Battery acid extraction device

Abstract

The utility model provides a battery acid extraction device which comprises a negative pressure machine connected with an acid storage tank through a first guide pipe; the acid storage tank is connected with a third guide pipe arranged at an outlet of the acid extraction assembly through a second guide pipe; the acid extraction assembly is provided with a plurality of acid extraction monomers connected through a fourth guide pipe; the acid extraction monomer is provided with a negative pressure cavity and an acid extraction pipe, one end of the acid extraction pipe is fixed in the negative pressure cavity, and the other end of the acid extraction pipe is inserted into the battery valve hole; according to the acid extraction device, the stable suction force in the acid extraction process can be ensured, the acid extraction speed is increased, acid extraction is thorough, no residual acid is left, and the product quality is not influenced by residual acid residues.

Description

Technical Field

[0001] This utility model relates to the field of battery acid extraction technology, and in particular to a battery acid extraction device. Background Technology

[0002] In the production of valve-regulated lead-acid batteries for electric bicycles, the amount of acid injected into semi-finished batteries often has a design margin. Therefore, after formation, free acid will still exist inside the battery. If this acid is not removed, the acid saturation of the separator will be too high, causing the gas channels in the separator to close and hindering oxygen recombination. This will reduce the battery's lifespan due to severe gas evolution. In addition, excessive acid will also exacerbate grid corrosion, thus prematurely ending the battery's lifespan. Commonly used acid extraction tools are often inconvenient to operate and may even result in incomplete acid extraction, failing to meet process requirements. Utility Model Content

[0003] This invention solves the problem of incomplete acid removal in existing technologies by proposing a battery acid removal device that ensures stable suction during the acid removal process, increases the acid removal speed, and ensures thorough acid removal without leaving any residual acid, thus guaranteeing that product quality is not affected by residual acid.

[0004] To achieve the above objectives, the following technical solution is proposed:

[0005] A battery acid extraction device, comprising:

[0006] The negative pressure unit is connected to the acid storage tank via the first conduit;

[0007] The acid storage tank is connected to a third conduit located at the outlet of the acid extraction component via a second conduit;

[0008] The acid extraction assembly is equipped with several acid extraction monomers connected via a fourth conduit;

[0009] The acid extraction unit is equipped with a negative pressure chamber and an acid extraction tube. One end of the acid extraction tube is fixed in the negative pressure chamber, and the other end of the acid extraction tube is inserted into the battery valve hole.

[0010] A battery acid extraction device includes a negative pressure unit, a first conduit, an acid storage tank, a second conduit, an acid extraction assembly, a third conduit, and a battery valve orifice. The acid extraction assembly is provided with a plurality of acid extraction units, and adjacent acid extraction units are connected by a fourth conduit. Each acid extraction unit includes a negative pressure chamber and an acid extraction tube. One end of the acid extraction tube is inserted and fixed in the negative pressure chamber, and the other end of the acid extraction tube is inserted into the battery valve orifice. The negative pressure unit is connected to the acid storage tank through the first conduit. The third conduit is located at the outlet of the acid extraction assembly, and the acid storage tank is connected to the third conduit through the second conduit.

[0011] Preferably, the acid extraction tube is fitted with an acid extraction interface on its outer side, and the bottom of the acid extraction interface is provided with an annular groove that is engaged with the battery valve hole.

[0012] The acid extraction unit of this invention has an acid extraction interface, which is sleeved on the outside of the acid extraction tube. The bottom of the acid extraction interface has an annular groove for engaging with the battery valve hole. The number of acid extraction units depends on the number of battery valve holes; in this embodiment, six units are used. The six acid extraction units are arranged in a straight line, with the upper part of the acid extraction tube higher than the bottom of the negative pressure chamber and the lower part extending beyond the bottom of the acid extraction interface. The acid extraction tube and the acid extraction interface are fixedly connected but can be detached from the negative pressure chamber. Therefore, when dealing with battery valve holes of different sizes, the corresponding acid extraction tube and interface can be replaced. The annular groove ensures airtightness by embedding the battery valve hole into the interface, while also acting as a limiting mechanism to prevent the acid extraction assembly from detaching.

