Cylindrical lithium battery pack fixing tool

By designing a cylindrical lithium battery pack fixing fixture with lifting electric push rods and clamping push components, the problem of uneven force when removing the battery pack after welding was solved, enabling flexible placement and removal of the battery pack, and improving applicability and safety.

CN224053327UActive Publication Date: 2026-03-27JIANGXI ZHUPAI NEW ENERGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-06
Publication Date
2026-03-27

AI Technical Summary

Technical Problem

In the fixture for fixing cylindrical lithium battery packs, the battery packs are welded together to form an integral structure. This makes the battery packs susceptible to large tensile or compressive forces when they are removed, resulting in uneven stress on the weld joints and eventually weld joint breakage.

Method used

A fixture comprising a lifting electric actuator, a lifting frame, a clamping and pushing assembly, and an adjusting electric actuator was designed. Through the cooperation of the lifting frame and the clamping and pushing assembly, the battery can be flexibly placed and removed. The spacing between the fixing plates is adjusted by using a buffer spring and a scissor-type variable pitch structure to reduce friction and stress on the welding points.

Benefits of technology

This improves the applicability of the battery pack, reduces frictional resistance and the risk of damage to the solder joints when removing the battery pack, and avoids burns and contamination at the solder joints.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of cylindrical lithium battery packs, and relates to a cylindrical lithium battery pack fixing tool which comprises a bottom plate, lifting electric push rods are installed at the two ends of the bottom plate, the movable ends of the lifting electric push rods are connected with a lifting frame, a second T-shaped sliding groove is formed in the lifting frame, and a plurality of sets of first T-shaped sliding blocks are connected into the second T-shaped sliding groove in a sliding mode. The lifting electric push rod is used for pushing the lifting frame to move in the direction far away from the bottom plate, so that a plurality of groups of fixing plates can be driven to be far away from each other, a worker can conveniently place batteries into the fixing plates, and meanwhile, the friction obstruction of the fixing plates to the battery packs during subsequent battery pack taking is also reduced; and meanwhile, the battery pack is pushed to continuously extend out from one end, far away from the bottom plate, of the fixing plate, so that a person can take the non-end area of the battery pack conveniently, and scalding caused by touching a welding spot area and pollution caused by hands or tools to welding spots when the person takes the battery pack are reduced.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to cylindrical lithium battery pack technical field relates to a cylindrical lithium battery pack fixed frock. BACKGROUND

[0002] Cylindrical lithium battery pack is a kind of battery pack that multiple cylindrical lithium battery monomers are combined into a whole module by specific process, and fixed frock is commonly integrated mesh frame, provides support and positioning effect to multiple batteries by multiple meshes, to facilitate subsequent welding and assembly process etc., the mesh is attached to the diameter of battery, to ensure the accurate position of battery in frame, to avoid inaccurate welding point position due to battery deviation.

[0003] When battery is welded in fixed frock, multiple batteries form a whole structure by welding process at this time, the relative movement between batteries is restricted, so that battery pack is not easy to slide in mesh like single battery, when battery pack is taken out from mesh, some parts of battery pack are easily subjected to greater tension or pressure, leading to uneven force on welding point, and further welding point fracture phenomenon occurs. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problems that when battery is welded in fixed frock, multiple batteries form a whole structure by welding process at this time, the relative movement between batteries is restricted, so that battery pack is not easy to slide in mesh like single battery, when battery pack is taken out from mesh, some parts of battery pack are easily subjected to greater tension or pressure, leading to uneven force on welding point, and further welding point fracture phenomenon occurs.

[0005] The utility model contents the cylindrical lithium battery pack fixed frock, including bottom plate, the bottom plate both ends are installed and lift electric push rod, the lift electric push rod mobile end is connected with lifting frame, the lifting frame is opened with second T shape sliding slot, the second T shape sliding slot inside is connected with multiple groups of first T shape sliding block slidingly, the first T shape sliding block is installed with adjusting push rod, the bottom plate both sides are opened with first T shape sliding slot.

[0006] Clamping and pushing assembly is installed on the bottom plate, and the clamping and pushing assembly is used in cooperation with lifting frame.

[0007] The clamping and pushing assembly comprises a second T-shaped sliding block which is slidingly connected inside the first T-shaped sliding groove, a supporting frame is fixedly connected to the second T-shaped sliding block, an adjusting plate is connected to one end of the supporting frame, sliding plates are slidingly penetrated through both ends of the adjusting plate, adjusting springs are arranged between one end of the supporting frame inside which the two sliding plates are located, mounting plates are correspondingly arranged at the ends of the two sliding plates away from the adjusting plate, and a fixed plate is arranged on the inner side of the mounting plate.

