Dispensing head for coating ceramic glue in lithium battery production
By designing a lithium battery dispensing head with a width of 0.10-0.35mm glue outlet and chamfered structure, the problem of ceramic layer not meeting the standards and poor insulation and thermal insulation effect is solved, the quality and safety of lithium battery production are improved, and the battery is avoided Overcharge, overdischarge and short circuit risks.
Patent Information
- Application Number
- CN202420804052.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-17
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-17
AI Technical Summary
In the production of existing lithium batteries, the dispensing head can easily lead to the appearance, width, thickness and gap of the ceramic surface on the electrode sheet during use, affecting the battery production efficiency and quality, and the amount of ceramic coated is too small, resulting in insulation and thermal insulation effects. Bad, it may cause battery overcharging, overdischarge and overlapping short circuits between positive and negative electrodes, resulting in thermal runaway, fire or even explosion.
A dispensing head for lithium battery production of ceramic glue is designed. The width of the rubber outlet is set at 0.10-0.35mm. The dispensing part and connection part with a rectangular structure are used. The bottom surface is chamfered, and the flowing passage is a column. The shape ensures the control of the amount of glue output and the flatness of the ceramic layer, and prevents sharp contact between the dispensing part and the ceramic layer and foil shaking.
By controlling the amount of glue and the size of the ceramic layer, avoiding wave edges and splitting of the edges of the ceramic layer, ensuring the insulation and heat insulation effect of the ceramic layer, improving the production efficiency and quality of lithium batteries, and reducing the risks of battery overcharge, overdischarge and short circuit .
Smart Images
Figure CN222220122U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lithium battery production, in particular to a glue dispensing head used for coating ceramic glue in lithium battery production. Background Art
[0002] Since ceramic glue is insulating and ceramic has high thermal stability and low thermal conductivity, it is necessary to coat the pole piece with insulating ceramic glue during the production process of lithium-ion batteries to prevent short circuits caused by the overlap of the positive and negative electrodes and the expansion of certain thermal runaway points in the battery to form overall thermal runaway, thereby improving the safety of the battery. In the process of coating the pole piece with ceramic glue, the dispensing head of the dispensing machine is first placed perpendicular to the pole piece, and the ceramic glue liquid is transported from the liquid storage tank of the dispensing machine to the dispensing head. The ceramic glue liquid is discharged from the dispensing head outlet to dispense the pole piece. However, during the use of the current dispensing head of the dispensing machine, it is easy to cause the ceramic appearance, width, thickness and gap on the surface of the pole piece to be substandard, which affects the production efficiency and quality of the battery. Once the amount of ceramic applied is too small, the insulation and heat insulation effects are not good, and it is easy for the battery production process to cause thermal runaway due to overcharging, over-discharging and short circuits between the positive and negative electrodes, leading to battery fires and even explosions. Utility Model Content
[0003] Based on this, the dispensing head of the current dispensing machine is likely to cause the ceramic appearance, width, thickness and gap on the surface of the electrode to be substandard during use, affecting the production efficiency and quality of the battery. Once the amount of ceramic applied is too small, the insulation and heat insulation effects are poor, and the battery production process is prone to thermal runaway due to overcharging, over-discharging and short circuit of the positive and negative electrodes, leading to battery fires and even explosions. It is necessary for the utility model to propose a dispensing head for applying ceramic glue in lithium battery production.
[0004] The utility model proposes a glue dispensing head for coating ceramic glue in lithium battery production, which includes a connecting part and a glue dispensing part formed at the bottom of the connecting part, the connecting part is provided with a glue flow channel extending from its top surface to its interior, the glue dispensing part is penetrated by a glue outlet connected to the glue flow channel, and the width of the glue outlet is 0.10-0.35mm.
[0005] The utility model provides a dispensing head for coating ceramic glue in lithium battery production, the width of the glue outlet is set at 0.10-0.35mm, and the glue output is easy to control, so that the size of the coated ceramic and the gap between the ceramic layer and the material area can be controlled, thereby avoiding the generation of wavy edges and splits on the edge of the ceramic layer, ensuring that the ceramic appearance, width, thickness and gap on the surface of the pole piece meet the standards, and improving the quality of the ceramic glue coating.
[0006] As a further improvement of the above scheme of the utility model, the glue dispensing part is a rectangular structure, the glue outlet has a rectangular cross-section, the width direction of the glue outlet is consistent with the width direction of the glue dispensing part and the center line of the glue outlet coincides with the center line of the glue dispensing part.
[0007] As a further improvement of the above solution of the utility model, both sides of the bottom surface of the glue dispensing part in the length direction are formed with chamfered corners.
[0008] As a further improvement of the above solution of the utility model, both sides of the bottom surface of the glue dispensing portion in the width direction are chamfered.
[0009] As a further improvement of the above-mentioned scheme of the utility model, the bottom surface of the connecting part is a rectangular structure, the glue dispensing part is connected to the bottom surface of the connecting part and the center line of the glue dispensing part coincides with the center line of the bottom surface of the connecting part, the length of the glue dispensing part is smaller than the length of the bottom surface of the connecting part and the width of the glue dispensing part is smaller than the width of the bottom surface of the connecting part.
