CN217765434U

CN217765434U - Fixing device for battery pack

Info

Publication number: CN217765434U
Application number: CN202220961708.3U
Authority: CN
Inventors: 杨超; 肖辉辉; 聂磊
Original assignee: Zhejiang Zero Run Technology Co Ltd
Current assignee: Zhejiang Zero Run Technology Co Ltd
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2022-11-08
Anticipated expiration: 2032-04-22

Abstract

The application relates to a fixing device for a battery pack, which comprises a plurality of movable frame components and a fixed seat component movably connected with the movable frame components. The fixing seat assembly is used for bearing the movable frame assemblies and the battery packs, each movable frame assembly is provided with an installation position, each installation position is correspondingly provided with an installation connecting piece, and the battery packs are connected to the movable frame assemblies through the installation connecting pieces arranged on the installation positions. The plurality of movable frame assemblies can be movably matched with the fixed seat assembly along two directions of a first axial direction A respectively, each mounting connecting piece can be movably matched with the mounting position along two directions of a second axial direction B, and the first axial direction A and the second axial direction B are not coincident and are not parallel. The application provides a fixing device for battery package has solved the problem that the frock of current vibration test is difficult to satisfy the vibration test of the battery package of equidimension and structure simultaneously.

Description

Fixing device for battery pack

Technical Field

The application relates to the technical field of hoisting machinery, in particular to a fixing device for a battery pack.

Background

With the development of new energy industry and the popularization of new energy automobiles, the safety problem of the new energy automobiles is more and more emphasized. The power of new energy automobile brings and derives from power battery, also is the battery package, and in order to promote new energy automobile's security, the battery package has very strict test flow before being applied to new energy automobile. Wherein, the vibration test is to simulate: under the driving state, various jolts and jolts are received to the battery pack on the new energy automobile. Currently, the mainstream vibration test scheme is: the battery pack is fixed on the vibration table through the tool, and then the vibration table is started in a random vibration mode, a fixed-frequency vibration mode or a variable-frequency vibration mode to drive the tool and the battery pack to vibrate synchronously, and whether the battery pack is abnormal or not is observed in the whole test process.

However, the size and the structure of the battery pack of different new energy vehicles are all different, and the interval that is used for installing fixed assembly structure on every battery pack is different, and consequently, every battery pack all needs to design one set of frock alone to satisfy the demand of fixed battery pack when vibration testing. So, improved battery package vibration test's the degree of difficulty, increased battery package's vibration test's cost to, when changing different battery packages and carrying out vibration test, need all demolish original frock, install new frock again, greatly reduced vibration test's efficiency.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a fixing device for a battery pack, which solves the problem that the existing vibration testing tool is difficult to simultaneously satisfy the vibration tests of battery packs with different sizes and structures.

The fixing device for the battery pack comprises a plurality of movable frame assemblies and a fixed seat assembly movably connected with the movable frame assemblies. The fixing seat assembly is used for bearing the movable frame assemblies and the battery packs, each movable frame assembly is provided with an installation position, each installation position is correspondingly provided with an installation connecting piece, and the battery packs are connected to the movable frame assemblies through the installation connecting pieces arranged at the installation positions. The movable frame assemblies can be movably matched with the fixed seat assemblies respectively along two directions of a first axial direction A, each mounting connecting piece can be movably matched with the mounting position along two directions of a second axial direction B, and the first axial direction A and the second axial direction B are not coincident and are not parallel.

In one embodiment, the first axis A and the second axis B are arranged perpendicularly. It will be appreciated that this arrangement is advantageous to improve the efficiency of movement of the mounting connection.

In one embodiment, the movable frame assembly is provided with a plurality of first sliding grooves which extend along the first axial direction a and are arranged in parallel, the fixed seat assembly is provided with a plurality of first convex ribs which are matched with the first sliding grooves, and the first convex ribs can slide along the first axial direction a in the first sliding grooves. It can be appreciated that the arrangement is beneficial to reducing the difficulty in matching the movable frame component and the fixed seat component.

