Negative pressure formation system

Abstract

The utility model belongs to the technical field of battery formation, and particularly relates to a negative-pressure formation system, which comprises a formation converging device, a negative-pressure formation device and a negative-pressure formation device, the formation converging device comprises a formation cup set and a converging pipe, the formation cup set is communicated with the converging pipe, and the formation cup set is used for being connected with a liquid injection hole of a battery; the negative pressure liquid loss device is used for forming negative pressure in the formation and convergence device and is used for storing the electrolyte sucked from the battery; the liquid injection device is used for injecting liquid into the battery through the formation and convergence device; the liquid pumping device is used for pumping the electrolyte stored in the negative pressure liquid loss device into the liquid beating device; the liquid beating device and the negative pressure liquid losing device are communicated with the collecting pipe through the control valve; the negative pressure formation device has the beneficial effects that the electrolyte extracted from the battery in the negative pressure formation process is stored, so that the electrolyte is recycled, and the waste is reduced; and the stored electrolyte can be pumped back to the battery by utilizing the electrolyte pumping device, so that internal electrolyte adding of the battery is realized, and the electrolyte loss of the battery in the negative pressure formation process is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery formation, in particular to a negative pressure formation system. Background Art

[0002] In the battery manufacturing process, the formation process is an important link to ensure that the electrode material can provide maximum efficiency and stability.

[0003] In the prior art, the formation process for battery production is usually a negative pressure formation process. During the negative pressure formation process, it is easy to extract the electrolyte inside the battery, and the extracted electrolyte cannot return to the battery, which will cause a high battery fluid loss and electrolyte waste, thereby increasing the battery production cost. Utility Model Content

[0004] The purpose of the utility model is to provide a negative pressure formation system to solve the above-mentioned technical problems, so as to achieve the effect of recycling the extracted electrolyte.

[0005] In view of this, the utility model provides a negative pressure formation system, comprising:

[0006] A formation confluence device, comprising a formation cup and a confluence pipe, wherein the formation cup is connected to the confluence pipe, and the formation cup is used to connect to the injection hole of the battery;

[0007] A negative pressure liquid loss device, which is used to form a negative pressure inside the formation and confluence device and to store the electrolyte sucked out of the battery;

[0008] A liquid injection device, which is used to inject liquid into the battery through the formation confluence device;

[0009] A liquid pumping device, the liquid pumping device is used to pump the electrolyte stored in the negative pressure liquid loss device into the liquid pumping device;

[0010] The control valve, the liquid pumping device and the negative pressure liquid loss device are all connected with the manifold through the control valve.

[0011] Furthermore, it also includes:

[0012] A pressurizing device is connected to the manifold through a control valve and is used to purge the formation manifold.

[0013] Furthermore, the pressurizing device also includes:

[0014] Pressurization controller: pressurization controller is used to control the opening and closing and output of the pressurization device.

[0015] Furthermore, the liquid pumping device also includes:

[0016] The first gas-liquid separator, the output end of the liquid pumping device is connected with the manifold through the first gas-liquid separator.

[0017] Furthermore, the negative pressure fluid loss device also includes:

[0018] The second gas-liquid separator, the negative pressure liquid loss device is connected with the manifold through the second gas-liquid separator.

[0019] Furthermore, there are several forming cups, and all of them are connected to the manifold.

[0020] Further, the chemical cup set includes:

[0021] A suction nozzle is provided on the formation cup and is used to connect to the liquid injection hole of the battery;

[0022] The connecting pipe is arranged on the forming cup and is used for connecting the manifold.

[0023] Furthermore, the negative pressure fluid loss device includes a negative pressure fluid loss barrel.

[0024] Furthermore, the liquid pumping device includes a liquid pumping barrel.

[0025] Furthermore, the liquid pumping device is a liquid pumping machine.

[0026] The beneficial effects of the utility model are:

[0027] The electrolyte extracted from the battery during the negative pressure formation process can be collected and stored, so as to realize the recycling of the electrolyte and reduce the waste of the electrolyte; the stored electrolyte can be pumped back into the battery by means of the liquid pumping device, so as to realize the internal liquid filling of the battery, reduce the liquid loss of the battery during the negative pressure formation process, reduce the production cost and improve the economic benefit. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0029] Figure 2 It is a partial structural schematic diagram of the manifold in the utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the Zhonghua complete cup set of the utility model;

[0031] The symbols in the figure are:

[0032] 1. Forming cup set; 11. Suction nozzle; 12. Connecting pipe; 2. Manifold; 3. Negative pressure liquid loss device; 31. Negative pressure liquid loss barrel; 32. Second gas-liquid separator; 4. Liquid pumping device; 41. First gas-liquid separator; 42. Liquid pumping barrel; 5. Liquid pumping device; 6. Control valve; 7. Pressurizing device; 71. Pressurizing controller. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0035] Embodiment 1:

[0036] This embodiment provides a negative pressure formation system, comprising:

[0037] The formation confluence device comprises a formation cup 1 and a confluence pipe 2. The formation cup 1 is connected to the confluence pipe 2. The formation cup 1 is used to connect to the injection hole of the battery.

