Battery pack tray, battery pack and electric device

Abstract

The application provides a battery pack tray, a battery pack and an electric device. The battery pack tray comprises a tray body, the tray body defines a containing cavity for accommodating a battery module, the tray body comprises a beam body structure enclosing the containing cavity, and the beam body structure is provided with a glue pouring flow channel; the glue pouring flow channel has a communication port in communication with the containing cavity, a glue pouring device pours glue into the containing cavity through the glue pouring flow channel; and a check mechanism is arranged in the glue pouring flow channel, and the check mechanism is used for allowing the glue to flow into the containing cavity in one direction. After the glue pouring pipe of the glue pouring device is pulled out, the check mechanism can prevent the glue from overflowing, manual plugging of the glue pouring channel is not needed, the battery module can be better fixed, and glue waste is reduced.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery pack tray, a battery pack, and an electrical device. Background Technology

[0002] A battery pack typically includes battery modules and a battery pack tray. The battery modules are usually fixed inside the battery pack tray by potting glue.

[0003] The existing potting and fixing method involves placing the battery module into the battery pack tray and then inserting a movable side plate into the potting gap between the battery module and the beam structure of the battery pack tray. The movable side plate has a potting channel that communicates with the potting gap.

[0004] During glue injection, the glue injection tube of the glue injection equipment is inserted into the glue injection port of the glue injection channel to inject glue. After the glue injection is completed, the glue injection tube is pulled out from the glue injection port, and the glue will overflow from the glue injection channel, which needs to be manually sealed, affecting production efficiency. Furthermore, because the glue overflows from the glue injection channel, the glue distribution in the glue injection gap is uneven, affecting the fixing effect on the battery module. Utility Model Content

[0005] In view of the above problems, this application provides a battery pack tray, a battery pack, and electrical equipment. By setting a check mechanism in the glue flow channel on the tray beam structure, the check mechanism prevents glue from overflowing after the glue tube of the glue injection equipment is pulled out, eliminating the need for manual sealing of the glue injection channel, which is beneficial for continuous production and improves production efficiency. At the same time, it reduces glue loss and improves the quality of glue injection and bonding of the battery module.

[0006] In a first aspect, this application provides a battery pack tray, comprising: a tray body defining a receiving cavity for accommodating a battery module, the tray body including a beam structure surrounding the receiving cavity, the beam structure having an adhesive flow channel; the adhesive flow channel having a communication port communicating with the receiving cavity, the adhesive flow channel being used to guide adhesive injected by an adhesive dispensing device to the receiving cavity via the communication port; and a check mechanism disposed within the adhesive flow channel, the check mechanism being used to allow adhesive to flow unidirectionally into the receiving cavity.

[0007] The battery pack tray of this application has a check valve mechanism installed in the glue flow channel on the tray beam structure. After the glue filling of the battery pack is completed, the glue filling tube of the glue filling equipment is pulled out of the glue injection channel. The check valve mechanism prevents the glue from overflowing, which can reduce glue loss, make the glue evenly distributed, and have a good fixing effect on the battery module. At the same time, since the glue will not overflow from the glue injection channel, there is no need to manually block the glue injection channel, which is conducive to continuous production and improves the production efficiency of the battery pack.

[0008] In some embodiments, the receiving cavity is adapted to be provided with a colloid encapsulation component, the colloid encapsulation component is adapted to form a glue-filling cavity communicating with the communication port with the beam structure, and the glue-filling device is adapted to inject glue liquid into the glue-filling cavity through the glue-filling channel.

[0009] According to some embodiments of this application, the gel package includes a glue-filled bag.

[0010] In some embodiments, the glue channel further includes a liquid inlet; the glue channel includes a liquid inlet space located between the liquid inlet and the check valve, and a glue filling space located between the check valve and the connecting port, the liquid inlet space being adapted to connect to the glue filling device, and the glue in the liquid inlet space flowing to the glue filling space through the check valve.

[0011] According to some embodiments of this application, the check valve is configured to connect the liquid inlet space and the glue filling space when the pressure in the liquid inlet space is greater than the pressure in the glue filling space, and to cut off the liquid inlet space and the glue filling space when the pressure in the liquid inlet space is less than the pressure in the glue filling space.

[0012] According to some embodiments of this application, the check valve defines a valve channel along the extension direction of the glue flow channel and close to the glue space. The projected cross-sectional area of ​​the valve channel on a first reference section gradually increases and then gradually decreases. The first reference section is perpendicular to the centerline of the valve channel.

[0013] According to some embodiments of this application, the valve channel includes a first end away from the potting space and a second end close to the potting space, the second end having a second through hole, the second through hole being elongated in shape.

[0014] According to some embodiments of this application, the width of the second via is less than or equal to 0.1 mm.