In one embodiment, the movable frame assembly is provided with a plurality of first fixing holes distributed along the first axial direction a, the fixed seat assembly is provided with a plurality of second fixing holes distributed along the first axial direction a, and the fixing device further comprises a first fastening piece which sequentially penetrates through the first fixing holes and the second fixing holes so as to fixedly connect the movable frame assembly and the fixed seat assembly. It will be appreciated that this arrangement facilitates the securing of the carriage assembly and the mounting assembly at different positions in the first axial direction a.

In one embodiment, the first fixing hole is elongated along the first axis a, and/or the second fixing hole is elongated along the first axis a. It can be understood that the arrangement is beneficial to improving the matching precision of the first fixing hole and the second fixing hole.

In one embodiment, the mounting portion is in the form of an elongated hole extending along the second axial direction B, and the fixing device further includes a second fastening member, which sequentially penetrates through the mounting portion and the mounting structure on the battery pack to fixedly connect the movable frame assembly and the battery pack. It will be appreciated that such an arrangement is advantageous to facilitate the securing of the battery pack to the cradle assembly at various locations along the first axis a.

In one embodiment, the number of the mounting positions is multiple, and the multiple mounting positions are distributed at intervals along the second axial direction B. It will be appreciated that such an arrangement is advantageous in improving the structural strength of the head assembly.

In one embodiment, the fixing device includes two oppositely disposed movable frame assemblies, the two movable frame assemblies are distributed at two ends of the fixed seat assembly along the first axial direction a, the fixing device further includes two oppositely disposed fixed seat assemblies, the two fixed seat assemblies are distributed at two ends of the movable frame assembly along the second axial direction B, and the two fixed seat assemblies are spaced apart from each other, so that the battery pack can be disposed between the two fixed seat assemblies.

In one embodiment, the fixing seat assembly comprises a bottom plate, a fixing plate and a plurality of bottom support rods for connecting the bottom plate and the fixing plate, the fixing seat assembly is fixed on a horizontal plane through the bottom plate, and the bottom plate supports the fixing plate through the plurality of bottom support rods; the movable frame assembly comprises a first movable plate, a second movable plate and a first connecting rod for connecting the first movable plate and the second movable plate, the first movable plate and the second movable plate are respectively movably connected with fixing plates arranged at two ends of the movable frame assembly, and the mounting positions are arranged on the first connecting rod.

In one embodiment, the movable frame assembly further comprises a second connecting rod and a plurality of upper supporting rods for connecting the first connecting rod and the second connecting rod, wherein the second connecting rod is arranged in parallel with the first connecting rod, and the upper supporting rods are respectively perpendicular to the first connecting rod and the second connecting rod. It will be appreciated that such an arrangement is advantageous in improving the structural strength of the head assembly.

In one embodiment, the second connecting rod is provided with an operation hole corresponding to the installation position, and an external tool can extend into the installation position through the operation hole. It can be understood that, so set up, be favorable to making things convenient for the installation connecting piece that external instrument dismouting located the head rod.

Compared with the prior art, the fixing device for battery package that this application provided, usually, one side of battery package has the fixed assembly structure of multiposition, and the assembly structure that installation connecting piece and battery package in this application go up corresponds the setting, and assembly structure passes through the installation connecting piece and installs in the installation position. It can be understood that the intervals between different assembling structures of different battery packs are different, and therefore, the existing tool is difficult to adapt to the installation and fixation of different battery packs. When the relative position of the assembly structure on the battery pack is changed due to replacement of the battery pack, the distance between the plurality of movable frame assemblies is adjusted along the first axial direction A, so that the distance between the mounting positions on the different movable frame assemblies in the first axial direction A is equal to the distance between the assembly structure on the battery pack in the first axial direction A, and further, the distance between the mounting connecting members in the different mounting positions in the second axial direction B is equal to the distance between the assembly structure on the battery pack in the second axial direction B by adjusting the distance between the mounting connecting members in the second axial direction B. Because the first axial direction a and the second axial direction B are different, the first axial direction a and the second axial direction B can form a two-dimensional plane. Furthermore, it is known that the plurality of mounting connectors can be moved to positions corresponding to the plurality of mounting structures on the battery pack on a two-dimensional plane, thereby adapting to mounting and fixing of battery packs of different sizes or structures.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a fixing device according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural view of a movable frame assembly according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a fixing base assembly according to an embodiment of the present disclosure.

