Battery pack hanging structure

Abstract

A battery pack suspension structure, relating to the field of power battery transportation technology, is disclosed to solve the problem of battery pack damage during transportation caused by traditional lug-type suspension methods. The battery pack suspension structure, used for mounting on a battery pack, includes a suspension plate, hooks, and locking components. The suspension plate is flat, with at least two spaced-apart through holes on one side. The hooks are fixedly mounted on the suspension plate, extending outward from one side wall of the plate, with the hooks and through holes located on opposite sides of the plate, and are used to connect suspension ropes. At least two locking components are provided, each corresponding to one of the at least two through holes. A mounting structure is provided at the bottom of the side wall of the battery pack, including at least two locking holes located at the bottom of the side wall, each corresponding to one of the at least two through holes. The locking holes communicate with the through holes, and the locking components pass through the through holes and extend into the corresponding locking holes.

Description

Technical Field

[0001] This application relates to the field of power battery transportation technology, and in particular to a battery pack suspension structure. Background Technology

[0002] Currently, lithium-ion batteries are the most commonly used batteries in vehicles. As a rechargeable battery, lithium-ion batteries have advantages such as high energy density, high power density, high cycle life, and long storage time. A battery typically consists of a casing and individual battery cells, with the individual cells housed within the casing. A larger casing generally improves the battery's energy density, but an excessively large casing increases the difficulty of transporting lithium-ion batteries.

[0003] Traditional vertical hanging lugs are typically located at the bottom of the battery, with the lugs protruding along the sides, taking up a significant amount of side space in the battery pack. The hanging rope (suspension rope) is tied to the lugs and then connected to a hook above the center of the battery. During battery movement, the rope can easily rub against the battery's edges, damaging the battery pack. Utility Model Content

[0004] This application provides a battery pack suspension structure to solve the problem that traditional lug-type suspension transport of battery packs will damage the battery packs during transportation.

[0005] This application provides a battery pack hanging structure for installation on a battery pack, including a hanging plate, a hanging hook, and locking components. The hanging plate is flat, and at least two through holes are formed on one side of the hanging plate at intervals. The hanging hook is fixedly installed on the hanging plate and extends outward from one side wall of the hanging plate. The hanging hook and the through hole are located on opposite sides of the hanging plate, and the hanging hook is used to connect a hanging rope. At least two locking components are provided, and each of the at least two locking components corresponds to one of the at least two through holes. The bottom of the side wall of the battery pack is provided with an installation structure, which includes at least two locking holes located at the bottom of the side wall of the battery pack. Each of the at least two locking holes corresponds to one of the at least two through holes, and the locking holes communicate with the corresponding through holes. The locking components pass through the through holes and extend into the corresponding locking holes.

[0006] The hanging structure in this application is attached to the battery pack by a hanging plate and fixedly connected by a locking device. The locking device is connected to the bottom of the hanging plate and the battery pack, and the hook is located at the top of the hanging plate. In this way, the hanging rope can be connected to the hook located at the top of the battery pack to avoid the hanging rope rubbing against the top edge of the battery pack during movement after it is connected.

[0007] Meanwhile, the lower the center of gravity of the heavy object, the more stable the battery pack will be, according to the principle of center of gravity. The higher the connection point, the larger the swing radius will be. According to the principle of a simple pendulum, when the swing angle is small, the swing period is proportional to the square root of the pendulum length. The increase in the swing radius means that the swing period is longer. The battery pack swings at a relatively slower speed and the swing amplitude is relatively smaller, which is conducive to maintaining the stability of the battery pack during suspension and transportation.

[0008] Traditional vertical lug-type hanging devices occupy a large amount of external space at the bottom of the battery pack, which restricts the installation of the battery pack and significantly reduces the energy density of the battery. The battery pack hanging structure in this solution only occupies the thickness of the plate and locking parts in the bottom area of ​​the side wall of the battery pack, which greatly reduces the waste of this part of the space, improves the space utilization rate, and can effectively improve the volumetric energy density.

[0009] In some embodiments of this application, the hook is located above the battery pack. This design further prevents friction between the hanging rope and the battery pack.

