Battery pack cross beam, battery pack and electric equipment

Abstract

The embodiment of the utility model provides a battery pack cross beam, a battery pack and electric equipment, and relates to the technical field of battery packs, the battery pack cross beam comprises a cross beam body, an anti-explosion valve and a protection part, a first mounting cavity is formed in the cross beam body, and the cross beam body is provided with a first opening and a second opening which are communicated with the first mounting cavity. And the anti-explosion valve is arranged in the first mounting cavity and is used for being connected with a mounting space in the battery pack through the first opening. The protection piece is arranged on the cross beam body and seals part of the second opening. According to the battery pack cross beam provided by the embodiment of the invention, the damage of external sundries to the anti-explosion valve can be effectively avoided or reduced, so that the service life of the anti-explosion valve is prolonged.

Description

Technical Field

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

[0002] Currently, battery packs are used to store and provide electrical energy, and they are widely used in new energy vehicles and other electrical equipment.

[0003] In related technologies, battery packs are typically equipped with explosion-proof valves to release gas in the event of thermal runaway.

[0004] However, the explosion-proof valves on existing battery packs are not effectively protected and are easily eroded, which can affect their service life or cause them to fail. Utility Model Content

[0005] Based on this, this application provides a battery pack crossbeam, a battery pack, and an electrical device to solve the problem that the explosion-proof valve on the existing battery pack is not effectively protected and is easily eroded, which affects its service life or causes it to fail.

[0006] In a first aspect, this application provides a battery pack crossbeam, comprising:

[0007] The crossbeam body has a first mounting cavity, and the crossbeam body has a first opening and a second opening that communicate with the first mounting cavity.

[0008] An explosion-proof valve is disposed in the first mounting cavity and is used to connect to the mounting space inside the battery pack through the first opening;

[0009] The protective component is installed on the beam body and partially closes the second opening.

[0010] In one possible implementation, the first opening is opposite to the second opening.

[0011] In one possible implementation, the protective component has at least one opening slot, which corresponds to a second opening, and the opening of the opening slot faces the ground.

[0012] In one possible implementation, the protective component includes a protective component body and at least one support portion connected to the protective component body;

[0013] The support is connected to the crossbeam body, and the second opening of the protective component body is closed.

[0014] The opening slot is located on the protective component body, and there is a gap between the side of the protective component body near the ground and the crossbeam body.

[0015] In one possible implementation, the protective component further includes at least one flange, which is connected to the support on the side opposite to the body of the protective component and is turned outward in the direction opposite to the body of the protective component. The flange is connected to the crossbeam body.

[0016] In one possible implementation, the beam body has a groove located on a portion of the periphery of the second opening, and the flange is at least partially located within the groove.

[0017] In one possible implementation, the crossbeam body is provided with a socket, which is located inside the first mounting cavity;

[0018] The socket is connected to the first opening, and part of the explosion-proof valve is inserted into the socket.

[0019] In one possible implementation, the crossbeam body is connected to a cover on the battery pack, and the crossbeam body has a sealing surface.

[0020] A retaining edge is provided on the side of the sealing surface opposite to the first opening. The retaining edge is used to cover the seal between the cover and the crossbeam body.

[0021] In one possible implementation, a limiting protrusion is provided on the sealing surface, which is used to abut against the cover body to keep the seal at a preset compression.

[0022] In one possible implementation, at least one first lifting part is provided on the crossbeam body, and the first lifting part is integrally formed with the crossbeam body;

[0023] The first lifting part is opposite to the first opening and is used to connect with the corresponding second lifting part on the vehicle.

[0024] In one possible implementation, the crossbeam body includes an integrally formed first body and a second body, the first body being used at least for connection with the bottom plate of the battery pack, and the second body being used at least for connection with the adjacent battery pack crossbeam.

[0025] The second body is disposed around a portion of the periphery of the first body to form a second mounting cavity with the first body. The second mounting cavity is used to install the part to be installed, and the first mounting cavity is located on the second body.

[0026] In one possible implementation, the second body includes a connecting segment and two curved segments, which are respectively connected to both sides of the connecting segment;

[0027] The two curved sections extend toward the same side of the connecting section to form a second mounting cavity with the connecting section and the first body.

[0028] In one possible implementation, at least one of the first body and the curved section has a first connecting portion, which is opposite to the connecting section and is used to connect to a second connecting portion on a nearby battery pack crossbeam.

[0029] In one possible implementation, the first connecting part has a first positioning part, which is used for positioning connection with a second positioning part on the connected second connecting part.

[0030] In one possible implementation, the first body has at least one third connecting portion located within the second mounting cavity and used to connect with a fourth connecting portion on the component to be mounted.

[0031] In one possible implementation, the first body has a clearance space for avoiding a portion of the base plate.

[0032] In one possible implementation, a third body is also included, which is connected to the first body and / or the curved section on the side opposite to the connecting section. The third body is used at least to stop and limit the battery module.

