Liquid injection nozzle and liquid injection device

Abstract

The liquid injection nozzle is provided with a top surface and a bottom surface which are oppositely arranged in the thickness direction, the liquid injection nozzle is provided with a liquid injection channel in the thickness direction of the liquid injection nozzle, the top surface is provided with a liquid inlet communicated with the liquid injection channel, and the bottom surface is provided with a liquid outlet communicated with the liquid injection channel. The liquid outlet extends in the width direction of the liquid injection nozzle to be in a long strip shape and is used for being aligned with the liquid injection hole of the battery so that the liquid outlet can compensate for the deviation of the liquid injection hole of the battery in the rotating process, the liquid outlet can be aligned with the liquid injection hole of the battery all the time, the deviation between the liquid injection hole of the battery and the liquid injection nozzle in the rotating process is avoided, and the service life of the battery is prolonged. The injection effect of the liquid injection nozzle relative to the liquid injection hole of the battery is guaranteed, the situation that the liquid injection amount of the liquid injection nozzle relative to the battery is insufficient or liquid cannot be injected is prevented, defective products of the battery are reduced, reworking or scrapping of the battery is avoided, and the processing cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of liquid injection device technology, and more particularly to a liquid injection nozzle and liquid injection device. Background Technology

[0002] With the development of technology, electrolyte injection devices are used to inject electrolyte into batteries. In the existing technology, the existing electrolyte injection device is equipped with an injection nozzle, which has an outlet. The outlet is circular and is aligned with the battery's injection hole to inject electrolyte. However, the battery's injection hole will deviate from the outlet during rotation, resulting in poor injection effect of the existing injection nozzle relative to the battery's injection hole. Summary of the Invention

[0003] One object of the present invention is to provide an injection nozzle and an injection device, which aims to solve the technical problem that the injection hole of the battery deviates from the outlet during rotation, resulting in poor injection effect of the existing injection nozzle relative to the injection hole of the battery.

[0004] To achieve the above objectives, the present invention provides a solution as follows: a liquid injection nozzle having a top surface and a bottom surface disposed opposite to each other in the thickness direction, a liquid injection channel being formed along the thickness direction of the nozzle, an inlet being formed on the top surface communicating with the liquid injection channel, an outlet being formed on the bottom surface communicating with the liquid injection channel, and the outlet extending into a strip shape along the width direction of the nozzle, the outlet being used to align with the liquid injection hole of the battery.

[0005] Optionally, the liquid outlet includes a first side, a second side, a third side, and a fourth side connected end to end in sequence. The first side and the third side are opposite to each other and extend along the width direction of the injection nozzle. The first side and the third side are both bent in the same direction.

[0006] Optionally, the first side and the third side are parallel to each other; or, the center of the first side and the center of the third side coincide.

[0007] Optionally, the second side and the fourth side are opposite to each other, the distance between the second side and the edge of the bottom surface is L1 mm, and the distance between the fourth side and the edge of the bottom surface is L2 mm, where 2≤L1=L2≤10.

[0008] Optionally, the area of ​​the liquid outlet is S1, the area of ​​the bottom surface is S2, and 0.3≤S1 / S2≤0.5.

[0009] Optionally, the liquid inlet is circular.

[0010] Optionally, the peripheral wall of the injection channel gradually expands outward from the outlet to the inlet.

[0011] Optionally, the bottom surface of the injection nozzle is provided with a protrusion surrounding the outlet, the protrusion being made of silicone and used to support the battery.

[0012] Optionally, the protrusion includes a first ring and a second ring, which surround the liquid outlet, with the first ring positioned between the second ring and the liquid outlet, and the height of the first ring being less than the height of the second ring.

[0013] To achieve the above objectives, the present invention provides a solution: a liquid injection device, the liquid injection device comprising: a liquid injection machine and the liquid injection nozzle, the liquid injection nozzle being connected to the liquid outlet end of the liquid injection machine, the liquid injection nozzle being used to align with the liquid injection hole of the battery.

