A connection support system for a power cell

Abstract

The present application relates to a kind of heavy truck power battery assembly system field, specifically, the connecting support system of power battery, including battery assembly is arranged in the both sides of frame, battery assembly connecting bracket is fixed with battery assembly by installation component;Its characterized in that, adopt the connection of connecting core bar and pass through the both sides of frame and be connected with the connecting bracket of battery assembly by locking device;Battery assembly supporting soft pad is arranged between battery assembly connecting bracket and frame, realize the flexible connection of battery assembly and frame.The connecting support system of power battery of the present application, on the one hand, connect battery frame and frame girder;On the other hand, battery assembly supporting soft pad, by the design of supporting shell, main body rubber damping unit and limiting structure, the vibration and impact transmitted by road can be effectively attenuated;Protect battery system to run well under various road conditions;While suspension system itself has excellent reliability.The structure can realize lifelong maintenance-free, eliminate the work of regular maintenance of driver.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of heavy truck power battery assembly system, in particular to a connecting and supporting system of power battery. BACKGROUND

[0002] The existing heavy truck mostly uses fuel engine system, and the battery system is mainly storage battery, which is mostly attached to one side of the frame girder or placed at the rear end of the frame. Most of the battery systems are light in weight and generally do not have elastic damping elements.

[0003] With the development of new energy power, some heavy truck models have begun to use battery systems as power sources. However, there is no special battery suspension assembly element for the battery system at present. The existing heavy truck power battery system is not designed with a special suspension support system, or the transmission engine suspension is used as a substitute. Therefore, the entire battery system has poor vibration attenuation effect for ground transmission, and even the suspension breaks down prematurely. It cannot effectively connect and limit the protection effect.

[0004] CN222636511.3 discloses a flexible anti-torsion suspension device for power battery, which uses flexible rubber to connect the frame support and the battery box support, increases the anti-torsion capability of the power battery box, and prolongs the service life of the battery box. When the battery box is connected using the device, the material of the battery box can be thinned and lightened, which can save energy and increase the cruising range of the vehicle.

[0005] CN217294252.5 discloses a storage battery suspension support, which includes a connecting support fixedly connected with a storage battery box and a fixed support fixedly connected with a frame. The connecting support and the fixed support are connected by a rubber pad in the longitudinal direction, and a limiting support is fixedly connected to the fixed support, and the rubber pad is located inside the limiting support. The storage battery box and the frame are connected by a flexible rubber pad, and the rubber pad is limited in three directions by the support, so that the rubber pad does not fail due to excessive deformation.

[0006] CN22122369993.8 discloses a battery support, a battery support assembly and a vehicle. The battery support includes a bracket, a hanger connected to the bracket and extending away from the bracket, the hanger and the bracket jointly limit the installation position of the battery, and the hanger is used to connect with the frame, and a fastener is used to fasten the bracket and the hanger.

[0007] The searched patent above also mainly designs the support frame of the main body according to the large volume of the battery, does not design the damping unit or adopts the software for the transmission engine suspension to support the battery system. It realizes the connection with the battery system through the design of the special adapter support, does not design the special rubber damping element for the battery system of the heavy truck, and the damping performance and the reliability of the suspension are poor. The anti-vibration and damping capacity of the battery system cannot be effectively improved.

[0008] Therefore, it is necessary to design a connection support system of a power battery to fill the gap of the suspension support technology of the power battery system of the heavy truck. SUMMARY

[0009] In view of the defects of the prior art, the application discloses a connection support system of a power battery, and designs a battery assembly support cushion for application in a power battery system of a heavy truck. According to the characteristics that the system itself is heavy (the weight of one side reaches about 2 tons) and both sides of the frame need to be arranged to provide sufficient power input for the operation of the whole vehicle, the application specially designs a connection support system of a power battery. On one hand, the connection support system connects the battery frame and the frame girder. On the other hand, the battery assembly support cushion, through the design of a support shell, a main body rubber damping unit and a limiting structure, can effectively attenuate the vibration and impact transmitted from the road surface, protect the battery system from running well under various road conditions, and at the same time, the suspension system itself has excellent reliability. The structure can realize lifelong maintenance-free and eliminate the regular maintenance work of the driver.

