Battery pack support and vehicle

Abstract

The utility model discloses a battery pack support and a vehicle, and relates to the technical field of battery pack supports, the battery pack support comprises two side frames and at least two hanging brackets, the two side frames are respectively used for being installed on the two sides of a battery shell in the length direction, and one side frame is connected with a vehicle frame through at least one hanging bracket. The utility model aims to reduce the weight of the battery pack bracket as much as possible on the premise of meeting the strength and safety performance of the battery pack bracket.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pack brackets, and in particular to a battery pack bracket and a vehicle. Background Art

[0002] The battery pack occupies a large weight, and the relevant technology often uses a frame-structured battery pack bracket to support the battery pack. At present, with the active promotion of the country's "dual carbon" policy and the needs of environmental protection and energy conservation, vehicle lightweighting has become a trend in the development of the world's automobiles. This type of battery pack bracket occupies a large weight, which is not conducive to vehicle lightweighting; but to reduce the weight of the battery pack bracket, it is necessary to reduce the overall mass of the battery pack bracket as much as possible under the premise of meeting the strength and safety performance of the battery pack bracket. Utility Model Content

[0003] The main purpose of the utility model is to propose a battery pack bracket and a vehicle, aiming to reduce the weight of the battery pack bracket as much as possible while meeting the strength and safety performance of the battery pack bracket, thereby reducing the weight of the vehicle after the rear frame is installed, and meeting the requirements of lightweight vehicle.

[0004] In order to achieve the above-mentioned purpose, the utility model proposes a battery pack bracket, comprising:

[0005] Two side frames, the two side frames are respectively installed on both sides of the length direction of the battery shell; and

[0006] at least two hangers, one of the side frames being connected to the frame via at least one of the hangers;

[0007] Part of the upper edge of the side frame extends outward to form a mounting section, and the side frame is provided with at least one mounting section at a position close to both ends, and one mounting section is connected and fixed to one of the hangers.

[0008] In one embodiment, the length of the side frame is at least half of the length of the battery case and is not greater than the length of the battery case.

[0009] In one embodiment, the side frame is provided with a plurality of mounting portions at intervals along its length direction, and the plurality of mounting portions are used to be connected and fixed to the battery shell.

[0010] In one embodiment, the battery pack bracket further includes a reinforcing bracket, and the reinforcing bracket includes a first fixed section and a second fixed section that are bent and connected to each other, the first fixed section is connected to the side frame; the second fixed section is connected to the mounting section.

[0011] In one embodiment, the reinforcing bracket further includes a plurality of support plates, wherein the plurality of support plates are all connected to the first fixing section and the second fixing section, and an escape space is defined between two adjacent support plates, wherein the first fixing section is provided with a first fixing hole in the escape space, and the second fixing section is provided with a second fixing hole in the escape space, and both the first fixing hole and the second fixing hole are used for fasteners to pass through and fix the reinforcing bracket to the side frame.

[0012] In one embodiment, the side frame includes a ventral surface, an upper wing surface and a lower wing surface located on the upper and lower sides of the ventral surface, the upper wing surface and the lower wing surface both extend outward, and the mounting section is configured as a part of the upper wing surface.

[0013] In one embodiment, the side frame has different thicknesses in the up-down direction, and the thicknesses of the upper wing surface and the ventral surface are greater than the thickness of the lower wing surface.

[0014] In one embodiment, the two side frames are symmetrical about a center line in the length direction of the battery pack.

[0015] In one embodiment, the hanger is symmetrical about the vertical centerline of the side frame body.

[0016] In one embodiment, the reinforcing bracket is symmetrical about an extension line of the connection.

[0017] In one embodiment, the hanger includes a bottom plate and two side plates connected to the bottom plate, one side of the two side plates are connected, and the bottom plate and the other side of the two side plates enclose a hollow cavity; the bottom plate is connected to the mounting section, and the two side plates are used to connect to the frame.

[0018] In one embodiment, the side frame, the hanger and the reinforcement bracket are all made of aluminum alloy.

[0019] In one embodiment, the side frame, the hanger and the reinforcement bracket are configured as extruded parts or cast parts.

