A battery module

Abstract

This application discloses a battery module, including a housing, an end plate, and a battery assembly. The housing has a mounting cavity, and the end plate is detachably connected to the housing and seals the mounting cavity. The battery assembly is disposed within the mounting cavity and detachably connected to the housing. Compared to the prior art, this application, through the detachable connection between the end plate and the housing, and the detachable installation of the battery assembly and the housing, allows for rapid assembly and replacement of the battery assembly when it is necessary to replace or repair it. This reduces maintenance difficulty and time costs. Simultaneously, the end plate seals the mounting cavity, effectively ensuring the sealing performance of the battery module and improving its maintainability, safety, and reliability.

Description

Technical Field

[0001] This application relates to the field of new energy battery technology, and in particular to a battery module. Background Technology

[0002] Equipment such as marine exploration and unmanned underwater vehicles require power supplies to operate safely for extended periods under hydrostatic pressure at depths of hundreds or even thousands of meters. Existing pressure-bearing batteries primarily employ rigid, pressure-resistant casings made of titanium alloys or stainless steel to house the battery cells and management circuitry. These are then sealed with sealing rings and encapsulated in epoxy resin. Simultaneously, the battery cells are immersed in pressure-compensating media such as silicone oil, and permanent sealing is achieved through welding or one-time clamps.

[0003] However, one-time packaging has many drawbacks: after the battery cells age or fail, the casing must be destructively opened, the whole module is scrapped, maintenance costs are high, the battery cells cannot be replaced in time, the overall module lifespan is reduced, and energy is wasted. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this application provides a battery module that can achieve the effect of detachable housing and battery components that can be quickly and repeatedly replaced.

[0005] To achieve the above objectives, this application adopts the following technical solution: A battery module includes a housing, an end plate, and a battery assembly. The housing forms a mounting cavity. The end plate is detachably connected to the housing and seals the mounting cavity. The battery assembly is disposed within the mounting cavity and is detachably connected to the housing.

[0006] In one embodiment, the housing has a main body and a fixing part. The main body has the mounting cavity. The fixing part is connected to the main body and located in the mounting cavity. The battery assembly has a clearance hole, and the battery assembly is inserted into the fixing part through the clearance hole.

[0007] In one embodiment, the battery assembly includes a locking component connected to the fixing portion and the battery assembly to restrict the separation of the battery assembly from the fixing portion.

[0008] In one embodiment, the locking component includes an abutment and a locking member. The abutment is detachably connected to the fixing part via the locking member, and the abutment abuts against the end face of the battery assembly to restrict the movement of the battery assembly.

[0009] In one embodiment, the end plate includes an end cap and an extension that are connected to each other. The end cap abuts against the outer shell, and the extension extends into the mounting cavity and abuts against the cavity wall of the mounting cavity. The end cap is sealed to the outer shell by a first sealing element, and / or the extension is sealed to the cavity wall of the mounting cavity by a second sealing element.

[0010] In one embodiment, the battery module includes a first sealing member, and an abutment surface is formed at the junction of the outer shell and the end cap. The first sealing member is disposed on the abutment surface and presses against the end cap and the outer shell.

[0011] In one embodiment, the battery module includes a second seal that presses against the wall of the extension and the mounting cavity to seal the mounting cavity.

[0012] In one embodiment, the extension and / or the cavity wall of the mounting cavity are formed with a sealing groove, and the second sealing member is disposed in the sealing groove.

[0013] In one embodiment, the battery module includes a fixing member, the end cap having a first fixing hole, and the outer casing having a second fixing hole on the end face that abuts the end cap. The fixing member passes through the first fixing hole and the second fixing hole to fix the end cap to the outer casing.

[0014] In one embodiment, the end cap portion has a receiving groove formed on the side opposite to the outer shell, the bottom of the receiving groove has the first fixing hole, and the fixing member enters the first fixing hole from the receiving groove and is housed in the receiving groove.

[0015] In one embodiment, the receiving groove is semi-enclosed around the fixing member.

[0016] In one embodiment, the edge portion of the end cap is recessed inward to form the receiving groove, and a plurality of receiving grooves are arranged around the end cap. The end cap has a first fixing hole in the receiving groove, and the abutment surface is formed at the contact point between the outer shell and the end cap. The abutment surface has a second fixing hole.

