Lithium battery pole piece surface treatment equipment
By designing lithium battery pole piece surface treatment equipment and using guide components and upper and lower defoaming components to eliminate bubbles on the pole piece surface, the problem of lithium plating on the pole piece was solved, the performance of lithium batteries was improved and the production cost was reduced.
Patent Information
- Application Number
- CN202510887371.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-30
- Publication Date
- 2025-09-12
AI Technical Summary
Bubbles on the surface of the electrode lead to lithium deposition, which results in decreased lithium battery performance and increased production costs.
A lithium battery electrode surface treatment equipment is designed, which adopts a guide component and upper and lower bubble removal components, and uses a combination of laser and air knife to eliminate bubbles on the upper and lower surfaces of the electrode.
Effectively reduce bubbles on the electrode surface, prevent lithium deposition, improve lithium battery performance, and reduce production costs.
Smart Images
Figure CN120637401A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of pole piece surface treatment, and in particular to a lithium battery pole piece surface treatment device. Background Art
[0002] As a crucial component of lithium batteries, pole pieces play a key role in their overall performance. During pole piece production, bubbles appearing on the surface can trigger lithium deposition, directly leading to decreased battery performance, shortened battery life, and, in severe cases, explosion. To address this issue, lithium-containing compounds are currently commonly used for lithium replenishment. By adding these compounds, lithium ions lost due to deposition are replenished, thereby restoring battery performance to a certain extent.
[0003] In the process of using lithium-containing composites to replenish the electrode, the inventors discovered at least the following problems with this technology: First, the lithium ions in the lithium-containing composites have difficulty entering the electrode, resulting in a long replenishment time. Second, the high price of the lithium-containing composites increases the cost of replenishing the electrode. Therefore, when lithium deposition occurs in the electrode, not only does it reduce the production efficiency of the lithium battery, but it also increases the production cost of the lithium battery. Summary of the Invention
[0004] In order to reduce the occurrence of lithium plating on the electrode, the present application provides a lithium battery electrode surface treatment device.
[0005] The present application provides a lithium battery electrode surface treatment device that adopts the following technical solutions: A lithium battery electrode surface treatment device includes a frame, a guide assembly is provided on the frame, the guide assembly is used to form a conveying channel, one end of the conveying channel is a feed end, and the other end of the conveying channel is a discharge end, the conveying channel is used to transfer the electrode along the conveying channel from the feed end to the discharge end, an upper debubble assembly is provided above the conveying channel, the upper debubble assembly is used to eliminate bubbles on the upper surface of the electrode, and a lower debubble assembly is provided below the conveying channel, the lower debubble assembly is used to eliminate bubbles on the lower surface of the electrode.
[0006] By adopting the above technical solution, the electrode is transported along the transmission channel from the feed end to the discharge end. When the electrode passes through the upper debubble assembly, the upper debubble assembly eliminates the bubbles on the upper surface of the electrode. When the electrode passes through the lower debubble assembly, the lower debubble assembly eliminates the bubbles on the lower surface of the electrode, thereby reducing the situation where bubbles on the surface of the electrode cause lithium deposition on the electrode.
[0007] Preferably, the guide assembly includes a feed roller, a first guide roller, a second guide roller and a discharging roller, and the feed roller, the first guide roller, the second guide roller and the discharging roller are all rotatably arranged on the frame, the first guide roller and the second guide roller are both located between the feed roller and the discharging roller, the first guide roller is located between the feed roller and the second guide roller, the second guide roller is located between the first guide roller and the discharging roller, the first guide roller is located obliquely above the feed roller, the second guide roller is located obliquely below the first guide roller, and the discharging roller is located obliquely above the second guide roller, the conveying channel is arranged above the feed roller, above the first guide roller, below the second guide roller and above the discharging roller, the feed end is close to the feed roller, and the discharging end is close to the discharging roller.
[0008] By adopting the above technical solution, after the electrode is input from the feed end, the electrode moves in sequence along the top of the feed roller, above the first guide roller, below the second guide roller and above the discharge roller, and finally the electrode is output from the discharge end.