[0020] The utility model also provides a vehicle, comprising:

[0021] A battery pack, the battery pack comprising a battery case;

[0022] A battery pack holder as described above; and

[0023] The vehicle frame, the two side frames are respectively installed on both sides of the length of the battery shell, and one of the side frames is connected to the vehicle frame through at least one of the hangers.

[0024] The technical solution of the utility model adopts two side frames to be installed on opposite sides of the length of the battery shell, and one of the side frames is connected to the vehicle frame through at least one of the hangers. Compared with the traditional battery pack bracket solution, the side frame structure and the bottom supporting structure are eliminated; through the cooperation of the battery shell and the side frame, the weight of the battery pack bracket is reduced as much as possible under the premise of ensuring structural stability, thereby reducing the weight of the vehicle and meeting the requirements of lightweight vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 A schematic structural diagram of an embodiment of a vehicle provided by the utility model;

[0027] Figure 2 for Figure 1 A schematic structural diagram of an embodiment of a middle side frame;

[0028] Figure 3 for Figure 1 A schematic structural diagram of an embodiment of a middle hanger;

[0029] Figure 4 for Figure 1 A schematic structural diagram of an embodiment of a middle reinforcing bracket.

[0030] Description of Figure Numbers:

[0031] 100, battery pack bracket; 110, side frame; 111, belly surface; 112, upper wing surface; 113, lower wing surface; 114, installation part; 115, installation section; 116, weight reduction hole; 117, outer side; 120, hanger; 121, bottom plate; 122, side plate; 123, cavity; 124, reinforcing rib; 125, bolt hole; 130, reinforcing bracket; 131, first fixing section; 132, second fixing section; 133, support plate; 134, avoidance space; 135, first fixing hole; 136, second fixing hole; 200, battery pack; 210, battery shell; 300, frame; 310, longitudinal beam.

[0032] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0036] The vehicle's curb weight is not only the main parameter that affects the range of electric vehicles, but also the main factor that improves the vehicle's mass utilization factor, thereby improving transportation efficiency and reducing transportation costs. Take new energy light trucks as an example. Unlike traditional diesel or gasoline trucks, new energy light trucks use new energy to drive. New energy light trucks usually use clean energy such as electricity or hydrogen fuel to drive the vehicle. This type of light truck plays an important role in logistics, transportation, and distribution.

[0037] New energy light trucks use advanced battery technology, electric drive systems, etc., and have good endurance and power performance. However, the brackets that fix the battery packs are often heavy. In order to reduce the weight of the battery pack brackets, the need to fix the battery packs on the frame must be met at the same time.

[0038] The utility model proposes a battery pack bracket, which aims to reduce the weight of the battery pack bracket as much as possible under the premise of structural stability, thereby reducing the weight of the vehicle and meeting the requirement of lightweight vehicle.

[0039] See also Figure 1 In one embodiment of the utility model, the battery pack bracket 100 includes two side frames 110 and at least two hangers 120, the battery pack 200 includes a battery shell 210, and the two side frames 110 are respectively installed on both sides of the length of the battery shell 210; one of the side frames 110 is connected to the frame 300 through at least one of the hangers 120.

[0040] The front direction is defined as the front, and the rear direction is defined as the rear. The battery pack 200 is generally rectangular in shape, and the length direction of the battery pack 200 is the front-to-back direction. The battery pack 200 is arranged below the longitudinal beam 310 of the vehicle frame 300. The battery shell 210 of the battery pack 200 can be connected to the side frame 110, such as by welding, riveting, or bolting. The side frame 110 is in the shape of a long strip. In one embodiment, the side frame 110 extends to the end of the battery shell 210, and the length of the side frame 110 is similar to the length of the battery shell 210. The side frame 110 is integrally connected to the battery shell 210 in the length direction to ensure stable force. In another embodiment, the side frame 110 is at least half the length of the battery shell 210 to ensure the force range of the battery shell 210 and the side frame 110. Compared with two separate block-shaped side frames 110 or a solution in which the battery shell 210 is only connected to the hanger 120 and hoisted on the frame 300, the side frame 110 can provide support for the middle part of the battery shell 210, and can better ensure the stability of the battery pack 200 on curved sections.