[0015] According to some embodiments of this application, in the direction from the first end to the second end, the cross-section of the check valve mechanism within a second reference section includes a first valve segment and a second valve segment connected in sequence. The first valve segment has a first center of curvature located on the side of the first valve segment facing the valve channel, and the second valve segment has a second center of curvature located on the side of the second valve segment facing away from the valve channel.

[0016] The second reference section is parallel to the extension direction of the glue channel.

[0017] In some embodiments, at least a portion of the structure of the glue channel extends along the height direction of the beam structure.

[0018] According to some embodiments of this application, the one-way valve is vertically disposed within the glue dispensing channel.

[0019] According to some embodiments of this application, one of the inner wall of the glue channel and the check valve mechanism is provided with a mounting ring groove and the other is provided with a mounting ring edge, the mounting ring edge being connected to the mounting ring groove.

[0020] According to some embodiments of this application, the mounting ring groove is disposed on the inner wall of the glue flow channel, and the mounting ring edge is disposed at the end of the check mechanism away from the glue space.

[0021] According to some embodiments of this application, the liquid inlet is located at the top of the beam structure.

[0022] According to some embodiments of this application, the distance L between the mounting annular groove and the liquid inlet is in the range of: L≥10mm; and / or, the mounting annular groove is circular, and the diameter D1 of the mounting annular groove and the diameter D2 of the liquid inlet satisfy: D1-D2≥0.3mm.

[0023] According to some embodiments of this application, the top wall of the beam structure is provided with a sealing mating surface, which is a plane.

[0024] According to some embodiments of this application, the sealing mating surface is circular, the liquid inlet is opened on the sealing mating surface, and the diameter D3 of the sealing mating surface and the diameter D2 of the liquid inlet satisfy: D3-D2≥10mm.

[0025] In some embodiments, the check mechanism includes a one-way valve.

[0026] In some embodiments, the check valve mechanism includes at least one of a silicone component and a rubber component.

[0027] Secondly, this application provides a battery pack, including: a battery module; the aforementioned battery pack tray, wherein the battery module is disposed within a receiving cavity of the battery pack tray, and an assembly gap exists between the battery module and the beam structure of the battery pack tray, wherein an adhesive flow channel on the beam structure is used to guide adhesive injected by an adhesive dispensing device to the assembly gap.

[0028] The battery pack of this application uses the aforementioned battery pack tray. During the battery pack production process, after the glue-filling tube of the glue-filling equipment is pulled out from the glue-filling channel, the glue in the glue-filling channel will not overflow due to the action of the check mechanism, resulting in no glue loss. This ensures that the glue is evenly distributed, providing a good fixing effect for the battery module and helping to extend the service life of the battery pack. At the same time, since the glue will not overflow from the glue-filling channel, there is no need to manually seal the glue-filling channel, which is conducive to continuous production and improves the production efficiency of the battery pack.

[0029] In some embodiments, the battery pack further includes an adhesive encapsulation element disposed within the assembly gap, the adhesive encapsulation element being used to encapsulate adhesive to fill the assembly gap.

[0030] Thirdly, this application provides an electrical device, including: the battery pack described above.

[0031] The electrical equipment of this application, due to the use of the aforementioned battery pack, has a more stable internal structure and a longer service life, which helps to reduce the operating cost of the electrical equipment. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the beam structure of the battery pack tray according to an embodiment of this application;

[0034] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure at point AA;

[0035] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure at point BB;

[0036] Figure 4 for Figure 3 Enlarged structural diagram at point C;

[0037] Figure 5 This is a partial structural schematic diagram of the glue dispensing channel according to an embodiment of this application;

[0038] Figure 6 This is one of the structural schematic diagrams of the check valve mechanism according to an embodiment of this application;

[0039] Figure 7 This is a second schematic diagram of the anti-return mechanism according to an embodiment of this application;

[0040] Figure 8 This is a cross-sectional view of the check valve mechanism according to an embodiment of this application.

[0041] Explanation of reference numerals in the attached figures:

[0042] 110 - Beam structure; 111 - Glue channel; 1111 - Connecting port; 1112 - Liquid inlet space; 111a - Mounting ring groove; 111b - Liquid inlet; 112 - Sealing mating surface;

[0043] 121 - Glue dispensing space;

[0044] 130 - Check valve mechanism; 131 - Valve passage; 131a - First end; 131b - Second end; 1311 - Second through hole; 132 - First valve section; 133 - Second valve section; 134 - Mounting ring edge. Detailed Implementation

[0045] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0046] The existing method of fixing the battery pack with glue involves inserting a movable side plate into the glue injection gap between the battery module and the tray beam structure after the battery module is arranged. The movable side plate has a glue flow channel that communicates with the glue injection gap.