[0008] The clamping and pushing assembly further comprises a conical column and a semi-conical sleeve, the semi-conical sleeve is symmetrically fixed inside one end of the fixed plate close to the bottom plate, the conical column is fixedly connected to the end of the adjusting push rod away from the first T-shaped sliding block, the conical column is slidingly connected to the semi-conical sleeve, and a receiving frame is arranged at the end of the first T-shaped sliding block close to the inside of the bottom plate.

[0009] The clamping and pushing assembly further comprises buffer springs, the buffer springs are arranged in multiple groups, the buffer springs are equidistantly arranged around the inside of the receiving frame, and the buffer springs are connected to receiving plates at one end.

[0010] The adjusting plates are arranged in multiple groups, first rotating rods and second rotating rods are symmetrically hinged to one side of the outer wall of the adjusting plates close to the end of the bottom plate, the first rotating rods and the second rotating rods are hingedly arranged at one end, third rotating rods and fourth rotating rods are correspondingly hinged to one end of the first rotating rods and the second rotating rods away from the adjusting plates, the third rotating rods and the fourth rotating rods are hingedly arranged at the middle portions, and the middle portions of the third rotating rods and the fourth rotating rods are hingedly arranged with the outer walls of the outer walls of the other adjusting plates.

[0011] A guide frame is arranged on the bottom plate, a plurality of sliding sleeves are slidingly arranged on the guide frame, the sliding sleeves are connected to one side of the outer walls of the adjusting plates away from the first rotating rods, the second rotating rods, the third rotating rods and the fourth rotating rods, an adjusting electric push rod is arranged on the bottom plate, and the moving end of the adjusting electric push rod is connected to one group of the supporting frames close to the end of the bottom plate.

[0012] Compared with the prior art, the utility model has the advantages that the lifting electric push rod drives the lifting frame to move away from the bottom plate, which drives the multiple fixed plates to move away from each other, so that personnel can place the battery into the fixed plate, and the frictional resistance of the fixed plate to the battery pack during subsequent taking of the battery pack is reduced, and the battery pack continuously extends from the end of the fixed plate away from the bottom plate, so that personnel can take the battery pack from the non-end area, and the scalding caused by touching the welding point area and the pollution of the welding point caused by the hand or tool are reduced.

[0013] The lifting electric push rod drives the lifting frame to move towards the bottom plate, and under the elastic action of the adjusting spring, the two sliding plates pull the two fixed plates to move close to each other, so that the batteries with different diameters are clamped and fixed, and the applicability of the tooling is improved.

[0014] The shearing type variable distance structure formed by the first rotating rod, the second rotating rod, the third rotating rod and the fourth rotating rod is opened or contracted by adjusting the moving end of the electric push rod, so that the distance between each group of fixed plates is adjusted, the distance between the multiple groups of batteries is flexibly adjusted according to the welding process and the arrangement requirement of the batteries, and the applicability of the device is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme and advantages of the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings described in the following are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0016] Figure 1 is the complete structure schematic diagram of the present application.

[0017] Figure 2 is the structure schematic diagram of the present application.

[0018] Figure 3 is one of the schematic diagrams of the clamping and pushing assembly of the present application.

[0019] Figure 4 is one of the schematic diagrams of the clamping and pushing assembly of the present application.

[0020] Figure 5 is one of the schematic diagrams of the clamping and pushing assembly of the present application

[0021] Figure 6 is one of the schematic diagrams of the clamping and pushing assembly of the present application.

[0022] In the figure: 1, bottom plate; 2, lifting frame; 3, lifting electric push rod; 4, first T-shaped sliding block; 5, adjusting push rod; 6, fixed plate; 7, mounting plate; 8, sliding plate; 9, adjusting plate; 10, adjusting spring; 11, half-cone sleeve; 12, receiving frame; 13, buffer spring; 14, receiving plate; 15, supporting frame; 16, second T-shaped sliding block; 17, first T-shaped sliding groove; 18, second T-shaped sliding groove; 19, first rotating rod; 20, second rotating rod; 21, third rotating rod; 22, fourth rotating rod; 23, sliding sleeve; 24, guide frame; 25, adjusting electric push rod; 26, conical column. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present application more clear, the following will further describe the present application in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0025] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] Example 1

[0028] like Figures 1-6 As shown, a cylindrical lithium battery pack fixing fixture includes a base plate 1. Lifting electric push rods 3 are installed at both ends of the base plate 1 for pushing the battery to rise and fall. The moving end of the lifting electric push rod 3 is connected to a lifting frame 2 for lifting all batteries at once. The lifting frame 2 is provided with a second T-shaped slide groove 18. Multiple sets of first T-shaped sliders 4 are slidably connected inside the second T-shaped slide groove 18. Adjusting push rods 5 are installed on the first T-shaped sliders 4. The base plate 1 is symmetrically provided with first T-shaped slide grooves 17 on both sides.