[0017] In one embodiment, the end plates are detachably connected to both opposite ends of the housing.

[0018] In one embodiment, the housing and / or the end plate are provided with lifting components for connection to a lifting device.

[0019] The beneficial effects of this application are as follows: This application provides a battery module, including a housing, an end plate, and a battery assembly. The housing has a mounting cavity, the end plate is detachably connected to the housing and seals the mounting cavity, and the battery assembly is disposed within the mounting cavity and detachably connected to the housing. Compared with the prior art, this application, through the detachable connection between the end plate and the housing, and the detachable installation of the battery assembly and the housing, allows for rapid assembly and replacement of the battery assembly when it is necessary to replace or repair it. This reduces maintenance difficulty and time costs. Simultaneously, the end plate seals the mounting cavity, effectively ensuring the sealing performance of the battery module and improving its maintainability, safety, and reliability. Attached Figure Description

[0020] Figure 1 A schematic diagram of the structure of a battery assembly according to this application is shown; Figure 2 A cross-sectional schematic diagram of a battery assembly according to this application is shown; Figure 3 An exploded view of a battery assembly according to this application is shown; Figure 4 It shows Figure 2 Enlarged view of point B in the image; Figure 5 It shows Figure 1 Enlarged view of point A in the image; Reference numerals: 1. Outer shell; 11. Mounting cavity; 12. Second fixing hole; 13. Abutment surface; 14. Main body; 15. Fixing part; 2. End plate; 21. End cap; 211. First fixing hole; 212. Receiving groove; 22. Extension; 221. Sealing groove; 3. Second sealing element; 4. Fixing element; 5. Battery assembly; 51. Clearance hole; 6. Locking component; 61. Abutment component; 62. Locking component; 7. Lifting component. Detailed Implementation

[0021] In this application, the terms "set up," "equipped with," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0022] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0024] See Figure 1 and Figure 2 This application provides a battery module including a housing 1, an end plate 2 and a battery assembly 5. The housing 1 has a mounting cavity 11. The end plate 2 is detachably connected to the housing 1 and seals the mounting cavity 11. The battery assembly 5 is disposed in the mounting cavity 11 and is detachably connected to the housing 1.

[0025] In practical applications, the outer casing 1 has an installation port that communicates with the mounting cavity 11. The installation port facilitates the insertion of the battery assembly 5 into or removal from the mounting cavity 11. The size and shape of the end plate 2 can match the installation port of the outer casing 1. The end plate 2 can be connected to the outer casing 1 by means of detachable connection such as bolts or buckles, and seals the installation port to prevent the battery assembly 5 from being affected by the external environment.

[0026] The battery assembly 5 can be an integrated unit of multiple battery cells or individual battery cells, and can be detachably connected to the inner wall of the mounting cavity 11 of the outer casing 1 by means of screws, clips, etc. In this way, when the battery module fails or the battery assembly 5 needs to be replaced, only the end plate 2 needs to be removed and the connector between the battery assembly 5 and the outer casing 1 needs to be loosened to remove the entire battery assembly 5, which greatly improves the convenience of maintenance and replacement.

[0027] Compared with the prior art, this application achieves rapid assembly and replacement of the battery module 5 by detachably connecting the end plate 2 to the housing 1 and detachably installing the battery module 5 to the housing 1. When the battery module 5 needs to be replaced or repaired, the end plate 2 can be disassembled and the battery module 5 can be taken out from the mounting cavity 11. This reduces the difficulty of maintenance and time cost. At the same time, the end plate 2 seals the mounting cavity 11, effectively ensuring the sealing performance of the battery module and improving the maintainability, safety and reliability of the battery module.

[0028] See Figure 2 and Figure 3The outer casing 1 has a main body 14 and a fixing part 15. The main body 14 has a mounting cavity 11. The fixing part 15 is connected to the main body 14 and is located in the mounting cavity 11. The battery assembly 5 has a clearance hole 51. The battery assembly 5 is inserted into the fixing part 15 through the clearance hole 51.

[0029] In practical applications, the outer casing 1 consists of a main body 14 and a fixing part 15. The main body 14 has a mounting cavity 11 formed inside to accommodate the battery assembly 5. The fixing part 15 can be a strip-shaped or columnar structure, with one end fixedly connected to the inner wall of the main body 14 and the other end located inside the mounting cavity 11, thereby forming internal support for the battery assembly 5. The battery assembly 5 has an overall frame structure, in which at least one clearance hole 51 is pre-set, the shape and position of which correspond to the fixing part 15.

