Bubble removing system for electrolyte

Abstract

The utility model relates to an electrolyte bubble removing system which comprises a first bubble removing tank, a second bubble removing tank and a vacuum suction unit, the first bubble removing tank is used for containing electrolyte, a first vacuum connector communicated with the interior of the first bubble removing tank is arranged on the first bubble removing tank, and the second bubble removing tank is used for containing the electrolyte. The vacuum suction unit comprises a vacuum tank, a first vacuum communication pipe and a second vacuum communication pipe, the vacuum tank is used for being communicated with a vacuum source, one end of the first vacuum communication pipe is communicated with the first vacuum connector, and the other end of the first vacuum communication pipe is communicated with the second vacuum connector; the other end of the first vacuum communicating pipe is communicated with the vacuum tank, one end of the second vacuum communicating pipe is communicated with the second vacuum connector, and the other end of the second vacuum communicating pipe is communicated with the vacuum tank. The electrolyte can be prevented from being sucked back into the vacuum tube or the vacuum source equipment, and the vacuum tube or the vacuum source equipment is prevented from being damaged.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery production equipment, and in particular, to an electrolyte bubble processing system. Background Art

[0002] At present, in the lithium battery industry, the injection process is an indispensable part of the battery production process. During the injection process, the battery needs to be injected with a fixed weight of electrolyte to ensure the consistency of battery performance and maximize the utilization rate of the electrolyte. The precise amount of electrolyte injection has become the core element of the injection process. However, in the actual injection process, since the liquid flow will involve air, there will be a small amount of bubbles in the electrolyte. Once the bubbles enter the electrolyte injection pump, it will directly lead to a decrease in the injection accuracy. Therefore, in the injection process, the electrolyte is generally debubbled before being injected into the battery.

[0003] In the related art, the vacuum source is usually directly connected to the tank storing the electrolyte through a vacuum pipe, so that negative pressure is generated in the tank to precipitate bubbles in the electrolyte. However, when removing bubbles, the electrolyte may be sucked back into the vacuum pipe, causing the vacuum pipe to be blocked, or even sucked back into the vacuum source equipment, causing the vacuum source equipment to malfunction, affecting the debubbling process of the electrolyte. Utility Model Content

[0004] The purpose of the present disclosure is to provide an electrolyte bubble treatment system to solve the technical problems existing in the related art.

[0005] In order to achieve the above object, the present disclosure provides an electrolyte degassing system, comprising:

[0006] A first bubble removal tank, used to contain electrolyte, wherein the first bubble removal tank is provided with a first vacuum interface communicating with the interior of the first bubble removal tank;

[0007] A second bubble removal tank, used to contain electrolyte, the second bubble removal tank is provided with a second vacuum interface communicating with the interior of the second bubble removal tank;

[0008] A vacuum suction unit includes a vacuum tank, a first vacuum connecting tube, and a second vacuum connecting tube, wherein the vacuum tank is used to connect with a vacuum source, one end of the first vacuum connecting tube is connected with the first vacuum interface, the other end of the first vacuum connecting tube is connected with the vacuum tank, one end of the second vacuum connecting tube is connected with the second vacuum interface, and the other end of the second vacuum connecting tube is connected with the vacuum tank.

[0009] Optionally, the electrolyte degassing system further includes a first switch valve and a second switch valve, wherein the first switch valve is arranged on the first vacuum connecting pipe, and the second switch valve is arranged on the second vacuum connecting pipe.

[0010] Optionally, the first bubble removal tank is further provided with a first atmospheric interface, the second bubble removal tank is further provided with a second atmospheric interface, and the electrolyte degassing system further comprises a first atmospheric communication pipe, a second atmospheric communication pipe, a third switch valve and a fourth switch valve;

[0011] One end of the first atmosphere communication tube is communicated with the first atmosphere interface, the other end of the first atmosphere communication tube is communicated with the outside atmosphere, and the third switch valve is arranged on the first atmosphere communication tube;

[0012] One end of the second atmosphere communication tube is communicated with the second atmosphere interface, the other end of the second atmosphere communication tube is communicated with the outside atmosphere, and the fourth switch valve is arranged on the second atmosphere communication tube.