[0009] Preferably, the conveying channel includes a first channel, a second channel and a third channel, one end of the second channel is connected with one end of the first channel, the other end of the first channel is the feed end, the other end of the second channel is connected with one end of the third channel, the other end of the third channel is the discharge end, the first channel is located above the feed roller and above the first guide roller, the second channel is located above the first guide roller and below the second guide roller, the third channel is located below the second guide roller and above the discharge roller, the upper debubbling assembly is located above the second channel, and the lower debubbling assembly is located below the second channel.
[0010] By adopting the above technical solution, when the electrode is transferred from the feed end to the discharge end, the electrode passes through the first channel, the second channel and the third channel in sequence. When the electrode passes through the second channel, the upper debubble assembly eliminates the bubbles on the upper surface of the electrode, and the lower debubble assembly eliminates the bubbles on the lower surface of the electrode, thereby reducing the situation where bubbles appearing on the surface of the electrode cause lithium deposition on the electrode.
[0011] Preferably, the upper debubble assembly includes an upper laser, which is connected to the frame, located above the second channel, and the emission end of the upper laser faces the second channel.
[0012] By adopting the above technical solution, the upper laser emits laser to break the bubbles on the upper surface of the pole piece, thereby achieving the effect of eliminating the bubbles on the upper surface of the pole piece.
[0013] Preferably, the upper defoaming component also includes an upper air knife and an upper air duct, both of which are located above the second channel, the upper air knife is located on the side of the upper laser away from the feed end, the upper air knife is connected to the frame, the air inlet end of the upper air knife faces the second channel, and the air outlet end of the upper air knife is connected to the upper air duct.
[0014] By adopting the above technical solution, the upper air duct is connected to the exhaust equipment at one end away from the upper air knife, so that negative pressure is generated at the air inlet end of the upper air knife, adsorbing the bubble powder remaining after the bubbles are burst, thereby achieving the effect of eliminating bubbles on the surface of the electrode.
[0015] Preferably, the lower layer debubble removal component includes a lower layer laser, the lower layer laser is connected to the frame, the lower layer laser is located below the second channel, and the emission end of the lower layer laser faces the second channel.
[0016] By adopting the above technical solution, the lower laser emits laser to break the bubbles on the lower surface of the pole piece, thereby achieving the effect of eliminating the bubbles on the lower surface of the pole piece.
[0017] Preferably, the lower-layer defoaming component also includes a lower-layer air knife and a lower-layer air duct, both of which are located below the second channel. The lower-layer air knife is located on the side of the lower-layer laser away from the feed end. The lower-layer air knife is connected to the frame, the air inlet end of the lower-layer air knife faces the second channel, and the air outlet end of the lower-layer air knife is connected to the lower-layer air duct.
[0018] By adopting the above technical solution, the lower air duct is connected to the exhaust equipment at one end away from the lower air knife, so that negative pressure is generated at the air inlet end of the lower air knife, and the bubble powder remaining after the bubbles are burst is adsorbed, thereby achieving the effect of eliminating bubbles on the lower surface of the electrode.
[0019] Preferably, a first camera is provided above the first channel, and a second camera is provided below the first channel, and both the first camera and the second camera are used to photograph the pole piece in the first channel.
[0020] By adopting the above technical solution, when the electrode passes through the first channel, the first camera photographs the upper surface of the electrode to obtain the size, shape, color and position of the bubbles on the upper surface of the electrode, so that the upper debubble component can operate according to the bubble information collected by the first camera. The second camera photographs the lower surface of the electrode to obtain the size, shape, color and position of the bubbles on the lower surface of the electrode, so that the lower debubble component can operate according to the bubble information collected by the first camera.
[0021] Preferably, a third camera is provided above the third channel, and a fourth camera is provided below the third channel, and both the third camera and the fourth camera are used to photograph the pole piece in the third channel.
[0022] By adopting the above technical solution, when the electrode passes through the third channel, the third camera photographs the upper surface of the electrode, re-inspects the upper surface of the electrode, and detects whether there are residual bubbles on the upper surface of the electrode; the fourth camera photographs the lower surface of the electrode, re-inspects the lower surface of the electrode, and detects whether there are residual bubbles on the lower surface of the electrode.