[0047] During glue injection, the glue injection tube of the glue injection equipment is inserted into the glue injection port of the glue injection channel to inject glue. After the glue injection is completed, the glue injection tube is pulled out from the glue injection port, and the glue will overflow from the glue injection channel, which needs to be manually sealed, affecting production efficiency. Furthermore, because the glue overflows from the glue injection channel, the glue distribution in the glue injection gap is uneven, affecting the fixing effect on the battery module.

[0048] In view of this, this application provides a battery pack tray, a battery pack, and an electrical device. By incorporating a check valve mechanism within the glue dispensing channel, the mechanism prevents glue from overflowing after the glue dispensing tube of the dispensing equipment is pulled out. This eliminates the need for manual sealing of the glue dispensing channel, facilitating continuous production and improving production efficiency. Simultaneously, it reduces glue loss and provides excellent fixation for the battery module.

[0049] refer to Figures 1 to 8 In one aspect, this application provides a battery pack tray, which may include a tray body, a glue bag, and a check mechanism 130.

[0050] The tray body defines a receiving cavity for accommodating the battery module. The tray body includes a beam structure 110 that surrounds the receiving cavity, and the beam structure 110 is provided with a potting channel 111. The potting channel 111 has a connecting port 1111 that communicates with the receiving cavity. The potting equipment injects adhesive into the receiving cavity through the potting channel 111 to fix the battery module in the receiving cavity.

[0051] Understandably, the pallet body may include a base plate and a beam structure 110. The beam structure 110 may include side beams, which may include crossbeams and longitudinal beams. The side beams may enclose a receiving cavity, and the glue channel 111 may be provided on at least one of the crossbeams and longitudinal beams. Optionally, the beam structure 110 may also include an internal support beam located inside the side beams. The internal support beam may include a transverse support beam and / or a longitudinal support beam. The transverse support beam and / or the longitudinal support beam divides the receiving cavity into multiple sub-cavities, and the glue channel 111 may also be provided on at least one of the transverse support beam and the longitudinal support beam.

[0052] The check mechanism 130 is disposed in the glue channel 111. For example, the check mechanism 130 can be located at the inlet 111b of the glue channel 111. The glue dispensing equipment can be directly connected to the check mechanism 130 to dispense glue into the glue channel 111. Alternatively, the check mechanism 130 can also be disposed in the middle or lower region of the glue channel 111. Part of the glue dispensing equipment can be inserted into the glue channel 111 and dispense glue into the receiving cavity through the check mechanism 130.

[0053] The check valve 130 is used to allow the adhesive to flow into the receiving cavity in one direction. In other words, the check valve 130 only allows the adhesive to flow into the receiving cavity from the glue channel 111, and does not allow the adhesive in the receiving cavity to overflow into the glue channel 111.

[0054] For example, the check valve 130 can be an electrically controlled check valve that opens during glue dispensing and closes after dispensing to prevent glue overflow. Alternatively, to save costs, the check valve 130 can also be a valve that automatically opens or closes under the pressure in the glue dispensing channel 111 and the receiving cavity. That is, when the pressure in the glue dispensing channel 111 is greater than the pressure in the receiving cavity, the check valve 130 opens to dispense glue into the receiving cavity, and when the pressure in the receiving cavity is greater than the pressure in the glue dispensing channel 111, the check valve 130 closes under the pressure. For example, the valve can be a duckbill valve, which opens when pressure is applied to one side of the glue channel 111, while reverse pressure closes the valve port, achieving a one-way flow effect. Alternatively, the valve can be a ball valve, using a small ball moving on the valve seat to control the opening and closing of the check mechanism 130. When the pressure on one side of the glue channel 111 is high enough, the ball is pushed away from the valve seat, allowing the glue to pass through; when the pressure on one side of the glue channel 111 decreases, the ball returns to the valve seat, preventing the glue from flowing back. Of course, the check mechanism 130 can also be a diaphragm valve, a spring-loaded valve, or a check valve, etc., which will not be described in detail in this embodiment.

[0055] In the battery pack tray of this application, when the glue-filling tube of the glue-filling equipment is pulled out from the glue-filling channel after the glue-filling of the battery pack is completed, the check mechanism 130 can prevent the glue from overflowing, reduce glue loss, make the glue evenly distributed, and have a good fixing effect on the battery module. At the same time, since the glue will not overflow from the glue-filling channel, there is no need to manually block the glue-filling channel, which is conducive to continuous production and improves the production efficiency of the battery pack.

[0056] Furthermore, by integrating the design of the glue channel 111, the glue bag, and the check valve mechanism 130, the structure of the battery pack tray is simplified, making the entire glue dispensing system more compact and efficient. This not only reduces the number of parts and lowers manufacturing costs, but also facilitates the lightweighting and standardized production of the tray.

[0057] In some embodiments, a colloid encapsulation component is adapted to be disposed within the receiving cavity, the colloid encapsulation component is adapted to form a glue-filling cavity communicating with the beam structure and the communication port 1111, and the glue-filling device is adapted to inject glue liquid into the glue-filling cavity through the glue-filling flow channel.