[0014] The beneficial effects of this invention are as follows:

[0015] This utility model provides an injection nozzle and injection device. The injection nozzle has a top surface and a bottom surface arranged opposite each other in the thickness direction. An injection channel is formed along the thickness direction of the injection nozzle. An inlet communicating with the injection channel is formed on the top surface, and an outlet communicating with the injection channel is formed on the bottom surface. The outlet extends into a strip shape along the width direction of the injection nozzle. The outlet is used to align with the injection hole of the battery, so as to compensate for the deviation of the injection hole of the battery during rotation. This ensures that the outlet is always aligned with the injection hole of the battery, avoids the deviation of the injection hole of the battery from the injection nozzle during rotation, ensures the injection effect of the injection nozzle relative to the injection hole of the battery, prevents insufficient injection or inability to inject liquid, reduces the generation of defective batteries, avoids battery rework or scrap, and reduces processing costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the assembly structure of the injection nozzle provided in an embodiment of the present invention;

[0018] Figure 2 This is a bottom view of the assembly structure of the injection nozzle provided in an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the injection nozzle provided in an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of another state assembly structure of the injection nozzle provided in an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the assembly structure of the injection nozzle provided in the second embodiment;

[0022] Figure 6 This is a schematic diagram of the cross-sectional structure of the injection nozzle provided in the second embodiment;

[0023] Figure 7 It shows Figure 6 A magnified view of a portion of point A in the middle.

[0024] Explanation of icon numbers:

[0025] 100. Injection nozzle;

[0026] 10. Top surface; 11. Liquid inlet;

[0027] 20. Bottom surface; 21. Liquid outlet; 211. First side; 212. Second side; 213. Third side; 214. Fourth side; 22. Protrusion; 221. First ring; 222. Second ring;

[0028] 30. Liquid channel. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1 to 7 As shown, Figure 1 This is a schematic diagram of the assembly structure of the injection nozzle provided in an embodiment of the present invention. Figure 2 This is a bottom view of the assembly structure of the injection nozzle provided in an embodiment of the present invention. Figure 3 This is a schematic cross-sectional view of the injection nozzle provided in an embodiment of the present invention. Figure 4 This is a schematic diagram of another assembly structure of the injection nozzle provided in an embodiment of the present invention. Figure 5 This is a schematic diagram of the assembly structure of the injection nozzle provided in the second embodiment. Figure 6 This is a schematic diagram of the cross-sectional structure of the injection nozzle provided in the second embodiment. Figure 7 It shows Figure 6 A magnified view of a portion of point A in the middle.

[0031] Please refer to the attached document. Figures 1-4This utility model application provides an injection nozzle 100 for injecting electrolyte into a battery.

[0032] Please refer to the attached document. Figures 1-4 In this utility model application, the injection nozzle 100 has a top surface 10 and a bottom surface 20 disposed opposite each other in the thickness direction. The top surface 10 is located on the upper side of the injection nozzle 100, and the bottom surface 20 is located on the lower side of the injection nozzle 100. The injection nozzle 100 has an injection channel 30 along its thickness direction, and the injection channel 30 is arranged vertically. The top surface 10 has an inlet 11 communicating with the injection channel 30, and the bottom surface 20 has an outlet 21 communicating with the injection channel 30, so that the inlet 11, the injection channel 30 and the outlet 21 are connected in sequence, thereby facilitating the flow of electrolyte through the inlet 11, the injection channel 30 and the outlet 21 in sequence. The outlet 21 extends into a long strip along the width of the injection nozzle 100. The outlet 21 is aligned with the battery's injection hole to compensate for any deviation in the injection hole during rotation. This ensures the outlet 21 remains aligned with the injection hole, preventing misalignment between the injection hole and the nozzle 100 during rotation and guaranteeing effective injection. This prevents insufficient or no injection from the nozzle 100, reducing defective batteries, avoiding rework or scrap, and lowering processing costs. Optionally, the long strip can be crescent-shaped.

[0033] Please refer to the attached document. Figures 1-3 In the first embodiment, the liquid outlet 21 includes a first side 211, a second side 212, a third side 213, and a fourth side 214 connected end to end, so that the first side 211, the second side 212, the third side 213, and the fourth side 214 can surround and form an elongated liquid outlet 21, ensuring the injection effect of the liquid outlet 21 relative to the battery's injection hole. The first side 211 and the third side 213 are opposite each other and extend along the width direction of the injection nozzle 100, and the first side 211 and the third side 213 are both bent in the same direction, so that the first side 211, the second side 212, the third side 213, and the fourth side 214 can surround and form a crescent shape. The crescent-shaped liquid outlet 21 compensates for deviations in the battery's filling hole during rotation, preventing abnormal injection from the crescent-shaped outlet 21 relative to the battery's filling hole and ensuring effective injection. This prevents insufficient or no liquid injection from the crescent-shaped outlet 21, reducing the production of defective batteries, avoiding rework or scrap, and lowering processing costs.

