Glue discharging device and gluing equipment

Abstract

The utility model relates to a glue discharging device and gluing equipment. The glue discharging device comprises a glue storage assembly and an impressing plate. The glue storage component is provided with a glue storage groove which can be communicated with the surface of the battery; the impressing plate is contained in the glue storage groove, a circulation hole penetrating in the groove depth direction of the glue storage groove is formed in the impressing plate, and the impressing plate can move in the glue storage groove in the groove depth direction of the glue storage groove. When the adhesive tape is coated on the large surface of the single battery through the adhesive discharging device provided by the invention, the adhesive tape is driven by the impressing plate to move, and finally the adhesive tape is formed and coated on the surface of the battery to form an adhesive coating structure. Therefore, the possibility of large-area glue overflow caused by a gap between the rubber strips when the rubber strips are pasted through a traditional rubberizing device is reduced, and finally, a colloid hard block is not easy to form on the large surface of the single battery; and therefore, the possibility of local stress of the battery monomers caused by direct contact and collision between the battery monomers and the colloid hard blocks when the battery monomers are expanded is reduced, and the reliability of the battery monomers is effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of gluing, and in particular to a gluing device and gluing equipment. Background Art

[0002] In the production process of power batteries, it is generally necessary to apply adhesive strips to the outer wall of the battery cell, and then use the adhesive strips to achieve the bonding of multiple battery cells. In related technologies, most of the adhesive strips are attached to the outer wall of the battery cell by adhesive sticking equipment and arranged into a U-shaped structure. However, since there is a small gap between the adhesive strips when the adhesive sticking equipment sticks the adhesive strips, when multiple battery cells are assembled into a group in the battery box, the structural adhesive at the bottom of the box is easy to overflow upwards and flow into the large surface area of the battery cell from the gaps in the adhesive strips. When the structural adhesive solidifies into a hard colloidal block, the battery cell will directly contact and collide with the hard colloidal block when it expands, causing local stress on the battery cell, affecting the reliability of the battery cell. Utility Model Content

[0003] In view of the above problems, the present application provides a glue discharging device and a glue coating device, which can reduce the possibility of large-scale glue overflow in battery cells and effectively improve the reliability of battery cells.

[0004] In a first aspect, the present application provides a glue dispensing device comprising a glue storage assembly and a platen. The glue storage assembly comprises a glue storage tank capable of communicating with the surface of a battery; the platen is accommodated in the glue storage tank, and has a flow hole extending along the depth of the glue storage tank on the platen. The platen is capable of moving within the glue storage tank along the depth of the glue storage tank.

[0005] When the glue discharging device provided in the embodiment of the present application is used to coat the large surface of the battery cell with a glue strip, the glue is first flowed into the glue storage tank, and then, in the process of the stamping plate moving along the depth direction of the glue storage tank, the glue is driven by the stamping plate to move, and the glue in the glue storage tank can flow through the flow hole to the side of the stamping plate away from the glue inlet hole, thereby allowing the glue to be more quickly coated on the side of the stamping plate away from the glue inlet hole, so that when it is subsequently in contact with the large surface of the battery cell, a more sufficient amount of glue can be in contact with the large surface of the battery cell, and then finally formed and coated on the battery surface to form a glue coating structure, effectively ensuring the integrity of the glue coating structure. When the glue discharging device provided in the present application coats the outer wall of the battery cell with a glue coating structure, the possibility of large-scale glue overflow caused by the gap between the glue strips when the traditional glue strip is pasted by the glue sticking equipment is reduced, and finally, it is not easy to form a glue block on the large surface of the battery cell, thereby reducing the possibility of local stress on the battery cell caused by direct contact and collision with the glue block when the battery cell expands, thereby effectively improving the reliability of the battery cell.

[0006] In some embodiments, the stamping plate is a continuous structure along the circumference of the glue storage tank.

[0007] By arranging the stamping plate as a continuous structure along the circumference of the glue storage tank, the glue coating structure finally transferred to the large surface of the battery cell is a continuous structure, thereby reducing the possibility that the structural glue at the bottom of the box will overflow upward and flow into the large surface area of the battery cell from the gaps in the glue coating structure when the battery cell is installed in the box.

[0008] In some embodiments, the stamping plate is a discontinuous structure along the circumference of the glue storage tank, so that the final glue coating structure can be a concave structure to meet different needs.

[0009] In some embodiments, the glue storage assembly is configured with a glue inlet hole connected to the glue storage tank. By providing the glue inlet hole, the glue can flow from the glue inlet hole into the glue storage tank, making it convenient to supply glue to the glue storage tank.

[0010] In some embodiments, along a plane perpendicular to the depth of the glue storage tank, the flow hole and the glue inlet hole at least partially overlap. By at least partially overlapping the flow hole and the glue inlet hole, the glue entering through the glue inlet hole can more easily flow through the flow hole to the side of the stamping plate closest to the large surface of the battery cell.

[0011] In some embodiments, the glue inlet hole is wrapped around the outer periphery of the flow hole along a plane perpendicular to the depth of the glue storage tank. By wrapping the glue inlet hole around the outer periphery of the flow hole, the glue inlet amount is greater than the glue outlet amount, which enables faster glue filling operations.

[0012] In some embodiments, there are multiple glue inlet holes, which are spaced apart. The number of circulation holes is less than or equal to the number of glue inlet holes. By setting the number of circulation holes to be less than or equal to the number of glue inlet holes, the amount of glue inflow is greater than the amount of glue outflow. This allows for faster glue replenishment when the stamping plate transfers the glue to the large surface of the battery cell during movement, facilitating secondary coating.

[0013] In some embodiments, the glue storage assembly includes a first glue storage part and a second glue storage part. The first glue storage part includes a main body and a convex portion protruding from the main body along the thickness direction of the main body; the second glue storage part is constructed with a first snap-fit groove penetrating along its thickness direction; the convex portion is accommodated in the first snap-fit groove; and there is a gap between the convex portion and the groove wall of the first snap-fit groove, and the convex portion and the groove wall of the first snap-fit groove are jointly arranged to form a glue storage groove. By setting the first glue storage part to a shape of a combination of the main body and the convex portion, and making the second glue storage part have a first snap-fit groove, the glue storage groove is formed by the first snap-fit groove rubbing groove wall and the convex portion, thereby making the structure of the entire glue storage assembly relatively simple, and after use, it is also convenient to detach the two to clean the glue storage groove.

[0014] In some embodiments, the body is provided with a glue inlet hole; the glue storage assembly further includes a glue inlet tube; the glue inlet tube is connected to a side of the first glue storage member facing away from the second glue storage member; and the glue inlet tube is provided with a glue inlet channel communicating with the glue inlet hole. By providing the glue inlet tube and connecting the glue inlet hole, the end of the glue inlet tube facing away from the glue inlet hole can be connected to the glue supply assembly of the glue coating device, thereby enabling glue supply to the glue storage tank.

[0015] In some embodiments, the projection of the main body on a plane perpendicular to the depth of the glue storage tank covers the projection of the second glue storage member on a plane perpendicular to the depth of the glue storage tank. By having the projection of the main body on a plane perpendicular to the depth of the glue storage tank cover the projection of the second glue storage member on a plane perpendicular to the depth of the glue storage tank, the main body can completely cover the second glue storage member, thereby reducing the possibility of glue leakage at the end of the glue storage tank close to the main body.

[0016] In some embodiments, the projection of the second glue storage member on a plane perpendicular to the depth direction of the glue storage tank coincides with the projection of the battery to be coated on a plane perpendicular to the depth direction of the glue storage tank. The orthographic projection of the outer wall of the second glue storage member and the orthographic projection of the battery to be coated can completely coincide, so that when applying glue to the battery surface, the two can be directly aligned by overlapping them, thereby achieving higher positional accuracy of the applied glue structure during the subsequent gluing operation on the battery surface.