[0013] The working process is as follows: Start the negative pressure machine and fasten the acid extraction assembly to the six valve holes on the battery cover. At this time, the bottom of the acid extraction tube enters the upper cavity inside the battery and connects with the top of the battery electrode group. The residual acid in the cavity is put into the negative pressure cavity through the acid extraction tube and deposits. The accumulated residual acid level rises continuously. When it is higher than the top of the acid extraction tube, the excess part will flow out through the conduit at the same height as the top of the acid extraction tube and finally enter the acid storage tank for storage.

[0014] Using this invention for acid extraction ensures that there is no pressure loss between the battery interior, working components, and acid storage tank due to its excellent airtightness. This guarantees stable suction during the extraction process, increases extraction speed, and ensures thorough extraction without leaving any residual acid, thus preventing product quality from being affected by residual acid. Furthermore, the device can be flexibly disassembled and assembled, adapting to various battery models with 1*6 and 2*3 structures, demonstrating excellent versatility.

[0015] Preferably, the inner wall of the acid extraction port fits into the outer wall of the acid extraction tube.

[0016] In this invention, the outer wall of the acid extraction tube fits into the inner wall of the acid extraction interface.

[0017] Preferably, one end of the acid extraction tube located in the negative pressure chamber is flush with the fourth conduit.

[0018] In this invention, the height of the end of the acid extraction tube located in the negative pressure cavity needs to be flush with the fourth conduit.

[0019] Preferably, a limiting block is connected between adjacent negative pressure cavities.

[0020] The acid extraction assembly of this invention has a limiting block connected between the negative pressure chambers of adjacent acid extraction units to reinforce the assembly structure.

[0021] Preferably, the second conduit is a flexible tube, while the first, third, and fourth conduits are all rigid tubes.

[0022] The second conduit of this invention is designed as a flexible tube for easy handling by the operator. The first, third, and fourth conduits are all designed as rigid tubes to improve structural connection strength. Both the conduits and the limiting block are detachable to accommodate the acid extraction requirements of different battery models.

[0023] Preferably, the negative pressure chamber is provided with an inverted cylinder, and the opening of the cylinder is fixed with a cavity interface. The cavity interface is an elastic body with an inverted conical cross section. Its inner diameter is smaller than the outer diameter of the acid extraction tube in the initial state. When it is fitted onto the acid extraction tube, its inner diameter is the same as the outer diameter of the acid extraction tube.

[0024] The negative pressure chamber of this invention includes an inverted cylinder and a cavity interface fixedly disposed at the opening of the cylinder. The cavity interface is an elastic body with an inverted conical cross-section. In the initial state, the inner diameter of the cavity interface is smaller than the outer diameter of the acid extraction tube. When the cavity interface is fitted onto the acid extraction tube, the inner diameter of the cavity interface is the same as the outer diameter of the acid extraction tube.

[0025] Preferably, the negative pressure chamber is provided with an inverted cylinder, the opening of which is fixed with a cavity interface. The bottom of the cavity interface is provided with an external threaded connector, the top of the acid extraction interface is provided with an acid extraction interface cavity, the inner sidewall of the acid extraction interface cavity is provided with an internal thread, and the outer side of the acid extraction tube is provided with an acid extraction tube positioning ring. The acid extraction tube positioning ring is locked and fixed between the end face of the external threaded connector and the bottom of the acid extraction interface cavity, and the external threaded connector is threadedly connected to the acid extraction interface cavity.

[0026] The negative pressure chamber of this invention includes an inverted cylinder and a cavity interface fixedly disposed at the opening of the cylinder. The bottom of the cavity interface has an externally threaded connector that fits around the outside of the acid extraction tube. The externally threaded connector is an interface cylinder with external threads on its outer side. The main body of the acid extraction interface is a cylinder fitted onto the outside of the acid extraction tube. Its top has an annular wall that forms the acid extraction interface cavity. The inner side of the annular wall has internal threads. The acid extraction interface cavity is threadedly connected to the externally threaded connector. An acid extraction tube positioning ring is disposed on the outside of the acid extraction tube, fixed between the bottom of the acid extraction interface cavity and the end face of the externally threaded connector.

