Threaded cluster frame structure for fixing battery pack and battery cluster

Abstract

The utility model provides a screw joint cluster frame structure for fixing a battery pack and a battery cluster, and belongs to the technical field of new energy batteries. Comprising a stand column set and a bracket, the stand column set comprises a plurality of stand columns arranged in the vertical direction, the stand columns are arranged in parallel at intervals in the horizontal direction, and first bolt holes are evenly formed in the stand columns at intervals in the length direction. The bracket comprises a connecting plate and a supporting plate which are vertically connected, the connecting plate is arranged on the multiple stand columns in a crossing mode in the horizontal direction, second bolt holes matched with the first bolt holes in the multiple stand columns are formed in the connecting plate, and the stand columns are in bolt connection with the connecting plate through the first bolt holes and the second bolt holes. Limiting pieces are arranged on the side faces, away from the stand columns, of the connecting plates in a protruding mode and are parallel to the supporting plates at intervals. The technical problem that in the prior art, a cluster frame in an energy storage container is difficult to cluster a battery pack and a plug-in box thereof due to connecting structure defects can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy battery technical field especially relates to a screwing cluster frame structure for battery pack fixation. BACKGROUND

[0002] Lithium ion battery as one of the current mainstream energy storage devices, because of its green environmental protection, high energy density, low self-discharge, long cycle life and many advantages, has been widely used in communication and electronic devices, energy storage power station, new energy vehicles and other fields.

[0003] In the current energy storage container and power station industry, when assembling the container, the battery plug-in box containing lithium ion battery packs needs to be installed on the cluster frame according to the design of the cluster. In the related art, the cluster frame of the energy storage container mainly adopts the way of fixing the L-shaped bracket of the plug-in box to the upright column by welding, so as to place the battery pack on the L-shaped bracket, and there are bolt holes in the front end of the L-shaped bracket to screw and fix the front end of the battery pack, and there are butterfly type limiting devices in the tail end of the L-shaped bracket to limit the up and down of the tail end of the battery pack, so as to fix the battery pack by the above two limiting ways.

[0004] The conventional cluster frame in the related art is usually fixed and connected with the L-shaped bracket on both sides to the upright column by manual welding when manufacturing, which has the risk of inaccurate positioning due to human factors, resulting in large size deviation of the cluster frame up and down. And the thickness of the L-shaped bracket on the cluster frame is generally 3mm, which is welded to the upright column, in order to ensure the strength, the length of the weld is large, which causes the L-shaped bracket to be severely deformed, and the above defects will cause the battery pack to be unable to enter the cluster normally. UTILITY MODEL CONTENTS

[0005] The utility model embodiment provides a screwing cluster frame structure and battery cluster for battery pack fixation, which can solve the technical problem of the existing technology that the cluster frame in the energy storage container causes the battery pack and its plug-in box to be difficult to enter the cluster due to the defects of the connecting structure. The technical solution is as follows:

[0006] In the first aspect, the utility model embodiment provides a screwing cluster frame structure for battery pack fixation, which comprises an upright column group, comprising a plurality of upright columns arranged in the vertical direction, and a plurality of upright columns are arranged in parallel and spaced apart in the horizontal direction, and a plurality of first bolt holes are uniformly arranged on the upright column along the length direction.

[0007] The bracket comprises vertically connected connecting plates and a supporting plate, the connecting plates are arranged on a plurality of the columns in a horizontal direction, the connecting plates are provided with second bolt holes matched with the first bolt holes on the plurality of the columns, the columns and the connecting plates are bolted through the first bolt holes and the second bolt holes, and a limiting piece is protrusively arranged on a side of the connecting plate away from the column, and the limiting piece is arranged in parallel and at intervals with the supporting plate.

[0008] Optionally, a pull rivet nut is riveted on the first bolt hole, and a flat head of the pull rivet nut is arranged on a side of the column close to the connecting plate.

[0009] Optionally, a rubber gasket is arranged around the first bolt hole on a side of the column close to the connecting plate.

[0010] Optionally, in a length direction of the column, the first bolt holes are arranged in groups at intervals, and each group of the first bolt holes comprises a plurality of the first bolt holes arranged at intervals in a horizontal direction.

