Bubble guide sheet for storage battery liquid injection acid pot and storage battery liquid injection acid pot

Abstract

The utility model discloses a bubble leading sheet for a storage battery liquid injection acid pot and the storage battery liquid injection acid pot. According to the bubble guiding piece, the protruding bubble guiding strip is arranged on at least one of the two side faces of the bubble guiding piece body in the thickness direction, the knife edge structure which is gradually thickened upwards from the bottom of the bubble guiding piece is arranged at the bottom of the bubble guiding strip, and the sawtooth structure used for puncturing bubbles is further arranged above the knife edge structure of the bubble guiding strip. Through the arrangement of the sawtooth structure, the air resistance of the acid injection port can be eliminated, the active puncture of bubbles and the directional flow guide of the acid liquor are realized, the acid liquor is ensured to be uniformly distributed to each battery cell during battery formation, and the consistency of the acid amount and the concentration is improved.

Description

Technical Field

[0001] This utility model belongs to the field of storage battery production technology, specifically relating to a bubble sheet for a storage battery acid filling tank and a storage battery acid filling tank. Background Technology

[0002] During the process of adding acid and charging the battery, the acid filler is inserted into the top of the battery. The acid filler has an acid initiator (bubbling plate) which helps to expel the gas inside the battery and allow the electrolyte to enter the battery.

[0003] For example, utility model patent CN219959370U discloses a universal lead-acid battery acid filler, comprising: an acid filler bottle with an acid outlet; an acid-leading plate inserted into the acid outlet; and a plug that fixes the acid-leading plate to the acid outlet. The acid-leading plate has a set of protrusions, which, in use, engage with different sets of positioning slots to change the length of the acid-leading plate extending beyond the acid outlet.

[0004] The utility model patent with authorization announcement number CN208352426U discloses an acid-adding device for a graphene-based lead-carbon super battery. In the acid-adding plate, two fixed wings are symmetrically arranged on both sides of one end of the plate. The plate is integrally connected to the wider end of the nozzle through the two fixed wings. The plate is located inside the acid-adding pot. The two fixed wings are engaged with the groove on the inner wall of the nozzle of the pot and secured with a snap fastener. The nozzle is located outside the nozzle, and the narrower end of the nozzle extends into the vent hole of the battery to be acid-added.

[0005] In the aforementioned prior art, the acid-leading plate structure does not puncture the bubbles generated during the battery formation and charging process. Especially in the later stages of battery formation and charging, the bubbles generated from the top of the battery electrode group in the acid reservoir become smaller and are easily adsorbed into the cell cavity. When the size of the generated bubbles is similar to the single-sided diameter of the injection hole, and because the outer layer of the bubbles is a dilute sulfuric acid colloidal electrolyte with a certain viscosity, they will be completely adsorbed in the gap between the rubber nozzle and the lead-in plate, causing the bubbles to accumulate inside the battery and not be able to be discharged. In addition, before the acid is drained in the later stage of formation, the acid level drops significantly to 1 / 20-1 / 10 of the height of the acid reservoir. The amount of acid is very small, and the gravity pressure of the acid itself is low, which is similar to the pressure of the bubbles in the rubber nozzle. The acid in the acid reservoir cannot be drained. In the acid draining stage before the end of formation and charging, there is often a significant liquid level in the acid reservoir, but no acid can be extracted from the battery.

[0006] In existing technologies, the acid-leading plate structure may lead to uneven acid levels in the acid reservoir during the later stages of battery formation, resulting in significant differences in residual acid levels among batteries from the same batch during the acid extraction phase. Especially in the later stages of formation and charging, there is no ion exchange between the acid in the electrode groups and the acid in the reservoir, resulting in high acid density inside the electrode groups and low acid density in the reservoir. Even if the total weight of acid extracted is roughly the same, the density difference leads to a wider range of open-circuit voltages during static battery pairing (using open-circuit voltage), accompanied by sporadic high or low voltages. This reduces pairing efficiency. Batteries that cannot be paired require secondary recharging and reassembly, which increases the labor and electricity costs associated with recharging. Even with a well-matched battery pack, there are potential risks that may not be immediately apparent in the early stages of battery use. However, after about 100 cycles of use, the differences in acid concentration inside the batteries become more pronounced. For example, in a pack of six batteries, if one or more cells in one battery have a higher acid concentration than the others, that cell will experience concentration polarization earlier, accelerating the corrosion of the plates and causing the cell or individual battery to lag behind, thus affecting the discharge time and lifespan of the entire battery pack. Utility Model Content

[0007] This utility model addresses the aforementioned deficiencies in the prior art by providing a bubble-initiating plate and a battery acid filling tank.

