Patent Description:
For the sake of energy conservation and environmental protection, more and more attentions have been paid to the cascade utilization of decommissioned power batteries. However, there are few decommissioned modules that can be directly used in cascade, and most of the decommissioned modules are used in the form of single batteries, so the battery modules are usually disassembled into single batteries before being used in cascade. In order to disassemble the modules into single electrodes, an essential step is to mill off aluminum pole pieces on the modules to cut off the mechanical connection between the single electrodes, and meanwhile, to make a surface of each separated single electrode smooth for subsequent cascade utilization.

However, when a module is directly milled with a milling cutter on a milling machine, and specifically, when the milling cutter passes through a gap between cathodes and anodes of two adjacent single batteries, the milling cutter itself will electrically connect the cathodes and anodes of the two adjacent single batteries to form a short circuit between the milling cutter and the pole pieces to generate sparks, which will easily cause the milling cutter to anneal and immediately scrap, and even cause potential fire safety hazards. For the safety of the aluminum pole piece milling process, it is necessary to pretreat the pole pieces of the module, specifically, disconnect the aluminum pole piece on one side of the module (hereinafter referred to as "broken pole"), so as to avoid short circuit when milling the aluminum pole piece on the other side.

Currently, the method used in the pole disconnecting process is to disconnect an arch-shaped connection of the pole pieces manually with tools (pliers, shovels, angle grinder, and the like). The manual operation is slow in speed, high in labor intensity, poor in pole disconnecting effect, and irregular in shapes after pole disconnecting, which is not conducive to the subsequent milling of the pole pieces on the milling machine. Meanwhile, manually prying off the pole piece will sometimes cause damage to the battery electrode itself. In addition, the efficiency of cutting and disconnecting poles by hand-held angle grinder is not high enough. Moreover, because a grinding wheel used in the angle grinder is generally a resin saw blade (which cannot be a metal saw blade because the metal saw blade has a large reaction force when cutting metal, and causes the rotating angle grinder to hurt people if the metal saw blade is not carefully held by hand). The resin saw blade is a consumable component, and wears quickly during cutting, so the resin saw blade needs to be replaced frequently, which also affects the working efficiency and increases the operation cost.

<CIT> discloses a groove grinding machine capable of adjusting a groove position. The groove grinding machine comprises a machine body, a feeding tank, a feeding mechanism, an upper grinding mechanism, a lower grinding mechanism and a side pressing mechanism, wherein a material outlet which enables the mandril to get in and out is formed between the feeding tank and a working platform; a pushing plate of the feeding mechanism is used for pushing the mandril to the lower part of an upper grinding wheel and the upper part of a lower grinding wheel; the machine body is provided with an upper tank body which moves up and down in the direction which is vertical to the axis of the mandril; an upper guide rail and an upper translation screw rod are arranged on the upper tank body; the upper grinding mechanism can move left and right in the direction which is parallel to the axis of the mandril and is arranged on the upper guide rail in a sliding way; an upper translation sliding block which is matched with the upper translation screw rod is connected with the upper grinding mechanism; the machine body is fixedly provided with upper upright posts; clamping grooves stretching in the vertical direction are formed in the upper upright posts; fixed rotary knobs are connected with nuts by penetrating through the clamping grooves and front and rear tank body plates of the upper tank body.

While the above patent application may achieve its intended purposes, there is still a need for a new and improved a device for cutting connection of multi-piece module electrodes.

To overcome the deficiencies of the existing technology, the present invention provides a device for cutting connections of multi-piece module electrodes, which is particularly applied to an electrode disconnecting operation of a battery module.

The invention according to claim <NUM> provides device for cutting connections of multi-piece module electrodes. Further embodiments of the present invention are set out in the dependent claims.

The present invention has the beneficial effects that:.

The present invention is further described hereinafter with reference to the drawings and the embodiments.

