Acid circulation cooling structure for container formation of lead-acid storage battery

Abstract

The utility model provides an acid circulation cooling structure for container formation of a lead-acid storage battery, and relates to the technical field of container formation equipment of the lead-acid storage battery. The cooling structure comprises an acid storage tank, a circulating pipeline, a pump and a fan, the liquid inlet end and the liquid outlet end of the circulating pipeline are respectively communicated with the outlet and the inlet of the acid storage tank, and the pump and the fan are respectively communicated with the circulating pipeline. According to the utility model, the acid storage tank, the circulating pipeline, the pump and the fan are arranged, so that acid liquor in the acid storage tank can be pumped into the circulating pipeline through the pump, and heat exchange is carried out between the acid liquor in the circulating pipeline and air through the operation of the fan, so that the acid liquor can be effectively cooled; the cooled acid liquid finally flows back to the acid storage tank through the liquid outlet end of the circulating pipeline and the inlet of the acid storage tank; on the basis, the problems that an existing liquid cooling heat exchange mode for cooling the acid liquor in the internal formation process of the lead-acid storage battery is not ideal in cooling effect and needs high cost are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lead-acid battery internal formation equipment, in particular to an acid circulation cooling structure for lead-acid battery internal formation. Background Art

[0002] In the field of batteries at home and abroad, lead-acid batteries occupy a very large share due to their high cost-effectiveness and absolute advantages of recyclability; based on this, it is very meaningful to develop and improve the production technology of lead-acid batteries. The formation charging process is a key process to complete the production process of lead-acid batteries. Among them, the internal formation method has the advantages of small amount of waste acid and good environmental protection compared with the external formation method. It has been widely used in both domestic and foreign markets. When the lead-acid battery is internally charged, the acid temperature will be related to the production effect and safety, the quality and cost-effectiveness of the battery, so it is very important to control the acid temperature through effective cooling means.

[0003] In the prior art, liquid cooling and heat exchange are usually used to cool the acid solution; for example, the patent with the announcement number CN218333929U provides a lead-acid battery internal cold acid circulation system, which drives the fan blade to rotate by driving the motor, that is, the fan blade stirs the coolant inside the cooling tube during the rotation process, so that the coolant can effectively contact the first U-shaped tube, thereby taking away the heat of the acid solution inside the first U-shaped tube; for another example, the patent with the publication number CN116706263A provides a lead-acid battery internal cold acid circulation structure including a tank body and a cooling device for injecting coolant into the tank body, the tank body is vertically arranged, and a heat exchange coil is arranged in the tank body. When the acid solution flows through the heat exchange coil, it can exchange heat with the coolant in the tank body.

[0004] However, this method has limitations in practical applications. Specifically, during heat exchange, the coolant does not act directly on the acid, but needs to be indirectly exchanged through the container, so there may be problems such as unsatisfactory cooling effect and uneven cooling. In addition, this method requires strict leakage-free contact between the coolant and the acid, so the sealing requirements of the entire device are very high, which will lead to higher construction and maintenance costs, and there is also a risk of cross-contamination. In addition, in addition to basic pumps, valves, pipelines and other structures, liquid-cooled heat exchange devices usually also require coolant, coolant containers, acid containers, coolant stirring parts and other structures, which will make the device cost higher and the use and maintenance more complicated.

[0005] In summary, the utility model provides an internal acid circulation cooling structure for a lead-acid battery. Utility Model Content

[0006] The utility model aims to provide an acid circulation cooling structure for the internal formation of a lead-acid battery, so as to solve the problems mentioned in the above background technology that the existing liquid cooling heat exchange method for cooling the acid liquid in the internal formation process of the lead-acid battery has an unsatisfactory cooling effect and requires a relatively high cost.

[0007] The utility model is realized by adopting the following technical solutions:

[0008] A lead-acid battery internal acid circulation cooling structure comprises an acid storage tank, a circulation pipeline, a pump and a fan. The liquid inlet and liquid outlet of the circulation pipeline are respectively connected to the outlet and inlet of the acid storage tank, and the pump and the fan are respectively connected to the circulation pipeline.

[0009] In the internal acid circulation cooling structure of the lead-acid battery, the acid liquid in the acid storage tank can be pumped out into the circulation pipeline by a pump, and the acid liquid in the circulation pipeline is heat exchanged with the air by the operation of the fan, thereby effectively cooling the acid liquid. The cooled acid liquid will eventually flow back to the acid storage tank through the liquid outlet end of the circulation pipeline and the inlet of the acid storage tank.

