Tray assembly and tray

Abstract

The utility model relates to the technical field of batteries, and discloses a tray assembly and a tray, and the tray assembly comprises a tray and a jacking device. Wherein a plurality of positioning assemblies are arranged on the bottom wall of the tray, positioning grooves are formed in the tops of the positioning assemblies, and the batteries are suitable for being placed in the positioning grooves; first avoiding holes are formed in the bottom wall of the tray on the side edges of the multiple groups of positioning assemblies; the battery is placed in the positioning groove and stably kept in the tray, the tray is conveyed to a goods taking position of the stacking machine, the jacking driving mechanism drives the jacking plate to ascend, the upper portion of the jacking plate extends upwards through a first receding hole in the bottom of the tray, and the jacking plate abuts against the bottom of the battery and lifts the battery upwards so that the battery can be separated from the tray. After the battery is separated from the tray, the battery can be directly inserted or clamped by a subsequent pallet fork conveniently, and then the battery is placed in a goods shelf, so that the battery can stand without the tray, the using amount of the tray is reduced, and the investment cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery technology field, concretely relates to a tray assembly and tray. BACKGROUND

[0002] In the battery production process, the tray is only used as the carrier of the battery transfer and transportation, and does not participate in the specific manufacturing process flow of the battery. After the battery is injected, it needs to be placed in a static library for a period of time. The tray is full of batteries, and the tray is transported to the picking position of the stacker, and the fork of the stacker is difficult to transfer the battery in the tray alone. The full battery tray is directly transported to the static library by the fork, which leads to a large amount of tray use in the static library and high investment cost. SUMMARY

[0003] Therefore, the utility model provides a tray assembly and tray to solve the problem that the tray with batteries is difficult to be transported to the library alone after being transported to the picking position of the stacker in the prior art.

[0004] In the first aspect, the utility model provides a tray assembly, which comprises:

[0005] The tray is provided with a plurality of positioning assemblies on the bottom wall, the top of the positioning assembly is provided with a positioning groove, and the battery is suitable for being placed in the positioning groove; a plurality of positioning assemblies are provided with a first avoiding hole on the bottom wall of the tray on the side edge.

[0006] The jacking device comprises a jacking mechanism, and the jacking mechanism comprises a jacking driving mechanism and a jacking plate. The jacking plate is arranged on the driving end of the jacking driving mechanism and is correspondingly arranged with the positioning assembly. The jacking plate is suitable for lifting the battery upward through the first avoiding hole.

[0007] The tray assembly with the structure is used. The battery is placed in the positioning groove, the battery is stably kept in the tray, the tray is transported to the picking position of the stacker, the jacking driving mechanism drives the jacking plate to rise, the jacking plate extends upward through the first avoiding hole on the bottom of the tray, abuts against the bottom of the battery and lifts the battery upward, so that the battery is separated from the tray. After the battery is separated from the tray, the subsequent fork can directly pick or clamp the battery, and then the battery is placed in the goods shelf. The battery can be placed without the tray, the use amount of the tray is reduced, and the investment cost is reduced.

[0008] In the second aspect, the utility model further provides a tray, which comprises:

[0009] The bottom wall is provided with a plurality of positioning assemblies, and the top of the positioning assembly is provided with a positioning groove.

[0010] The surrounding frame is arranged on the outer periphery of the bottom wall.

[0011] A plurality of positioning assemblies are arranged on the bottom wall, and the top of each positioning assembly is provided with a positioning groove, and the battery is adapted to be placed in the positioning groove; a first avoiding hole is arranged on the bottom wall of the side edge of each positioning assembly; and the jacking plate of the jacking mechanism is adapted to be lifted upward through the first avoiding hole.