[0017] In some embodiments, the stamping plate is configured with a second engaging groove extending through the thickness of the stamping plate. When the stamping plate is received in the adhesive storage tank, the protrusion is at least partially received in the second engaging groove, and a gap is provided between the protrusion and the wall of the second engaging groove. By providing a gap between the protrusion and the wall of the second engaging groove, the stamping plate can move more smoothly within the adhesive storage tank along the depth of the adhesive storage tank.

[0018] In some embodiments, the minimum distance d1 between the protrusion and the wall of the second engaging groove satisfies the condition: 0.1 mm ≤ d1 ≤ 0.5 mm. By setting the minimum distance d1 between the protrusion and the wall of the second engaging groove to be greater than or equal to 0.1 mm and less than or equal to 0.5 mm, the stamping plate can move more smoothly within the glue storage tank, and the glue can also enter the side of the stamping plate away from the main body through the distance between the protrusion and the wall of the second engaging groove, thereby facilitating the glue filling operation on the side of the stamping plate away from the main body.

[0019] In some embodiments, the minimum distance d2 between the wall of the second engaging groove and the outer wall of the embossing plate and the maximum width d3 of the adhesive structure applied to the battery surface satisfy the condition: d2 ≥ d3. By setting the minimum distance d2 between the wall of the second engaging groove and the outer wall of the embossing plate to be greater than or equal to the maximum width d3 of the adhesive structure, the adhesive structure to be applied can be completely transferred by the embossing plate, which is more convenient.

[0020] In some embodiments, a gap is provided between the groove wall of the first engaging groove and the outer side wall of the stamping plate. By providing a gap between the groove wall of the first engaging groove and the outer side wall of the stamping plate, the stamping plate can move more smoothly within the glue storage tank along the depth direction of the glue storage tank.

[0021] In some embodiments, the minimum distance d4 between the groove wall of the first clamping groove and the outer wall of the stamping plate satisfies the condition: 0.1mm≤d4≤0.5mm. By setting the minimum distance d4 between the groove wall of the first clamping groove and the outer wall of the stamping plate to be greater than or equal to 0.1mm and less than or equal to 0.5mm, the stamping plate can move more smoothly within the glue storage tank, and the glue can also pass between the groove wall of the first clamping groove and the outer wall of the stamping plate to the side of the stamping plate facing away from the main body, thereby facilitating the glue filling operation on the side of the stamping plate facing away from the main body.

[0022] In some embodiments, along the depth direction of the glue storage tank, the end surface of the protrusion away from the body is flush with the end surface of the second glue storage member away from the body. By aligning the end surface of the protrusion away from the body with the end surface of the second glue storage member away from the body, the glue can be squeezed out of the glue storage tank by the movement of the stamping plate and applied to the battery surface. The side walls of the protrusion and the side walls of the second glue storage member are used to limit the glue, thereby effectively ensuring the dimensional accuracy and shape accuracy of the final glue coating structure and reducing the phenomenon of glue strip collapse in the glue coating structure.

[0023] In some embodiments, the maximum dimension h1 of the embossing plate along its own thickness direction is smaller than the minimum groove depth dimension h2 of the glue storage tank; and the maximum dimension h1 of the embossing plate along its own thickness direction is smaller than the minimum dimension h3 of the protrusion along the groove depth direction of the glue storage tank.

[0024] By making the maximum dimension h1 of the pressing plate along its own thickness direction smaller than the minimum depth dimension h2 of the glue storage tank, and the maximum dimension h1 of the pressing plate along its own thickness direction smaller than the minimum dimension h3 of the protrusion along the depth direction of the glue storage tank, when the pressing plate is accommodated in the glue storage tank, there is still space in the glue storage tank to accommodate a certain thickness of glue, thereby facilitating the subsequent movement of the pressing plate along the depth direction of the glue storage tank to push out the certain thickness of glue and apply it to the surface of the battery.

[0025] In some embodiments, along the depth direction of the glue storage tank, the maximum dimension h1 of the stamping plate along its own thickness direction, the minimum dimension h3 of the protrusion along the depth direction of the glue storage tank, and the height h4 of the glue coating structure formed by the surface of the battery satisfy the condition: h4≤h3-h1.

[0026] By limiting the height h4 of the glue coating structure to be less than or equal to the difference between the minimum dimension h3 of the protrusion along the depth direction of the glue storage tank and the maximum dimension h1 of the stamping plate along its own thickness direction, the stamping plate can push out glue greater than the height h4 of the glue coating structure when moving along the depth direction of the glue storage tank, and finally form a glue coating structure with a height h4.

[0027] On the second aspect, the present application provides a glue coating device, which includes the glue discharge device and glue supply assembly described in any of the above embodiments; the glue supply assembly is connected to the glue storage tank. When the glue coating device provided by the embodiment of the present application is used to coat the large surface of the battery with hot melt glue, the glue supply assembly outputs liquid hot melt glue into the glue storage tank. During the movement of the stamping plate along the depth direction of the glue storage tank, the hot melt glue moves under the drive of the stamping plate, and is finally formed and coated on the surface of the battery to form a glue coating structure. When the glue discharge device provided by the present application is used to coat the outer wall of the battery cell with the glue coating structure, the possibility of large-scale glue overflow caused by the gap between the glue strips when the traditional glue strips are pasted by the glue sticking equipment is reduced, and finally, it is difficult for the glue lumps to form on the large surface of the battery cell, thereby reducing the possibility of the battery cell being subjected to local stress due to direct contact and collision with the glue lumps when the battery cell expands, effectively improving the reliability of the battery cell, and realizing the automation of glue supply.

[0028] In some embodiments, the glue coating device further includes a glue discharge valve; the glue discharge valve is connected between the glue supply component and the glue storage tank.

[0029] The glue dispensing valve is equipped with a pressure-stabilizing structure and connected to a robotic arm. This pressure-stabilizing structure controls the dispensing pressure, improving the stability of the dispensing speed. The robotic arm drives the dispensing valve and dispensing device to move, thereby applying hot melt adhesive to the large surface of the battery. This application achieves hot melt adhesive application by connecting the dispensing valve to the glue inlet and using the robotic arm to drive the dispensing device. This process is highly automated and produces high production efficiency.

[0030] In some embodiments, a cooling structure is provided in the glue discharging valve to reduce the temperature of the hot melt glue flowing out of the glue discharging valve, thereby increasing the viscosity of the hot melt glue and reducing the fluidity, so as to better shape the glue and help control the glue thickness and width of the glue coating structure.

[0031] In some embodiments, the glue supply assembly includes a metering pump and a pressure plate pump. The metering pump is connected to the glue outlet valve; the pressure plate pump is connected to the end of the metering pump away from the glue outlet valve, and is used to heat the solid hot melt adhesive into a liquid state and deliver it to the metering pump.

[0032] This application sets up a metering pump and a pressure plate pump so that the hot melt adhesive can be heated and transported first during coating, and then accurately transferred to the glue outlet valve according to the required volume, and finally pushed out from the glue storage tank through the pressing plate until it reaches the large surface of the battery cell. The entire process has high transmission efficiency and accurate volume.

[0033] 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

[0034] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0035] Figure 1 Schematic diagram of the exploded structure of the battery provided in some embodiments of the present application.

[0036] Figure 2 for Figure 1 Schematic diagram of a battery cell is shown.

[0037] Figure 3 for Figure 2 Schematic diagram of a battery cell coated with a glue structure.

[0038] Figure 4 This is a first schematic diagram of a glue discharging device provided in some embodiments of the present application.

[0039] Figure 5 for Figure 4 The exploded schematic diagram of the glue discharging device is shown.

[0040] Figure 6 for Figure 5 The figure shows an assembly diagram of the first glue storage component and the second glue storage component in the glue discharging device.

[0041] Figure 7 for Figure 5 The figure shows an assembly diagram of the first glue storage component and the glue inlet pipe in the glue discharging device.

