Sealing detection device and battery manufacturing equipment

Abstract

The utility model discloses a sealing detection device and battery manufacturing equipment, and the sealing detection device comprises a detection box, an inflation mechanism and an inflation pipeline. The detection box is provided with a sealing cavity used for containing the heat exchange assembly, and a gas inlet is formed in the detection box. One end of the inflation pipeline is connected to the gas inlet, the other end of the inflation pipeline is connected to the inflation mechanism, and the inflation pipeline is used for inflating gas into the sealing cavity. The air pressure detector is arranged in the sealing cavity and used for detecting whether air in the sealing cavity leaks into the heat exchange assembly through the leakage point or not. According to the sealing detection device and the battery manufacturing equipment provided by the invention, the detection efficiency of the sealing performance detection of the heat exchange assembly can be improved.

Description

Technical Field

[0001] The present application relates to the field of batteries, and in particular to a sealing detection device and battery manufacturing equipment. Background Art

[0002] During the production process of battery devices, the assembled battery devices need to be tested for sealing. However, currently there is no separate sealing test for the heat exchange components in the battery devices. Therefore, small leaks in the heat exchange components are difficult to be found in the overall test of the battery device, which causes leakage of the heat exchange components and damages the battery cells. Currently, it is necessary to improve the testing efficiency and accuracy of the sealing performance test of the heat exchange components. Utility Model Content

[0003] In view of the above problems, the present application provides a sealing detection device and a battery manufacturing equipment, which can improve the detection efficiency of the sealing performance detection of the heat exchange component.

[0004] In a first aspect, the present application provides a sealing detection device, comprising a detection box, an inflation mechanism, an air pressure detector, and an inflation pipe. The detection box has a sealed cavity for accommodating a heat exchange component, and a gas inlet is provided on the detection box. One end of the inflation pipe is connected to the gas inlet, and the other end of the inflation pipe is connected to the inflation mechanism, and the inflation pipe is used to fill the gas into the sealed cavity. The air pressure detector is provided in the sealed cavity, and the air pressure detector is used to detect whether the gas in the sealed cavity leaks into the heat exchange component through a leak point.

[0005] In the technical solution of the embodiment of the present application, a detection box is provided to accommodate the heat exchange component, so as to provide a sealed detection environment for the heat exchange component, thereby reducing the influence of external gas entry or internal gas leakage on the detection result. An inflation mechanism is provided to fill the gas into the sealed cavity through the inflation pipe, and the air pressure in the sealed cavity is increased to a preset value. The air pressure detector is used to detect whether the air pressure in the sealed cavity decreases within a preset time, so as to reflect whether there is a leak point on the heat exchange component in the sealed cavity. The above-mentioned detection device can quickly and efficiently detect the sealing of the heat exchange component, so as to facilitate the subsequent repair of the leaking heat exchange component and improve the stability of the operation of the heat exchange component.

[0006] In some embodiments, the detection box includes a box cover, a lower box body, and a seal. The lower box body includes a bottom plate and an inner side plate arranged circumferentially around the bottom plate. The box cover is arranged opposite to the bottom plate and connected to the inner side plate. The seal is arranged between the box cover and the lower box body to seal the box cover and the lower box body. In the above structure, a stable structural space is formed by arranging the box cover and the lower box body, thereby improving the stability of the heat exchange component sealing detection process. The seal is arranged to reduce the risk of gas leakage from the gap between the box cover and the lower box body, thereby improving the accuracy of the detection result.

[0007] In some embodiments, the box cover includes a top plate and an outer plate. The top plate is arranged opposite to the bottom plate. The outer plate is arranged around the circumference of the top plate, and the outer plate is arranged on the outer side of the inner plate away from the sealing cavity and surrounds the inner plate. In the above structure, the outer plate is arranged on the box cover to surround the inner plate, which increases the contact area between the box cover and the lower box body, and improves the connection strength and stability between the box cover and the lower box body.

[0008] In some embodiments, the seal comprises a first sealing portion disposed between the inner plate and the outer plate. The seal is disposed between the inner plate and the outer plate, thereby increasing the installation area of ​​the seal and improving the sealing performance.

[0009] In some embodiments, the seal also includes a second seal provided between the inner plate and the bottom plate, and the second seal is connected to the first seal. The above structure further reduces the risk of gas leakage by providing the second seal, improves the sealing performance of the detection process, and thus improves the accuracy of the detection result.

[0010] In some embodiments, an observation window is provided on the top plate, and a transparent visual panel is provided on the observation window. By providing the observation window, the sealing detection process can be observed in real time, thereby improving the accuracy of the detection result.

