Sub-compartment type energy storage container

Abstract

The utility model discloses a subdivision type energy storage container which comprises a container body, a containing cabin and a partition plate assembly are arranged in the container body, and the partition plate assembly is installed in the containing cabin in a detachable mode and divides the containing cabin into a first cabin and a second cabin. The first cabin and the second cabin are distributed in the height direction of the box body; a plurality of moving guide pieces are arranged on the end face of the partition plate assembly; and the moving guide piece is used for being in rolling fit with an electrical appliance element. According to the subdivision type energy storage container, the containing cabin of the container body is divided into the first cabin and the second cabin through the partition plate assembly, and the battery pack and the energy storage converter can be placed in the first cabin and the second cabin in a separated mode; and a movable guide piece is arranged on the partition plate assembly so as to guide the energy storage converter to be put in or taken out.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery container technical field especially relates to a kind of energy storage container of compartment. BACKGROUND

[0002] Battery container, usually refers to energy storage container, is with container as integral transport component, contain multiple battery pack and PCS (energy storage converter, such as DC bus, transformer, capacitor, inverter, filter etc.), through the electrical connection of energy storage converter and battery panel realizes the transformation, storage and discharge etc.

[0003] The existing energy storage system layout generally places energy storage converter at the bottom or side of battery cabin, which is directly electrically connected with battery pack of battery cabin, without setting a separate cabin for placing energy storage converter. In this way, battery pack and energy storage converter are not independent of each other, which can easily cause overheating in the battery cabin, and the internal space of the battery cabin is small. If the battery pack and the energy storage converter are in a centralized placement state, it will also cause inconvenience in maintenance.

[0004] In addition, when setting the energy storage converter, it is usually directly pushed into the box, which has a large friction with the box, and can cause damage to the energy storage converter during the placement process. UTILITY MODEL CONTENTS

[0005] In order to overcome at least one of the defects of the prior art described above, the utility model provides a kind of energy storage container of compartment, its with partition plate component separates the accommodation cabin of box into first cabin and second cabin, can separate the placement battery pack and energy storage converter;And with the mobile guide on partition plate component is set to guide the placement or removal of energy storage converter.

[0006] The technical scheme adopted by the utility model to solve the problem is:

[0007] A kind of energy storage container of compartment, comprising,

[0008] Box, the accommodation cabin and partition plate component are equipped in the box, the partition plate component is installed in the accommodation cabin in detachable mode, and the accommodation cabin is separated into first cabin and second cabin, and the first cabin and the second cabin are distributed in the height direction of the box;

[0009] The end surface of the partition plate component is provided with a plurality of mobile guides;The mobile guide is used for rolling cooperation with electric element.

[0010] Further, the partition assembly comprises a partition body and a partition mounting beam, the partition body is provided with the partition mounting beam on both sides in the first direction, and the partition mounting beam extends in the second direction; the partition mounting beam is provided with a plurality of connecting pieces; and the movement guide is arranged at the top end of the partition mounting beam.

[0011] Further, the connecting piece comprises a first connecting piece and a second connecting piece, the first connecting piece and the second connecting piece are vertically connected; the first connecting piece is connected to the partition mounting beam and is arranged in close contact with the bottom end surface of the partition mounting beam; and the second connecting piece is provided with a plurality of connecting holes.

[0012] Further, a plurality of partition bodies are arranged in the second direction; and the side portions of the plurality of partition bodies in the first direction are connected to the partition mounting beam.

[0013] Further, the adjacent two partition bodies are connected to the partition mounting beam in a detachable manner.

[0014] Further, the partition body is provided with a sealing piece at the end portion in the second direction, and the sealing piece extends in the first direction.

[0015] Further, the sealing piece comprises a sealing mounting strip and sealing glue, the sealing mounting strip is provided with a sealing groove, the sealing groove extends in the first direction, and the sealing groove is filled with the sealing glue.

[0016] Further, the partition body is filled with a layer of thermal insulation material.

[0017] Further, the box body is provided with at least two partition pieces, the partition pieces extend in the height direction of the box body; the at least two partition pieces are distributed at intervals in the first direction; the partition assembly is arranged between the adjacent two partition pieces; and the partition mounting beam is connected to the partition piece.

