Battery PACK hoisting structure

Abstract

The utility model relates to the technical field of electric automobile batteries, in particular to a battery PACK hoisting structure which comprises a hoisting block, the hoisting block is of a block-shaped structure with a triangular section, a hoisting hole channel penetrating through the hoisting block is formed in the waist portion of the hoisting block, and a fixing block with a triangular section is arranged at the top in the channel. The bottom face of the fixing block is an arc face extending towards the hoisting hole channel. The tray is of a rectangular plate-shaped structure, the tray is of a three-layer composite structure, through fixing holes are evenly distributed in the edge of the surface of the tray, and the fixing holes are matched with the hoisting blocks; the problem that in the prior art, a hoisting hole of a battery tray is horizontal, stress concentration is easily caused by a hoisting module, and the damage defect of a hoisting structure is accelerated is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicle batteries, in particular to a battery PACK hoisting structure. Background Art

[0002] With the increasing requirements of the country for environmental protection and the improvement of people's environmental awareness, the battery technology industry is developing rapidly. Among them, lithium battery technology is the most accepted energy technology for alleviating environmental and energy problems. Now with the development of the lithium battery industry, energy storage systems are developing in the direction of high voltage, large capacity, clustering and scale.

[0003] With the vigorous development of battery technology, electric vehicles are becoming more and more popular as new energy green transportation tools. Since electric vehicles use on-board batteries to supply power to the motor to output power, they have significant effects in energy saving and environmental protection. Compared with traditional fuel vehicles, the popularity of electric vehicles has temporarily alleviated the current severe environmental and energy problems, but the safety of electric vehicles is still a difficult problem. Battery PACK, as the core component of electric vehicles, is a whole composed of several "battery cells", usually composed of multiple batteries, and designed into a series of reusable, adjustable and replaceable modules. These modules can be assembled as needed to form battery packs of different capacities to meet the driving force of different models and requirements. The safety requirements for battery PACK are extremely strict during production. When assembling electric vehicles, it is necessary to ensure that the structural strength of the battery PACK is not affected and the battery tray with the battery PACK installed is stably installed in the frame to avoid the battery PACK from tipping over or bumping during installation, which may cause serious safety accidents such as explosion of the battery PACK.

[0004] In the battery tray and battery pack with publication number CN207938676U, the battery tray of this technology adopts a welded L-shaped lifting module, which effectively solves the problem of excessive stress in the weld between the lifting module and the battery tray causing breakage during lifting. However, this technology uses horizontal lifting holes, and the lifting tools need to be hooked in from the bottom of the lifting structure. When lifting upward, the force direction of the lifting structure is not always along the lifting direction, which causes the gravity to be concentrated on the edge of the lifting hole of the lifting module of this technology, thereby accelerating the aging of the lifting module.

[0005] In the lifting ear structure, battery tray, and vehicle with publication number CN210792779U, although the battery tray of this technology solves the problem of side wall folding and crushing of the battery tray by extending the length of the lifting arm and increasing the lifting area, the use of horizontal lifting holes will increase the stress of the extended lifting arm during lifting, resulting in damage. Utility Model Content

[0006] A battery PACK hoisting structure solves the problem in the prior art that the hoisting holes of the battery tray are horizontal, which causes stress concentration in the hoisting module and accelerates the damage of the hoisting structure.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A battery PACK hanging structure comprises a hanging block, which is a block structure with a triangular cross section, and a hanging channel penetrating the hanging block is provided at the waist of the hanging block, the top of the channel is a fixing block with a triangular cross section, and the bottom surface of the fixing block is an arc surface extending toward the hanging channel; a tray, which is a rectangular plate structure, and the tray is a three-layer composite structure, and the edges of the tray surface are evenly distributed with through fixing holes, the fixing holes cooperate with the hanging block, and the arc surface of the top surface of the hanging channel is used for effectively uniformly loading the arc surface when the hanging channel cooperates, thereby reducing the problem of excessive local stress of the fixing block of the hanging block.

[0009] Preferably, the lower part of the lifting channel provided in the lifting block is a plate-shaped fixing plate, and through holes are provided on the fixing plates at both ends of the lifting channel, and the through holes match the fixing holes.

[0010] Preferably, the lifting block is also provided with two side panels, which are connected to the lifting block parallel to the lifting channel and are integrally formed, and the bottoms of the two side panels are connected to the fixing plate and are integrally formed, and the lifting channel is used to cooperate with the lifting hook of the lifting equipment.