[0010] The technical means adopted by the application to solve the above problems are as follows:

[0011] The application discloses a connection support system of a power battery, which comprises a battery assembly arranged on both sides of a frame, a battery assembly connecting support fixed with the battery assembly through an installation component, a connecting core rod penetrating through both sides of the frame and connected with the battery assembly connecting support through a locking device, and a battery assembly support cushion arranged between the battery assembly connecting support and the frame to realize the flexible connection between the battery assembly and the frame.

[0012] Further, the battery assembly support cushion comprises a support shell and a main body rubber damping unit supported in the support shell. The main body rubber damping unit is separately arranged with the support shell and pre-compressed in the Y direction through a locking device. The main body rubber damping unit comprises a core body and a rubber body. The rubber body is arranged between the core body and the support shell. The inner wall of the support shell is symmetrically arranged in a tapered shape to improve the stiffness of the main body rubber damping unit in the X / Y / Z three directions and improve the supporting capacity in the corresponding directions. The support shell is a half-open shell with an open end and an installation end. The open end is provided with a limiting structure. One end of the limiting structure extends into the main body rubber damping unit to limit the position of the main body rubber damping unit and the support shell.

[0013] The battery assembly supporting cushion of the present application uses a main rubber damping unit for vibration resistance and buffering of the battery assembly, and by designing the main rubber damping unit, the stiffness in X / Y / Z three directions can be effectively improved, and the supporting capacity is enhanced, which is especially suitable for the working condition of the battery.

[0014] The inner wall of the supporting shell of the battery assembly supporting cushion of the present application is arranged in a symmetrical conical shape, which provides a mounting space for the rubber body, and at the same time, one side of the main rubber is also arranged in a symmetrical inclined manner, which ensures that the entire supporting cushion structure can be uniformly stressed in all directions and effectively buffered.

[0015] The battery assembly supporting cushion of the present application can be used to reduce and control the vibration and impact transmitted to the power battery, and the rubber part plays a supporting role.

[0016] Further, the core body includes an outer surface and a mounting surface arranged opposite to the outer surface; the cross section of the outer surface is a center-symmetrical polygonal structure, and the polygonal structure center is provided with a mounting hole one. The core body of the present application adopts a symmetrical structure, which can uniformly bear impact in all directions and effectively protect the battery life.

[0017] Further, a connecting vertical surface and a connecting inclined surface are arranged between the outer surface and the mounting surface of the core body, so that the entire core body is in a conical shape and is adapted to the supporting shell. This structure makes the core body and the supporting shell as closely as possible, increasing the use reliability of the entire structure.

[0018] Further, the connecting vertical surface includes a groove surface and a rectangular surface; the groove surface is connected between the outer surface and the mounting surface, and is arranged from the edge of the core body to the center along the Y direction, the groove surface includes an edge one close to the outer surface and an edge two close to the mounting surface side, and the two sides of the groove surface are oppositely provided with groove walls.

[0019] Further, along the X direction, the rectangular surfaces are oppositely arranged at the edges of the core body, and a connecting surface is further arranged between the groove surface and the rectangular surface, the connecting surface extends to the mounting surface side, and a curved surface section is formed between adjacent rectangular surfaces.

[0020] Further, the connecting inclined surface includes a closed transition conical surface connected from the rectangular surface to the mounting surface.

[0021] Further, the rubber body includes a cavity matched with the core body and a bottom surface abutting against the supporting shell, the cavity is provided with a mounting hole two at the center, and the size of the mounting hole two is larger than that of the mounting hole one.

[0022] Further, the bottom surface is provided with a buffer structure protruding towards the supporting shell, and the buffer structure is arranged in parallel with the closed transition conical surface; and the rubber body is further provided with an intermediate partition plate made of metal material or composite fiber plate.

[0023] Further, the limiting structure comprises a transverse protruding portion connected to the inner side of the supporting shell, and the side wall of the core body is provided with a clamping groove, and the transverse protruding portion is embedded in the clamping groove to limit the movement of the core body.

[0024] Further, the outer surface of the core body is a hexahedral structure, and the mounting surface is a rhombic structure.

