealing member can improve the sealing effect; in addition, the first sealing member can be more stably and sealingly connected with the connecting portion, and the second sealing member can be blocked in the connecting channel, thereby realizing good sealing of the gas injection hole.

[0012] In some embodiments, the material of the first sealing member includes one of plastic, polyether ether ketone, polyimide, polytetrafluoroethylene, polyethylene terephthalate; and / or, the material of the second sealing member includes one of rubber, polyimide, polytetrafluoroethylene, polyvinyl chloride, polypropylene, polyethylene.

[0013] Through the above structure, the composite structure of metal and plastic is formed between the connecting portion, so that the battery monomer has high sealing performance and improves the sealing stability of the battery monomer.

[0014] In some embodiments, the first sealing member includes a first body and a baffle grid arranged integrally, the connecting channel is arranged on the first body, the first body is sealingly connected with the connecting portion, and the baffle grid is arranged around the outer periphery of the first body and the connecting portion.

[0015] In this way, when the tracer gas is injected into the accommodation cavity through the connecting channel and the gas injection hole, the baffle grid can shield the gas and prevent the injected gas from washing the battery monomer.

[0016] In some embodiments, the second sealing member includes a second body and a stopper connected to one end of the second body, the diameter of the second body is not less than the inner diameter of the connecting channel, and the diameter of the stopper is greater than the diameter of the second body, so that when the one end of the second body away from the stopper is inserted into the connecting channel, the stopper can abut against the first sealing member.

[0017] Through the above structure, the second body can be interference-fitted with the channel wall of the connecting channel, and is more stably blocked in the connecting channel, thereby improving the sealing performance; at the same time, the stopper can limit the position of the second body in the connecting channel, so that the second sealing member can be stably blocked in the connecting channel.

[0018] In some embodiments, the second sealing member further includes an elastic sealing portion, the elastic sealing portion is connected to the one end of the second body away from the stopper and is arranged around the outer periphery of the second body.

[0019] Thus, the elastic sealing portion is arranged around the outer periphery of the second body, and when the second body is inserted into the connecting channel, the elastic sealing portion can be elastically deformed and filled between the second body and the channel wall of the connecting channel, thereby further improving the sealing performance.

[0020] In some embodiments, the elastic sealing part comprises a first end connected with the second body and a second end away from the second body, and the diameter of the elastic sealing part gradually decreases from the first end to the second end along the axial direction of the connecting channel; wherein the diameter of the first end is greater than the diameter of the second body.

[0021] Through the above structure, the second body can be more smoothly inserted into the connecting channel during the process of inserting the second body into the connecting channel; at the same time, the first end can also compress the filling between the second body and the channel wall of the connecting channel, thereby improving the sealing effect.

[0022] In a second aspect, the application further provides a battery device comprising the battery cell as described above, wherein the battery cell is a solid-state battery cell.

[0023] In a third aspect, the application further provides a power-consuming device comprising the battery device as described above.

[0024] The above battery cell, battery device and power-consuming device first open the gas injection hole communicating with the accommodating cavity on the shell, can inject tracer gas into the accommodating cavity through the gas injection hole, and then seal the gas injection hole through the sealing assembly. In this way, the battery cell can detect the content of the tracer gas in the environment in a timely manner during the recycling process, so as to more accurately reflect the leakage of the battery cell and improve the efficiency and accuracy of the air tightness detection. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 FIG. 1 is a structural schematic diagram of a battery cell according to one or more embodiments.

[0026] Figure 2 FIG. 2 is a structural schematic diagram of a sealing assembly in a battery cell according to one or more embodiments.

[0027] Figure 3 FIG. 3 is a structural schematic diagram of a second sealing member in a battery cell according to one or more embodiments.

[0028] Figure 4 FIG. 4 is a structural schematic diagram of a glue pressing nail device and a battery cell according to one or more embodiments.