Reference numerals: 100. a movable frame assembly; 110. a first movable plate; 111. a first chute; 112. a first fixing hole; 120. a second movable plate; 130. a first connecting rod; 131. mounting positions; 140. a second connecting rod; 141. an operation hole; 150. an upper support bar; 160. a first reinforcement bar; 170. a second reinforcement bar; 200. a fixed seat assembly; 210. a base plate; 220. a bottom support bar; 230. a fixing plate; 231. a first rib; 232. and a second fixing hole.

Detailed Description

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral parts thereof; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediary. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

However, the size and the structure of different new energy automobile's battery package are all inequality to, the interval that is used for the fixed assembly structure of installation is different on every battery package, consequently, every battery package all need design one set of frock alone to satisfy the demand of fixed battery package when vibration test. So, improved battery package vibration test's the degree of difficulty, increased battery package's vibration test's cost to, when changing different battery packages and carrying out vibration test, need all demolish original frock, install new frock again, greatly reduced vibration test's efficiency.

As shown in fig. 1 to 3, the problem that the existing vibration testing tool is difficult to simultaneously satisfy the vibration testing of battery packs with different sizes and structures is solved. The application provides a fixing device for a battery pack, which comprises a plurality of movable frame assemblies 100 and a fixed seat assembly 200 movably connected with the movable frame assemblies 100. The fixed seat assembly 200 is used for bearing the movable frame assemblies 100 and battery packs, each movable frame assembly 100 is provided with a mounting position 131, each mounting position 131 is correspondingly provided with a mounting connecting piece (not shown), and the battery packs are connected to the movable frame assemblies 100 through the mounting connecting pieces arranged on the mounting positions 131. The plurality of movable frame assemblies 100 can be movably engaged with the fixed base assembly 200 along two directions of a first axial direction a, and each mounting connector can be movably engaged with the mounting site 131 along two directions of a second axial direction B, wherein the first axial direction a and the second axial direction B are not coincident and parallel.

It should be noted that the plurality of movable frame assemblies 100 may be separately arranged, or may be connected together and telescopically arranged by using a telescopic member, that is, besides the movable frame assemblies 100 separately arranged, the movable frame assemblies 100 that are telescopically connected may also be defined as the plurality of movable frame assemblies 100.

Further, it should be noted that the first axial direction a and the second axial direction B in the present application each have two directions. Specifically, the two directions of the first axis a refer to: the plurality of movable frame assemblies 100 are movable in a direction relative to the stationary frame assembly 200, and the plurality of movable frame assemblies 100 are also movable in a direction opposite to the direction relative to the stationary frame assembly 200. Likewise, the two directions of the second axial direction B refer to: the plurality of attachment connectors are movable in one direction relative to the attachment locations 131, and the plurality of attachment connectors are also movable in the opposite direction relative to the attachment locations 131.