[0027] The beneficial effects of this invention are: it ensures stable suction during the acid extraction process, increases the acid extraction speed, and ensures thorough acid extraction without leaving any residual acid, thus ensuring that product quality is not affected by residual acid; moreover, the device can be flexibly disassembled and assembled, and can be adapted to various battery models with 1*6 and 2*3 structures, exhibiting excellent versatility. Attached Figure Description

[0028] Figure 1 This is a structural cross-sectional view of Embodiment 1.

[0029] Figure 2 This is a cross-sectional view of the acid-extracted monomer in Example 3.

[0030] The components are: 1. Negative pressure unit; 2. First conduit; 3. Acid storage tank; 4. Second conduit; 5. Acid extraction assembly; 6. Third conduit; 7. Battery valve port; 51. Negative pressure chamber; 52. Chamber interface; 53. Acid extraction tube; 54. Acid extraction interface; 55. Annular groove; 56. Fourth conduit; 57. Limiting block; 521. External threaded connector; 531. Acid extraction tube positioning ring; 541. Acid extraction interface chamber. Detailed Implementation

[0031] Example 1:

[0032] This embodiment proposes a battery acid extraction device, referencing... Figure 1 The system includes a negative pressure unit 1, a first conduit 2, an acid storage tank 3, a second conduit 4, an acid extraction assembly 5, a third conduit 6, and a battery valve port 7. The acid extraction assembly 5 is provided with several acid extraction units, and adjacent acid extraction units are connected by a fourth conduit 56. Each acid extraction unit includes a negative pressure chamber 51 and an acid extraction tube 53. One end of the acid extraction tube 53 is inserted and fixed in the negative pressure chamber 51, and the other end of the acid extraction tube 53 is inserted into the battery valve port 7. The negative pressure unit 1 is connected to the acid storage tank 3 through the first conduit 2. The third conduit 6 is located at the outlet of the acid extraction assembly 5, and the acid storage tank 3 and the third conduit 6 are connected together through the second conduit 4.

[0033] The acid extraction unit of this invention is provided with an acid extraction interface 54, which is sleeved on the outside of the acid extraction tube 53. The bottom of the acid extraction interface 54 has an annular groove 55 for engaging with the battery valve hole 7. The number of acid extraction units depends on the number of battery valve holes 7; in this embodiment, six units are used. The six acid extraction units are arranged in a straight line, with the upper part of the acid extraction tube 53 higher than the bottom of the negative pressure chamber 51, and the lower part of the acid extraction tube 53 extending beyond the bottom of the acid extraction interface 54. The acid extraction tube 53 and the acid extraction interface 54 are fixedly connected but can be detached from the negative pressure chamber 51. Therefore, when dealing with battery valve holes 7 of different sizes, the corresponding acid extraction tube 53 and the acid extraction interface 54 can be replaced. The annular groove 55 ensures airtightness by embedding the battery valve hole 7 into the interface, while also acting as a limit to prevent the acid extraction assembly from detaching.

[0034] The working process is as follows: Start the negative pressure machine and fasten the acid extraction assembly to the six valve holes on the battery cover. At this time, the bottom of the acid extraction tube enters the upper cavity inside the battery and connects with the top of the battery electrode group. The residual acid in the cavity is put into the negative pressure cavity through the acid extraction tube and deposits. The accumulated residual acid level rises continuously. When it is higher than the top of the acid extraction tube, the excess part will flow out through the conduit at the same height as the top of the acid extraction tube and finally enter the acid storage tank for storage.

[0035] Using this invention for acid extraction ensures that there is no pressure loss between the battery interior, working components, and acid storage tank due to its excellent airtightness. This guarantees stable suction during the extraction process, increases extraction speed, and ensures thorough extraction without leaving any residual acid, thus preventing product quality from being affected by residual acid. Furthermore, the device can be flexibly disassembled and assembled, adapting to various battery models with 1*6 and 2*3 structures, demonstrating excellent versatility.