[0011] Optionally, the connecting plate and the supporting plate are strip-shaped plates extending in a horizontal direction, a third bolt hole is arranged on one end of the supporting plate in a length direction, a limiting plate is arranged on the other end of the supporting plate in the length direction, the limiting plate is simultaneously connected with the connecting plate and the supporting plate in a vertical direction, and a limiting hole is arranged on the limiting plate.

[0012] Optionally, the third bolt hole and the limiting hole are both waist-shaped holes, and the extension directions are perpendicular to the length direction of the supporting plate.

[0013] Optionally, an inclined section is arranged on a side of the limiting piece close to the third bolt hole, and the distance between the inclined section and the supporting plate gradually increases in a direction close to the third bolt hole.

[0014] Optionally, a reinforcing beam is further arranged on a bottom of the supporting plate and abuts against the column, reinforcing ribs connected with the supporting plate are arranged on both ends of the reinforcing beam, a fourth bolt hole is arranged on the reinforcing beam, and the distance between the fourth bolt hole and the second bolt hole in a vertical direction is the same as the distance between adjacent first bolt holes arranged in a length direction on the column.

[0015] Optionally, the reinforcing beam and the supporting plate are detachably connected.

[0016] In a second aspect, the utility model embodiment further provides a battery cluster, including a plurality of the screw connection cluster frame structure for battery pack fixed as preceding first aspect still, still include battery plug -in box, install battery pack on the battery plug -in box, a plurality of the screw connection cluster frame structure for battery pack fixed is arranged along horizontal direction interval, and form installation slot through the opposite arrangement of the bracket, the battery plug -in box is inserted in the installation slot.

[0017] The technical scheme provided by the utility model embodiment has at least the following beneficial effects:

[0018] The screw connection cluster frame structure for battery pack fixation provided by the utility model embodiment is arranged along the cluster direction of the battery pack, and a plurality of stand columns are arranged to form a stand column group, a support structure in the longitudinal direction is formed, and the bracket is arranged horizontally along the cluster direction and is connected between the plurality of stand columns to form a cluster frame structure. The bracket is fixed by screwing the second bolt hole on the connecting plate with the first bolt hole on the plurality of stand columns, and a lifting structure in the horizontal direction is formed by the supporting plate to support the cluster battery pack and the plug-in box. Compared with the manual positioning and welding method, the prefabrication of the stand column and the bracket bolt hole by laser drilling can effectively ensure the consistency of the final fixed position of the L-shaped bracket on the stand column, avoid the large deviation during manual positioning and welding, and cause the uneven position of the bracket on the stand column, and affect the cluster of the battery pack. At the same time, the screw fixation method avoids the deformation of the bracket when connected with the plurality of stand columns by the traditional welding method due to the large welding seam area, and ensures the flatness. The technical problem of the cluster frame in the energy storage container in the prior art is solved, and the cluster difficulty of the battery pack and the plug-in box is solved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the utility model embodiment, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 It is the overall structure schematic diagram of the screw connection cluster frame structure for battery pack fixation provided by the utility model embodiment;

[0021] Figure 2 It is the structure schematic diagram of the stand column provided by the utility model embodiment;

[0022] Figure 3 It is the structure schematic diagram of the bracket provided by the utility model embodiment;

[0023] Figure 4It is the structural schematic diagram of the reinforcing beam and the reinforcing rib provided by the embodiment of the utility model;

[0024] Figure 5 It is the mounting structure explosion view of the column group and the bracket provided by the embodiment of the utility model;

[0025] Figure 6 It is the rear structure schematic diagram of the battery plug-in box and the battery pack provided by the embodiment of the utility model;

[0026] Figure 7 It is the front structure schematic diagram of the screw cluster frame structure in the battery pack cluster provided by the embodiment of the utility model.