[0034] Please refer to the attached document. Figures 1-3Specifically, the first side 211 and the third side 213 are parallel to each other; or, the center of the first side 211 and the center of the third side 213 coincide, so that the electrolyte injected by the outlet 21 is more even, thereby making the alignment of the outlet 21 with the battery's injection hole more accurate and with a higher probability of alignment, ensuring the injection effect of the outlet 21 with the battery's injection hole.

[0035] Please refer to the attached document. Figures 1-3 Specifically, the second side 212 and the fourth side 214 are opposite each other to ensure that the distance between the first side 211 and the third side 213 is uniform along the length direction, thus ensuring that the width of both sides of the outlet 21 is consistent. The distance between the second side 212 and the edge of the bottom surface 20 is L1 mm, and the distance between the fourth side 214 and the edge of the bottom surface 20 is L2 mm, where 2 ≤ L1 = L2 ≤ 10. In this case, L1 can be 2, 3, 4, 5, 6, 7, 8, 9, or 10 mm, and L2 can be 2, 3, 4, 5, 6, 7, 8, 9, or 10 mm. Within the range of 2 ≤ L1 = L2 ≤ 10, the overall strength of the outlet 21 is ensured, preventing damage to the outlet 21, guaranteeing the maximum width of the outlet 21, and improving the fit between the outlet 21 and the battery's injection hole. When L1 = L2 > 10, the width of the outlet 21 is relatively narrow, and the outlet 21 is prone to deformation when it mates with the battery's filling hole, resulting in easy leakage of electrolyte from the outlet 21. When L1 = L2 < 2, the outlet 21 cannot mate with the battery's filling hole, affecting the injection effect of the outlet 21 relative to the battery's filling hole.

[0036] Please refer to the attached document. Figures 1-3 Specifically, the area of ​​the outlet 21 is S1, and the area of ​​the bottom surface 20 is S2, where 0.3 ≤ S1 / S2 ≤ 0.5. Therefore, S1 / S2 can be 0.3, 0.4, or 0.5, ensuring that the outlet 21 matches the battery's filling hole. When the area of ​​the battery's filling hole is larger, the area of ​​the outlet 21 is larger, and consequently, the area of ​​the bottom surface 20 is larger. Conversely, when the area of ​​the battery's filling hole is smaller, the area of ​​the outlet 21 is smaller, and consequently, the area of ​​the bottom surface 20 is smaller.

[0037] Please refer to the attached document. Figure 4 The inlet 11 is circular to facilitate the matching of the injection port of the injection machine with the inlet 11, thereby making it easier to assemble the injection port of the injection machine with the inlet 11. This facilitates the flow of the electrolyte output from the injection port of the injection machine to the inlet 11, ensuring the injection effect of the injection machine relative to the injection nozzle 100 and improving the smoothness of the flow of the electrolyte of the injection machine relative to the injection nozzle 100.

[0038] Furthermore, the peripheral wall of the injection channel 30 gradually expands outward from the outlet 21 to the inlet 11. This allows the peripheral wall of the injection channel 30 to slope downward, thus facilitating a gradual decrease in the diameter of the injection channel 30 from top to bottom. This, in turn, allows the electrolyte to flow at a gradually increasing downward velocity relative to the injection channel 30, improving the injection efficiency of the outlet 21 relative to the battery's injection hole. Simultaneously, the injection channel 30 is arranged vertically, with the inlet 11 positioned above the injection channel 30 and the outlet 21 positioned below it. This ensures that the electrolyte flows downward from the inlet 11, the injection channel 30, and the outlet 21 towards the battery's injection hole, guaranteeing electrolyte replenishment for the battery.

[0039] Please refer to the attached document. Figures 5-7 In the second embodiment, the bottom surface 20 of the injection nozzle 100 is provided with a protrusion 22 surrounding the outlet 21. The protrusion 22 is made of silicone and is used to hold the battery. This allows the bottom surface 20 of the injection nozzle 100 to achieve a sealed contact with the upper surface of the battery through the protrusion 22, ensuring a sealing effect at the connection between the injection nozzle 100 and the battery and preventing leakage of the electrolyte injected by the injection nozzle 100. Furthermore, it prevents insufficient electrolyte injection by the injection nozzle 100 relative to the battery, reduces the generation of defective batteries, avoids battery rework or scrapping, and reduces processing costs.

