Acid pot connecting structure for negative pressure formation

Abstract

The utility model discloses an acid pot connecting structure for negative pressure formation, which comprises an acid pot, an inner cavity of the acid pot comprises a plurality of unit cells, the bottom surface of the acid pot is provided with an acid adding nozzle matched with an acid filling hole in the top surface of a lead storage battery, each unit cell is correspondingly provided with an acid adding nozzle, each unit cell is internally provided with an acid pumping straight pipe extending out of the acid adding nozzle, and the acid pumping straight pipe is provided with a plurality of acid pumping holes. The top surface of the acid pot is provided with an opening and is matched with an acid pot cover, the bottom surface of the acid pot cover is provided with a first acid discharging port, a first negative pressure pumping port and a first acid pumping port corresponding to each unit cell, and the top surface or the side surface of the acid pot cover is also provided with a second acid discharging port, a second negative pressure pumping port and a second acid pumping port; the acid pot cover is internally provided with an acid discharging channel enabling the first acid discharging ports to be communicated with the same second acid discharging port, a negative pressure pumping channel enabling the first negative pressure pumping ports to be communicated with the same second negative pressure pumping port, and an acid pumping channel enabling the first acid pumping ports to be communicated with the same second acid pumping port. According to the utility model, automatic acid filling of the battery and automatic acid extraction after battery charging can be realized by using vacuum negative pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, in particular to an acid pot connection structure for negative pressure formation. Background Art

[0002] Lead-acid battery is a storage battery whose electrodes are mainly made of lead and its oxides, and whose electrolyte is sulfuric acid solution. When the lead-acid battery is discharged, the lead dioxide at the positive electrode and the spongy lead at the negative electrode are converted into lead sulfate; when charged, the lead sulfate at the positive and negative electrodes are converted into lead dioxide and spongy lead respectively.

[0003] Formation is a key process in the production of lead-acid batteries. Through charging and discharging, the positive active material is converted into lead dioxide, and the negative active material is converted into spongy lead. There are two common formation methods, plate formation and battery formation. Plate formation, also known as tank formation and external formation, inserts the positive and negative raw plates alternately into the formation tank, and the plates of the same polarity are arranged on the same side to form a multi-pole positive and negative electrode group for charging and forming mature plates. The battery is assembled with the formed mature plates. Non-dry-charged batteries also need to go through the acid addition and charging process. Battery formation, also known as internal formation, also known as "cadmium-free internal formation process", is to directly assemble the battery after the solidified and dried battery plates are cut and then acid is added to the battery for charging to obtain the finished product. Since the internal formation process eliminates the discharge of acid wastewater generated by tank formation in the production process of lead-acid batteries, the internal formation process is more environmentally friendly than the external formation process, so the internal formation process is gradually promoted and used in lead-acid battery production plants.

[0004] Whether it is plate formation or battery formation, it needs to go through the acid addition and charging process. Acid addition is a process in which a sulfuric acid solution enters the battery from an acid adding machine through an acid adding pot. Valve-regulated lead-acid batteries usually use vacuum negative pressure technology for acid addition. In recent years, vacuum negative pressure technology has also been gradually adopted for battery formation processes. In order to make the internal formation effect better, it is best to use negative pressure formation technology during the internal formation process. Negative pressure formation technology refers to the battery being charged and formed in a closed environment using a large current, and using a vacuum pressure device to remove the heat and acid mist generated during the formation. During the internal formation process, it is best to use negative pressure to discharge the gas inside the lead-acid battery and add acid to the lead-acid battery at the same time. It is also best to be able to control the acid injection speed. At present, it can only be done manually by pumping negative pressure and using an acid adding machine to control acid addition. The workload is large and the production efficiency is low. It is difficult to achieve large-scale production and needs further improvement.

[0005] Therefore, it is currently necessary to further improve the structure of the acid kettle connected to the negative pressure formation. Utility Model Content

[0006] In order to overcome the deficiencies in the prior art, the utility model provides an acid pot connection structure for negative pressure formation.

[0007] The technical solution adopted by the utility model to achieve the above technical purpose is:

[0008] An acid pot connection structure for negative pressure formation comprises an acid pot, wherein the inner cavity of the acid pot comprises a plurality of cells, the bottom surface of the acid pot comprises an acid adding nozzle for cooperating with the acid injection hole on the top surface of a lead-acid battery, each cell is provided with an acid adding nozzle, each cell is provided with an acid extraction straight pipe extending from the acid adding nozzle, the top surface of the acid pot is provided with an opening and is provided with an acid pot cover, the bottom surface of the acid pot cover comprises a first acid lowering port, a first negative pressure extraction port and a first acid extraction port respectively corresponding to each cell, the top surface or the side surface of the acid pot cover is further provided with a second acid lowering port, a second negative pressure extraction port and a second acid extraction port, and the inside of the acid pot cover comprises:

[0009] Connect each first acid-reducing port to the acid-reducing channel of the same second acid-reducing port,

[0010] Connect each first negative pressure extraction port to the negative pressure extraction channel of the same second negative pressure extraction port,

[0011] Each first acid extraction port is connected to the acid extraction channel of the same second acid extraction port.

