A mounting assembly for a power battery, a vehicle with the mounting assembly and a power battery assembling method based on the mounting assembly

Abstract

This invention relates to the field of power batteries, specifically to a power battery mounting assembly, a vehicle having the mounting assembly, and a power battery assembly method based on the mounting assembly. The assembly includes: a connecting bracket assembly comprising a connecting frame and a connecting unit; the connecting frame being used to connect to a power battery; and a mounting bracket assembly comprising a mounting structure; the mounting structure being used to connect to a vehicle frame assembly; the connecting bracket assembly being able to connect to the mounting structure via the connecting unit. This invention, through the design of the mounting assembly, avoids the inconvenience of directly connecting the power battery to the vehicle frame. The mounting bracket assembly effectively provides an additional mounting point for the vehicle frame assembly, thus facilitating the connection between the mounting bracket assembly and the powertrain. Furthermore, the connecting bracket assembly provides an additional mounting point for the power battery, facilitating the connection between the power battery and the mounting bracket assembly.

Description

Technical Field

[0001] This invention relates to the field of power batteries, specifically to a power battery mounting assembly, a vehicle having the mounting assembly, and a power battery assembly method based on the mounting assembly. Background Technology

[0002] As a core component of new energy vehicles, power batteries are currently usually connected to the vehicle frame directly or via hangers. Although it is possible to connect power batteries to the vehicle frame, it is inconvenient to connect the vehicle frame directly to the power battery or hangers.

[0003] Therefore, in order to improve the above problems, a new mounting bracket is needed to help achieve the connection between the vehicle frame and the power battery. Summary of the Invention

[0004] The purpose of this invention is to provide a bracket assembly that facilitates the installation of power batteries on a vehicle frame.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A mounting assembly for a power battery includes: a connecting bracket assembly, including a connecting frame and a connecting unit; the connecting frame is used to connect to a power battery; the mounting bracket assembly includes a mounting structure; the mounting structure is used to connect to a vehicle frame assembly; the connecting bracket assembly can be connected to the mounting structure via the connecting unit.

[0007] The connecting unit includes a connecting plate connected to the connecting frame; the mounting structure includes a mounting plate connected to the frame assembly; each connecting unit corresponds to a mounting structure; the connecting unit and the mounting structure can be connected by fasteners.

[0008] The connecting unit also includes a first reinforcing member disposed on the connecting plate body;

[0009] The mounting structure also includes a second reinforcing member disposed on the mounting plate;

[0010] The end face of the first reinforcing member near the connecting frame is recessed inward relative to the edge of the connecting plate near the connecting frame.

[0011] The end face of the second reinforcing member at the end away from the connecting frame is recessed inward relative to the edge of the mounting plate at the end away from the connecting frame.

[0012] The connecting plate has a connecting hole; the mounting plate has a mounting hole; the connecting unit and the mounting structure can be connected to the mounting hole by fasteners passing through the connecting hole;

[0013] The first reinforcing member and / or the second reinforcing member are rectangular tubes.

[0014] The mounting plate has a positioning notch.

[0015] The connecting frame includes a frame body; the frame body is provided with a mounting beam; the mounting beam is provided with a through-hole; the through-hole is an oblong hole;

[0016] The mounting beam can be connected to the power battery via fasteners passing through the connecting holes.

[0017] The main frame includes two spaced-apart longitudinal beams; the two longitudinal beams are connected by multiple transverse beams; the transverse beams and the mounting beams are arranged parallel to each other; the cross-section of the mounting beams is inverted U-shaped; the planes of the longitudinal beams, transverse beams, and mounting beams near the power battery are on the same plane.

[0018] A vehicle includes a frame assembly on which the power battery mounting assembly is disposed;

[0019] The frame assembly includes an upper frame, a lower frame, and a column unit;

[0020] The lower frame includes a lower frame longitudinal beam; the column unit includes a support column; the lower frame longitudinal beam is connected to the upper frame through multiple support columns;

[0021] The power battery mounting assembly is connected to the lower frame longitudinal beam; each mounting plate in the power battery mounting assembly is connected to the adjacent corresponding support column through a positioning notch.

[0022] The power battery mounting assembly is connected to a lower frame longitudinal beam on each side; the power battery mounting assembly is used to connect two lower frame longitudinal beams.

[0023] A method for assembling a power battery based on the aforementioned mounting assembly, the method comprising the following steps:

[0024] Step 1: Component confirmation;

[0025] Determine the size and model of the power battery to be installed; then select the corresponding power battery mounting assembly based on the size and model of the power battery to be installed.

[0026] Step 2: Component installation and assembly;

[0027] Connect the power battery to be installed to the connecting bracket assembly to form a preliminary pre-assembled component;

[0028] The mounting bracket assembly is connected to the lower frame longitudinal beam in the body assembly;

[0029] Step 3: Install the power battery on the vehicle body;

[0030] The installation steps for the initial pre-assembled components on the chassis assembly are as follows:

[0031] Step S1: Move the initial pre-assembled parts under the chassis assembly;

[0032] When the preliminary pre-assembled part is located below the lower frame of the vehicle frame assembly, the connecting unit in the preliminary pre-assembled part and the mounting structure in the mounting bracket assembly do not coincide in the horizontal projection direction.

[0033] Step S2: Lift the preliminary pre-assembled component; control the preliminary pre-assembled component to enter the chassis assembly along the overall vehicle height direction;

[0034] Step S3: After step S2 is completed, the preliminary pre-assembled part is moved along the length of the longitudinal beam of the lower frame in the frame assembly so that the connecting unit in the preliminary pre-assembled part coincides with the mounting structure in the mounting bracket assembly in the horizontal projection direction.

[0035] This ensures that the connecting holes in each connecting unit are aligned with the mounting holes in the corresponding mounting structure.

[0036] Then fasteners are used to connect the mounting structure to the corresponding connection unit;

[0037] At this point, the installation of one power battery is complete.