[0038] A negative pressure liquid loss device 3, which is used to form a negative pressure inside the formation and confluence device and to store the electrolyte sucked out from the battery;

[0039] The liquid pumping device 4 is used to pump liquid into the battery through the formation confluence device;

[0040] The liquid pumping device 5 is used to pump the electrolyte stored in the negative pressure liquid loss device 3 into the liquid pumping device 4;

[0041] The control valve 6 , the liquid pumping device 4 and the negative pressure liquid loss device 3 are all connected to the manifold 2 through the control valve 6 .

[0042] In this technical solution, if Figure 1As shown, when the negative pressure formation is performed, the control valve 6 controls the connection between the liquid pumping device 4 and the manifold 2 to remain closed, and the negative pressure loss device 3 and the manifold 2 are connected, so that negative pressure is formed inside the formation manifold. When the electrolyte inside the battery is drawn out through the formation cup 1, it will be sucked away by the negative pressure loss device 3 through the manifold 2 and stored. After the negative pressure formation is completed, the control valve 6 controls the connection between the liquid pumping device 4 and the manifold 2, and the negative pressure loss device 3 and the manifold 2 are closed. The electrolyte stored in the negative pressure loss device 3 is pumped into the liquid pumping device 4 through the liquid pumping device 5, and then the drawn electrolyte is pumped back into the battery through the formation manifold by the liquid pumping device 4.

[0043] In summary, through this structural design, the electrolyte extracted from the battery during the negative pressure formation process can be collected and stored, so as to realize the recycling of the electrolyte and reduce the waste of the electrolyte; the stored electrolyte can be pumped back into the battery by means of the liquid pumping device 4, so as to realize the internal liquid filling of the battery, reduce the amount of liquid loss of the battery during the negative pressure formation process, reduce the production cost and improve the economic benefit.

[0044] Embodiment 2:

[0045] This embodiment provides a negative pressure formation system, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0046] Furthermore, it also includes:

[0047] The pressurizing device 7 is connected to the manifold 2 through the control valve 6, and the pressurizing device 7 is used to purge the formation manifold.

[0048] In the present technical solution, the pressurizing device 7 can be a booster pump. After the negative pressure formation work is completed, the control valve 6 is used to control the negative pressure liquid loss device 3 and the manifold 2 to remain closed, and the liquid pumping device 4 and the manifold 2 to remain closed. Then the pressurizing device 7 is turned on, and the inert gas is input into the manifold 2 by the pressurizing device 7. The inside of the manifold 2 can be cleaned to remove electrolyte crystals generated in the manifold 2 due to long-term negative pressure, prevent the manifold 2 from being blocked, and ensure that the negative pressure formation operation can proceed smoothly.

[0049] Furthermore, the pressurizing device 7 further includes a pressurizing controller 71, which is used to control the opening and closing and output of the pressurizing device 7. By setting the pressurizing controller 71, the output strength of the pressurizing device 7 can be adjusted according to the purpose of the pressurizing device 7, which can ensure that the electrolyte crystals in the manifold 2 can be completely cleaned and the electrolyte after the liquid treatment can be completely transported back to the battery, which is highly practical.

[0050] Embodiment 3:

[0051] This embodiment provides a negative pressure formation system, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0052] Furthermore, the liquid pumping device 4 also includes:

[0053] The first gas-liquid separator 41 , the output end of the liquid pumping device 4 is connected with the manifold 2 through the first gas-liquid separator 41 .

[0054] In this technical solution, when the liquid pumping device 4 pumps the stored electrolyte back into the battery, the delivered electrolyte will first be separated by the first gas-liquid separator 41 to remove the gas in the electrolyte, and then enter the battery through the formation confluence device. Through this structural design, while achieving liquid filling inside the battery, it can prevent gas from entering the battery, thereby preventing the battery performance from being affected.

[0055] Embodiment 4:

[0056] This embodiment provides a negative pressure formation system, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0057] Furthermore, the negative pressure fluid loss device 3 also includes:

[0058] The second gas-liquid separator 32 , the negative pressure liquid loss device 3 is connected with the manifold 2 through the second gas-liquid separator 32 .