[0010] In some embodiments of this application, the hook extends outward along a direction perpendicular to the surface of the hanging plate. The vertical arrangement of the hook prevents the hanging rope from slipping off the hook due to tangential force.

[0011] In some embodiments of this application, three through holes, three locking elements, and three locking holes are provided. The three through holes and three locking elements can enhance the positioning effect and connection strength between the hanging plate and the battery pack.

[0012] In some embodiments of this application, the three locking elements include one threaded element and two pins, and the three locking holes include two pin holes and one threaded hole. The two pins are respectively inserted into the two pin holes, and the threaded element is threadedly connected to the threaded hole. The pins can provide positioning and tangential support, and the threaded element can provide a fixed connection, thereby fixing the hanging plate and the battery pack relatively, making the battery pack more stable during transportation.

[0013] In some embodiments of this application, a hanging plate, a hanging hook, and at least two locking members constitute a set of battery pack hanging structures, and multiple sets of battery pack hanging structures are provided; the battery pack has two opposite side walls, and multiple sets of mounting structures are provided, with the multiple sets of mounting structures located on the two opposite side walls of the battery pack respectively; the multiple sets of battery pack hanging structures correspond one-to-one with the multiple sets of mounting structures, and the battery pack hanging structures are fixedly connected to the corresponding mounting structures.

[0014] Multiple hanging plates can be fitted with multiple hooks, allowing multiple hanging ropes to connect to multiple points on the battery pack, making the battery pack more stable during transportation.

[0015] In some embodiments of this application, the battery pack suspension structure is configured as four sets, which are evenly distributed on two opposite side walls of the battery pack. Two sets of battery pack suspension structures on each side can provide a stable connection during battery pack transportation.

[0016] In some embodiments of this application, the spacing between the two sets of battery pack suspension structures on the two side walls of the battery pack is equal. This structure ensures that the tension of the suspension ropes on both sides of the battery pack is similar, which helps to keep the battery pack stable during transportation.

[0017] In some embodiments of this application, the hook includes a fixed post and a hook buckle. The fixed post is fixedly connected to the hanging plate, and the hook buckle is disposed on the fixed post. The fixed post and hook buckle facilitate connection to the fixed post and also facilitate the installation of the hanging rope. Attached Figure Description

[0018] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solution of this utility model and do not constitute a limitation on the technical solution of this utility model.

[0019] Figure 1 This is a schematic diagram of a conventional vertical lug-type suspension device provided in an embodiment of this application.

[0020] Figure 2 This is a schematic diagram of a battery pack suspension structure provided in an embodiment of this application.

[0021] Figure 3 This is a side view of a battery pack suspension structure provided in an embodiment of this application.

[0022] Figure 4 This is a cross-sectional view of the locking hole in a schematic diagram of a battery pack hanging structure provided in an embodiment of this application.

[0023] Figure 5 This is a top view of a battery pack suspension structure provided in an embodiment of this application.

[0024] Figure 6 This is a plan view of the side of the battery pack in a schematic diagram of a battery pack suspension structure provided in an embodiment of this application.

[0025] Reference numerals: 1-Battery pack; 11-Locking hole; 111-Threaded hole; 112-Pin hole; 2-Lifting lug; 3-Hanging rope; 4-Hanging plate; 41-Through hole; 5-Hanging hook; 51-Fixing post; 52-Hook buckle; 6-Locking component; 61-Threaded component; 62-Pin component. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0028] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, when describing pipelines, the terms "connected" and "linked" as used in this application have the meaning of establishing electrical connection. The specific meaning needs to be understood in conjunction with the context.

[0030] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0031] Currently, lithium-ion batteries are the most commonly used batteries in vehicles. As a rechargeable battery, lithium-ion batteries have advantages such as high energy density, high power density, high cycle life, and long storage time. A battery typically consists of a casing and individual battery cells, with the individual cells housed within the casing. A larger casing generally improves the battery's energy density, but an excessively large casing increases the difficulty of transporting lithium-ion batteries.