[0038] The advantages of this invention are:

[0039] This invention discloses a power battery mounting assembly, a vehicle having the mounting assembly, and a power battery assembly method based on the mounting assembly.

[0040] This invention avoids the inconvenience of directly connecting the power battery to the vehicle frame by setting up the assembly.

[0041] By providing an additional mounting point for the vehicle frame assembly through the mounting bracket assembly, this invention facilitates the connection between the mounting bracket assembly and the powertrain. In turn, the mounting bracket assembly provides an additional mounting point for the power battery, facilitating the connection between the power battery and the mounting bracket assembly.

[0042] The modular design of this invention improves assembly flexibility and maintenance convenience; by dividing the mounting assembly into two independent modules, namely the connecting bracket assembly (with the battery) and the mounting bracket assembly (with the vehicle frame), the power battery and the vehicle frame assembly are decoupled.

[0043] The power battery can be pre-installed, tested and transported as an independent module, which has high production efficiency. Moreover, the battery can be removed separately during after-sales maintenance without disassembling the entire installation structure, resulting in low maintenance costs.

[0044] The first reinforcing member is recessed at the end closest to the connecting frame, and the second reinforcing member is recessed at the end furthest from the connecting frame. The two work together to form a staggered overlap structure, which facilitates the overlap distribution between the connecting unit and the connecting frame, and also facilitates the overlap distribution between the mounting structure and the frame assembly.

[0045] In this invention, the through holes on the mounting beam adopt a waist-shaped hole structure, which allows the fasteners to have a certain adjustment margin in the length direction. This can absorb the manufacturing tolerances and cumulative assembly errors between the power battery, the connecting frame and the vehicle frame, reduce the requirements for the machining accuracy of the parts and reduce the manufacturing cost.

[0046] The mounting beam adopts an inverted U-shaped design, which balances strength and space utilization; at the same time, it can make the bolts essentially inside the mounting beam, avoiding the exposure of the power battery fasteners.

[0047] The longitudinal beams, transverse beams, and mounting beams of the frame are all coplanar on the side closest to the power battery: This ensures the placement area of ​​the power battery and the stability of its placement; it also ensures the flatness of the battery mounting surface and avoids uneven local stress on the battery, which could lead to casing deformation or internal damage. Attached Figure Description

[0048] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0049] Figure 1 This is a schematic diagram of the structure of the power battery mounting assembly when it is installed on the vehicle frame assembly in this invention.

[0050] Figure 2 This is a partial structural diagram of the connection unit and the mounting structure in this invention.

[0051] Figure 3 This is a schematic diagram of the structure of the power battery connected to the vehicle frame assembly in this invention.

[0052] Figure 4 This is a schematic diagram of the mounting bracket assembly in this invention.

[0053] Figure 5 This is a schematic diagram of the structure when the mounting bracket assembly is connected to the power battery in this invention.

[0054] Figure 6 This is a schematic diagram of the installation structure in this invention.

[0055] Figure 7 This is a diagram showing the relative positions of the mounting bracket assembly and the connecting bracket assembly during step S1 of the present invention.

[0056] Figure 8This is a diagram showing the relative positions of the mounting bracket assembly and the connecting bracket assembly after step S3 of the present invention is completed.

[0057] The markings in the above figures are all:

[0058] 1: Frame longitudinal beam, 2: Frame transverse beam, 3: Mounting transverse beam, 4: Through hole, 5: Connecting unit, 6: Connecting plate, 7: First reinforcing member, 8: Connecting hole, 9: Mounting plate, 10: Mounting hole, 11: Second reinforcing member, 12: Positioning notch, 1-1: Frame assembly, 1-2: Power battery mounting assembly, 1-3: Power battery, 1-11: Upper frame, 1-12: Lower frame, 1-121: Lower frame longitudinal beam, 1-13: Support column, 1-21: Mounting bracket assembly, 1-211: Mounting structure, 1-22: Connecting bracket assembly. Detailed Implementation

[0059] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and the description of the preferred embodiments.

[0060] A mounting assembly for a power battery includes: a connecting bracket assembly 1-22, comprising a connecting frame and a connecting unit 5; the connecting frame is used to connect to a power battery 1-3; and a mounting bracket assembly 1-21, comprising a mounting structure 1-211; the mounting structure 1-211 is used to connect to a vehicle frame assembly 1-1; the connecting bracket assembly 1-22 can be connected to the mounting structure 1-211 via the connecting unit 5. This invention, through the configuration of the mounting assembly 1-21, avoids the inconvenience of directly connecting the power battery 1-3 to the vehicle frame assembly. The mounting bracket assembly 1-21 effectively provides an additional mounting point for the vehicle frame assembly 1-1, thus facilitating the connection between the mounting bracket assembly 1-21 and the power assembly. Conversely, the connecting bracket assembly 1-22 provides an additional mounting point for the power battery 1-3, facilitating the connection between the power battery 1-3 and the mounting bracket assembly 1-21.

[0061] The main function of the power battery mounting assembly 1-2 disclosed in this invention is to mount the power battery 1-3 on the vehicle frame assembly 1-1.

[0062] The mounting assemblies 1-2 disclosed in this invention are mainly applicable to bus frames, but theoretically they can also be applied to other vehicle models.

[0063] Specifically, the power battery mounting assembly 1-2 disclosed in this invention mainly includes a connecting bracket assembly 1-22 and a mounting bracket assembly 1-21. The mounting bracket assembly 1-21 is mainly connected to the frame assembly 1-1; specifically, it is connected to the lower frame longitudinal beam 1-121 in the frame assembly 1-1. The connecting bracket assembly 1-22 is mainly connected to the power battery 1-3. The connecting bracket assembly 1-22 is connected to the lower end of the power battery 1-3 and is mainly used to provide longitudinal support for the power battery 1-3. The connecting bracket assembly 1-22 of this invention is arranged at the lower end of the power battery 1-3, which can provide longitudinal support for the power battery 1-3, thereby avoiding excessive lateral force on the power battery 1-3 in traditional systems, which can easily damage the power battery 1-3 housing.