[0011] In some embodiments, the sealing detection device also includes a compression component, which includes a base, a support frame and a driving cylinder. The base is used to support the lower box body. The support frame is arranged on the base, and the support frame includes a cross bar arranged opposite to the lower box body. The driving cylinder is arranged on the cross bar, and the output shaft of the driving cylinder is connected to the box cover. The driving cylinder can drive the box cover to move toward the lower box body to be sealed with the lower box body. In the above structure, the base is provided to provide stable support for the compression process before the sealing detection, and the support frame is used to support the driving cylinder. The driving cylinder pushes the box cover to move toward the lower box body, and the box cover is sealed with the lower box body, thereby improving the efficiency of the assembly of the box cover and the lower box body and improving the sealing performance.

[0012] In some embodiments, there are multiple driving cylinders, and the multiple driving cylinders are arranged at intervals along the circumference of the box cover. The multiple driving cylinders can simultaneously apply pressure to multiple positions on the box cover, thereby improving the force balance of the box cover and further improving the sealing performance.

[0013] In some embodiments, the sealing detection device further includes a sliding assembly, and the sliding assembly includes a slide rail and a movable plate. The slide rail is arranged on the base. The movable plate is provided with a slide groove matching the slide rail, and the movable plate is movably connected to the slide rail through the slide groove, and the lower box is arranged on the movable plate and can move relative to the base. In the above structure, by setting the sliding assembly, the lower box and the heat exchange assembly can be moved toward the box cover, or the lower box and the heat exchange assembly can be moved toward the transport box, which is convenient for replacing the heat exchange assembly in the lower box and improving the efficiency of sealing detection.

[0014] In some embodiments, the sealing detection device further comprises a control component, which is electrically connected to the inflation mechanism and the driving cylinder. By providing the control component, the inflation process and the pressing process are automatically controlled, thereby improving the efficiency of the airtight detection.

[0015] In a second aspect, the present application provides a battery manufacturing device, which includes the sealing detection device in the above embodiment.

[0016] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0018] Figure 1 A schematic diagram of the structure of a vehicle according to an embodiment of the present application;

[0019] Figure 2 A schematic diagram of the exploded structure of a battery device provided in some embodiments of the present application;

[0020] Figure 3 A schematic diagram of the exploded structure of a battery cell provided in some embodiments of the present application;

[0021] Figure 4 A schematic diagram of the exploded structure of a sealing detection device provided in some embodiments of the present application;

[0022] Figure 5 A schematic diagram of the exploded structure of a sealing detection device provided in some other embodiments of the present application;

[0023] Figure 6 A schematic diagram of the cross-sectional structure of a sealing member of a sealing detection device provided in some embodiments of the present application;

[0024] Figure 7 A schematic diagram of the structure of a box cover of a sealing detection device provided in some embodiments of the present application;

[0025] Figure 8 A schematic diagram of the structure of a sealing detection device provided in some embodiments of the present application.

[0026] DETAILED DESCRIPTION OF REFERENCE NUMERALS

[0027] 1. Vehicle; 2. Battery device; 3. Controller; 4. Motor; 5. Box; 51. First box part; 52. Second box part; 6. Battery cell; 10. Electrode assembly; 40. Casing; 7. Heat exchange assembly; 8. Sealing detection device; 801. Detection box; 802. Inflating mechanism; 803. Inflating pipe; 804. Gas inlet; 805. Box cover; 806. Lower box; 807. Sealing member; 808. Bottom plate; 809. Inner plate; 810. Top plate; 811. Outer plate; 812. First sealing part; 813. Second sealing part; 814. Observation window; 815. Base; 816. Support frame; 817. Driving cylinder; 818. Slide rail; 819. Moving plate. DETAILED DESCRIPTION

[0028] The following embodiments of the technical solution of the present application will be described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0030] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0031] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0032] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0033] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0034] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0035] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0036] During the production process of the battery device, the battery device is usually tested for sealing as a whole, but there is no step to test some components in the battery device separately. The heat exchange component in the battery device has a heat exchange flow channel for the flow of heat exchange medium. When the heat exchange flow channel leaks, the heat exchange medium will flow out of the heat exchange component and damage the battery cells in the battery device. Therefore, it is necessary to perform a separate sealing test on the heat exchange component. In addition, during the operation of the heat exchange component, a high-precision sealing test is required on the surrounding components to find out the tiny leaks for subsequent repairs.