[0030] During assembly, the battery assembly 5 is inserted into the fixing part 15 through the clearance hole 51. Specifically, the battery assembly 5 is inserted through the opening of the mounting cavity 11, allowing the fixing part 15 to pass through the clearance hole 51 on the battery assembly 5, thus achieving clearance and positioning of the battery assembly 5 relative to the fixing part 15. The battery assembly 5 can also be detachably connected to the outer casing 1 at other locations using screws or other fasteners. Disassembly is simple: just loosen the fasteners and pull the battery assembly 5 out along its original path, making the operation convenient and quick. This achieves rapid positioning and stable installation of the battery assembly 5, simplifies the assembly and disassembly process, improves the compactness and maintenance convenience of the module structure, and ensures reliable fixation of the battery assembly 5 within the mounting cavity 11.

[0031] See Figure 4 The battery assembly 5 includes a locking component 6, which is connected to the fixing part 15 and the battery assembly 5 to restrict the separation of the battery assembly 5 from the fixing part 15.

[0032] In practical applications, after the battery assembly 5 is fitted onto the fixing part 15 through the clearance hole 51, the locking component 6 is connected to both the fixing part 15 and the battery assembly 5 to achieve a fixed connection between the battery assembly 5 and the fixing part 15. This effectively locks the battery assembly 5, preventing it from detaching from the fixing part 15 in the insertion direction, thus limiting the separation of the battery assembly 5 from the fixing part 15. This effectively prevents the battery assembly 5 from loosening or shifting, improving the structural stability and safety of the battery module, while still retaining a convenient disassembly and assembly method, providing convenience for later maintenance and replacement.

[0033] See again Figure 3 and Figure 4 The locking component 6 includes an abutment 61 and a locking component 62. The abutment 61 is detachably connected to the fixing part 15 via the locking component 62, and the abutment 61 abuts against the end face of the battery assembly 5 to restrict the movement of the battery assembly 5.

[0034] In practical applications, the locking component 6 includes an abutment 61 and a locking component 62. The abutment 61 can be a plate-like structure, and its size can be larger than that of the fixing part 15. When installed, the abutment 61 is located on the end face of the battery assembly 5, with one side tightly against the end face of the battery assembly 5 and the other side adjacent to the fixing part 15. The locking component 62 can be fastened by screws, bolts, or quick-release clips, passing through the through hole of the abutment 61 and engaging with the threaded hole or slot of the fixing part 15 to achieve a detachable connection between the abutment 61 and the fixing part 15.

[0035] During assembly, battery component 5 is first inserted into fixing part 15 through clearance hole 51. Then, abutment 61 is attached to the end face of battery component 5 to be limited. Finally, locking member 62 securely fixes abutment 61 to fixing part 15. In this way, abutment 61 forms direct physical contact with the end face of battery component 5, effectively preventing displacement of battery component 5 within the mounting cavity 11 along the insertion direction or the opposite direction, thus achieving stable limiting of battery component 5. This design is simple in structure and convenient for installation and disassembly. The cooperation of abutment 61 and locking member 62 ensures reliable fixing of battery component 5 and facilitates quick disassembly and assembly during subsequent maintenance, improving the assembly efficiency and safety of battery module use.

[0036] See again Figure 3 and Figure 4 The end plate 2 includes an end cap 21 and an extension 22 connected to each other. The end cap 21 abuts against the outer shell 1, and the extension 22 extends into the mounting cavity 11 and abuts against the cavity wall of the mounting cavity 11. The end cap 21 is sealed to the outer shell 1 by a first sealing element, and the extension 22 is sealed to the cavity wall of the mounting cavity 11 by a second sealing element 3.

[0037] In practical applications, the end plate 2 includes an end cap portion 21 and an extension portion 22 connected to each other. The end cap portion 21 can be annular or plate-shaped, and it fits with the open end face of the housing 1. During installation, it fits tightly against the housing 1 and serves as the end closure of the battery module. The extension portion 22 extends inward from the end cap portion 21 and is inserted into the mounting cavity 11 of the housing 1. Its outer peripheral surface abuts against the cavity wall of the mounting cavity 11, forming an internal auxiliary positioning and limiting structure.