[0033] Secondly, this application also provides a battery pack, including any of the battery pack crossbeams provided in the first aspect.

[0034] In one possible implementation, the battery tray includes a battery module and a cover, wherein the battery tray includes a base plate and a frame.

[0035] The frame includes a front beam, a rear beam, and two side beams, at least one of the front beam, rear beam, and side beams being a battery pack crossbeam;

[0036] The front beam, rear beam and two side beams are connected in sequence to form an installation space, and the battery module is set in the installation space.

[0037] The base plate is connected to the front beam, the rear beam and the two side beams on the same side to enclose the installation space;

[0038] The cover is placed on the side of the front beam, rear beam, and two side beams away from the bottom plate to enclose the installation space.

[0039] Thirdly, this application also provides an electrical device, including any of the battery packs provided in the second aspect.

[0040] The battery pack crossbeam, battery pack, and electrical equipment provided in this application include a crossbeam body, an explosion-proof valve, and a protective component. A first mounting cavity is formed on the crossbeam body, and a first opening and a second opening communicating with the first mounting cavity are also formed on the crossbeam body to facilitate venting. The explosion-proof valve is placed in the first mounting cavity and connected to the mounting space inside the battery pack through the first opening. A protective component is provided on the crossbeam body to partially close the second opening, thereby protecting the explosion-proof valve. Therefore, the battery pack crossbeam provided in this application can effectively avoid or reduce damage to the explosion-proof valve caused by external debris, thus improving the service life of the explosion-proof valve. Attached Figure Description

[0041] 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.

[0042] Figure 1 This is a schematic diagram of the structure of the first type of battery pack crossbeam provided in the embodiments of this application;

[0043] Figure 2 An exploded view of the explosion-proof valve on the crossbeam of the battery pack provided in this embodiment of the application;

[0044] Figure 3 for Figure 2 Schematic diagram of the structure of the central protective component;

[0045] Figure 4 for Figure 2 A sectional view along section AA in the middle;

[0046] Figure 5 for Figure 2 A sectional view along section BB;

[0047] Figure 6 This is a partial structural schematic diagram of the battery tray provided in an embodiment of this application.

[0048] Figure label:

[0049] 10: Seals;

[0050] 20: Base plate;

[0051] 30: Border;

[0052] 31: Front beam;

[0053] 32: Rear end beam;

[0054] 33: Side beam;

[0055] 100: The main body of the crossbeam;

[0056] 101: First mounting cavity;

[0057] 1011: The first opening;

[0058] 1012: The second opening;

[0059] 102: Settling tank;

[0060] 103: Socket;

[0061] 104: Sealing surface;

[0062] 105: Edge guard;

[0063] 106: Limiting protrusion;

[0064] 107: First lifting joint;

[0065] 108: Second mounting cavity;

[0066] 110: First ontology;

[0067] 111: Third connecting part;

[0068] 112: Clearance space;

[0069] 120: Second entity;

[0070] 121: Connecting segment;

[0071] 122: Curved section;

[0072] 1221: First connecting part;

[0073] 1222: First positioning section;

[0074] 130: The Third Body;

[0075] 200: Explosion-proof valve;

[0076] 300: Protective components;

[0077] 301: Opening groove;

[0078] 310: Protective component body;

[0079] 320: Support section;

[0080] 330: Flanged edge. Detailed Implementation

[0081] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of methods and apparatus consistent with some aspects of this application as detailed in the appended claims.

[0082] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0083] As mentioned in the background section, the sealing gaskets at the explosion-proof valves on existing battery trays are not protected and are easily eroded by external debris such as dirt and stones, affecting their service life or causing them to fail. Furthermore, the thickness of the compressed sealing gaskets on existing battery trays is determined by the sealing bolts, limiting the range of choices and making it difficult to effectively control the thickness precision. In addition, the frames of existing battery trays are mostly welded from profiles. Firstly, the variety of profile components requires multiple profiles to be assembled through welding, resulting in numerous assembly steps and impacting production efficiency. Secondly, the profile structures are of a single shape; due to the characteristics of profile forming, complex structural contours cannot be created, making them unsuitable for installation requirements.

[0084] To address the aforementioned problems in the prior art, this application provides a battery pack crossbeam, a battery pack, and an electrical device. The battery pack crossbeam provided in this application includes a crossbeam body, an explosion-proof valve, and a protective component. By creating a first mounting cavity on the crossbeam body, and a first opening and a second opening communicating with the first mounting cavity, venting is facilitated. The explosion-proof valve is placed within the first mounting cavity and connected to the mounting space within the battery pack via the first opening. By providing a protective component on the crossbeam body to partially close the second opening, the explosion-proof valve is protected, effectively preventing or mitigating damage to the explosion-proof valve caused by external debris, thereby improving the service life of the explosion-proof valve.

[0085] The technical solutions of this application will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0086] Firstly, please refer to Figures 1-5 As shown, this application embodiment provides a battery pack crossbeam, including a crossbeam body 100, an explosion-proof valve 200, and a protective component 300.