[0012] By setting up different channel pipelines, vacuum negative pressure is used to realize automatic acid filling of the battery. There is an acid extraction pipeline, which uses vacuum negative pressure to realize automatic acid extraction after the battery charging is completed.

[0013] The second acid lowering port, the second negative pressure extraction port and the second acid extraction port are all arranged in the middle of the top surface of the acid pot cover along the length direction, and are arranged at intervals along the width direction of the top surface, the second acid extraction port is located in the middle, and correspondingly, the first acid extraction port is also located in the middle of the bottom surface of the acid pot cover. The acid extraction port is arranged in the middle position so that it can be conveniently connected to the acid extraction straight pipe.

[0014] It also includes an acid lowering pipe, a negative pressure pipe and an acid extraction pipe which are respectively connected to the second acid lowering port, the second negative pressure extraction port and the second acid extraction port when in use.

[0015] The bottom of the acid lowering pipe, negative pressure pipe and acid extraction pipe corresponding to the same acid pot are integrated and fixed on a connecting block, and the bottom surface of the connecting block is provided with an acid lowering connection port, a negative pressure extraction connection port and an acid extraction connection port for connecting with the second acid lowering port, the second negative pressure extraction port and the second acid extraction port respectively. The connecting block is provided to facilitate manual installation on the acid pot, which is simple and convenient. The acid lowering connection port, the negative pressure extraction connection port and the acid extraction connection port can use a sealing ring to make the interface more rigorous.

[0016] The acid-feeding pipe, the negative pressure pipe and the acid-extraction pipe all have at least one section as a hose, and the acid-feeding connection port, the negative pressure extraction connection port and the acid-extraction connection port are plugged and matched with the second acid-feeding port, the second negative pressure extraction port and the second acid-extraction port respectively. The hose facilitates the movement of the position during installation.

[0017] The top surface of the acid pot cover is thickened in the area where the second acid lowering port, the second negative pressure extraction port and the second acid extraction port are located, so as to better withstand negative pressure.

[0018] The utility model designs an acid pot connection structure for negative pressure formation. An acid pot cover is arranged on the top surface of the acid pot body, and an acid discharge channel, a negative pressure extraction channel and an acid extraction channel are arranged inside the acid pot cover. The vacuum negative pressure can be used to realize automatic acid filling of the battery and automatic acid extraction after the battery charging is completed, and the internal formation production efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front cross-sectional view of the acid pot connection structure;

[0020] Figure 2 It is a top view of the acid pot connection structure;

[0021] Figure 3 for Figure 2 A cross-sectional view of AA;

[0022] Figure 4 It is a schematic diagram of the acid pot cover and the connecting block;

[0023] Figure 5 It is a bottom view of the acid pot cover and the connecting block structure;

[0024] Figure 6 It is a schematic diagram of the utility model when in use.

[0025] Markings in the figure: 1-acid pot, 2-acid adding nozzle, 3-acid extraction straight pipe, 4-acid pot cover, 5-negative pressure extraction channel, 6-acid lower channel, 7-acid extraction channel, 8-negative pressure pipe, 9-acid extraction pipe, 10-acid lower pipe, 11-connecting block. DETAILED DESCRIPTION

[0026] like Figures 1 to 6 As shown, the acid pot connection structure for negative pressure formation of the utility model comprises an acid pot 1, the inner cavity of the acid pot 1 comprises a plurality of cells, the bottom surface of the acid pot 1 comprises an acid adding nozzle 2 for cooperating with the acid injection hole on the top surface of the lead-acid battery, each cell is provided with an acid adding nozzle 2, and each cell is provided with an acid extraction straight pipe 3 extending from the acid adding nozzle 2 (the utility model Figure 1 6 single cells are drawn as an example), the top surface of the acid pot 1 is opened and is equipped with an acid pot cover 4, the bottom surface of the acid pot cover 4 corresponds to each single cell and has a first acid lowering port, a first negative pressure extraction port and a first acid extraction port, and the top surface or side surface of the acid pot cover is also provided with a second acid lowering port, a second negative pressure extraction port and a second acid extraction port, and the acid pot cover 4 has:

[0027] Connect each first acid-reducing port to the acid-reducing channel 6 of the same second acid-reducing port,

[0028] Connect each first negative pressure extraction port to the negative pressure extraction channel 5 of the same second negative pressure extraction port,

[0029] Each first acid extraction port is connected to the acid extraction channel 7 of the same second acid extraction port. Different channel pipes and openings can use vacuum negative pressure to realize automatic acid filling of the battery and automatic acid extraction after the battery charging is completed.