[0058] Understandably, adhesive is injected into the adhesive channel 111 from the adhesive filling equipment. The adhesive encapsulation fills the gap between the battery module and the beam structure. After the adhesive cures, the adhesive encapsulation forms a stable support structure, enhancing the connection strength between the battery module and the tray body, and improving the overall structural stability of the battery pack. During vehicle operation, it effectively absorbs and disperses vibration energy, reducing the risk of battery module damage due to vibration.

[0059] Optionally, the gel encapsulation can be a fixed structure with a certain deformation space formed by injection molding or other processing techniques (such as epoxy resin or silicone rubber). The encapsulation is suitable for matching the gap between the battery module and the beam structure. Alternatively, the gel encapsulation can also be a flexible part. During the process of filling the potting cavity with adhesive, the gel encapsulation expands synchronously, which has a good fit with the outer surface of the battery module and is conducive to providing a good fixing effect for the battery module.

[0060] In some embodiments, the gel package may include a glue-filled bag.

[0061] The glue-filling bag can be made of flexible material so that it can adapt to the flow and distribution of the glue, ensuring that the glue and the glue-filling bag can evenly fill the gap between the battery module and the battery pack tray, providing a fixed support for the battery module.

[0062] Optionally, the glue bag can be entirely located on the side wall of the beam structure 110 facing the battery module. When the glue bag is filled with glue, it provides lateral support to the battery module. Alternatively, the glue bag can be partially located on the side wall of the beam structure 110 facing the battery module, with the other part located on the bottom plate of the tray body. When the glue bag is filled with glue, it not only provides lateral support to the battery module but also provides some vertical support.

[0063] Optionally, the glue bag can be adhered to the sidewall of the beam structure 110 facing the battery module.

[0064] In some embodiments, the glue-filling channel 111 further includes a liquid inlet; the glue-filling channel 111 may include a liquid inlet space 1112 and a glue-filling space 121. The liquid inlet space 1112 is located between the liquid inlet and the check mechanism 130, and the glue-filling space 121 is located between the check mechanism 130 and the connecting port 1111. The liquid inlet space 1112 is adapted to connect to a glue-filling device, and the glue in the liquid inlet space 1112 flows to the glue-filling space 121 through the check mechanism 130. In other words, in the direction of glue flow, the liquid inlet space 1112 is located upstream of the check mechanism 130, and the glue-filling space 121 is located downstream of the check mechanism 130. The glue flows from the liquid inlet space 1112 to the check mechanism 130, and then through the glue-filling space 121 into the glue-filling cavity, filling the glue package. Under the action of the check mechanism 130, the glue is prevented from overflowing from the glue-filling space 121 into the liquid inlet space 1112, improving the reliability of the glue-filling process.

[0065] refer to Figure 6 , Figure 7 and Figure 8According to some embodiments of this application, the check valve 130 is configured to connect the liquid inlet space 1112 and the glue filling space 121 when the pressure of the liquid inlet space 1112 is greater than the pressure of the glue filling space 121, and to cut off the liquid inlet space 1112 and the glue filling space 121 when the pressure of the liquid inlet space 1112 is less than the pressure of the glue filling space 121. In other words, during glue filling, the glue filling equipment fills the glue through the glue filling channel 111. The glue flows from the upstream side of the check mechanism 130 to the downstream side of the check mechanism 130. When the pressure on the upstream side is greater than the pressure on the downstream side, the check mechanism 130 opens, allowing the glue to be filled into the glue filling space 121. After the glue filling is completed, the glue filling equipment is pulled out from the glue filling channel 111. The pressure in the glue filling space 121 is high. At this time, the check mechanism 130 cuts off the upstream and downstream sides, automatically sealing the glue filling channel 111 after glue filling, avoiding abnormal glue loss, reducing the need for manual intervention in the battery pack production process, and helping to improve production efficiency.

[0066] refer to Figure 6 and Figure 8 According to some embodiments of this application, the check valve 130 defines a valve channel 131. Along the extension direction of the glue channel 111 and close to the glue space 121, the projected cross-sectional area of ​​the valve channel 131 on the first reference section gradually increases and then gradually decreases. The first reference section is perpendicular to the center line of the valve channel 131.

[0067] The valve passage 131 inside the check valve 130 gradually decreases in flow area towards the filling space 121, causing the adhesive to gradually increase in flow rate and pressure as it flows through this area. This design helps ensure that the adhesive is injected into the filling space 121 at an appropriate speed and pressure, avoiding both spraying and waste caused by excessively fast flow and uneven filling and poor fixation of the battery module caused by excessively slow flow.