[0064] In this invention, the connecting bracket assembly 1-22 mainly includes a connecting frame and a connecting unit 5; the connecting frame is used to connect with the power battery 1-3; the power battery 1-3 is disposed above the connecting frame, and the connecting frame provides longitudinal support to the power battery 1-3; while the connecting unit 5 is mainly used for the connection between the connecting frame and the mounting bracket assembly 1-21.

[0065] The mounting bracket assembly 1-21 mainly includes a mounting structure 1-211; the mounting structure 1-211 is used to connect with the frame assembly 1-1; the mounting structure 1-211 is equivalent to an additional protruding point on the frame assembly 1-1, which facilitates the installation of the power battery 1-3 on the frame.

[0066] Specifically, the present invention requires that the connecting bracket assembly 1-22 can be connected to the mounting structure 1-211 through the connecting unit 5; the connection method between the connecting unit 5 and the mounting structure 1-211 is diverse, such as being connected by fasteners, or by a pin and fasteners, or by a pin and a buckle, etc.

[0067] In this invention, the connecting bracket assembly 1-22 includes multiple connecting units 5, and the mounting bracket assembly 1-21 also includes multiple mounting structures 1-211. In this invention, one connecting unit 5 corresponds to one mounting structure 1-211. During connection, the connecting unit 5 overlaps on the mounting structure 1-211, and the connecting unit 5 is located above the mounting structure 1-211. The connecting plate 6 in the connecting unit 5 overlaps on the mounting plate 9, and then the connecting plate 6 and the mounting plate 9 are connected by fasteners. This design allows the mounting structure 1-211 to provide a longitudinal support force for the connecting unit 5, thereby facilitating the pre-installation of the power battery 1-3 and subsequent fine-tuning operations.

[0068] In this invention, the connecting unit 5 includes a connecting plate 6 connected to the connecting frame; the mounting structure 1-211 includes a mounting plate 9 connected to the frame assembly 1-1; both the connecting plate 6 and the mounting plate 9 are primarily plate structures, serving as connectors and overlapping members. One end of the connecting plate 6 is connected to the connecting frame, and the other end can overlap with the mounting plate 9; while one end of the mounting plate overlaps with the lower frame longitudinal beam 1-121, and the other end overlaps with the connecting plate 6. In this invention, each connecting unit 5 corresponds to one mounting structure 1-211; the connecting unit 5 and the mounting structure 1-211 can be connected by fasteners; based on the above design, the connection between the connecting unit 5 and the mounting structure 1-211 is facilitated.

[0069] In this invention, the connecting unit 5 further includes a first reinforcing member 7 disposed on the connecting plate 6; the mounting structure 1-211 further includes a second reinforcing member 11 disposed on the mounting plate 9; in this invention, the first reinforcing member 7 and the second reinforcing member 11 both serve as reinforcing members, mainly to ensure the structural strength of the connecting unit 5 or the mounting structure 1-211; in addition, the first reinforcing member 7 and the second reinforcing member 11 also serve as positioning members; in this invention, the connecting plate 6 overlaps the connecting frame, so that the upper end face of the connecting plate 6 is fitted with the lower end face of the connecting frame; and this invention requires the first... The end face of the first reinforcing member 7 near the connecting frame is recessed inward relative to the edge of the connecting plate 6 near the connecting frame. This inward recess essentially requires that the length of the first reinforcing member 7 be less than the width of the connecting plate 6. This inward recess forms a stepped platform. During subsequent connection, the connecting plate 6 overlaps the lower end of the connecting frame, and the end of the first reinforcing member 7 can press against the side of the connecting frame. The connecting unit 5 is T-shaped or L-shaped, ensuring the contact area between the connecting unit 5 and the connecting frame, thereby ensuring the stability of the connection between the connecting unit 5 and the connecting frame; thus giving the connecting unit 5 a self-positioning function.

[0070] Similarly, the present invention requires that the end face of the second reinforcing member 11 away from the connecting frame is recessed inward relative to the edge of the mounting plate 9 away from the connecting frame. Based on this design, the lower end face of the mounting plate 9 overlaps the upper end face of the lower frame longitudinal beam 1-121, and the second reinforcing member 11 is recessed inward, so that the vertical cross section of the second reinforcing member 11 and the mounting plate 9 is L-shaped or T-shaped. During subsequent installation, the second reinforcing member 11 can also press against the lower end of the lower frame longitudinal beam 1-121. Based on this design, the second reinforcing member 11 can also act as a reinforcing member and a limiting and positioning member.

[0071] In addition, the first reinforcing member 7 of the present invention abuts against the side of the connecting frame, which can control the overlap area between the connecting plate 6 and the connecting frame, and avoid the connecting plate 6 and the connecting frame from excessively overlapping and occupying the connecting hole 8. The second reinforcing member 11 abuts against the inner side of the lower frame longitudinal beam 1-121, which can avoid the mounting plate 9 and the lower frame longitudinal beam 1-121 from excessively overlapping and occupying the mounting hole. At the same time, the above design can also ensure that the installation positions of the connecting unit 5 and the mounting unit can be in the designed positions, which facilitates the calibration of the installation positions of the connecting unit 5 and the mounting unit.

[0072] In this invention, the connecting plate 6 is provided with a connecting hole 8; the mounting plate 9 is provided with a mounting hole; the connecting unit 5 and the mounting structure 1-211 can be connected to the mounting hole by fasteners passing through the connecting hole 8; the setting of the connecting hole 8 and the mounting hole facilitates the connection of fasteners on the connecting unit 5 and the mounting structure 1-211.