[0041] In order to reduce the mass of the side frame 110 and the hanger 120 while ensuring the strength of the side frame 110 and the hanger 120, the side frame 110 and the hanger 120 are made of aluminum alloy, such as extruded aluminum parts manufactured by extrusion technology; or cast aluminum parts.

[0042] After the side frame 110 is connected to the battery shell 210 , the longitudinal beams 310 of the vehicle frame 300 are respectively connected through the hanger 120 , so that the battery shell 210 is hung below the longitudinal beam 310 to complete the installation.

[0043] It can be understood that in one embodiment, there are two hangers 120, one hanger 120 is set on each of the left and right longitudinal beams 310, and the side frames 110 are connected by the two hangers 120. Because the battery pack 200 has a large mass, in order to avoid shaking at both ends, the hangers 120 need to be extended to form a "human" shape structure.

[0044] In one embodiment, in order to facilitate installation and reduce the processing cost of the hanger 120, two hangers 120 are used on each longitudinal beam 310, for a total of four. This can not only ensure the stability of the hoisting and reduce the processing cost; but also make packaging more convenient when the battery pack 200 hanger 120 is subsequently transported in bulk.

[0045] After the battery pack 200 is assembled, the front and rear sides of the battery pack 200 can be used for wiring harnesses to pass through, facilitating wiring connections.

[0046] The technical solution of the utility model adopts two side frames 110 to be installed on opposite sides of the length of the battery shell 210, and at least two hangers 120 are respectively connected to one of the side frames 110 and used to connect to the vehicle frame 300. Compared with the traditional solution, the side frame structure and the bottom supporting structure are eliminated; in this way, the weight of the battery pack bracket 100 can be reduced as much as possible under the premise of satisfying structural stability, thereby reducing the weight of the vehicle and meeting the requirements of lightweight vehicle.

[0047] See also Figure 1 and Figure 2 In order to facilitate the connection between the side frame 110 and the battery shell 210 of the battery pack 200 , the side frame 110 is provided with a plurality of mounting portions 114 at intervals along its own extension direction, and the plurality of mounting portions 114 are used to be connected and fixed to the battery shell 210 .

[0048] In one embodiment, the mounting portion 114 is a male and female plug that matches the battery shell 210 , and the side frame 110 and the battery shell 210 can be docked after being plugged in.

[0049] In one embodiment, in order to reduce costs and meet the connection requirements, the mounting portion 114 includes a plurality of screw holes arranged in an array, and the plurality of screw holes are used for fasteners to pass through and fix to the battery shell 210. The array arrangement can be a square array, and the screw holes are arranged in a regular square, usually equidistantly. This arrangement is simple and intuitive and suitable for most cases. Or a rectangular array, which is similar to a square array, but the screw holes are arranged in a rectangular form, and the length and width ratio can be adjusted as needed. It can also be a triangular array, and the screw holes are arranged in a triangular form to save space.

[0050] See also Figure 2 In order to facilitate the connection between the hanger 120 and the side frame 110 and to minimize weight, the side frame 110 has an inner side surface close to the battery shell 210 and an outer side surface 117 away from the inner side surface. The upper edge of the side frame 110 extends toward the outer side surface 117 to form a mounting section 115. The mounting section 115 includes two mounting sections 115, which are respectively located at two ends of the side frame 110. One mounting section 115 is connected and fixed to one hanger 120.

[0051] At this time, the side frame 110 is equivalent to a plate structure. In order to further reduce the weight of the side frame 110, the side frame 110 is further provided with a plurality of weight-reducing holes 116. The weight-reducing holes 116 and the mounting portions 114 are alternately arranged on the side frame 110. The shape and style of the mounting holes are not limited, and can be circular, elliptical, etc.

[0052] See also Figure 1 and Figure 4 In order to strengthen the structural strength of the side frame 110, the battery pack bracket 100 also includes a reinforcing bracket 130, and the reinforcing bracket 130 includes a first fixed section 131 and a second fixed section 132 that are bent and connected to each other. The first fixed section 131 is connected to the side frame 110; the second fixed section 132 is connected to the mounting section 115.