[0013] Optionally, a first pressure detector is provided in the first bubble removal tank, and the first pressure detector is used to detect the air pressure value in the first bubble removal tank; and a second pressure detector is provided in the second bubble removal tank, and the second pressure detector is used to detect the air pressure value in the second bubble removal tank;

[0014] The electrolyte degassing system also includes a controller, and the first pressure detector, the second pressure detector, the first switch valve, the second switch valve, the third switch valve and the fourth switch valve are all electrically connected to the controller.

[0015] Optionally, the electrolyte degassing system further includes a first buffer tank and a second buffer tank, wherein the first buffer tank is arranged on the first vacuum connecting pipe and located upstream of the first switch valve, and the second buffer tank is arranged on the second vacuum connecting pipe and located upstream of the second switch valve;

[0016] The first buffer tank is provided with a first drain port, which is communicated with a first drain valve. The second buffer tank is provided with a second drain port, which is communicated with a second drain valve.

[0017] Optionally, the vacuum suction unit also includes a third vacuum connecting pipe and a fifth switch valve. A third vacuum interface is provided on the vacuum tank. One end of the third vacuum connecting pipe is connected to the third vacuum interface. The other end of the third vacuum connecting pipe is used to connect to the vacuum source. The fifth switch valve is provided on the third vacuum connecting pipe.

[0018] Optionally, a third liquid discharge port is provided on the vacuum tank, and the third liquid discharge port is communicated with a third liquid discharge valve.

[0019] Optionally, the first bubble removal tank is provided with a first liquid outlet, the second bubble removal tank is provided with a second liquid outlet, the electrolyte bubble removal system further comprises a liquid storage tank, a first liquid outlet pipe and a second liquid outlet pipe, and the liquid storage tank is provided with a liquid inlet;

[0020] One end of the first liquid outlet pipe is connected to the first liquid outlet, and the other end of the first liquid outlet pipe is connected to the liquid inlet. One end of the second liquid outlet pipe is connected to the second liquid outlet, and the other end of the second liquid outlet pipe is connected to the liquid inlet.

[0021] Optionally, a sixth switch valve is provided on the first liquid outlet pipe, and a seventh switch valve is provided on the second liquid outlet pipe.

[0022] Optionally, the electrolyte degassing system also includes an injection tube and an injection pump arranged on the injection tube, and the liquid storage tank is also provided with an injection outlet, one end of the injection tube is connected to the injection outlet, and the other end of the injection tube can be used to inject electrolyte into the battery.

[0023] Optionally, the first bubble removal tank is provided with a first electrolyte inlet, the second bubble removal tank is provided with a second electrolyte inlet, and the electrolyte bubble removal system further includes a first electrolyte delivery pipe, a second electrolyte delivery pipe, an eighth switch valve and a ninth switch valve;

[0024] One end of the first electrolyte delivery pipe is connected to the electrolyte supply source, the other end of the first electrolyte delivery pipe is connected to the first electrolyte inlet, and the eighth switch valve is arranged on the first electrolyte delivery pipe;

[0025] One end of the second electrolyte delivery pipe is connected to the electrolyte supply source, the other end of the second electrolyte delivery pipe is connected to the second electrolyte inlet, and the ninth switch valve is arranged on the second electrolyte delivery pipe.

[0026] Through the above technical scheme, since the first bubble removal tank and the second bubble removal tank are connected to the vacuum tank through the first vacuum connecting pipe and the second vacuum connecting pipe respectively, and the vacuum tank is connected to the vacuum source, when it is necessary to remove bubbles from the electrolyte in the first bubble removal tank and the second bubble removal tank, the negative pressure provided by the vacuum source can enter the first bubble removal tank and the second bubble removal tank through the vacuum tank, the first vacuum connecting pipe and the second vacuum connecting pipe. When a small amount of electrolyte in the first bubble removal tank and the second bubble removal tank is sucked back into the first vacuum connecting pipe and the second vacuum connecting pipe due to the negative pressure, the electrolyte can flow into the vacuum tank, which can prevent the sucked electrolyte from clogging the first vacuum connecting pipe and the second vacuum connection, or flowing into the vacuum source, affecting the equipment in the vacuum source. In other words, the vacuum tank can be used as a transition device between the first bubble removal tank and the vacuum source, and while ensuring that the first bubble removal tank and the second bubble removal tank are evacuated, a small amount of sucked electrolyte can also be collected.