[0025] Further, the supporting shell is a cubic structure, and the groove-shaped surface and the vertical surface are respectively parallel to the side wall of the supporting shell.

[0026] Another object of the present application is to disclose the application of the above-mentioned battery assembly supporting cushion for heavy truck power battery assembly supporting system to improve the vibration attenuation of the battery system.

[0027] Compared with the prior art, the present application has the following advantages:

[0028] According to the characteristics that the heavy truck power battery system itself is heavy (the unilateral weight reaches about 2 tons) and both sides of the frame need to be arranged to provide sufficient power input for the operation of the whole vehicle, the present application specially designs a battery assembly supporting cushion; on the one hand, the battery frame is connected with the frame girder; on the other hand, the suspended rubber main structure can effectively attenuate the vibration and impact transmitted from the road; the battery system can run well under various road conditions; and the suspended system itself has excellent reliability. The structure can realize lifelong maintenance-free, and eliminates the regular maintenance work of the driver.

[0029] The connecting and supporting system of the power battery can not only be easily installed, but also can effectively improve the vibration attenuation of the battery system. The rubber bodies are symmetrically arranged in pairs with the conical supporting shell, and preferably, four rubber bodies are connected together as a damping system; the vibration and impact transmitted from the road to the battery can be effectively attenuated.

[0030] The battery assembly supporting cushion can be used to reduce and control the vibration and impact transmitted to the power battery, and the rubber part plays a supporting role.

[0031] In summary, the battery assembly supporting cushion improves the reliability of the whole battery system; and has a wide market prospect. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 The overall structure of the battery assembly supporting cushion described in Example 1 is shown in the schematic diagram.

[0033] Figure 2For Figure 1 The top view of the battery assembly supporting soft pad.

[0034] Figure 3 For Figure 2 The structure schematic diagram of A-A direction section of the battery assembly supporting soft pad.

[0035] Figure 4 For Figure 2 The structure schematic diagram of B-B direction section of the battery assembly supporting soft pad.

[0036] Figure 5 For Figure 3 The assembly structure schematic diagram of the battery assembly supporting soft pad Figure 1 .

[0037] Figure 6 For Figure 3 The assembly structure schematic diagram of the battery assembly supporting soft pad Figure 2 .

[0038] Figure 7 The structure schematic diagram of the connecting support system of the power battery according to the embodiment 2.

[0039] Figure 8 The three-dimensional structure schematic diagram of the connecting support system of the power battery according to the embodiment 2.

[0040] Wherein, 1 - support shell, 11 - open end, 12 - mounting end, 2 - main body rubber damping unit, 21 - core body, 211 - outer surface, 212 - mounting surface, 22 - rubber body, 221 - cavity, 222 - bottom surface, 223 - mounting hole two, 23 - mounting hole one, 25 - slot surface, 251 - edge one, 252 - edge two, 26 - rectangular surface, 261 - curved section, 27 - connecting surface, 271 - curved section, 28 - clamping groove, 3 - buffer structure, 4 - limiting structure, 41 - transverse protruding part, 5 - intermediate partition plate, 9 - empty direction, 100 - battery assembly, 200 - locking device, 300 - battery assembly connecting bracket, 400 - battery assembly supporting soft pad, 500 - connecting core rod, 600 - frame. DETAILED DESCRIPTION

[0041] The application will be further described below in conjunction with the drawings. The drawings are only used for exemplary illustration, and the representation is only a schematic diagram, not a physical diagram, and cannot be understood as a limitation on the patent; in order to better illustrate the embodiments of the application, some components of the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; it can be understood by those skilled in the art that some known structures and their descriptions in the drawings can be omitted. Embodiment 1

[0042] AsFigures 1-6 As shown, the battery assembly supporting cushion 400 is a brand-new design, especially developed for heavy truck power battery system, the structure of supporting shell and core is adjusted, under the premise of ensuring product load, the stability of the whole product is improved, and the service life of the product is ensured.

[0043] The battery assembly supporting cushion 400 comprises a supporting shell 1 and a main rubber damping unit 2 supported in the supporting shell 1; the main rubber damping unit 2 is arranged separately from the supporting shell 1 and pre-compressed in the Y direction through a locking device 200.