[0029] Explanation of reference signs: 100, battery cell; 200, glue pressing nail device; 201, third main body; 202, sealing nozzle; 203, first channel; 204, first branch; 205, second branch; 206, second channel; 207, third channel; 208, pressing rod; 10, shell; 20, sealing assembly; 30, connecting part; 11, gas injection hole; 21, first sealing element; 22, second sealing element; 23, connecting channel; 211, first main body; 212, baffle grid; 221, second main body; 222, stop portion; 223, elastic sealing portion; 224, first end; 225, second end; a, axial direction. DETAILED DESCRIPTION

[0030] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described herein and by one of ordinary skill in the art without departing from the spirit and scope of the present application, and it is therefore intended that all such variations be considered as falling within the scope of the present application. It should be noted that the following detailed description is intended only to be illustrative and not restrictive.

[0031] In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0032] In addition, if the terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In the present application, unless specifically defined otherwise, if there is a description of a first feature "on" or "under" a second feature, it can mean that the first and second features are directly in contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "over", "above" and "on top of" the second feature can mean that the first feature is directly above or obliquely above the second feature, or only means that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "underneath" the second feature can mean that the first feature is directly below or obliquely below the second feature, or only means that the first feature is lower in horizontal height than the second feature.

[0034] In the present application, unless specifically defined otherwise, if there is a description of a first feature "on" or "under" a second feature, it can mean that the first and second features are directly in contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "over", "above" and "on top of" the second feature can mean that the first feature is directly above or obliquely above the second feature, or only means that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "underneath" the second feature can mean that the first feature is directly below or obliquely below the second feature, or only means that the first feature is lower in horizontal height than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or there can be an intermediate element. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intermediate element. If present, the terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions used in the present application are for illustrative purposes only and do not represent the only implementation.

[0036] At present, from the development of market situation, the application of battery is more and more extensive. The battery is not only applied to the energy storage power system of hydropower, thermal power, wind power and solar power station, but also widely applied to electric bicycles, electric motorcycles, electric vehicles and other electric vehicles and other fields. With the continuous expansion of the application field of battery, the demand of its market is also increasing.

[0037] The traditional battery monomer usually includes a shell and an electrode assembly arranged in the shell. The shell is wrapped outside the electrode assembly, and an electrolyte is filled in the shell, so that the electrode assembly can be fully soaked in the electrolyte.

[0038] Compared with the traditional battery monomer, the electrolyte in the solid-state battery monomer is replaced by a solid-state electrolyte layer, and the electrolyte layer is clamped between the positive and negative electrode sheets. The solid-state battery monomer has higher safety and higher energy density, so it has been more and more widely used.

[0039] For the solid-state battery cell, the positive electrode sheet, the electrolyte layer and the negative electrode sheet are sequentially stacked to form a solid-state electrode assembly. That is, the electrolyte layer and the positive and negative electrode sheets are in surface contact in a solid-solid manner.

[0040] The solid-state battery cell may leak during the recycling process, but the air tightness detection of the solid-state battery cell is difficult. When using sulfide electrolyte, when leakage occurs, the sulfide electrolyte will produce hydrogen sulfide after contacting with air, and the leakage can be judged by detecting the content of hydrogen sulfide. However, hydrogen sulfide is a toxic gas, so the operation difficulty of this detection method is large.

[0041] When the electrolyte is oxide or halide, the gas generated when leakage occurs is not convenient to be detected, so that the actual leakage condition cannot be judged.

[0042] Therefore, for the solid-state battery cell, the operation difficulty of air tightness detection is large, and the leakage condition during the recycling process cannot be detected in time, which affects the use performance of the solid-state battery cell.

[0043] Based on the above consideration, in order to solve the problem that the air tightness detection of the solid-state battery cell is difficult, one or more embodiments of the present application provide a battery cell. First, a gas injection hole communicating with the containing cavity is formed on the shell, the tracer gas can be injected into the containing cavity through the gas injection hole, and then the gas injection hole is sealed by the sealing assembly. In this way, during the recycling process of the battery cell, the content of the tracer gas in the environment can be detected in time, so that the leakage condition of the battery cell can be more accurately reflected, and the efficiency and accuracy of the air tightness detection are improved.

[0044] It should be noted that the battery device (Battery Apparatus) mentioned in the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly (Battery Cell Assembly) can include a plurality of battery cells connected in series, parallel or mixed connection through a busbar component.