[0027] Furthermore, the first bubble removal tank and the second bubble removal tank are connected to the vacuum source through the same vacuum tank, so that the vacuum source can provide negative pressure for the first bubble removal tank to remove bubbles from the electrolyte in the first bubble removal tank, and can also provide negative pressure for the second bubble removal tank to remove bubbles from the electrolyte in the second bubble removal tank. In other words, the vacuum source can vacuum the first bubble removal tank and the second bubble removal tank at the same time, or can vacuum the first bubble removal tank and the second bubble removal tank alternately. Such a design can improve the efficiency of debubbling the electrolyte while reducing the equipment cost.

[0028] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0030] Figure 1 is a flow diagram of an electrolyte degassing system provided in one embodiment of the present disclosure;

[0031] Figure 2 It is a three-dimensional schematic diagram of the connection between a first bubble removal tank and a first buffer tank of an electrolyte bubble removal system provided in an embodiment of the present disclosure.

[0032] Description of Reference Numerals

[0033] 10-first bubble removal tank; 11-first vacuum interface; 12-first atmosphere interface; 13-first liquid outlet; 14-first electrolyte inlet; 15-fourth drain outlet; 151-fourth drain valve; 20-second bubble removal tank; 21-second vacuum interface; 22-second atmosphere interface; 23-second liquid outlet; 24-second electrolyte inlet; 25-fifth drain outlet; 251-fifth drain valve; 30-vacuum tank; 31-third vacuum interface; 32-third drain outlet; 321-third drain valve; 40-first vacuum connecting pipe; 401-first switch valve; 41-second vacuum connecting pipe; 411-second switch valve; 42-third vacuum connecting pipe; 421-fifth switch valve ;43-first liquid outlet pipe;431-sixth switch valve;44-second liquid outlet pipe;441-seventh switch valve;45-liquid injection pipe;451-liquid injection pump;46-first electrolyte delivery pipe;461-eighth switch valve;47-second electrolyte delivery pipe;471-ninth switch valve;48-transparent observation tube;50-vacuum source;51-electrolyte supply source;60-first atmosphere connecting pipe;601-third switch valve;61-second atmosphere connecting pipe;611-fourth switch valve;70-first buffer tank;71-first liquid discharge port;711-first liquid discharge valve;80-liquid storage tank;81-liquid inlet;82-liquid injection outlet;83-sixth liquid discharge port;831-sixth liquid discharge valve. DETAILED DESCRIPTION

[0034] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0035] In the description of the present disclosure, unless otherwise stated, the directional words used, such as "upstream, downstream", are defined by the flow direction of the fluid or gas, and the terms "inside, outside" refer to the inside and outside of the corresponding structural contour. In addition, the terms "first", "second", etc. are only used to distinguish one element from another element, and do not have order and importance.

[0036] In the description of the present disclosure, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "connected", and "installed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0037] like Figure 1 to Figure 2As shown, the present disclosure provides an electrolyte degassing system, including a first bubble degassing tank 10, a second bubble degassing tank 20 and a vacuum suction unit, the first bubble degassing tank 10 is used to contain electrolyte, and the first bubble degassing tank 10 is provided with a first vacuum interface 11 connected to the interior of the first bubble degassing tank 10, the second bubble degassing tank 20 is used to contain electrolyte, and the second bubble degassing tank 20 is provided with a second vacuum interface 21 connected to the interior of the second bubble degassing tank 20, the vacuum suction unit includes a vacuum tank 30, a first vacuum connecting pipe 40, and a second vacuum connecting pipe 41, the vacuum tank 30 is used to communicate with a vacuum source 50, one end of the first vacuum connecting pipe 40 is connected to the first vacuum interface 11, the other end of the first vacuum connecting pipe 40 is connected to the vacuum tank 30, one end of the second vacuum connecting pipe 41 is connected to the second vacuum interface 21, and the other end of the second vacuum connecting pipe 41 is connected to the vacuum tank 30.