<NUM> refers to stand, <NUM> refers to portal frame, <NUM> refers to workbench, <NUM> refers to L-shaped fixing plate, <NUM> refers to clamping piece, <NUM> refers to height adjusting device, <NUM> refers to height adjusting screw rod, <NUM> refers to lifting guide rod, <NUM> refers to angle grinding device, <NUM> refers to polishing shaft, <NUM> refers to angle grinder, <NUM> refers to saw blade, <NUM> refers to angle grinder fixed mount, <NUM> refers to square tube, <NUM> refers to angle grinder slider, <NUM> refers to polishing shaft frame, <NUM> refers to longitudinal translation frame, <NUM> refers to longitudinal guide rod, <NUM> refers to longitudinal translation cylinder, <NUM> refers to transverse translation frame, <NUM> refers to transverse guide rail, <NUM> refers to trapezoidal screw rod, <NUM> refers to hand wheel, <NUM> refers to module, and <NUM> refers to electrode.

To make the objects, technical solutions, and advantages of the present application clearer, the following further describes some embodiments of the present invention in detail with reference to the accompanying drawings and embodiments. In order to understand the present invention thoroughly, some specific details will be involved in the following description. Without these specific details, the present invention can still be realized, that is, those skilled in the art can use these descriptions and statements here to more effectively introduce the essence thereof to others skilled in the art. In addition, it should be noted that the words "front side", "back side", "left side", "right side", "upper side" and "lower side" used in the following description refer to the directions in the drawings, and the words "inside" and "outside" refer to the directions towards or far away from a geometric center of a specific part respectively. Simple adjustment of the above direction made by those skilled in the related art without any creativity work should not be understood as a technology beyond the protection scope of the present application. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the scope of the invention, which is defined by the appended claims. In order to avoid confusing the object of the present invention, the well-known technologies such as manufacturing method, control program, component size, material composition, pipeline layout, and the like, are not described in detail since they have been easily understood.

<FIG> is a three-dimensional diagram of an embodiment of the present invention. Referring to <FIG>, an embodiment of the present invention provides a device for cutting connection of multi-piece module electrodes, which includes a stand <NUM>. The stand <NUM> is provided with a workbench <NUM>, and the workbench <NUM> is connected with a height adjusting device <NUM>. The height adjusting device <NUM> is used for adjusting a height of the workbench <NUM> to match with battery modules of different heights. The workbench <NUM> is used for fixing a battery module waiting for pole disconnecting.

Further, referring to <FIG> and <FIG>, the device for cutting connection of the multi-piece module electrodes further includes an angle grinding device <NUM>. The angle grinding device <NUM> includes a polishing shaft <NUM> and an angle grinder <NUM>, the angle grinder <NUM> is arranged on the polishing shaft <NUM>, and the angle grinder is provided with a saw blade <NUM>.

A specific number of the angle grinders <NUM> distributed on the polishing shaft <NUM> depends on a number of electrodes <NUM> on a module <NUM> (referring to <FIG>), the specific function of which is to cut the electrodes <NUM> (connecting pieces) of the module with the saw blade <NUM> of the angle grinder <NUM> at the same time, so as to cut off circuit connection quickly and safely.

There are many kinds of decommissioned modules with different sizes received by recycling enterprises, but a number of modules of the same model are very limited. Therefore, a multi-piece cutting machine is required to adapt to different types of modules <NUM>; otherwise, the multi-piece cutting machine is only applicable to one or a few types of modules <NUM>. The newly designed angle grinder <NUM> can move along the polishing shaft <NUM> to adjust its position to match different modules.

Still further, the workbench <NUM> is provided with a translation feed device configured for controlling a translation movement of the workbench <NUM>. In actual operation, by controlling the translational feed of the worktable <NUM> through the translational feed device, the angle grinder <NUM> can be close to the module <NUM> and cut off the electrode <NUM> (connecting piece) of the module <NUM> to complete the pole disconnecting step.

Adopting mechanical clamping and cutting instead of the original hand-held angle grinder, a saw blade for cutting aluminum alloy instead of the resin saw blade can be used as the saw blade <NUM> of the angle grinder, thus reducing the use cost and the times of replacing the saw blade, and significantly improving the working efficiency.

The device for cutting connection of the multi-piece module electrodes disclosed above is only a preferred embodiment of the present invention, and is only used to illustrate the technical solutions of the present invention, but not to limit the present invention. Those of ordinary skills in the art should understand that they can still modify or supplement the technical solutions described in the aforementioned technical solutions in combination with the existing technology, or replace some of the technical features equivalently. For example, the translation feed device may be arranged on the angle grinding device <NUM> to control the movement of the angle grinding device <NUM>.