[0068] refer to Figure 7 and Figure 8 According to some embodiments of this application, the valve channel 131 includes a first end 131a away from the potting space 121 and a second end 131b close to the potting space 121. The second end 131b has a second through hole 1311, and the cross-sectional shape of the second through hole 1311 is elongated.

[0069] On the one hand, the elongated cross-sectional shape of the second through-hole 1311 allows the adhesive to form a more stable and concentrated flow pattern when flowing through this area. This design helps reduce turbulence and eddies in the adhesive, ensuring that the adhesive can be injected into the filling space 121 in a more stable and uniform manner, thereby improving the accuracy and uniformity of the filling. On the other hand, after the filling is completed, the pressure in the filling space 121 exceeds the pressure in the filling channel 111. In other words, at this time, the pressure on the side of the second end 131b facing the first end 131a is less than the pressure on the side of the second end 131b facing the filling space 121. The elongated shape of the outlet of the second end 131b facing the filling space 121 facilitates the closure of the outlet of the second end 131b under the pressure of the adhesive in the filling space 121, improving the structural reliability of the check mechanism 130.

[0070] refer to Figure 7 According to some embodiments of this application, the width of the second through-hole 1311 is less than or equal to 0.1 mm. Exemplarily, the width of the second through-hole 1311 can be 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, or 1 mm. Of course, the width of the second through-hole 1311 can also be other values, and this embodiment does not limit this. Having a suitable width for the second through-hole 1311 has two advantages: firstly, when dispensing stops, the second through-hole 1311 can close promptly under the action of the adhesive in the dispensing space 121, ensuring the structural reliability of the check valve 130; secondly, it also helps to make the adhesive flowing through the valve channel 131 have a more stable and concentrated flow pattern, reducing turbulence and eddies, ensuring that the adhesive can be injected into the dispensing space 121 in a smooth, continuous, and uniform manner, thereby improving the stability and consistency of the dispensing process.

[0071] It should be noted that the width of the second end 131b should not be set too small, so as to avoid reducing the flow rate of adhesive through the check mechanism 130, which would reduce production efficiency.

[0072] refer to Figure 8 According to some embodiments of this application, in the direction from the first end 131a to the second end 131b, the cross section of the check mechanism 130 in the second reference section includes a first valve section 132 and a second valve section 133 connected in sequence, and the second reference section is parallel to the extension direction of the glue channel 111.

[0073] The first valve section 132 has a first center of curvature located on the side of the first valve section 132 facing the valve channel 131, and the second valve section 133 has a second center of curvature located on the side of the second valve section 133 facing away from the valve channel 131. In other words, the sidewall of the first valve section 132 protrudes into the glue-filling space 121, and the sidewall of the second valve section 133 protrudes into the glue-filling space 121. During the glue-filling process, the glue flows from the first valve section 132 to the second valve section 133 within the valve channel 131, and flows out through the second end 131b. At this time, when the glue flows through the check valve mechanism 130, it can move along a smoother and more fluid path, reducing resistance and energy consumption during the flow process, which is beneficial to improving glue-filling efficiency. After the glue is poured, the pressure of the glue in the glue space 121 is high. As the second valve section 133 near the second end 131b protrudes into the glue space 121, the deformation and closure of the second end 131b is faster, which helps to improve the response speed of the check mechanism 130 and thus improves the structural reliability of the check mechanism 130.

[0074] refer to Figures 1 to 5 In some embodiments, the glue channel 111 is along the height direction of the beam structure 110 (e.g., Figure 3 Extending in the Z direction (as shown), the adhesive can flow into the gap between the battery module and the tray beam structure 110 along a direct and efficient path, which helps to reduce the obstruction and waste of the adhesive during the flow process and improves the potting efficiency.

[0075] refer to Figure 4 and Figure 5 According to some embodiments of this application, one of the inner wall of the glue channel 111 and the check mechanism 130 is provided with a mounting ring groove 111a and the other is provided with a mounting ring edge 134, with the mounting ring edge 134 connected to the mounting ring groove 111a. Exemplarily, the mounting ring groove 111a may be located on the inner wall of the glue channel 111, and the mounting ring edge 134 may be located on the check mechanism 130. Alternatively, the mounting ring groove 111a may also be located on the check mechanism 130, in which case the mounting ring edge 134 is located on the inner wall of the glue channel 111. Through the cooperation of the mounting ring groove 111a and the mounting ring edge 134, the installation process of the check mechanism 130 becomes simpler and faster. No additional fasteners or adhesives are required; installation can be completed simply by inserting the mounting ring edge 134 of the check mechanism 130 into the mounting ring groove 111a of the glue channel 111, which is beneficial for improving the production efficiency of the battery pack. Furthermore, the matching design of the mounting ring groove 111a and the mounting ring edge 134 enables the check mechanism 130 to be firmly installed in the glue channel 111, avoiding loosening or falling off the check mechanism 130 due to vibration or impact, which helps to improve the reliability and stability of the check mechanism 130 during the glue dispensing process.