[0073] In this invention, the first reinforcing member 7 and / or the second reinforcing member 11 are rectangular tubes; the use of rectangular tubes in this invention facilitates the connection between the rectangular tube and the connecting plate 6 or the mounting plate 9, and the rectangular tube and the connecting plate 6 or the mounting plate 9 are in surface contact, ensuring the stability of its installation position.

[0074] In this invention, the mounting plate 9 is provided with a positioning notch 12; the width of the positioning notch 12 is adapted to the width of the support column 1-13 in the frame assembly 1-1. Based on the setting of the positioning notch 12, the mounting plate 9 can be equivalent to being snapped onto the support column 1-13 during installation, thereby ensuring the accuracy and stability of the installation position of the mounting plate 9.

[0075] The connecting frame in this invention includes a frame body; the frame body is the main structure of the connecting frame; the frame body in this invention is provided with a mounting beam 3; the mounting beam 3 has two functions: one is to provide longitudinal support for the power battery 1-3, and the other is to provide mounting points to facilitate the connection between the connecting frame and the power battery 1-3.

[0076] In this invention, the mounting beam 3 is provided with a through-hole 4; the mounting beam 3 can be connected to the power battery by fasteners passing through the through-hole 4. The through-hole 4 facilitates the fasteners to pass through the mounting beam 3 and connect to the power battery 1-3 arranged on the mounting beam 3.

[0077] In this invention, the through hole 4 is an oblong hole; the elongated hole of the oblong hole is along the length of the longitudinal beam of the vehicle frame. This design can reduce the manufacturing precision of the power battery 1-3 and the through hole 4, and also facilitate the arrangement and placement of the power battery 1-3 on the connecting frame.

[0078] In this invention, the main frame includes two spaced-apart frame longitudinal beams 1; the two frame longitudinal beams 1 are connected by multiple frame transverse beams 2; the two frame longitudinal beams 1 and the frame transverse beams 2 form a horizontal frame structure, and the frame transverse beams 2 and the mounting transverse beams 3 are arranged parallel to each other; so that the mounting transverse beams 3 can not only be used for the installation and connection of the power batteries 1-3, but also serve as the frame transverse beams 2.

[0079] The cross-section of the mounting beam 3 is inverted U-shaped, which gives the lower end of the mounting beam 3 an opening. When installing bolts, the bolt nuts are essentially sunk into the interior of the mounting beam 3.

[0080] In this invention, the planes of the frame longitudinal beam 1, frame cross beam 2, and mounting cross beam 3 near the power battery 1-3 are on the same plane; this arrangement essentially means that the upper surfaces of the frame longitudinal beam 1, frame cross beam 2, and mounting cross beam 3 are flush, ensuring the flatness of the upper surface of the connecting frame and facilitating the arrangement of the power battery 1-3.

[0081] A vehicle includes a frame assembly 1-1, on which a power battery mounting assembly 1-2 is provided; the frame assembly 1-1 includes an upper frame 1-11, a lower frame 1-12, and a column unit; in this invention, the upper frame 1-11, the lower frame 1-12, and the column unit form a mounting cavity, in which a power battery 1-3 can be arranged; in this invention, the power battery 1-3 is connected to the frame assembly 1-1 via the mounting assembly 1-2, specifically connected to the lower frame 1-12; more specifically, connected to the lower frame longitudinal beam 1-121.

[0082] In this invention, the lower frame 1-12 includes a lower frame longitudinal beam 1-121; the column unit includes a support column 1-13; the lower frame longitudinal beam 1-121 is connected to the upper frame 1-11 through multiple support columns 1-13; in this invention, the upper frame 1-11 and the lower frame 1-12 are distributed parallel to each other; the support columns 1-13 are distributed along the longitudinal direction of the vehicle.

[0083] The power battery mounting assembly 1-2 of the present invention is connected to the lower frame longitudinal beam 1-121; each mounting plate in the power battery mounting assembly 1-2 is connected to the adjacent corresponding support column 1-13 through the positioning notch 12; the positioning notch 12 facilitates the installation and positioning of each mounting structure 1-211 on the lower frame 1-12.

[0084] In this invention, the power battery mounting assembly 1-2 is connected to a lower frame longitudinal beam 1-121 on each side; the power battery mounting assembly 1-2 is used to connect the two lower frame longitudinal beams 1-121; based on the above design, it can be understood that the basic function of the power battery mounting assembly 1-2 disclosed in this invention is to serve as a mounting bracket for the power battery 1-3, so that the power battery 1-3 can be easily installed on the frame assembly 1-1. Another function is to serve as a frame crossbeam, in order to ensure the structural strength and rigidity of the lower frame and avoid the need to add an additional frame crossbeam later.

[0085] A method for assembling a power battery 1-3 based on the power battery mounting assembly 1-2, the method comprising the following steps:

[0086] Step 1: Component confirmation;

[0087] Determine the size and model of the power battery 1-3 to be installed; then select the corresponding power battery mounting assembly 1-2 based on the size and model of the power battery 1-3 to be installed.

[0088] Step 2: Component installation and assembly;

[0089] Connect the power battery 1-3 to be installed to the connecting bracket assembly 1-22 to form a preliminary pre-assembled component;

[0090] Mounting bracket assembly 1-21 is connected to the lower frame longitudinal beam 1-121 in the body assembly;

[0091] Step 3: Install the power battery on the vehicle body;

[0092] The installation steps for the preliminary pre-assembled parts on the frame assembly 1-1 are as follows:

[0093] Step S1: Move the initial pre-assembled parts below the frame assembly 1-1;

[0094] When the preliminary pre-assembled part is located below the lower frame 1-12 of the frame assembly 1-1, the connecting unit 5 in the preliminary pre-assembled part and the mounting structure 1-211 in the mounting bracket assembly 1-21 do not coincide in the horizontal projection direction.