[0087] The crossbeam body 100 has a first mounting cavity 101, and the crossbeam body 100 has a first opening 1011 and a second opening 1012 that communicate with the first mounting cavity 101.

[0088] The explosion-proof valve 200 is disposed in the first mounting cavity 101 and is used to connect to the mounting space inside the battery pack through the first opening 1011.

[0089] The protective component 300 is installed on the crossbeam body 100 and partially closes the second opening 1012.

[0090] In this embodiment, the crossbeam body 100 forms the frame of the battery tray in the battery pack. It can be a shell, solid, frame, or other structure, and can be integrally formed or assembled by welding multiple profiles. A first mounting cavity 101 is formed on the side of the crossbeam body 100 facing away from the battery pack, i.e., the outer wall of the crossbeam body 100 has a first mounting cavity 101 for mounting the explosion-proof valve 200. Furthermore, a first opening 1011 is formed on the inner wall of the crossbeam body 100, and a second opening 1012 is formed on the outer wall of the crossbeam body 100. The first opening 1011 and the second opening 1012 are respectively connected to the first mounting cavity 101. The first mounting cavity 101 communicates with the mounting space inside the battery pack through the first opening 1011, so as to release gas in the event of thermal runaway of the battery, ensuring safety and mitigating the degree of damage.

[0091] In this embodiment, the explosion-proof valve 200 can rapidly release energy during a concentrated burst of energy to prevent the battery pack from exploding. It can be connected via plug-in, screw-in, or snap-fit ​​into the first mounting cavity 101 and communicates with the battery pack through the first opening 1011. It should be noted that the specific type and specifications of the explosion-proof valve 200 can be determined according to actual needs, and the specific shape and size of the first mounting cavity 101 can be determined according to the actual installation requirements of the explosion-proof valve 200.

[0092] In this embodiment, the protective component 300 is used to protect the explosion-proof valve 200. It can be a protective plate, a stop block, a baffle, etc. The protective component 300 can be connected to the outer wall of the crossbeam body 100 by means of plug-in, screw-in, snap-fit, etc., and partially closes the second opening 1012. This ensures that the explosion-proof valve 200 can vent normally in the event of thermal runaway of the battery, thereby preventing external debris from damaging the explosion-proof valve 200. That is, the protective component 300 can have holes or grooves to ensure ventilation and prevent external dirt or other foreign objects from impacting the explosion-proof valve 200 and causing it to fail.

[0093] It is understandable that, compared to the prior art where the battery pack does not protect the explosion-proof valve 200, the application of the battery pack crossbeam in this embodiment can effectively avoid or reduce the damage caused by external debris to the explosion-proof valve 200, thereby improving the service life of the explosion-proof valve 200.

[0094] Therefore, the battery pack crossbeam provided in this embodiment includes a crossbeam body 100, an explosion-proof valve 200, and a protective member 300. By opening a first mounting cavity 101 on the crossbeam body 100 and opening a first opening 1011 and a second opening 1012 on the crossbeam body 100 that communicate with the first mounting cavity 101, it is convenient to vent air. The explosion-proof valve 200 is placed in the first mounting cavity 101 and connected to the mounting space inside the battery pack through the first opening 1011. By providing a protective member 300 on the crossbeam body 100 to close part of the second opening 1012, the explosion-proof valve 200 can be protected. This can effectively avoid or reduce the damage caused by external debris to the explosion-proof valve 200, thereby improving the service life of the explosion-proof valve 200.

[0095] In some embodiments, the first opening 1011 is opposite to the second opening 1012. Thus, as... Figure 4 As shown, this facilitates the machining of holes and the installation of the explosion-proof valve 200.

[0096] In some embodiments, the protective member 300 has at least one opening groove 301, which corresponds to the second opening 1012, and the opening of the opening groove 301 faces the ground.

[0097] Specifically, such as Figure 3 , Figure 4 As shown, the opening groove 301 can extend laterally and multiple openings can be made in the vertical direction. The openings on the opening groove 301 can face the lower inside of the first mounting cavity 101 or the lower outside of the first mounting cavity 101, that is, they all face the ground, so as to prevent external rainwater and other water from directly hitting the explosion-proof valve 200.

[0098] Of course, the opening slot 301 can also be replaced by other ventilated structures, such as vent holes or vent grilles. It should be noted that the effective exhaust area of ​​the opening slot 301 and the ventilated structure must be greater than or equal to 1.5 times the maximum opening area of ​​the explosion-proof valve 200 to ensure the normal functioning of the explosion-proof valve 200.

[0099] Furthermore, in this embodiment, the protective member 300 includes a protective member body 310 and at least one support portion 320, the support portion 320 being connected to the protective member body 310.

[0100] The support part 320 is connected to the crossbeam body 100, and the protective part body 310 closes the second opening 1012.