[0045] In some embodiments, the battery cell assembly (Battery Cell Assembly) is usually formed by arranging a plurality of battery cells. As an example, the battery cell assembly can be a battery module (Battery Module), and the battery module is formed by arranging and fixing a plurality of battery cells into an independent module. As an example, the battery module can be formed by bundling a plurality of battery cells with a cable tie.

[0046] In some embodiments, the battery device can be a battery pack (battery Pack), and the battery pack includes a box body and one or more battery cell assemblies, and the battery cell assemblies are contained in the box body.

[0047] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be accommodated in the case by fixing the battery module in the case.

[0048] As an example, the battery cell assembly can also be accommodated in the case by fixing a plurality of battery cells directly to the case.

[0049] Referring to Figure 1 and FIG. 1, an embodiment of the present application provides a battery cell 100 including a housing 10, a solid-state electrode assembly (not shown in the figure), and a sealing assembly 20. The housing 10 has an accommodation cavity (not shown in the figure) in the interior thereof, and the housing 10 is provided with a gas injection hole 11 that is in communication with the accommodation cavity. The solid-state electrode assembly is arranged in the accommodation cavity, and the sealing assembly 20 is detachably and sealingly arranged in the gas injection hole 11.

[0050] It should be noted that the battery cell 100 is the smallest unit that constitutes a battery device, and the battery cell 100 generally includes the housing 10, the solid-state electrode assembly, and the sealing assembly 20. The interior of the housing 10 is hollow to form an accommodation cavity. The solid-state electrode assembly is arranged in the accommodation cavity, and the solid-state electrode assembly can be protected by the housing 10.

[0051] The housing 10 generally includes a shell and a top cover. One end of the shell is open, and the top cover is sealingly arranged on the opening of the shell. Thus, the top cover and the shell jointly enclose the accommodation cavity.

[0052] The solid-state electrode assembly refers to a structure in which a positive electrode sheet, an electrolyte layer, and a negative electrode sheet are all solid and are arranged in layers one after another. Thus, the above-mentioned battery cell 100 is a solid-state battery cell 100. After the solid-state electrode assembly is arranged in layers, the housing 10 can be wrapped around the outer periphery of the solid-state electrode assembly to assemble the solid-state battery cell 100. That is, for the solid-state battery cell 100, it is not necessary to inject electrolyte into the shell, and it is not necessary to provide a liquid injection hole on the housing 10.

[0053] Under such a premise, after the solid-state electrode assembly and the housing 10 jointly assemble the solid-state battery cell 100, it is inconvenient to detect the air tightness of the solid-state battery cell 100, and it is not possible to timely monitor the leakage of the solid-state battery cell 100.

[0054] Based on this, the application opens a gas injection hole 11 on the shell 10, and the gas injection hole 11 is in communication with the containing cavity. After the solid electrode assembly is arranged in the containing cavity, the containing cavity can be repeatedly subjected to vacuumizing treatment and filling of tracer gas through the gas injection hole 11, so that the tracer gas fills the containing cavity. Then, the gas injection hole 11 is sealed by the sealing assembly 20. When the battery monomer 100 leaks, the tracer gas in the containing cavity is discharged into the environment. For example, the battery monomer 100 is usually arranged in a box, and a plurality of battery monomers 100 are arranged in the box to jointly form a battery device. At this time, the internal environment of the box can be detected, and when the content of the tracer gas in the box exceeds the standard, it indicates that there is a leakage of the battery monomer 100, and the battery monomer 100 can be processed in time to reduce the risk of heat runaway and other problems.

[0055] Further, the sealing assembly 20 refers to a structure capable of sealing the gas injection hole 11 to maintain a sealed environment in the containing cavity. First, the sealing assembly 20 is detachably arranged in the gas injection hole 11, which can realize the opening and closing of the gas injection hole 11 to facilitate the injection of tracer gas into the containing cavity through the gas injection hole 11. In addition, when the sealing assembly 20 is arranged in the gas injection hole 11, the sealing assembly 20 can seal the gas injection hole 11 to maintain a sealed state in the containing cavity, thereby providing a good working environment for the solid electrode assembly.