[0044] Specifically, the main rubber damping unit 2 comprises a core 21 and a rubber body 22; the rubber body 22 is vulcanized between the core 21 and the supporting shell 1, and the inner wall of the supporting shell 1 is arranged in a symmetrical conical shape to improve the stiffness of the main rubber damping unit 2 in X / Y / Z three directions and improve the supporting capacity in the corresponding directions; the supporting shell 1 in the embodiment is a cube structure, the supporting shell 1 is a half-open shell at one end, comprising an open end 11 and a mounting end 12, the open end 11 is provided with a limiting structure 4, one end of the limiting structure 4 extends into the main rubber damping unit 2 to limit the position of the main rubber damping unit 2 and the supporting shell 1. The limiting structure 4 comprises a transverse protruding part 41 connected to the inner side of the supporting shell, the side wall of the core 21 is provided with a clamping groove 28, and the transverse protruding part 41 is embedded in the clamping groove 28 to limit the movement of the core 21, so as to protect the system from interference and even damage with other accessories in extreme cases.

[0045] The supporting shell 1 and the core 21 can be made of cast steel, ductile cast iron or cast aluminum, etc., and are integrally formed by casting. The core 21 in the embodiment is a special polyhedral structure, comprising an outer surface 211 and a mounting surface 212 arranged opposite to the outer surface 211; the cross section of the outer surface 211 is a central-symmetrical polygonal structure, which is octagonal in the embodiment; a mounting hole one 23 is arranged at the center of the polygonal structure for mounting and connecting a core rod 6 to mount the battery assembly supporting cushion 400 on a frame. The outer surface 211 and the mounting surface 212 of the core 21 in the embodiment are provided with a connecting vertical surface and a connecting inclined surface, so that the whole core 21 is conical as a whole and is adapted to the supporting shell 1.

[0046] The connecting vertical surface comprises a groove surface 25 and a rectangular surface 26; the groove surface 25 connects the outer surface 211 and the mounting surface 212 and is arranged from the edge to the center of the core 21 along the Y direction, the groove surface 25 comprises an edge one 251 close to the outer surface 211 and an edge two 252 close to the mounting surface 212, and the two sides of the groove surface 25 are oppositely provided with groove walls.

[0047] Along the X direction, the rectangular surface 26 is arranged opposite to the edge of the core 21, and the connecting surface 27 is further arranged between the groove surface 25 and the rectangular surface 26, the connecting surface 27 extends to one side of the mounting surface 212, and the curved surface section 271 is formed between the adjacent rectangular surfaces 26, and the curved surface section 271 in the embodiment is in V-shaped structure. The connecting inclined surface includes the closed transition conical surface formed by the rectangular surface 26 and the rectangular surface 26 connected with the mounting surface 212.

[0048] The above-mentioned whole core 21 can be divided into two parts, the polyhedral layer extending in the vertical direction close to the outer surface 211 side, which is composed of the rectangular surface 26 and the connecting surface 27 connecting the rectangular surfaces 26, and the groove surface 25 is arranged inclinedly connecting the outer surface 211 and the mounting surface 212, which not only can make the whole cushion structure light in weight, but also can cooperate with the inner wall structure of the supporting shell, so as to effectively cooperate the core 21 with the inner wall of the supporting shell, increase the convenience of assembly and the safety and stability of use. Due to the structural design of the groove surface 25, the assembly position is also provided for the limiting structure 4, and the position of each part can be intuitively judged during installation, thereby saving the installation time.

[0049] The groove surface 25 of the core 21 in the embodiment is in concave structure and cooperates with the limiting structure 4 to be clamped, and the limiting structure 4 is a transverse protruding part 41, which can be a wedge-shaped block. In order to be convenient to install and uniformly stressed, the limiting structure 4 can be installed at the center position of one side wall of the supporting shell, and the bearing inclined surface is arranged on the inner wall of the side wall on the other side, the inclination of the bearing inclined surface is consistent with the inclination of the buffer structure 3, so as to cooperate with the rubber damping unit 2 of the supporting main body. The whole rubber damping unit 2 of the main body protrudes from the supporting shell 1, and the empty space 9 is left at each corner of the supporting shell 1, so as to provide accommodation space for the deformation of the rubber 22.