[0038] Through the above technical solution, since the first bubble removal tank 10 and the second bubble removal tank 20 are connected to the vacuum tank 30 through the first vacuum connecting pipe 40 and the second vacuum connecting pipe 41 respectively, and the vacuum tank 30 is connected to the vacuum source 50, when it is necessary to remove bubbles from the electrolyte in the first bubble removal tank 10 and the second bubble removal tank 20, the negative pressure provided by the vacuum source 50 can enter the first bubble removal tank 10 and the second bubble removal tank 20 through the vacuum tank 30, the first vacuum connecting pipe 40 and the second vacuum connecting pipe 41. When a small amount of electrolyte in the first bubble removal tank 10 and the second bubble removal tank 20 is sucked back into the first vacuum connecting pipe 40 and the second vacuum connecting pipe 41 due to the negative pressure, the electrolyte can flow into the vacuum tank 30, so that the sucked back electrolyte can be prevented from clogging the first vacuum connecting pipe 40 and the second vacuum connecting pipe 41, or flowing into the vacuum source 50, affecting the equipment in the vacuum source 50. That is to say, the vacuum tank 30 can serve as a transition device between the first bubble removal tank 10 and the vacuum source 50. While ensuring that the first bubble removal tank 10 and the second bubble removal tank 20 are evacuated, a small amount of electrolyte sucked back can also be collected.

[0039] Furthermore, the first bubble removal tank 10 and the second bubble removal tank 20 are connected to the vacuum source 50 through the same vacuum tank 30, so that the vacuum source 50 can provide negative pressure for the first bubble removal tank 10 to remove bubbles from the electrolyte in the first bubble removal tank 10, and can also provide negative pressure for the second bubble removal tank 20 to remove bubbles from the electrolyte in the second bubble removal tank 20. In other words, the vacuum source 50 can vacuum the first bubble removal tank 10 and the second bubble removal tank 20 at the same time, and can also vacuum the first bubble removal tank 10 and the second bubble removal tank 20 alternately. Such a design can improve the efficiency of degassing the electrolyte while reducing the equipment cost.

[0040] Optionally, the equipment in the vacuum source 50 may include a vacuum pump.

[0041] like Figure 1 As shown, optionally, the electrolyte degassing system may further include a first switch valve 401 and a second switch valve 411, wherein the first switch valve 401 is disposed on the first vacuum connecting pipe 40, and the second switch valve 411 is disposed on the second vacuum connecting pipe 41. Thus, when the first switch valve 401 is opened and the second switch valve 411 is closed, the vacuum source 50 may vacuum pump the first bubble degassing tank 10 through the vacuum tank 30 and the first vacuum connecting pipe 40, and after the degassing work of the electrolyte in the first bubble degassing tank 10 is completed, the first switch valve 401 may be closed and the second switch valve 411 may be opened, and the vacuum source 50 may vacuum pump the second bubble degassing tank 20 through the vacuum tank 30 and the second vacuum connecting pipe 41, so that the first bubble degassing tank 10 and the second bubble degassing tank 20 may be alternately degassing, that is, the first bubble degassing tank 10 and the second bubble degassing tank 20 may provide bubble-free electrolyte support for the liquid injection process in turn. Of course, the first switch valve 401 and the second switch valve 411 can also be opened at the same time, so that the electrolyte debubbling process is performed in the first bubble removal tank 10 and the second bubble removal tank 20 at the same time.

[0042] In order to improve the degassing effect of the electrolyte in the first degassing tank 10 and the electrolyte in the second degassing tank 20, as an embodiment, Figure 1 As shown, the first bubble degassing tank 10 is also provided with a first atmospheric interface 12, and the second bubble degassing tank 20 is also provided with a second atmospheric interface 22. The electrolyte degassing system also includes a first atmospheric connecting pipe 60, a second atmospheric connecting pipe 61, a third switch valve 601 and a fourth switch valve 611. One end of the first atmospheric connecting pipe 60 is connected to the first atmospheric interface 12, and the other end of the first atmospheric connecting pipe 60 is connected to the outside atmosphere. The third switch valve 601 is arranged on the first atmospheric connecting pipe 60, one end of the second atmospheric connecting pipe 61 is connected to the second atmospheric interface 22, and the other end of the second atmospheric connecting pipe 61 is connected to the outside atmosphere. The fourth switch valve 611 is arranged on the second atmospheric connecting pipe 61.

[0043] When the vacuum source 50 performs a degassing process on the electrolyte in the first bubble removal tank 10, the first switch valve 401 can be opened and the third switch valve 601 can be closed, so that the vacuum source 50 can perform a vacuum suction on the first bubble removal tank 10. After the first vacuum suction of the first bubble removal tank 10 is completed, the first switch valve 401 can be closed and the third switch valve 601 can be opened, so that the vacuum source 50 stops vacuum suction on the first bubble removal tank 10, and the external atmosphere can enter the first bubble removal tank 10 through the first atmosphere connecting pipe 60, that is, the air pressure in the first bubble removal tank 10 is changed from negative pressure to normal pressure, and then the third switch valve 601 is closed and the first switch valve 401 is opened, so that the vacuum source 50 continues to perform a vacuum suction on the first bubble removal tank 10, and this is repeated many times. Through the above operation, the bubbles in the electrolyte in the first bubble removal tank 10 can be removed as much as possible, which is conducive to improving the degassing effect of the first bubble removal tank 10.