[0038] To ensure the module's internal sealing and prevent external impurities such as moisture and dust from entering the module, a first sealing element can be provided between the end cap 21 and the outer shell 1. The first sealing element can be liquid sealant or other structures, which are pressed together after assembly to achieve an effective seal.

[0039] Meanwhile, a second sealing element 3 can also be provided between the outer peripheral surface of the extension 22 and the cavity wall of the mounting cavity 11. The second sealing element 3 can also be an annular sealing ring or a foam sealing strip, installed on the outer periphery of the extension 22. When the extension 22 is inserted into the mounting cavity 11, the second sealing element 3 fits tightly against the cavity wall, further improving the sealing effect.

[0040] This embodiment achieves multi-level sealing between the end plate 2 and the outer shell 1, and between the end plate 2 extension 22 and the cavity wall through the structural design of the end cover 21 and the extension 22. This significantly improves the waterproof, dustproof and safety performance of the battery module. At the same time, the end plate 2 and the outer shell 1 are detachably connected, making the sealing components a replaceable design structure, which facilitates later maintenance and better ensures the service life and reliability of the battery assembly 5.

[0041] See again Figure 3 The battery module includes a first sealing element (not shown in the figure), and an abutment surface 13 is formed at the abutment of the outer shell 1 and the end cap 21. The first sealing element is disposed on the abutment surface 13 and presses against the end cap 21 and the outer shell 1.

[0042] In practical applications, the end of the outer casing 1 is adapted to the end cap 21, and an abutment surface 13 is provided at the position where they abut against each other. The abutment surface 13 can be an annular plane at the end of the outer casing 1 or an annular plane on the outer edge of the end cap 21, and the two cooperate to form a sealed interface. During assembly, the end plate 2 is inserted axially into the opening of the outer casing 1, and the abutment surface 13 of the end cap 21 and the outer casing 1 are pressed together. The first sealing element is compressed between the end cap 21 and the outer casing 1, forming a reliable sealing structure that can effectively prevent external moisture, dust and other impurities from entering the battery module.

[0043] The first sealing element can be made of liquid sealant with a thickness of about 0.5 mm. The liquid sealant can effectively fill the tiny gaps and uneven surfaces between the outer shell 1 and the contact surface 13 of the end cap 21, forming a continuous and dense sealing layer to prevent gas and moisture from seeping in. The thickness of 0.5 mm can ensure sealing performance without significantly increasing the assembly gap between components, which is conducive to the tight fit between the end cap and the outer shell 1 and improves the structural strength and reliability.

[0044] See again Figure 4 The battery module also includes a second seal 3, which presses against the cavity wall of the extension 22 and the mounting cavity 11 to seal the mounting cavity 11.

[0045] In practical applications, the battery module also includes a second seal 3 to further enhance the sealing effect of the mounting cavity 11. Specifically, the extension 22 of the end plate 2 is an integrally formed cylindrical or annular structure, and its outer peripheral surface is tightly fitted with the cavity wall of the mounting cavity 11 of the housing 1. The second seal 3 can be assembled on the outer peripheral surface of the extension 22. During assembly, the extension 22 is inserted into the mounting cavity 11 of the housing 1, and the second seal 3 is compressed between the extension 22 and the cavity wall. Its elastic deformation generates radial sealing force, thereby effectively preventing external media such as liquids, gases, or dust from entering the mounting cavity 11.

[0046] The second sealing element 3 can be an O-ring or a foamed silicone sealing strip, which are sealing materials with good elasticity and chemical resistance. The thickness of the second sealing element 3 can be about 5mm. The 5mm thick O-ring has greater elasticity and deformation capacity, which can effectively compensate for the tolerance between the extension 22 and the cavity wall of the mounting cavity 11, ensuring long-term sealing effect. The thicker O-ring can withstand greater pressure changes and mechanical vibrations, making it suitable for the complex working environment of the battery module and ensuring that the mounting cavity 11 is not invaded by external liquids or gases.