[0012] Beneficial effects: the tray with the first avoiding hole and the positioning assembly in the interior is used for accommodating and limiting the battery, the tray with the battery is conveyed to the picking position of the stacker, the tray is used in cooperation with the jacking device, the first avoiding hole is used for lifting the jacking plate of the jacking device, the jacking plate can lift the battery upward, so that the battery is separated from the tray, the subsequent fork can directly pick or clamp the battery, and then the battery is placed in the shelf. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0014] Figure 1 It is a first angle schematic view of a tray assembly of the present application;

[0015] Figure 2 It is a first angle schematic view of a tray assembly of the present application; Figure 1 It is a first angle schematic view of a tray assembly of the present application;

[0016] Figure 3 It is a second angle schematic view of a tray assembly of the present application;

[0017] Figure 4 It is a second angle schematic view of a tray assembly of the present application; Figure 1 It is a schematic view of the jacking device in the tray assembly;

[0018] Figure 5 It is a schematic view of the jacking device in the tray assembly; Figure 1 It is a schematic view of the jacking device in the tray assembly;

[0019] Figure 6 It is a schematic view of the jacking device in the tray assembly; Figure 5 It is a schematic view of the jacking device in the tray assembly;

[0020] Figure 7 It is a schematic view of the jacking device in the tray assembly; Figure 1 It is a schematic view of the jacking device in the tray assembly.

[0021] Explanation of reference signs:

[0022] 1, tray; 11, first avoiding hole; 12, positioning assembly; 121, positioning block; 1211, positioning groove; 12111, accommodating table; 1212, third guide slope; 13, second avoiding hole; 2, jacking device; 21, jacking mechanism; 211, jacking drive mechanism; 212, jacking platform; 2121, connecting platform assembly; 21211, first connecting plate; 21212, connecting column; 21213, second connecting plate; 2122, jacking plate; 21221, first bearing part; 21222, second bearing part; 2123, limiting assembly; 21231, first limiting block; 212311, first guide slope; 21232, second limiting block; 212321, second guide slope; 3, battery. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] After the battery is injected, it needs to be placed in a static library for a period of time. The tray is full of batteries, and after the tray is transported to the picking position of the stacker crane, the battery is located in the interior of the tray. The fork of the stacker crane cannot transport the battery in the tray alone, so the fork directly transports the tray full of batteries to the static library, resulting in a large amount of tray use in the static library and high investment cost.

[0025] The embodiments of the present application will be described below with reference to Figures 1 to 7 .

[0026] According to the embodiments of the present application, on the one hand, a tray assembly is provided, which comprises a tray 1 and a jacking device 2.

[0027] Among them, the bottom wall of the tray 1 is provided with a plurality of positioning assemblies 12, the top of the positioning assembly 12 is provided with a positioning groove 1211, the battery 3 is adapted to be placed in the positioning groove 1211, and the groove bottom of the positioning groove 1211 forms an accommodating table 12111 for bearing the battery 3; the bottom wall of the tray 1 on the side of the plurality of positioning assemblies 12 is provided with a first avoiding hole 11; the jacking device 2 comprises a jacking mechanism 21, the jacking mechanism 21 comprises a jacking drive mechanism 211 and a jacking plate 2122, the jacking plate 2122 is arranged at the driving end of the jacking drive mechanism 211 and is correspondingly arranged with the positioning assembly 12; the jacking plate 2122 is adapted to lift the battery 3 upward through the first avoiding hole 11.

[0028] The tray assembly of this structure, the battery 3 is placed in the positioning groove 1211, the battery 3 is stably kept in the tray 1, the tray 1 is transported to the picking position of the stacker, the jacking driving mechanism 211 drives the jacking plate 2122 to rise, the jacking plate 2122 extends upward through the first avoiding hole 11 at the bottom of the tray 1, the jacking plate 2122 abuts against the bottom of the battery 3 and lifts the battery 3 upward, so that the battery 3 is separated from the tray 1, after the battery 3 is separated from the tray 1, the subsequent fork can directly pick or clamp the battery 3, then the battery 3 is placed in the shelf, the battery 3 can be placed without the tray 1, the use amount of the tray 1 is reduced, and the investment cost is reduced.

