Acid adding pipe for acid circulation during formation of lead storage battery

Abstract

The utility model discloses an acid adding pipe for acid circulation during formation of a lead storage battery, which comprises an acid adding pipe body, an acid adding channel and an acid extracting channel are arranged in the acid adding pipe body, a baffle ring is arranged on the peripheral surface of the acid adding pipe body, a sealing groove is arranged below the baffle ring, and a sealing ring is arranged in the sealing groove. During use, the baffle ring is propped against the top surface of the acid adding hole column, and the sealing ring is in sealing fit with the side wall of the acid adding hole, so that sufficient sealing can be kept in the circulating process of acid liquor, and the acid liquor is prevented from overflowing from the acid adding hole. According to the acid adding pipe disclosed by the utility model, the acid adding channel and the acid pumping channel are arranged, so that the acid liquid circulation can be carried out in the formation process of the lead storage battery, the flow entering each battery is uniform, and the liquid level consistency of each battery unit cell and the liquid level consistency between the batteries are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of lead-acid battery production, and in particular relates to an acid-adding tube used for acid circulation during formation of a lead-acid battery. Background Art

[0002] The start-stop battery internal formation technology refers to the process of directly assembling the start-stop battery plates into batteries after cutting them into pieces after drying and curing, and then adding acid to the start-stop battery and charging it in a water bath to obtain a finished battery.

[0003] During the acid addition process, the acid addition process is unstable and the acid flow is uneven. When the acid addition speed is too fast, the electrolyte is easy to overflow, which will lead to inconsistent initial acid addition liquid levels inside the battery cells. After charging, due to the uneven temperature of the water bath, the liquid level between battery cells or between batteries will also be inconsistent.

[0004] During the formation process, if circulating acid is used to circulate between each battery and each cell of the battery, internal problems of the battery can be controlled by using cooled acid, and the acid level between each battery and each cell in the battery can be made consistent after formation.

[0005] Acid circulation requires the use of a specific acid adding device. For example, the utility model with the publication number CN212907983U discloses an intelligent battery acid extraction and acid adding detection integrated device, including a fixed seat; an acid inlet and an acid outlet, which are arranged on the upper part of the fixed seat; an acid adding and acid extraction rod, the upper end of which is sleeved on the lower part of the fixed seat; an acid adding tube and an acid extraction tube, which are symmetrically arranged inside the acid adding and acid extraction rod, the acid adding tube is connected to the acid inlet through a pipe 1 in the fixed seat, and the acid extraction tube is connected to the acid outlet through a pipe 2 in the fixed seat; and a liquid level sensor is arranged at the central end of the acid adding and acid extraction rod. In this prior art, the acid adding and acid extraction rod is not well sealed with the acid injection hole on the battery cover when in use, and acid overflow is likely to occur. Utility Model Content

[0006] The utility model aims at the above-mentioned deficiencies in the prior art and provides an acid adding tube for acid circulation during formation of a lead storage battery.

[0007] An acid adding tube for acid circulation during formation of a lead-acid battery, wherein the middle cover of the lead-acid battery is provided with an acid adding hole column, the middle of the acid adding hole column is provided with an acid adding hole, the acid adding tube comprises an acid adding tube body, the acid adding tube body is provided with an acid adding channel and an acid extraction channel, a retaining ring is provided on the outer peripheral surface of the acid adding tube body, a sealing groove is provided below the retaining ring, a sealing ring is provided in the sealing groove,

[0008] When in use, the retaining ring abuts against the top surface of the acid addition hole column, and the sealing ring is in sealing cooperation with the side wall of the acid addition hole.

[0009] Preferably, the sealing groove comprises two sealing grooves arranged one above the other, and a sealing ring is provided in each sealing groove.

[0010] Preferably, an acid addition connecting pipe and an acid extraction connecting pipe are provided on the top of the acid addition pipe body, the acid addition connecting pipe is connected to the acid addition channel, and the acid extraction connecting pipe is connected to the acid extraction channel.