[0076] In addition, the tight fit between the mounting ring groove 111a and the mounting ring edge 134 helps to form a more reliable seal, preventing the adhesive from leaking from the gap between the check mechanism 130 and the adhesive flow channel 111 during the dispensing process.

[0077] According to some embodiments of this application, the mounting ring groove 111a is provided on the inner wall of the glue flow channel 111, and the mounting ring edge 134 is provided at the end of the check mechanism 130 away from the glue flow space 121. By arranging the mounting ring edge 134 away from the glue flow space 121, on the one hand, it is beneficial to reduce the movement distance of the mounting ring edge 134 in the glue flow channel 111 when installing the check mechanism 130, which facilitates the installation of the check mechanism 130; on the other hand, it makes the protruding mounting ring edge 134 on the check mechanism 130 spaced apart from the second through hole 1311, avoiding the mounting ring edge 134 from affecting the deformation and flow interception effect of the second through hole 1311 when the pressure is high in the glue flow space 121, thereby improving the reliability of the check mechanism 130.

[0078] refer to Figure 3 and Figure 5 According to some embodiments of this application, the glue-filling channel 111 has a liquid inlet 111b, which is located at the top of the beam structure 110. It should be noted that the receiving cavity of the battery pack tray typically has an opening for installing battery modules or other structures into the cavity. Here, the top of the beam structure 110 refers to the end of the beam structure 110 facing the opening into the receiving cavity. Positioning the liquid inlet 111b at the top of the beam structure 110 makes the glue-filling operation more intuitive and convenient. Operators can easily locate the liquid inlet 111b and inject the glue into the glue-filling channel 111 through it. This design reduces operational difficulty and helps to further improve glue-filling efficiency. Simultaneously, operators can more precisely control the injection volume and speed of the glue. By adjusting the parameters of the glue-filling equipment, precise control of the glue flow can be achieved, ensuring that the glue enters the glue-filling space 121 at appropriate pressure and flow rate.

[0079] Continue to refer to Figure 3 and Figure 5 According to some embodiments of this application, the distance L between the mounting annular groove 111a and the liquid inlet 111b is in the range of: L≥10mm; for example, L can be 10mm, 11mm, 12mm, 13mm, 14mm or 15mm, and of course, L can also be other values, which are not limited in this embodiment.

[0080] Thus, a suitable distance L is maintained between the mounting groove 111a and the inlet 111b, ensuring sufficient space between the check mechanism 130 and the inlet 111b during installation. This prevents damage or loosening of the check mechanism 130 due to overly tight installation, contributing to the stability and reliability of the check mechanism 130 installation. However, an excessively large value for L should also be avoided, as this could lead to damage to the check mechanism 130 during installation.

[0081] The mounting groove 111a is annular, and the liquid inlet 111b is circular. The diameter D1 of the mounting groove 111a and the diameter D2 of the liquid inlet 111b satisfy the following condition: D1-D2≥0.3mm. For example, D1-D2 can be 0.3mm, 0.4mm or 0.5mm. Of course, D1-D2 can also be other values, and this embodiment does not limit them.

[0082] The difference between the diameter D1 of the mounting ring groove 111a and the diameter D2 of the inlet 111b is set to be at least 0.3 mm. This design takes into account the expansion or pressure changes that may occur during the flow of the adhesive, ensuring that the adhesive will not leak from the gap between the check mechanism 130 and the dispensing channel 111, even under high pressure. This improved sealing performance enhances the reliability and stability of the dispensing process.

[0083] refer to Figure 5 According to some embodiments of this application, the top wall of the beam structure 110 is provided with a sealing mating surface 112, which is a plane. Here, the top wall of the beam structure 110 refers to the end face of the beam structure 110 facing the opening of the receiving cavity.

[0084] Generally speaking, the diameter of the dispensing tube of the dispensing equipment is smaller than the diameter of the dispensing channel 111. Therefore, a stepped sealing device needs to be installed at the dispensing port of the dispensing tube. Part of the stepped sealing device is inserted into the dispensing channel 111, and the stepped surface and the sealing mating surface 112 are sealed together to prevent glue overflow, thereby improving the reliability of the dispensing process.

[0085] Of course, in other embodiments, if the diameter of the injection tube is approximately equal to the diameter of the glue channel 111, a sealing fit can be achieved between the injection tube and the glue channel 111, and the sealing fit surface 112 does not need to be a plane.

[0086] refer to Figure 5According to some embodiments of this application, the sealing mating surface 112 is circular, and the liquid inlet 111b is formed on the sealing mating surface 112. The diameter D3 of the sealing mating surface 112 and the diameter D2 of the liquid inlet 111b satisfy the condition: D3-D2≥10mm. Exemplarily, the value of D3-D2 can be 10mm, 11mm, 12mm, 13mm, 14mm, or 15mm. Of course, the value of D3-D2 can also be other values, and this embodiment does not limit this.