[0018] Further, the partition piece divides the first cabin into a plurality of first sub-cavities; and the partition piece divides the second cabin into a plurality of second sub-cavities.

[0019] Further, the side wall of the second sub-cavity is provided with a plurality of supporting pieces arranged at intervals in the height direction.

[0020] Further, the partition piece comprises a plurality of partition beams, the plurality of partition beams are arranged at intervals in the second direction; and the partition mounting beam is detachably connected to the plurality of partition beams of the same partition piece.

[0021] Further, the top end of the plurality of partition beams of the same partition piece is connected to a supporting beam.

[0022] Further, the first cabin is a PCS cabin; and the second cabin is a battery cabin.

[0023] Further, the moving guide comprises a universal ball.

[0024] In summary, the utility model has the following technical effects:

[0025] 1. The containing cabin is divided into a first cabin and a second cabin by the partition plate assembly, so that the energy storage converter and the battery pack are placed separately in different cabins, and heat does not affect each other.

[0026] 2. The partition plate assembly can be detached, and when the battery pack is maintained, the partition plate assembly can be detached from the containing cabin, the first cabin and the second cabin are in a conductive state in the maintenance state, and there is enough maintenance space above the battery pack, so that maintenance is more convenient.

[0027] 3. A plurality of moving guides are arranged on the partition plate assembly, and when the energy storage converter is loaded or unloaded, the energy storage converter can roll with the plurality of moving guides of the partition plate assembly, so that the friction between the energy storage converter and the partition plate assembly in the disassembly process is reduced, and damage caused by the sliding friction of the energy storage converter and the contact surface during disassembly is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a structural schematic view of the utility model;

[0029] Figure 2 It is a structural schematic view of a plurality of partition plate assemblies of the utility model;

[0030] Figure 3 It is a structural schematic view of the partition plate assembly of the utility model.

[0031] Among them, the meaning of the reference signs is as follows: 10, box body; 11, first cabin; 12, second cabin; 13, partition beam; 131, battery bracket; 14, support beam; 20, partition plate assembly; 21, moving guide; 22, partition plate main body; 23, partition plate mounting beam; 24, connecting piece; 25, sealing mounting strip; 251, sealing groove; 26, sealing glue. DETAILED DESCRIPTION

[0032] In order to better understand and implement, the technical solutions in the embodiments of the utility model will be clearly and completely described below by combining the drawings in the embodiments of the utility model.

[0033] In the description of the utility model, it is necessary to explain that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model.

[0035] Referring to Figure 1 , Figure 2 and Figure 3 , the utility model discloses a kind of compartment type energy storage containers, including box 10, is equipped with containing cabin and baffle assembly 20 in box 10, baffle assembly 20 is installed in containing cabin in detachable mode, and baffle assembly 20 can be separated into first cabin 11 and second cabin 12 after being loaded into containing cabin, first cabin 11 and second cabin 12 are distributed in the height direction of box 10.

[0036] Still can be equipped with several movement guides 21 on the end face of baffle assembly 20, movement guides 21 can be rolled with electrical element, and the electrical element specifically referred to in the embodiment can be energy storage converter for energy storage container.In loading energy storage converter into first cabin 11, energy storage converter can be rolled with movement guides 21 on baffle assembly 20, to realize loading or taking out guide.

[0037] On the basis of the above structure, when using the compartment type energy storage container of the utility model, first cabin 11 is above second cabin 12 in the embodiment, and energy storage converter (such as direct current bus, transformer, capacitor, inverter, filter and the like) can be placed in first cabin 11, and second cabin 12 can be placed multiple battery packs as an example to illustrate, that is, energy storage converter and battery pack in the embodiment are above battery pack after being respectively assembled to first cabin 11 and second cabin 12.

[0038] And the energy storage converter and the plurality of battery packs will generate a large amount of heat during work, if the energy storage converter and the battery pack are arranged in a containing cabin without blocking, the heat generated by the energy storage converter and the battery pack during work will be gathered, and since the battery pack will also cause safety hazards when overheating, therefore, the application adopts the setting of the partition assembly 20 to divide the containing cabin into the first cabin 11 and the second cabin 12 by the partition assembly 20, so that the energy storage converter and the battery pack are placed separately in different cabins, so that the heat will not affect each other.