[0029] The clamping and pushing component is mounted on the base plate 1 and is used in conjunction with the lifting frame 2.

[0030] Example 2

[0031] like Figures 1-5 As shown, the clamping and pushing assembly includes a second T-shaped slider 16, which is slidably connected inside the first T-shaped groove 17. A support frame 15 is fixedly connected to the second T-shaped slider 16. An adjusting plate 9 is connected to one end of the support frame 15. Slide plates 8 slide through both ends of the adjusting plate 9. An adjusting spring 10 is provided between the two sets of slide plates 8 located inside the support frame 15. An installation plate 7 is installed at the end of the two sets of slide plates 8 away from the adjusting plate 9. A fixing plate 6 is provided on the inner side of the installation plate 7.

[0032] like Figures 1-5 As shown, the clamping and pushing assembly also includes a conical column 26 and a semi-conical sleeve 11. The semi-conical sleeve 11 is symmetrically fixed inside the end of the fixed plate 6 near the bottom plate 1. The conical column 26 is fixed to the end of the adjusting push rod 5 away from the first T-shaped slider 4. The conical column 26 and the semi-conical sleeve 11 are slidably connected. A receiving frame 12 is installed at the end of the first T-shaped slider 4 near the inside of the bottom plate 1.

[0033] like Figure 6As shown, the clamping and pushing assembly also includes a buffer spring 13. The buffer spring 13 is arranged in multiple sets, and the multiple sets of buffer spring 13 are installed in a equidistant ring inside the receiving frame 12. One end of the buffer spring 13 is connected to the receiving plate 14.

[0034] During operation, when the battery is placed into the fixture, the lifting frame 2 is moved away from the base plate 1 by the lifting electric push rod 3. At the same time, the tapered column 26 is moved away from the base plate 1 by the adjusting push rod 5, so that the inclined surface of the tapered column 26 continuously presses against the inclined surface of the semi-conical sleeve 11. Then, the semi-conical sleeve 11 drives the two sets of fixing plates 6 to move away from each other under the guidance of the sliding plate 8 and the adjusting plate 9. At this time, the battery can be quickly put into the two sets of fixing plates 6 to increase the distance between the two sets of fixing plates 6, making it easier for personnel to place the battery into the two sets of fixing plates 6. When one end of the battery contacts the receiving plate 14, the spring of the buffer spring 13 is activated. Under the action of the force, the impact damage to the battery and the receiving plate 14 is reduced. After the placement of multiple sets of batteries, the lifting frame 2 is moved closer to the base plate 1 by the lifting electric push rod 3. At the same time, under the elastic action of the adjusting spring 10, the two sets of sliding plates 8 pull the two sets of fixing plates 6 closer to each other until the inner wall of the fixing plate 6 contacts the outer wall of the battery. The lifting electric push rod 3 is then closed. At this time, the fixing of multiple batteries is completed, and the effect of clamping and fixing batteries of different diameters is achieved to improve the applicability of this tooling. Then, the fixed batteries are welded and processed. Every two sets of fixing plates 6 constitute a set of fixing elements. Multiple sets of fixing plates 6 refer to multiple fixing elements.

[0035] When multiple batteries are welded together, they form a battery pack. At this point, the push rod 5 is used to move the conical column 26 away from the base plate 1. Through the action of the conical column 26, the semi-conical sleeve 11, and the fixing plate 6, multiple fixing plates 6 move away from the batteries. The conical column 26 drives the receiving plate 14 to push the battery pack out continuously from the end of the fixing plate 6 away from the base plate 1, so that personnel can easily pick up the non-end area of ​​the battery pack. This reduces the risk of burns caused by personnel touching the welding point area when picking up the battery pack, as well as the contamination of the welding point by hands or tools.

[0036] Example 3

[0037] like Figures 1-2 As shown, the adjustment plate 9 is arranged in multiple groups. The outer wall of the adjustment plate 9 near the end of the base plate 1 is symmetrically hinged with a first rotating rod 19 and a second rotating rod 20. One end of the first rotating rod 19 and the second rotating rod 20 are hinged together. The ends of the first rotating rod 19 and the second rotating rod 20 away from the adjustment plate 9 are respectively hinged with a third rotating rod 21 and a fourth rotating rod 22. The middle part of the third rotating rod 21 and the fourth rotating rod 22 is hinged together. The middle parts of the third rotating rod 21 and the fourth rotating rod 22 are respectively hinged to the outer wall of other groups of adjustment plates 9.