[0010] Furthermore, the circulation pipeline includes an infusion section and a liquid return section, the liquid return section is in the form of a vertical pipe, the infusion section is connected to the outlet of the acid storage tank through the liquid inlet end, the liquid return section is connected to the inlet of the acid storage tank through the liquid outlet end, and the pump is connected to the infusion section.

[0011] In this cooling structure, the infusion section can be set to a multi-section bending type according to actual conditions, but the return liquid section is preferably set to a vertical pipe form to facilitate the rapid return of the cooled acid liquid to the acid storage tank.

[0012] Furthermore, a plurality of acid inlet nozzles are provided at the connection position between the liquid infusion section and the liquid return section, and the nozzles of the plurality of acid inlet nozzles are directly or indirectly directed toward the liquid return section.

[0013] In the cooling structure, by arranging the acid inlet nozzle, accurate and efficient delivery of the acid solution can be achieved.

[0014] Furthermore, when the nozzles of the several acid inlet nozzles are indirectly facing the liquid return section, an acid spraying device is also provided at the connection position of the infusion section and the liquid return section, and the acid spraying device includes a cylindrical main body with a hollow interior, and a plurality of acid inlet holes are opened on the outer wall of the cylindrical main body, and the plurality of acid inlet holes are respectively connected to the nozzles of the several acid inlet nozzles, and a plurality of through holes are opened on the lower surface of the cylindrical main body, and the through holes face the liquid return section.

[0015] In the cooling structure, by providing an acid spraying device, the acid liquid can be dispersed and made to fall in multiple thin streams, thereby achieving the effect of evenly conveying the acid liquid.

[0016] Furthermore, a plurality of multi-faceted hollow balls are provided in the liquid return section.

[0017] In this cooling structure, after the acid liquid falls through the acid spraying device, it will be evenly sprinkled on a number of multi-faceted hollow balls, thereby effectively increasing the contact area between the acid liquid and the air, thereby improving the cooling effect; and it can also avoid the problem of the acid liquid flowing down close to the inner wall of the circulation pipeline.

[0018] Furthermore, a pressure sensor is provided in the circulation pipeline, and the pressure sensor is communicatively connected with an external control and alarm device.

[0019] In this cooling structure, by setting a pressure sensor, it is possible to prevent the pump from being damaged due to idling and dry grinding. Specifically: the pressure sensor can detect the pressure value in the circulation pipeline in real time; when there is acid or insufficient air in the circulation pipeline, the pump will have the problem of empty suction. At this time, the pressure sensor will detect that the pressure value in the circulation pipeline has decreased. After the external control and alarm equipment receives the signal, it can promptly issue an alarm. The operator can also remotely control the pump to stop working or set the pump to stop working automatically through the control and alarm equipment.

[0020] Furthermore, the pump is a magnetic pump.

[0021] In this cooling structure, a magnetic pump is used, which has the advantages of no leakage, high efficiency and long service life.

[0022] Furthermore, the acid storage tank comprises a sub-tank I and a sub-tank II which are spaced apart from each other, wherein the sub-tank I is connected to the liquid inlet of the circulation pipeline through an outlet, and the sub-tank II is connected to the liquid outlet of the circulation pipeline through an inlet.

[0023] In this cooling structure, by separating sub-slot I and sub-slot II, the acid liquid before and after cooling can be physically isolated to a certain extent, thereby avoiding the mutual influence between acid liquids of different temperatures, so as to further improve the cooling efficiency and effect.

[0024] The beneficial effects achieved by the utility model are:

[0025] Provided is a lead-acid battery internal formation acid circulation cooling structure. By setting an acid storage tank, a circulation pipeline, a pump and a fan, the acid liquid in the acid storage tank can be pumped out into the circulation pipeline by the pump, and the acid liquid in the circulation pipeline is heat exchanged with the air by the operation of the fan, so that the acid liquid can be effectively cooled. The cooled acid liquid will eventually flow back to the acid storage tank through the liquid outlet end of the circulation pipeline and the inlet of the acid storage tank. Compared with the existing technology using liquid cooling heat exchange, the air and acid liquid in the utility model are in direct contact to achieve heat exchange, so the cooling effect is more ideal; and there is no need to limit the non-leakage contact between the air and the acid liquid, and there is no risk of cross contamination; in addition, in addition to the basic pump, valve and pipeline structures, only a fan needs to be set, so the cost is low and the use and maintenance are simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall composition of the cooling structure described in the embodiment of the utility model;