[0039] In addition, since hot air usually flows upwards, the energy storage converter in the embodiment is located above the battery pack, so that the heat generated by the energy storage converter during work can be naturally lifted by heat convection, and the heat generated by the energy storage converter located above can be more smoothly dissipated, avoiding the accumulation of heat near the battery pack, which is beneficial to the heat dissipation of the battery pack and the energy storage converter itself.

[0040] Of course, it also needs to be explained that since the partition assembly 20 is detachably installed in the containing cabin, the partition assembly 20 can be detached, and when the battery pack is maintained, the partition assembly 20 can be completely detached from the containing cabin, and the first cabin 11 and the second cabin 12 are in a conductive state during maintenance, and there is enough maintenance space above the battery pack, so that the maintenance is more convenient.

[0041] And since the moving guide 21 is arranged on the partition assembly 20, when the energy storage converter is loaded or unloaded, the energy storage converter can be rolled with the moving guide 21 of the partition assembly 20, so that the friction between the energy storage converter and the partition assembly 20 during disassembly and assembly can be reduced, and damage caused by the sliding friction of the energy storage converter and the contact surface during disassembly and assembly can be prevented.

[0042] Further, the above-mentioned partition assembly 20 includes a partition body 22 and a partition mounting beam 23, and the partition mounting beam 23 is arranged on both sides of the partition body 22 in the first direction, and the partition mounting beam 23 extends along the second direction, and the partition mounting beam 23 is provided with a plurality of connecting pieces 24; the moving guide 21 is arranged at the top end of the partition mounting beam 23.

[0043] In the embodiment, the first direction can be the width direction of the partition body 22, and the second direction is the length direction of the partition body 22.

[0044] On the basis of the structure, the partition plate body 22 is provided with a partition plate mounting beam 23 on both sides, and a connecting piece 24 is arranged on the partition plate mounting beam 23. The connecting piece 24 can be connected with the inner wall of the accommodation cabin. For example, the partition plate mounting beam 23 can be connected with the back plate wall of the box body 10 through the connecting piece 24. For another example, the partition plate mounting beam 23 can be connected with the longitudinal partition beam 13 structure arranged in the box body 10 through the connecting piece 24. In this way, the partition plate body 22 is mounted in the box body 10 through the partition plate mounting beam 23.

[0045] After the partition plate body 22 is assembled with the partition plate mounting beam 23, the partition plate body 22 serves as the main structure of the partition. In order to better block the heat flow between the first cabin 11 and the second cabin 12, the partition plate can be made of a heat insulation material in the prior art, or the partition plate body 22 can be filled with a heat insulation material structure, or the partition plate body 22 can be coated with a heat insulation material structure. In this way, the connecting piece 24 used for connecting with the box body 10 structure is directly connected with the partition plate mounting beam 23, and does not affect the arrangement of the heat insulation structure of the partition plate body 22.

[0046] In the embodiment, in order to realize the heat insulation of the partition plate body 22, a layer of heat insulation material is filled in the partition plate body 22. The heat insulation material can be selected from the heat insulation rock wool, the glass fiber layer, or the aerogel layer in the prior art. Specifically, a cavity structure is arranged in the partition plate body 22, and the layer of heat insulation material is filled in the cavity structure.

[0047] Further, the connecting piece 24 includes a first connecting piece and a second connecting piece, and the first connecting piece is vertically connected with the second connecting piece. Specifically, when the connecting piece 24 is connected with the partition plate mounting beam 23, the first connecting piece is connected with the bottom end surface of the partition plate mounting beam 23 and is arranged in abutment with the bottom end surface of the partition plate mounting beam 23. In this way, the connecting piece 24 is connected in abutment with the partition plate mounting beam 23 through the sheet structure, the connecting surface between the two is increased, and thus the connection strength is improved, and the situation that the connecting piece 24 is separated after the partition plate body 22 bears the energy storage converter is prevented. The second connecting piece vertically connected with the first connecting piece can extend out of the partition plate mounting beam 23. A plurality of connecting holes are arranged on the second connecting piece. When the second connecting piece is connected with the partition beam 13 or the back plate wall of the box body 10, the second connecting piece is connected in abutment, and screws, bolts or other structures are inserted into the connecting holes to realize the connection. In this way, the connecting surface is also increased, and the connection stability is improved.