[0101] The opening slot 301 is located on the protective component body 310, and there is a gap between the protective component body 310 near the ground and the crossbeam body 100.

[0102] For example, such as Figure 3 As shown, the protective body 310 has a plate-like structure, and one or more openings 301 are located on the protective body 310. Two support portions 320 are connected to each other on the same side of the protective body 310.

[0103] The protective component body 310 is connected to the crossbeam body 100 by two support parts 320, such as screwing, snapping, welding, etc., and the protective component body 310 closes part of the second opening 1012. At the same time, a gap is left between the lower part of the protective component body 310 and the crossbeam body 100 to facilitate drainage and prevent dirt from entering the first mounting cavity 101 from the opening groove 301 and accumulating.

[0104] Of course, the support part 320 can also be composed of more parts. The specific number and structure can be determined according to actual needs. This embodiment does not impose too many restrictions.

[0105] Furthermore, in this embodiment, the protective member 300 also includes at least one flange portion 330, which is connected to the side of the support portion 320 away from the protective member body 310 and is turned outward in the direction away from the protective member body 310. The flange portion 330 is connected to the crossbeam body 100.

[0106] For example, such as Figure 3 As shown, the two flanges 330 are connected to the support 320 on the side away from the protective body 310, and both flanges 330 are turned outward in the direction away from each other. The flanges 330 can be connected to the crossbeam body 100 by means of screwing, snapping, welding, etc., to ensure the stability of the protective body 310 installation.

[0107] For example, a through hole is provided on the flange 330, and a bolt hole corresponding to the through hole on the crossbeam body 100 is provided on the flange 330. The bolt is tightened by passing through the through hole on the flange 330 and then tightening it with the bolt hole, which facilitates processing and assembly.

[0108] Furthermore, in this embodiment, the crossbeam body 100 is provided with a recessed groove 102, which is located on a portion of the periphery of the second opening 1012, and the flange portion 330 is at least partially located within the recessed groove 102.

[0109] Specifically, such as Figure 2 , Figure 4 As shown, the sink 102 is also the sink platform located on the periphery of the second opening 1012. The flange 330 is at least partially located in the sink 102, which facilitates the positioning of the flange 330 and makes it easy to quickly locate the flange 330 during assembly.

[0110] The specific shape and size of the settling groove 102 can be determined according to the actual flange 330. In this embodiment, no restrictions are imposed.

[0111] Furthermore, in this embodiment, the crossbeam body 100 is provided with an insertion hole 103, which is located inside the first mounting cavity 101.

[0112] The socket 103 is connected to the first opening 1011, and part of the explosion-proof valve 200 is inserted into the socket 103.

[0113] Specifically, such as Figure 4 As shown, a socket 103 is provided in the first mounting cavity 101 on the crossbeam body 100, and the socket 103 penetrates the crossbeam body 100. Correspondingly, the explosion-proof valve 200 has a plug that matches the socket 103, and the explosion-proof valve 200 is installed by plugging the plug into the socket 103.

[0114] In addition, to further ensure the stability of the explosion-proof valve 200, one or more bolt holes can be opened around the socket 103. Correspondingly, one or more through holes can be provided around the plug on the explosion-proof valve 200. Bolts are tightened into the bolt holes after passing through the through holes, making the explosion-proof valve 200 more stable.

[0115] Of course, the explosion-proof valve 200 and the crossbeam body 100 can also be replaced by other types of installation structures, as long as they can ensure the stable fixing of the explosion-proof valve 200. This can be determined according to actual needs, and no excessive restrictions are imposed in this embodiment.

[0116] In some embodiments, the crossbeam body 100 is used to connect to a cover on a battery pack, and the crossbeam body 100 has a sealing surface 104.

[0117] A retaining edge 105 is provided on the side of the sealing surface 104 opposite to the first opening 1011. The retaining edge 105 is used to cover the sealing element 10 between the cover and the crossbeam body 100.

[0118] Specifically, such as Figure 2 , Figure 4 As shown, the upper periphery of the crossbeam body 100 has a sealing surface 104. The sealing surface 104 is sealed to the cover on the battery pack through the sealing member 10 to protect the inside of the battery pack. The sealing surface 104 has an upward-facing retaining edge 105 on the side facing away from the inside of the battery pack. That is, the outer periphery of the sealing surface 104 has the retaining edge 105, which can at least block the sealing member 10 and protect the sealing member 10.

[0119] For example, the thickness of the retaining edge 105 can range from 2mm to 4mm, and the height can range from 3mm to 10mm, so that the seal 10 does not leak out and is protected from damage by external forces and direct impacts from debris such as mud and stones. The height and thickness of the retaining edge 105 can be determined according to actual needs, and are not subject to excessive restrictions in this embodiment.

[0120] Furthermore, in this embodiment, a limiting protrusion 106 is provided on the sealing surface 104. The limiting protrusion 106 is used to abut against the cover so that the sealing member 10 maintains a preset compression amount.