[0050] The rubber body 22 in the embodiment is covered on one side of the mounting surface 212 of the core 21 and is shaped with the core 21. It includes the cavity 221 adhered with the core 21 and the bottom surface 222 abutting against the supporting shell 1, and the mounting hole two 223 is arranged at the center of the cavity 221, and the size of the mounting hole two 223 is larger than the size of the mounting hole one 23.

[0051] In order to be more reliable in installation with the supporting shell 1, the buffer structure 3 protruding to the supporting shell 1 is arranged at the bottom surface 222, the buffer structure 3 in the embodiment is approximately in cuboid structure, and the buffer structure 3 is arranged parallel to the closed transition conical surface; in order to enhance the strength of the whole rubber body 22, the intermediate partition plate 5 is further arranged inside the rubber body 22, the intermediate partition plate 5 is made of metal material or composite fiber plate, the intermediate partition plate 5 is in stamping forming mode, and the material can be generally steel or aluminum for stamping. The partition plate is vulcanized with the rubber to improve the rigidity of the cushion itself. As another scheme, the intermediate partition plate 5 can also be removed, and the thickness of the rubber body 22 can be increased or decreased. Embodiment 2

[0052] The battery assembly supporting cushion of the above embodiment 1 is used for the connecting support system of the power battery to improve the vibration damping of the battery system.

[0053] As shown in Figure 7 and Figure 8 The connecting support system of the power battery of the embodiment includes a battery assembly 100, a locking device 200 (a locking nut can be selected), a battery assembly connecting bracket 300, and the battery assembly supporting cushion 400, the connecting core rod 500, and the frame 600 shown in embodiment 1; the battery assembly 100 is arranged on both sides of the frame 600, the battery assembly connecting bracket 300 is fixed with the battery assembly 100 through a mounting part; the connecting core rod 500 is used to penetrate the frame 600 on both sides and is connected with the battery assembly connecting bracket 300 through the locking device 200; the battery assembly supporting cushion 400 is arranged between the battery assembly connecting bracket 300 and the frame 600 to realize the flexible connection of the battery assembly 100 and the frame 600.

[0054] The connecting core rod 500, the battery assembly supporting cushion 400, and the battery assembly connecting bracket 300 are rigidly connected in sequence, and finally the locking device 200 is tightened to realize the connection of the battery assemblies on both sides, and the nut can be effectively prevented from loosening during the movement. The cross-sectional structure of the connecting core rod 500 is circular, square, or rhombic.

[0055] The connecting support system of the power battery is connected as a damping system through the four battery assembly supporting cushions 400; the vibration and impact of the road transmitted to the battery can be effectively damped. The connecting core rod 500, the battery assembly supporting cushion 400, and the battery assembly connecting bracket 300 are rigidly connected in sequence, and finally the locking device 200 is tightened to realize the connection of the battery assemblies on both sides, and the nut can be effectively prevented from loosening during the movement.

[0056] The connecting support system of the power battery is connected as a damping system through the four battery assembly supporting cushions 400; the vibration and impact of the road transmitted to the battery can be effectively damped. The connecting core rod 500, the battery assembly supporting cushion 400, and the battery assembly connecting bracket 300 are rigidly connected in sequence, and finally the locking device 200 is tightened to realize the connection of the battery assemblies on both sides, and the nut can be effectively prevented from loosening during the movement.

[0057] The battery assembly supporting cushion 400 and the frame 600 can realize end face contact after being screwed to the bottom of the locking device 200, realizing the horizontal pre-compression effect; on the one hand, the connection of the rubber damping main battery assembly can be realized; on the other hand, the service life of the rubber body can be effectively improved through pre-compression. The battery system can be operated in good condition under various road conditions; at the same time, the suspension system itself has excellent reliability. The structure can realize lifelong maintenance-free, eliminating the regular maintenance work of the driver.