[0048] Of course, the connecting piece 24 can also be directly selected from the screws, bolts, elastic pins or other structures in the prior art. However, the connection mode is prone to loosening. Therefore, the connecting screw can be selected to be screwed to the connecting structure of the partition plate mounting beam 23 and the box body, and nuts are screwed to both ends of the screw rod to clamp and lock the partition plate mounting beam 23 and the back plate wall or the partition beam 13 of the box body 10. In this way, the connection strength can also be improved.

[0049] Further, the partition plate bodies 22 in the embodiment are provided in plurality, that is, the same partition plate assembly 20 can have a plurality of partition plate bodies 22, and the plurality of partition plate bodies 22 are arranged in the second direction; the side portions of the plurality of partition plate bodies 22 in the first direction are connected to the partition plate mounting beam 23. In this way, the main body part for separation of the same partition plate assembly 20 is formed by the plurality of partition plate bodies 22 together. Since the energy storage container has a relatively large size, the size of the partition plate assembly 20 for separating the internal containing cabin needs to be relatively large, and since the partition plate body 22 is a structure for receiving the energy storage converter, it will bear a relatively large gravity. If the partition plate body 22 is formed by using a large-size whole plate structure, the middle strength will be relatively poor, and the situation of fracture or deformation is likely to occur.

[0050] Therefore, in the embodiment, the partition plate assembly 20 used as the separation main body is formed by the plurality of partition plate bodies 22 together to bear the energy storage converter, and each partition plate body 22 is segmented to receive and disperse the force, thereby improving the bearing strength.

[0051] It should be noted that the number of the partition plate assembly 20 can be one or more according to the size of the box body 10.

[0052] Further, the adjacent two partition plate bodies 22 are detachably spliced and connected to the partition plate mounting beam 23. On the basis of such a structure, the adjacent two partition plate bodies 22 can be detachably connected by a bolt, a screw, a bolt, etc., or a support piece structure can be provided at the top end or the bottom end of the connection position between the adjacent two partition plate bodies 22 to strengthen the connection strength of the connection position of the two partition plate bodies 22, so that the two partition plate bodies 22 are not easy to break.

[0053] Of course, the adjacent two partition plate bodies 22 can also be connected by using adhesion or welding, and the number of the partition plate bodies 22 can be selectively set according to the size of the box body 10.

[0054] Further, since the containing cabin is provided in the partition plate assembly 20, the main purpose is to reduce the heat flow between the first cabin 11 and the second cabin 12, and therefore a sealing piece can be provided at the end portion of the partition plate body 22 in the second direction, the sealing piece extends along the first direction, and if a plurality of partition plate bodies 22 are provided, the sealing piece can be provided at the end portion of the outermost partition plate body 22 to seal and cooperate with the inner wall of the containing cabin, thereby reducing the heat flow between the first cabin 11 and the second cabin 12.

[0055] In addition, if multiple partition bodies 22 are arranged, gaps are easily formed at the connection positions between adjacent two partition bodies 22, and heat can flow through the gaps. Therefore, the seal member between the end portions of the partition bodies 22 can also seal the connection positions between the two partition bodies 22, so as to reduce the heat flow between the first chamber 11 and the second chamber 12 through the gaps between the two partition bodies 22.

[0056] Specifically, the seal member includes a seal mounting strip 25 and a sealant 26. The seal mounting strip 25 is provided with a seal groove 251 extending in the first direction, and the seal groove 251 is filled with the sealant 26. In this way, when the seal structure is assembled, the seal mounting strip 25 can be assembled at the end portion of the partition body 22 by means of screws, bolts or other structures, and then the sealant 26 is filled into the seal groove 251. In this way, the separation of the sealant 26 can be reduced, and the formed seal structure is more stable.

[0057] The sealant 26 can be selected from the sealing rubber, sealing silica gel or aerogel in the prior art. Of course, the seal member can be selected from the sealing material that can be filled by the deformable foam in the prior art.