[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a frame, a guide component, a transmission channel, a feeding end, a discharging end, an upper debubbling component and a lower debubbling component, the upper debubbling component eliminates bubbles on the upper surface of the electrode, and the lower debubbling component eliminates bubbles on the lower surface of the electrode, thereby reducing the situation where bubbles on the surface of the electrode cause lithium deposition on the electrode; 2. By setting up the upper laser, upper air knife and upper air duct, the bubbles on the upper surface of the electrode can be eliminated; 3. By setting up a lower layer laser, a lower layer air knife and a lower layer air duct, the effect of eliminating bubbles on the lower surface of the electrode is achieved. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 This is a schematic structural diagram of a lithium battery electrode surface treatment device in an embodiment of the present application.
[0025] Figure 2 It is a schematic diagram of the positional relationship between the guide assembly and the transmission channel in an embodiment of the present application.
[0026] Figure 3 This is a schematic diagram of the positional relationship between the upper laser and the upper wind knife in an embodiment of the present application.
[0027] Figure 4 This is a schematic diagram of the positional relationship between the lower layer laser and the lower layer wind knife in an embodiment of the present application.
[0028] Explanation of the accompanying drawings: 1. Frame; 11. Pole piece; 2. Guide assembly; 21. Feed roller; 22. First guide roller; 23. Second guide roller; 24. Discharge roller; 3. Conveying channel; 31. First channel; 311. Feed end; 32. Second channel; 33. Third channel; 331. Discharge end; 4. First camera; 5. Second camera; 6. Third camera; 7. Fourth camera; 8. Upper-layer debubbling assembly; 81. Upper-layer laser; 82. Upper-layer air knife; 83. Upper-layer air duct; 9. Lower-layer debubbling assembly; 91. Lower-layer laser; 92. Lower-layer air knife; 93. Lower-layer air duct. DETAILED DESCRIPTION
[0029] The following is combined with Figure 1-4 This application is described in further detail.
[0030] The present application embodiment discloses a lithium battery electrode surface treatment device. Figure 1 and Figure 2The machine comprises a frame 1, on which a guide assembly 2 is mounted, the guide assembly 2 being used to form a conveying channel 3. The guide assembly 2 comprises a feed roller 21, a first guide roller 22, a second guide roller 23, and a discharge roller 24. The feed roller 21, the first guide roller 22, the second guide roller 23, and the discharge roller 24 are all rotatably mounted on the frame 1. The conveying channel 3 is arranged above the feed roller 21, above the first guide roller 22, below the second guide roller 23, and above the discharge roller 24. The first guide roller 22 and the second guide roller 23 are both located between the feed roller 21 and the discharge roller 24. The first guide roller 22 is located between the feed roller 21 and the second guide roller 23, and the second guide roller 23 is located between the first guide roller 22 and the discharge roller 24. The first guide roller 22 is located obliquely above the feed roller 21, the second guide roller 23 is located obliquely below the first guide roller 22, and the discharge roller 24 is located obliquely above the second guide roller 23. After the electrode 11 is input from the feed end 311, the electrode 11 moves in sequence along the top of the feed roller 21, above the first guide roller 22, below the second guide roller 23 and above the discharge roller 24, and finally the electrode 11 is output from the discharge end 331. The conveying channel 3 includes a first channel 31, a second channel 32 and a third channel 33. One end of the second channel 32 is connected to one end of the first channel 31, and the other end of the first channel 31 is the feed end 311; the other end of the second channel 32 is connected to one end of the third channel 33, and the other end of the third channel 33 is the discharge end 331. The first channel 31 is located above the feed roller 21 and above the first guide roller 22, the second channel 32 is located above the first guide roller 22 and below the second guide roller 23, and the third channel 33 is located below the second guide roller 23 and above the discharge roller 24. An upper debubbling assembly 8 is installed above the second channel 32, and the upper debubbling assembly 8 is used to eliminate bubbles on the upper surface of the electrode 11. A lower debubble assembly 9 is installed below the second channel 32. The lower debubble assembly 9 is used to eliminate bubbles on the lower surface of the electrode 11. As the electrode 11 is transported from the feed end 311 to the discharge end 331, it passes through the first channel 31, the second channel 32, and the third channel 33 in sequence. As the electrode 11 passes through the second channel 32, the upper debubble assembly 8 eliminates bubbles on the upper surface of the electrode 11, while the lower debubble assembly 9 eliminates bubbles on the lower surface of the electrode 11, thereby reducing the risk of bubbles on the surface of the electrode 11 causing lithium deposition.