[0095] Step S2: Lift the preliminary pre-assembled component; control the preliminary pre-assembled component to enter the chassis assembly 1-1 along the overall vehicle height direction;

[0096] Step S3: After step S2 is completed, the preliminary pre-assembled part is moved along the length of the lower frame longitudinal beam 1-121 in the frame assembly 1-1; so that the connecting unit 5 in the preliminary pre-assembled part coincides with the mounting structure 1-211 in the mounting bracket assembly 1-21 in the horizontal projection direction.

[0097] This ensures that the connecting hole 8 in each connecting unit 5 is aligned with the mounting hole in the corresponding mounting structure 1-211;

[0098] Then fasteners are used to connect the mounting structure 1-211 to the corresponding connecting unit 5;

[0099] At this point, the installation of one power battery (1-3) is complete.

[0100] Specific assembly method of power battery:

[0101] First, fix the power battery to the connecting frame using M12×45 bolts.

[0102] The specific steps are as follows: First, place the connecting frame on the lifting trolley, use the crane to lift the power battery 1-3, move the crane or the lifting trolley to ensure that the mounting holes on the power battery 1-3 are aligned with the holes on the connecting frame, and then use 10.9 grade M12 bolts to drive the bolts from bottom to top, first pre-tighten and then tighten. At this point, the pre-installation of the battery onto the connecting frame is completed.

[0103] Move the lifting trolley carrying the pre-installed battery to below the middle section of the frame assembly 1-1;

[0104] Move the lifting trolley to the bottom of the frame assembly 1-1. Note that the mounting structure 1-211 and the connecting unit 5 are offset by a certain position. Then raise the trolley to the appropriate position. Then move the trolley back and forth to the top of the mounting structure 1-211, keeping the misaligned holes of the mounting structure 1-211 and the connecting unit 5 aligned.

[0105] Use M12 bolts and nuts of grade 10.9 to connect and tighten the connecting unit 5 to the mounting structure 1-211. The installation is now complete.

[0106] Example 1:

[0107] This invention provides a mounting assembly 1-2 for a power battery, the main function of which is to enable convenient and reliable installation of the power battery 1-3 on the frame assembly 1-1. This mounting assembly 1-2 is particularly suitable for bus frames, especially for models with limited space in the middle and bottom section of the frame. However, theoretically, its technical concept can also be applied to the battery installation needs of other types of vehicles.

[0108] The power battery mounting assembly 1-2 mainly comprises two parts: a connecting bracket assembly 1-22 and a mounting bracket assembly 1-21. The mounting bracket assembly 1-21 is used for fixed connection to the frame assembly 1-1, specifically to the lower frame longitudinal beam 1-121 of the frame assembly 1-1. The connecting bracket assembly 1-22 is used for fixed connection to the power battery 1-3, specifically located at the lower end face of the power battery 1-3, providing longitudinal support for the power battery 1-3. This split design avoids the assembly difficulties caused by a complex direct connection between the power battery 1-3 and the frame. Furthermore, the mounting bracket assembly 1-21 provides an additional mounting protrusion on the frame assembly 1-1, while the connecting bracket assembly 1-22 provides an additional transition mounting point on the power battery 1-3. Together, they create a clearer and more distinct connection path between the power battery 1-3 and the frame.

[0109] In this embodiment, the connecting bracket assembly 1-22 mainly includes a connecting frame and multiple connecting units 5. The connecting frame is the main load-bearing structure of the connecting bracket assembly 1-22, and its upper end surface is used to directly contact and fix it to the bottom of the power battery 1-3, thereby providing longitudinal support force to the power battery 1-3. The specific structure of the connecting frame includes two parallel and spaced frame longitudinal beams 1, and multiple frame transverse beams 2 fixedly connected between the two frame longitudinal beams 1. The two frame longitudinal beams 1 and the multiple frame transverse beams 2 together form a horizontal frame body, which has an overall rectangular frame structure and can form a uniform support surface for the bottom of the power battery 1-3.

[0110] Multiple mounting beams 3 are also provided on the main frame. The mounting beams 3 are arranged parallel to the frame beams 2, and in addition to serving as the mounting connection points for the power batteries 1-3, the mounting beams 3, together with the frame beams 2, also play a role in lateral connection and strengthening the rigidity of the main frame structure. The cross-section of the mounting beams 3 is designed as an inverted U-shape with an opening at the lower end. When fasteners are used to connect to the power batteries 1-3 through the mounting beams 3, the nut part of the fastener can be recessed into the inverted U-shaped groove, preventing the nut from protruding from the lower surface of the mounting beam 3, thereby reducing the space occupied below and preventing the nut from interfering with other components.

[0111] The longitudinal beam 1, the transverse beam 2, and the mounting beam 3 on the side closest to the power battery 1-3 are all on the same plane. In other words, the upper surfaces of all these beams are flush, ensuring good flatness of the upper surface of the connecting frame. The advantage of this design is that the bottom of the power battery 1-3 can form a surface-to-surface contact with the connecting frame, avoiding stress concentration caused by local unevenness. It also helps the fasteners obtain uniform preload during connection, improving the reliability of battery fixation.

[0112] A through-hole 4 is provided on the mounting beam 3 for fasteners to pass through, thereby enabling a detachable connection between the mounting beam 3 and the power battery 1-3. In actual manufacturing, the through-hole 4 is preferably designed as an oblong hole, with the elongated direction of the oblong hole extending along the length of the longitudinal beam of the vehicle frame. This oblong hole design effectively compensates for manufacturing and assembly errors in the length direction of the mounting holes of the power battery 1-3, reduces the precision requirements for component processing, and also reduces the difficulty of hole alignment during on-site assembly.