[0037] Based on the above situation, an embodiment of the present application provides a sealing detection device, in which a detection box is provided to accommodate a heat exchange component, providing a sealed detection environment for the heat exchange component, and reducing the influence of external gas entry or internal gas leakage on the detection result. An inflation mechanism is provided to fill the gas into the sealed cavity through an inflation pipe, and the air pressure in the sealed cavity is increased to a preset value. The air pressure detector is used to detect whether the air pressure in the sealed cavity decreases within a preset time, so as to reflect whether there is a leak on the heat exchange component in the sealed cavity. The above-mentioned detection device can quickly and efficiently detect the sealing of the heat exchange component, so as to facilitate the subsequent repair of the leaking heat exchange component and improve the stability of the operation of the heat exchange component.

[0038] The battery apparatus mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells, which are connected in series, in parallel or in mixed connection through a busbar component.

[0039] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells; as an example, a battery cell assembly may be a battery module, and a battery module is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, a battery module may be formed by bundling a plurality of battery cells by a cable tie.

[0040] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case.

[0041] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0042] As an example, the battery cell assembly may also be housed in the case by directly fixing a plurality of battery cells to the case.

[0043] In the embodiment of the present application, the battery cell may be a secondary battery cell, which refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0044] Battery cells may include but are not limited to lithium ion battery cells, sodium ion battery cells, sodium lithium ion battery cells, lithium metal battery cells, sodium metal battery cells, lithium sulfur battery cells, magnesium ion battery cells, nickel metal hydride battery cells, nickel cadmium battery cells, lead storage battery cells, etc.

[0045] As an example, the battery cell may be a cylindrical battery cell, a prismatic battery cell or a battery cell of other shapes. The prismatic battery cell includes a square shell battery cell, a blade-shaped battery cell, a polygonal battery, such as a hexagonal battery, etc. There is no particular limitation in the present application.

[0046] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0047] In some embodiments, the battery device may be an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.

[0048] The battery device disclosed in the embodiments of the present application can be used in various energy storage systems that use the battery device as a power source or use the battery device as an energy storage element. The electrical device can be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. Among them, the electric toy can include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like, and the spacecraft can include an airplane, a rocket, a space shuttle, and a spacecraft, and the like.

[0049] For the convenience of description, the following embodiments are described by taking the electric device as a vehicle as an example.

[0050] Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application.

[0051] like Figure 1 As shown, a battery device 2 is disposed inside the vehicle 1, and the battery device 2 may be disposed at the bottom, head, or tail of the vehicle 1. The battery device 2 may be used to power the vehicle 1, for example, the battery device 2 may be used as an operating power source for the vehicle 1.

[0052] The vehicle 1 may further include a controller 3 and a motor 4 , wherein the controller 3 is used to control the battery device 2 to supply power to the motor 4 , for example, to meet the power requirements of starting, navigating and driving the vehicle 1 .

[0053] In some embodiments of the present application, the battery device 2 can not only serve as an operating power source for the vehicle 1, but also serve as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0054] Figure 2 Schematic diagram of the exploded structure of a battery device provided in some embodiments of the present application.

[0055] The box 5 is used to accommodate the battery cell 6, and the box 5 can be of various structures. In some embodiments, the box 5 can include a first box portion 51 and a second box portion 52, the first box portion 51 and the second box portion 52 cover each other, and the first box portion 51 and the second box portion 52 jointly define a receiving space 53 for accommodating the battery cell.

[0056] The battery device 2 further includes a heat exchange assembly 7, which is used to exchange heat with the battery cell 6 to adjust the operating temperature of the battery cell 6. Exemplarily, the heat exchange assembly 7 includes two heat exchange plates arranged opposite to each other, and a heat exchange flow channel is formed between the two heat exchange plates, and the heat exchange flow channel is used for the heat exchange medium to flow.

[0057] In the battery device 2, the battery cell 6 can be one or more. If there are more than one battery cell 6, the battery cells 6 can be connected in series, in parallel or in mixed connection. Mixed connection means that the battery cells 6 are both connected in series and in parallel. The battery cells 6 can be directly connected in series, in parallel or in mixed connection, and then the whole formed by the battery cells 6 is accommodated in the box 5; of course, the battery cells can also be connected in series, in parallel or in mixed connection to form a battery module, and then the battery modules are connected in series, in parallel or in mixed connection to form a whole, and then accommodated in the box 5.

[0058] In some optional embodiments, the battery cells 6 may also be directly accommodated in the box body 5 to reduce the connecting components or supporting components required to form the battery module and improve the energy density of the battery device 2 .

[0059] For example, the battery cell 6 may be the smallest unit constituting the battery device 2 .