[0029] In some embodiments, as shown in Figure 5 and Figure 6 each set of positioning assemblies 12 includes two positioning blocks 121 arranged opposite and spaced apart, and the positioning groove 1211 is arranged at the top of the positioning block 121; a plurality of sets of positioning assemblies 12 are arranged in a row, the first avoiding hole 11 extends along the arrangement direction of the plurality of sets of positioning assemblies 12, and the first avoiding hole 11 is arranged between the two positioning blocks 121 of each set of positioning assemblies 12. The two positioning blocks 121 of each set of positioning assemblies 12 are arranged opposite and spaced apart to form an avoiding space between the two positioning blocks 121 for the jacking plate 2122 to rise and fall, so as to facilitate the jacking plate 2122 to rise above the positioning block 121, so that the bottom of the battery 3 is spaced apart from the tray 1, and the fork is convenient to extend into the battery 3 below from the bottom of the battery 3 and clamp the battery 3. The two ends of the battery 3 in the length direction are arranged in the positioning groove 1211 of the two positioning blocks 121 of each set.

[0030] In some embodiments, as shown in Figure 5 and Figure 6 the middle region of each positioning block 121 is disconnected to form a partition area; the bottom wall of the tray 1 below the partition area is provided with a second avoiding hole 13, one end of the second avoiding hole 13 communicates with the first avoiding hole 11. The jacking mechanism 21 is provided with a second bearing part 21222 for bearing the battery and a second limiting block 21232 for limiting the battery, and the middle region of the positioning block 121 is disconnected to form a partition area, so that the second bearing part 21222 and the second limiting block 21232 can rise and fall through the second avoiding hole 13 and the partition area. The end of the second avoiding hole 13 away from the first avoiding hole 11 is located outside the side wall of the positioning block 121 away from the first avoiding hole 11, so that the second limiting block 21232 is conveniently lifted from the outside of the positioning block 121 and the battery 3 and abuts against the side of the battery 3.

[0031] As shown in Figure 5 and Figure 6 each set of positioning assemblies 12 bears one battery, and the positioning grooves 1211 of the four positioning blocks 121 of the adjacent positioning assemblies 12 are also used to bear one battery 3.

[0032] In some alternative embodiments, as shown in Figure 6 and Figure 7 each positioning assembly 12 is provided with two first avoiding holes 11 arranged in parallel and spaced apart on the bottom wall of the inner side of each row, and a second avoiding hole 13 is arranged on the side opposite to the two first avoiding holes 11, and the second avoiding holes 13 arranged on the side edges of the two first avoiding holes 11 are arranged oppositely. The jacking mechanism 21 is provided with a first bearing part 21221 for bearing the battery, and the first bearing part 21221 is provided with a first limiting block 21231 for limiting the battery cell. Each jacking device 2 includes two groups of jacking mechanisms 21 arranged oppositely and spaced apart, and the first bearing part 21221 and the first limiting block 21231 of the two groups of jacking mechanisms 21 are adapted to be lifted through the first avoiding hole 11, and the oppositely arranged second avoiding hole 13 is used for lifting the second bearing part 21222 and the second limiting block 21232 of the two groups of jacking mechanisms 21.

[0033] In some alternative embodiments, the second avoiding hole 13 is perpendicular to the first avoiding hole 11, and a plurality of second avoiding holes 13 are arranged equidistantly along the length direction of the first avoiding hole 11.

[0034] In other embodiments, each group of positioning assemblies 12 can further include a positioning block 121, and an avoiding through hole is arranged in the middle of the positioning block 121, and the jacking plate 2122 is lifted through the avoiding through hole.

[0035] In some alternative embodiments, as shown in Figures 4 to 6 the jacking mechanism 21 further includes a connecting platform assembly 2121, and the jacking plate 2122 is provided with a plurality of jacking plates 2122, the driving end of the jacking driving mechanism 211 is connected to the connecting platform assembly 2121, and the plurality of jacking plates 2122 are arranged spaced apart on the top of the connecting platform assembly 2121. By driving the connecting platform assembly 2121 to lift through one jacking driving mechanism 211, all the jacking plates 2122 can be driven to lift, and each jacking plate 2122 jacks one battery 3, so that the connecting platform assembly 2121 can jack a plurality of batteries 3 at the same time.

[0036] As shown in Figure 5 in some embodiments, the tray 1 has a long side and a wide side, a plurality of positioning assemblies 12 are arranged in rows and spaced apart along the length direction of the tray 1, and the first avoiding hole 11 extends along the length direction of the tray 1. The connecting platform assembly 2121 extends along the length direction of the tray 1, and the plurality of jacking plates 2122 are arranged spaced apart along the length direction of the connecting platform assembly 2121. When the plurality of jacking plates 2122 are lifted upward at the same time, the batteries 3 above each row of positioning assemblies 12 can be lifted upward at the same time.