[0047] Through the above structure, the combination design of "liquid sealant + O-ring" adopts the most suitable sealing method for different parts to meet their sealing requirements. The liquid sealant is suitable for the interface between the end cap and the outer shell 1 where the surface gap is precise and an overall seal is required, while the O-ring is suitable for the extension 22 and the cavity wall where elastic compensation and maintainability are required. The two complement each other, which greatly improves the sealing reliability, production assembly efficiency and convenience of later maintenance of the entire battery module.

[0048] See again Figure 4 The extension 22 and / or the cavity wall of the mounting cavity 11 are formed with a sealing groove 221, and the second sealing member 3 is disposed in the sealing groove 221.

[0049] In practical applications, at least one of the end plate 2 extension 22 and the cavity wall of the housing 1 mounting cavity 11 forms a sealing groove 221 to accommodate the second sealing element 3, thereby further improving the sealing effect and structural reliability.

[0050] In this embodiment, a sealing groove 221 is provided in the extension 22 to describe in detail the arrangement of the second sealing member 3.

[0051] An annular sealing groove 221 is machined on the outer circumferential surface of the extension 22 of the end plate 2. The cross-sectional dimensions of the sealing groove 221 match those of the second sealing element 3. After the second sealing element 3 is embedded in the sealing groove 221, it is inserted into the mounting cavity 11 along with the extension 22, so that the sealing element is in close contact with the cavity wall. When the end plate 2 is installed in place, the second sealing element 3 is subjected to moderate radial compression, generating sealing stress, which effectively prevents liquid, gas or particle media from entering the mounting cavity 11 through the gap between the extension 22 and the cavity wall.

[0052] It is understandable that a sealing groove 221 can also be provided on the inner surface of the cavity wall of the mounting cavity 11. The setting method of the second sealing element 3 can be referred to the above description and will not be repeated here. For applications with higher sealing requirements, multiple sealing grooves 221 can be provided, or both the extension 22 and the cavity wall can be provided with corresponding sealing grooves 221 to accommodate multiple sealing rings and improve sealing redundancy.

[0053] See again Figure 4 The battery module includes a fixing member 4. The end cap 21 has a first fixing hole 211 and the outer shell 1 has a second fixing hole 12 on the end face that abuts against the end cap 21. The fixing member 4 passes through the first fixing hole 211 and the second fixing hole 12 to fix the end cap 21 and the outer shell 1.

[0054] In practical applications, the end cap 21 is machined with a plurality of first fixing holes 211, preferably evenly distributed around the end cap 21 or at specific positions; the end face of the outer shell 1 that abuts against the end cap 21 is provided with second fixing holes 12 corresponding to the positions of the first fixing holes 211. The fastener 4 can be a mechanical fastener such as a screw, bolt, or rivet, the size of which is adapted to the first and second fixing holes 12.

[0055] During assembly, first align the end cap 21 with the outer shell 1 so that the first fixing hole 211 and the second fixing hole 12 coincide. Then, pass the fastener 4 through the first fixing hole 211 of the end cap 21 and the second fixing hole 12 of the outer shell 1 in sequence, and firmly connect the end cap 21 and the outer shell 1 together by means of threaded connection or riveting.

[0056] It is understandable that the number and distribution of the fasteners 4 can be flexibly set according to the module strength and sealing requirements to ensure uniform force and prevent sealing failure between the end cap 21 and the outer shell 1 due to uneven pressure.

[0057] Furthermore, during the tightening of the fastener 4, the combination of the first sealing element (liquid sealant) and the second sealing element 3 (O-ring) not only achieves mechanical fastening, but also improves the sealing performance through appropriate clamping force, effectively preventing the infiltration of external media and ensuring the safe and reliable operation of the module.

[0058] Furthermore, the fastener 4 facilitates the disassembly and replacement of the end cover 21. When it is necessary to replace or repair the battery assembly 5 in the mounting cavity 11, simply remove the end cover 21 and then disassemble the locking component 6 to remove the battery assembly 5. This facilitates subsequent maintenance and repair, and improves the maintainability and service life of the module.

[0059] See Figure 5 The end cap 21 has a receiving groove 212 formed on the side away from the outer shell 1. A first fixing hole 211 is opened at the bottom of the receiving groove 212. The fixing member 4 enters the first fixing hole 211 from the receiving groove 212 and is received in the receiving groove 212.

