CN111421037A

CN111421037A - Aluminum battery shell slot rolling device

Info

Publication number: CN111421037A
Application number: CN202010226250.2A
Authority: CN
Inventors: 黄进德; 杨国友; 高曰兵
Original assignee: Jiangsu Core Circles Amperex Technology Co ltd
Current assignee: Rizhao Huifeng Energy Storage Technology Co ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-07-17

Abstract

The invention provides an aluminum battery shell groove rolling device which comprises a clamping part, a support and groove-shaped male die rollers, wherein a battery shell to be rolled is clamped on the clamping part, the groove-shaped male die rollers are rotatably installed on the support, the support is movably arranged on a fixed rack through a longitudinal driving mechanism, the longitudinal driving mechanism can drive the groove-shaped male die rollers to move towards the battery shell and roll grooves on the battery shell, positioning rings on two sides of the battery shell are driven to gradually approach along the axial direction by driving an axial cam to rotate, meanwhile, the longitudinal driving mechanism drives the groove-shaped male die rollers to move towards the battery shell and roll grooves on the battery shell, so that the battery shell is deformed like bending, bent materials are inwards concave under the pushing of the groove-shaped male die rollers to form groove shapes, and the problem of shell material breakage is solved.

Description

Aluminum battery shell slot rolling device

Technical Field

The invention relates to the field of lithium ion storage batteries, in particular to an aluminum battery shell groove rolling device.

Background

The shell of the traditional lithium ion battery is punched by a steel plate. The cylindrical power battery has high power and large energy. Joule heat generated by each node of the internal circuit of the battery and heat generated by discharge must be rapidly dissipated during the operation of the battery, so as to reduce the risk of thermal runaway. Therefore, the battery case is made of aluminum material with thermal conductivity four times higher than that of steel. In addition, in order to simplify the assembly process of the battery and improve the sealing property of the battery, the battery design adopts a sealing technology of crimping and compressing a battery shell. The seal is rolled out in a steel shell-like, desirably grooved form on the outer circumferential surface of the housing to form a step in the wall of the interior chamber of the housing.

The use of a crimp compression seal requires rolling a groove of a size and shape around the circumference of the housing to form a step in the inner diameter. The step is used for axially positioning the battery cover and bearing the pressure of axially compressing and sealing the battery cover, and is a key part for using the crimping compression of the aluminum-shell battery.

The rolling groove of the steel battery case is that the opening part of the battery is placed on a rotating shaft, a groove-shaped male die roller wheel which is vertical to the central line of the case is arranged outside the circumference of the case after positioning for radial feeding, and the groove-shaped male die is pricked into the case to a certain size. Because the tensile strength of the steel is high, the male die can bring the material into the groove shape during feeding to form the groove shape as a step, and the shell cannot be broken.

When the aluminum shell is rolled in the above-described manner, the aluminum is only 1/4 made of steel because of its low tensile strength, and the aluminum is easily broken when the material is drawn into the shape of the groove, resulting in breakage of the shell.

Disclosure of Invention

The invention provides a rolling groove device for an aluminum battery shell, which aims to solve the technical problem that the tensile strength of aluminum is only 1/4 steel, and the rolling groove on the aluminum shell can be broken at the rolling groove by using the conventional rolling groove machine.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an aluminium battery shell channelling device, includes clamping part, support and cell type terrace die gyro wheel, the centre gripping remains the battery case of channelling on the clamping part, cell type terrace die gyro wheel rotates to be installed on the support, the support sets up in fixed frame through vertical actuating mechanism activity, vertical actuating mechanism can drive cell type terrace die gyro wheel to battery case removes and is in the last channelling of battery case.

Further: the clamping part comprises two positioning rings, the two positioning rings are arranged on the left side and the right side of the battery shell respectively, the two ends of the battery shell are sleeved on the positioning rings, and the two positioning rings are a first positioning ring and a second positioning ring respectively.

Further: the clamping part further comprises a transverse guide rail, a first sliding block, a second sliding block and an axial cam, the axial cam is transversely arranged on the rack along the horizontal direction and can rotate on the rack, one end of the axial cam is fixedly connected with a driving shaft, the transverse guide rail is arranged on the rack and is parallel to the axial cam, the first sliding block and the second sliding block are both arranged on the transverse guide rail and can move along the transverse guide rail, a first positioning ring is rotatably arranged on the first sliding block, a second positioning ring is rotatably arranged on the second sliding block, a curved groove is arranged on the wheel wall of the axial cam and is circumferentially arranged, the ring walls of the first positioning ring and the second positioning ring are both arranged in the curved groove, and the axial cam can drive the ring walls of the first positioning ring and the second positioning ring to axially move along the curved groove, and then the first positioning ring and the second positioning ring are driven to move towards opposite directions.