[0058] Further, the box body 10 is provided with at least two partition pieces extending in the height direction of the box body 10. The at least two partition pieces are spaced apart in the first direction. The partition assembly 20 is arranged between adjacent two partition pieces. In this structure, the partition piece can be used as the connection base of the partition assembly by connecting and assembling the partition mounting beam 23.

[0059] In this way, the second chamber 12 is divided into at least three spaces by the at least two partition pieces. In this way, the battery packs arranged in the second chamber 12 can be placed by the partition pieces, and the space for heat flow is formed between the battery packs. The heat flow property in the second chamber 12 is improved, and the heat dissipation performance is better.

[0060] Specifically, when multiple partition pieces are arranged, the multiple partition pieces are spaced apart in the first direction. The first chamber 11 is divided into multiple first sub-cavities by the partition pieces, and the second chamber 12 is divided into multiple second sub-cavities by the partition pieces. In this way, when multiple energy storage inverters are placed in the first chamber 11, the multiple energy storage inverters can be placed in the first chamber 11 by the multiple partition pieces, i.e., the multiple energy storage inverters are placed in the multiple first sub-cavities correspondingly. When multiple battery packs are placed in the second chamber 12, the multiple battery packs can be placed in the second chamber 12 by the multiple partition pieces, i.e., the multiple battery packs are placed in the multiple second sub-cavities correspondingly. The different energy storage inverters in the first chamber 11 are placed separately, and the different battery packs in the second chamber 12 are placed separately. The circuit interference and working heat interference between each other are reduced, and the overall performance of the energy storage container is improved.

[0061] Of course, the support piece 131, such as a support bracket, or a support plate, or a support piece, etc. structure can be arranged on the partition, and the support piece 131 is arranged in the height direction of the partition, that is, when a group of battery packs is placed in the same second sub-cavity, a plurality of battery packs of a group of battery packs can be placed in the same second sub-cavity, and then placed in layers by the support piece 131, which can also improve the heat dissipation performance of the battery pack.

[0062] Further, the above-mentioned partition includes a plurality of partition beams 13, in this embodiment, the same partition can be formed by three or four partition beams 13 or more partition beams 13, and the plurality of partition beams 13 are arranged in the second direction. In this way, when the battery pack is placed in the placement interval between the two partitions, the side of the battery pack is separated by the plurality of partition beams 13, so that the interval between the two partition beams 13 can be used for heat dissipation. Compared with the partition structure formed by the partition plate directly, the heat dissipation performance is better.

[0063] On the basis of the above structure, the partition plate mounting beam 23 and the plurality of partition beams 13 of the same partition can be detachably connected, that is, the plurality of partition beams 13 and the partition plate mounting beam 23 are connected by the connectors 24 at different positions, realizing segmented connection, good connection strength, and the connection points are dispersed, and the structure is more stable.

[0064] Further, since a single partition is formed by a plurality of partition beams 13, a support beam 14 can be connected to the top end of the plurality of partition beams 13, so that the partition beams 13 can be connected as a whole at the top end, increasing the overall strength.

[0065] In addition, on the basis of the structure that the support beam 14 is connected to the top end of the partition beam 13, the plurality of partition beams 13 of the partition can also be assembled with the top plate of the box body through the support beam, increasing the connection area, and thus the assembly structure is stable.

[0066] In this embodiment, the first cabin is the PCS cabin, and the second cabin is the battery cabin. Since electrical connection is needed between the energy storage converter and the battery pack, by integrating the PCS (energy storage converter) and the battery pack inside the energy storage container, by placing the energy storage converter above the battery pack, the distance between the two can be relatively short, the length of the connection cable is shortened, and the current voltage output can be realized without external PCS, reducing the cost of cable and line loss, and also making the wiring more simple, reducing the wiring difficulty and complexity, and reducing the risk of failure caused by wiring confusion.

[0067] Further, the movement guide 21 includes a universal ball, so that when the energy storage converter is put in or taken out, the universal ball is rolled on both sides of the energy storage converter to realize smooth taking out or putting in of the energy storage converter.