[0060] In practical applications, a recessed receiving groove 212 is formed on the outer surface of the end cap 21 (i.e., the side facing away from the outer shell 1). The receiving groove 212 can be circular, elliptical, polygonal, or strip-shaped, etc., and the specific shape can be designed according to the actual structural requirements. The bottom of the receiving groove 212 is provided with a through hole, namely the first fixing hole 211. The first fixing hole 211 penetrates the end cap 21 and corresponds to the position of the second fixing hole 12 on the outer shell 1.

[0061] During assembly, first align the end cap 21 with the outer shell 1, making the first fixing hole 211 and the second fixing hole 12 coincide. Then, insert the fastener 4 into the first fixing hole 211 from the receiving groove 212 and continue through the corresponding second fixing hole 12 to achieve a tight connection between the end cap 21 and the outer shell 1. The head of the fastener 4 is completely contained within the receiving groove 212 and will not protrude from the outer surface of the end cap 21, thereby avoiding safety hazards such as bumps and scratches.

[0062] Understandably, the depth of the receiving groove 212 is slightly greater than or equal to the height of the head of the fastener 4 to ensure that the fastener 4 is completely contained and that the outer surface of the end cap 21 is flat. Anti-loosening washers, spring washers, and other accessories can be further installed inside the receiving groove 212 to improve the reliability of the fastening.

[0063] By providing a receiving groove 212 on the end cap 21, not only is the appearance integrity and safety of the battery module improved, but the installation, disassembly and maintenance of the fastener 4 are also facilitated. This is especially suitable for application scenarios with high requirements for structural compactness and aesthetics.

[0064] See again Figure 5 The receiving groove 212 is semi-enclosed around the fixing member 4. In practical applications, the receiving groove 212 is a semi-enclosed structure, that is, its opening faces the edge of the end cap 21 or a specific direction, forming a "U", "C" or other similar semi-enclosed shape. The bottom of the receiving groove 212 is provided with a first fixing hole 211, and the fixing member 4 can be inserted from the opening of the receiving groove 212. It is connected to the second fixing hole 12 of the outer shell 1 through the first fixing hole 211, so as to achieve the fastening of the end cap 21 and the outer shell 1.

[0065] The semi-enclosed receiving groove 212 structure allows the fastener 4 to be partially covered and protected by the groove wall of the end cap 21 when it is received, with only one side open. This facilitates tool operation and the installation and removal of the fastener 4, and also prevents the fastener 4 from accidentally falling off or being exposed, thus improving the convenience and safety of module assembly.

[0066] See again Figure 3 The edge portion of the end cap 21 is recessed inward to form a receiving groove 212. Multiple receiving grooves 212 are arranged around the end cap 21. The end cap 21 has a first fixing hole 211 in the receiving groove 212. The abutting surface 13 is formed at the contact point between the outer shell 1 and the end cap 21. The abutting surface 13 has a second fixing hole 12.

[0067] In practical applications, the edge region of the end cap 21 is provided with multiple receiving grooves 212 spaced circumferentially, each receiving groove 212 being a recessed structure into the end cap 21. The receiving grooves 212 can be rectangular, semi-circular, elliptical, or trapezoidal, and their depth and dimensions are determined according to the specifications and structural requirements of the first fixing member 4. The multiple receiving grooves 212 are evenly distributed around the periphery of the end cap 21, for example, at the four corners or at equal intervals, facilitating a stable multi-point connection between the end cap 21 and the outer shell 1.

[0068] Each receiving slot 212 has a first fixing hole 211 at its bottom, which vertically penetrates the end cap 21 and corresponds to the second fixing hole 12 of the outer casing 1. The contact area between the outer casing 1 and the end cap 21 is precision machined to form a contact surface 13. The contact surface 13 has a second fixing hole 12 pre-drilled on it, corresponding to the position of each first fixing hole 211. This enables multi-point connection between the end cap 21 and the outer casing 1, effectively improving the overall rigidity and sealing effect of the structure and preventing external impurities and moisture from entering the battery module.

[0069] See again Figure 1 Both ends of the outer casing 1 are detachably connected to end plates 2. In practical applications, end plates 2 are respectively provided at both ends of the length direction of the outer casing 1. The end plates 2 and the outer casing 1 can be detachably connected by bolts, rivets or other structures. In this way, when it is necessary to replace or repair the battery pack 5, the end plate 2 at either end can be removed, or the end plate 2 that is closer to the battery pack 5 to be replaced can be removed, which makes it easier to remove the battery pack 5 to be replaced in time and improves the efficiency of battery module maintenance.