[0031] Reference Figures 1 to 3The upper debubble assembly 8 includes an upper laser 81, an upper air knife 82, and an upper air duct 83. The upper laser 81, the upper air knife 82, and the upper air duct 83 are all located above the second channel 32. The upper laser 81 and the upper air knife 82 are both mounted on the frame 1, and the upper air knife 82 is located on the side of the upper laser 81 away from the feed end 311. The emission end of the upper laser 81 and the air inlet end of the upper air knife 82 are both facing the second channel 32. The air outlet end of the upper air knife 82 is connected to one end of the upper air duct 83, and the other end of the upper air duct 83 is connected to the exhaust device. The upper laser 81 emits a laser to break the bubbles on the upper surface of the electrode 11, and a negative pressure is generated at the air inlet end of the upper air knife 82, which absorbs the bubble powder remaining after the bubbles are broken, thereby achieving the effect of eliminating bubbles on the upper surface of the electrode 11.
[0032] Reference Figures 1 to 4 The lower-layer debubble removal component 9 includes a lower-layer laser 91, a lower-layer air knife 92, and a lower-layer air duct 93. The lower-layer laser 91, the lower-layer air knife 92, and the lower-layer air duct 93 are all located below the second channel 32. The lower-layer laser 91 and the lower-layer air knife 92 are both mounted on the frame 1, and the lower-layer air knife 92 is located on the side of the lower-layer laser 91 away from the feed end 311. The emission end of the lower-layer laser 91 and the air inlet end of the lower-layer air knife 92 are both facing the second channel 32. The air outlet end of the lower-layer air knife 92 is connected to one end of the lower-layer air duct 93, and the other end of the lower-layer air duct 93 is connected to the exhaust device. The lower-layer laser 91 emits a laser to break the bubbles on the lower surface of the electrode 11, and a negative pressure is generated at the air inlet end of the lower-layer air knife 92, which absorbs the bubble powder remaining after the bubbles are broken, thereby achieving the effect of eliminating bubbles on the lower surface of the electrode 11.
[0033] Reference Figure 1 and Figure 2 A first camera 4 is installed above the first channel 31. When the electrode 11 passes through the first channel 31, the first camera 4 photographs the upper surface of the electrode 11 to obtain the size, shape, color and position of the bubbles on the upper surface of the electrode 11, so that the upper debubble component 8 can operate according to the bubble information collected by the first camera 4. A second camera 5 is installed below the first channel 31. When the electrode 11 passes through the first channel 31, the second camera 5 photographs the lower surface of the electrode 11 to obtain the size, shape, color and position of the bubbles on the lower surface of the electrode 11, so that the lower debubble component 9 can operate according to the bubble information collected by the first camera 4.
[0034] Reference Figure 1 and Figure 2A third camera 6 is installed above the third channel 33. When the electrode 11 passes through the third channel 33, the third camera 6 photographs the upper surface of the electrode 11, re-inspects the upper surface of the electrode 11, and detects whether there are any bubbles remaining on the upper surface of the electrode 11. A fourth camera 7 is installed below the third channel 33. When the electrode 11 passes through the third channel 33, the fourth camera 7 photographs the lower surface of the electrode 11, re-inspects the lower surface of the electrode 11, and detects whether there are any bubbles remaining on the lower surface of the electrode 11.
[0035] The operating principle of the lithium battery electrode surface treatment device according to the embodiment of the present application is as follows: When the electrode 11 is transferred from the feed end 311 to the discharge end 331, the electrode 11 passes through the first channel 31, the second channel 32, and the third channel 33 in sequence. As the electrode 11 passes through the first channel 31, the first camera 4 photographs the upper surface of the electrode 11 to obtain the size, shape, color, and location of the bubbles on the upper surface of the electrode 11; the second camera 5 photographs the lower surface of the electrode 11 to obtain the size, shape, color, and location of the bubbles on the lower surface of the electrode 11. When the electrode 11 passes through the second channel 32, the upper laser 81 emits a laser to break the bubbles on the upper surface of the electrode 11, and the upper air knife 82 generates a negative pressure at the air inlet end, which absorbs the bubble powder remaining after the bubbles are broken, thereby eliminating the bubbles on the upper surface of the electrode 11; the lower laser 91 emits a laser to break the bubbles on the lower surface of the electrode 11, and the lower air knife 92 generates a negative pressure at the air inlet end, which absorbs the bubble powder remaining after the bubbles are broken, thereby eliminating the bubbles on the lower surface of the electrode 11. When the electrode 11 passes through the third channel 33, the third camera 6 photographs the upper surface of the electrode 11, re-inspects the upper surface of the electrode 11, and detects whether there are any bubbles remaining on the upper surface of the electrode 11; the fourth camera 7 photographs the lower surface of the electrode 11, re-inspects the lower surface of the electrode 11, and detects whether there are any bubbles remaining on the lower surface of the electrode 11. This reduces the possibility that bubbles on the surface of the electrode 11 will cause lithium deposition on the electrode 11.