Generally, one side of the battery pack has a multi-position fixing assembly structure, the mounting connector in this application is arranged corresponding to the assembly structure on the battery pack, and the assembly structure is mounted at the mounting position 131 through the mounting connector. It can be understood that the intervals between different assembling structures of different battery packs are different, and therefore, the existing tool is difficult to adapt to the installation and fixation of different battery packs. When the relative position of the assembly structure on the battery pack is changed due to replacement of the battery pack, the distance between the plurality of movable frame assemblies 100 is adjusted along the first axial direction a, so that the distance between the mounting positions 131 on different movable frame assemblies 100 in the first axial direction a is equal to the distance between the assembly structure on the battery pack in the first axial direction a, and further, the distance between the mounting connecting pieces in the different mounting positions 131 in the second axial direction B is equal to the distance between the assembly structure on the battery pack in the second axial direction B by adjusting the distances between the plurality of mounting connecting pieces along the second axial direction B. Since the first axis a and the second axis B are not coincident and are not parallel, the first axis a and the second axis B can constitute a two-dimensional plane. Furthermore, the mounting connectors can be moved to positions corresponding to the mounting structures on the battery pack on the two-dimensional plane, so that the mounting connectors can be adapted to mounting and fixing of battery packs with different sizes or structures.

According to the fixing device, the difficulty of vibration testing of the battery pack is effectively reduced, the cost of vibration testing of the battery pack is reduced, more importantly, when different battery packs are replaced for vibration testing, original tools do not need to be removed completely, and then the efficiency of vibration testing is greatly improved.

In order to improve the moving efficiency of the mounting link, in one embodiment, as shown in fig. 1, the first axial direction a and the second axial direction B are vertically disposed. So set up, be favorable to erection joint spare quick travel to the specific position on two-dimensional plane, and then improved efficiency of software testing. Without being limited thereto, the angle between the first axis a and the second axis B may also be any value between 0 ° and 90 °, excluding 0 ° and 90 °.

In order to reduce the difficulty of matching the movable frame assembly 100 and the fixed seat assembly 200, in an embodiment, as shown in fig. 1 to 3, the movable frame assembly 100 is provided with a plurality of first sliding grooves 111 extending along the first axial direction a and arranged in parallel, the fixed seat assembly 200 is provided with a plurality of first ribs 231 adapted to the first sliding grooves 111, and the first ribs 231 can slide in the first sliding grooves 111 along the first axial direction a. Through the movable fit of the first convex rib 231 and the first sliding groove 111, the movable fit of the plurality of movable frame assemblies 100 and the fixed seat assemblies 200 along the first axial direction a is realized, and the difficulty in the fit of the movable frame assemblies 100 and the fixed seat assemblies 200 is greatly reduced. Specifically, the number of the first sliding grooves 111 is 3, and the number of the first ribs 231 is also 3, but not limited thereto, the number of the first sliding grooves 111 and the number of the first ribs 231 may also be 2, 4, 5 or more, which is not listed herein.

Similarly, in other embodiments, it is also possible that the fixed seat assembly 200 is provided with a plurality of second sliding grooves (not shown) extending along the first axial direction a and arranged in parallel, and the movable frame assembly 100 is provided with a plurality of second ribs (not shown) adapted to the second sliding grooves, and the second ribs can slide in the second sliding grooves along the first axial direction a. Specifically, the number of the second sliding grooves and the number of the second ribs may be 2, 3, 4, 5 or more, which is not listed here.

In order to fix the movable frame assembly 100 and the fixed-base assembly 200 at different positions in the first axial direction a, in an embodiment, as shown in fig. 1 to 3, the movable frame assembly 100 is provided with a plurality of first fixing holes 112 distributed along the first axial direction a, the fixed-base assembly 200 is provided with a plurality of second fixing holes 232 distributed along the first axial direction a, and the fixing device further includes a first fastening member (not shown) sequentially passing through the first fixing holes 112 and the second fixing holes 232 to fixedly connect the movable frame assembly 100 and the fixed-base assembly 200. Preferably, the first fixing holes 112 are evenly spaced along the first axial direction a, and the second fixing holes 232 are evenly spaced along the first axial direction a.

It should be noted that, the first fixing holes 112 and the second fixing holes 232 are not in a one-to-one correspondence relationship, and any first fixing hole 112 and any second fixing hole 232 can pass through the same first fastening member, so that when the movable frame assembly 100 moves to any preset position of the first axial direction a relative to the fixed seat assembly 200, the first fixing hole 112 and the second fixing hole 232 corresponding to the position can be passed through by the first fastening member, thereby realizing that the movable frame assembly 100 is fixed at any preset position of the fixed seat assembly 200.