[0042] Figure 8 for Figure 7 The front view of the first glue storage component and the glue inlet pipe is shown.

[0043] Figure 9 for Figure 7 The left side view of the assembly of the first glue storage component and the glue inlet pipe is shown.

[0044] Figure 10 for Figure 5 Schematic diagram of the second glue storage component of the glue discharging device shown.

[0045] Figure 11 for Figure 5 Schematic diagram of the printing plate of the glue discharge device shown.

[0046] Figure 12 for Figure 11 Front view of the platen shown.

[0047] Figure 13 for Figure 11 Left side view of the platen shown.

[0048] The accompanying drawings in the specific implementation manner are as follows:

[0049] 1000-battery; 1100-box; 1110-first part; 1120-second part; 1200-battery unit; 1201-large surface; 1210-glue coating structure;

[0050] 100- glue discharging device;

[0051] 10-glue storage assembly; 101-glue storage tank; 102-glue inlet hole; 11-first glue storage member; 11a-body; 11b-convex portion; 12-second glue storage member; 121-first clamping groove; 13-glue inlet pipe;

[0052] 20 - press plate; 21 - circulation hole; 22 - second snap-in slot. DETAILED DESCRIPTION

[0053] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art 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" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0055] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0056] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0057] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0058] 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).

[0059] 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., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0060] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0061] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0062] In the production process of power batteries, it is generally necessary to apply adhesive strips to the outer wall of the battery cell, and then use the adhesive strips to achieve the bonding of multiple battery cells. In related technologies, most of the adhesive strips are attached to the outer wall of the battery cell by adhesive sticking equipment and arranged into a U-shaped structure. However, since there is a small gap between the adhesive strips when the adhesive sticking equipment sticks the adhesive strips, when multiple battery cells are assembled into a group in the battery box, the structural adhesive at the bottom of the box is easy to overflow upwards and flow into the large surface area of the battery cell from the gaps in the adhesive strips. When the structural adhesive solidifies into a hard colloidal block, the battery cell will directly contact and collide with the hard colloidal block when it expands, causing local stress on the battery cell, affecting the reliability of the battery cell.

[0063] Based on the above considerations, in order to solve the problem of large-scale glue overflow in battery cells when they are assembled into groups in a battery box, the present application provides a glue dispensing device, which drives the glue to move through the pressing plate of the glue dispensing device, and then finally forms and coats the glue on the battery surface to form a glue coating structure. This reduces the possibility of large-scale glue overflow caused by the gap between the glue strips when the traditional glue strips are applied by glue sticking equipment, and ultimately makes it difficult for glue lumps to form on the large surfaces of the battery cells, thereby reducing the possibility of local stress on the battery cells caused by direct contact and collision with the glue lumps when the battery cells expand, effectively improving the reliability of the battery cells.

[0064] The power battery finally prepared by coating the large surface of the battery cell with hot melt adhesive using the adhesive dispensing device disclosed in the embodiments of the present application can be used in, but is not limited to, electrical devices such as vehicles, ships, or aircraft. Specifically, the electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, battery-powered vehicles, electric cars, ships, spacecraft, and the like. Among them, electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, and the like.

[0065] For the convenience of explanation, the following embodiments are described by taking an electrical device of one embodiment of the present application as a vehicle as an example. The vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 1000 is provided inside the vehicle, and the battery 1000 can be provided at the bottom, head or tail of the vehicle. The battery 1000 can be used to power the vehicle, for example, the battery 1000 can be used as an operating power source for the vehicle. The vehicle may also include a controller and a motor, and the controller is used to control the battery 1000 to power the motor, for example, for starting, navigating and operating power requirements of the vehicle during driving.

[0066] In some embodiments of the present application, the battery 1000 can serve not only as the operating power source of the vehicle, but also as the driving power source of the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0067] Please refer to Figure 1 and combined Figure 2 , Figure 1 Schematic diagram of the exploded structure of the battery 1000 provided in some embodiments of the present application. Figure 2 Shown Figure 1 Schematic diagram of a battery cell shown. Battery 1000 includes a housing 1100 and a battery cell 1200, with battery cell 1200 housed within housing 1100. Housing 1100 is used to provide a storage space for battery cell 1200 and can have various structures. In some embodiments, housing 1100 can include a first portion 1110 and a second portion 1120, which overlap each other and together define a storage space for battery cell 1200. The second portion 1120 may be a hollow structure with one end open, and the first portion 1110 may be a plate-like structure. The first portion 1110 covers the open side of the second portion 1120, so that the first portion 1110 and the second portion 1120 jointly define a storage space. The first portion 1110 and the second portion 1120 may also be hollow structures with one end open, with the open side of the first portion 1110 covering the open side of the second portion 1120. Of course, the box 1100 formed by the first portion 1110 and the second portion 1120 may have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0068] In the battery 1000, a battery cell 1200 refers to the smallest unit that makes up the battery 1000. There can be multiple battery cells 1200, and the multiple battery cells 1200 can be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 1200 are connected both in series and in parallel. The multiple battery cells 1200 can be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 1200 is housed in the housing 1100. Of course, the battery 1000 can also be in the form of a battery module in which multiple battery cells 1200 are first connected in series, in parallel, or in a mixed connection, and the multiple battery modules are then connected in series, in parallel, or in a mixed connection to form a whole, and then housed in the housing 1100. The battery 1000 may also include other structures. For example, the battery 1000 may also include a busbar component for achieving electrical connection between the multiple battery cells 1200.

[0069] Each battery cell 1200 may be a secondary battery or a primary battery, a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 1200 may be cylindrical, flat, rectangular, or in other shapes.

[0070] See also Figure 4-Figure 6 and combined Figure 11 and Figure 12 , Figure 4 A first schematic diagram of a glue discharging device 100 provided in some embodiments of the present application is shown. Figure 5 Shown Figure 4 The exploded schematic diagram of the glue discharging device 100 is shown. Figure 6 Shown Figure 5 The figure shows an assembly diagram of the first glue storage member 11 and the second glue storage member 12 in the glue discharging device 100. Figure 11 Shown Figure 5 FIG. 1 is a schematic diagram of the stamping plate 20 of the glue discharging device 100 . Figure 12 Shown Figure 11 The main view of the stamping plate 20 shown. Some embodiments of the present application provide a glue discharging device 100, which includes a glue storage component 10 and a stamping plate 20. The glue storage component 10 is constructed with a glue storage tank 101 that can be communicated with the surface of the battery 1000; the stamping plate 20 is accommodated in the glue storage tank 101, and a flow hole is opened on the stamping plate 20 that passes through the glue storage tank 101 in the groove depth direction, and the stamping plate 20 can move in the glue storage tank 101 in the groove depth direction of the glue storage tank 101; specifically, the groove depth direction of the glue storage tank 101 is Figure 4-Figure 6 zz' direction.

[0071] The glue storage assembly 10 can be an integrated structure or a monolithic structure composed of a plurality of parts, as long as it can form a glue storage tank 101 for accommodating glue.

[0072] The platen 20 is made of an anti-adhesive material or coated with an anti-adhesive material. For example, the platen 20 can be made by applying a Teflon coating to a metal or plastic material, which exhibits low friction, chemical resistance, high temperature resistance, and easy cleaning. Alternatively, the platen 20 can be made by applying a nano-coating to a metal or plastic material, which exhibits ultra-low friction, high wear resistance, multifunctionality, and environmental friendliness.

[0073] The flow hole 21 may be a through hole with a circular cross section, or a through hole with a square cross section or other shapes.

[0074] The platen 20 can be connected to a driving member, such as a servo motor, which drives the platen 20 to move along the depth direction of the glue storage tank 101, so that the glue in the glue storage tank 101 can be squeezed out of the glue storage tank 101 and adhered to the surface of the battery 1000. Specifically, the glue can be adhered to the large surface 1201 of the battery cell 1200 of the battery 1000.