[0121] Specifically, such as Figure 2 , Figure 4 As shown, the sealing surface 104 has multiple limiting protrusions 106, such as frustums or truncated cones, and correspondingly, the sealing element 10 has clearance holes corresponding to the limiting protrusions 106.

[0122] In this way, after the seal 10 is placed on the sealing surface 104 of the crossbeam body 100, the cover is placed on the seal 10 to press the seal 10. When the limiting protrusion 106 passes through the clearance hole and abuts against the cover, it restricts further compression of the seal 10, thereby ensuring the preset compression amount and making the compression thickness of the seal 10 more reasonable.

[0123] For example, the limiting protrusion 106 can be 2.5mm to 6mm depending on different product requirements. Additionally, the cover body is provided with a metal collar corresponding to the limiting protrusion 106. The metal collar contacts the limiting protrusion 106, ensuring that the hardness of their mating surfaces is the same, effectively guaranteeing the accuracy of the final thickness value of the compressed sealing gasket and preventing sealing failure. The specific shape, height, and number of the limiting protrusion 106 can be determined according to actual needs; this embodiment does not impose excessive restrictions.

[0124] It should be noted that the limiting protrusion 106 can be integrally die-cast, which is convenient for processing and results in good consistency in product dimensions and precision. Of course, the limiting protrusion 106 can also be connected to the crossbeam body 100 by riveting, such as a pull riveting connection, depending on actual needs. This embodiment does not impose too many restrictions.

[0125] In some embodiments, at least one first lifting part 107 is provided on the crossbeam body 100, and the first lifting part 107 is integrally formed with the crossbeam body 100.

[0126] The first lifting part 107 is opposite to the first opening 1011 and is used to connect with the corresponding second lifting part on the vehicle.

[0127] For example, such as Figure 1As shown, the first lifting part 107 can be a lifting lug. The lifting lug is provided on the side of the crossbeam body 100 opposite to the battery pack. The lifting lug is integrally formed with the crossbeam body 100 to ensure structural strength. In addition, multiple reinforcing ribs can be provided between the lifting lug and the crossbeam body 100.

[0128] The vehicle body has a corresponding second lifting part, such as a hanging bolt, at the bottom, which facilitates a stable connection between the crossbeam body 100 and the vehicle body. Of course, other types of lifting structures can be used instead of the first lifting part 107 and the second lifting part; this embodiment does not impose too many restrictions.

[0129] In some embodiments, the crossbeam body 100 includes an integrally formed first body 110 and a second body 120, the first body 110 being at least used to connect with the base plate 20 of the battery pack, and the second body 120 being at least used to connect with the adjacent battery pack crossbeam.

[0130] The second body 120 is disposed around a portion of the periphery of the first body 110 to form a second mounting cavity 108 with the first body 110. The second mounting cavity 108 is used to install the part to be installed, and the first mounting cavity 101 is located on the second body 120.

[0131] Specifically, such as Figure 1 , Figure 6 As shown, the first body 110 is used to install components to be installed, such as power distribution components (i.e., the power distribution box of the battery pack) or part of the cooling system piping (i.e., the inlet and outlet water pipes of the cold plate). It can be a first plate, which can be connected to adjacent crossbeams (such as side beams) to form the frame of the battery tray. The first body 110 is also connected to the base plate 20 to support the battery module. The first body 110 can be made of metals such as steel and aluminum alloy, and can be formed by die casting and can be flexibly manufactured into the required structural shape.

[0132] Furthermore, the second body 120 forms part of the frame of the battery tray. It can be a second plate. The second body 120 surrounds part of the periphery of the first body 110. The second body 120 can also be made of metals such as steel and aluminum alloy. It can be die-cast and can be flexibly manufactured into the required structural shape. Moreover, the second body 120 and the first body 110 can be integrally formed, simplifying the assembly process and allowing for flexible manufacturing of the required shape. For example, if the second body 120 and the first body 110 are die-cast together, the structural strength is higher, the assembly process is simplified, the production efficiency is improved, and it is easy to flexibly process the required shape, enabling the creation of complex contours, reducing certain machining processes, and saving on tooling investment.

[0133] In this design, one side of the second body 120 is recessed in a direction parallel to the surface of the first body 110, forming a recessed portion. This creates a second mounting cavity 108 between the recessed side of the second body 120 and the surface of the first body 110. Figure 5 As shown, the second mounting cavity 108 can be used to install the component to be installed.

[0134] Furthermore, in this embodiment, the second body 120 includes a connecting segment 121 and two curved segments 122, which are respectively connected to both sides of the connecting segment 121.

[0135] The two curved sections 122 extend toward the same side of the connecting section 121 to form a second mounting cavity 108 with the connecting section 121 and the first body 110.

[0136] Specifically, such as Figure 1 As shown, the two curved segments 122 can be symmetrically arranged on both sides of the connecting segment 121 to form a recess with the connecting segment 121. The curved segments 122 can be designed into a continuous complex shape, and the transition between them and the connecting segment 121 can be achieved through an arc, reducing stress and making the shape more reasonable.