[0011] More preferably, the acid addition connecting pipe is arranged perpendicular to the acid addition pipe body, and each of the two ends of the acid addition connecting pipe has an acid addition interface;

[0012] The acid extraction connecting pipe is arranged perpendicular to the acid addition pipe body, and each of the two ends of the acid extraction connecting pipe has an acid extraction interface.

[0013] Preferably, the bottom side of the acid adding tube body has an acid adding through hole connected to the acid adding channel;

[0014] The bottom side of the acid adding tube body also has an acid extraction through hole connected to the acid extraction channel.

[0015] The acid adding through hole and the acid extracting through hole are located on two opposite sides.

[0016] More preferably, the bottom side of the acid adding tube body has a first inclined surface, and the acid adding through hole includes a plurality of holes arranged on the first inclined surface;

[0017] The bottom side surface of the acid adding tube body has a second inclined surface on the side facing away from the first inclined surface, and the acid extraction through hole includes one hole arranged on the second inclined surface.

[0018] Further preferably, the outer peripheral protrusion of the acid extraction through hole at the second inclined surface is provided with a protective rib for protecting the acid extraction through hole.

[0019] Preferably, the acid adding pipe body is divided into two sections, the upper and lower sections are plug-connected and interference fit together, wherein the retaining ring and the sealing groove are located in the upper section.

[0020] More preferably, the outer periphery of the plug-in mating portion of the upper section and the lower section is provided with a positioning notch on the upper section and a positioning protrusion on the lower section, and the positioning protrusion extends into the positioning notch to achieve positioning.

[0021] The utility model discloses an acid adding pipe for acid circulation during the formation of a lead-acid battery. By arranging an acid adding channel and an acid extraction channel, acid can be circulated during the formation of the lead-acid battery, so that the flow rate entering each battery is uniform, and the consistency of the liquid level of each cell of the battery and the consistency of the liquid level between the batteries are ensured.

[0022] The utility model discloses an acid adding tube for acid circulation during formation of a lead-acid battery. The outer peripheral surface of the acid adding tube body is provided with a retaining ring, a sealing groove is provided below the retaining ring, and a sealing ring is provided in the sealing groove. When in use, the retaining ring abuts against the top surface of the acid adding hole column, and the sealing ring is in sealing cooperation with the side wall of the acid adding hole, thereby ensuring sufficient sealing during the acid liquid circulation process and preventing the acid liquid from overflowing from the acid adding hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the acid adding tube of the utility model.

[0024] Figure 2 This is a three-dimensional structural schematic diagram of the acid adding tube of the utility model from another perspective.

[0025] Figure 3 It is a side structural schematic diagram of the acid adding tube of the utility model.

[0026] Figure 4 for Figure 3 Cross-sectional view along AA direction.

[0027] Figure numerals: acid adding tube body 1, acid adding channel 2, acid extraction channel 3, retaining ring 4, sealing groove 5, sealing ring 6, acid adding connecting tube 7, acid extraction connecting tube 8, first inclined surface 9, acid adding through hole 10, second inclined surface 11, acid extraction through hole 12, protective rib 13, positioning notch 14, positioning protrusion 15. DETAILED DESCRIPTION

[0028] like Figures 1 to 4 As shown, an acid adding tube for acid circulation during formation of a lead-acid battery, the middle cover of the lead-acid battery has an acid adding hole column, the middle of the acid adding hole column has an acid adding hole, the acid adding tube comprises an acid adding tube body 1, the acid adding tube body 1 has an acid adding channel 2 and an acid extraction channel 3, the acid adding channel 2 and the acid extraction channel 3 are respectively located on two vertical sides of the acid adding tube body 1.

[0029] A retaining ring 4 is provided on the outer peripheral surface of the acid adding tube body 1, a sealing groove 5 is provided below the retaining ring 4, and a sealing ring 6 is provided in the sealing groove 5. When in use, the retaining ring 4 abuts against the top surface of the acid adding hole column on the cover of the lead-acid battery, and the sealing ring 6 is sealed with the side wall of the acid adding hole.