[0075] It should be noted that the large surface 1201 of the battery cell 1200 refers to the side with a larger area in the battery cell 1200 (battery core), which is usually in close contact with the current collector (such as aluminum foil or copper foil) and is connected to the external circuit through the tab.

[0076] In some embodiments, the adhesive applied to the large surface 1201 of the battery cell 1200 is a hot melt adhesive. It should be noted that hot melt adhesive is an adhesive that becomes liquid or viscous when heated and rapidly solidifies upon cooling. It may rebound during compression, so special attention must be paid to the application pattern of the hot melt adhesive to ensure the final bonding effect. The hot melt adhesive can be made of a rubber-based adhesive, such as rubber.

[0077] Structural adhesives, unlike the hot melt adhesives used in this application, are a type of adhesive specifically designed to withstand high loads and provide high-strength bonds. They are suitable for applications requiring long-term stability and durability. They are less susceptible to rebound during compression. Materials such as polyurethane can be used for structural adhesives.

[0078] When the glue strip is applied to the large surface 1201 of the battery cell 1200 by the glue discharge device 100 provided in the embodiment of the present application, the glue first flows into the glue storage tank 101, and then, in the process of the stamping plate 20 moving along the groove depth direction of the glue storage tank 101, the glue moves driven by the stamping plate 20, and the glue in the glue storage tank 101 can flow through the flow hole 21 to the side of the stamping plate 20 away from the glue inlet hole 102, so that the glue can be applied to the side of the stamping plate 20 away from the glue inlet hole 102 more quickly, so that when it comes into contact with the large surface 1201 of the battery cell 1200 later, a more sufficient amount of glue can come into contact with the large surface 1201 of the battery cell 1200, and finally is formed and coated on the surface of the battery 1000 to form a glue coating structure 1210, and the integrity of the glue coating structure 1210 is effectively guaranteed. When the glue dispensing device 100 provided in the present application applies the glue coating structure 1210 to the outer wall of the battery cell 1200, the possibility of glue overflow on the large surface 1201 caused by the gap between the glue strips when the glue strips are pasted by traditional glue sticking equipment is reduced. Ultimately, it is less likely that a hard block of glue will form on the large surface 1201 of the battery cell 1200, thereby reducing the possibility of the battery cell 1200 being directly contacted and colliding with the hard block of glue when it expands, thereby effectively improving the reliability of the battery cell 1200.

[0079] The structure of the glue discharging device 100 is described in detail below.

[0080] See also Figure 7-10 as well as Figure 13 , Figure 7 Shown Figure 5 FIG. 1 is a schematic diagram of the assembly of the first glue storage member 11 and the glue inlet pipe 13 in the glue discharging device 100 . Figure 8 Shown Figure 7 The front view of the first glue storage member 11 and the glue inlet pipe 13 is shown. Figure 9 Shown Figure 7 The left side view of the assembly of the first glue storage member 11 and the glue inlet pipe 13 is shown. Figure 10 Shown Figure 5 FIG. 1 is a schematic diagram of the second glue storage member 12 of the glue discharging device 100 . Figure 13 Shown Figure 11 A left side view of the platen 20 is shown.

[0081] See also Figure 5 、 Figure 11 as well as Figure 12 In some embodiments, the stamping plate 20 is a continuous structure along the circumference of the glue storage tank 101.

[0082] The morphology of the continuous structure of the embossing plate 20 along the circumference of the glue storage tank 101 is compatible with the morphology of the glue coating structure 1210 applied to the large surface 1201 of the battery cell 1200. For example, when the glue coating structure 1210 is a rectangular structural frame, the morphology of the continuous structure of the embossing plate 20 along the circumference of the glue storage tank 101 is a rectangular frame structure, forming a U-shaped structure. If the glue coating structure 1210 is a triangle or any other regular or irregular polygonal structure, the morphology of the continuous structure of the embossing plate 20 along the circumference of the glue storage tank 101 is also a triangle or any other regular or irregular polygonal structure.

[0083] The present application arranges the stamping plate 20 as a continuous structure along the circumference of the glue storage tank 101, so that the glue coating structure 1210 finally transferred to the large surface 1201 of the battery cell 1200 is a continuous structure, thereby reducing the possibility that the structural glue at the bottom of the box body 1100 overflows upward and flows into the large surface 1201 area of the battery cell 1200 from the gap in the glue coating structure 1210 when the battery cell 1200 is installed in the box body 1100.

[0084] Of course, in other embodiments, the stamping plate 20 may also be a discontinuous structure along the circumference of the glue storage tank 101, so that the final glue coating structure 1210 may be a concave structure to meet different needs.

[0085] See also Figure 8 In some embodiments, the glue storage assembly 10 is constructed with a glue inlet hole 102 connected to the glue storage tank 101.

[0086] The glue inlet hole 102 may be a through hole with a circular cross section, or a through hole with a square cross section or other shapes.

[0087] By providing the glue inlet hole 102 , the glue can flow from the glue inlet hole 102 into the glue storage tank 101 , thereby facilitating the glue supply operation in the glue storage tank 101 .

[0088] In some embodiments, along a plane perpendicular to the depth direction of the glue storage tank 101, the flow hole 21 and the glue inlet hole 102 at least partially overlap; specifically, the plane perpendicular to the depth direction of the glue storage tank 101 is the plane perpendicular to the depth direction of the glue storage tank 101. Figure 5 The plane parallel to the xx'yy' plane in .

[0089] The flow hole 21 can be coaxially arranged with the glue inlet hole 102, so that the flow hole 21 and the glue inlet hole 102 at least partially overlap. By at least partially overlapping the flow hole 21 and the glue inlet hole 102, the glue entering through the glue inlet hole 102 can more easily flow through the flow hole 21 to the side of the large surface 1201 of the stamping plate 20 close to the battery cell 1200.

[0090] In some embodiments, along a plane perpendicular to the depth direction of the glue storage tank 101 , the glue inlet 102 covers the outer periphery of the flow hole 21 .

[0091] The glue inlet hole 102 and the circulation hole 21 can be coaxially arranged, and the cross-sectional dimensions of the glue inlet hole 102 can be larger than the cross-sectional dimensions of the circulation hole 21. For example, when both the glue inlet hole 102 and the circulation hole 21 are circular holes, the diameter of the glue inlet hole 102 can be larger than the diameter of the circulation hole 21. Alternatively, when the glue inlet hole 102 and the circulation hole 21 are rectangular holes, the length and width of the glue inlet hole 102 can be larger than the length and width of the circulation hole 21. Of course, one of the glue inlet hole 102 and the circulation hole 21 can also be a circular hole, and the other can be another special-shaped hole, and this is not particularly limited.

[0092] By covering the glue inlet hole 102 on the outer periphery of the flow hole 21 , the glue inlet amount is made greater than the glue outlet amount, and the glue filling operation can be performed more quickly.

[0093] See also Figure 8 In some embodiments, there are multiple glue inlet holes 102; the multiple glue inlet holes 102 are arranged at intervals. Figure 11 and Figure 12 In some embodiments, the number of the flow holes 21 is less than or equal to the number of the glue inlet holes 102 .

[0094] The number of the glue inlet holes 102 may be four. For example, the four glue inlet holes 102 may be arranged at four corners of the glue storage tank 101 .

[0095] There are two flow holes 21 , and the two flow holes 21 can be arranged diagonally, so that when the glue flows through the flow holes 21 , the impact force exerted on the stamping plate 20 is more balanced.

[0096] By setting the number of circulation holes 21 to be less than or equal to the number of glue inlet holes 102, the glue inlet amount is greater than the glue outlet amount, so that when the stamping plate 20 transfers the glue to the large surface 1201 of the battery cell 1200 during movement, the glue can be replenished more quickly, which is convenient for secondary coating.