[0087] By setting the sealing mating surface 112, during the dispensing process, the dispensing equipment can not only seal with the dispensing channel 111, but also seal with the sealing mating surface 112. This helps to ensure that the adhesive does not leak to the outside of the battery pack tray during the dispensing process, thereby avoiding potential safety hazards and improving the safety of the battery pack tray during use.

[0088] In some embodiments, the check mechanism 130 includes a one-way valve. The one-way valve has a compact design and is easy to integrate with the glue channel 111. For example, during the casting process of the pallet body, the one-way valve can be directly embedded inside the beam structure 110, reducing external piping connections and improving space utilization.

[0089] In some embodiments, the check mechanism 130 includes at least one of a silicone component and a rubber component. Exemplarily, the check mechanism 130 can be a silicone component, or it can also be a rubber component, or a portion of the structure of the check mechanism 130 can be a silicone component, while the remaining portion is a rubber component. Thus, both the silicone and rubber components possess good elasticity and plasticity, allowing the check mechanism 130 to tightly conform to the inner wall of the glue channel 111, forming a reliable seal between them. This helps prevent leakage of the glue during the glue-filling process, ensuring the accuracy and controllability of the glue-filling process. Simultaneously, both the silicone and rubber components have good wear resistance and corrosion resistance, enabling them to withstand pressure and temperature changes in the glue during the glue-filling process. This helps maintain the long-term stability and reliability of the check mechanism 130, reducing downtime and maintenance costs caused by damage to the check mechanism 130. Furthermore, both the silicone and rubber components have good processing performance, allowing the check mechanism 130 to be manufactured into various shapes and sizes through injection molding, compression molding, and other processes. At the same time, these materials are easy to install and remove from the glue channel 111, reducing installation difficulty and cost.

[0090] Secondly, this application provides a battery pack, which may include: the battery pack tray and the battery module described above. The beam structure 110 of the battery pack tray encloses a receiving cavity, the battery module is disposed in the receiving cavity, and there is an assembly gap between the battery module and the beam structure 110 of the battery pack tray. The glue channel 111 on the beam structure 110 is used to guide the glue injected by the glue dispensing equipment to the assembly gap.

[0091] The battery pack of this application uses the aforementioned battery pack tray. During the battery pack production process, after the glue-filling tube of the glue-filling equipment is pulled out from the glue-filling channel, the glue in the glue-filling channel will not overflow due to the action of the one-way valve, resulting in no glue loss. This ensures that the glue is evenly distributed, providing a good fixing effect for the battery module and helping to extend the service life of the battery pack. At the same time, since the glue will not overflow from the glue-filling channel, there is no need to manually seal the glue-filling channel, which is conducive to continuous production and improves the production efficiency of the battery pack.

[0092] In some embodiments, the battery pack may further include an adhesive wrapper located in the assembly gap between the battery module and the beam structure 110, and the adhesive wrapper is connected to the glue channel 111 of the battery pack tray. The adhesive wrapper is used to wrap the adhesive to fill the assembly gap.

[0093] Adhesive is injected into the injection channel 111 by the injection equipment. The adhesive flows into the injection cavity formed by the adhesive encapsulation component and the beam structure 110. The adhesive encapsulation component fills the assembly gap between the battery module and the beam structure. After the adhesive cures, the adhesive encapsulation component forms a stable support structure, enhancing the connection strength between the battery module and the tray body and improving the overall structural stability of the battery pack. During vehicle operation, it effectively absorbs and disperses vibration energy, reducing the risk of battery module damage due to vibration.

[0094] Thirdly, this application provides an electrical device, which can be an electric vehicle. The electric vehicle can be a pure electric vehicle (PEV / BEV), a range-extended electric vehicle (REEV), a hybrid electric vehicle (HEV), or a fuel cell electric vehicle. The electric vehicle can also be any vehicle equipped with a battery. In addition, the electrical device can also be a communication base station, an energy storage container, an energy storage cabinet, or other electrical equipment.

[0095] Specifically, the electrical equipment may include the aforementioned battery pack, the electrical equipment is provided with a battery compartment, the battery pack is disposed in the battery compartment, and the first connection terminal and the second connection terminal of the battery pack are respectively connected to the two ends of the circuit of the electrical equipment.

[0096] The electrical equipment of this application, due to the use of the aforementioned battery pack, has a more stable internal structure and a longer service life, which helps to reduce the operating cost of the electrical equipment.