Further: the groove rolling device further comprises a second motor, the second motor is fixedly arranged on the second sliding block, an output shaft of the second motor is fixedly connected with the second positioning ring and is parallel to the transverse guide rail, and the output shaft of the second motor can drive the second positioning ring to rotate.

Further: the longitudinal driving mechanism comprises a longitudinal guide rail, a longitudinal lead screw, a longitudinal sliding block and a longitudinal driving motor, the longitudinal guide rail is arranged on the rack along the horizontal direction and is perpendicular to the transverse guide rail, the longitudinal lead screw is rotatably arranged on the rack and is parallel to the longitudinal guide rail, the longitudinal sliding block is arranged on the longitudinal lead screw and is fixedly connected with the support, the longitudinal lead screw rotates to drive the longitudinal sliding block to move along the longitudinal guide rail, so that the groove-shaped male die roller is driven to move towards the battery shell, the longitudinal driving motor is fixedly arranged on the rack, and an output shaft of the longitudinal driving motor is fixedly connected with the longitudinal lead screw.

The aluminum battery shell groove rolling device has the beneficial effects that the axial cam is driven to rotate, the positioning rings on two sides of the battery shell are driven to gradually approach along the axial direction, meanwhile, the longitudinal driving mechanism drives the groove-shaped male die roller to move towards the battery shell and roll the groove on the battery shell, so that the battery shell is deformed like bending, the bent material is inwards concave under the pushing of the groove-shaped male die roller to form a groove shape, and the problem of breakage of the shell material is further solved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural diagram of an aluminum battery case channeling device according to the present invention;

FIG. 2 is a schematic structural view before channeling;

fig. 3 is a schematic view of the structure after the roll groove.

In the figure, the device comprises a bracket 1, a bracket 2, a groove-shaped male die roller 3, a battery shell 4, a positioning ring 5, a first positioning ring 6, a second positioning ring 7, a transverse guide rail 8, a first sliding block 9, a second sliding block 10, an axial cam 11, a driving shaft 12, a curved groove 13, a second motor 14, a longitudinal guide rail 15, a longitudinal lead screw 16, a longitudinal sliding block 17 and a longitudinal driving motor.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.

As shown in fig. 1, 2 and 3, the invention provides an aluminum battery case channeling device, which comprises a clamping part, a bracket 1 and a grooved male die roller 2, wherein a battery case 3 to be channeled is clamped on the clamping part, the grooved male die roller 2 is rotatably mounted on the bracket 1, the bracket 1 is movably arranged on a fixed rack through a longitudinal driving mechanism, and the longitudinal driving mechanism can drive the grooved male die roller 2 to move towards the battery case 3 and to channel on the battery case 3.

The clamping part comprises two positioning rings 4, the two positioning rings 4 are arranged on the left side and the right side of the battery shell 3 respectively, the two ends of the battery shell 3 are sleeved on the positioning rings 4, and the two positioning rings 4 are a first positioning ring 5 and a second positioning ring 6 respectively.

The clamping part further comprises a transverse guide rail 7, a first sliding block 8, a second sliding block 9 and an axial cam 10, the axial cam 10 is transversely arranged on the rack along the horizontal direction and can rotate on the rack, one end of the axial cam 10 is fixedly connected with a driving shaft 11, the transverse guide rail 7 is arranged on the rack and is parallel to the axial cam 10, the first sliding block 8 and the second sliding block 9 are both arranged on the transverse guide rail 7 and can move along the transverse guide rail 7, the first positioning ring 5 is rotatably arranged on the first sliding block 8, the second positioning ring 6 is rotatably arranged on the second sliding block 9, a curved groove 12 is arranged on the wheel wall of the axial cam 10, the curved groove 12 is circumferentially arranged, and the ring walls of the first positioning ring 5 and the second positioning ring 6 are both arranged in the curved groove 12, the axial cam 10 can drive the annular walls of the first positioning ring 5 and the second positioning ring 6 to axially move along the curved groove 12, so as to drive the first positioning ring 5 and the second positioning ring 6 to move in opposite directions.

The channeling device further comprises a second motor 13, the second motor 13 is fixedly arranged on the second sliding block 9, an output shaft of the second motor 13 is fixedly connected with the second positioning ring 6 and is parallel to the transverse guide rail 7, and the output shaft of the second motor 13 rotates to drive the second positioning ring 6 to rotate.

The groove-shaped male die roller 2 is a product in the prior art, and the groove-shaped male dies at the edge of the roller are driven to roll through the rolling of the roller. During operation, the battery shell 3 is sleeved on the positioning ring 4, the driving shaft 11 drives the axial cam 10 to rotate, the positioning rings 4 on two sides of the battery shell 3 are driven to gradually approach along the axial direction, meanwhile, the longitudinal driving mechanism drives the groove-shaped male die roller 2 to the battery shell 3 to move and roll grooves on the battery shell 3, the battery shell 3 is enabled to generate deformation similar to bending, the bent material is inwards concave under the pushing of the groove-shaped male die roller 2 to form a groove shape, and therefore the shell material is prevented from being broken.