[0011] Preferably, a lower shell bracket is further provided at the bottom of the tray, which is a rectangular frame structure, and a through hole 2 matching the fixing hole is provided on the frame of the lower shell bracket, and the lower shell bracket is installed at the bottom of the tray.

[0012] Preferably, the pallet is formed by a composite of three layers of plate materials, the surface of which is a hard metal plate, the middle layer is a high-hardness alloy plate, and the bottom layer is an elastic material plate. The battery PACK is placed on the surface of the hard metal plate, which has the effect of heat insulation and flame retardancy. Secondly, when the pallet area is large, the strength of the center of the pallet is insufficient during hoisting. The high-hardness alloy plate has the effect of increasing the overall hardness and rigidity of the pallet. The elastic material plate is used to increase the buffering effect when assembled with the lower shell bracket.

[0013] Preferably, there are four lower shell brackets, which are respectively located at the bottom of the edges of the tray, and the through holes provided in the lower shell brackets correspond to the tray fixing blocks and are fixed by threaded connection. The lower shell brackets are arranged around the tray to avoid direct contact with the bottom surface of the tray to reduce bumps when the battery PACK is placed alone. Secondly, the lower shell brackets are used to fix to the frame chassis during hoisting installation.

[0014] Preferably, it also includes an assembly screw and an assembly nut, wherein the assembly screw matches the assembly nut, and the assembly screw passes through the through hole 1 and the fixing hole.

[0015] Preferably, the assembly screw passes through the second through hole of the lower shell bracket, so that the lifting block, the tray and the lower shell bracket are fixedly connected as one, and the assembly nut is installed on the assembly screw at the bottom of the lower shell bracket.

[0016] Preferably, at least two lifting blocks are provided at each edge of the pallet to avoid excessive load pressure on one side of the pallet due to lifting. Secondly, if there is only one lifting block on one side, the shear force on one side of the pallet will be too large, causing bending. Therefore, at least two lifting blocks should be provided on one side of the pallet. The number of lifting blocks can be reasonably increased according to the different sizes of pallets.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model can realize the hoisting of the battery PACK without causing stress concentration and damage to the battery PACK structure. The assembly process of the hoisting structure of the utility model is simple and smooth, and it is compatible with different hoisting tools. The hoisting structure has a large load and is suitable for different battery PACKs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0020] Figure 2 It is a schematic exploded view of the overall structure of an embodiment of the utility model.

[0021] Figure 3 for Figure 2 A partial enlarged view of part A in the middle.

[0022] Figure 4 The utility model is a schematic cross-sectional view of a lifting block structure according to an embodiment of the utility model.

[0023] In the figure: lower shell bracket 1, through hole 2 1.1, lifting block 2, fixing block 2.1, lifting channel 2.2, through hole 1 2.3, fixing plate 2.4, side plate 2.5, assembly screw 3, assembly nut 4, tray 5, hard metal plate 5.1, high hardness alloy plate 5.2, elastic material plate 5.3, fixing hole 5.4. DETAILED DESCRIPTION

[0024] 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 in 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.

[0025] The battery tray of the prior art adopts a welded L-shaped lifting module, which effectively solves the problem of excessive stress in the weld between the lifting module and the battery tray causing fracture during lifting. However, the technology adopts horizontal lifting holes, and the lifting tooling needs to be hooked in from the bottom of the lifting structure. When lifting upward, the force direction of the lifting structure is always not along the lifting direction, which causes the gravity to concentrate on the edge of the lifting hole of the lifting module of the technology, thereby accelerating the aging of the lifting module. In addition, although the battery tray of the prior art solves the problem of battery failure by extending the length of the lifting arm and increasing the lifting area, The side wall of the pool tray is folded and crushed, but the use of horizontal lifting holes will increase the stress of the extended lifting arm during lifting, resulting in damage. In order to solve the above problem, the present embodiment is provided, which includes a lower shell bracket 1, a through hole 1.1, a lifting block 2, a fixing block 2.1, a lifting channel 2.2, a through hole 2.3, a fixing plate 2.4, a side plate 2.5, an assembly screw 3, an assembly nut 4, a tray 5, a hard metal plate 5.1, a high hardness alloy plate 5.2, an elastic material plate 5.3, and a fixing hole 5.4.