[0137] The specific shape and structure of the curved section 122 can be determined according to actual needs, and no excessive restrictions are imposed in this embodiment.

[0138] Furthermore, in this embodiment, at least one of the first body 110 and the curved section 122 has a first connecting portion 1221, which is opposite to the connecting section 121 and is used to connect with a second connecting portion on a nearby battery pack crossbeam.

[0139] It should be noted that when multiple crossbeams or side beams are connected in sequence, they can form the frame of the battery tray.

[0140] For example, such as Figure 1 , Figure 6 As shown, the first connecting part 1221 can be a first connecting surface, and the second connecting part can be a second connecting surface that matches the first connecting surface. After the second connecting surface and the first connecting surface are connected, they are then connected by welding.

[0141] Of course, the first connecting part 1221 and the second connecting part can also be replaced by other types of structures, such as snap-fit, plug-in, screw-fit, etc. Any structure that can satisfy the stable connection between the first connecting part 1221 and the second connecting part is acceptable. This embodiment does not impose too many restrictions.

[0142] Furthermore, in this embodiment, the first connecting portion 1221 has a first positioning portion 1222, which is used for positioning connection with the second positioning portion on the connected second connecting portion.

[0143] In one example, such as Figure 1 , Figure 6 As shown, the first positioning part 1222 can be a positioning protrusion, and the second positioning part can be a positioning groove that matches the positioning protrusion. When the first connecting part 1221 and the second connecting part are mated, they are positioned and connected by the positioning protrusion and the positioning groove, thereby ensuring the accuracy of the connection position and reducing the assembly difficulty.

[0144] In another example, which is not shown in the figure, the first positioning part 1222 can also be a positioning groove, and the second positioning part can also be a positioning protrusion that matches the positioning groove. When the first connecting part 1221 and the second connecting part are mated, they can also be positioned and connected by the positioning protrusion and the positioning groove, thereby ensuring the accuracy of the connection position and reducing the assembly difficulty.

[0145] Of course, the first connecting part 1221 and the second connecting part can also be replaced by other types of positioning structures, and this embodiment does not impose too many restrictions.

[0146] In some embodiments, the first body 110 has at least one third connecting portion 111, which is located in the second mounting cavity 108 and is used to connect with a fourth connecting portion on the component to be mounted.

[0147] For example, such as Figure 1 , Figure 6 As shown, the third connecting part 111 can be one or more support columns, and bolt holes are provided on the support columns. The fourth connecting part can be a mounting hole, and the part to be installed is fastened to the bolt hole by bolts passing through the mounting hole, thereby achieving a stable connection.

[0148] Of course, the third connecting part 111 can also be replaced by other types of structures, such as slots, grooves, etc. Any structure that can fix the part to be installed in the mounting cavity is acceptable, depending on the actual needs. This embodiment does not impose too many restrictions.

[0149] In some embodiments, the first body 110 has a clearance space 112, which is used to avoid a portion of the bottom plate 20.

[0150] Specifically, such as Figure 1 , Figure 6 As shown, the base plate 20 integrates cooling channels, and one side of the base plate 20 has inlet and outlet water pipe joints. In order to meet the installation requirements, part of the base plate 20 extends to the clearance space 112 so that the inlet and outlet water pipe joints are located in the second mounting cavity 108.

[0151] The specific shape and size of the clearance space 112 can be determined according to the actual installation requirements of the base plate 20, and no restrictions are imposed in this embodiment.

[0152] In some embodiments, the battery pack crossbeam provided in this application also includes a third body 130, which is connected to the first body 110 and / or the curved section 122 on the side opposite to the connecting section 121. The third body 130 is used at least to stop and limit the battery module.

[0153] Specifically, such as Figure 1 , Figure 6 As shown, the third body 130 serves two purposes: firstly, it stops and limits the battery module, separating the battery module's installation space from the second mounting cavity 108; secondly, it further strengthens the structure of the first body 110 and the second body 120.

[0154] The third body 130 can be elongated, such as a plate or frame, with its two ends connected to positions near the two first connecting portions 1221. The specific shape and structure of the third body 130 can be determined according to actual needs, and this embodiment does not impose too many restrictions.

[0155] In addition, weight reduction holes and weight reduction slots can be provided on the third body 130 to reduce the weight of the third body 130 and even the battery pack.

[0156] Secondly, embodiments of this application also provide a battery pack, including the battery pack crossbeam provided in any of the above embodiments.

[0157] The structure of the battery pack crossbeam has been described in detail in the above embodiments and will not be repeated here.