[0059] In the present technical solution, the electrolyte extracted during the negative pressure formation process is first separated by the second gas-liquid separator 32 to remove the gas in the electrolyte, and then the electrolyte is stored to further reduce the gas content of the electrolyte.

[0060] Embodiment 5:

[0061] This embodiment provides a negative pressure formation system, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0062] Furthermore, there are several forming cups 1 , and all of them are connected to the manifold 2 .

[0063] Further, the chemical set 1 comprises:

[0064] A suction nozzle 11, which is arranged on the formation cup 1 and is used to connect to the liquid injection hole of the battery;

[0065] The connecting pipe 12 is arranged on the forming cup 1 and is used for connecting the manifold 2 .

[0066] In the present technical solution, the number of the forming cups 1 can be multiple, and each forming cup 1 is connected to a corresponding battery, which increases the number of batteries in the negative pressure forming operation, thereby improving the working efficiency of the negative pressure forming operation. Figure 2 As shown, the suction nozzle 11 on the formation cup 1 is used to be plugged into the injection hole of the battery to ensure a stable connection between the formation cup 1 and the battery, and the connecting pipe 12 is used to connect the interior of the formation cup 1 with the manifold 2 to ensure a negative pressure environment is formed inside the formation cup 1.

[0067] Embodiment 6:

[0068] This embodiment provides a negative pressure formation system, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0069] Furthermore, the negative pressure fluid loss device 3 includes a negative pressure fluid loss barrel 31 .

[0070] Furthermore, the liquid pumping device 4 includes a liquid pumping barrel 42 .

[0071] Furthermore, the liquid pumping device 5 is a liquid pumping machine.

[0072] In the present technical solution, the negative pressure liquid loss barrel 31 is used to store the electrolyte extracted from the battery. The pumping machine can extract the liquid in the negative pressure liquid loss barrel 31 and transport it to the liquid pumping barrel 42. Then the liquid pumping barrel 42 pumps the transported electrolyte back to the battery through the formation and confluence device to achieve liquid filling inside the battery.

[0073] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A negative pressure formation system, characterized in that: include: A formation confluence device, comprising a formation cup (1) and a confluence pipe (2), wherein the formation cup (1) is connected to the confluence pipe (2), and the formation cup (1) is used to connect to a liquid injection hole of a battery; A negative pressure liquid loss device (3), the negative pressure liquid loss device (3) is used to form a negative pressure inside the formation and confluence device, and is used to store electrolyte sucked out of the battery; A liquid pumping device (4), the liquid pumping device (4) is used to pump liquid into the battery through the formation confluence device; A liquid pumping device (5), the liquid pumping device (5) is used to pump the electrolyte stored in the negative pressure liquid loss device (3) into the liquid pumping device (4); A control valve (6), wherein the liquid pumping device (4) and the negative pressure liquid loss device (3) are both connected to the manifold (2) via the control valve (6).

2. The negative pressure formation system according to claim 1, characterized in that: Also includes: A pressurizing device (7) is connected to the manifold (2) via a control valve (6), and the pressurizing device (7) is used to purge the formation manifold.

3. The negative pressure formation system according to claim 2, characterized in that: The pressurizing device (7) further comprises: A pressurizing controller (71), wherein the pressurizing controller (71) is used to control the opening and closing and output of the pressurizing device (7).

4. The negative pressure formation system according to claim 1, characterized in that: The liquid pumping device (4) further comprises: A first gas-liquid separator (41), wherein the output end of the liquid pumping device (4) is connected to the manifold (2) via the first gas-liquid separator (41).

5. The negative pressure formation system according to claim 1, characterized in that: The negative pressure fluid loss device (3) further comprises: A second gas-liquid separator (32), wherein the negative pressure liquid loss device (3) is connected to the manifold (2) via the second gas-liquid separator (32).

6. The negative pressure formation system according to claim 1, characterized in that: The number of the formation cups (1) is several, and all of them are connected to the manifold (2).

7. The negative pressure formation system according to claim 6, characterized in that: The chemical forming cup (1) comprises: A suction nozzle (11), the suction nozzle (11) being arranged on the formation cup (1) and being used for connecting to the liquid injection hole of the battery; A connecting pipe (12) is arranged on the formation cup (1) and is used for connecting the manifold (2).

8. The negative pressure formation system according to claim 1, characterized in that: The negative pressure fluid loss device (3) comprises a negative pressure fluid loss barrel (31).

9. The negative pressure formation system according to claim 1, characterized in that: The liquid pumping device (4) comprises a liquid pumping barrel (42).

10. The negative pressure formation system according to claim 1, characterized in that: The liquid pumping device (5) is a liquid pumping machine.

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