[0030] In order to achieve a better sealing effect, the sealing groove 5 includes two sealing grooves 5 arranged one above the other, and a sealing ring 6 is provided in each sealing groove 5 .

[0031] An acid adding connecting pipe 7 and an acid extraction connecting pipe 8 are provided at the top of the acid adding pipe body 1. The acid adding connecting pipe 7 is connected to the acid adding channel 2, and the acid extraction connecting pipe 8 is connected to the acid extraction channel 3. The acid adding connecting pipe 7 is arranged vertically to the acid adding pipe body 1, and each of the two ends of the acid adding connecting pipe 7 has an acid adding interface. The acid extraction connecting pipe 8 is arranged vertically to the acid adding pipe body 1, and each of the two ends of the acid extraction connecting pipe 8 has an acid extraction interface.

[0032] When in use, each acid adding tube corresponds to a single cell in a lead-acid battery. Generally, if the lead-acid battery has 6 single cells, 6 acid adding tubes are needed. The acid adding interface is connected to the acid adding interface through pipelines between adjacent acid adding tubes, and the acid extraction interface is connected to the acid extraction interface, so that the acid adding channel 2 in each acid adding tube is connected, and the acid extraction channel 3 in each acid adding tube is connected, so as to realize unified acid adding and acid extraction operations. Similarly, for different lead-acid batteries, the acid adding interface is connected to the acid adding interface through pipelines, and the acid extraction interface is connected to the acid extraction interface, so as to realize unified acid adding and acid extraction operations.

[0033] The bottom side of the acid adding tube body 1 has an acid adding through hole 10 connected to the acid adding channel 2. The bottom side of the acid adding tube body 1 also has an acid extraction through hole 12 connected to the acid extraction channel 3. The acid adding through hole 10 and the acid extraction through hole 12 are located on opposite sides, thereby minimizing the mutual influence between acid adding and acid extraction.

[0034] The bottom side of the acid adding tube body 1 has a first inclined surface 9, and the acid adding through hole 10 includes a plurality of holes arranged on the first inclined surface 9. The bottom side of the acid adding tube body 1 has a second inclined surface 11 on the side away from the first inclined surface 9, and the acid extraction through hole 12 includes one hole arranged on the second inclined surface 11. The acid adding through hole 10 and the acid extraction through hole 12 are respectively arranged on the inclined surface, which is less likely to impact the pole group than the bottom surface of the acid adding tube body 1.

[0035] The outer peripheral protrusion of the second inclined surface 11 located at the acid extraction through hole 12 is provided with a protective rib 13 for protecting the acid extraction through hole 12. The provision of the protective rib 13 can prevent the acid extraction through hole 12 from being blocked by the falling objects on the pole plate or separator that may be generated in the lead-acid battery.

[0036] In the acid adding tube of the utility model, the acid adding tube body 1 can be an integrated type or a split type. In the structure shown in the figure, the acid adding tube body 1 is a split type, divided into two sections, wherein the retaining ring 4, the sealing groove 5, the acid adding connecting tube 7, and the acid extraction connecting tube 8 are located in the upper section, and the first inclined surface 9 and the second inclined surface 11 are located in the lower section. The two sections are plugged in and matched, and the plugged in part is connected and fixed by interference fit, and the matching can also be made more firm by designing other snap-fit ​​structures. Since the upper section and the lower section each have a part of the acid adding channel 2 and the acid extraction channel 3 inside, the matching angle between the upper section and the lower section needs to be determined so that the complete acid adding channel 2 and the acid extraction channel 3 can be obtained. Therefore, on the periphery of the plug-fitting part of the upper section and the lower section, a positioning notch 14 is provided on the upper section, and a positioning protrusion 15 is provided on the lower section, and the positioning protrusion 15 extends into the positioning notch 14, so that accurate positioning can be achieved. Through the design of the segmented structure, the length of the lower section of the acid adding pipe with a suitable height can be selected according to the height difference between the top surface of the pole group in the lead-acid battery and the bottom surface of the middle cover.