[0158] The battery pack provided in this application embodiment, by configuring a battery pack crossbeam, includes a crossbeam body 100, an explosion-proof valve 200, and a protective member 300. By opening a first mounting cavity 101 on the crossbeam body 100, and opening a first opening 1011 and a second opening 1012 on the crossbeam body 100 communicating with the first mounting cavity 101, it is convenient to vent. The explosion-proof valve 200 is placed in the first mounting cavity 101 and connected to the mounting space inside the battery pack through the first opening 1011. By providing a protective member 300 on the crossbeam body 100, the protective member 300 partially closes the second opening 1012 to protect the explosion-proof valve 200. This can effectively avoid or reduce the damage caused by external debris to the explosion-proof valve 200, thereby improving the service life of the explosion-proof valve 200.

[0159] Furthermore, in this embodiment, the battery tray, battery module, and cover are included. The battery tray includes a base plate 20 and a frame 30.

[0160] The frame 30 includes a front beam 31, a rear beam 32 and two side beams 33, at least one of the front beam 31, the rear beam 32 and the side beams 33 being a battery pack crossbeam.

[0161] The front beam 31, the rear beam 32 and the two side beams 33 are connected in sequence to form an installation space, and the battery module is arranged in the installation space.

[0162] The bottom plate 20 is respectively connected to the same sides of the front beam 31, the rear beam 32 and the two side beams 33 to enclose the installation space.

[0163] The cover body is covered on the side of the front beam 31, the rear beam 32 and the two side beams 33 that is背离 the bottom plate 20 to close the installation space.

[0164] Exemplarily, both the front beam 31 and the rear beam 32 adopt the above-mentioned battery pack cross beam, the two side beams 33 are assembled by welding profiles, the front beam 31 and the rear beam 32 are arranged at intervals along the first direction, the two side beams 33 are arranged at intervals along the second direction, the first direction is perpendicular to the second direction, and the front beam 31, the rear beam 32 and the two side beams 33 are connected end to end in sequence, thus forming a "mouth"-shaped frame, and the installation space can be formed inside the frame for installing one or more battery modules

[0165] Among them, the battery module can be connected to the installation space of the battery tray by means of bonding, clamping, screwing, etc., and multiple battery modules can be arranged side by side on the battery tray.

[0166] Moreover, the bottom plate 20 is welded to the bottoms of the front beam 31, the rear beam 32 and the two side beams 33 to support or cool the battery module. In addition, lifting lugs or the like can also be provided on the side beam 33 for connecting to the vehicle body. The cover body is covered on the side of the front beam 31, the rear beam 32 and the two side beams 33 that is背离 the bottom plate 20, and can be fixed by bolt connection to close the installation space and form the overall battery pack.

[0167] Of course, the two side beams 33 can also adopt the above-mentioned battery pack cross beam, and can be integrally die-cast, which can also reduce the welding and assembly processes and flexibly process the required structural shape. Regarding this, it can be determined according to actual needs, and no excessive restrictions are imposed in this embodiment.

[0168] In a third aspect, the embodiment of the present application further provides an electrical device, including the battery pack provided in any one of the above embodiments. Among them, the electrical device can be a new energy vehicle, an energy storage power station, etc. For example, the new energy vehicle can include a vehicle body, and the battery pack can be installed at the bottom of the vehicle body.

[0169] It should be noted that there is an unclear expression "背离" in the original text. It is recommended to check and clarify the accurate meaning for a more accurate translation.It is understood that the electrical equipment provided in this application embodiment, by configuring the above-mentioned battery pack, includes a battery pack beam, which includes a beam body 100, an explosion-proof valve 200, and a protective member 300. By opening a first mounting cavity 101 on the beam body 100, and opening a first opening 1011 and a second opening 1012 on the beam body 100 that communicate with the first mounting cavity 101, it is convenient to vent. The explosion-proof valve 200 is placed in the first mounting cavity 101 and connected to the mounting space in the battery pack through the first opening 1011. By providing a protective member 300 on the beam body 100, the protective member 300 closes part of the second opening 1012 to protect the explosion-proof valve 200. This can effectively avoid or reduce the damage caused by external debris to the explosion-proof valve 200, thereby improving the service life of the explosion-proof valve 200.

[0170] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims.

[0171] It should be understood that this application is not limited to the precise structures described above and shown in the appendix, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A battery pack crossbeam, characterized by, The utility model relates to a battery pack protection device, including: A crossbeam body (100) is provided with a first installation cavity (101) on the crossbeam body (100), and the crossbeam body (100) has a first opening (1011) and a second opening (1012) in communication with the first installation cavity (101); An explosion-proof valve (200) is arranged in the first installation cavity (101) and is used for being connected with the installation space in the battery pack through the first opening (1011); A shield (300) is arranged on the crossbeam body (100) and seals part of the second opening (1012).

2. The battery pack crossbeam of claim 1, wherein, The first opening (1011) is opposite to the second opening (1012).

3. The battery pack crossbeam of claim 1, wherein, At least one opening groove (301) is formed in the shield (300), the opening groove (301) corresponds to the second opening (1012), and the opening of the opening groove (301) faces the ground.