[0056] Therefore, the tracer gas can be injected into the containing cavity through the gas injection hole 11, and then the gas injection hole 11 is sealed by the sealing assembly 20. In this way, the content of the tracer gas in the environment can be detected in time during the cyclic use of the battery monomer 100, so that the leakage of the battery monomer 100 can be more accurately reflected, and the efficiency and accuracy of the air tightness detection are improved.

[0057] In some embodiments, the battery monomer 100 further comprises a connecting portion 30 surrounding the outer periphery of the gas injection hole 11, and the connecting portion 30 is integrally formed with the shell 10 and is used to connect with the sealing assembly 20.

[0058] Specifically, the gas injection hole 11 can be opened on the top cover, or on the side or bottom surface of the shell. In order to facilitate understanding, the case where the gas injection hole 11 is opened on the top cover is taken as an example for description.

[0059] When the gas injection hole 11 is opened on the top cover, the connecting portion 30 surrounds the outer periphery of the gas injection hole 11, and the connecting portion 30 protrudes from the top cover. That is, the connecting portion 30 can form a ring of enclosure around the outer periphery of the gas injection hole 11.

[0060] Further, the connecting portion 30 is integrally formed with the shell 10. The shell 10 is usually made of metal material, and the connecting portion 30 is integrally formed with the shell 10 by using the same material, such as aluminum, stainless steel, etc.

[0061] Thus, the connecting portion 30 is integrally formed with the shell 10, the connection between the connecting portion 30 and the shell 10 is ensured to be sealed, and the connecting portion 30 can be used to connect with the sealing assembly 20, to provide a connection basis, so that the sealing assembly 20 can seal the gas injection hole 11 more stably.

[0062] In some embodiments, the sealing assembly 20 includes a first sealing member 21 and a second sealing member 22. The first sealing member 21 has a connecting channel 23 passing therethrough. The first sealing member 21 is sealingly connected with the connecting portion 30, and one end of the connecting channel 23 communicates with the gas injection hole 11. The second sealing member 22 is sealingly arranged at the other end of the connecting channel 23 away from the gas injection hole 11.

[0063] Specifically, the first sealing member 21 refers to a component that can be connected between the connecting portion 30 and the second sealing member 22 to achieve stable sealing of the gas injection hole 11. The second sealing member 22 refers to a component that can be blocked in the connecting channel 23 to seal the gas injection hole 11.

[0064] In order to better match the connection with the connecting portion 30, the first sealing member 21 can be provided in a cylindrical structure, and the connecting channel 23 is formed in the middle of the first sealing member 21. The first sealing member 21 is sealingly connected with the connecting portion 30, and the sealing connection can be achieved by using a glue sealing method. At this time, one end of the connecting channel 23 communicates with the gas injection hole 11, and the second sealing member 22 is blocked at the other end of the connecting channel 23, so that the sealing of the gas injection hole 11 can be achieved.

[0065] Through the above structure, the sealing connection between the sealing assembly 20 and the connecting portion 30 can be achieved, and the sealing of the gas injection hole 11 can be achieved, thereby improving the sealing stability of the battery monomer 100.

[0066] In some embodiments, the materials of the first sealing member 21 and the second sealing member 22 are different, and the hardness of the first sealing member 21 is greater than that of the second sealing member 22.

[0067] It should be noted that the connecting portion 30 is integrally formed with the shell 10, that is, the connecting portion 30 is made of a metal material, and has a large rigidity. Thus, by arranging the first sealing member 21 and the second sealing member 22, on the one hand, the first sealing member 21 can be more tightly connected with the connecting portion 30, and on the other hand, the second sealing member 22 can be interference-fitted with the first sealing member 21, thereby improving the sealing stability of the gas injection hole 11.

[0068] Specifically, the materials of the first sealing member 21 and the second sealing member 22 are different, and the hardness of the first sealing member 21 is greater than that of the second sealing member 22. That is, the elasticity of the second sealing member 22 is greater than that of the first sealing member 21.