[0040] Please refer to the attached document. Figures 5-7 At this point, the protrusion 22 includes a first ring 221 and a second ring 222, which surround the liquid outlet 21 respectively. The first ring 221 is positioned between the second ring 222 and the liquid outlet 21. This allows the injection nozzle 100 to achieve a double-layer seal relative to the battery through the first ring 221 and the second ring 222, further improving the sealing effect of the injection nozzle 100 relative to the battery. The height of the first ring 221 is less than the height of the second ring 222, so that the fit between the second ring 222 and the battery is greater than the fit between the first ring 221 and the battery. This results in a better sealing effect of the second ring 222 relative to the first ring 221, and consequently, a better leak-proof effect of the second ring 222 relative to the first ring 221.

[0041] In the third embodiment, a liquid injection device includes a liquid injection machine and a liquid injection nozzle 100. The liquid injection nozzle 100 is connected to the liquid outlet of the liquid injection machine so that the electrolyte output from the liquid outlet of the liquid injection machine flows to the liquid injection nozzle 100. The liquid injection nozzle 100 is used to align with the liquid injection hole of the battery so that the electrolyte in the liquid injection nozzle 100 flows into the battery through the liquid injection hole, thereby facilitating the liquid injection machine to inject electrolyte into the battery through the liquid injection nozzle 100 to replenish the electrolyte in the battery.

[0042] The beneficial effects of this invention are as follows:

[0043] This utility model provides an injection nozzle 100 and an injection device. The injection nozzle 100 has a top surface 10 and a bottom surface 20 arranged opposite each other in the thickness direction. The injection nozzle 100 has an injection channel 30 along its thickness direction. The top surface 10 has an inlet 11 communicating with the injection channel 30, and the bottom surface 20 has an outlet 21 communicating with the injection channel 30. The outlet 21 extends into a strip shape along the width direction of the injection nozzle 100. The outlet 21 is used to align with the injection hole of the battery so that the outlet 21 can compensate for the deviation of the injection hole of the battery during rotation. This ensures that the outlet 21 is always aligned with the injection hole of the battery, avoids deviation between the injection hole of the battery and the injection nozzle 100 during rotation, ensures the injection effect of the injection nozzle 100 relative to the injection hole of the battery, prevents insufficient or no injection of liquid from the injection nozzle 100 relative to the battery, reduces the generation of defective batteries, avoids battery rework or scrap, and reduces processing costs.

[0044] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0045] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0046] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0047] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A liquid injection nozzle, characterized in that, The injection nozzle has a top surface and a bottom surface that are opposite to each other in the thickness direction. The injection nozzle has an injection channel along its thickness direction. The top surface has an inlet that communicates with the injection channel. The bottom surface has an outlet that communicates with the injection channel. The outlet extends into a strip shape along the width direction of the injection nozzle. The outlet is used to align with the injection hole of the battery.

2. The injection nozzle according to claim 1, characterized in that, The liquid outlet includes a first side, a second side, a third side, and a fourth side connected end to end in sequence. The first side and the third side are opposite to each other and extend along the width direction of the injection nozzle. The first side and the third side are both bent in the same direction.

3. The injection nozzle according to claim 2, characterized in that, The first side and the third side are parallel to each other; or, the center of the first side and the center of the third side coincide.

4. The injection nozzle according to claim 2, characterized in that, The second side and the fourth side are opposite each other. The distance between the second side and the edge of the bottom surface is L1 mm, and the distance between the fourth side and the edge of the bottom surface is L2 mm, where 2 ≤ L1 = L2 ≤ 10.

5. The injection nozzle according to any one of claims 1 to 4, characterized in that, The area of ​​the liquid outlet is S1, the area of ​​the bottom surface is S2, and 0.3 ≤ S1 / S2 ≤ 0.

5.

6. The injection nozzle according to any one of claims 1 to 4, characterized in that, The liquid inlet is circular.

7. The injection nozzle according to any one of claims 1 to 4, characterized in that, The peripheral wall of the injection channel gradually expands outward from the outlet to the inlet.

8. The injection nozzle according to any one of claims 1 to 4, characterized in that, The bottom surface of the injection nozzle is provided with a protrusion surrounding the outlet. The protrusion is made of silicone and is used to support the battery.

9. The injection nozzle according to claim 8, characterized in that, The protrusion includes a first ring and a second ring, which surround the liquid outlet respectively. The first ring is located between the second ring and the liquid outlet, and the height of the first ring is less than the height of the second ring.

10. A liquid injection device, characterized in that, The liquid injection device includes: a liquid injection machine and a liquid injection nozzle as described in any one of claims 1 to 9, wherein the liquid injection nozzle is connected to the liquid outlet end of the liquid injection machine, and the liquid injection nozzle is used to align with the liquid injection hole of the battery.

Images