[0027] In the drawing: 1 - column; 2 - bracket; 2a - installation slot; 3 - pull rivet nut; 4 - rubber gasket; 5 - plug-in box; 11 - first bolt hole; 21 - connecting plate; 22 - supporting plate; 23 - reinforcing beam; 24 - reinforcing rib; 51 - battery pack; 52 - bolt structure; 211 - second bolt hole; 212 - limiting sheet; 221 - third bolt hole; 222 - limiting plate; 223 - limiting hole; 224 - plug-in hole; 231 - fourth bolt hole; 241 - plug-in protrusion; 2121 - inclined section. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the utility model more clear, the following will make further detailed description to the utility model embodiment combined with the drawings.

[0029] Figure 1 It is the whole structure schematic diagram of the screw cluster frame structure for fixing battery pack provided by the embodiment of the utility model; Figure 2 It is the structure schematic diagram of the column provided by the embodiment of the utility model;

[0030] Figure 3 It is the structure schematic diagram of the bracket provided by the embodiment of the utility model; Figure 4 It is the structure schematic diagram of the reinforcing beam and the reinforcing rib provided by the embodiment of the utility model; Figure 5 It is the mounting structure explosion view of the column group and the bracket provided by the embodiment of the utility model; Figure 6 It is the rear structure schematic diagram of the battery plug-in box and the battery pack provided by the embodiment of the utility model; Figure 7 It is the front structure schematic diagram of the screw cluster frame structure in the battery pack cluster provided by the embodiment of the utility model. Figures 1 to 7 As shown in the drawing, the utility model embodiment provides a kind of screw cluster frame structure for fixing battery pack, including column group and bracket 2. Among them, column includes multiple column 1 along vertical direction arrangement, multiple column 1 is arranged along horizontal direction parallel interval, and first bolt hole 11 is uniformly spaced in length direction on column 1.

[0031] The bracket 2 comprises a connecting plate 21 and a supporting plate 22 connected vertically, the connecting plate 21 is arranged on the plurality of columns 1 in the horizontal direction. The connecting plate 21 is provided with a second bolt hole 211 matched with the first bolt hole 11 on the plurality of columns 1, and the column 1 and the connecting plate 21 are bolted through the first bolt hole 11 and the second bolt hole 211. The side of the connecting plate 21 away from the column 1 is provided with a limiting piece 212 protruding, and the limiting piece 212 is arranged in parallel and spaced apart with the supporting plate 22.

[0032] In the embodiment of the utility model, the screw connection cluster frame structure is arranged in the container along the direction of the battery pack into the cluster, and a plurality of columns 1 are arranged to form a column group, thereby forming a support structure in the longitudinal direction. When assembling, the bracket 2 is formed as an "L" shaped bracket structure by the vertically connected connecting plate 21 and the supporting plate 22, and the connecting plate 21 and the supporting plate 22 are both strip-shaped plates extending in the horizontal direction, wherein the connecting plate 21 is parallel to the side plane of the plurality of columns 1, and the connecting plate 21 and the supporting plate 22 are arranged transversely along the direction of the battery pack into the cluster and span the column group formed by the plurality of columns 1. A plurality of second bolt holes 211 are arranged on the connecting plate 21 along the length direction thereof, and after being arranged in place, the second bolt holes 211 correspond one by one to the first bolt holes 11 of the same height on the plurality of columns 1, and are fixedly connected by a downward bolt, thereby fixing and mounting the supporting plate 22 on the column group. A plurality of first bolt holes 11 are arranged on each column 1 in the vertical direction, and a plurality of brackets 2 can be connected and mounted on the column group in the vertical direction according to a preset or required spacing. In actual use, a plurality of column groups are arranged horizontally and at intervals in the energy storage container, and a plurality of brackets 2 are arranged on both sides of each column group. The brackets 2 arranged oppositely between the two adjacent column groups form mounting slots 2a by the supporting plates 22 thereof. After the battery pack 51 is supported by the insertion box 5, the battery pack 51 can be inserted into the mounting slots 2a from one side of the energy storage container, and the two sides of the insertion box 5 are supported and mounted by the oppositely arranged brackets 2. The limiting pieces 212 arranged at intervals on the connecting plate 21 parallel to the supporting plate 22 can limit the height direction of the battery pack 51, thereby preventing the battery pack 51 from tilting or rising upward during the mounting process, and ensuring that the battery pack 51 is mounted in the cluster in a standard posture. For example, a plurality of limiting pieces 212 can be arranged at intervals along the length direction of the connecting plate 21. Further, the rear part of the insertion box 5 is usually provided with a corresponding bolt structure 52, and the front end is provided with a corresponding screw hole. Correspondingly, the supporting plate 22 on the bracket 2 is provided with a third bolt hole 221 at one end thereof in the length direction, and is provided with a limiting plate 222 at the other end thereof in the length direction, the limiting plate 222 is vertically connected with the connecting plate 21 and the supporting plate 22, and the limiting plate 222 is provided with a limiting hole 223. After the bracket 2 is mounted in place, the limiting plate 222 is located on the inner side in the direction of the cluster, and after the insertion box 5 is mounted in place, the rear part thereof abuts against the limiting plate 222, and the bolt structure 52 is inserted into the limiting hole 223 to realize positioning. The screw hole of the front end of the insertion box 5 is located above the third bolt hole 221, and the insertion box 5 and the screw connection cluster frame structure are fixedly connected by a downward bolt, thereby completing the mounting of the battery pack 51 in the cluster.

