Lithium battery pole piece hot roller pressing production equipment

Abstract

The utility model relates to the field of lithium battery pole piece pressing, in particular to lithium battery pole piece hot roller pressing production equipment. The technical problems that in the lithium battery pole piece pressing process, due to the fact that the distance between most of two pressing rollers is fixed, lithium battery pole pieces with different thicknesses cannot be machined, the use limitation of equipment is large, meanwhile, independent equipment is needed for drying the lithium battery pole pieces after pressing is completed, and the working labor intensity is increased are solved. According to the technical scheme, the hot roller pressing production equipment for the lithium battery pole piece comprises a vertical frame, the device further comprises a pressing assembly, a fixing assembly and supporting legs. The heating rod operates to heat the movable pressing roller and the fixed pressing roller, so that good contact between a pole piece and an electrolyte layer is ensured, the conductivity and the performance of a battery are improved, the pressed lithium battery pole piece is wound by the winding roller, and the limiting disc reversely or relatively slides, so that the lithium battery is prevented from being damaged. Therefore, the distance between the limiting discs is adjusted according to the rolling size of the lithium battery electrode plate.

Description

Technical Field

[0001] The utility model relates to the field of lithium battery pole piece pressing, in particular to a lithium battery pole piece hot roller pressing production device. Background Art

[0002] Lithium batteries are primary batteries that use lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. They are different from rechargeable lithium-ion batteries and lithium-ion polymer batteries. Due to the highly active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high environmental requirements. During the processing of lithium batteries, it is necessary to use drying and rolling equipment to dry and roll the pole pieces so that the slurry coated on the pole pieces can quickly dry and solidify, and to enhance the bonding strength between the active material and the pole pieces. However, during the use of existing pressing production equipment, the distance between the two pressing rollers is mostly fixed, and lithium battery pole pieces of different thicknesses cannot be processed. Adjustment is particularly inconvenient, resulting in greater limitations on the use of the equipment. At the same time, separate equipment is required to dry it after pressing, which increases labor intensity and reduces production efficiency. Utility Model Content

[0003] In order to overcome the problem that in the process of pressing lithium battery pole pieces, the distance between the two pressing rollers is mostly fixed, which makes it impossible to process lithium battery pole pieces of different thicknesses and is particularly inconvenient to adjust, resulting in large limitations on the use of the equipment. At the same time, separate equipment is required to dry it after pressing is completed, which increases the labor intensity and leads to reduced production efficiency.

[0004] The technical solution of the utility model is: a lithium battery electrode hot roller pressing production equipment, including a stand; also including a pressing component, a fixing component, and a support leg. A pressing component for pressing is arranged between the stands, and the front and rear ends of the stands are both provided with a fixing component for limiting the battery cells, and the bottom end of the stand is relatively provided with a support leg.

[0005] Preferably, the cooperation between the pressing components can heat the lithium battery pole pieces when they are pressed, ensuring good contact between the pole pieces and the electrolyte layer, eliminating air or other obstacles, thereby improving the conductivity and performance of the battery, reducing internal resistance, and improving energy density and cycle life. The setting of the fixing component fixes the lithium battery pole pieces when they are pressed, guides the lithium battery pole pieces when they are pressed, and avoids the displacement of the lithium battery pole pieces.

[0006] Preferably, the pressing assembly includes a bracket, a fixed frame, a rotating rod, a slide plate, a fixed ear, a movable pressing roller, a fixed pressing roller, and a heating rod, and a bracket is provided on the opposite side of the stand.

[0007] Preferably, a fixing frame is provided in the middle position of the top end of the bracket, and a rotating rod with a handle is rotatably connected to the middle position inside the fixing frame. The outer sides between the rotating rods are slidably connected to a slide plate through a slider. By rotating the handle on the rotating rod, the rotating rod rotates to drive the slider to slide, thereby causing the slide plate and the movable pressing roller to move vertically, so that the movable pressing roller and the battery electrode are abutted against each other.

[0008] Preferably, fixed ears are provided on the left and right sides of the bottom end of the skateboard, a movable pressing roller is provided between the fixed ears, a fixed pressing roller is provided below the brackets, and heating rods are provided symmetrically inside the movable pressing roller and the fixed pressing roller. The movable pressing roller and the fixed pressing roller are heated by the operation of the heating rods, thereby ensuring good contact between the electrode and the electrolyte layer, eliminating air or other obstacles, and thus improving the conductivity and performance of the battery.

[0009] Preferably, the fixing assembly includes a first mounting frame, a winding roller, a limiting disk, a second mounting frame, and a positioning roller, and the rear end side wall of the bracket is provided with the first mounting frame opposite to the first mounting frame.