In an embodiment of the invention, the angle grinder <NUM> is provided with an angle grinder fixed mount <NUM>. The angle grinder fixed mount <NUM> includes a square tube <NUM> and an angle grinder slider <NUM>. The angle grinder <NUM> is inserted into the square tube, and the angle grinder slider <NUM> is sheathed on the polishing shaft <NUM> for fixing the angle grinder <NUM> conveniently, which is suitable for both specially developed angle grinders <NUM> and general angle grinders <NUM> in the market.

In this embodiment, optionally, the angle grinder <NUM> is tightened on the square tube <NUM> with four screws.

In this embodiment, optionally, in order to prevent the angle grinder <NUM> from shifting on the polishing shaft <NUM>, the angle grinder <NUM> may be fixed on the polishing shaft <NUM> by a pentagon screw so that the angle grinder does not shift.

According to the invention, the polishing shaft <NUM> extends along left and right directions, at least two polishing shafts are corresponding to one angle grinder <NUM>, and the polishing shafts <NUM> are arranged along upper and lower directions to prevent the angle grinder <NUM> from shaking and shifting in the polishing shafts <NUM>.

According to the invention, a plurality of groups of polishing shafts <NUM> are included, each group of the polishing shafts <NUM> is corresponding to a plurality of the angle grinders <NUM>, and each group of the polishing shafts <NUM> is arranged along front and back directions.

As a width of a hand-held angle grinder is generally <NUM>, if the clamping of the angle grinder is considered, a distance between circular saw blades of two angle grinders is at least about <NUM>. In order to cut the module <NUM> with a small single module distance (i.e., small d value), a method of arranging a plurality of rows of angle grinders at intervals may be adopted in this art, thus solving the problem of cutting the pole pieces of the module with small distance. Taking the layout of two rows as an example (referring to <FIG>), when the second row and the first row are arranged at intervals, a minimum distance of the circular saw blades will be reduced from d to d/<NUM>, so that cutting may be realized when the minimum distance between the single modules <NUM> is no less than <NUM>, and this spacing can be adapted to most modules <NUM>.

If d is less than <NUM>, the layout of two rows cannot meet the requirements. A solution is to arrange three rows side by side, and the distance between the minimum circular saw blades may reach d/<NUM> (<NUM>). It can be seen that this spacing can cover almost all modules <NUM>.

According to an embodiment, the angle grinding device <NUM> includes a polishing shaft frame <NUM>, and the polishing shaft <NUM> is arranged in the polishing shaft frame <NUM>.

In this embodiment, two rows of polishing shafts <NUM> are installed in the polishing shaft frame <NUM>, and there are two polishing shafts <NUM> in each row.

According to an embodiment, the stand <NUM> is provided with a portal frame <NUM>, and the angle grinding device <NUM> is arranged on the portal frame.

According to an embodiment, referring to <FIG>, the stand <NUM> is provided with a longitudinal guide rod <NUM>, the longitudinal guide rod <NUM> is provided with a longitudinal translation frame <NUM>, and the longitudinal translation frame <NUM> may translate back and forth along the longitudinal guide rod <NUM>.

The longitudinal translation frame <NUM> is provided with a transverse guide rail <NUM>, the transverse guide rail <NUM> is provided with a transverse translation frame <NUM>, the workbench <NUM> is arranged on the transverse translation frame <NUM>, and the transverse translation frame <NUM> may translate left and right along the transverse guide rail <NUM>.

The height adjusting device <NUM> is arranged between the workbench <NUM> and the transverse translation frame <NUM>.

According to an embodiment, the workbench <NUM> is provided with an L-shaped fixing plate <NUM>, and the workbench <NUM> is provided with a movable clamping plate <NUM>.

In this embodiment, optionally, in order to clamp the module <NUM> to fix the module in the process of pole disconnecting, a biaxial cylinder is installed under the workbench <NUM>, and the biaxial cylinder clamps and releases the module <NUM> through the clamping plate <NUM> installed thereon.

According to an embodiment, the height adjusting device <NUM> includes a height adjusting screw rod <NUM> and a lifting guide rod <NUM>, so that the worktable <NUM> can stably move in parallel with an operating table all the time, thus ensuring the accuracy of the relative position between the module <NUM> and the circular saw blade of the angle grinder above, i.e., ensuring the cutting accuracy.