[0037] In other embodiments, the lifting plate 2122 can also be provided in a strip shape and extend along the arrangement direction of the plurality of positioning assemblies 12, and the lifting plate 2122 simultaneously lifts the plurality of batteries 3 in each row of positioning assemblies 12.

[0038] In some optional embodiments, as shown in Figure 4 Each lifting device 2 includes two sets of oppositely and spaced-apart lifting mechanisms 21, and the lifting plate 2122 on the connecting platform assembly 2121 of the two sets of lifting mechanisms 21 is adapted to jointly lift the battery 3 from both ends in the length direction of the battery 3. The first avoiding hole 11 is provided with two rows. Each lifting device 2 is provided with two sets of lifting mechanisms 21, which can simultaneously lift the battery 3 upward from both ends in the length direction of the battery 3, and is beneficial to stably lift the battery 3 and prevent the battery 3 from shaking. The area between the two sets of lifting mechanisms 21 can form an avoiding space, which is convenient for the fork to pass through. The two first avoiding holes 11 are used for the upper part of the connecting platform assembly 2121 of the two sets of lifting mechanisms 21 to pass through.

[0039] In other embodiments, each lifting device 2 can also be provided with one set or more than three sets of lifting mechanisms 21. When one set of lifting mechanisms 21 is provided, the lifting plate 2122 of the lifting mechanism 21 lifts the battery 3 upward from the middle area of the bottom surface of the battery 3, so as to ensure that the battery 3 is stably lifted. When more than three sets of lifting mechanisms 21 are provided, the plurality of lifting mechanisms 21 are arranged in a spaced-apart manner along the length direction of the bottom surface of the battery 3.

[0040] As shown in Figures 1 to 4 In some embodiments, the lifting mechanism 21 includes a lifting platform 212, and the lifting platform 212 includes a limiting assembly 2123 arranged on the lifting plate 2122. The limiting assembly 2123 is adapted to clamp and position the battery 3 from the side surface of the battery 3. The limiting assembly 2123 limits the battery 3, which can prevent the battery 3 from shaking during lifting, or prevent the battery 3 from shaking when the battery 3 is lifted to the highest position. The battery 3 can be stably maintained at a predetermined height, so that the subsequent fork moves to the battery 3 to transfer the battery 3. The connecting platform assembly 2121, the lifting plate 2122 and the limiting assembly 2123 constitute the lifting platform 212.

[0041] As shown in Figure 2As shown, in some embodiments, the jacking plate 2122 comprises a first bearing part 21221 extending along the length direction of the first avoiding hole 11 and a second bearing part 21222 perpendicular to the first bearing part 21221; the limiting assembly 2123 comprises two first limiting blocks 21231 oppositely arranged at the two ends of the first bearing part 21221 and a second limiting block 21232 arranged at the end of the second bearing part 21222. The first bearing part 21221 extends along the length direction of the first avoiding hole 11 and passes through the tray 1 through the first avoiding hole 11, and the second bearing part 21222 passes through the tray 1 through the second avoiding hole 13. The battery 3 comprises a square shell battery 3, the two first limiting blocks 21231 abut the two large faces of the battery 3 outside, preventing the battery 3 from shaking along its thickness direction, and the two second limiting blocks 21232 on the two second bearing parts 21222 abut the two side faces of the battery 3 in the length direction, preventing the battery 3 from shaking along its length direction. The first limiting block 21231 cooperates with the second limiting block 21232 to effectively prevent the battery 3 from shaking, smoothly lift the battery 3 upward, and stably keep the battery 3 at a predetermined height.

[0042] In some optional embodiments, as Figure 2 As shown, the top of the first limiting block 21231 is provided with a first guide inclined surface 212311, and the top of the second limiting block 21232 is provided with a second guide inclined surface 212321; the first guide inclined surface 212311 is downwardly inclined toward the first bearing part 21221, and the second guide inclined surface 212321 is downwardly inclined toward the second bearing part 21222. When the jacking plate 2122 rises, the bottom of the battery 3 can slide into the top surface of the first bearing part 21221 and the second bearing part 21222 along the first guide inclined surface 212311 and the second guide inclined surface 212321, facilitating the battery 3 to accurately and quickly enter the bearing surface of the first bearing part 21221 and the second bearing part 21222, and preventing the battery 3 from being damaged by the edge structure.