[0033] The screwing cluster frame structure for fixing the battery pack provided by the utility model is characterized in that a plurality of stand columns 1 are arranged at intervals along the cluster-entering direction of the battery pack to form a stand column group, thereby forming a support structure in the longitudinal direction, and a bracket 2 is arranged horizontally along the cluster-entering direction and is connected across the plurality of stand columns 1, thereby forming a cluster frame structure. The bracket 2 is fixed by screwing the second bolt hole 211 on the connecting plate 21 and the first bolt hole 11 on the plurality of stand columns 1, and a horizontal lifting structure is formed by the supporting plate 22, thereby achieving the support of the cluster-entering battery pack and the plug-in box. Compared with the manual positioning and welding method, the prefabrication of the bolt holes in the stand column 1 and the bracket 2 by means of laser drilling can effectively ensure the consistency of the final fixing position of the L-shaped bracket 2 on the stand column 1, thereby avoiding the large deviation during manual positioning and welding, which leads to the uneven position of the bracket 2 on the stand column and affects the cluster entering of the battery pack. Meanwhile, the screwing fixing method is adopted, so that the installation and connection are convenient, the deformation of the bracket 2 caused by the large welding seam area during the connection with the plurality of stand columns 1 in the traditional welding form is avoided, and the flatness is ensured. The technical problem of the difficulty in the cluster entering of the battery pack and the plug-in box caused by the connection structure defects of the cluster frame in the energy storage container in the prior art is solved.

[0034] Optionally, a pull rivet nut 3 is riveted on the first bolt hole 11, and the flat head of the pull rivet nut 3 is arranged on the side of the stand column 1 close to the connecting plate 21. In the utility model embodiment, the M10 outer hexagonal pull rivet nut 3 is pre-riveted at the first bolt hole 11 on the stand column 1, the screw rod is lowered by the rivet gun through the second bolt hole 211 after the connecting plate 21 of the bracket 2 is arranged in place, the pull rivet nut 3 is longitudinally compressed by pulling, the riveting is completed by the protruding deformation of the other end of the first bolt hole 11, and the structure is simple, the installation is fast and convenient.

[0035] Optionally, a rubber gasket 4 is arranged on the side of the stand column 1 close to the connecting plate 21, and the rubber gasket 4 is arranged around the first bolt hole 11. In the utility model embodiment, the pull rivet nut 3 is arranged at the first bolt hole 11 to connect the bracket 2, the flat head of the pull rivet nut 3 forms a boss with a thickness of about 1.8 mm on the side of the stand column 1 close to the connecting plate 21, a layer of small foot gasket 4 is arranged around the boss, the contact area between the connecting plate 21 of the bracket 2 and the flat head of the pull rivet nut 3 and the side of the stand column 1 close to the connecting plate 21 is increased, the stress mode is plane stress, the deformation of the connecting plate 21 after fastening is relieved, the buffer effect during transportation or use is achieved at the contact position, and the overall service life is improved.