[0010] As a further improvement of the above solution of the utility model, the bottom of the connecting part is formed with four chamfered surfaces connected end to end in sequence, the four chamfered surfaces correspond one by one to the four edges of the bottom surface of the connecting part and all the four chamfered surfaces extend to the bottom surface of the connecting part.
[0011] As a further improvement of the above solution of the utility model, the connecting part and the glue dispensing part are integrally formed.
[0012] As a further improvement of the above solution of the utility model, the glue flow channel is a cylindrical channel.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] 1. The glue outlet width of the glue dispensing head for coating ceramic glue in lithium battery production proposed by the utility model is set at 0.10-0.35mm, which is easy to control the glue output, so that the size of the coated ceramic and the gap between the ceramic layer and the material area can be controlled, thereby avoiding the generation of wavy edges and splits on the edge of the ceramic layer, ensuring that the ceramic appearance, width, thickness and gap on the surface of the pole piece meet the standards, and improving the quality of the ceramic glue coating.
[0015] 2. The long side and the wide side of the bottom surface of the glue dispensing part of the utility model are chamfered to reduce the sharpness of the long side edge of the glue dispensing part and reduce the contact area between the wide side edge of the glue dispensing part and the ceramic layer. This can effectively prevent the foil from shaking during the production process, and the long and short sides of the glue dispensing part from scratching the ceramic layer, thereby improving the quality of applying ceramic glue.
[0016] 3. The bottom of the connection part of the utility model is formed with four chamfered surfaces connected end to end in sequence, which can effectively prevent the foil from shaking during the production process and the side of the glue dispensing head from scraping the material area, thereby improving the quality of ceramic glue coating.
[0017] 4. The structural design of the utility model effectively improves the poor appearance of the ceramic layer of the electrode (wavy edges, scratches, splits, etc.) and the substandard gap, width and thickness of the ceramic layer, improves the quality of the ceramic glue coating, ensures the insulation and heat insulation effect of the ceramic layer, thereby improving the production efficiency and quality of lithium batteries, and the overall structure of the utility model is simple, efficient and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 A schematic diagram of the structure of a dispensing head for coating ceramic glue in lithium battery production proposed in an embodiment of the utility model;
[0019] Figure 2 Another perspective view of a dispensing head for coating ceramic glue in lithium battery production proposed in an embodiment of the utility model;
[0020] Figure 3 A front view of a dispensing head for applying ceramic glue to lithium battery production proposed in an embodiment of the utility model;
[0021] Figure 4 A side view of a dispensing head for applying ceramic glue in lithium battery production proposed in an embodiment of the utility model;
[0022] Figure 5 The present invention is a working principle diagram of a dispensing head for coating ceramic glue in lithium battery production according to an embodiment of the present invention.
[0023] Figure numerals: 1, connecting part; 11, glue flow channel; 12, chamfered surface; 2, glue dispensing part; 21, glue outlet; 3, material area; 4, ceramic layer. DETAILED DESCRIPTION
[0024] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively in conjunction with specific embodiments below. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.
[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.
[0026] In view of the fact that the dispensing head of the current dispensing machine may easily lead to the phenomenon that the ceramic appearance, width, thickness and gap on the surface of the electrode are not up to standard during use, affecting the production efficiency and quality of the battery. Once the amount of ceramic applied is too small, the insulation and heat insulation effects are poor, and the battery production process is prone to thermal runaway due to overcharging, over-discharging and short circuit between the positive and negative electrodes, leading to battery fire or even explosion. A dispensing head for applying ceramic glue in lithium battery production is proposed, which reduces the width of the glue outlet 21, reduces the sharpness of the long and short sides of the dispensing part 2, prevents the dispensing part from scratching the ceramic layer, reduces the contact between the side of the dispensing head and the electrode, and prevents the side of the dispensing head from scraping the material area 3 of the electrode during production.
[0027] Reference Figure 1-Figure 4 The dispensing head for applying ceramic glue to lithium battery production in this embodiment includes a connecting portion 1 and a dispensing portion 2 integrally formed at the bottom of the connecting portion 1 .
[0028] The connecting portion 1 is provided with a glue flow channel 11 extending from its top surface to its interior. In the present embodiment, the glue flow channel 11 is a cylindrical channel. Of course, in other embodiments, as long as the structural stability requirements of the glue dispensing head are met, the glue flow channel 11 may also be a channel with a cross-section of a square, a rectangle, a triangle, etc. The bottom surface of the connecting portion 1 is a rectangular structure. Four chamfered surfaces 12 connected end to end are formed at the bottom of the connecting portion 1. The four chamfered surfaces 12 correspond one by one to the four edges of the bottom surface of the connecting portion 1, and the four chamfered surfaces 12 extend to the bottom surface of the connecting portion 1. By setting the chamfered surface 12, the contact between the side surface of the glue dispensing head and the pole piece is reduced, and the side surface of the glue dispensing head is prevented from scraping the material area 3 of the pole piece.