[0070] See again Figure 1The outer casing 1 and / or end plate 2 are equipped with lifting components 7, which are used for connecting to lifting devices. In practical applications, the lifting components 7 can be set on the top, side, or appropriate position of the end plate 2 of the outer casing 1. The structure of the lifting components 7 can be a lifting ring, lifting lug, or lifting hook seat, etc. Taking a lifting ring as an example, the lifting ring is firmly installed on the top surface of the outer casing 1 or the end plate 2 by bolts or welding. Each battery module can be equipped with two or more lifting components 7 according to its weight and actual handling requirements. They are usually symmetrically distributed to facilitate maintaining the balance of the module during the lifting process.

[0071] In use, the hook or wire rope of the lifting device (such as a crane, hoist, etc.) can be directly connected to the lifting component 7 to achieve safe lifting and movement of the battery module. The dimensions and load-bearing capacity of the lifting component 7 are designed according to the weight of the battery module and the handling requirements to ensure that it can withstand the module body and additional loads during operation.

[0072] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0073] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0074] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A battery module, characterized in that, include: A housing having a mounting cavity; An end plate is detachably connected to the outer casing and seals the mounting cavity; The battery assembly is located within the mounting cavity and is detachably connected to the housing.

2. The battery module according to claim 1, characterized in that, The housing has a main body and a fixing part. The main body has the mounting cavity. The fixing part is connected to the main body and is located in the mounting cavity. The battery assembly has a clearance hole. The battery assembly is inserted into the fixing part through the clearance hole.

3. The battery module according to claim 2, characterized in that, The battery assembly includes a locking component connected to the fixing portion and the battery assembly to restrict the separation of the battery assembly from the fixing portion.

4. The battery module according to claim 3, characterized in that, The locking component includes an abutment and a locking member. The abutment is detachably connected to the fixing part via the locking member, and the abutment abuts against the end face of the battery assembly to restrict the movement of the battery assembly.

5. The battery module according to claim 1, characterized in that, The end plate includes an end cap and an extension that are connected to each other. The end cap abuts against the outer shell, and the extension extends into the mounting cavity and abuts against the cavity wall of the mounting cavity. The end cap portion is sealed to the outer casing by a first sealing element, and / or the extension portion is sealed to the cavity wall of the mounting cavity by a second sealing element.

6. The battery module according to claim 5, characterized in that, The battery module includes a first sealing member, and an abutment surface is formed at the junction of the outer shell and the end cap. The first sealing member is disposed on the abutment surface and presses against the end cap and the outer shell.

7. The battery module according to claim 5, characterized in that, The battery module includes a second seal that presses against the wall of the extension and the mounting cavity to seal the mounting cavity.

8. The battery module according to claim 7, characterized in that, The extension and / or the cavity wall of the mounting cavity are formed with a sealing groove, and the second sealing element is disposed in the sealing groove.

9. The battery module according to claim 5, characterized in that, The battery module includes a fixing member. The end cap has a first fixing hole, and the outer shell has a second fixing hole on the end face that abuts against the end cap. The fixing member passes through the first fixing hole and the second fixing hole to fix the end cap to the outer shell.

10. The battery module according to claim 9, characterized in that, The end cap portion has a receiving groove formed on the side opposite to the outer shell, and the first fixing hole is opened at the bottom of the receiving groove. The fixing member enters the first fixing hole from the receiving groove and is housed in the receiving groove.

11. The battery module according to claim 10, characterized in that, The receiving groove is semi-enclosed around the fixing member.

12. The battery module according to claim 10, characterized in that, The edge portion of the end cap is recessed inward to form the receiving groove, and a plurality of the receiving grooves are arranged around the end cap. The end cap has a first fixing hole in the receiving groove, and the abutment surface is formed at the contact point between the outer shell and the end cap. The abutment surface has a second fixing hole.

13. The battery module according to any one of claims 1 to 12, characterized in that, The end plates are detachably connected to both ends of the outer casing.

14. The battery module according to any one of claims 1 to 12, characterized in that, The outer casing and / or the end plate are provided with lifting components, which are used for connection to a lifting device.

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