[0036] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. A lithium battery electrode surface treatment device, comprising a frame, characterized in that: A guide assembly is provided on the frame, and the guide assembly is used to form a conveying channel, one end of the conveying channel is a feed end, and the other end of the conveying channel is a discharge end. The conveying channel is used to transport the electrode along the conveying channel from the feed end to the discharge end. An upper debubble assembly is provided above the conveying channel, and the upper debubble assembly is used to eliminate bubbles on the upper surface of the electrode. A lower debubble assembly is provided below the conveying channel, and the lower debubble assembly is used to eliminate bubbles on the lower surface of the electrode.
2. The lithium battery electrode surface treatment device according to claim 1, characterized in that: The guide assembly includes a feed roller, a first guide roller, a second guide roller and a discharging roller, and the feed roller, the first guide roller, the second guide roller and the discharging roller are all rotatably arranged on the frame, the first guide roller and the second guide roller are both located between the feed roller and the discharging roller, the first guide roller is located between the feed roller and the second guide roller, the second guide roller is located between the first guide roller and the discharging roller, the first guide roller is located obliquely above the feed roller, the second guide roller is located obliquely below the first guide roller, and the discharging roller is located obliquely above the second guide roller, the conveying channel is arranged above the feed roller, above the first guide roller, below the second guide roller and above the discharging roller, the feed end is close to the feed roller, and the discharging end is close to the discharging roller.
3. The lithium battery electrode surface treatment device according to claim 2, characterized in that: The conveying channel includes a first channel, a second channel and a third channel, one end of the second channel is connected with one end of the first channel, the other end of the first channel is a feed end, the other end of the second channel is connected with one end of the third channel, and the other end of the third channel is a discharge end, the first channel is located above the feed roller and above the first guide roller, the second channel is located above the first guide roller and below the second guide roller, the third channel is located below the second guide roller and above the discharge roller, the upper debubbling assembly is located above the second channel, and the lower debubbling assembly is located below the second channel.
4. The lithium battery electrode surface treatment device according to claim 3, characterized in that: The upper debubble assembly includes an upper laser, which is connected to the frame and located above the second channel. The emission end of the upper laser faces the second channel.
5. The lithium battery pole piece surface treatment device according to claim 4, characterized in that: The upper defoaming component also includes an upper air knife and an upper air duct, both of which are located above the second channel. The upper air knife is located on the side of the upper laser away from the feed end. The upper air knife is connected to the frame, the air inlet end of the upper air knife faces the second channel, and the air outlet end of the upper air knife is connected to the upper air duct.
6. The lithium battery electrode surface treatment device according to claim 3, characterized in that: The lower layer debubble assembly includes a lower layer laser, which is connected to the frame and located below the second channel. The emission end of the lower layer laser faces the second channel.
7. The lithium battery electrode surface treatment device according to claim 6, characterized in that: The lower-layer defoaming component also includes a lower-layer air knife and a lower-layer air duct, both of which are located below the second channel. The lower-layer air knife is located on the side of the lower-layer laser away from the feed end. The lower-layer air knife is connected to the frame, the air inlet end of the lower-layer air knife faces the second channel, and the air outlet end of the lower-layer air knife is connected to the lower-layer air duct.
8. The lithium battery pole piece surface treatment equipment according to claim 3, characterized in that: A first camera is disposed above the first channel, and a second camera is disposed below the first channel. Both the first camera and the second camera are used to photograph the pole piece in the first channel.
9. The lithium battery pole piece surface treatment device according to claim 3, characterized in that: A third camera is arranged above the third channel, and a fourth camera is arranged below the third channel. Both the third camera and the fourth camera are used to photograph the pole piece in the third channel.