[0026] See also Figure 1 , Figure 2 , Figure 3 This embodiment is a battery PACK lifting structure, including a lifting block 2, which is a block structure with a triangular cross section, and the waist of the lifting block is provided with a lifting channel 2.2 that penetrates the lifting block, the top of the channel is a fixed block 2.1 with a triangular cross section, and the bottom surface of the fixed block is an arc surface extending toward the lifting channel; the tray 5 is a rectangular plate structure, and the tray is a three-layer composite structure, and the edge of the tray surface is evenly distributed with through fixing holes 5.4, and the fixing holes cooperate with the lifting block. The arc surface of the top surface of the lifting channel is used to effectively evenly load the arc surface when the lifting channel cooperates, reducing the problem of excessive local stress in the fixed block of the lifting block.

[0027] The battery PACK hoisting structure of this embodiment, with its unique design, effectively improves the safety and stability of the hoisting process. The hoisting block 2, with its special triangular cross-section and hoisting channel 2.2, enables the hoisting block to evenly distribute the load when subjected to force, reducing the problem of excessive local stress. In addition, the design of the fixing block 2.1 further enhances the stability of the hoisting block.

[0028] In addition, the rectangular plate structure and three-layer composite structure of the tray 5 make the tray have high strength and stability. The fixing holes 5.4 on the surface of the tray are evenly distributed and cooperate with the lifting blocks, making the lifting process more stable. This design effectively improves the safety and stability of the battery PACK during the lifting process.

[0029] The curved surface of the top surface of the hoisting channel is another highlight of this embodiment. When the hoisting channel is matched, the existence of the curved surface enables the load to be evenly distributed inside the hoisting channel, thereby reducing the local stress of the hoisting block and improving the stability of the hoisting process.

[0030] like Figure 2 and 4 As shown, the lower part of the lifting channel 2.2 provided in the lifting block 2 is a plate-shaped fixing plate 2.4, and the fixing plates at both ends of the lifting channel are provided with through holes 2.3, and the through holes 2.3 match the fixing holes 5.4.

[0031] The lifting block is also provided with two side panels 2.5, which are parallel to the lifting channel 2.2 and connected to the two side surfaces of the lifting block 2 and are integrally formed, and the bottoms of the two side panels are connected to the two side surfaces of the fixing plate 2.4 and are integrally formed. The lifting channel is used to cooperate with the lifting hook of the lifting equipment, and the side panels are integrally formed with the fixing block and the fixing plate, and the side panels connect the fixing block and the fixing plate.

[0032] The design of the lifting block 2 is not only convenient for lifting the equipment, but also fully considers stability and safety. Two side panels 2.5 are provided on both sides of the lifting block. The two side panels are parallel to the lifting channel 2.2 and connected to the two side surfaces of the lifting block 2 to form a stable structure. This one-piece design makes the connection between the side panels and the fixing plate 2.4 more secure, ensuring the stability of the lifting block during the lifting process.

[0033] The design of the lifting channel 2.2 is to perfectly match the lifting hook of the lifting equipment. In actual operation, the lifting hook can smoothly pass through the lifting channel, making the lifting process more convenient. At the same time, the connection between the side plate and the fixed block and the fixed plate also makes the structure of the entire lifting block more solid, greatly improving safety.

[0034] This one-piece lifting block design not only makes the lifting of equipment easier, but also improves work efficiency. This type of lifting block can be seen in various engineering practices, such as construction, bridges, machinery and other fields. It provides an efficient, safe and stable lifting solution for my country's engineering construction.

[0035] The design of the lifting block 2 is also reflected in its details. For example, the bottom of the side plate 2.5 is connected to the two sides of the fixing plate 2.4. This design not only ensures the stability of the structure, but also enables the lifting block to better withstand various moments during the lifting process. This sophisticated design makes the lifting block more reliable during use and greatly reduces the risk of accidents.

[0036] like Figure 2 and 3 As shown, a lower shell bracket 1 is also provided at the bottom of the tray 5, which is a rectangular frame structure. The tray is the main carrier for carrying the battery, so the material selection of the tray is also particularly important, and a through hole 1.1 matching the fixing hole 5.4 is provided on the frame of the lower shell bracket. The lower shell bracket is installed at the bottom of the tray. The lower shell bracket is used for hoisting the tray and can also contact the ground instead of the tray when it is stationary, so as to avoid damage caused by collision between the tray and the ground.

[0037] The tray 5 is formed by a composite of three layers of plates, the surface is a hard metal plate 5.1, the middle layer is a high-hardness alloy plate 5.2, and the bottom layer is an elastic material plate 5.3. The surface is a hard metal plate, the middle layer is a high-hardness alloy plate, and the bottom layer is an elastic material plate. The battery PACK is placed on the surface of the hard metal plate, which has the effect of heat insulation and flame retardancy. Secondly, when the area of ​​the tray is large, the strength of the center of the tray is insufficient during hoisting. The high-hardness alloy plate has the effect of increasing the overall hardness and rigidity of the tray. The elastic material plate is used to increase the buffering effect when assembled with the lower shell bracket.