[0008] This application first provides a bubble-initiating plate for a battery acid filling tank. The battery acid filling tank includes a tank body and a tank cover. The bottom surface of the tank body has an acid spout for dispensing acid. The acid spout has an acid spout rubber sleeve for connecting to the acid filling hole of the battery. The bubble-initiating plate includes a long, flat bubble-initiating plate body. At least one side of the two sides of the bubble-initiating plate body in the thickness direction has a protruding bubble-initiating strip. The bottom of the bubble-initiating strip has a blade structure that gradually thickens from the bottom of the bubble-initiating plate upwards. Above the blade structure, the bubble-initiating strip also has a serrated structure for piercing air bubbles.

[0009] Preferably, the serrated structure includes a plurality of serrations, with notches formed on the bubble strip and a serration formed between adjacent notches.

[0010] More preferably, the serrated structure on each side of the bubble strip includes 1 to 8 serrations.

[0011] More preferably, the serrations are arranged at an angle downwards.

[0012] More preferably, the angle between the saw teeth and the vertical direction is 30° to 80°.

[0013] Preferably, the bottom width of the bubble-inducing sheet body gradually increases from the bottom surface upwards to form a pointed tip.

[0014] Preferably, the bottom surface of the acid spout has a fixing groove, and the two sides of the bubble-inducing plate body are provided with fixing protrusions that extend into the fixing groove.

[0015] This application provides a battery acid filling pot, including a pot body and a pot cover. The bottom surface of the pot body has an acid spout for dispensing acid. The acid spout has an acid spout rubber sleeve for connecting to the acid filling hole of the battery. The battery acid filling pot also includes a bubble-inducing plate for the battery acid filling pot. The serrated structure corresponds to the inner sidewall of the acid spout.

[0016] This utility model has a bubble-inducing sheet with a protruding bubble-inducing strip on at least one side of the two sides of the bubble-inducing sheet body in the thickness direction. The bottom of the bubble-inducing strip has a blade structure that gradually thickens from the bottom of the bubble-inducing sheet upwards. Above the blade structure, the bubble-inducing strip also has a serrated structure for piercing bubbles. By setting the serrated structure, the air resistance at the acid injection port can be eliminated, and the active piercing of bubbles and the directional flow of acid can be realized. This ensures that the acid is evenly distributed to each cell of the battery during battery formation, and improves the consistency of acid quantity and concentration. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the bubble initiator installed in the battery's acid filling tank.

[0018] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0019] Figure 3 This is a schematic diagram of the structure of the bubble initiator installed in the battery's acid filling tank from another perspective.

[0020] Figure 4 for Figure 3 Enlarged view of part B in the middle.

[0021] Figure 5 This is a schematic diagram of the structure of a bubble-initiating tablet.

[0022] Figure 6 This is a schematic diagram of the structure of a bubble tablet from another perspective.

[0023] Reference numerals: 1. Pot body, 11. Acid spout, 12. Fixing groove, 2. Pot lid, 3. Acid spout rubber sleeve, 4. Bubble-inducing plate, 41. Bubble-inducing plate body, 42. Bubble-inducing strip, 43. Blade structure, 44. Serration, 45. Tip, 46. Fixing protrusion. Detailed Implementation

[0024] like Figures 1-4As shown, a battery acid filling container includes a container body 1 and a container cover 2. The bottom surface of the container body 1 has an acid spout 11 for dispensing acid, and the acid spout 11 has an acid spout rubber sleeve 3 for connecting to the acid filling hole of the battery. The acid spout 11 has an acid filling hole in the middle. The acid spout 11 extends into the acid spout rubber sleeve 3, and in use, the lower part of the acid spout rubber sleeve 3 is connected to the acid filling hole post of the battery, and the acid filling hole in the middle of the acid filling hole post communicates with the acid filling hole in the middle of the acid spout 11.

[0025] This application also includes a battery acid filler 4 for use with the battery acid filler.

[0026] like Figure 5 and Figure 6 As shown, the bubble-inducing sheet 4 includes a long, flat bubble-inducing sheet body 41, and at least one of the two sides of the bubble-inducing sheet body 41 in the thickness direction is provided with a protruding bubble-inducing strip 42. In the structure shown in the figure, both sides of the bubble-inducing sheet body 41 in the thickness direction are provided with protruding bubble-inducing strips 42 to improve the effect of puncturing bubbles.

[0027] The bubble-initiating strip 42 extends upward from the bottom of the bubble-initiating plate body 41. In the structure shown in the figure, the bubble-initiating strip 42 extends upward from the bottom of the bubble-initiating plate body 41 to slightly above the acid spout 11 after installation.