[0097] See also Figure 5-Figure 9 In some embodiments, the glue storage assembly 10 includes a first glue storage member 11 and a second glue storage member 12. The first glue storage member 11 includes a body 11a and a protrusion 11b protruding from the body 11a along the thickness direction of the body 11a; specifically, the thickness direction of the body 11a is Figure 5-Figure 9zz 'direction; the second glue storage member 12 is constructed with a first snap-fit groove 121 extending along its thickness direction; the convex portion 11b is accommodated in the first snap-fit groove 121; and the convex portion 11b and the first snap-fit groove 121 have a gap between the groove wall, the convex portion 11b and the first snap-fit groove 121 are jointly surrounded by the groove wall to form the glue storage groove 101.

[0098] The main body 11a and the protrusion 11b can be formed as one piece, or they can be connected together by welding or bonding.

[0099] The body 11a and the protrusion 11b can be made of an anti-adhesive material or coated with an anti-adhesive material. For example, the outer surface of the body 11a and the protrusion 11b on the side near the second glue storage member 12 can be coated with a Teflon coating, which has the characteristics of low friction, chemical corrosion resistance, high temperature resistance, and easy cleaning. Alternatively, they can be coated with a nano-coating, which has the characteristics of ultra-low friction, high wear resistance, versatility, and environmental protection.

[0100] By setting the first glue storage component 11 to be a combination of the main body 11a and the protrusion 11b, and making the second glue storage component 12 have a first snap-in groove 121, the first snap-in groove 121 rubs the groove wall and the protrusion 11b to jointly form the glue storage groove 101, so that the structure of the entire glue storage assembly 10 is relatively simple, and after use, it is also convenient to disassemble the two to clean the glue storage groove 101.

[0101] See also Figure 5 、 Figure 7 as well as Figure 9 In some embodiments, a glue inlet hole 102 is constructed on the main body 11a; the glue storage assembly 10 also includes a glue inlet pipe 13; the glue inlet pipe 13 is connected to the side of the first glue storage part 11 away from the second glue storage part 12; and the glue inlet pipe 13 is constructed with a glue inlet channel connected to the glue inlet hole 102.

[0102] The glue inlet pipe 13 can be integrally formed with the first glue storage member 11, or the two can be separately processed and then bonded together by bonding or welding. The wall surface of the glue inlet channel of the glue inlet pipe 13 can also be provided with an anti-adhesion material. This prevents glue from clogging when the paint passes through the glue inlet channel into the glue storage tank 101.

[0103] By setting up the glue inlet pipe 13 and connecting the glue inlet pipe 13 with the glue inlet hole 102, the end of the glue inlet pipe 13 away from the glue inlet hole 102 can be connected to the glue supply component of the glue coating equipment, thereby realizing the glue supply operation for the glue storage tank 101.

[0104] See also Figure 4 and Figure 6In some embodiments, the projection of the main body 11a on a plane perpendicular to the depth direction of the glue storage tank 101 covers the projection of the second glue storage member 12 on a plane perpendicular to the depth direction of the glue storage tank 101. Specifically, the plane perpendicular to the depth direction of the glue storage tank 101 is the plane perpendicular to the depth direction of the glue storage tank 101. Figure 5 The plane parallel to the xx'yy' plane in .

[0105] The projection of the main body 11a on a plane perpendicular to the depth direction of the glue storage tank 101 can be rectangular, circular, or other special shapes, without any special limitation. Similarly, the projection of the second glue storage member 12 on a plane perpendicular to the depth direction of the glue storage tank 101 can also be rectangular, circular, or other special shapes.

[0106] By having the projection of the main body 11a on a plane perpendicular to the depth direction of the glue storage tank 101 cover the projection of the second glue storage component 12 on a plane perpendicular to the depth direction of the glue storage tank 101, the main body 11a can completely cover the second glue storage component 12, thereby reducing the possibility of glue leakage at the end of the glue storage tank 101 close to the main body 11a.

[0107] In some embodiments, the projection of the second glue storage member 12 on a plane perpendicular to the depth direction of the glue storage tank 101 coincides with the projection of the battery 1000 to be coated on the plane in the depth direction of the glue storage tank 101 .

[0108] The orthographic projection morphology of the outer wall of the second glue storage member 12 can completely overlap with the orthographic projection morphology of the battery 1000 to be coated, so that when the glue is applied to the surface of the battery 1000, the two can be aligned directly by overlapping them, and then when the glue application operation is performed on the surface of the battery 1000 later, the position accuracy of the coated glue structure 1210 is higher.

[0109] See also Figure 11 、 Figure 12 and combined Figure 5 In some embodiments, the stamping plate 20 is constructed with a second snap-fit groove 22 extending along its thickness direction; when the stamping plate 20 is accommodated in the glue storage tank 101, the protrusion 11b is at least partially accommodated in the second snap-fit groove 22, and there is a distance between the protrusion 11b and the groove wall of the second snap-fit groove 22.

[0110] The stamping plate 20 can be a frame-shaped structure with a hollowed-out middle portion, and the hollow portion of the frame-shaped structure forms the second engaging groove 22 .

[0111] By providing a gap between the protrusion 11 b and the wall of the second engaging groove 22 , the platen 20 can move more smoothly in the glue storage groove 101 along the depth direction of the glue storage groove 101 .

[0112] In some embodiments, the minimum distance d1 between the protrusion 11 b and the groove wall of the second engaging groove 22 satisfies the condition: 0.1 mm≤d1≤0.5 mm.

[0113] Because the platen 20 can move within the glue storage tank 101, the distance between the protrusion 11b and the wall of the second engaging groove 22 varies. By setting the minimum distance d1 between the protrusion 11b and the wall of the second engaging groove 22 to be greater than or equal to 0.1mm and less than or equal to 0.5mm, the platen 20 can move more smoothly within the glue storage tank 101. Glue can also pass through the distance between the protrusion 11b and the wall of the second engaging groove 22 to the side of the platen 20 facing away from the body 11a, facilitating glue filling operations on the side of the platen 20 facing away from the body 11a.

[0114] In some embodiments, the minimum distance d1 between the protrusion 11b and the wall of the second engaging groove 22 is 0.1 mm. In other embodiments, the minimum distance d1 between the protrusion 11b and the wall of the second engaging groove 22 is 0.5 mm. In still other embodiments, the minimum distance d1 between the protrusion 11b and the wall of the second engaging groove 22 is 0.3 mm.

[0115] In some embodiments, the minimum distance d2 between the groove wall of the second engaging groove 22 and the outer side wall of the stamping plate 20 ( Figure 12 The maximum width d3 ( Figure 3 (as shown) the condition d2 ≥ d3 is satisfied. The minimum distance d2 between the wall of the second engaging slot 22 and the outer wall of the platen 20 is the minimum width of the frame-shaped platen 20. By setting the minimum distance d2 between the wall of the second engaging slot 22 and the outer wall of the platen 20 to be greater than or equal to the maximum width d3 of the adhesive coating structure 1210, the adhesive coating structure 1210 can be completely transferred by the platen 20, which is more convenient.

[0116] In some embodiments, the minimum distance d2 between the groove wall of the second engaging groove 22 and the outer side wall of the stamping plate 20 is equal to the maximum width d3 of the adhesive coating structure 1210 .

[0117] In some other embodiments, the minimum distance d2 between the groove wall of the second engaging groove 22 and the outer side wall of the stamping plate 20 is equal to 0.8 times the maximum width d3 of the adhesive coating structure 1210 .

[0118] In some embodiments, there is a gap between the wall of the first engaging groove 121 and the outer side wall of the stamping plate 20. Figure 11 and Figure 12The outermost wall of the embossing plate 20 where the xx'yy' plane is located.

[0119] By providing a gap between the groove wall of the first engaging groove 121 and the outer side wall of the stamping plate 20 , the stamping plate 20 can move more smoothly in the glue storage groove 101 along the groove depth direction of the glue storage groove 101 .