[0097] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0098] It should be noted that the embodiments referred to in the specification, such as "one embodiment," "embodiment," "exemplary embodiment," and "some embodiments," may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0099] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0100] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0101] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery pack tray, characterized in that, include: The tray body defines a receiving cavity for accommodating a battery module. The tray body includes a beam structure surrounding the receiving cavity. The beam structure is provided with a potting channel. The potting channel has a communication port communicating with the receiving cavity. The potting channel is used to guide the adhesive injected by the potting equipment to the receiving cavity through the communication port. A check valve mechanism is provided in the glue channel to allow the glue to flow into the receiving cavity in one direction.

2. The battery pack tray according to claim 1, characterized in that, The cavity is adapted to house a colloid encapsulation component, which is adapted to form a glue-filling cavity communicating with the communication port with the beam structure. The glue-filling device is adapted to inject glue into the glue-filling cavity through the glue-filling channel.

3. The battery pack tray according to claim 2, characterized in that, The gel-filled package includes a glue-filled bag.

4. The battery pack tray according to any one of claims 1-3, characterized in that, The glue-filling channel also has a liquid inlet; The glue dispensing channel includes a liquid inlet space located between the liquid inlet and the check valve, and a glue dispensing space located between the check valve and the connecting port. The liquid inlet space is adapted to connect to the glue dispensing equipment, and the glue in the liquid inlet space flows to the glue dispensing space through the check valve.

5. The battery pack tray according to claim 4, characterized in that, The check valve is configured to connect the liquid inlet space and the glue filling space when the pressure in the liquid inlet space is greater than the pressure in the glue filling space, and to cut off the liquid inlet space and the glue filling space when the pressure in the liquid inlet space is less than the pressure in the glue filling space.

6. The battery pack tray according to claim 4, characterized in that, The check valve mechanism defines a valve channel. Along the direction from the liquid inlet space toward the glue filling space, the cross-sectional area of ​​the valve channel projected onto a first reference section gradually increases and then gradually decreases. The first reference section is perpendicular to the centerline of the valve channel.

7. The battery pack tray according to claim 6, characterized in that, The valve channel includes a first end away from the dispensing space and a second end close to the dispensing space. The second end has a second through hole, which is elongated in shape.

8. The battery pack tray according to claim 7, characterized in that, The width of the second via is less than or equal to 0.1 mm.

9. The battery pack tray according to claim 7, characterized in that, In the direction from the first end to the second end, the cross-section of the check valve mechanism within the second reference section includes a first valve segment and a second valve segment connected in sequence. The first valve segment has a first center of curvature located on the side of the first valve segment facing the valve channel, and the second valve segment has a second center of curvature located on the side of the second valve segment facing away from the valve channel. The second reference section is parallel to the extension direction of the glue channel.

10. The battery pack tray according to claim 4, characterized in that, At least a portion of the structure of the glue-filling channel extends along the height direction of the beam structure.

11. The battery pack tray according to claim 10, characterized in that, One of the inner wall of the glue dispensing channel and the check valve mechanism is provided with a mounting ring groove and the other is provided with a mounting ring edge, the mounting ring edge being connected to the mounting ring groove.

12. The battery pack tray according to claim 11, characterized in that, The mounting ring groove is located on the inner wall of the glue dispensing channel, and the mounting ring edge is located at the end of the check mechanism away from the glue dispensing space.

13. The battery pack tray according to claim 11, characterized in that, The liquid inlet is located at the top of the beam structure.

14. The battery pack tray according to claim 13, characterized in that, The distance L between the mounting annular groove and the liquid inlet is in the range of: L≥10mm; and / or, The mounting groove is circular, and the diameter D1 of the mounting groove and the diameter D2 of the liquid inlet satisfy: D1-D2≥0.3mm.

15. The battery pack tray according to claim 13, characterized in that, The top wall of the beam structure is provided with a sealing mating surface, which is a plane.

16. The battery pack tray according to claim 15, characterized in that, The sealing surface is circular, and the liquid inlet is located on the sealing surface. The diameter D3 of the sealing mating surface and the diameter D2 of the liquid inlet satisfy the following condition: D3-D2≥10mm.

17. The battery pack tray according to any one of claims 1-3, characterized in that, The check mechanism includes a one-way valve.

18. The battery pack tray according to any one of claims 1-3, characterized in that, The material of the check valve mechanism includes either silicone or rubber.

19. A battery pack, characterized in that, include: Battery module; The battery pack tray according to any one of claims 1-18, wherein the battery module is disposed in the receiving cavity of the battery pack tray, and there is an assembly gap between the battery module and the beam structure of the battery pack tray, wherein the glue channel on the beam structure is used to guide the glue injected by the glue dispensing equipment to the assembly gap.

20. The battery pack according to claim 19, characterized in that, Also includes: A gel-like encapsulation component is disposed within the assembly gap, and the gel-like encapsulation component is used to encapsulate gel to fill the assembly gap.

21. An electrical appliance, characterized in that, include: The battery pack according to claim 19 or 20.

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