[0028] The bottom of the bubble-initiating strip 4 has a blade structure 43 that gradually thickens upwards from the bottom of the bubble-initiating plate 4. Above the blade structure 43, the bubble-initiating strip 4 also has a serrated structure for puncturing bubbles. The serrated structure corresponds to the inner wall of the acid spout 11. The blade structure 43 can guide and puncture bubbles, and in conjunction with the serrated structure, it can puncture bubbles more effectively.

[0029] The serrated structure includes several serrations 44, forming notches on the bubble-inducing strip 4, with a serration 44 formed between adjacent notches. Preferably, the serrated structure on each side of the bubble-inducing strip 4 includes 1 to 8 serrations 44. The serrations 44 are arranged obliquely downwards, with the angle between the serrations and the vertical direction being 30° to 80°, thereby more effectively piercing the bubbles rising from the bottom of the net.

[0030] The bottom width of the bubble-inducing sheet body 41 gradually increases from the bottom surface upwards to form a pointed tip 45, which is more conducive to guiding and puncturing the bubble.

[0031] like Figure 1 and Figure 2As shown, the bottom surface of the acid spout 11 has a fixing groove 12. The fixing groove 12 is formed by thinning the side wall of the acid spout 11 at the corresponding position, and the fixing groove 12 extends downward to the end face, thereby facilitating the installation of the bubble-drawing plate 4. The bubble-drawing plate body 41 has fixing protrusions 46 on both sides that extend into the fixing groove 12. There is one fixing protrusion 46 on each side of the bubble-drawing plate body 41, and correspondingly, there are two fixing grooves 12 on the acid spout 11. The inner diameter of the part of the acid spout rubber sleeve 3 connected to the acid spout 11 is larger, while the inner diameter of the part of the acid spout rubber sleeve 3 connected to the acid injection hole post of the middle cover is smaller. This results in a stepped structure on the inner side wall of the acid spout rubber sleeve 3. This stepped structure can block the opening of the fixing groove 12 on the end face of the acid spout 11, thereby limiting the fixing protrusions 46 on the bubble-drawing plate 4.

[0032] The present invention, the bubble initiator 4, has a serrated structure on the bubble initiator strip 42 for puncturing bubbles. The serrated structure can eliminate the air resistance at the acid injection port, realize the active puncturing of bubbles and the directional flow of acid, and ensure that the acid is evenly distributed to each cell during battery formation, thereby improving the consistency of acid quantity and concentration.

Claims

1. A bubble-initiating plate for a battery acid filling tank, the battery acid filling tank comprising a tank body and a tank cover, the bottom surface of the tank body having an acid spout for dispensing acid, and the acid spout having an acid spout rubber sleeve for connecting to the acid filling hole of the battery, characterized in that, The bubble-inducing sheet includes a long, flat bubble-inducing sheet body. At least one of the two sides of the bubble-inducing sheet body in the thickness direction is provided with a protruding bubble-inducing strip. The bottom of the bubble-inducing strip has a blade structure that gradually thickens from the bottom of the bubble-inducing sheet upwards. Above the blade structure, the bubble-inducing strip is also provided with a serrated structure for puncturing bubbles.

2. The bubble-initiating sheet for the battery acid filling tank according to claim 1, characterized in that, The serrated structure includes several serrations, forming notches on the bubble strip and a serration between adjacent notches.

3. The bubble-initiating sheet for the battery acid filling tank according to claim 2, characterized in that, The serrated structure on each side of the bubble strip includes 1 to 8 serrations.

4. The bubble-initiating sheet for the battery acid filling tank according to claim 2, characterized in that, The serrations are angled downwards.

5. The bubble-initiating sheet for the battery acid filling tank according to claim 4, characterized in that, The angle between the saw teeth and the vertical direction is 30° to 80°.

6. The bubble-initiating sheet for the battery acid filling tank according to claim 1, characterized in that, The bottom width of the bubble-inducing sheet gradually increases from the bottom surface upwards to form a pointed tip.

7. The bubble-initiating sheet for the battery acid filling tank according to claim 1, characterized in that, The bottom surface of the acid spout has a fixing groove, and the two sides of the bubble-inducing plate body are provided with fixing protrusions that extend into the fixing groove.

8. A battery acid filling container, comprising a container body and a container lid, wherein the bottom surface of the container body has an acid spout for dispensing acid, and the acid spout has an acid spout rubber sleeve for connecting to the acid filling hole of the battery, characterized in that, The battery electrolyte filling acid reservoir also includes a bubble initiator for the battery electrolyte filling acid reservoir according to any one of claims 1 to 7, wherein the serrated structure corresponds to the inner sidewall of the acid reservoir spout.

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