[0060] Figure 3 A schematic diagram of the exploded structure of a battery cell provided in some embodiments of the present application.

[0061] like Figure 3 As shown, in some embodiments, the battery cell 6 includes a housing 40 and an electrode assembly 10 contained in the housing 40. The electrode assembly 10 includes a positive electrode and a negative electrode. During the charge and discharge process of the battery cell 6, active ions (such as lithium ions) are embedded and extracted back and forth between the positive electrode and the negative electrode. Optionally, the electrode assembly 10 also includes a separator disposed between the positive electrode and the negative electrode, which can reduce the risk of short circuit between the positive and negative electrodes while allowing active ions to pass through.

[0062] Please refer to Figures 4 to 6 , Figure 4 This is a schematic diagram of the exploded structure of a sealing detection device provided in some embodiments of the present application. Figure 5 Schematic diagram of the exploded structure of the sealing detection device provided in some other embodiments of the present application, Figure 6A schematic diagram of the cross-sectional structure of a sealing component of a sealing detection device provided in some embodiments of the present application.

[0063] As shown in the figure, the embodiment of the present application provides a sealing detection device 8, including a detection box 801, an air filling mechanism 802, an air pressure detector and an air filling pipe 803. The detection box 801 has a sealed cavity for accommodating the heat exchange component 7, and a gas inlet 804 is provided on the detection box 801. One end of the air filling pipe 803 is connected to the gas inlet 804, and the other end of the air filling pipe 803 is connected to the air filling mechanism 802, and the air filling pipe 803 is used to fill the gas into the sealed cavity. The air pressure detector is arranged in the sealed cavity, and the air pressure detector is used to detect whether the gas in the sealed cavity leaks into the heat exchange component 7 through the leak point.

[0064] The detection box 801 can be made of metal material, and the shape of the sealed cavity can be similar to that of the heat exchange component 7, while its spatial volume is slightly larger than the volume of the heat exchange component 7. The inflation mechanism 802 can be an electric inflation pump or a compressor. The inflation pipe is sealed and connected to the detection box 801, and a one-way valve can be connected to the inflation pipe to reduce the risk of gas in the sealed cavity leaking from the inflation pipe.

[0065] The steps of using the sealing detection device 8 provided in the embodiment of the present application to perform sealing performance detection may include: first, sealing the water inlet and outlet of the heat exchange component 7 to reduce the gas entering the heat exchange component 7 from the water inlet or outlet during the detection process. Then, place the sealed heat exchange component 7 into the sealed cavity, and install and seal the detection box 801. Subsequently, the inflation tube is connected to the detection box 801, the restart mechanism is turned on to fill the gas into the detection box 801, the reading of the air pressure detector is read, and the inflation is stopped after the air pressure in the sealed cavity reaches the preset value. Then, observe the reading of the air pressure detector within the preset time: if the reading of the air pressure detector changes within the preset range, it means that there is no leak in the heat exchange component 7; if the reading of the air pressure detector decreases by more than the preset value, it means that there is a leak in the heat exchange component 7, and the gas in the sealed cavity enters the inside of the heat exchange component 7 from the leak.

[0066] In the technical solution of the embodiment of the present application, a detection box 801 is provided to accommodate the heat exchange component 7 to be detected, so as to provide a sealed detection environment for the heat exchange component 7, thereby reducing the influence of external gas entry or internal gas leakage on the detection result. An inflation mechanism 802 is provided to fill the gas into the sealed cavity through the inflation pipe 803, and the air pressure in the sealed cavity is increased to a preset value. The air pressure detector is used to detect whether the air pressure in the sealed cavity decreases within a preset time, so as to reflect whether there is a leak point on the heat exchange component 7 in the sealed cavity. The above-mentioned detection device can perform a rapid and efficient sealing detection on the heat exchange component 7, so as to facilitate the subsequent repair of the leaking heat exchange component 7 and improve the stability of the operation of the heat exchange component 7.

[0067] Optionally, the sealing detection device 8 of the present application can also be used in the production process of other components, and the detection box 801 can be set to the shape of the object to be detected, for example, the sealing performance detection of the battery cell 6, etc.

[0068] like Figure 5 As shown, in some embodiments of the present application, the detection box 801 includes a box cover 805, a lower box body 806, and a sealing member 807. The lower box body 806 includes a bottom plate 808 and an inner plate 809 arranged circumferentially around the bottom plate 808. The box cover 805 is arranged opposite to the bottom plate 808 and connected to the inner plate 809. The sealing member 807 is arranged between the box cover 805 and the lower box body 806 to seal and connect the box cover 805 and the lower box body 806.