[0053] Specifically, the reinforcing bracket 130 also includes a plurality of support plates 133, and the plurality of support plates 133 are all connected to the first fixing section 131 and the second fixing section 132, and an escape space 134 is defined between two adjacent support plates 133, the first fixing section 131 is provided with a plurality of first fixing holes 135 in the escape space 134, and the second fixing section 132 is provided with a plurality of second fixing holes 136 in the escape space 134, and the plurality of first fixing holes 135 and the plurality of second fixing holes 136 are both used for fasteners to pass through and fix the reinforcing bracket 130 to the side frame 110.

[0054] In addition, the reinforcing bracket 130 is made of aluminum alloy. The reinforcing bracket 130 can be a cast aluminum part or an extruded part, which can reduce the overall weight while meeting the structural strength.

[0055] During assembly, bolts are passed through the first fixing holes 135 to fix the first fixing section 131 to the side frame 110, and then through the battery shell 210 to fix the reinforcing bracket 130, the side frame 110, and the battery shell 210 together; three bolt holes 125 are arranged on the installation section 115 along the extension direction of the side frame 110, and the bottom of the hanger 120 is also correspondingly provided with the same number of bolt holes 125, and then the bolts are passed from bottom to top through the second fixing holes 136 and the bolt holes 125 of the hanger 120, and the second fixing section 132, the installation section 115, and the hanger 120 are assembled together to complete the overall installation.

[0056] See also Figure 2In order to strengthen the structural strength of the side frame 110 without increasing the overall mass of the side frame 110 too much, the side frame 110 includes a belly surface 111, an upper wing surface 112 and a lower wing surface 113 located at the upper and lower sides of the belly surface 111, the upper wing surface 112 and the lower wing surface 113 both extend outward, and the mounting section 115 is configured as a part of the upper wing surface 112. The side frame 110 is equivalent to an I-beam structure, which ensures light weight and is not prone to edge tearing.

[0057] In order to reduce the weight of the side frame 110 as much as possible after meeting the strength requirement, the thickness of the side frame 110 in the up and down directions is different, and the thickness of the upper wing surface 112 and the belly surface 111 is greater than the thickness of the lower wing surface 113.

[0058] See also Figure 1 and Figure 3 In order to ensure the lightness of the hanger 120, the hanger 120 includes a bottom plate 121 and two side plates 122 connected to the bottom plate 121, and the bottom plate 121 and the two side plates 122 enclose a hollow cavity 123; the bottom plate 121 is connected to the mounting section 115, and the two side plates 122 are used to connect to the frame 300.

[0059] The hanger 120 needs to bear the weight of the battery pack 200. In order to make the hanger 120 have sufficient structural strength, at least two reinforcing ribs 124 are provided in the cavity 123. The at least two reinforcing ribs 124 separate the cavity 123 to form a plurality of reinforced cavities.

[0060] The hollow cavity 123 formed by the bottom plate 121 and the two side plates 122 can increase the structural strength of the entire hanger 120, making it more stable. Due to the hollow structure, the hanger 120 is lighter than a solid structure, thereby reducing the weight of the entire vehicle. The bottom plate 121 is connected to the mounting section 115, and the two side plates 122 are used to connect to the vehicle frame 300. This design may make the installation of the hanger 120 easier, saving installation time and cost. Since the connection method between the bottom plate 121 and the two side plates 122 may be more flexible, the hanger 120 may be suitable for vehicles of different models or sizes, and has certain versatility and adaptability.

[0061] Specifically, the two side frames 110 are symmetrical about a center line of the length direction of the battery pack 200 .

[0062] Specifically, the hanger 120 is symmetrical about the vertical centerline of the side frame 110 body.

[0063] Specifically, the reinforcing bracket 130 is symmetrical about the extension line of the connection.