[0032] Please refer to Figure 1Traditional vertical lifting lug 2 type hanging devices are mostly located at the bottom of the battery, and the lifting lug 2 protrudes along the side, which occupies a lot of the side volume of the battery pack 1. After the hanging rope 3 is tied to the lifting lug 2, it is connected to the hook above the center of the battery. During the movement of the battery, the rope is prone to friction with the edge of the battery, which can damage the battery pack 1.

[0033] Therefore, please refer to Figure 2 This application provides a new battery pack hanging structure for installation on a battery pack 1. The battery pack hanging structure includes a hanging plate 4, a hanging hook 5, and a locking element 6.

[0034] Please refer to Figure 2 The hanging plate 4 is flat. The hanging plate 4 needs to be attached to the side wall of the battery pack 1, and the hanging plate 4 needs to be strong enough to withstand a certain amount of tension. Therefore, the hanging plate 4 needs to have a certain strength. Its material can be steel or other metal materials, such as aluminum alloy. The shape of the hanging plate 4 can be flat. Specifically, its cross-section can be square, or it can have protrusions or depressions.

[0035] Please refer to Figure 3 The hanging plate 4 needs to be attached to the wall of the battery pack 1. In order to avoid the hanging plate 4 damaging the surface of the battery pack 1, the surface and edges of the hanging plate 4 can be treated.

[0036] Please refer to Figure 2 The hanging plate 4 has at least two through holes 41 spaced apart on one side. The through holes 41 can be circular or countersunk, and the different through holes 41 can be the same size or different sizes.

[0037] Please refer to Figure 2 The hook 5 is fixedly installed on the hanging plate 4. The hook 5 extends outward from one side wall of the hanging plate 4. The hook 5 and the through hole 41 are located on opposite sides of the hanging plate 4. The hook 5 is used to connect the hanging rope 3. The hook 5 needs to be fixedly connected to the hanging plate 4 and has a certain strength to prevent the hook 5 from cracking or falling off during transportation.

[0038] Please refer to Figure 2 The hook 5 can be made of high-strength alloy material, and it can be circular or other shapes. The hook 5 and the hanging plate 4 can be integrally formed, welded or threaded.

[0039] Please refer to Figure 2 There are at least two locking elements 6, and each of the at least two locking elements 6 corresponds one-to-one with at least two through holes 41. The locking elements 6 can be configured as needed, for example, they can be pins, bolts, or rivets. Different locking elements 6 can be the same or different.

[0040] Please refer to Figure 4 The bottom of the side wall of the battery pack 1 is provided with an installation structure. The installation structure includes at least two locking holes 11 located at the bottom of the side wall of the battery pack 1. The at least two locking holes 11 correspond one-to-one with at least two through holes 41. The locking holes 11 are connected to the corresponding through holes 41. The locking member 6 passes through the through hole 41 and extends into the corresponding locking hole 11.

[0041] Please refer to Figure 4 The battery pack 1 has a housing. The locking hole 11 here needs to be set on the housing of the battery pack 1 to avoid affecting the internal battery. The size of the two locking holes 11 should be set to correspond to the corresponding through hole 41 and locking member 6 so that the locking member 6 can extend into the through hole 41 and locking hole 11 and can fix the hanging plate 4 and battery pack 1.

[0042] Please refer to Figure 2 In this application, the hanging structure is attached to the battery pack 1 by the hanging plate 4 and fixedly connected by the locking member 6. The locking member 6 is connected to the bottom of the hanging plate 4 and the battery pack 1, and the hook 5 is located at the top of the hanging plate 4. In this way, the hanging rope 3 can be connected to the hook 5 located at the top of the battery pack 1 to avoid the hanging rope 3 rubbing against the top edge of the battery pack 1 during the movement after it is connected.

[0043] Please refer to Figure 2 Meanwhile, the lower the center of gravity of the heavy object, the more stable the battery pack 1 will be, according to the principle of center of gravity. The higher the connection point, the larger the swing radius will be. According to the principle of simple pendulum, when the swing angle is small, the swing period is proportional to the square root of the pendulum length. The increase in swing radius means that the swing period is longer. The battery pack 1 swings at a relatively slow speed and the swing amplitude is relatively small, which is conducive to maintaining the stability of the battery pack 1 during suspension and transportation.