[0043] Optionally, in some embodiments, as Figure 6 As shown, the positioning block 121 on the outer edge of the slot of the positioning slot 1211 is provided with a third guide inclined surface 1212 downwardly inclined toward the inside of the positioning slot 1211. During the process of placing the battery 3 into the tray 1, the battery 3 slides into the positioning slot 1211 along the third guide inclined surface 1212, facilitating the battery 3 to be quickly placed in position, and preventing the battery 3 from being damaged.

[0044] In some embodiments, as Figure 5 and Figure 7As shown, the tray 1 has multiple rows of positioning components 12, and each row of positioning components 12 holds a row of batteries 3. The number of lifting devices 2 corresponds to the number of rows of batteries 3. For example, in some embodiments, the tray 1 has two rows of positioning components 12, and the lifting devices 2 have two sets. Each set of positioning components 12 has two parallel and spaced first clearance holes 11.

[0045] like Figure 4 As shown, in some optional embodiments, the connecting platform assembly 2121 includes a first connecting plate 21211, a connecting column 21212, and a second connecting plate 21213 arranged sequentially from bottom to top. The driving end of the lifting drive mechanism 211 is connected to the first connecting plate 21211, and the connecting column 21212 is connected to the first connecting plate 21211 and the second connecting plate 21213. Multiple lifting plates 2122 are spaced apart on the top of the second connecting plate 21213. The lifting drive mechanism 211 drives the first connecting plate 21211 to rise, which can simultaneously drive all the lifting plates 2122 to rise and fall, which is beneficial for simultaneously lifting multiple batteries 3, and can also simplify the structure of the lifting mechanism 21 and save costs.

[0046] For example, in some embodiments, two connecting posts 21212 are provided, the first connecting plate 21211 is rectangular, and the two connecting posts 21212 are located at both ends of the first connecting plate 21211. The driving end of the lifting drive mechanism 211 is connected to the middle position of the first connecting plate 21211. The middle region of the second connecting plate 21213 is thickened to ensure its structural strength and to ensure stable support of the battery 3. The first bearing part 21221 and the second bearing part 21222 are fixed to the top of the second connecting plate 21213.

[0047] According to an embodiment of the present invention, another aspect, a tray 1, is also provided, such as... Figures 5 to 7 As shown, it includes a base wall, a frame, and multiple sets of positioning components 12.

[0048] The frame surrounds the outer perimeter of the bottom wall; multiple positioning components 12 are provided on the bottom wall, and the top of the positioning component 12 is provided with a positioning groove 1211, in which the battery 3 is suitable for placement; the bottom wall on the side of the multiple positioning components 12 is provided with a first clearance hole 11; the lifting plate 2122 of the lifting mechanism 21 is suitable for lifting the battery 3 upward through the first clearance hole 11.

[0049] The tray 1 of the structure is internally provided with the first avoiding hole 11 and the positioning assembly 12, the positioning groove 1211 at the top of the positioning assembly 12 is used for accommodating and limiting the battery 3, the tray 1 loaded with the battery 3 is conveyed to a picking position of a stacker, a jacking device 2 is adapted to be arranged below the picking position, the tray 1 is matched with the jacking device 2, the first avoiding hole 11 is used for lifting and lowering of the jacking plate 2122 of the jacking device 2, so that the jacking plate 2122 can lift the battery 3 upward, so that the battery 3 is separated from the tray 1, and then the battery 3 is placed in a goods shelf, the battery 3 can be placed without the tray 1, the use amount of the tray 1 is reduced, and the investment cost is reduced.

[0050] The tray 1 in the embodiment is the tray 1 used in the tray assembly, and has all the technical features of the tray 1 in the tray assembly, which will not be described herein again.