[0069] Thus, the composite structure of three different materials formed by the connection portion 30, the first sealing member 21 and the second sealing member 22 can improve the sealing effect. In addition, the first sealing member 21 can be more stably and sealingly connected with the connection portion 30, and the second sealing member 22 can be blocked in the connection channel 23, thereby realizing good sealing of the gas injection hole 11.

[0070] In some embodiments, the material of the first sealing member 21 includes one of plastic, polyether ether ketone, polyimide, polytetrafluoroethylene, polyethylene terephthalate. And / or, the material of the second sealing member 22 includes one of rubber, polyimide, polytetrafluoroethylene, polyvinyl chloride, polypropylene, polyethylene.

[0071] Specifically, the first sealing member 21 can be plastic. When the first sealing member 21 is sealingly connected with the connection portion 30, the composite structure of metal and plastic formed between the two has high sealing performance, thereby improving the air tightness of the battery monomer 100.

[0072] Further, the second sealing member 22 can be rubber, specifically fluororubber, which can be more tightly blocked in the connection channel 23 and has high reliability.

[0073] Through the above structure, the composite structure of metal and plastic formed between the connection portion 30 has high sealing performance of the battery monomer 100, thereby improving the sealing stability of the battery monomer 100.

[0074] In some embodiments, the first sealing member 21 includes a first body 211 and a baffle grid 212 arranged integrally, the connection channel 23 is arranged on the first body 211, the first body 211 is sealingly connected with the connection portion 30, and the baffle grid 212 is arranged around the outer periphery of the first body 211 and the connection portion 30.

[0075] Specifically, the first body 211 and the baffle grid 212 are arranged integrally, that is, the first body 211 and the baffle grid 212 can both be made of plastic material, and the baffle grid 212 is connected to the outer periphery of the first body 211.

[0076] The connection channel 23 is arranged on the first body 211, and the first body 211 and the connection portion 30 are sealingly connected by glue sealing. At this time, one end of the connection channel 23 is in communication with the gas injection hole 11.

[0077] When the first body 211 is connected with the connecting portion 30, the baffle grid 212 is arranged around the outer periphery of the first body 211 and the connecting portion 30, and can shield the connection position of the first body 211 and the connecting portion 30. In this way, when the tracer gas is injected into the accommodation cavity through the connecting channel 23 and the gas injection hole 11, the baffle grid 212 can shield the gas and prevent the injected gas from washing the battery monomer 100.

[0078] In some embodiments, the second sealing member 22 comprises a second body 221 and a stop portion 222 connected to one end of the second body 221. The diameter of the second body 221 is not less than the inner diameter of the connecting channel 23, and the diameter of the stop portion 222 is greater than the diameter of the second body 221. When the end of the second body 221 away from the stop portion 222 is inserted into the connecting channel 23, the stop portion 222 can abut against the first sealing member 21.

[0079] Specifically, the second body 221 serves as a plugging body structure. When the second sealing member 22 is used to plug the connecting channel 23, the second body 221 is inserted into the connecting channel 23. Since the diameter of the second body 221 is not less than the inner diameter of the connecting channel 23, and the second sealing member 22 has elasticity, the second body 221 can be in interference fit with the channel wall of the connecting channel 23, so that the second body 221 can seal the connecting channel 23.

[0080] Further, the stop portion 222 is connected to one end of the second body 221. That is, the end of the second body 221 away from the stop portion 222 can be inserted into the connecting channel 23 to play a sealing role, and the end of the second body 221 connected with the stop portion 222 can abut against the first body 211 of the first sealing member 21 along the axial direction a of the connecting channel 23 when the second body 221 is partially inserted into the connecting channel 23. In this way, the stop portion 222 can limit the position of the second body 221 in the connecting channel 23, so that the second sealing member 22 can be stably plugged in the connecting channel 23.

[0081] Through the above structure, the second body 221 can be in interference fit with the channel wall of the connecting channel 23, and be more stably plugged in the connecting channel 23 to improve the sealing performance. At the same time, the stop portion 222 can limit the position of the second body 221 in the connecting channel 23, so that the second sealing member 22 can be stably plugged in the connecting channel 23.

[0082] In some embodiments, the second sealing member 22 further comprises an elastic sealing portion 223 connected to the end of the second body 221 away from the stop portion 222 and arranged around the outer periphery of the second body 221.