[0036] Optionally, in the length direction of the column 1, the first bolt holes 11 are arranged in groups, and each group of the first bolt holes 11 comprises a plurality of first bolt holes 11 arranged in the horizontal direction. For example, in the embodiment of the utility model, in the length direction, two first bolt holes 11 are arranged in the horizontal direction on each height section of the column 1, and the plurality of first bolt holes 11 are arranged to improve the connection points between the single column 1 and the bracket 2, and further improve the connection stability.

[0037] Optionally, the third bolt hole 221 and the limiting hole 223 are both waist-shaped holes, and the extension direction is perpendicular to the length direction of the supporting plate 22. For example, in the embodiment of the utility model, the third bolt hole 221 and the limiting hole 223 are both waist-shaped holes with a certain length in the horizontal direction, and the certain adjustment allowance is left for the bolt insertion and the positioning pin insertion when the two positions are positioned and connected with the plug-in box 5, so as to improve the installation smoothness.

[0038] Optionally, the limiting piece 212 is provided with an inclined section 2121 on the side close to the third bolt hole 221, and the distance between the inclined section 2121 and the supporting plate 22 gradually increases in the direction close to the third bolt hole 221. For example, in the embodiment of the utility model, in the process of entering the cluster and passing under the limiting piece 212, the inclined inclined section 2121 can be limited and guided by the top of the plug-in box 5, even if there is a certain warping and unevenness in the process of entering the cluster, the top of the plug-in box 5 can also be smoothly guided back to the flatness under the inclined section 2121, and the limiting piece 212 is limited in the height direction, the interference is reduced, and the stability and smoothness of entering the cluster are ensured.

[0039] Optionally, the reinforcing beam 23 is arranged at the bottom of the supporting plate 22 and abuts against the column 1, both ends of the reinforcing beam 23 are provided with reinforcing ribs 24 connected with the supporting plate 22, and a fourth bolt hole 231 is arranged on the reinforcing beam 23, the spacing between the fourth bolt hole 231 and the second bolt hole 211 in the vertical direction is the same as the spacing between the adjacent first bolt hole 11 arranged along the length direction on the column 1. In the embodiment of the utility model, the reinforcing beam 23 is arranged at the bottom of the supporting plate 22 and is also fixedly connected with the column 1 through bolts, the supporting strength of the bottom of the supporting plate 22 can be improved by the reinforcing ribs 24 at both ends of the reinforcing beam 23, and the overall mechanical strength of the bracket 2 is further improved. Meanwhile, the reinforcing beam 23 and the reinforcing rib 24 are independent structural members from the supporting plate 22 during assembly, the supporting plate 22 is provided with corresponding plug-in holes 224, and the top of the reinforcing rib 24 is provided with plug-in protrusions 241 matched with the plug-in holes 224. During assembly, the plug-in protrusions 241 at the top of the reinforcing rib 24 are first inserted into the plug-in holes 224 at the bottom of the supporting plate 22 for pre-assembly, and then the reinforcing rib 24 is connected with the column 1 through bolts together with the connecting plate 21, so that the structure is simple, the installation is convenient, and the split detachable setting form is adopted, so that manufacturing and replacement maintenance are facilitated.

[0040] The utility model discloses an embodiment further provides a kind of battery cluster, including multiple as Figures 1 to 7 The utility model discloses an embodiment further provides a kind of battery cluster, including multiple as Compared with the manual positioning and welding mode, the pre-fabrication of the bolt holes of the column 1 and the bracket 2 by laser drilling can effectively ensure the consistency of the final fixed position of the L-shaped bracket 2 on the column 1, avoid the large deviation during manual positioning and welding, so that the position of the bracket 2 on the column is uneven, and affect the battery pack cluster. Meanwhile, the fixed mode of screwing is adopted, so that installation and connection are convenient, avoid the deformation of the bracket 2 when connected with multiple columns 1 by traditional welding form due to the large welding seam area, and ensure the flatness. The technical problem that the cluster frame in the energy storage container is difficult to enter the cluster with the battery pack and its plug-in box due to the connection structure defect in the prior art is solved.