[0027] Figure 2 It is a structural schematic diagram of a circulation pipeline in the cooling structure described in an embodiment of the utility model;

[0028] Figure 3 It is a schematic diagram of the connection relationship between the acid spraying device and the acid inlet nozzle in the cooling structure of the embodiment of the utility model;

[0029] Figure 4 It is a three-dimensional schematic diagram of an acid spraying device in a cooling structure according to an embodiment of the utility model;

[0030] Figure 5 It is a bottom view schematic diagram of the acid spraying device in the cooling structure of the embodiment of the utility model;

[0031] Figure 6 It is a schematic diagram of the internal structure of the acid storage tank in the cooling structure of the embodiment of the utility model;

[0032] Figure 7 It is a schematic diagram of the connection relationship between the acid storage tank and the circulation pipeline in the cooling structure of the embodiment of the utility model;

[0033] In the figure: 1. pump outlet; 2. pump; 3. pump inlet; 4. pressure sensor; 5. pneumatic ball valve; 6. acid storage tank; 7. multi-faceted hollow ball; 8. liquid return section; 9. acid spray device; 10. fan; 11. acid inlet nozzle; 12. infusion section; 13. liquid inlet end; 14. liquid outlet end; 15. outlet; 16. inlet; 17. sub-slot I; 18. sub-slot II; 91. cylindrical body; 92. through hole; 93. acid inlet hole. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0035] Example 1

[0036] Please refer to Figures 1 to 7 This embodiment provides an acid circulation cooling structure for internal formation of a lead-acid battery, comprising an acid storage tank 6, a circulation pipeline, a pump 2 and a fan 10, wherein a liquid inlet 13 and a liquid outlet 14 of the circulation pipeline are respectively connected to an outlet 15 and an inlet 16 of the acid storage tank 6, and the pump 2 and the fan 10 are respectively connected to the circulation pipeline, wherein the fan 10 is arranged behind the pump 2. Specifically:

[0037] The circulation pipeline includes an infusion section 12 and a liquid return section 8. In this embodiment, the infusion section 12 is in a bent form, and the liquid return section 8 is in a vertical pipe form; the infusion section 12 is connected to the outlet 15 of the acid storage tank 6 through the liquid inlet end 13, and the pump 2 is connected to the infusion section 12, wherein a pneumatic ball valve 5 is provided between the pump inlet 3 and the liquid inlet end 13 and behind the pump outlet 1; the liquid return section 8 is connected to the inlet 16 of the acid storage tank 6 through the liquid outlet end 14.

[0038] An interface connected to the fan 10 is provided at the connection position of the infusion section 12 and the liquid return section 8, and four acid inlet nozzles 11 and an acid spray device 9 are provided; the acid spray device 9 includes a cylindrical body 91 with a hollow interior, four acid inlet holes 93 are provided on the outer wall of the cylindrical body 91, and the four acid inlet holes 93 are respectively connected to the nozzles of the four acid inlet nozzles 11, and a plurality of through holes 92 facing the liquid return section 8 are provided on the lower surface of the cylindrical body 91; a plurality of polyhedral hollow balls 7 are provided in the liquid return section 8, and the plurality of polyhedral hollow balls 7 are supported by a filter net located below.

[0039] In this embodiment, the pump 2 is a magnetic pump, and a pressure sensor 4 is provided in the circulation pipeline, and the pressure sensor 4 is communicatively connected with the external control and alarm equipment; the interior of the acid storage tank 6 includes a sub-trough Ⅰ17 and a sub-trough Ⅱ18 spaced apart from each other, and the sub-trough Ⅰ17 is connected to the liquid inlet end 13 of the circulation pipeline through the outlet 15, and the sub-trough Ⅱ18 is connected to the liquid outlet end 14 of the circulation pipeline through the inlet 16; in addition, all structures in contact with the acid liquid are made of acid corrosion-resistant materials.

[0040] Based on the above structure, the working principle of this embodiment is as follows:

[0041] When acid circulation cooling is performed, the acid liquid in the sub-tank Ⅰ17 of the acid storage tank 6 is first pumped out into the circulation pipeline through the pump 2; then, during the acid liquid transportation process, the acid liquid in the circulation pipeline is heat exchanged with the air through the operation of the fan 10 to cool the acid liquid; when the acid liquid is transported to the connection position of the infusion section 12 and the return liquid section 8, it will reach the acid spray device 9 through the acid inlet nozzle 11, and after being dispersed by the acid spray device 9, it will fall in multiple streams; the acid liquid after falling will be evenly sprinkled on a number of multi-faceted hollow balls 7, and finally flow back to the sub-tank Ⅱ18 of the acid storage tank 6 through the liquid outlet end 14 of the circulation pipeline and the inlet 16 of the acid storage tank 6.