[0069] The box cover 805 is arranged opposite to the bottom plate 808 and connected to the inner plate 809 to form a closed space. This design ensures that the detection box 801 can maintain a stable structure during operation and reduce deformation or damage caused by external force or internal pressure changes. The lower box body 806 includes a bottom plate 808 and an inner plate 809 arranged circumferentially around the bottom plate 808. The inner plate 809 not only enhances the structural strength of the box body 5, but also provides an interface for connection with the box cover 805. The box cover 805 can be more evenly connected to the box body 5, thereby improving the overall sealing and stability. The seal 807 is arranged between the box cover 805 and the lower box body 806 to reduce the leakage of gas or liquid from the gap between the box cover 805 and the lower box body 806.

[0070] In the above structure, a stable structural space is formed by setting the box cover 805 and the lower box body 806, thereby improving the stability of the sealing detection process of the heat exchange component 7. The sealing member 807 is provided to reduce the risk of gas leakage from the gap between the box cover 805 and the lower box body 806, thereby improving the accuracy of the detection result.

[0071] In some embodiments of the present application, the box cover 805 includes a top plate 810 and an outer plate 811. The top plate 810 is arranged opposite to the bottom plate 808. The outer plate 811 is arranged around the circumference of the top plate 810, and the outer plate 811 is arranged on the outer side of the inner plate 809 away from the sealed cavity and surrounds the inner plate 809. The outer plate 811 is arranged around the circumference of the top plate 810, and the outer plate 811 not only enhances the structural strength of the box cover 805, but also provides a larger contact surface with the lower box body 806, and establishes a more secure connection between the box cover 805 and the lower box body 806. The outer plate 811 is arranged on the outer side of the inner plate 809 away from the sealed cavity, and surrounds the inner plate 809.

[0072] The above structure not only increases the contact area between the box cover 805 and the lower box body 806, but also enhances the connection strength between the two by physically surrounding them, and more effectively resists external pressure and deformation. By providing the outer plate 811 and surrounding the inner plate 809, the connection strength between the box cover 805 and the lower box body 806 is improved. With higher connection strength and stability, the detection box 801 can better maintain its integrity when it is subjected to internal pressure or external impact. Therefore, the outer plate 811 is provided on the box cover 805 to surround the inner plate 809, which increases the contact area between the box cover 805 and the lower box body 806, and improves the connection strength and stability between the box cover 805 and the lower box body 806.

[0073] like Figure 5 as well as Figure 6 As shown, in some embodiments of the present application, the seal 807 includes a first sealing portion 812 disposed between the inner plate 809 and the outer plate 811. Optionally, a material having certain elasticity and sealing properties should be used to manufacture the first seal 807. Exemplarily, the first seal 807 can be made of materials such as rubber, polytetrafluoroethylene or polyurethane.

[0074] The first sealing portion 812 is arranged between the inner plate 809 and the outer plate 811, which means that the seal 807 not only contacts the outer plate 811 of the box cover 805, but also contacts the inner plate 809 of the lower box body 806. This layout increases the contact area of ​​the seal 807, thereby improving its sealing performance. Increasing the contact area of ​​the seal 807 means that the seal 807 can better fill and cover the gap between the box cover 805 and the lower box body 806. This helps to reduce leakage points and improve the uniformity and reliability of the seal. By arranging the seal 807 between the inner plate 809 and the outer plate 811, not only the contact area of ​​the seal 807 is increased, but also the structural support between the inner plate 809 and the outer plate 811 is utilized. This design enables the seal 807 to better maintain its shape and position when subjected to pressure, thereby improving the overall sealing performance.

[0075] In some embodiments of the present application, the seal 807 further includes a second sealing portion 813 disposed between the inner plate 809 and the bottom plate 808 , and the second sealing portion 813 is connected to the first sealing portion 812 .

[0076] The second sealing part 813 is located between the inner plate 809 and the bottom plate 808, and is connected to the first sealing part 812 to form a continuous sealing surface, which effectively covers all potential leakage points between the box cover 805 and the lower box body 806, further reducing the risk of gas leakage. By providing the second sealing part 813 and connecting it to the first sealing part 812, the sealing member 807 forms a more complete and continuous sealing system. This not only enhances the reliability and durability of the sealing member 807, but also improves the overall sealing performance of the detection box 801.