[0041] Unless otherwise defined, technical terms or scientific terms used herein shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terms "first", "second", and similar terms as used herein do not denote any order, quantity, or importance, but are used to distinguish one element from another, and the terms "one" or "the" does not denote a limitation of quantity but denotes the existence of at least one. The terms "comprising", "including", "containing", and similar terms are not used in a restrictive sense and are used to mean that the stated elements or objects are present. The terms "connected", "coupled", and similar terms are not used in a limiting sense and are used to mean that one has a logical or physical link to the other. The terms "upper", "lower", "left", "right", and the like are used only to denote relative positions and can change accordingly when the absolute positions of the described objects change.

[0042] The above description is only some optional embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A bolt cluster structure for securing a battery pack, characterized by, The utility model relates to a kind of column group, including multiple columns (1) being arranged in vertical direction, multiple the column (1) is arranged in parallel spaced apart in horizontal direction, and first bolt hole (11) is uniformly spaced on the column (1) in length direction; Bracket (2), including vertically connected connecting plate (21) and support plate (22), the connecting plate (21) is arranged on multiple the column (1) in horizontal direction, the connecting plate (21) is provided with second bolt hole (211) matched with the first bolt hole (11) on multiple the column (1), the column (1) is bolted with the connecting plate (21) by the first bolt hole (11) and the second bolt hole (211), the side face of the connecting plate (21) away from the column (1) is protrudedly provided with limiting sheet (212), and the limiting sheet (212) is arranged in parallel spaced apart with the support plate (22). The first bolt hole (11) is riveted with pull-rivet nut (3), and the flat head of the pull-rivet nut (3) is arranged on the side of the column (1) close to the connecting plate (21).

2. The bolt cluster structure for securing a battery pack according to claim 1, wherein The side of the column (1) close to the connecting plate (21) is attached with rubber gasket (4), and the rubber gasket (4) is arranged around the first bolt hole (11).

3. The threaded cluster mount structure for battery pack fixation of claim 2, wherein, In the length direction of the column (1), the first bolt hole (11) is arranged in groups, and each group of the first bolt hole (11) includes a plurality of first bolt holes (11) arranged in horizontal direction.

4. The threaded cluster mount structure for battery pack fixation of claim 1, wherein, The connecting plate (21) and the support plate (22) are strip-shaped plates extending in horizontal direction, one end of the support plate (22) in length direction is provided with third bolt hole (221), the other end of the support plate (22) in length direction is provided with limiting plate (222), the limiting plate (222) is vertically connected with the connecting plate (21) and the support plate (22) at the same time, and the limiting plate (222) is provided with limiting hole (223).

5. The threaded cluster mount structure for battery pack fixation of claim 1, wherein, The third bolt hole (221) and the limiting hole (223) are both waist-shaped holes, and the extension direction is perpendicular to the length direction of the support plate (22).

6. The threaded cluster mount structure for battery pack fixation of claim 5, wherein, The side of the limiting sheet (212) close to the third bolt hole (221) is provided with inclined section (2121), and the distance between the inclined section (2121) and the support plate (22) gradually increases in the direction close to the third bolt hole (221).

7. The threaded cluster mount structure for battery pack fixation of claim 5, wherein, It also includes a reinforcing beam (23), which is arranged at the bottom of the support plate (22) and abuts against the column (1), the reinforcing beam (23) is provided with reinforcing rib (24) connected with the support plate (22) at both ends, the reinforcing beam (23) is provided with fourth bolt hole (231), and the distance between the fourth bolt hole (231) and the second bolt hole (211) in vertical direction is the same as the distance between adjacent first bolt holes (11) arranged in length direction on the column (1).

8. The threaded cluster mount structure for battery pack fixation of claim 1, wherein, The reinforcing beam (23) and the support plate (22) are detachably connected.

9. The threaded cluster mount structure for battery pack fixation of claim 8, wherein, ​ 10. A battery cluster comprising a plurality of threaded cluster holder structures for securing battery packs as claimed in any one of claims 1 to 9, characterized in that, Also included is a battery plug-in box (5) on which a battery pack (51) is mounted, a plurality of screwing cluster rack structures for fixing the battery pack are arranged in a horizontal direction at intervals, and an installation slot (2a) is formed by the opposite arrangement of the bracket (2), and the battery plug-in box (5) is plugged into the installation slot (2a).

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