[0083] Specifically, the elastic sealing part 223 is connected to the end of the second body 221 away from the stop part 222, that is, the elastic sealing part 223 is connected to the end of the second body 221 located in the connecting channel 23. In addition, the elastic sealing part 223 is disposed around the outer periphery of the second body 221. When the second body 221 is inserted into the connecting channel 23, the elastic sealing part 223 can undergo elastic deformation and fill the gap between the second body 221 and the channel wall of the connecting channel 23, thereby further improving the sealing performance.

[0084] like Figure 3 As shown, in some embodiments, the elastic sealing portion 223 includes a first end 224 connected to the second body 221 and a second end 225 away from the second body 221. Along the axial direction a of the connecting channel 23, the diameter of the elastic sealing portion 223 gradually decreases from the first end 224 to the second end 225. The diameter of the first end 224 is larger than the diameter of the second body 221.

[0085] Specifically, the elastic sealing portion 223 is formed into a conical structure, that is, the diameter of the second end 225 of the elastic sealing portion 223 away from the second body 221 is smaller, and the diameter gradually increases from the second end 225 to the first end 224.

[0086] Thus, during the process of inserting the second body 221 into the connecting channel 23, the elastic sealing part 223 can play a certain guiding role, so that the second body 221 can be inserted into the connecting channel 23 more smoothly.

[0087] Furthermore, the diameter of the first end 224 is larger than the diameter of the second body 221, that is, the first end 224 is arranged around the outer periphery of the second body 221. In this way, during the process of inserting the second body 221 into the connecting channel 23, the first end 224 is gradually compressed and fills the space between the second body 221 and the channel wall of the connecting channel 23, thus playing a sealing role.

[0088] The above structure can guide the second body 221 during insertion into the connecting channel 23, allowing the second body 221 to be inserted into the connecting channel 23 more smoothly; at the same time, the first end 224 can also compress and fill the space between the second body 221 and the channel wall of the connecting channel 23, improving the sealing effect.

[0089] like Figure 4 As shown, it should be noted that after the first sealing member 21 is sealed and connected to the connecting part 30, the second sealing member 22 can be sealed in the connecting channel 23 using the pressure nail device 200.

[0090] Specifically, the glue pin device 200 comprises a third body 201 and a sealing nozzle 202, the first channel 203 is formed through the third body 201, and the sealing nozzle 202 is connected to one end of the third body 201. During operation, the sealing nozzle 202 is arranged around the outer periphery of the first sealing element 21, so that the first channel 203 and the connecting channel 23 are in communication with each other. The other end of the first channel 203 away from the connecting channel 23 is inserted with a pressing rod 208, and the pressing rod 208 can reciprocate in the first channel 203.

[0091] The inner diameter of the first channel 203 matches the diameter of the first sealing element 21, so that the first sealing element 21 can be stably placed in the first channel 203. When the first sealing element 21 is placed in the first channel 203, the first sealing element 21 can be moved in the first channel 203 by the pressing rod 208, so as to press the first sealing element 21 into the connecting channel 23, and realize the sealing of the first sealing element 21 and the connecting channel 23.

[0092] Further, the glue pin device 200 further comprises a first branch 204 and a second branch 205 connected to the third body 201, wherein the first branch 204 and the second branch 205 are respectively arranged obliquely relative to the third body 201, and the second channel 206 is formed through the first branch 204, and the third channel 207 is formed through the second branch 205, and the second channel 206 and the third channel 207 are respectively connected to the first channel 203.

[0093] Specifically, the first sealing element 21 can be placed in the second channel 206, and then the first sealing element 21 can reach the first channel 203 through the second channel 206, and the first sealing element 21 can be pressed into the connecting channel 23 by the pressing rod 208 in the first channel 203.

[0094] The third channel 207 can be used to inject tracer gas into the connecting channel 23 and the gas injection hole 11, and to perform vacuumizing treatment on the containing cavity.

[0095] Based on the same concept as the above-mentioned battery monomer 100, the application further provides a battery device comprising the battery monomer 100 as described above, and the battery monomer 100 is a solid-state battery monomer.