[0058] The above merely is an embodiment of the present application, which is not limited to the above-mentioned embodiment. The present application is not limited to the above-mentioned field, and the common knowledge of the specific structure and characteristics in the scheme is not described in detail. It should be pointed out that for those skilled in the art, without departing from the content of the present application, a number of modifications and improvements can be made, which should be regarded as the protection scope of the present application, and these will not affect the effect and practicability of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A connecting support system of a power battery, comprising a battery assembly (100) arranged on both sides of a vehicle frame (600), and a battery assembly connecting bracket (300) fixed with the battery assembly (100) through a mounting component; characterized in that, The connecting rod (500) is arranged through the frame (600) on both sides and is connected with the battery assembly connecting support (300) through the locking device (200); the battery assembly supporting cushion (400) is arranged between the battery assembly connecting support (300) and the frame (600), so that the flexible connection between the battery assembly (100) and the frame (600) is realized; The battery assembly supporting cushion (400) comprises a supporting shell (1) and a main rubber damping unit (2) arranged in the supporting shell (1); the main rubber damping unit (2) is arranged separately from the supporting shell (1) and is pre-compressed in the Y direction through the locking device; The main rubber damping unit (2) comprises a core body (21) and a rubber body (22); the rubber body (22) is arranged between the core body (21) and the supporting shell (1); the inner wall of the supporting shell (1) is symmetrically arranged in a tapered shape, so as to improve the rigidity of the main rubber damping unit (2) in the X / Y / Z three directions and improve the supporting capacity in the corresponding directions; The supporting shell (1) is a half-open shell at one end and comprises an open end (11) and a mounting end (12); the open end (11) is provided with a limiting structure (4); one end of the limiting structure (4) extends into the main rubber damping unit (2), so as to limit the position of the main rubber damping unit (2) and the supporting shell (1); The core body (21) comprises an outer surface (211) and a mounting surface (212) arranged opposite to the outer surface (211); the outer surface (211) is a center-symmetric polygonal structure in cross section, and a mounting hole one (23) is arranged at the center of the polygonal structure; a connecting vertical surface and a connecting inclined surface are arranged between the outer surface (211) and the mounting surface (212), so that the entire core body (21) is conical and is adapted to the supporting shell (1); The connecting vertical surface comprises a groove surface (25) and a rectangular surface (26); the groove surface (25) connects the outer surface (211) and the mounting surface (212) and is arranged from the edge of the core body (21) to the center along the Y direction; the groove surface (25) comprises an edge one (251) close to the outer surface (211) and an edge two (252) close to the mounting surface (212) on one side; groove walls are arranged opposite to each other on both sides of the groove surface (25).

2. The connection support system of the power battery according to claim 1, characterized in that, Along the X direction, the rectangular surfaces (26) are arranged opposite to each other at the edges of the core body (21); a connecting surface (27) is further arranged between the groove surface (25) and the rectangular surface (26); the connecting surface (27) extends to the side of the mounting surface (212) and forms a curved surface section (261) between adjacent rectangular surfaces (26).

3. The system of claim 2, wherein the support structure is a support structure of a power battery. The connecting inclined surface comprises a rectangular surface (26) and a closed transition tapered surface connected from the rectangular surface (26) to the mounting surface (212).

4. The system of claim 3, wherein the support structure is a support structure of a power battery. The rubber body (22) comprises a cavity (221) attached to the core body (21) and a bottom surface (222) abutting against the supporting shell (1), and the cavity (221) is provided with a mounting hole two (223) in the center, and the size of the mounting hole two (223) is larger than that of the mounting hole one (23).

5. The power cell connection support system of claim 4, wherein, The bottom surface (222) is provided with a buffer structure (3) protruding towards the supporting shell (1), and the buffer structure (3) is arranged in parallel with the closed transition conical surface; and the rubber body (22) is further provided with an intermediate partition plate (5), and the intermediate partition plate (5) is made of metal material or composite fiber plate.

6. The connection support system of the power cell according to any one of claims 1 to 5, wherein The limiting structure (4) comprises a transverse protruding portion (41) connected to the inner side of the supporting shell, and the side wall of the core body (21) is provided with a clamping groove (28), and the transverse protruding portion (41) is embedded in the clamping groove (28) to limit the movement of the core body (21).

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