[0120] In some embodiments, the minimum distance d4 between the slot wall of the first engaging slot 121 and the outer side wall of the stamping plate 20 satisfies the condition: 0.1 mm≤d4≤0.5 mm.

[0121] Because the platen 20 can move within the glue storage tank 101, the distance between the wall of the first engaging groove 121 and the outer wall of the platen 20 varies. By setting the minimum distance d4 between the wall of the first engaging groove 121 and the outer wall of the platen 20 to be greater than or equal to 0.1 mm and less than or equal to 0.5 mm, the platen 20 can move more smoothly within the glue storage tank 101, and the glue can also pass between the wall of the first engaging groove 121 and the outer wall of the platen 20 to the side of the platen 20 facing away from the body 11a, facilitating the glue filling operation on the side of the platen 20 facing away from the body 11a.

[0122] In some embodiments, the minimum distance d4 between the groove wall of the first engaging groove 121 and the outer wall of the platen 20 is 0.1 mm. In other embodiments, the minimum distance d4 between the groove wall of the first engaging groove 121 and the outer wall of the platen 20 is 0.5 mm. In still other embodiments, the minimum distance d4 between the groove wall of the first engaging groove 121 and the outer wall of the platen 20 is 0.3 mm.

[0123] In some embodiments, along the depth direction of the glue storage tank 101 , the end surface of the protrusion 11 b away from the body 11 a is flush with the end surface of the second glue storage member 12 away from the body 11 a .

[0124] By making the depth of the glue storage groove 101 the same as the depth of the first engaging groove 121 , the end surface of the protrusion 11 b away from the body 11 a can be flush with the end surface of the second glue storage member 12 away from the body 11 a .

[0125] The present application makes the end face of the protrusion 11b away from the main body 11a flush with the end face of the second glue storage member 12 away from the main body 11a, so that when the glue is squeezed out from the glue storage tank 101 through the movement of the stamping plate 20 and coated on the surface of the battery 1000, it can be limited by the side wall of the protrusion 11b and the side wall of the second glue storage member 12, thereby effectively ensuring the size accuracy and shape accuracy of the final coated glue structure 1210, and reducing the phenomenon of glue strip collapse in the glue structure 1210.

[0126] In some embodiments, the maximum dimension h1 of the stamping plate 20 along its thickness direction ( Figure 13 shown) is smaller than the minimum depth h2 of the glue storage tank 101 ( Figure 10 and the maximum dimension h1 of the stamping plate 20 along its own thickness direction ( Figure 13 ) is smaller than the minimum dimension h3 ( Figure 9 shown).

[0127] The maximum dimension of the platen 20 along its thickness direction is the maximum dimension along the platen 20 along its thickness direction. Figure 11 and Figure 13 The maximum dimension in the zz' direction. The minimum depth of the glue storage tank 101 is the maximum dimension in the zz' direction. Figure 10 The minimum dimension of the convex portion 11b along the depth direction of the glue storage tank 101 is the minimum dimension along the zz' direction. Figure 9 The minimum dimension in the zz' direction.

[0128] By making the maximum dimension h1 of the pressing plate 20 along its own thickness direction smaller than the minimum depth dimension h2 of the glue storage tank 101, and the maximum dimension h1 of the pressing plate 20 along its own thickness direction smaller than the minimum dimension h3 of the protrusion 11b along the depth direction of the glue storage tank 101, when the pressing plate 20 is accommodated in the glue storage tank 101, there is still space in the glue storage tank 101 to accommodate a certain thickness of glue, thereby facilitating the subsequent movement of the pressing plate 20 along the depth direction of the glue storage tank 101 to push out the certain thickness of glue and apply it to the surface of the battery 1000.

[0129] In some embodiments, along the depth direction of the glue storage tank 101, the maximum dimension h1 ( Figure 13 As shown), the minimum dimension h3 of the convex portion 11b along the depth direction of the glue storage tank 101 ( Figure 9 As shown) and the height h4 of the glue coating structure 1210 formed by coating the surface of the battery ( Figure 3 As shown) they satisfy the condition: h4≤h3-h1.

[0130] The glue coating structure 1210 needs to have a certain height, so the platen 20 needs to push out a certain thickness of glue to form the glue coating structure 1210. By limiting the height h4 of the glue coating structure 1210 to be less than or equal to the difference between the minimum dimension h3 of the protrusion 11b along the depth direction of the glue storage tank 101 and the maximum dimension h1 of the platen 20 along its own thickness, the platen 20 can push out glue greater than the height h4 of the glue coating structure 1210 when moving along the depth direction of the glue storage tank 101, thereby ultimately forming the glue coating structure 1210 with a height h4.

[0131] The glue discharging device 100 provided in the embodiment of the present application includes a glue storage component 10 and a stamping plate 20. The glue storage component 10 is constructed with a glue storage tank 101 that can be communicated with the surface of the battery 1000; the stamping plate 20 is accommodated in the glue storage tank 101 and can move in the glue storage tank 101 along the groove depth direction of the glue storage tank 101; specifically, the groove depth direction of the glue storage tank 101 is Figure 4-Figure 6 zz' direction. The stamping plate 20 is a continuous structure along the circumference of the glue storage tank 101. The stamping plate 20 is provided with a flow hole 21 that passes through the glue storage tank 101 in the groove depth direction. The glue storage assembly 10 is constructed with a glue inlet hole 102 that is connected to the glue storage tank 101. And along the plane perpendicular to the groove depth direction of the glue storage tank 101, the flow hole 21 and the glue inlet hole 102 at least partially overlap; specifically, the plane perpendicular to the groove depth direction of the glue storage tank 101 is the plane perpendicular to the groove depth direction of the glue storage tank 101. Figure 5 The number of the glue inlet holes 102 is multiple; the multiple glue inlet holes 102 are arranged at intervals. The number of the flow holes 21 is less than or equal to the number of the glue inlet holes 102. The glue storage component 10 includes a first glue storage part 11, a second glue storage part 12 and a glue inlet pipe 13. The first glue storage part 11 includes a main body 11a and a convex portion 11b protruding from the main body 11a along the thickness direction of the main body 11a; specifically, the thickness direction of the main body 11a is Figure 5-Figure 9 zz' direction in the middle; a glue inlet hole 102 is constructed on the main body 11a; the second glue storage part 12 is constructed with a first clamping groove 121 that runs through it in the thickness direction; the protrusion 11b is accommodated in the first clamping groove 121; and there is a gap between the protrusion 11b and the groove wall of the first clamping groove 121, and the protrusion 11b and the groove wall of the first clamping groove 121 together surround the glue storage tank 101. The glue inlet pipe 13 is connected to the side of the first glue storage part 11 away from the second glue storage part 12; and the glue inlet pipe 13 is constructed with a glue inlet channel connected to the glue inlet hole 102. The stamping plate 20 is constructed with a second clamping groove 22 that runs through it in the thickness direction; when the stamping plate 20 is accommodated in the glue storage tank 101, the protrusion 11b is at least partially accommodated in the second clamping groove 22, and there is a gap between the protrusion 11b and the groove wall of the second clamping groove 22. There is a distance between the groove wall of the first engaging groove 121 and the outer side wall of the stamping plate 20 .