[0044] It is understandable that when the vacuum source 50 performs a debubbling process on the electrolyte in the second debubbling tank 20 , the above operation can also be performed by operating the second switch valve 411 and the fourth switch valve 611 .

[0045] As an implementation method, Figure 1 As shown, a first pressure detector may be provided in the first bubble removal tank 10, and the first pressure detector is used to detect the air pressure value in the first bubble removal tank 10. A second pressure detector may be provided in the second bubble removal tank 20, and the second pressure detector is used to detect the air pressure value in the second bubble removal tank 20. The electrolyte bubble removal system also includes a controller, and the first pressure detector, the second pressure detector, the first switch valve 401, the second switch valve 411, the third switch valve 601 and the fourth switch valve 611 are all electrically connected to the controller.

[0046] When the first pressure detector detects that the air pressure value in the first bubble degassing tank 10 reaches a first preset air pressure value, the controller can control the first switch valve 401 to close and control the third switch valve 601 to open, thereby stopping the vacuum source 50 from vacuuming the first bubble degassing tank 10 and allowing the outside atmosphere to enter the first bubble degassing tank 10. When the first pressure detector detects that the air pressure value in the first bubble degassing tank 10 reaches a second preset air pressure value, the third switch valve 601 can be controlled to close. After the air pressure value in the first bubble degassing tank 10 reaches the second preset air pressure value and a preset time has passed, the controller can control the first switch valve 401 to open and control the third switch valve 601 to close.

[0047] When the second pressure detector detects that the air pressure value in the second bubble degassing tank 20 reaches the third preset air pressure value, the controller can control the second switch valve 411 to close and control the fourth switch valve 611 to open, thereby stopping the vacuum source 50 from vacuuming the second bubble degassing tank 20 and allowing the outside atmosphere to enter the second bubble degassing tank 20. When the second pressure detector detects that the air pressure value in the second bubble degassing tank 20 reaches the fourth preset air pressure value, the fourth switch valve 611 can be controlled to close. After the air pressure value in the second bubble degassing tank 20 reaches the fourth preset air pressure value and a preset time has passed, the controller can control the second switch valve 411 to open and control the fourth switch valve 611 to close.

[0048] The number of times the first bubble removal tank 10 and the second bubble removal tank 20 return to normal pressure (i.e., the air pressure in the first bubble removal tank 10 and the second bubble removal tank 20 is atmospheric pressure) can be set in the controller, so as to automatically perform the above operations and realize the automation of electrolyte bubble removal.

[0049] Once the electrolyte collected in the vacuum tank 30 reaches a certain liquid level, the vacuum source device needs to be turned off before the electrolyte in the vacuum tank 30 is discharged, so that the first bubble removal tank 10 and the second bubble removal tank 20 will be in a shutdown state. Therefore, in order to reduce the number of times the vacuum tank 30 discharges the electrolyte to improve the bubble removal efficiency of the first bubble removal tank 10 and the second bubble removal tank 20, as an implementation method, Figure 1 to Figure 2 As shown, the electrolyte degassing system may further include a first buffer tank 70 and a second buffer tank, wherein the first buffer tank 70 is disposed on the first vacuum connecting pipe 40 and is located upstream of the first switch valve 401, and the second buffer tank is disposed on the second vacuum connecting pipe 41 and is located upstream of the second switch valve 411, and the first buffer tank 70 is provided with a first drain port 71, which is connected to the first drain valve 711, and the second buffer tank is provided with a second drain port, which is connected to the second drain valve. Here, the upstream of the first switch valve 401 refers to a portion from the first vacuum interface 11 to the first switch valve 401, and the upstream of the second switch valve 411 refers to a portion from the second vacuum interface 21 to the second switch valve 411.

[0050] Optionally, the volume of the first buffer tank 70 and the volume of the second buffer tank may both be smaller than the volume of the vacuum tank 30 .