[0113] The connecting unit 5 is fixedly mounted on the connecting frame to achieve a detachable connection between the connecting frame and the mounting bracket assembly 1-21. Each connecting unit 5 includes a connecting plate 6, one end of which is fixedly connected to the connecting frame, and the other end extends outward to overlap with the mounting bracket assembly 1-21. Specifically, the connecting plate 6 overlaps with the lower end face of the connecting frame, and the upper end face of the connecting plate 6 is fitted against the lower end face of the connecting frame. To enhance the structural strength and bending resistance of the connecting unit 5, a first reinforcing member 7 is also fixedly mounted on the connecting plate 6. The first reinforcing member 7 is preferably made of rectangular tubing, and the rectangular tubing is surface-fitted with the connecting plate 6 to ensure the stability of the connection position and the efficiency of force transmission.

[0114] In this embodiment, the connection position between the connecting plate 6 and the connecting frame is specifically designed. The end face of the first reinforcing member 7 near the connecting frame is recessed inward relative to the edge of the connecting plate 6 near the connecting frame. That is, the length of the first reinforcing member 7 is shorter than the corresponding width of the connecting plate 6. Based on this structure, the relative positions of the connecting plate 6 and the first reinforcing member 7 in the vertical cross-section are L-shaped or T-shaped, wherein the end of the first reinforcing member 7 can press against the side of the connecting frame during installation. The coordination effect brought about by this design is multifaceted: First, the first reinforcing member 7, as a reinforcing structure, can significantly improve the bending stiffness of the connecting unit 5, preventing the connecting plate 6 from bending and deforming when bearing battery load; second, the end of the first reinforcing member 7 presses against the side of the connecting frame, giving the connecting unit 5 a self-positioning function during assembly, enabling it to quickly and accurately determine the installation position of the connecting unit 5 relative to the connecting frame; third, this recessed design also effectively controls the overlap length between the connecting plate 6 and the connecting frame, preventing the connecting plate 6 from over-lapping and occupying the arrangement space of the connecting hole 8, ensuring sufficient operating space and structural margin when fasteners are subsequently inserted.

[0115] Mounting bracket assembly 1-21 mainly includes multiple mounting structures 1-211. Mounting structures 1-211 are used for fixed connection to the lower frame longitudinal beam 1-121 of frame assembly 1-1, and each mounting structure 1-211 corresponds one-to-one with the aforementioned connecting unit 5. Each mounting structure 1-211 includes a mounting plate 9. One end of the mounting plate 9 is fixedly connected to the lower frame longitudinal beam 1-121, and the other end extends outward for overlapping with the connecting plate 6. The lower end face of the mounting plate 9 overlaps with the upper end face of the lower frame longitudinal beam 1-121, and the connection is achieved through welding or other fixing methods.

[0116] A second reinforcing member 11 is also fixedly installed on the mounting plate 9. The second reinforcing member 11 is preferably made of rectangular tubing to improve the structural strength and bending resistance of the mounting plate 9. The end face of the second reinforcing member 11, away from the connecting frame, is recessed inward relative to the edge of the mounting plate 9 away from the connecting frame. Based on this structure, the relative positions of the second reinforcing member 11 and the mounting plate 9 in the vertical section are L-shaped or T-shaped, wherein the end of the second reinforcing member 11 can press against the inner surface of the lower frame longitudinal beams 1-121 during installation. The coordinated technical effects of this design are as follows: On the one hand, the second reinforcing member 11 significantly strengthens the mounting plate 9, ensuring that the mounting structure 1-211 will not undergo excessive deformation or damage when subjected to loads from the connecting unit 5; on the other hand, the pressing fit between the second reinforcing member 11 and the side of the lower frame longitudinal beam 1-121 enables the mounting structure 1-211 to have a self-positioning function during assembly, accurately positioning the mounting plate 9 in the preset installation position; in addition, this recessed design can effectively control the overlap range between the mounting plate 9 and the lower frame longitudinal beam 1-121, avoiding the mounting holes being blocked by excessive overlap areas, and ensuring the convenience of subsequent connection operations.

[0117] A connecting hole 8 is provided on the connecting plate 6, and a mounting hole 10 is provided on the mounting plate 9. The mounting plate 9 also has a positioning notch 12. The width of the positioning notch 12 is adapted to the width of the support column 1-13 in the frame assembly 1-1. When the mounting plate 9 is fixed on the lower frame longitudinal beam 1-121, the positioning notch 12 can form a snap-fit ​​with the support column 1-13, thereby further limiting and positioning the installation position of the mounting plate 9, ensuring the accuracy and consistency of the installation position of each mounting structure 1-211 on the lower frame 1-12.

[0118] In the assembled state, the connecting plate 6 of the connecting unit 5 overlaps the mounting plate 9 of the corresponding mounting structure 1-211. The connecting plate 6 and the mounting plate 9 are detachably fixedly connected by fasteners passing through the connecting hole 8 and the mounting hole. Since the connecting plate 6 is above the mounting plate 9, the mounting structure 1-211 can provide stable longitudinal support for the connecting unit 5. This design is particularly advantageous during the assembly process: in the pre-assembly stage of the power battery 1-3, after the connecting bracket assembly 1-22 and the power battery 1-3 are assembled into one unit, this pre-assembled component is hoisted or lifted into place as a whole. At this time, the longitudinal support of the mounting structure 1-211 for the connecting unit 5 can enable the pre-assembled component to obtain preliminary stable support before the fasteners are installed, which facilitates the operator to make fine adjustments to the position and align the holes, and significantly reduces the assembly difficulty in high-altitude or confined spaces.

[0119] Example 2:

[0120] A vehicle includes a frame assembly 1-1, on which the aforementioned power battery mounting assembly 1-2 is disposed. The frame assembly 1-1 includes an upper frame 1-11, a lower frame 1-12, and a column unit. The upper frame 1-11 and the lower frame 1-12 are arranged parallel to each other. The lower frame 1-12 includes two lower frame longitudinal beams 1-121. The column unit includes multiple support columns 1-13. The lower frame longitudinal beams 1-121 are fixedly connected to the upper frame 1-11 via the multiple support columns 1-13, thereby forming an internal cavity for accommodating a power battery 1-3 within the upper frame 1-11, the lower frame 1-12, and the column unit.