[0051] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A tray assembly, characterized by The utility model relates to a battery lifting device, including: A tray (1), the bottom wall of the tray (1) is equipped with a plurality of sets of positioning assembly (12), the top of positioning assembly (12) is equipped with positioning groove (1211), and the battery (3) is suitable for placing in the positioning groove (1211);The bottom wall of the tray (1) is equipped with the first avoiding hole (11) on the side of a plurality of sets of positioning assembly (12); Jacking device (2), including jacking mechanism (21), the jacking mechanism (21) includes jacking drive mechanism (211) and jacking plate (2122), and the jacking plate (2122) is equipped in the drive end of jacking drive mechanism (211) and is correspondingly arranged with positioning assembly (12);The jacking plate (2122) is suitable for lifting battery (3) upwards through the first avoiding hole (11).

2. The tray assembly of claim 1, wherein, Each set of positioning assembly (12) includes the positioning block (121) that is opposite and interval arrangement, and the positioning groove (1211) is equipped in the top of positioning block (121);A plurality of sets of positioning assembly (12) are arranged in rows, and the first avoiding hole (11) extends along the row arrangement direction of a plurality of sets of positioning assembly (12), and the first avoiding hole (11) is arranged between two positioning blocks (121) of each set of positioning assembly (12).

3. The tray assembly of claim 2, wherein, The middle area of positioning block (121) is disconnected to form a partition area, and the second avoiding hole (13) is arranged on the bottom wall below the partition area, and one end of the second avoiding hole (13) is communicated with the first avoiding hole (11).

4. The tray assembly of claim 3, wherein, The bottom wall inside each row of positioning assembly (12) is equipped with two parallel and interval arranged first avoiding holes (11), and the second avoiding hole (13) is arranged on the side opposite to the two first avoiding holes (11), and the second avoiding holes (13) on the side of the two first avoiding holes (11) are oppositely arranged.

5. The tray assembly of claim 4, wherein, The jacking mechanism (21) further includes a connecting platform assembly (2121), the jacking plate (2122) is provided in plurality, the drive end of the jacking drive mechanism (211) is connected to the connecting platform assembly (2121), and the plurality of jacking plates (2122) are arranged at the top of the connecting platform assembly (2121) in interval.

6. The tray assembly of claim 5, wherein, Each jacking device (2) includes two sets of jacking mechanism (21) that are oppositely and interval arranged, and the jacking plates (2122) on the two sets of connecting platform assemblies (2121) are suitable for jointly lifting the battery (3) from the two ends of the length direction of the battery (3).

7. The tray assembly of claim 5, wherein, The jacking mechanism (21) further includes a limiting assembly (2123), and the limiting assembly (2123) is arranged on the jacking plate (2122). The limiting assembly (2123) is suitable for clamping and positioning the battery (3) from the side of the battery (3).

8. The tray assembly of claim 7, wherein, The jacking plate (2122) includes a first bearing part (21221) and a second bearing part (21222), the first bearing part (21221) extends along the length direction of the first avoiding hole (11), and the second bearing part (21222) is perpendicular to the first bearing part (21221). The limiting assembly (2123) comprises two first limiting blocks (21231) and a second limiting block (21232), the two first limiting blocks (21231) are oppositely arranged at the two ends of the first bearing part (21221), and the second limiting block (21232) is arranged at the end of the second bearing part (21222).

9. The tray assembly of claim 5, wherein, The connecting platform assembly (2121) comprises a first connecting plate (21211), a connecting column (21212) and a second connecting plate (21213) arranged in sequence from bottom to top, the driving end of the jacking driving mechanism (211) is connected with the first connecting plate (21211), the connecting column (21212) connects the first connecting plate (21211) and the second connecting plate (21213), and a plurality of jacking plates (2122) are arranged at the top of the second connecting plate (21213) at intervals.

10. A tray characterized in that, Comprise: a bottom wall; a surrounding frame surrounding the outer periphery of the bottom wall; a plurality of positioning assemblies (12) arranged on the bottom wall, the top of the positioning assembly (12) is provided with a positioning groove (1211), and the battery (3) is adapted to be placed in the positioning groove (1211); a first avoiding hole (11) is arranged on the side edge of the plurality of positioning assemblies (12) and the bottom wall; the jacking plate (2122) of the jacking mechanism (21) is adapted to lift the battery (3) upward through the first avoiding hole (11).

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