[0010] Preferably, a winding roller is arranged between the first mounting frames, and the outer side of the winding roller is slidably connected to the limit plate. A second mounting frame is relatively arranged on the front end side wall of the bracket, and two groups of positioning rollers are relatively arranged between the second mounting frames. The lithium battery electrode sheet is wound by the winding roller, and the limit plate is made to slide in the opposite direction according to the size of the winding, so that the distance between the limit plates is adjusted according to the winding size of the lithium battery electrode sheet, and the wound lithium battery electrode sheet is fixed and limited.

[0011] 1. The pressing assembly is used to press the lithium battery pole pieces. At the same time, the pressing assemblies can be used to heat the lithium battery pole pieces during pressing to ensure good contact between the pole pieces and the electrolyte layer, eliminate air or other obstacles, thereby improving the conductivity and performance of the battery, reducing internal resistance, increasing energy density and cycle life, and improving the consistency and stability of the battery. The fixing assembly is used to fix the lithium battery pole pieces during pressing, guide the lithium battery pole pieces during pressing, and avoid displacement of the lithium battery pole pieces.

[0012] 2. By turning the handle on the rotating rod, the rotating rod rotates and drives the slider to slide, thereby making the slide plate and the movable pressing roller move vertically, so that the movable pressing roller and the battery electrode are against each other. By connecting the external power supply, the movable pressing roller and the fixed pressing roller rotate, so that lithium battery electrodes of different specifications can be pressed;

[0013] 3. The movable pressing roller and the fixed pressing roller are heated by the heating rod to ensure good contact between the electrode and the electrolyte layer, eliminate air or other obstacles, and thus improve the conductivity and performance of the battery. The pressed lithium battery electrode is wound by the winding roller. According to the size of the winding, the limit plate slides in the opposite direction, thereby adjusting the distance between the limit plates according to the winding size of the lithium battery electrode, and fixing the wound lithium battery electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Shown is a schematic diagram of the first three-dimensional structure of the lithium battery pole piece hot roller pressing production equipment of the utility model;

[0015] Figure 2 Shown is a schematic diagram of the second three-dimensional structure of the lithium battery pole piece hot roller pressing production equipment of the present invention;

[0016] Figure 3 Shown is a schematic diagram of the third three-dimensional structure of the lithium battery pole piece hot roller pressing production equipment of the utility model;

[0017] Figure 4 What is shown is a schematic diagram of the three-dimensional structure of the pressing assembly of the lithium battery electrode hot roller pressing production equipment of the present invention.

[0018] Explanation of the accompanying drawings: 1. Stand; 2. Pressing assembly; 201. Bracket; 202. Fixed frame; 203. Rotating rod; 204. Slide plate; 205. Fixed ear; 206. Movable pressing roller; 207. Fixed pressing roller; 208. Heating rod; 3. Fixed assembly; 301. First mounting frame; 302. Winding roller; 303. Limiting plate; 304. Second mounting frame; 305. Positioning roller; 4. Support leg. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] See also Figure 1 The utility model provides an embodiment: a lithium battery electrode hot roller pressing production equipment, including a stand 1; also including a pressing component 2, a fixing component 3, and a support leg 4. The pressing component 2 for pressing is arranged between the stand 1, and the front and rear ends of the stand 1 are both provided with a fixing component 3 for limiting the battery cell position, and the bottom end of the stand 1 is relatively provided with a support leg 4.

[0021] See also Figure 2-4, in this embodiment, the pressing component 2 includes a bracket 201, a fixed frame 202, a rotating rod 203, a slide plate 204, a fixed ear 205, a movable pressing roller 206, a fixed pressing roller 207, and a heating rod 208. The bracket 201 is provided on the opposite side of the stand 1; a fixed frame 202 is provided at the middle position of the top of the bracket 201, and the middle position inside the fixed frame 202 is rotatably connected to the rotating rod 203 with a handle, and the outer side between the rotating rods 203 is slidably connected to the slide plate 204 through a slider; fixed ears 205 are provided on both sides of the bottom of the slide plate 204, and a movable pressing roller 206 is provided between the fixed ears 205, and a fixed pressing roller 207 is provided below the bracket 201, and the movable pressing roller 206 and the fixed pressing roller 207 are both centrally symmetrically provided with a heating rod 208; the fixed component 3 includes a first mounting frame 301, a winding roller 302, a limit plate 303, a second mounting frame 304, and a positioning roller 305. The rear end side wall of the bracket 201 is relatively provided with a first mounting frame 301; a winding roller 302 is provided between the first mounting frame 301, and the outer side of the winding roller 302 is slidably connected to the limiting disk 303. The front end side wall of the bracket 201 is relatively provided with a second mounting frame 304, and two groups of positioning rollers 305 are relatively provided between the second mounting frames 304. The movable pressing roller 206 and the fixed pressing roller 207 are heated by the heating rod 208 to ensure good contact between the electrode sheet and the electrolyte layer, eliminate air or other obstacles, thereby improving the conductivity and performance of the battery. The pressed lithium battery electrode sheet is wound by the winding roller 302, and the limiting disk 303 is slid in the opposite direction according to the size of the winding, so as to adjust the distance between the limiting disks 303 according to the winding size of the lithium battery electrode sheet, and fix the wound lithium battery electrode sheet.