The longitudinal driving mechanism comprises a longitudinal guide rail 14, a longitudinal lead screw 15, a longitudinal sliding block 16 and a longitudinal driving motor 17, wherein the longitudinal guide rail 14 is arranged on the rack along the horizontal direction and is perpendicular to the transverse guide rail 7, the longitudinal lead screw 15 is rotatably arranged on the rack and is parallel to the longitudinal guide rail 14, the longitudinal sliding block 16 is arranged on the longitudinal lead screw 15 and is fixedly connected with the bracket 1, the longitudinal lead screw 15 rotates to drive the longitudinal sliding block 16 to move along the longitudinal guide rail 14, so that the groove-shaped male die roller 2 is driven to move towards the battery shell 3, the longitudinal driving motor 17 is fixedly arranged on the rack, and an output shaft of the longitudinal driving motor 17 is fixedly connected with the longitudinal lead screw 15.

The transmission structure of the screw rod sliding block is stable and reliable, the moving parameters of the longitudinal sliding block 16 can be accurately controlled by controlling the rotation quantity of the longitudinal driving motor 17, the feeding quantity of the groove-shaped male die roller 2 is further controlled, the screw pitch adjusted by the transmission structure is small, and the accuracy of the rolling groove can be guaranteed.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic representation of the term does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides an aluminium battery shell channelling device which characterized in that: including clamping part, support (1) and cell type terrace die gyro wheel (2), the centre gripping remains battery case (3) of channeling on the clamping part, cell type terrace die gyro wheel (2) rotate to be installed on support (1), support (1) sets up in fixed frame through vertical actuating mechanism activity, vertical actuating mechanism can drive cell type terrace die gyro wheel (2) to battery case (3) remove and are in channeling on battery case (3).

2. The aluminum battery case channeling device of claim 1, wherein: the clamping part comprises two positioning rings (4), two the positioning rings (4) are arranged on the left side and the right side of the battery shell (3) respectively, the two ends of the battery shell (3) are sleeved on the positioning rings (4), and the two positioning rings (4) are a first positioning ring (5) and a second positioning ring (6) respectively.

3. The aluminum battery case channeling device of claim 2, wherein: the clamping part further comprises a transverse guide rail (7), a first sliding block (8), a second sliding block (9) and an axial cam (10), the axial cam (10) is transversely arranged on the rack along the horizontal direction and can rotate on the rack, one end of the axial cam (10) is fixedly connected with a driving shaft (11), the transverse guide rail (7) is arranged on the rack and is parallel to the axial cam (10), the first sliding block (8) and the second sliding block (9) are arranged on the transverse guide rail (7) and can move along the transverse guide rail (7), a first positioning ring (5) is rotatably arranged on the first sliding block (8), a second positioning ring (6) is rotatably arranged on the second sliding block (9), a curved groove (12) is formed in the wheel wall of the axial cam (10), and the curved groove (12) is arranged along the circumferential direction, first holding ring (5) with the rampart of second holding ring (6) all sets up in curved groove (12), axial cam (10) rotation energy drive first holding ring (5) with the rampart of second holding ring (6) is followed curved groove (12) axial displacement, and then drive first holding ring (5) with second holding ring (6) remove towards opposite direction.

4. An aluminum battery case channeling device as recited in claim 3, wherein: the channeling device still includes second motor (13), second motor (13) is fixed to be set up on second slider (9), the output shaft of second motor (13) with second holding ring (6) fixed connection, and be on a parallel with transverse guide (7) set up, the output shaft of second motor (13) rotates and can drive second holding ring (6) rotate.

5. The aluminum battery case channeling device of claim 1, wherein: the longitudinal driving mechanism comprises a longitudinal guide rail (14), a longitudinal lead screw (15), a longitudinal sliding block (16) and a longitudinal driving motor (17), the longitudinal guide rail (14) is arranged on the rack along the horizontal direction, and is arranged perpendicular to the transverse guide rail (7), the longitudinal screw (15) is rotatably arranged on the frame, and is arranged parallel to the longitudinal guide rail (14), the longitudinal slide block (16) is arranged on the longitudinal screw rod (15) and is fixedly connected with the bracket (1), the longitudinal lead screw (15) rotates to drive the longitudinal slide block (16) to move along the longitudinal guide rail (14), thereby driving the groove-shaped male die roller (2) to move towards the battery shell (3), the longitudinal driving motor (17) is fixedly arranged on the rack, and an output shaft of the longitudinal driving motor (17) is fixedly connected with the longitudinal lead screw (15).