[0042] Among them, the pressure sensor 4 can prevent the pump 2 from being damaged due to idling and dry grinding during the acid circulation cooling process. Specifically: the pressure sensor 4 can detect the pressure value in the circulation pipeline in real time; when there is acid or insufficient air in the circulation pipeline, the pump 2 will have the problem of empty suction. At this time, the pressure sensor 4 will detect that the pressure value in the circulation pipeline has decreased. After the external control and alarm equipment receives the signal, it can promptly issue an alarm. The operator can also remotely control the pump 2 to stop working or set the pump 2 to stop working automatically through the control and alarm equipment.

[0043] It should be noted that the parts not described in detail or expanded in the above scheme are all existing technologies, which do not belong to the improvements made by the present invention on the existing technologies, nor do they belong to the protection scope of the technical scheme of the present invention, so they will not be repeated in this article.

[0044] Of course, the above contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and any equivalent changes and improvements made by ordinary technicians in the technical field within the essential scope of the present invention shall fall within the scope of the patent coverage of the present invention.

Claims

1. A lead-acid battery internal formation acid circulation cooling structure, characterized in that: The invention comprises an acid storage tank (6), a circulation pipeline, a pump (2) and a fan (10), wherein the liquid inlet end (13) and the liquid outlet end (14) of the circulation pipeline are respectively connected to the outlet (15) and the inlet (16) of the acid storage tank (6), and the pump (2) and the fan (10) are respectively connected to the circulation pipeline, wherein the fan (10) is arranged behind the pump (2).

2. The lead-acid battery internal formation acid circulation cooling structure according to claim 1, characterized in that: The circulation pipeline comprises an infusion section (12) and a liquid return section (8); the liquid return section (8) is in the form of a vertical pipe; the infusion section (12) is connected to an outlet (15) of an acid storage tank (6) via a liquid inlet end (13); the liquid return section (8) is connected to an inlet (16) of the acid storage tank (6) via a liquid outlet end (14); and the pump (2) is connected to the infusion section (12).

3. The lead-acid battery internal formation acid circulation cooling structure according to claim 2, characterized in that: A plurality of acid inlet nozzles (11) are provided at the connection position between the liquid infusion section (12) and the liquid return section (8), and the nozzles of the plurality of acid inlet nozzles (11) are directly or indirectly directed toward the liquid return section (8).

4. The lead-acid battery internal formation acid circulation cooling structure according to claim 3, characterized in that: When the nozzles of the plurality of acid inlet nozzles (11) are indirectly directed toward the liquid return section (8), an acid spraying device (9) is further provided at the connection position between the liquid infusion section (12) and the liquid return section (8), wherein the acid spraying device (9) comprises a cylindrical main body (91) with a hollow interior, wherein a plurality of acid inlet holes (93) are provided on the outer wall of the cylindrical main body (91), wherein the plurality of acid inlet holes (93) are respectively connected to the nozzles of the plurality of acid inlet nozzles (11), and wherein a plurality of through holes (92) are provided on the lower surface of the cylindrical main body (91), wherein the through holes (92) are directed toward the liquid return section (8).

5. The lead-acid battery internal formation acid circulation cooling structure according to claim 2, 3 or 4, characterized in that: A plurality of multi-faceted hollow balls (7) are arranged in the liquid return section (8).

6. The acid circulation cooling structure for internal formation of lead-acid storage battery according to claim 1, characterized in that: A pressure sensor (4) is provided in the circulation pipeline, and the pressure sensor (4) is communicatively connected with an external control and alarm device.

7. The lead-acid battery internal formation acid circulation cooling structure according to claim 1, characterized in that: The pump (2) is a magnetic pump.

8. The lead-acid battery internal formation acid circulation cooling structure according to claim 1, characterized in that: The acid storage tank (6) comprises a sub-tank I (17) and a sub-tank II (18) which are spaced apart from each other. The sub-tank I (17) is connected to the liquid inlet (13) of the circulation pipeline via the outlet (15), and the sub-tank II (18) is connected to the liquid outlet (14) of the circulation pipeline via the inlet (16).

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