Further, it should be noted that the first fastening element sequentially passes through the first fixing hole 112 and the second fixing hole 232 includes two cases, in the first case, the first fastening element passes through the first fixing hole 112 first and then passes through the second fixing hole 232, and in the second case, the first fastening element passes through the second fixing hole 232 first and then passes through the first fixing hole 112.

Further, it should be noted that the first fastening member may be a screw, a bolt or other fastening connection, which is not listed here.

In order to improve the matching accuracy of the first fixing hole 112 and the second fixing hole 232, in an embodiment, as shown in fig. 1 to 3, the first fixing hole 112 has a long bar shape extending along the first axial direction a. As such, the second fixing hole 232 may be fixedly disposed at any position of the first fixing hole 112 along the first axial direction a by the first fastener. Similarly, in one embodiment, the second fixing hole 232 has an elongated shape extending along the first axis a. As such, the first fixing hole 112 may be fixedly disposed at any position of the second fixing hole 232 along the first axial direction a by the first fastener.

In order to improve the connection strength between the movable frame assembly 100 and the fixed base assembly 200, in an embodiment, as shown in fig. 1 to 3, the movable frame assembly 100 is provided with a plurality of rows of first fixing holes 112 extending along the first axial direction a, and in order to avoid the reduction of the structural strength of the movable frame assembly 100 caused by the position coincidence of the first sliding grooves 111 and the first fixing holes 112, each row of the first fixing holes 112 is arranged to be staggered with the first sliding grooves 111, that is, a row of the first fixing holes 112 is arranged between adjacent first sliding grooves 111, that is, a row of the first sliding grooves 111 is arranged between adjacent first fixing holes 112. Preferably, the intervals between the first fixing holes 112 of each row are the same, and the intervals between the first sliding grooves 111 are the same.

Correspondingly, in order to improve the connection strength between the movable frame assembly 100 and the fixed base assembly 200, in an embodiment, as shown in fig. 1 to 3, the fixed base assembly 200 is provided with a plurality of rows of second fixing holes 232 extending along the first axial direction a, and, in order to avoid the reduction of the structural strength of the movable frame assembly 100 caused by the overlapping of the first ribs 231 and the second fixing holes 232, each row of the second fixing holes 232 is staggered with the first ribs 231, that is, a row of the second fixing holes 232 is provided between adjacent first ribs 231, that is, a row of the first ribs 231 is provided between adjacent second fixing holes 232. Preferably, the intervals between the second fixing holes 232 in each row are the same, and the intervals between the first ribs 231 in each row are the same.

In order to facilitate the fixing of the battery pack at different positions of the movable frame assembly 100 along the first axial direction a, in an embodiment, as shown in fig. 1 to 3, the mounting position 131 is in the shape of an elongated hole extending along the second axial direction B, and the fixing device further includes a second fastening member, which sequentially passes through the mounting position 131 and the mounting structure on the battery pack to fixedly connect the movable frame assembly 100 and the battery pack.

It should be noted that the second fastening member sequentially passes through the mounting position 131 and the assembly structure on the battery pack includes two cases, in the first case, the second fastening member passes through the mounting position 131 first and then passes through the assembly structure on the battery pack, and in the second case, the second fastening member passes through the assembly structure on the battery pack first and then passes through the mounting position 131.

Further, it should be noted that the second fastening member may be a screw, a bolt or other fastening connection, which is not listed here.

Further, in order to improve the structural strength of the movable frame assembly 100, in an embodiment, as shown in fig. 1 to 3, the number of the mounting positions 131 is multiple, and the multiple mounting positions 131 are spaced along the second axial direction B. Further, the plurality of mounting locations 131 provided on the same movable frame assembly 100 are evenly spaced.