[0038] The design of the pallet 5 not only takes into account the performance of the material, but also fully considers the rationality of the structure. A battery PACK is provided on the surface of the hard metal plate 5.1, which not only plays a role in heat insulation and flame retardancy, but also protects the battery PACK from damage by the external environment. In addition, the high-hardness alloy plate 5.2 is located in the middle layer, mainly used to increase the overall hardness and rigidity of the pallet. When the pallet area is large, the strength of the center part is insufficient during hoisting, and the design of the high-hardness alloy plate can effectively solve this problem.

[0039] At the bottom layer, the elastic material plate 5.3 plays a buffering role. When assembled with the lower shell bracket, the elastic material plate can absorb part of the impact force and protect the battery PACK in the tray from damage. This design ensures that the tray 5 has good buffering performance while ensuring strength.

[0040] In summary, the three-layer plate design of the tray 5 has its own unique advantages. The hard metal plate 5.1 provides heat insulation and flame retardancy to protect the battery safety; the high-hardness alloy plate 5.2 improves the overall strength and rigidity of the tray to ensure the stability of the large tray during hoisting; the elastic material plate 5.3 increases the buffering effect to protect the battery PACK from impact. This structural design enables the tray 5 to perform well in various application scenarios.

[0041] In this embodiment, there are four lower shell brackets 1, which are respectively located at the bottom of the edges of the tray 5, and can effectively and evenly share the load. The number of lower shell brackets can be increased according to the weight of batteries of different models or specifications, so that the tray edge bears excessive pressure and causes bending, and the through hole 1.1 provided in the lower shell bracket corresponds to the tray fixing hole 5.4 and is fixed by threaded connection. The lower shell bracket is arranged around the tray to avoid direct contact with the bottom surface of the tray to reduce bumps when the battery PACK is placed alone. Secondly, when hoisting and installing, the lower shell bracket is used to fix with the frame chassis.

[0042] like Figure 4 As shown, it also includes an assembly screw 3 and an assembly nut 4, the assembly screw matches the assembly nut, the assembly screw passes through the through hole 1 2.3 of the lifting block and the tray fixing hole 5.4 and then passes through the through hole 2 1.1 of the lower shell bracket, so that the lifting block, the tray and the lower shell bracket are fixed together to form a whole, which helps to improve the stability and safety of the overall structure. The assembly nut is installed on the assembly screw at the bottom of the lower shell bracket.

[0043] like Figure 1 As shown, at least two lifting blocks 2 are arranged at each edge of the pallet 5. To avoid excessive load pressure on one side of the pallet due to lifting, and secondly, when there is only one lifting block on one side, the shear force on one side of the pallet will be too large, resulting in bending. Therefore, at least two lifting blocks should be arranged on one side of the pallet. The number of lifting blocks can be reasonably increased according to the different sizes of the pallet. In this embodiment, the pallet is rectangular, and 8 lifting blocks are evenly arranged on the pallet.

[0044] Next, let's talk about the design and installation of lifting blocks. The location and number of lifting blocks have been explained in the previous article. Next, we will introduce the structure and function of lifting blocks in detail.

[0045] First, the structural design of the lifting block should meet the requirements of stability and firmness. In this embodiment, the lifting block 2 adopts an arc design, so that it can better disperse the load pressure during the lifting process and reduce the shear force of a single lifting point on the pallet. In addition, the arc design can also increase the contact area between the lifting block and the lifting equipment, enhance the friction, and ensure the safety and stability of the lifting process.

[0046] Secondly, the material selection of the lifting block is also very important. In order to ensure the wear resistance and impact resistance of the lifting block, we choose to use high-strength engineering plastics or metal materials. In this embodiment, we choose a high-strength aluminum alloy material, which not only ensures the firmness of the lifting block, but also reduces the weight and avoids affecting the overall performance of the pallet.

[0047] In terms of the installation of the lifting block, we used bolt fixing to evenly fix the lifting block 2 on the edge of the pallet. In order to ensure the stability of the lifting block, we particularly emphasized the tightness of the bolts and required the bolt tightening force to reach a certain standard to ensure that the lifting block will not loosen during the lifting process.

[0048] In addition, in order to further improve the hoisting performance of the pallet, we have also added reinforcement ribs inside the pallet. These reinforcement ribs can increase the rigidity and bending resistance of the pallet, thereby better dispersing the load during the hoisting process and reducing the local pressure of the hoisting block on the pallet.