[0030] The second lower acid port, the second negative pressure port and the second acid extraction port are all arranged in the middle of the top surface of the acid pot cover 4 along the length direction, and are arranged at intervals along the width direction of the top surface. The second acid extraction port is located in the middle, and correspondingly, the first acid extraction port is also located in the middle of the bottom surface of the acid pot cover 4.

[0031] It also includes an acid lowering pipe 10, a negative pressure pipe 8 and an acid extraction pipe 9 which are respectively connected to the second acid lowering port, the second negative pressure extraction port and the second acid extraction port when in use.

[0032] The bottoms of the acid lowering pipe 10, the negative pressure pipe 8 and the acid extraction pipe 9 corresponding to the same acid pot are integrated and fixed on a connecting block 11, and the bottom surface of the connecting block 11 is provided with an acid lowering connection port, a negative pressure extraction connection port and an acid extraction connection port for connecting to the second acid lowering port, the second negative pressure extraction port and the second acid extraction port respectively.

[0033] The acid-down pipe 10, the negative pressure pipe 8 and the acid extraction pipe 9 all have at least one section as a hose, and the acid-down connection port, the negative pressure extraction connection port and the acid extraction connection port correspond to and are plugged into and matched with the second acid-down port, the second negative pressure extraction port and the second acid extraction port respectively.

[0034] The top surface of the acid pot cover 4 is thickened in the area where the second acid lowering port, the second negative pressure extraction port and the second acid extraction port are located.

[0035] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. An acid pot connection structure for negative pressure formation, comprising an acid pot, wherein the inner cavity of the acid pot comprises a plurality of cells, the bottom surface of the acid pot has an acid adding nozzle for cooperating with the acid injection hole on the top surface of the lead-acid battery, each cell is provided with an acid adding nozzle, each cell is provided with an acid extraction straight pipe extending from the acid adding nozzle, the top surface of the acid pot is provided with an opening and is provided with an acid pot cover, characterized in that: The bottom surface of the acid pot cover has a first acid lowering port, a first negative pressure extraction port and a first acid extraction port corresponding to each single cell, and the top surface or side surface of the acid pot cover is also provided with a second acid lowering port, a second negative pressure extraction port and a second acid extraction port, and the inside of the acid pot cover has: Connect each first acid-reducing port to the acid-reducing channel of the same second acid-reducing port, Connect each first negative pressure extraction port to a negative pressure extraction channel of the same second negative pressure extraction port, Each first acid extraction port is connected to the acid extraction channel of the same second acid extraction port.

2. The acid pot connection structure for negative pressure formation according to claim 1, characterized in that: The second acid lower port, the second negative pressure extraction port and the second acid extraction port are all arranged in the middle of the top surface of the acid pot cover along the length direction, and are arranged at intervals along the width direction of the top surface. The second acid extraction port is located in the middle, and correspondingly, the first acid extraction port is also located in the middle of the bottom surface of the acid pot cover.

3. The acid pot connection structure for negative pressure formation according to claim 2, characterized in that: It also includes an acid lowering pipe, a negative pressure pipe and an acid extraction pipe which are respectively connected to the second acid lowering port, the second negative pressure extraction port and the second acid extraction port when in use.

4. The acid pot connection structure for negative pressure formation according to claim 3, characterized in that: The bottoms of the acid lowering pipe, negative pressure pipe and acid extraction pipe corresponding to the same acid pot are integrated and fixed on a connecting block, and the bottom surface of the connecting block is provided with an acid lowering connection port, a negative pressure extraction connection port and an acid extraction connection port for connecting with the second acid lowering port, the second negative pressure extraction port and the second acid extraction port respectively.

5. The acid pot connection structure for negative pressure formation according to claim 4, characterized in that: The acid-down pipe, negative pressure pipe and acid extraction pipe all have at least one section that is a hose, and the acid-down connection port, negative pressure extraction connection port and acid extraction connection port correspond to and are plugged into and matched with the second acid-down port, the second negative pressure extraction port and the second acid extraction port respectively.

6. The acid pot connection structure for negative pressure formation according to claim 4, characterized in that: The top surface of the acid pot cover is thickened in the area where the second acid lowering port, the second negative pressure extraction port and the second acid extraction port are located.

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