[0029] The glue dispensing part 2 is a rectangular parallelepiped structure. The glue dispensing part 2 is connected to the bottom surface of the connecting part 1 and the center line of the glue dispensing part 2 coincides with the center line of the bottom surface of the connecting part 1. The length of the glue dispensing part 2 is less than the length of the bottom surface of the connecting part 1 and the width of the glue dispensing part 2 is less than the width of the bottom surface of the connecting part 1. The glue dispensing part 2 is provided with a glue outlet 21 connected to the glue flow channel 11. The width of the glue outlet 21 is 0.10-0.35mm, preferably 0.20mm. The glue outlet 21 has a rectangular cross-section. The width direction of the glue outlet 21 is consistent with the width direction of the glue dispensing part 2 and the center line of the glue outlet 21 coincides with the center line of the glue dispensing part 2. The glue outlet width of the glue dispensing head in this embodiment is set at 0.10-0.35mm, preferably 0.20mm. Compared with the existing glue dispensing head with a glue outlet width of 0.38mm, the glue dispensing head in this embodiment is easier to control the glue output, so that the size of the ceramic coating and the gap between the ceramic layer and the material area can be controlled, thereby avoiding the generation of wavy edges and splits on the edge of the ceramic layer, and improving the quality of the ceramic glue coating.
[0030] In this embodiment, both sides of the bottom surface of the glue dispensing part 2 in the length direction are formed with a chamfer R0.2, and both sides of the bottom surface of the glue dispensing part 2 in the width direction are formed with a chamfer 0.2, thereby reducing the contact surface between the long and short sides of the glue dispensing part 2 and the ceramic layer 4, and preventing the glue dispensing part 2 from scraping the ceramic layer 4.
[0031] It should be noted that the height, dispensing width and thickness of the dispensing head of this embodiment can be adjusted according to production requirements.
[0032] Combination Figure 5 When using this embodiment, the dispensing head is first placed perpendicular to the electrode and the length direction of the dispensing part 2 is arranged along the width direction of the electrode, and the electrode is kept at a certain distance from the dispensing head; the ceramic glue is transported from the liquid storage tank of the dispensing machine to the glue flow channel 11 of the dispensing head, and then squeezed out from the glue outlet 21, and then glue is applied to form a ceramic layer 4.
[0033] The structural design of the dispensing head in this embodiment effectively improves the poor appearance (wavy edges, scratches, splits, etc.) of the ceramic layer 4 of the electrode and the substandard gap, width and thickness of the ceramic layer, improves the quality of the ceramic glue coating, ensures the insulation and heat insulation effect of the ceramic layer 4, thereby improving the production efficiency and quality of lithium batteries. In addition, the overall structure of the utility model is simple, efficient and easy to operate.
[0034] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.
[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.
[0036] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0037] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A dispensing head for coating ceramic glue in lithium battery production, characterized in that: It includes a connecting part and a glue dispensing part formed at the bottom of the connecting part. The connecting part is provided with a glue flow channel extending from its top surface to its interior. The glue dispensing part is penetrated by a glue outlet connected to the glue flow channel. The width of the glue outlet is 0.10-0.35mm.
2. The dispensing head for coating ceramic glue in lithium battery production according to claim 1, characterized in that: The glue dispensing part is a rectangular parallelepiped structure, the glue outlet has a rectangular cross section, the width direction of the glue outlet is consistent with the width direction of the glue dispensing part, and the center line of the glue outlet coincides with the center line of the glue dispensing part.
3. The dispensing head for coating ceramic glue in lithium battery production according to claim 2, characterized in that: Both sides of the bottom surface of the dispensing part in the length direction are formed with rounded corners.
4. The dispensing head for coating ceramic glue in lithium battery production according to claim 2, characterized in that: Both sides of the bottom surface of the dispensing portion in the width direction are chamfered.
5. The dispensing head for coating ceramic glue in lithium battery production according to claim 2, characterized in that: The bottom surface of the connecting part is a rectangular structure, the glue dispensing part is connected to the bottom surface of the connecting part and the center line of the glue dispensing part coincides with the center line of the bottom surface of the connecting part, the length of the glue dispensing part is smaller than the length of the bottom surface of the connecting part and the width of the glue dispensing part is smaller than the width of the bottom surface of the connecting part.
6. The dispensing head for coating ceramic glue in lithium battery production according to claim 5, characterized in that: The bottom of the connection portion is formed with four chamfered surfaces which are connected end to end in sequence. The four chamfered surfaces correspond to the four edges of the bottom surface of the connection portion one by one and all of the four chamfered surfaces extend to the bottom surface of the connection portion.
7. The dispensing head for coating ceramic glue in lithium battery production according to claim 1, characterized in that: The connecting part and the glue dispensing part are integrally formed.
8. The dispensing head for coating ceramic glue in lithium battery production according to claim 1, characterized in that: The glue flow channel is a cylindrical channel.