[0064] It should be noted that the side frame 110, the reinforcing bracket 130 and the hanger 120 are standard parts and can be used regardless of left or right. The reinforcing bracket 130 and the hanger 120 are universal parts, which is conducive to simplifying the production process and inventory management, and also means that mass production can enjoy the advantages of economies of scale. Compared with the reinforcing bracket 130 and the hanger 120 that are distinguished by left and right, they may be misinstalled during installation, resulting in improper installation or affecting the performance of the vehicle. The battery pack bracket 100 of the present application adopts a symmetrical structure to reduce this risk and make installation simpler and more reliable.

[0065] The utility model also proposes a vehicle, which includes a frame 300, a battery pack 200 and a battery pack bracket 100. The specific structure of the battery pack bracket 100 refers to the above embodiment. Since the vehicle adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here. Among them, the battery pack 200 includes a battery shell 210; the frame 300 includes two longitudinal beams 310, and two side frames 110 are respectively connected to the battery shell 210, and one of the side frames 110 is connected to the longitudinal beam 310 of the frame 300 through at least one of the hangers 120.

[0066] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A battery pack bracket for fixing a battery pack, wherein the battery includes a battery shell, characterized in that: The battery pack bracket comprises: Two side frames, the two side frames are respectively installed on both sides of the length direction of the battery shell; and At least two hangers, one of the side frames is connected to the frame through at least one of the hangers; wherein, A portion of the upper edge of the side frame extends outward to form a mounting section. The side frame is provided with a mounting section at least at a position close to both ends. One mounting section is connected and fixed to one of the hangers.

2. The battery pack bracket according to claim 1, characterized in that: The length of the side frame is at least half of the length of the battery case and is not greater than the length of the battery case.

3. The battery pack bracket according to claim 1, characterized in that: The side frame is provided with a plurality of mounting portions at intervals along its length direction, and the plurality of mounting portions are used to be connected and fixed with the battery shell.

4. The battery pack bracket according to claim 1, characterized in that: The battery pack bracket also includes a reinforcing bracket, which includes a first fixed section and a second fixed section that are bent and connected to each other, the first fixed section is connected to the side frame; the second fixed section is connected to the mounting section.

5. The battery pack bracket according to claim 4, characterized in that: The reinforcing bracket also includes a plurality of support plates, each of which is connected to the first fixing section and the second fixing section, and an escape space is defined between two adjacent support plates, the first fixing section is provided with a first fixing hole in the escape space, the second fixing section is provided with a second fixing hole in the escape space, and the first fixing hole and the second fixing hole are both used for fasteners to pass through and fix the reinforcing bracket to the side frame.

6. The battery pack bracket according to claim 4, characterized in that: The side frame includes a ventral surface, an upper wing surface and a lower wing surface located on upper and lower sides of the ventral surface, the upper wing surface and the lower wing surface both extend outward, and the mounting section is configured as a part of the upper wing surface.

7. The battery pack bracket according to claim 6, characterized in that: The side frame has different thicknesses in the up-down direction, and the thicknesses of the upper wing surface and the ventral surface are greater than the thickness of the lower wing surface.

8. The battery pack bracket according to claim 4, characterized in that: The two side frames are symmetrical about the center line axis in the length direction of the battery pack; and / or, the hanger is symmetrical about the vertical center line axis of the side frame body; and / or, the reinforcing bracket is symmetrical about the extension line axis of the connection.

9. The battery pack bracket according to claim 1, characterized in that: The hanger includes a bottom plate and two side plates connected to the bottom plate, one side of the two side plates are connected, and the bottom plate and the other side of the two side plates enclose a hollow cavity; the bottom plate is connected to the mounting section, and the two side plates are used to connect to the vehicle frame.

10. The battery pack bracket according to any one of claims 4 to 8, characterized in that: The side frame, the hanger and the reinforcement bracket are all made of aluminum alloy; and / or The side frames, the hanger and the reinforcement bracket are configured as extruded parts or cast parts.

11. A vehicle, characterized in that: include: A battery pack, the battery pack comprising a battery case; The battery pack bracket according to any one of claims 1 to 10; and The vehicle frame, the two side frames are respectively installed on both sides of the length of the battery shell, and one of the side frames is connected to the vehicle frame through at least one of the hangers.

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