Specifically, the fixing device includes two opposite movable frame assemblies 100, and the two movable frame assemblies 100 are distributed at two ends of the fixed base assembly 200 along the first axial direction a, and the fixing device includes two opposite fixed base assemblies 200, and the two fixed base assemblies 200 are distributed at two ends of the movable frame assembly 100 along the second axial direction B, and the two fixed base assemblies 200 are spaced apart from each other, so that the battery pack can be disposed between the two fixed base assemblies 200. More specifically, two fixed base assemblies 200 are arranged at intervals along the second axial direction B and are fixed on the ground, two movable frame assemblies 100 are arranged at intervals along the first axial direction a and are movably connected above the fixed base assemblies 200, the middle of each movable frame assembly 100 is in a suspended state, and the battery pack is hung at the middle part of each movable frame assembly 100 close to the corresponding fixed base assembly 200.

More specifically, the holder assembly 200 includes a base plate 210, a fixing plate 230, and a plurality of bottom support bars 220 connecting the base plate 210 and the fixing plate 230, the holder assembly 200 being fixed to a horizontal plane by the base plate 210, and the base plate 210 supporting the fixing plate 230 by the plurality of bottom support bars 220. The movable frame assembly 100 includes a first movable plate 110, a second movable plate 120, and a first connecting rod 130 connecting the first movable plate 110 and the second movable plate 120, wherein the first movable plate 110 and the second movable plate 120 are respectively movably connected to fixing plates 230 disposed at two ends of the movable frame assembly 100, and the mounting position 131 is disposed on the first connecting rod 130. It should be noted that the bottom support bar 220 can be arranged vertically or obliquely. Further, in the present embodiment, the first sliding slot 111 and the first fixing hole 112 are disposed on the first movable plate 110, the first sliding slot 111 and the first fixing hole 112 are also disposed on the second movable plate 120, and the first rib 231 and the second fixing hole 232 are disposed on the fixing plate 230.

In order to improve the structural strength of the movable frame assembly 100, in an embodiment, as shown in fig. 1 to 3, the movable frame assembly 100 further includes a second connecting rod 140 and a plurality of upper supporting rods 150 connecting the second connecting rod 140 and the first connecting rod 130, the second connecting rod 140 is disposed parallel to the first connecting rod 130, and the upper supporting rods 150 are perpendicular to the first connecting rod 130 and the second connecting rod 140, respectively. It should be noted that the upper support bar 150 may be disposed vertically or obliquely.

Furthermore, in order to facilitate the external tool to be mounted on the mounting connector of the first connecting rod 130, in one embodiment, as shown in fig. 1 to 3, the second connecting rod 140 is provided with an operation hole 141 corresponding to the mounting position 131, and the external tool extends into the mounting position 131 through the operation hole 141. Thus, an external tool can extend into the mounting position 131 through the operation hole 141, and then the mounting and dismounting operation is performed on the mounting and connecting piece. Specifically, the positions and the number of the operation holes 141 are both provided corresponding to the mounting positions 131. In order to facilitate the mounting connection of the external tool to the first connecting rod 130, in other embodiments, the first connecting rod 130 and the second connecting rod 140 may be vertically staggered.

It should be noted that, in the present embodiment, as shown in fig. 1 to 3, in order to improve the structural strength of the fixing device, the movable frame assembly 100 is provided with a plurality of first connecting rods 130 distributed along the first axial direction a, and a plurality of first reinforcing rods 160 are disposed between adjacent first connecting rods 130. Similarly, the movable frame assembly 100 is provided with a plurality of second connecting rods 140 distributed along the first axial direction a, and a plurality of second reinforcing rods 170 are disposed between adjacent second connecting rods 140. So, fixing device's overall structure intensity has been improved greatly.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. The fixing device for the battery pack is characterized by comprising a plurality of movable frame assemblies (100) and fixed seat assemblies (200) movably connected with the movable frame assemblies (100), wherein the fixed seat assemblies (200) are used for bearing the movable frame assemblies (100) and the battery pack, each movable frame assembly (100) is provided with an installation position (131), each installation position (131) is correspondingly provided with an installation connecting piece, the battery pack is connected to the plurality of movable frame assemblies (100) through the installation connecting pieces arranged at the installation positions (131),

the movable frame assemblies (100) can be movably matched with the fixed seat assembly (200) along two directions of a first axial direction A respectively, each installation connecting piece can be movably matched with the installation position (131) along two directions of a second axial direction B, and the first axial direction A and the second axial direction B are not coincident and are not parallel.