[0051] When the first bubble removal tank 10 is removing bubbles, if the electrolyte in the first bubble removal tank 10 is back-sucked, the back-sucked electrolyte may be divided into two parts, one part of the electrolyte remains in the first buffer tank 70 under the action of gravity, and the other part of the electrolyte flows into the vacuum tank 30 through the first vacuum connecting pipe 40. Similarly, when the second bubble removal tank 20 is removing bubbles, if the electrolyte in the second bubble removal tank 20 is back-sucked, the back-sucked electrolyte may be divided into two parts, one part of the electrolyte remains in the second buffer tank under the action of gravity, and the other part of the electrolyte flows into the vacuum tank 30 through the second vacuum connecting pipe 41. In this way, the amount of electrolyte back-sucked from the first bubble removal tank 10 and the second bubble removal tank 20 respectively entering the vacuum tank 30 can be reduced, so that the speed at which the liquid level of the electrolyte in the vacuum tank 30 reaches the preset liquid level is reduced, which is conducive to reducing the number of times the vacuum tank 30 discharges the electrolyte.

[0052] In addition, if the liquid level of the electrolyte in the first buffer tank 70 reaches the preset liquid level first, the first switch valve 401 can be closed to stop the first bubble removal tank 10 from vacuuming and removing bubbles, and the first drain valve 711 can be opened to discharge the electrolyte in the first buffer tank 70. At this time, the second switch valve 411 can be in an open state, and the second bubble removal tank 20 can be vacuumed and bubbled. If the liquid level of the electrolyte in the second buffer tank reaches the preset liquid level, the second switch valve 411 can be closed to stop the second bubble removal tank 20 from vacuuming, and the second drain valve can be opened to discharge the electrolyte in the second buffer tank. At this time, the first switch valve 401 can be in an open state, and the first bubble removal tank 10 can be vacuumed and bubbled. In other words, the draining operation of the first buffer tank 70 does not affect the degassing operation of the second bubble removal tank 20, and the draining operation of the second buffer tank does not affect the degassing operation of the first bubble removal tank 10. The first bubble removal tank 10 and the second bubble removal tank 20 can perform degassing treatment alternately.

[0053] Optionally, the first drain port 71 may be disposed at the bottom of the first buffer tank 70 , and the second drain port may be disposed at the bottom of the second buffer tank.

[0054] As an implementation method, Figure 1 As shown, the vacuum suction unit may further include a third vacuum connecting pipe 42 and a fifth switch valve 421. The vacuum tank 30 is provided with a third vacuum interface 31. One end of the third vacuum connecting pipe 42 is connected to the third vacuum interface 31. The other end of the third vacuum connecting pipe 42 is used to communicate with the vacuum source 50. The third vacuum connecting pipe 42 is provided with a fifth switch valve 421. When the liquid level of the electrolyte in the vacuum tank 30 reaches a preset liquid level, the fifth switch valve 421 may be closed to stop the vacuum source 50 from vacuum suction.

[0055] In order to facilitate the discharge of the electrolyte in the vacuum tank 30, optionally, as Figure 1 As shown, the vacuum tank 30 is provided with a third liquid discharge port 32, which is communicated with a third liquid discharge valve 321. The electrolyte in the vacuum tank 30 can be discharged through the third liquid discharge valve 321.

[0056] Optionally, the third drain valve 321 is disposed at the bottom of the vacuum tank 30 .

[0057] In order to store the electrolyte after the bubbles are removed so as to facilitate the subsequent injection of electrolyte into the battery, such as Figure 1 As shown, the first bubble removal tank 10 is provided with a first liquid outlet 13, the second bubble removal tank 20 is provided with a second liquid outlet 23, the electrolyte bubble removal system further includes a liquid storage tank 80, a first liquid outlet pipe 43 and a second liquid outlet pipe 44, the liquid storage tank 80 is provided with a liquid inlet 81, one end of the first liquid outlet pipe 43 is connected to the first liquid outlet 13, the other end of the first liquid outlet pipe 43 is connected to the liquid inlet 81, one end of the second liquid outlet pipe 44 is connected to the second liquid outlet 23, and the other end of the second liquid outlet pipe 44 is connected to the liquid inlet 81. In this way, the electrolyte after the bubbles are removed in the first bubble removal tank 10 and the electrolyte after the bubbles are removed in the second bubble removal tank 20 can flow into the liquid storage tank 80 through the first liquid outlet pipe 43 and the second liquid outlet pipe 44 respectively for storage.