[0068] Of course, on the basis of the structure of the partition assembly 20 including the partition mounting beam 23, the universal ball is arranged in the middle position of the energy storage converter, which can be avoided. In addition, the movement guide 21 can also be selected as the existing roller, pulley and the like. And the universal ball can realize multi-directional guidance, and the disassembly process is more smooth.

[0069] The technical means disclosed in the utility model scheme is not only limited to the technical means disclosed in the above-mentioned embodiment, but also includes the technical scheme composed of any combination of the above technical features. It should be pointed out that for ordinary skilled persons in the art, without departing from the principle of the utility model, some improvements and refinements can be made, which are also considered as the protection scope of the utility model.

Claims

1. A compartmentalized energy storage container, characterized by, Including, The box (10) is provided with a containing cabin and a partition assembly (20) in the box (10), the partition assembly (20) is detachably installed in the containing cabin and separates the containing cabin into a first cabin (11) and a second cabin (12), and the first cabin (11) and the second cabin (12) are distributed in the height direction of the box (10). The end face of the partition assembly (20) is provided with a plurality of movement guides (21); the movement guides (21) are used for rolling cooperation with electrical element.

2. The segmented energy storage container of claim 1, wherein, The partition assembly (20) comprises a partition main body (22) and a partition mounting beam (23), the partition main body (22) is provided with the partition mounting beam (23) on both sides in the first direction, and the partition mounting beam (23) extends in the second direction; the partition mounting beam (23) is provided with a plurality of connecting pieces (24); and the movement guides (21) are arranged at the top end of the partition mounting beam (23).

3. The segmented energy storage container of claim 2, wherein, The connecting piece (24) comprises a first connecting sheet and a second connecting sheet, the first connecting sheet and the second connecting sheet are vertically connected; the first connecting sheet is connected to the partition mounting beam (23) and is arranged in close contact with the bottom end face of the partition mounting beam (23); and the second connecting sheet is provided with a plurality of connecting holes.

4. The segmented energy storage container of claim 2, wherein, The partition main body (22) is provided with a plurality of partition main bodies (22) arranged in the second direction; and the plurality of partition main bodies (22) are connected to the partition mounting beam (23) on the side in the first direction.

5. The segmented energy storage container of claim 4, wherein, Two adjacent partition main bodies (22) are detachably connected and connected to the partition mounting beam (23).

6. The segmented energy storage container of claim 2, wherein, The partition main body (22) is provided with a sealing piece at the end in the second direction, and the sealing piece extends in the first direction.

7. The segmented energy storage container of claim 6, wherein, The sealing piece comprises a sealing mounting strip (25) and a sealing glue (26), the sealing mounting strip (25) is provided with a sealing groove (251), the sealing groove (251) extends in the first direction, and the sealing groove (251) is filled with the sealing glue (26).

8. The segmented energy storage container of any of claims 2-7, wherein, The partition main body (22) is filled with a layer of heat insulation material.

9. The segmented energy storage container of any of claims 2-7, wherein, The box (10) is provided with at least two partition pieces extending in the height direction of the box (10); at least two partition pieces are distributed in the first direction; the partition assembly (20) is arranged between two adjacent partition pieces; and the partition mounting beam (23) is connected with the partition piece.

10. The segmented energy storage container of claim 9, wherein, The partition piece divides the first cabin (11) into a plurality of first sub-cavities; and the partition piece divides the second cabin (12) into a plurality of second sub-cavities.

11. The segmented energy storage container of claim 10, wherein, The side wall of the second sub-cavity is provided with a supporting piece (131) arranged at intervals in the height direction.

12. The segmented energy storage container of claim 9, wherein, The partition piece comprises a plurality of partition beams (13), and the plurality of partition beams (13) are arranged at intervals in the second direction; the partition mounting beam (23) is detachably connected with the plurality of partition beams (13) of the same partition piece.

13. The segmented energy storage container of claim 12, wherein, The top end of the plurality of partition beams (13) of the same partition piece is connected with a supporting beam (14).

14. The segmented energy storage container of any of claims 1-7, wherein, The first cabin (11) is a PCS cabin; the second cabin (12) is a battery cabin.

15. The segmented energy storage container of any of claims 1-7, wherein, The movement guide (21) comprises a universal ball.

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