[0036] The outer wall of the acid extraction tube 53 of this invention fits into the inner wall of the acid extraction interface 54.

[0037] In this invention, the height of one end of the acid extraction tube 53 located in the negative pressure chamber 51 needs to be flush with the fourth conduit 56.

[0038] The acid extraction assembly 5 of this invention has a limiting block 57 connected between the negative pressure chambers 51 of adjacent acid extraction units to reinforce the assembly structure.

[0039] The second conduit 4 of this invention is designed as a flexible tube for easy handling by the operator. The first conduit 2, the third conduit 6, and the fourth conduit 56 are all designed as rigid tubes to improve structural connection strength. Both the conduits and the limiting block are detachable to accommodate the acid extraction requirements of different battery models.

[0040] Example 2:

[0041] This embodiment optimizes the acid extraction process based on Embodiment 1, and proposes a battery acid extraction device, referencing... Figure 1 The system includes a negative pressure unit 1, a first conduit 2, an acid storage tank 3, a second conduit 4, an acid extraction assembly 5, a third conduit 6, and a battery valve port 7. The acid extraction assembly 5 is provided with several acid extraction units, and adjacent acid extraction units are connected by a fourth conduit 56. Each acid extraction unit includes a negative pressure chamber 51 and an acid extraction tube 53. One end of the acid extraction tube 53 is inserted and fixed in the negative pressure chamber 51, and the other end of the acid extraction tube 53 is inserted into the battery valve port 7. The negative pressure unit 1 is connected to the acid storage tank 3 through the first conduit 2. The third conduit 6 is located at the outlet of the acid extraction assembly 5, and the acid storage tank 3 and the third conduit 6 are connected together through the second conduit 4.

[0042] The acid extraction unit of this utility model is provided with an acid extraction interface 54, which is sleeved on the outside of the acid extraction tube 53. The bottom of the acid extraction interface 54 is provided with an annular groove 55, which is used to be locked into the battery valve hole 7.

[0043] refer to Figure 1The negative pressure chamber 51 of this invention includes an inverted cylinder and a cavity interface 52 fixedly disposed at the opening of the cylinder. The cavity interface 52 is an elastic body with an inverted conical cross-section. In the initial state, the inner diameter of the cavity interface 52 is smaller than the outer diameter of the acid extraction tube 53. When the cavity interface 52 is sleeved on the acid extraction tube 53, the inner diameter of the cavity interface 52 is the same as the outer diameter of the acid extraction tube 53.

[0044] The number of acid extraction units depends on the number of battery valve holes 7; in this embodiment, six units are used. The six acid extraction units are arranged in a straight line, with the upper part of the acid extraction tube 53 higher than the bottom of the negative pressure chamber 51, and the lower part of the acid extraction tube 53 extending beyond the bottom of the acid extraction interface 54. The acid extraction tube 53 and the acid extraction interface 54 are fixedly connected and can be detached from the negative pressure chamber 51. Therefore, when dealing with battery valve holes 7 of different sizes, the corresponding acid extraction tube 53 and acid extraction interface 54 can be replaced. The annular groove 55 ensures airtightness by embedding the battery valve hole 7 into the interface, while also acting as a limiter to prevent the acid extraction assembly from detaching.

[0045] The working process is as follows: Start the negative pressure machine and fasten the acid extraction assembly to the six valve holes on the battery cover. At this time, the bottom of the acid extraction tube enters the upper cavity inside the battery and connects with the top of the battery electrode group. The residual acid in the cavity is put into the negative pressure cavity through the acid extraction tube and deposits. The accumulated residual acid level rises continuously. When it is higher than the top of the acid extraction tube, the excess part will flow out through the conduit at the same height as the top of the acid extraction tube and finally enter the acid storage tank for storage.

[0046] Using this invention for acid extraction ensures that there is no pressure loss between the battery interior, working components, and acid storage tank due to its excellent airtightness. This guarantees stable suction during the extraction process, increases extraction speed, and ensures thorough extraction without leaving any residual acid, thus preventing product quality from being affected by residual acid. Furthermore, the device can be flexibly disassembled and assembled, adapting to various battery models with 1*6 and 2*3 structures, demonstrating excellent versatility.