According to an embodiment, the longitudinal translation frame <NUM> is provided with a longitudinal translation cylinder <NUM>. That is, the longitudinal translation cylinder <NUM> is used as the translation feed device, and during specific work, the workbench <NUM> is controlled to translate by the longitudinal translation cylinder <NUM> to realize the feeding step, while the angle grinder <NUM> can complete the pole disconnecting step without moving.

The longitudinal translation frame <NUM> is provided with a trapezoidal screw rod <NUM>, the trapezoidal screw rod <NUM> is provided with a hand wheel <NUM>, the trapezoidal screw rod <NUM> is provided with a trapezoidal nut, and the trapezoidal nut is connected with the transverse translation frame <NUM>. By shaking the hand wheel <NUM>, an operator can drive the trapezoidal nut to move in left and right directions, and then move a center plate in the left and right directions.

According to an embodiment, the left and right directions are defined as an X axis, the front and rear directions are defined as a Y axis, and the upper and lower directions are defined as a Z axis.

Two parallel longitudinal guide rods <NUM> are placed on the stand <NUM> of the device for cutting connection of the multi-piece module electrodes along the Y axis direction, each guide shaft is fixed on the operating table by screws through two fixing seats, each guide shaft is provided with two linear bearing, and these four linear bearing are connected with the longitudinal translation frame <NUM> by screws.

Two transverse guide rails <NUM> are placed on the longitudinal translation frame <NUM> in parallel along the X axis direction, each linear guide rail has two sliders, and four sliders are fixedly connected with the transverse translation frame <NUM> by screws.

The transverse translation frame <NUM> is provided with four vertical lifting guide rods <NUM>, and lower ends of the lifting guide rods <NUM> are fixedly connected with the transverse translation frame <NUM> by screws through supports; the other end of each lifting guide rod <NUM> is provided with a sliding bearing, and the four sliding bearings are fixedly mounted on the workbench <NUM> by screws.

The workbench <NUM>, the transverse translation frame <NUM> and the longitudinal translation frame <NUM> are arranged from top to bottom and divided into upper, middle and lower layers.

The workbench <NUM> is welded with the L-shaped fixing plate <NUM> for positioning a workpiece (module <NUM>), and the biaxial cylinder is installed under the workbench <NUM>, and the biaxial cylinder clamps and releases the module <NUM> through the clamping plate installed thereon.

The working process of the device for cutting connection of the multi-piece module electrodes is as follows:.

Since the dimensional errors of the modules <NUM> of the same type are not large, which are basically less than <NUM>, once the X axis and the Z axis are adjusted for modules <NUM> of the same batch, steps <NUM> and <NUM> may be directly operated without adjustment in the subsequent pole disconnecting process.

According to the above principles, the above embodiments of the present invention may also be appropriately changed and modified. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention may also fall within the scope of the invention, as defined by the appended claims.

Claim 1:
A device for cutting connections of multi-piece module electrodes, comprising a stand (<NUM>), wherein the stand (<NUM>) is provided with a workbench (<NUM>), and the workbench (<NUM>) is connected with a height adjusting device (<NUM>); and
further comprising an angle grinding device (<NUM>), wherein the angle grinding device (<NUM>) comprises polishing shafts (<NUM>) and angle grinders (<NUM>), the angle grinders (<NUM>) are arranged on the polishing shafts (<NUM>), spacing between the angle grinders (<NUM>) is adjustable along the polishing shafts (<NUM>), and each of the angle grinders (<NUM>) is provided with a saw blade (<NUM>);
the workbench (<NUM>) or the angle grinding device (<NUM>) is provided with a translation feed device configured for controlling a translation movement of the workbench (<NUM>) or the angle grinding device (<NUM>);
wherein the polishing shafts (<NUM>) extend along left and right directions, at least two polishing shafts (<NUM>) are corresponding to one of the angle grinders (<NUM>), and the polishing shafts (<NUM>) are arranged along upper and lower directions;
wherein a plurality of groups of polishing shafts (<NUM>) are provided, each group of the polishing shafts (<NUM>) is corresponding to a plurality of the angle grinders (<NUM>), and each group of the polishing shafts (<NUM>) is arranged along front and back directions.