4. The battery pack crossbeam of claim 3, wherein, The shield (300) includes a shield body (310) and at least one support part (320), and the support part (320) is connected to the shield body (310); The support part (320) is connected to the crossbeam body (100), and the shield body (310) seals part of the second opening (1012); The opening groove (301) is located on the shield body (310), and a gap is left between the side of the shield body (310) close to the ground and the crossbeam body (100).

5. The battery pack crossbeam of claim 4, wherein, The shield (300) further includes at least one flange part (330), the flange part (330) is connected to the side of the support part (320) away from the shield body (310) and is outwardly turned away from the shield body (310), and the flange part (330) is connected to the crossbeam body (100).

6. The battery pack crossbeam of claim 5, wherein, The crossbeam body (100) is provided with a sunken groove (102), the sunken groove (102) is located on part of the circumferential side of the second opening (1012), and the flange part (330) is at least partially located in the sunken groove (102).

7. The battery pack crossbeam of claim 1, wherein, The crossbeam body (100) is provided with a jack (103) located in the first installation cavity (101); The jack (103) is in communication with the first opening (1011), and part of the explosion-proof valve (200) is inserted into the jack (103).

8. The battery pack crossbeam of claim 1, wherein, The crossbeam body (100) is used for being connected to a cover on the battery pack, and the crossbeam body (100) has a sealing surface (104); A stop part (105) is arranged on the side of the sealing surface (104) away from the first opening (1011), and the stop part (105) is used for shielding a sealing element (10) between the cover and the crossbeam body (100).

9. The battery pack crossbeam of claim 8, wherein, A limiting protrusion (106) is arranged on the sealing surface (104), and the limiting protrusion (106) is used for abutting against the cover to keep the sealing element (10) at a preset compression amount.

10. The battery pack crossbeam of claim 1, wherein, The beam body (100) is provided with at least one first lifting connecting part (107) which is integrally formed with the beam body (100); The first lifting connecting part (107) is away from the first opening (1011) and is used for connecting with a corresponding second lifting connecting part on the vehicle.

11. The battery pack crossbeam of any one of claims 1-10, wherein, The beam body (100) comprises a first body (110) and a second body (120) which are integrally formed, the first body (110) is used for connecting with at least the bottom plate (20) of the battery pack, and the second body (120) is used for connecting with at least the adjacent battery pack beam; The second body (120) surrounds part of the circumferential side of the first body (110) to form a second mounting cavity (108) with the first body (110), and the second mounting cavity (108) is used for mounting a to-be-mounted member, and the first mounting cavity (101) is located on the second body (120).

12. The battery pack crossbeam of claim 11, wherein, The second body (120) comprises a connecting section (121) and two curved sections (122), and the two curved sections (122) are connected to the two sides of the connecting section (121) respectively. The two curved sections (122) extend towards the same side of the connecting section (121) to form the second mounting cavity (108) with the connecting section (121) and the first body (110).

13. The battery pack crossbeam of claim 12, wherein, At least one of the first body (110) and the curved section (122) has a first connecting part (1221) which is away from the connecting section (121) and is used for connecting with a second connecting part on the adjacent battery pack beam.

14. The battery pack crossbeam of claim 13, wherein, The first connecting part (1221) has a first positioning part (1222) which is used for positioning connection with a second positioning part on the connected second connecting part.

15. The battery pack crossbeam of claim 11, wherein, The first body (110) has at least one third connecting part (111) which is located in the second mounting cavity (108) and is used for connecting with a fourth connecting part on the to-be-mounted member.

16. The battery pack crossbeam of claim 11, wherein, The first body (110) has a avoiding space (112) which is used for avoiding part of the bottom plate (20).

17. The battery pack crossbeam of claim 12, wherein, A third body (130) is further included, the third body (130) is connected to the first body (110) and / or the curved section (122) on the side away from the connecting section (121), and the third body (130) is used for at least stopping and positioning the battery module.

18. A battery pack, characterized by The battery pack beam according to any one of claims 1 to 17 is included.

19. The battery pack of claim 18, wherein, A battery tray, a battery module and a cover body are included, the battery tray comprises a bottom plate (20) and a frame (30); The frame (30) comprises a front end beam (31), a rear end beam (32) and two side beams (33), and at least one of the front end beam (31), the rear end beam (32) and the side beam (33) is the battery pack beam; The battery pack beam according to any one of claims 1 to 17 is included. The front end beam (31), the rear end beam (32) and the two side beams (33) are sequentially connected to form a mounting space, and the battery module is arranged in the mounting space; The bottom plate (20) is connected to the same side of the front end beam (31), the rear end beam (32) and the two side beams (33) respectively to enclose the mounting space; The cover is arranged on the side of the front end beam (31), the rear end beam (32) and the two side beams (33) away from the bottom plate (20) to close the mounting space.

20. An electrical device, comprising: The battery pack comprising the battery module according to claim 18 or 19. The battery pack comprising the battery module according to claim 18 or 19.

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