[0044] Please refer to Figure 3 Traditional vertical lug type 2 hanging devices occupy a lot of external space at the bottom of battery pack 1, which restricts the installation of battery pack 1 and greatly reduces battery density. The battery pack hanging structure in this solution only occupies the thickness of the plate and locking part 6 in the bottom area of ​​the side wall of battery pack 1, which greatly reduces the waste of this part of the space, improves the space utilization rate, and can effectively increase the battery density per unit space.

[0045] Please refer to Figure 2 In some examples, the hook 5 is positioned above the battery pack 1. This design further prevents the hanging rope 3 from rubbing against the battery pack 1.

[0046] Please refer to Figure 3In some examples, the hanging plate 4 may protrude partially and extend to the upper side of the battery pack 1, or it may be flush with the upper edge of the battery pack 1; the hanging hook 5 may be located on the upper side of the battery pack 1, or it may be flush with the upper edge of the battery pack 1.

[0047] In some examples, the hook 5 can be a rotatable structure, such as being able to rotate on the hanging plate 4, to make the hanging operation more flexible.

[0048] Please refer to Figure 3 In some examples, the hook 5 extends outward along a direction perpendicular to the surface of the hanging plate 4. The vertical arrangement of the hook 5 can prevent the hanging rope 3 from slipping off the hook 5 due to tangential force.

[0049] In some examples, the portion of the hook 5 extending in a direction perpendicular to the hanging plate 4 should be the portion connected to the hanging plate 4.

[0050] To ensure a stable connection between the suspending rope 3 and the hook 5, the hook 5 should not be a column to prevent the suspending rope 3 from slipping.

[0051] Please refer to Figure 4 In some examples, there are three through holes 41, three locking elements 6, and three locking holes 11. The three through holes 41 and the three locking elements 6 can enhance the positioning effect and connection strength between the hanging plate 4 and the battery pack 1.

[0052] In some examples, the three through holes 41 may be the same size or different sizes. The number of through holes 41 may also be four, five, or other numbers.

[0053] Please refer to Figure 4 In some examples, the three locking elements 6 include a threaded element 61 and two pins 62, and the three locking holes 11 include two pin holes 112 and a threaded hole 111. The two pins 62 are respectively inserted into the two pin holes 112, and the threaded element 61 is threadedly connected to the threaded hole 111. The pins 62 can provide positioning and tangential support, and the threaded element 61 can provide a fixed connection, thereby fixing the hanging plate 4 and the battery pack 1 relatively, making the battery pack 1 more stable during transportation.

[0054] Please refer to Figure 4 For example, the diameter of the threaded part 61 can be larger than the diameter of the pin part 62, in which case the threaded part 61 can be located between the two pin parts 62. The two pin parts 62 can be located at the same height, and the threaded part 61 and the pin part 62 can also be located at the same height. The pin hole 112 and the locking hole 11 should be respectively provided with corresponding pin parts 62 and threaded parts 61 to facilitate the installation of pin parts 62 and threaded parts 61.

[0055] The pin 62 can be a pin shaft, and the threaded part 61 can be a bolt or a stud.

[0056] Alternatively, the diameter of the threaded part 61 can be the same as the diameter of the pin part 62.

[0057] Alternatively, the pin 62 can also be a threaded post or a bolt. In this case, the size of the pin 62 can be smaller than that of the threaded part 61, or it can be the same as that of the threaded part 61.

[0058] Please refer to Figure 5 In some examples, a hanging plate 4, a hanging hook 5, and at least two locking elements 6 constitute a set of battery pack hanging structures, and the battery pack hanging structures are set in multiple sets; the battery pack 1 has two opposite side walls, and the mounting structures are set in multiple sets, with the multiple sets of mounting structures located on the two opposite side walls of the battery pack 1 respectively; the multiple sets of battery pack hanging structures correspond one-to-one with the multiple sets of mounting structures, and the battery pack hanging structures are fixedly connected to the corresponding mounting structures.

[0059] Multiple hanging plates 4 can be equipped with multiple hanging hooks 5, so that multiple hanging ropes 3 can be connected to multiple points on the battery pack 1, making the battery pack 1 more stable during transportation.