[0037] When the acid adding tube of the utility model is in use, the retaining ring 4 abuts against the top surface of the acid adding hole column, and the sealing ring 6 cooperates with the side wall of the acid adding hole to ensure sufficient sealing during the acid liquid circulation process, and prevent the acid liquid from overflowing from the acid adding hole. Then the acid adding tubes installed on different cells of the same lead-acid battery and the acid adding tubes between different lead-acid batteries are connected through pipelines, so that the acid adding connecting tubes 7 are connected to each other and the acid extraction connecting tubes 8 are connected to each other. During the formation process of the lead-acid battery, the acid liquid is circulated to make the flow entering each battery uniform, and to ensure that the liquid level of each battery cell is consistent and the liquid level between batteries is consistent.

Claims

1. An acid adding tube for acid circulation during formation of a lead-acid battery, wherein the middle cover of the lead-acid battery has an acid adding hole column, and the middle of the acid adding hole column has an acid adding hole, characterized in that: The acid adding tube comprises an acid adding tube body, the acid adding tube body has an acid adding channel and an acid extraction channel, a retaining ring is provided on the outer peripheral surface of the acid adding tube body, a sealing groove is provided below the retaining ring, and a sealing ring is provided in the sealing groove. When in use, the retaining ring abuts against the top surface of the acid addition hole column, and the sealing ring is in sealing cooperation with the side wall of the acid addition hole.

2. The acid adding tube for acid circulation during formation of lead-acid battery according to claim 1, characterized in that: The sealing grooves include two sealing grooves arranged one above the other, and each sealing groove is equipped with a sealing ring.

3. The acid adding tube for acid circulation during the formation of lead-acid battery according to claim 1, characterized in that: An acid adding connecting pipe and an acid extraction connecting pipe are arranged on the top of the acid adding pipe body. The acid adding connecting pipe is connected to the acid adding channel, and the acid extraction connecting pipe is connected to the acid extraction channel.

4. The acid adding tube for acid circulation during formation of lead-acid battery according to claim 3, characterized in that: The acid adding connecting pipe is arranged perpendicular to the acid adding pipe body, and each of the two ends of the acid adding connecting pipe has an acid adding interface; The acid extraction connecting pipe is arranged perpendicular to the acid addition pipe body, and each of the two ends of the acid extraction connecting pipe has an acid extraction interface.

5. The acid adding tube for acid circulation during the formation of lead-acid battery according to claim 1, characterized in that: The bottom side of the acid adding tube body is provided with an acid adding through hole connected to the acid adding channel; The bottom side of the acid adding tube body also has an acid extraction through hole connected to the acid extraction channel. The acid adding through hole and the acid extracting through hole are located on two opposite sides.

6. The acid adding tube for acid circulation during formation of lead-acid battery according to claim 5, characterized in that: The bottom side surface of the acid adding tube body has a first inclined surface, and the acid adding through hole includes a plurality of holes arranged on the first inclined surface; The bottom side surface of the acid adding tube body has a second inclined surface on the side facing away from the first inclined surface, and the acid extraction through hole includes one hole arranged on the second inclined surface.

7. The acid adding tube for acid circulation during formation of lead-acid battery according to claim 6, characterized in that: The outer peripheral protrusion of the acid extraction through hole at the second inclined surface is provided with a protection rib for protecting the acid extraction through hole.

8. The acid adding tube for acid circulation during formation of lead-acid battery according to claim 1, characterized in that: The acid adding pipe body is divided into two sections, an upper section and an lower section, which are plugged in and interference fit with each other, wherein the retaining ring and the sealing groove are located in the upper section.

9. The acid adding tube for acid circulation during formation of lead-acid battery according to claim 8, characterized in that: The outer periphery of the upper section and the lower section plug-in matching part is provided with a positioning notch on the upper section and a positioning protrusion on the lower section, and the positioning protrusion extends into the positioning notch to realize positioning.

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