[0096] Based on the same concept as the above-mentioned battery device, the application further provides a power consumption equipment comprising the battery device as described above.

[0097] According to one or more embodiments, in the specific use process of the application, first, the first body 211 is glued and sealed with the connecting part 30, so that the first body 211 and the connecting part 30 are sealingly connected. At this time, the baffle grid 212 is arranged around the outer periphery of the first body 211 and the connecting part 30.

[0098] Further, the sealing nozzle 202 of the glue pin device 200 is connected with the first sealing member 21, so that the first channel 203 and the connecting channel 23 are communicated with each other. Then, the containing cavity is vacuumized through the third channel 207, and the tracer gas is injected into the containing cavity. The tracer gas is filled in the containing cavity by repeating the vacuumizing and injecting processes for several times.

[0099] The first sealing member 21 is put into the second channel 206, so that the first sealing member 21 enters into the first channel 203 through the second channel 206, and then the first sealing member 21 is pressed into the connecting channel 23 by the pressing rod 208, so that the first sealing member 21 can seal the connecting channel 23, and the sealing of the gas injection hole 11 is realized.

[0100] During the cycle use of the battery monomer 100, the content of the tracer gas in the use environment can be detected, and when the content of the tracer gas exceeds the standard, it indicates that the battery monomer 100 has a leakage, and the battery monomer 100 can be processed in time.

[0101] The technical features of the above-described embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0102] The above-described embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as the limitation of the patent application scope. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A battery cell, characterized by, The battery monomer comprises: a shell having a receiving cavity inside, the shell being provided with a gas injection hole communicating with the receiving cavity; a solid electrode assembly arranged in the receiving cavity; and a sealing assembly arranged in the gas injection hole in a detachable and sealed manner. The battery monomer further comprises a connecting portion arranged around the periphery of the gas injection hole, the connecting portion being integrally formed with the shell and used for connecting the sealing assembly.

2. The battery cell of claim 1, wherein, The sealing assembly comprises a first sealing member and a second sealing member, the first sealing member being provided with a connecting channel therethrough, the first sealing member being in sealed connection with the connecting portion, and one end of the connecting channel being in communication with the gas injection hole; the second sealing member being arranged in the other end of the connecting channel away from the gas injection hole.

3. The battery cell of claim 2, wherein, The first sealing member and the second sealing member are made of different materials, and the hardness of the first sealing member is greater than that of the second sealing member.

4. The battery cell of claim 3, wherein, The material of the first sealing member comprises one of plastic, polyether ether ketone, polyimide, polytetrafluoroethylene, and polyethylene terephthalate; and / or, the material of the second sealing member comprises one of rubber, polyimide, polytetrafluoroethylene, polyvinyl chloride, polypropylene, and polyethylene.

5. The battery cell of claim 4, wherein, The first sealing member comprises a first body and a baffle grid arranged integrally, the connecting channel being arranged on the first body, the first body being in sealed connection with the connecting portion, and the baffle grid being arranged around the periphery of the first body and the connecting portion.

6. The battery cell of claim 3, wherein, The second sealing member comprises a second body and a stop portion connected to one end of the second body, the diameter of the second body being not less than the inner diameter of the connecting channel, and the diameter of the stop portion being greater than the diameter of the second body, so that when the other end of the second body away from the stop portion is inserted into the connecting channel, the stop portion can abut against the first sealing member.

7. The battery cell of claim 3, wherein, The second sealing member further comprises an elastic sealing portion connected to the other end of the second body away from the stop portion and arranged around the periphery of the second body.

8. The battery cell of claim 7, wherein, The elastic sealing portion comprises a first end connected to the second body and a second end away from the second body, and the diameter of the elastic sealing portion gradually decreases from the first end to the second end along the axial direction of the connecting channel.

9. The battery cell of claim 8, wherein, The diameter of the first end is greater than the diameter of the second body. The battery device comprises the battery monomer as claimed in any one of claims 1-9, and the battery monomer is a solid-state battery monomer.

10. A battery device characterized by comprising: The battery device comprises the battery monomer as claimed in claim 10.

11. An electrical device, characterized by ​

Images