[0060] Please refer to Figure 5 In some examples, the battery pack suspension structure is configured with four sets, which are evenly distributed on two opposite side walls of the battery pack 1. Two sets of battery pack suspension structures on each side can provide a stable connection during the transportation of the battery pack 1.

[0061] In some other examples, the battery pack suspension structure is configured as six groups, which are evenly distributed on two opposite side walls of the battery pack 1.

[0062] To improve the transport stability of battery pack 1, the battery pack hanging structure should be installed on the longer side wall of battery pack 1.

[0063] Please refer to Figure 6 In some examples, the spacing between the two sets of battery pack suspension structures on each side wall of the battery pack 1 is equal. This structure ensures that the tension of the suspension ropes 3 on both sides of the battery pack 1 is similar, which helps to keep the battery pack 1 stable during transportation.

[0064] In some examples, the spacing between two adjacent battery packs 1 can also be equal.

[0065] In some examples, the two sets of battery pack suspension structures on each sidewall can be symmetrically arranged along the middle of battery pack 1.

[0066] Please return to the reference. Figure 3In some examples, the hook 5 includes a fixing post 51 and a hook buckle 52. The fixing post 51 is fixedly connected to the hanging plate 4, and the hook buckle 52 is disposed on the fixing post 51. The fixing post 51 and the hook buckle 52 facilitate connection to the fixing post 51 and also facilitate the installation of the hanging rope 3.

[0067] In some examples, the fixing post 51 can be fixedly mounted on the hanging plate 4, for example by welding; the fixing post 51 may have a hole in the horizontal direction, and the hook buckle 52 can be a ring or other rotating ring body, which can pass through the hole and rotate on the fixing post 51.

[0068] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0069] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A battery pack hanger structure for mounting on a battery pack, characterized by, include: The hanging plate is flat, and at least two through holes are formed on one side of the hanging plate at intervals; A hook is fixedly installed on the hanging plate. The hook extends outward from one side wall of the hanging plate. The hook and the through hole are located on opposite sides of the hanging plate. The hook is used to connect the hanging rope. The locking element is provided in at least two, and the at least two locking elements correspond one-to-one with the at least two through holes; The battery pack has a mounting structure at the bottom of its sidewall. The mounting structure includes at least two locking holes at the bottom of the sidewall of the battery pack. The at least two locking holes correspond one-to-one with at least two through holes. The locking holes are connected to the corresponding through holes. The locking member passes through the through hole and extends into the corresponding locking hole.

2. The battery pack suspension structure according to claim 1, characterized in that, The hook is located above the battery pack.

3. The battery pack suspension structure according to claim 2, characterized in that, The hook extends outward along a direction perpendicular to the surface of the hanging plate.

4. The battery pack suspension structure according to claim 1, characterized in that, The number of through holes is set to three, the number of locking elements is set to three, and the number of locking holes is set to three.

5. The battery pack suspension structure according to claim 4, characterized in that, The three locking components include one threaded component and two pin components, and the three locking holes include two pin holes and one threaded hole. The two pin components are respectively inserted into the two pin holes, and the threaded component is threadedly connected to the threaded hole.

6. The battery pack suspension structure according to any one of claims 1 to 5, characterized in that, A set of the battery pack suspension structure consists of one hanging plate, one hanging hook, and at least two locking members; the battery pack suspension structure is configured in multiple sets. The battery pack has two opposing sidewalls, and the mounting structure is configured in multiple sets, with each set of mounting structures located on one of the two opposing sidewalls of the battery pack. Each of the multiple sets of battery pack hanging structures corresponds one-to-one with the multiple sets of mounting structures, and the battery pack hanging structure is fixedly connected to the corresponding mounting structure.

7. The battery pack suspension structure according to claim 6, characterized in that, The battery pack suspension structure is configured in four groups, which are evenly distributed on two opposite side walls of the battery pack.

8. The battery pack suspension structure according to claim 7, characterized in that, The spacing between the two sets of battery pack suspension structures on the two side walls of the battery pack is equal.

9. The battery pack suspension structure according to claim 1, characterized in that, The hook includes a fixed post and a hook buckle. The fixed post is fixedly connected to the hanging plate, and the hook buckle is disposed on the fixed post.

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