[0121] The power battery mounting assembly 1-2 is connected to the lower frame longitudinal beam 1-121. Specifically, each mounting plate in the mounting assembly 1-2 is connected to the adjacent corresponding support column 1-13 through positioning notches 12. Simultaneously, each side of the power battery mounting assembly 1-2 is connected to one lower frame longitudinal beam 1-121. In other words, the mounting assembly 1-2 spans across the width of the vehicle, connecting two lower frame longitudinal beams 1-121. The coordinated technical effect of this design is that, in addition to serving as the mounting base for the power battery 1-3, the mounting assembly 1-2 also acts as a transverse connecting beam for the lower frame. Because the mounting assembly 1-2 itself has high structural rigidity and strength, after it is connected between the two lower frame longitudinal beams 1-121, it can effectively improve the lateral bending stiffness and torsional stiffness of the lower frame 1-12, ensuring the structural strength and integrity of the frame assembly 1-1, and avoiding the problem of increased weight and structural complexity caused by the need to add additional crossbeams at the bottom of the frame later.

[0122] Example 3:

[0123] The present invention provides a method for assembling a power battery 1-3 based on the above-mentioned power battery mounting assembly 1-2, the method comprising the following steps.

[0124] Step one is the component confirmation step. In this step, the size and model parameters of the power battery 1-3 to be installed are first determined. Then, based on the size and model of the power battery 1-3, a matching power battery mounting assembly 1-2 is selected. This preliminary selection step ensures that the load-bearing capacity and installation interface of the mounting assembly 1-2 are consistent with the actual requirements of the power battery 1-3, improving the versatility and serialization adaptability of the mounting assembly 1-2.

[0125] Step two is the component installation and assembly process.

[0126] In this step, the power battery 1-3 to be installed is connected to the connecting bracket assembly 1-22. Specifically, the connecting frame in the connecting bracket assembly 1-22 is attached to the bottom of the power battery 1-3, and fasteners are used to pass through the connecting holes 4 on the mounting beam 3 to fix it to the power battery 1-3, forming a preliminary pre-installed component. At the same time, each mounting structure 1-211 in the mounting bracket assembly 1-21 is fixedly connected to the lower frame longitudinal beam 1-121 in the vehicle body assembly, so that the position of the mounting structure 1-211 on the frame corresponds one-to-one with the position of the connecting unit 5.

[0127] Step three is the installation of the power battery on the vehicle body, which further includes the following sub-steps.

[0128] In sub-step S1, the preliminary pre-assembled assembly formed in step two is moved as a whole to below the frame assembly 1-1. When the preliminary pre-assembled assembly is below the lower frame 1-12 of the frame assembly 1-1, it is necessary to ensure that the connecting units 5 in the preliminary pre-assembled assembly and the mounting structures 1-211 in the mounting bracket assembly 1-21 are not overlapped in the horizontal projection direction. That is, from the vertical direction, there is a horizontal offset between the connecting units 5 and the mounting structures 1-211, and they do not obstruct each other in the vertical direction. The purpose of this setting is to reserve sufficient clearance for the subsequent lifting operation and avoid collision and interference between the connecting units 5 and the mounting structures 1-211 during the lifting process.

[0129] In sub-step S2, the preliminary pre-assembled component is controlled to be lifted upwards along the overall vehicle height direction, so that it enters the internal placement space of the frame assembly 1-1. Since the connecting unit 5 and the mounting structure 1-211 do not coincide in the horizontal projection direction before lifting, there will be no physical interference between the connecting unit 5 and the mounting structure 1-211 during the lifting process, and the preliminary pre-assembled component can be smoothly lifted into the frame in the vertical direction.

[0130] In sub-step S3, after the preliminary pre-assembled component is lifted into position, it is horizontally moved along the length of the lower frame longitudinal beam 1-121 in the frame assembly 1-1. This causes the connecting unit 5 in the preliminary pre-assembled component to become aligned with the mounting structure 1-211 in the mounting bracket assembly 1-21 in the horizontal projection direction. Consequently, the connecting hole 8 in each connecting unit 5 is spatially aligned with the mounting hole in the corresponding mounting structure 1-211. After the holes are aligned, the operator can easily pass fasteners through the connecting holes 8 and the mounting holes to lock the connecting unit 5 to the corresponding mounting structure 1-211.

[0131] At this point, the installation of a power battery 1-3 on the frame assembly 1-1 is complete.

[0132] Through the coordinated design of the above-mentioned component structures, the limitation of connection relationships, and the synergistic effect of the assembly method, the technical solution disclosed in this invention achieves multiple coordinated technical effects. First, at the structural level, the split modular design of the connecting bracket assembly 1-22 and the mounting bracket assembly 1-21, combined with the self-positioning function of their respective reinforcing parts and the limiting function of the positioning notch 12, enables the mounting assembly 1-2 to reduce the number of parts and the overall weight while ensuring high structural strength and load-bearing capacity. Second, at the assembly level, the two-step assembly method of staggered lifting and then translational alignment effectively avoids the operational difficulties of the narrow space at the bottom of the frame and the difficulty of directly aligning holes, greatly reducing the assembly difficulty and time consumption; at the same time, before the fasteners are tightened, the mounting structure 1-211 has provided longitudinal support for the connecting unit 5, so that the pre-assembled components can be stably held in the predetermined position, which is convenient for operators to adjust the hole positions and tighten them. Furthermore, in terms of overall vehicle performance, the mounting assembly 1-2 also serves as a lower-level transverse connection structure for the frame, enhancing the overall rigidity and torsional resistance of the frame and ensuring the structural integrity and safety of the vehicle during operation. Moreover, the battery load is primarily borne by the connecting frame, mounting structure 1-211, and corresponding reinforcements, with fasteners mainly serving a connecting rather than load-bearing function. This avoids the risk of bolt fatigue fracture under dynamic driving loads, significantly improving system reliability and service life. In addition, the oblong hole design on the mounting beam 3 reduces the manufacturing and assembly precision requirements of components, enhancing process adaptability. In summary, this invention achieves significant comprehensive improvements in assembly efficiency, structural strength, lightweighting, safety and reliability, and process adaptability.