[0022] During operation, the lithium battery electrode is placed between the positioning rollers 305 to fix the battery electrode, and the front end of the battery electrode is placed on the outside of the fixed pressing roller 207. According to the thickness of the battery electrode, the distance between the movable pressing roller 206 and the fixed pressing roller 207 is adjusted, and the handle on the rotating rod 203 is rotated to rotate the rotating rod 203 to drive the slider to slide, thereby making the slide plate 204 and the movable pressing roller 206 move vertically, so that the movable pressing roller 206 and the battery electrode are offset, and the movable pressing roller 206 and the fixed pressing roller are connected by an external power supply. 207 rotates to press the lithium battery electrode sheets, and at the same time the heating rod 208 operates to heat the movable pressing roller 206 and the fixed pressing roller 207 to ensure good contact between the electrode sheets and the electrolyte layer, eliminate air or other obstacles, and thus improve the conductivity and performance of the battery. The pressed lithium battery electrode sheets are wound by the winding roller 302, and the limit disk 303 is reversed or relatively slid according to the size of the winding, so as to adjust the distance between the limit disks 303 according to the winding size of the lithium battery electrode sheets, and the wound lithium battery electrode sheets are fixed and limited.

[0023] Through the above steps, the setting of the pressing component 2 performs the pressing operation on the lithium battery pole pieces. At the same time, the cooperation between the pressing components 2 can heat the lithium battery pole pieces when pressing them, ensuring good contact between the pole pieces and the electrolyte layer, thereby improving the conductivity and performance of the battery, reducing internal resistance, and improving energy density and cycle life. The setting of the fixing component 3 fixes the lithium battery pole pieces when pressing them, guides the lithium battery pole pieces when pressing them, and avoids the displacement of the lithium battery pole pieces.

[0024] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.

Claims

1. A lithium battery pole piece hot roller pressing production equipment, comprising a stand (1); characterized in that: The device further comprises a pressing assembly (2), a fixing assembly (3), and a support leg (4). The pressing assembly (2) for pressing is provided between the vertical frames (1). The front and rear ends of the vertical frames (1) are both provided with a fixing assembly (3) for limiting the position of the battery cells. The bottom end of the vertical frame (1) is provided with a support leg (4) opposite to the vertical frame.

2. The lithium battery pole piece hot roller pressing production equipment according to claim 1, characterized in that: The pressing assembly (2) includes a bracket (201), a fixed bracket (202), a rotating rod (203), a slide plate (204), a fixed ear (205), a movable pressing roller (206), a fixed pressing roller (207), and a heating rod (208). The bracket (201) is provided on the opposite side of the stand (1).

3. The lithium battery pole piece hot roller pressing production equipment according to claim 2, characterized in that: A fixing frame (202) is provided at the middle position of the top of the bracket (201), a rotating rod (203) with a handle is rotatably connected to the middle position inside the fixing frame (202), and a slide plate (204) is slidably connected to the outer side of the rotating rod (203) via a slider.

4. The lithium battery pole piece hot roller pressing production equipment according to claim 3, characterized in that: Fixed ears (205) are provided on both left and right sides of the bottom end of the slide plate (204), a movable pressing roller (206) is provided between the fixed ears (205), a fixed pressing roller (207) is provided below between the brackets (201), and heating rods (208) are provided symmetrically inside the movable pressing roller (206) and the fixed pressing roller (207).

5. The lithium battery pole piece hot roller pressing production equipment according to claim 2, characterized in that: The fixing assembly (3) comprises a first mounting frame (301), a winding roller (302), a limiting plate (303), a second mounting frame (304), and a positioning roller (305). The first mounting frame (301) is arranged opposite to the rear end side wall of the bracket (201).

6. The lithium battery pole piece hot roller pressing production equipment according to claim 5, characterized in that: A winding roller (302) is provided between the first mounting frames (301), the outer side of the winding roller (302) is slidably connected to a limiting disk (303), a second mounting frame (304) is provided opposite to the front end side wall of the bracket (201), and two groups of positioning rollers (305) are provided opposite to each other between the second mounting frames (304).

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