2. The fastening device of claim 1, wherein the first axis A and the second axis B are disposed vertically.

3. The fixing device according to claim 1, wherein the movable frame assembly (100) is provided with a plurality of first sliding grooves (111) extending along the first axial direction a and arranged in parallel, the fixed frame assembly (200) is provided with a plurality of first ribs (231) matched with the first sliding grooves (111), and the first ribs (231) can slide along the first axial direction a in the first sliding grooves (111).

4. The fastening device of claim 1, wherein the movable frame assembly (100) is provided with a plurality of first fastening holes (112) distributed along the first axial direction A, the fixed seat assembly (200) is provided with a plurality of second fastening holes (232) distributed along the first axial direction A, and the fastening device further comprises a first fastening member which passes through the first fastening holes (112) and the second fastening holes (232) in sequence to fixedly connect the movable frame assembly (100) and the fixed seat assembly (200).

5. A fixation device according to claim 4, wherein the first fixation hole (112) is elongated extending along a first axial direction A,

and/or the second fixing hole (232) is in a long strip shape extending along the first axial direction A.

6. The fixture according to claim 1, wherein the mounting location (131) is in the form of an elongated hole extending along the second axial direction B, the fixture further comprising a second fastener passing through the mounting location (131) and a mounting structure on a battery pack in sequence to fixedly connect the movable frame assembly (100) and the battery pack.

7. The fixing device according to claim 1, wherein the number of the mounting positions (131) is plural, and the plural mounting positions (131) are spaced along the second axial direction B.

8. The fixing device according to claim 1, wherein the fixing device comprises two oppositely arranged movable frame assemblies (100), and two movable frame assemblies (100) are distributed at two ends of the fixed seat assembly (200) along a first axial direction A, and the fixing device further comprises two oppositely arranged fixed seat assemblies (200), and two fixed seat assemblies (200) are distributed at two ends of the movable frame assembly (100) along a second axial direction B, and two fixed seat assemblies (200) are arranged at intervals, so that a battery pack can be arranged between the two fixed seat assemblies (200).

9. The fixture according to claim 8, wherein the holder assembly (200) comprises a bottom plate (210), a fixing plate (230), and a plurality of bottom support rods (220) connecting the bottom plate (210) and the fixing plate (230), the holder assembly (200) is fixed to a horizontal plane by the bottom plate (210), and the bottom plate (210) supports the fixing plate (230) by the plurality of bottom support rods (220); the adjustable shelf assembly (100) comprises a first movable plate (110), a second movable plate (120) and a first connecting rod (130) connected with the first movable plate (110) and the second movable plate (120), wherein the first movable plate (110) and the second movable plate (120) are respectively and movably connected with the fixed plates (230) at two ends of the adjustable shelf assembly (100), and the mounting positions (131) are arranged on the first connecting rod (130).

10. The fixture according to claim 9, wherein the head assembly (100) further comprises a second connecting rod (140) and a plurality of upper support rods (150) connecting the first connecting rod (130) and the second connecting rod (140), the second connecting rod (140) being disposed parallel to the first connecting rod (130), and the upper support rods (150) being perpendicular to the first connecting rod (130) and the second connecting rod (140), respectively.

11. The fixing device according to claim 10, characterized in that the second connecting rod (140) is provided with an operation hole (141) provided in correspondence with the mounting location (131), through which operation hole (141) an external tool can be inserted into the mounting location (131).