[0077] The above structure can reduce the risk of gas or liquid leaking out from the gap between the box cover 805 and the lower box body 806. This helps to ensure that the gas or liquid during the detection process is kept in the detection box 801, thereby improving the accuracy and reliability of the detection results. The provision of the second sealing portion 813 not only improves the sealing performance, but also increases the contact area between the sealing member 807 and the box body 5, thereby enhancing the stability of the structure, improving the sealing performance of the detection process, and thus improving the accuracy of the detection results.

[0078] In some optional embodiments, the first sealing portion 812 and the second sealing portion 813 are integrally formed, which effectively improves the sealing performance and the assembly convenience of the sealing member 807.

[0079] like Figure 7 As shown, in some embodiments of the present application, an observation window 814 is provided on the top plate 810 , and a transparent viewing panel is provided on the observation window 814 .

[0080] The observation window 814 allows the operator to directly observe the conditions in the box during the detection process. Any abnormal conditions or changes in the detection process can be monitored, because timely observation and response can significantly improve the accuracy of the test results. Real-time observation of the detection process allows the operator to capture any abnormal conditions in a timely manner, such as gas leaks, temperature fluctuations, etc. This timely feedback and response can significantly improve the accuracy of the test results and reduce the possibility of misjudgment. The design of the observation window 814 and the transparent visual panel also enhances the safety and ease of operation of the detection box 801. The operator can monitor without directly contacting the detection medium, thereby reducing potential safety risks.

[0081] By providing the observation window 814, the sealing detection process can be observed in real time, thereby improving the accuracy of the detection result.

[0082] like Figure 8As shown, in some embodiments of the present application, the sealing detection device 8 further includes a compression assembly, which includes a base 815, a support frame 816, and a driving cylinder 817. The base 815 is used to support the lower box body 806. The support frame 816 is arranged on the base 815, and the support frame 816 includes a cross bar arranged opposite to the lower box body 806. The driving cylinder 817 is arranged on the cross bar, and the output shaft of the driving cylinder 817 is connected to the box cover 805. The driving cylinder 817 can drive the box cover 805 to move toward the lower box body 806 to be sealed and connected with the lower box body 806.

[0083] The base 815 serves as the foundation of the entire compression assembly and provides a stable support for the lower box 806. This stability is essential for the subsequent compression and sealing process, and the lower box 806 will not move or deform during the inspection process.

[0084] The support frame 816 is arranged on the base 815 and is arranged opposite to the lower box body 806. It includes structures such as cross bars, which provide necessary support and positioning for the driving cylinder 817. The design of the support frame 816 enables the driving cylinder 817 to be accurately connected to the box cover 805 and ensures that no excessive lateral force is generated during the pushing process. Exemplarily, the support frame 816 includes a longitudinal rod arranged on the base 815, the two longitudinal rods are arranged opposite to each other, and the two ends of the cross rod are connected to the two longitudinal rods to form a stable support structure.

[0085] The driving cylinder 817 is arranged on the crossbar of the support frame 816, and its output shaft is connected to the box cover 805. Through the telescopic movement of the driving cylinder 817, the box cover 805 can be driven to move toward the lower box body 806, thereby realizing the sealed connection between the box cover 805 and the lower box body 806.

[0086] After the sealing assembly is set, the sealing process before the airtight test is optimized. The base 815 provides stable support for the whole process, while the support frame 816 and the driving cylinder 817 ensure that the box cover 805 can be accurately and quickly sealed and connected with the lower box body 806. This design not only improves the assembly efficiency, but also enhances the sealing performance. Through the precise control of the driving cylinder 817, the box cover 805 can be evenly pressed on the lower box body 806 to form a tight sealing surface. This tight seal helps to reduce gas leakage and improve the accuracy of the test results.

[0087] In some embodiments of the present application, there are multiple driving cylinders 817, and the multiple driving cylinders 817 are arranged at intervals along the circumference of the box cover 805. Optionally, the driving cylinder 817 can also be correspondingly arranged in the middle of the upper cover.

[0088] A plurality of driving cylinders 817 are provided and spaced along the circumference of the box cover 805, so as to ensure that the box cover 805 can be evenly stressed when subjected to pressure, which helps to reduce the risk of deformation or leakage caused by uneven stress. The improvement of the force balance directly leads to the improvement of the sealing performance. When the box cover 805 is evenly stressed, it can better fit with the lower box body 806 to form a tight sealing surface. This tight seal helps to prevent gas leakage, thereby improving the accuracy of the test results.

[0089] Furthermore, the multiple driving cylinders 817 can work together when pushing the box cover 805. They can share the force required to push the box cover 805, thereby reducing the load of a single cylinder. This synergy not only increases the service life of the cylinder, but also enhances the stability and reliability of the entire compression assembly.