[0132] When the glue dispensing device 100 provided in the present application is used to apply a glue strip to the large surface 1201 of the battery cell 1200, the glue first flows from the glue inlet hole 102 into the glue storage tank 101. Then, as the stamping plate 20 moves along the depth direction of the glue storage tank 101, the glue moves driven by the stamping plate 20, and is finally formed and applied to the surface of the battery 1000 to form a glue coating structure 1210. When the glue dispensing device 100 provided in the present application applies the glue coating structure 1210 to the outer wall of the battery cell 1200, the possibility of glue overflowing on the large surface 1201 due to gaps between the glue strips when applying glue strips using conventional glue applying equipment is reduced. Ultimately, it is less likely that glue lumps will form on the large surface 1201 of the battery cell 1200, thereby reducing the possibility of local stress on the battery cell 1200 caused by direct contact and collision with the glue lumps when the battery cell 1200 expands, effectively improving the reliability of the battery cell 1200. Since the stamping plate 20 is set as a continuous structure on a plane perpendicular to the depth direction of the glue storage tank 101, the glue coating structure 1210 that is finally transferred to the large surface 1201 of the battery cell 1200 is a continuous structure, which reduces the possibility of the structural glue at the bottom of the box body 1100 overflowing upward and flowing into the large surface 1201 area of the battery cell 1200 from the gap in the glue coating structure 1210 when the battery cell 1200 is installed in the box body 1100.

[0133] At the same time, since the stamping plate 20 is provided with a flow hole 21 extending along the depth direction of the glue storage tank 101, the glue in the glue storage tank 101 can flow through the flow hole 21 to the side of the stamping plate 20 away from the glue inlet hole 102, thereby allowing the glue to be applied more quickly to the side of the stamping plate 20 away from the glue inlet hole 102, facilitating subsequent contact with the large surface 1201 of the battery cell 1200. This allows a more sufficient amount of glue to contact the large surface 1201 of the battery cell 1200, effectively ensuring the integrity of the glue coating structure 1210. Furthermore, by at least partially overlapping the flow hole 21 with the glue inlet hole 102, the glue entering from the glue inlet hole 102 can more conveniently flow from the flow hole 21 to the side of the stamping plate 20 close to the large surface 1201 of the battery cell 1200. By setting the number of circulation holes 21 to be less than or equal to the number of glue inlet holes 102, the glue inlet amount is greater than the glue outlet amount, so that when the stamping plate 20 transfers the glue to the large surface 1201 of the battery cell 1200 during movement, the glue can be replenished more quickly, which is convenient for secondary coating.

[0134] Furthermore, by configuring the first glue storage member 11 to be a combination of the main body 11a and the protrusion 11b, and configuring the second glue storage member 12 to have a first snap-fit groove 121, the first snap-fit groove 121 rubs against the groove wall and the protrusion 11b to form the glue storage tank 101, thereby simplifying the structure of the entire glue storage assembly 10. Furthermore, after use, the two can be easily separated to clean the glue storage tank 101. By configuring the glue feed pipe 13 and connecting the glue feed pipe 13 to the glue feed hole 102, the glue feed pipe 13 can be connected to the glue supply assembly of the glue coating device through the end thereof facing away from the glue feed hole 102, thereby realizing the glue supply operation for the glue storage tank 101.

[0135] At the same time, by providing a gap between the protrusion 11b and the groove wall of the second snap-fit groove 22, and by providing a gap between the groove wall of the first snap-fit groove 121 and the outer wall of the stamping plate 20, the stamping plate 20 can move more smoothly in the glue storage groove 101 along the groove depth direction of the glue storage groove 101.

[0136] The present application also provides a glue coating device, which includes the glue discharging device 100 and the glue supply component described in any one of the above embodiments; the glue supply component is connected to the glue storage tank 101. When the glue coating equipment provided by the embodiment of the present application is used to coat the large surface 1201 of the battery 1000 with hot melt glue, the glue supply component inputs liquid hot melt glue into the glue storage tank 101. During the movement of the stamping plate 20 along the depth direction of the glue storage tank 101, the hot melt glue moves driven by the stamping plate 20, and the glue in the glue storage tank 101 can flow through the flow hole 21 to the side of the stamping plate 20 away from the glue inlet hole 102, thereby allowing the glue to be more quickly coated on the side of the stamping plate 20 away from the glue inlet hole 102, so that when it comes into contact with the large surface 1201 of the battery cell 1200 later, a more sufficient amount of glue can come into contact with the large surface 1201 of the battery cell 1200, and finally be formed and coated on the surface of the battery 1000 to form a glue coating structure 1210, and effectively ensure the integrity of the glue coating structure 1210. When the glue dispensing device 100 provided in the present application applies the glue coating structure 1210 to the outer wall of the battery cell 1200, the possibility of glue overflow on the large surface 1201 caused by the gap between the glue strips when the glue strips are pasted by traditional glue sticking equipment is reduced. Ultimately, it is less likely that a hard block of glue will form on the large surface 1201 of the battery cell 1200, thereby reducing the possibility of the battery cell 1200 being directly contacted and colliding with the hard block of glue when it expands, causing local stress on the battery cell 1200, effectively improving the reliability of the battery cell 1200, and realizing the automated operation of glue supply.

[0137] In some embodiments, the glue coating device further includes a glue discharge valve; the glue discharge valve is connected between the glue supply component and the glue storage tank 101.

[0138] The glue dispensing valve is equipped with a pressure-stabilizing structure and is connected to a robotic arm. The pressure-stabilizing structure controls the dispensing pressure, improving the stability of the dispensing speed. The robotic arm drives the dispensing valve and the dispensing device 100 to move, thereby completing the hot melt adhesive coating operation on the large surface 1201 of the battery 1000. This application achieves the hot melt adhesive coating operation by providing a dispensing valve between the glue supply assembly and the glue storage tank 101 and driving the dispensing device 100 to move via the robotic arm. This operation process is highly automated and has high production efficiency.

[0139] In some embodiments, a cooling structure is provided in the glue dispensing valve to reduce the temperature of the hot melt glue flowing out of the glue dispensing valve, thereby increasing the viscosity of the hot melt glue and reducing the fluidity, so as to better shape the glue, which is beneficial to control the glue thickness and width of the glue coating structure 1210.

[0140] In some embodiments, the glue supply assembly includes a metering pump and a pressure plate pump. The metering pump is connected to the glue outlet valve; the pressure plate pump is connected to the end of the metering pump away from the glue outlet valve, and is used to heat the solid hot melt adhesive into a liquid state and deliver it to the metering pump.

[0141] The metering pump is used to calculate the volume of the hot melt adhesive applied and transfer an equal amount of hot melt adhesive to the glue discharge valve according to the preset volume.

[0142] The platen pump is used to supply the adhesive, and a one-way valve and multiple heating pipes are connected between the platen pump and the metering pump. The hot melt adhesive is originally a solid. After being heated by the platen pump and then by the multiple heating pipes, it flows through the one-way valve into the metering pump.

[0143] This application sets up a metering pump and a pressure plate pump so that the hot melt adhesive can be heated and transported first when being coated, and then accurately transferred to the glue outlet valve according to the required volume, and finally pushed out from the glue storage tank 101 through the pressing plate 20 until it reaches the large surface 1201 of the battery cell 1200. The entire process has high transmission efficiency and accurate volume.

[0144] The glue coating equipment provided by the present application first heats and melts the hot melt adhesive through a pressure plate pump, so that the hot melt adhesive can be transferred to the glue outlet valve. When the hot melt adhesive passes through the cooling structure of the glue outlet valve, it can quickly cool down and its viscosity increases. When it is finally applied to the large surface 1201 of the battery cell 1200, the increased viscosity causes poor fluidity and rapid shaping, thereby controlling the thickness and width of the glue coating structure 1210 so that the glue coating structure 1210 does not sag due to excessive thickness, thereby increasing the glue width. Through the cross-sectional shape of the stamping plate 20 itself, the hot melt adhesive with a square or concave structure is applied to the large surface 1201 of the battery cell 1200 to bond another battery cell 1200, and finally stacked into a module to form the battery 1000.