[0133] Obviously, the specific implementation of this invention is not limited to the above-described methods. Any non-substantial improvements made using the inventive concept and technical solution of this invention are within the protection scope of this invention.

Claims

1. A mounting assembly for a power battery, characterized in that, include: The connecting bracket assembly (1-22) includes a connecting frame and a connecting unit (5); the connecting frame is used to connect to the power battery (1-3); Mounting bracket assembly (1-21) includes mounting structure (1-211); the mounting structure (1-211) is used to connect to frame assembly (1-1); The connecting bracket assembly (1-22) can be connected to the mounting structure (1-211) via the connecting unit (5).

2. The mounting assembly for a power battery according to claim 1, characterized in that, The connecting unit (5) includes a connecting plate (6) connected to the connecting frame; The mounting structure (1-211) includes a mounting plate (9) connected to the frame assembly (1-1); Each connection unit (5) corresponds to an installation structure (1-211); The connecting unit (5) and the mounting structure (1-211) can be connected by fasteners.

3. The mounting assembly for a power battery according to claim 2, characterized in that, The connecting unit (5) also includes a first reinforcing member (7) disposed on the connecting plate (6); The mounting structure (1-211) also includes a second reinforcing member (11) disposed on the mounting plate (9); The end face of the first reinforcing member (7) near the connecting frame is recessed inward relative to the edge of the connecting plate (6) near the connecting frame. The end face of the second reinforcing member (11) away from the connecting frame is recessed inward relative to the edge of the mounting plate (9) away from the connecting frame.

4. The mounting assembly for a power battery according to claim 3, characterized in that, The connecting plate (6) is provided with a connecting hole (8); the mounting plate (9) is provided with a mounting hole (10); the connecting unit (5) and the mounting structure (1-211) can be connected to the mounting hole (10) by fasteners passing through the connecting hole (8); The first reinforcing member (7) and / or the second reinforcing member (11) are rectangular tubes.

5. The mounting assembly for a power battery according to claim 2, characterized in that, The mounting plate (9) is provided with a positioning notch (12).

6. A power battery mounting assembly according to any one of claims 1-5, characterized in that, The connecting frame includes a frame body; the frame body is provided with a frame beam (3); the frame beam (3) is provided with a through hole (4); the through hole (4) is a waist-shaped hole; The frame beam (3) can be connected to the power battery (1-3) by fasteners passing through the connecting hole (4).

7. The mounting assembly for a power battery according to claim 6, characterized in that, The main frame includes two spaced longitudinal beams (1); the two longitudinal beams (1) are connected by multiple transverse beams (2); the transverse beams (2) and the transverse beams (3) are arranged parallel to each other; the transverse beams (3) have an inverted U-shaped cross section; the planes of the longitudinal beams (1), transverse beams (2) and transverse beams (3) near the power battery (1-3) are on the same plane.

8. A vehicle, characterized in that, The vehicle includes a frame assembly (1-1), on which a mounting assembly for a power battery as described in any one of claims 1-7 is provided; The frame assembly (1-1) includes an upper frame (1-11), a lower frame (1-12), and a column unit; The lower frame (1-12) includes a lower frame longitudinal beam (1-121); the column unit includes a support column (1-13); the lower frame longitudinal beam (1-121) is connected to the upper frame (1-11) through multiple support columns (1-13); The power battery mounting assembly (1-2) is connected to the lower frame longitudinal beam (1-121); each mounting plate (9) in the power battery mounting assembly is connected to the adjacent corresponding support column (1-13) through a positioning notch.

9. A vehicle according to claim 8, characterized in that, The power battery mounting assembly is connected to a lower frame longitudinal beam (1-121) on each side; the power battery mounting assembly is used to connect two lower frame longitudinal beams (1-121).

10. A method for assembling a power battery (1-3) based on the power battery mounting assembly according to any one of claims 1-7, characterized in that, The assembly method of the power battery (1-3) includes the following steps: Step 1: Component confirmation; Determine the size and model of the power battery to be installed (1-3); then select the corresponding power battery mounting assembly based on the size and model of the power battery to be installed (1-3); Step 2: Component installation and assembly; Connect the power battery to be installed (1-3) to the connecting bracket assembly (1-22) to form a preliminary pre-assembled component; The mounting bracket assembly (1-21) is connected to the lower frame longitudinal beam (1-121) in the body assembly; Step 3: Install the power batteries (1-3) on the vehicle body; The installation steps for the preliminary pre-assembled parts on the frame assembly (1-1) are as follows: Step S1: Move the initial pre-assembled parts under the frame assembly (1-1); When the preliminary pre-assembled part is located below the lower frame (1-12) in the frame assembly (1-1), the connecting unit (5) in the preliminary pre-assembled part does not coincide with the mounting structure (1-211) in the mounting bracket assembly (1-21) in the horizontal projection direction; Step S2: Lift the preliminary pre-assembled component; control the preliminary pre-assembled component to enter the chassis assembly (1-1) along the overall vehicle height direction; Step S3: After step S2 is completed, the preliminary pre-assembly is moved along the length of the lower frame longitudinal beam (1-121) in the frame assembly (1-1) so that the connecting unit (5) in the preliminary pre-assembly coincides with the mounting structure (1-211) in the mounting bracket assembly (1-21) in the horizontal projection direction. This ensures that the connecting hole (8) in each connecting unit (5) is aligned with the mounting hole (10) in the corresponding mounting structure (1-211); Then fasteners are used to connect the mounting structure (1-211) to the corresponding connecting unit (5). At this point, the installation of one power battery (1-3) is complete.

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