[0090] In some embodiments of the present application, the sealing detection device 8 further includes a sliding assembly, which includes a slide rail 818 and a moving plate 819. The slide rail 818 is disposed on the base 815. The moving plate 819 is provided with a slide groove matching the slide rail 818, and the moving plate 819 is movably connected to the slide rail 818 through the slide groove, and the lower box 806 is disposed on the moving plate 819 and can move relative to the base 815.

[0091] The sliding assembly is mainly composed of a slide rail 818 and a moving plate 819. The slide rail 818 is fixed on the base 815, providing a stable moving path for the moving plate 819. The moving plate 819 is provided with a slide groove matching the slide rail 818, so that the moving plate 819 can move smoothly along the slide rail 818. By setting the lower box 806 on the moving plate 819, the lower box 806 can move relative to the base 815. This design makes it easy to replace the heat exchange assembly 7 in the lower box 806 by moving the moving plate 819, without the need to disassemble the entire detection device in a complicated manner.

[0092] The design of the sliding assembly not only improves the mobility of the lower box 806, but also makes it easier to replace the heat exchange assembly 7. The operator can easily move the moving plate 819 to move the lower box 806 and the heat exchange assembly 7 therein to a convenient position for operation, so as to quickly replace or maintain it. The sliding assembly also improves the efficiency of sealing detection. During the detection process, if the lower box 806 or the heat exchange assembly 7 therein needs to be replaced, the operator can quickly complete this operation by moving the moving plate 819, thereby reducing the waiting time during the detection process.

[0093] In the above structure, by setting a sliding component, the lower box body 806 and the heat exchange component 7 can be moved toward the box cover 805, or the lower box body 806 and the heat exchange component 7 can be moved toward the transport box body 5, which facilitates the replacement of the heat exchange component 7 in the lower box body 806 and improves the efficiency of sealing detection.

[0094] In some embodiments of the present application, the sealing detection device 8 further includes a control component, which is electrically connected to the inflation mechanism 802 and the driving cylinder 817 .

[0095] During the airtightness test, the inflation mechanism 802 is responsible for injecting gas into the test box 801. By setting a control component, the inflation process can be automatically controlled, including controlling parameters such as inflation speed, inflation pressure, and inflation time, to ensure that the gas pressure in the test box 801 reaches the predetermined test requirements.

[0096] The driving cylinder 817 is responsible for pushing the box cover 805 to seal the lower box body 806. By setting a control component, the automatic control of the pressing process can be achieved. This includes controlling the parameters such as the extension speed, pressing force and pressing time of the driving cylinder 817 to ensure that a tight sealing surface is formed between the box cover 805 and the lower box body 806.

[0097] Automatic control enables the inflation process and the pressing process to be carried out according to the predetermined procedure without manual intervention. This not only improves the detection efficiency, but also reduces the errors and uncertainties caused by human operation. By accurately controlling the inflation process and the pressing process, it can be ensured that the gas pressure and sealing state in the detection box 801 meet the predetermined detection requirements. This helps to enhance the accuracy and reliability of the detection results and provide strong data support for the subsequent process.

[0098] In some optional embodiments, the sealing detection device 8 includes a detection box 801, an inflation mechanism 802 and an inflation pipe 803. The detection box 801 has a sealed cavity for accommodating the heat exchange component 7, and a gas inlet 804 is provided on the detection box 801. One end of the inflation pipe 803 is connected to the gas inlet 804, and the other end of the inflation pipe 803 is connected to the inflation mechanism 802, and the inflation pipe 803 is used to fill the gas into the sealed cavity. An air pressure detector is arranged in the sealed cavity, and the air pressure detector is used to detect whether the gas in the sealed cavity leaks into the heat exchange component 7 through the leak point. The detection box 801 includes a box cover 805, a lower box body 806 and a sealing member 807. The lower box body 806 includes a bottom plate 808 and an inner side plate 809 arranged circumferentially around the bottom plate 808. The box cover 805 is arranged opposite to the bottom plate 808 and connected to the inner side plate 809. The sealing member 807 is arranged between the box cover 805 and the lower box body 806 to seal and connect the box cover 805 and the lower box body 806. The box cover 805 includes a top plate 810 and an outer plate 811. The top plate 810 and the bottom plate 808 are arranged opposite to each other. The outer plate 811 surrounds the circumferential arrangement of the top plate 810, and the outer plate 811 is arranged on the outer side of the inner plate 809 away from the sealing cavity and surrounds the inner plate 809. The sealing member 807 includes a first sealing portion 812 arranged between the inner plate 809 and the outer plate 811 and a second sealing portion 813 arranged between the inner plate 809 and the bottom plate 808, and the second sealing portion 813 is connected to the first sealing portion 812. The sealing detection device 8 also includes a compression assembly, which includes a base 815, a support frame 816 and a driving cylinder 817. The output shaft of the driving cylinder 817 is connected to the box cover 805. The driving cylinder 817 can drive the box cover 805 to move toward the lower box body 806 to be sealed with the lower box body 806. The sealing detection device 8 also includes a sliding assembly, which includes a slide rail 818 and a moving plate 819. The slide rail 818 is arranged on the base 815. The moving plate 819 is provided with a slide groove matching the slide rail 818, and the moving plate 819 is movably connected with the slide rail 818 through the slide groove. The lower box body 806 is arranged on the moving plate 819 and can move relative to the base 815.