[0038] As Figures 1-2 shown, the bottom plate 1 is installed with a guide frame 24, and a plurality of slide sleeves 23 are slidably arranged on the guide frame 24, and the slide sleeves 23 are connected to the outer wall of the adjusting plate 9 away from the first rotating rod 19, the second rotating rod 20, the third rotating rod 21 and the fourth rotating rod 22, and the bottom plate 1 is installed with an adjusting electric push rod 25, and the moving end of the adjusting electric push rod 25 is connected to a set of support frames 15 close to the end of the bottom plate 1.

[0039] In operation, the moving end of the adjusting electric push rod 25 pushes a set of adjusting plates 9 close to the end of the bottom plate 1 to move, and the scissor type variable distance structure formed by the first rotating rod 19, the second rotating rod 20, the third rotating rod 21 and the fourth rotating rod 22 is expanded or contracted to drive a plurality of sets of adjusting plates 9 to move at equal distances on the guide frame 24, so as to adjust the distance between each set of fixed plates 6, so as to flexibly adjust the distance between a plurality of sets of batteries according to the welding process and the battery arrangement requirement, and further improve the applicability of the device.

[0040] The preferred embodiments disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details, nor limit the utility model to the specific embodiments described. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the entire scope and equivalents thereof.

Claims

1. A cylindrical lithium battery Pack fixing tool characterized by: Including the bottom plate (1), the bottom plate (1) both ends are equipped with lifting electric push rod (3), the lifting electric push rod (3) moving end is connected with lifting frame (2), the lifting frame (2) is equipped with second T-shaped sliding groove (18), the second T-shaped sliding groove (18) inside is slidably connected with multiple groups of first T-shaped sliding block (4), the first T-shaped sliding block (4) is equipped with adjusting push rod (5), the bottom plate (1) both sides are symmetrically equipped with first T-shaped sliding groove (17); The clamping and pushing assembly is installed on the bottom plate (1), and the clamping and pushing assembly is used in cooperation with the lifting frame (2).

2. The cylindrical lithium battery Pack fixing tool according to claim 1, characterized in that: The clamping and pushing assembly includes a second T-shaped sliding block (16), which is slidably connected inside the first T-shaped sliding groove (17). The second T-shaped sliding block (16) is fixedly connected with a support frame (15). One end of the support frame (15) is connected with an adjusting plate (9). Two ends of the adjusting plate (9) are slidably penetrated by a sliding plate (8). Two groups of sliding plates (8) are located between one end inside the support frame (15). An adjusting spring (10) is arranged between the two groups of sliding plates (8). Two groups of sliding plates (8) are correspondingly installed on one end away from the adjusting plate (9). The inner side of the mounting plate (7) is provided with a fixed plate (6).

3. The cylindrical lithium battery Pack fixing tool according to claim 2, characterized in that: The clamping and pushing assembly further includes a tapered column (26) and a semi-tapered sleeve (11). The semi-tapered sleeve (11) is symmetrically fixed inside one end of the fixed plate (6) close to the bottom plate (1). The tapered column (26) is fixedly connected to one end of the adjusting push rod (5) away from the first T-shaped sliding block (4). The tapered column (26) is slidably connected with the semi-tapered sleeve (11). One end of the first T-shaped sliding block (4) inside the bottom plate (1) is provided with a receiving frame (12).

4. The cylindrical lithium battery Pack fixing tool according to claim 3, characterized in that: The clamping and pushing assembly further includes a buffer spring (13). The buffer spring (13) is arranged in multiple groups. Multiple groups of buffer springs (13) are equally spaced and arranged inside the receiving frame (12). One end of the buffer spring (13) is connected with a receiving plate (14).

5. The cylindrical lithium battery Pack fixing tool according to claim 2, characterized in that: The adjusting plate (9) is arranged in multiple groups. The outer wall of the adjusting plate (9) close to the end of the bottom plate (1) is symmetrically hinged with a first rotating rod (19) and a second rotating rod (20). One end of the first rotating rod (19) and the second rotating rod (20) is hingedly connected. One end of the first rotating rod (19) and the second rotating rod (20) away from the adjusting plate (9) is correspondingly hingedly connected with a third rotating rod (21) and a fourth rotating rod (22). The middle part of the third rotating rod (21) and the fourth rotating rod (22) is hingedly connected. The middle part of the third rotating rod (21) and the fourth rotating rod (22) is hingedly connected with the outer wall of the other group of adjusting plates (9).

6. The cylindrical lithium battery Pack fixing tool according to claim 5, characterized in that: The bottom plate (1) is provided with a guide frame (24), a plurality of slide sleeves (23) are slidably arranged on the guide frame (24), the slide sleeve (23) is connected with the outer wall of the adjusting plate (9) away from the first rotating rod (19), the second rotating rod (20), the third rotating rod (21) and the fourth rotating rod (22), and the bottom plate (1) is provided with an adjusting electric push rod (25), and the moving end of the adjusting electric push rod (25) is connected with a group of support frames (15) close to the end of the bottom plate (1).