[0049] In summary, the pallet hoisting system in this embodiment has been fully considered in design and installation, so that the pallet has high stability and safety during the hoisting process. It can not only meet various logistics and transportation needs, but also reduce accident risks and improve work efficiency.

[0050] In actual applications, the size of the pallet, the number and position of the lifting blocks can also be adjusted according to different scenarios and needs. For example, in the transportation of heavy goods, the number of lifting blocks can be appropriately increased to improve the lifting stability; in places with limited space, the size of the pallet can be appropriately reduced to meet space requirements.

[0051] The installation process of this embodiment is as follows: the lifting block corresponds to the 8 fixing holes provided on the tray, and the tray is placed on four lower shell brackets, the through hole 2 provided on the lower shell bracket corresponds to the fixing hole, the assembly screw passes through the through hole 1 provided on the lifting block, passes through the fixing hole provided on the tray, and then passes through the through hole 2 provided on the lower shell bracket, and then the 8 assembly nuts are fixed to the assembly screw heads extending from the bottom of the lower shell bracket in sequence with the same torque using a torque wrench.

[0052] The beneficial effects of this embodiment are as follows: the utility model can realize the hoisting of the battery PACK without causing stress concentration and damage to the battery PACK structure, and the assembly process of the hoisting structure of the utility model is simple and smooth, and it is compatible with different hoisting tools. The hoisting structure has a large load and is suitable for different battery PACKs.

[0053] The above are only preferred embodiments of the present invention and do not constitute any limitation to the present invention. Any simple modification, change and equivalent transformation made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A battery PACK hoisting structure, characterized in that: include: The lifting block (2) is a block structure with a triangular cross section, and a lifting channel (2.2) penetrating the lifting block is provided at the waist of the lifting block, the top of the lifting channel is a fixing block (2.1) with a triangular cross section, and the bottom surface of the fixing block is a curved surface extending toward the lifting channel (2.2); The pallet (5) is a rectangular plate-shaped structure, and the pallet is a three-layer composite structure. Through fixing holes (5.4) are evenly distributed on the edge of the surface of the pallet, and the fixing holes cooperate with the lifting blocks.

2. A battery PACK hoisting structure according to claim 1, characterized in that: The lower part of the lifting channel (2.2) provided in the lifting block (2) is a plate-shaped fixing plate (2.4), and the fixing plates at both ends of the lifting channel (2.2) are provided with through holes (2.3), and the through holes (2.3) match the fixing holes (5.4).

3. A battery PACK hoisting structure according to claim 2, characterized in that: The lifting block is also provided with two side panels (2.5), which are parallel to the lifting channel (2.2) and connected to the two side surfaces of the lifting block (2) and are integrally formed, and the bottoms of the two side panels are connected to the two side surfaces of the fixing plate (2.4) and are integrally formed.

4. A battery PACK hoisting structure according to claim 1, characterized in that: The bottom of the tray (5) is also provided with a lower shell bracket (1) which is a rectangular frame structure, and the frame of the lower shell bracket is provided with a second through hole (1.1) matching the fixing hole (5.4), and the lower shell bracket is installed at the bottom of the tray.

5. A battery PACK hoisting structure according to claim 4, characterized in that: The tray (5) is formed by a composite of three layers of plate materials, wherein the surface is a hard metal plate (5.1), the middle layer is a high-hardness alloy plate (5.2), and the bottom layer is an elastic material plate (5.3).

6. A battery PACK hoisting structure according to claim 4, characterized in that: There are four lower shell brackets (1), which are respectively located at the bottom of the edges of the tray (5), and the second through hole (1.1) provided in the lower shell bracket corresponds to the tray fixing hole (5.4) and is fixed by threaded connection.

7. A battery PACK hoisting structure according to claim 2, characterized in that: It also includes an assembly screw (3) and an assembly nut (4), wherein the assembly screw matches the assembly nut and passes through the first through hole (2.3) and the fixing hole (5.4).

8. A battery PACK hoisting structure according to claim 7, characterized in that: The assembly screw (3) passes through the second through hole (1.1) of the lower shell bracket, so that the hanging block, the tray and the lower shell bracket are fixedly connected as one, and the assembly nut is installed on the assembly screw at the bottom of the lower shell bracket.

9. A battery PACK hoisting structure according to any one of claims 1 to 8, characterized in that: There are no less than two lifting blocks (2) arranged at each edge of the pallet (5).

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