[0099] The embodiments of the present application also provide a battery manufacturing device, which includes the sealing detection device 8 in the above embodiment. By setting up a detection box 801 to accommodate the heat exchange component 7, a sealed detection environment is provided for the heat exchange component 7, thereby reducing the impact of external gas entry or internal gas leakage on the detection result. An inflation mechanism 802 is provided to fill the gas into the sealed cavity through the inflation pipe 803, and the air pressure in the sealed cavity is increased to a preset value. The air pressure detector is used to detect whether the air pressure in the sealed cavity decreases within a preset time, so as to reflect whether there is a leakage point on the heat exchange component 7 in the sealed cavity. The above-mentioned detection device can quickly and efficiently detect the sealing of the heat exchange component 7, so as to facilitate the subsequent repair of the leaking heat exchange component 7 and improve the stability of the operation of the heat exchange component 7.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A sealing detection device, characterized in that: include: A detection box having a sealed cavity for accommodating a heat exchange component, wherein a gas inlet is provided on the detection box; Inflatable mechanism; An air filling pipe, one end of which is connected to the gas inlet and the other end of which is connected to the air filling mechanism, and the air filling pipe is used to fill the gas into the sealed cavity; An air pressure detector is arranged in the sealed cavity, and is used to detect whether the gas in the sealed cavity leaks into the heat exchange component through a leak point.

2. The sealing detection device according to claim 1, characterized in that: The detection box comprises: The lower box body comprises a bottom plate and an inner side plate arranged circumferentially around the bottom plate; A box cover, arranged opposite to the bottom plate and connected to the inner plate; A sealing member is disposed between the box cover and the lower box body to seal and connect the box cover and the lower box body.

3. The sealing detection device according to claim 2, characterized in that: The box cover comprises: A top plate, arranged opposite to the bottom plate; The outer plate is arranged around the circumference of the top plate, and the outer plate is arranged on the outer side of the inner plate away from the sealing cavity and surrounds the inner plate.

4. The sealing detection device according to claim 3, characterized in that: The sealing member includes a first sealing portion disposed between the inner plate and the outer plate.

5. The sealing detection device according to claim 4, characterized in that: The sealing member further includes a second sealing portion disposed between the inner plate and the bottom plate, wherein the second sealing portion is connected to the first sealing portion.

6. The sealing detection device according to any one of claims 3 to 5, characterized in that: An observation window is provided on the top plate, and a transparent viewing plate is provided on the observation window.

7. The sealing detection device according to any one of claims 2 to 5, characterized in that: The sealing detection device further comprises a sealing component, wherein the sealing component comprises: A base, used for supporting the lower box; A support frame, arranged on the base, the support frame comprising a cross bar arranged opposite to the lower box body; A driving cylinder is arranged on the cross bar, and an output shaft of the driving cylinder is connected to the box cover. The driving cylinder can drive the box cover to move toward the lower box body so as to be sealed and connected with the lower box body.

8. The sealing detection device according to claim 7, characterized in that: There are multiple driving cylinders, and the multiple driving cylinders are arranged at intervals along the circumference of the box cover.

9. The sealing detection device according to claim 7, characterized in that: The sealing detection device further comprises a sliding assembly, wherein the sliding assembly comprises: A slide rail, arranged on the base; The movable plate is provided with a slide groove matching the slide rail, the movable plate is movably connected to the slide rail through the slide groove, and the lower box is arranged on the movable plate and can move relative to the base.

10. The sealing detection device according to claim 7, characterized in that: The sealing detection device also includes a control component, which is electrically connected to the inflation mechanism and the driving cylinder.

11. A battery manufacturing device, characterized in that: It comprises a sealing detection device as described in any one of claims 1-10.

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