[0047] The outer wall of the acid extraction tube 53 of this invention fits into the inner wall of the acid extraction interface 54.

[0048] In this invention, the height of one end of the acid extraction tube 53 located in the negative pressure chamber 51 needs to be flush with the fourth conduit 56.

[0049] The acid extraction assembly 5 of this invention has a limiting block 57 connected between the negative pressure chambers 51 of adjacent acid extraction units to reinforce the assembly structure.

[0050] The second conduit 4 of this invention is designed as a flexible tube for easy handling by the operator. The first conduit 2, the third conduit 6, and the fourth conduit 56 are all designed as rigid tubes to improve structural connection strength. Both the conduits and the limiting block are detachable to accommodate the acid extraction requirements of different battery models.

[0051] Example 3:

[0052] This embodiment optimizes the acid extraction process based on Embodiment 1, and proposes a battery acid extraction device, referencing... Figure 1 The system includes a negative pressure unit 1, a first conduit 2, an acid storage tank 3, a second conduit 4, an acid extraction assembly 5, a third conduit 6, and a battery valve port 7. The acid extraction assembly 5 is provided with several acid extraction units, and adjacent acid extraction units are connected by a fourth conduit 56. Each acid extraction unit includes a negative pressure chamber 51 and an acid extraction tube 53. One end of the acid extraction tube 53 is inserted and fixed in the negative pressure chamber 51, and the other end of the acid extraction tube 53 is inserted into the battery valve port 7. The negative pressure unit 1 is connected to the acid storage tank 3 through the first conduit 2. The third conduit 6 is located at the outlet of the acid extraction assembly 5, and the acid storage tank 3 and the third conduit 6 are connected together through the second conduit 4.

[0053] The acid extraction unit of this utility model is provided with an acid extraction interface 54, which is sleeved on the outside of the acid extraction tube 53. The bottom of the acid extraction interface 54 is provided with an annular groove 55, which is used to be locked into the battery valve hole 7.

[0054] refer to Figure 2 The negative pressure chamber 51 of this utility model includes an inverted cylinder and a cavity interface 52 fixedly disposed at the opening of the cylinder. The bottom of the cavity interface 52 is provided with an externally threaded connector 521 that is sleeved on the outside of the acid extraction tube. The externally threaded connector 521 is an interface cylinder with external threads on its outer side. The main body of the acid extraction interface 54 is a cylinder sleeved on the outside of the acid extraction tube. Its top is provided with an annular wall that forms the acid extraction interface cavity 541. The inner side wall of the annular wall is provided with internal threads. The acid extraction interface cavity 541 is threadedly connected to the externally threaded connector 521. The outside of the acid extraction tube 53 is provided with an acid extraction tube positioning ring 531 that is fixed between the bottom of the acid extraction interface cavity 541 and the end face of the externally threaded connector 521.

[0055] The number of acid extraction units depends on the number of battery valve holes 7; in this embodiment, six units are used. The six acid extraction units are arranged in a straight line, with the upper part of the acid extraction tube 53 higher than the bottom of the negative pressure chamber 51, and the lower part of the acid extraction tube 53 extending beyond the bottom of the acid extraction interface 54. The acid extraction tube 53 and the acid extraction interface 54 are fixedly connected and can be detached from the negative pressure chamber 51. Therefore, when dealing with battery valve holes 7 of different sizes, the corresponding acid extraction tube 53 and acid extraction interface 54 can be replaced. The annular groove 55 ensures airtightness by embedding the battery valve hole 7 into the interface, while also acting as a limiter to prevent the acid extraction assembly from detaching.

[0056] The working process is as follows: Start the negative pressure machine and fasten the acid extraction assembly to the six valve holes on the battery cover. At this time, the bottom of the acid extraction tube enters the upper cavity inside the battery and connects with the top of the battery electrode group. The residual acid in the cavity is put into the negative pressure cavity through the acid extraction tube and deposits. The accumulated residual acid level rises continuously. When it is higher than the top of the acid extraction tube, the excess part will flow out through the conduit at the same height as the top of the acid extraction tube and finally enter the acid storage tank for storage.