[0145] The glue coating equipment provided in the embodiment of the present application includes a glue discharging device 100, a glue discharging valve and a glue supply assembly. The glue discharging device 100 includes a glue storage assembly 10 and a platen 20. The glue storage assembly 10 is constructed with a glue storage tank 101 that can be connected to the surface of the battery 1000; the platen 20 is accommodated in the glue storage tank 101 and can move in the glue storage tank 101 along the depth direction of the glue storage tank 101; the glue discharging valve is connected between the glue supply assembly and the glue storage tank 101. The glue supply assembly includes a metering pump and a pressure plate pump. The metering pump is connected to the glue discharging valve; the pressure plate pump is connected to the end of the metering pump away from the glue discharging valve, and is used to heat the solid hot melt adhesive to a liquid state and transport it to the metering pump.

[0146] When the large surface 1201 of the battery cell 1200 is coated with glue by the glue coating equipment provided in the embodiment of the present application, the pressure plate pump is used to supply glue, and a one-way valve and multiple heating tubes are connected between the pressure plate pump and the metering pump. The hot melt glue is originally solid. After being heated by the pressure plate pump and then heated by multiple heating tubes, it flows from the one-way valve to the metering pump. The metering pump is used to calculate the volume of the applied hot melt glue and transfer an equal amount of hot melt glue to the glue discharge valve according to the pre-set volume size, and then flow from the glue discharge valve to the glue storage tank 101. When the glue discharge valve connected to the robot arm is driven by the robot arm to coat the large surface 1201 of the battery cell 1200 with hot melt glue, in the process of the stamping plate 20 moving along the groove depth direction of the glue storage tank 101, the hot melt glue moves under the drive of the stamping plate 20, and is finally formed and coated on the surface of the battery 1000 to form a glue coating structure 1210. When the glue dispensing device 100 provided in the present application applies the glue coating structure 1210 to the outer wall of the battery cell 1200, the possibility of glue overflow on the large surface 1201 caused by the gap between the glue strips when the glue strips are pasted by traditional glue sticking equipment is reduced. Ultimately, it is less likely that a hard block of glue will form on the large surface 1201 of the battery cell 1200, thereby reducing the possibility of the battery cell 1200 being directly contacted and colliding with the hard block of glue when it expands, thereby effectively improving the reliability of the battery cell 1200.

[0147] 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 make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions 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 glue discharging device, characterized in that: The glue discharging device comprises: A glue storage assembly (10) is constructed with a glue storage tank (101) capable of communicating with the surface of the battery (1000); and A stamping plate (20) is accommodated in the glue storage tank (101), and a flow hole (21) is provided on the stamping plate (20) and passes through the glue storage tank (101) in the groove depth direction, and the stamping plate (20) can move in the glue storage tank (101) in the groove depth direction of the glue storage tank (101).

2. The glue discharging device according to claim 1, characterized in that: The pressing plate (20) is a continuous structure along the circumference of the glue storage tank (101).

3. The glue discharging device according to claim 1, characterized in that: The glue storage assembly (10) is provided with a glue inlet hole (102) that is in communication with the glue storage tank (101).

4. The glue discharging device according to claim 3, characterized in that: Along a plane perpendicular to the depth direction of the glue storage tank (101), the circulation hole (21) and the glue inlet hole (102) at least partially overlap.

5. The glue discharging device according to claim 3, characterized in that: Along a plane perpendicular to the depth direction of the glue storage tank (101), the glue inlet hole (102) covers the outer periphery of the circulation hole (21).

6. The glue discharging device according to claim 3, characterized in that: The number of the glue inlet holes (102) is multiple; the multiple glue inlet holes (102) are arranged at intervals; The number of the circulation holes (21) is less than or equal to the number of the glue inlet holes (102).

7. The glue discharging device according to any one of claims 1 to 6, characterized in that: The glue storage component (10) comprises: A first glue storage member (11) comprises a main body (11a) and a convex portion (11b) protruding from the main body (11a) along the thickness direction of the main body (11a); and The second glue storage member (12) is constructed with a first clamping groove (121) extending through the second glue storage member along its thickness direction; the protrusion (11b) is accommodated in the first clamping groove (121); and there is a gap between the protrusion (11b) and the groove wall of the first clamping groove (121), and the protrusion (11b) and the groove wall of the first clamping groove (121) are jointly arranged to form the glue storage groove (101).

8. The glue discharging device according to claim 7, characterized in that: The body (11a) is provided with a glue inlet hole (102); The glue storage assembly (10) further includes a glue inlet pipe (13); The glue inlet pipe (13) is connected to a side of the first glue storage part (11) facing away from the second glue storage part (12); and the glue inlet pipe (13) is configured with a glue inlet channel connected to the glue inlet hole (102).

9. The glue discharging device according to claim 7, characterized in that: The projection of the main body (11a) on a plane perpendicular to the depth direction of the glue storage tank (101) covers the projection of the second glue storage member (12) on a plane perpendicular to the depth direction of the glue storage tank (101).

10. The glue discharging device according to claim 7, characterized in that: The projection of the second glue storage member (12) on a plane perpendicular to the depth direction of the glue storage tank (101) coincides with the projection of the battery (1000) to be coated on a plane in the depth direction of the glue storage tank (101).

11. The glue discharging device according to claim 7, characterized in that: The stamping plate (20) is configured with a second snap-fitting groove (22) extending through the stamping plate along its thickness direction; When the stamping plate (20) is accommodated in the glue storage groove (101), the convex portion (11b) is at least partially accommodated in the second clamping groove (22), and there is a distance between the convex portion (11b) and the groove wall of the second clamping groove (22).

12. The glue discharging device according to claim 11, characterized in that: The minimum distance d1 between the protrusion (11b) and the groove wall of the second engaging groove (22) satisfies the condition: 0.1mm≤d1≤0.5mm.

13. The glue discharging device according to claim 11, characterized in that: The minimum distance d2 between the groove wall of the second clamping groove (22) and the outer side wall of the stamping plate (20) and the maximum width d3 of the glue coating structure (1210) formed by coating the surface of the battery (1000) meet the following conditions: d2≥d3.

14. The glue discharging device according to claim 7, characterized in that: There is a distance between the groove wall of the first clamping groove (121) and the outer side wall of the stamping plate (20).

15. The glue discharging device according to claim 14, characterized in that: The minimum distance d4 between the groove wall of the first clamping groove (121) and the outer side wall of the stamping plate (20) satisfies the condition: 0.1mm≤d4≤0.5mm.

16. The glue discharging device according to claim 7, characterized in that: Along the depth direction of the glue storage groove (101), the end surface of the convex portion (11b) away from the main body (11a) is flush with the end surface of the second glue storage member (12) away from the main body (11a).

17. The glue discharging device according to claim 7, characterized in that: The maximum dimension h1 of the embossing plate (20) along its own thickness direction is smaller than the minimum groove depth dimension h2 of the glue storage groove (101); and the maximum dimension h1 of the embossing plate (20) along its own thickness direction is smaller than the minimum dimension h3 of the convex portion (11b) along the groove depth direction of the glue storage groove (101).

18. The glue discharging device according to claim 7, characterized in that: Along the depth direction of the glue storage tank (101), the maximum dimension h1 of the stamping plate (20) along its own thickness direction, the minimum dimension h3 of the convex portion (11b) along the depth direction of the glue storage tank (101), and the height h4 of the glue coating structure (1210) formed by coating the surface of the battery (1000) satisfy the following conditions: h4≤h3-h1.

19. A glue coating device, characterized in that: The glue coating equipment includes: The glue discharging device (100) according to any one of claims 1 to 18; and Glue supply component; the glue supply component is in communication with the glue storage tank (101).

20. The gluing device according to claim 19, characterized in that: The glue coating equipment also includes a glue discharge valve; The glue outlet valve is connected between the glue supply component and the glue storage tank (101).

21. The gluing device according to claim 20, characterized in that: The glue supply component includes: A metering pump connected to the glue discharging valve; The pressure plate pump is connected to the end of the metering pump away from the glue outlet valve, and is used to heat the solid hot melt adhesive into a liquid state and transport it into the metering pump.

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