[0057] Using this invention for acid extraction ensures that there is no pressure loss between the battery interior, working components, and acid storage tank due to its excellent airtightness. This guarantees stable suction during the extraction process, increases extraction speed, and ensures thorough extraction without leaving any residual acid, thus preventing product quality from being affected by residual acid. Furthermore, the device can be flexibly disassembled and assembled, adapting to various battery models with 1*6 and 2*3 structures, demonstrating excellent versatility.

[0058] The outer wall of the acid extraction tube 53 of this invention fits into the inner wall of the acid extraction interface 54.

[0059] In this invention, the height of one end of the acid extraction tube 53 located in the negative pressure chamber 51 needs to be flush with the fourth conduit 56.

[0060] The acid extraction assembly 5 of this invention has a limiting block 57 connected between the negative pressure chambers 51 of adjacent acid extraction units to reinforce the assembly structure.

[0061] The second conduit 4 of this invention is designed as a flexible tube for easy handling by the operator. The first conduit 2, the third conduit 6, and the fourth conduit 56 are all designed as rigid tubes to improve structural connection strength. Both the conduits and the limiting block are detachable to accommodate the acid extraction requirements of different battery models.

Claims

1. A battery acid extraction device, characterized in that it comprises: The negative pressure unit (1) is connected to the acid storage tank (3) through the first conduit (2); The acid storage tank (3) is connected to the third conduit (6) located at the outlet of the acid extraction assembly (5) via the second conduit (4); The acid extraction assembly (5) is provided with several acid extraction monomers connected by a fourth conduit (56); The acid extraction unit is provided with a negative pressure chamber (51) and an acid extraction tube (53). One end of the acid extraction tube (53) is fixed in the negative pressure chamber (51), and the other end of the acid extraction tube (53) is inserted into the battery valve hole (7).

2. The battery acid extraction device according to claim 1, characterized in that, The acid extraction tube (53) is fitted with an acid extraction interface (54) on the outside, and the bottom of the acid extraction interface (54) is provided with an annular groove (55) that is locked onto the battery valve hole (7).

3. A battery acid extraction device according to claim 2, characterized in that, The inner wall of the acid extraction port (54) fits into the outer wall of the acid extraction tube (53).

4. A battery acid extraction device according to claim 2, characterized in that, The end of the acid extraction tube (53) located in the negative pressure chamber (51) is flush with the fourth conduit (56).

5. A battery acid extraction device according to claim 4, characterized in that, Limiting blocks (57) are connected between adjacent negative pressure chambers (51).

6. A battery acid extraction device according to claim 4, characterized in that, The second conduit (4) is a flexible tube, while the first conduit (2), the third conduit (6), and the fourth conduit (56) are all rigid tubes.

7. A battery acid extraction device according to any one of claims 1-6, characterized in that, The negative pressure chamber (51) is provided with an inverted cylinder, and the opening of the cylinder is fixed with a cavity interface (52). The cavity interface (52) is an elastic body with an inverted conical cross section. Its inner diameter is smaller than the outer diameter of the acid extraction tube (53) in the initial state. When it is fitted onto the acid extraction tube (53), its inner diameter is the same as the outer diameter of the acid extraction tube (53).

8. A battery acid extraction device according to any one of claims 2-6, characterized in that, The negative pressure chamber (51) is provided with an inverted cylinder, and the opening of the cylinder is fixed with a cavity interface (52). The bottom of the cavity interface (52) is provided with an external threaded connector (521). The top of the acid extraction interface (54) is provided with an acid extraction interface cavity (541). The inner side wall of the acid extraction interface cavity (541) is provided with an internal thread. The outside of the acid extraction tube (53) is provided with an acid extraction tube positioning ring (531). The acid extraction tube positioning ring (531) is fixed between the end face of the external threaded connector (521) and the bottom of the acid extraction interface cavity (541). The external threaded connector (521) is threadedly connected to the acid extraction interface cavity (541).

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