[0058] As an implementation method, Figure 1 As shown, a sixth switch valve 431 is disposed on the first liquid outlet pipe 43 , and a seventh switch valve 441 is disposed on the second liquid outlet pipe 44 .

[0059] Specifically, when the first bubble removal tank 10 is removing bubbles, the sixth switch valve 431 can be closed to prevent the electrolyte in the first bubble removal tank 10 from flowing into the liquid storage tank 80 before the bubble removal is completed. After the first bubble removal tank 10 completes the bubble removal process, the sixth switch valve 431 can be opened so that the electrolyte in the first bubble removal tank 10 after the bubbles are removed can flow into the liquid storage tank 80 for storage.

[0060] When the second bubble removal tank 20 is removing bubbles, the seventh switch valve 441 can be closed to prevent the electrolyte in the first bubble removal tank 10 from flowing into the liquid storage tank 80 before the bubble removal is completed. After the second bubble removal tank 20 completes the bubble removal process, the seventh switch valve 441 can be opened so that the electrolyte in the second bubble removal tank 20 after the bubbles are removed can flow into the liquid storage tank 80 for storage.

[0061] Alternatively, if Figure 1As shown, the electrolyte degassing system further includes an injection pipe 45 and an injection pump 451 disposed on the injection pipe 45. The liquid storage tank 80 is further provided with an injection outlet 82. One end of the injection pipe 45 is connected to the injection outlet 82, and the other end of the injection pipe 45 can be used to inject electrolyte into the battery. In this way, the injection pump 451 can be used to inject the bubble-free electrolyte in the liquid storage tank 80 into the battery.

[0062] Alternatively, if Figure 1 As shown, the first bubble removal tank 10 is provided with a first electrolyte inlet 14, and the second bubble removal tank 20 is provided with a second electrolyte inlet 24. The electrolyte bubble removal system also includes a first electrolyte delivery pipe 46, a second electrolyte delivery pipe 47, an eighth switch valve 461 and a ninth switch valve 471. One end of the first electrolyte delivery pipe 46 is connected to the electrolyte supply source 51, and the other end of the first electrolyte delivery pipe 46 is connected to the first electrolyte inlet 14. The eighth switch valve 461 is arranged on the first electrolyte delivery pipe 46, one end of the second electrolyte delivery pipe 47 is connected to the electrolyte supply source 51, and the other end of the second electrolyte delivery pipe 47 is connected to the second electrolyte inlet 24. The ninth switch valve 471 is arranged on the second electrolyte delivery pipe 47. In this way, the electrolyte supply source 51 can be controlled to deliver electrolyte to the first bubble removal tank 10 by controlling the opening or closing of the eighth switch valve 461, and the electrolyte supply source 51 can be controlled to deliver electrolyte to the second bubble removal tank 20 by controlling the opening or closing of the ninth switch valve 471.

[0063] Alternatively, if Figure 1 As shown, a transparent observation tube 48 may be provided on the first bubble removal tank 10 , the second bubble removal tank 20 , the vacuum tank 30 , the first buffer tank 70 , the second buffer tank and the liquid storage tank, and a liquid level sensor may be provided on the transparent observation tube 48 .

[0064] In addition, since the first bubble removal tank 10, the second bubble removal tank 20 and the liquid storage tank 80 may need to be cleaned and discharged after long-term use, optionally, as Figure 1 As shown, a fourth drain port 15 may be provided at the bottom of the first bubble removal tank 10, which is connected to a fourth drain valve 151; a fifth drain port 25 may be provided at the bottom of the second bubble removal tank 20, which is connected to a fifth drain valve 251; a sixth drain port 83 may be provided at the bottom of the liquid storage tank 80, which is connected to a sixth drain valve 831.

[0065] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0066] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0067] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. An electrolyte degassing system, characterized in that: include: A first bubble removal tank, used to contain electrolyte, wherein the first bubble removal tank is provided with a first vacuum interface communicating with the interior of the first bubble removal tank; A second bubble removal tank, used to contain electrolyte, the second bubble removal tank is provided with a second vacuum interface communicating with the interior of the second bubble removal tank; The vacuum suction unit includes a vacuum tank, a first vacuum connecting tube, and a second vacuum connecting tube. The vacuum tank is used to connect with a vacuum source, one end of the first vacuum connecting tube is connected with the first vacuum interface, the other end of the first vacuum connecting tube is connected with the vacuum tank, one end of the second vacuum connecting tube is connected with the second vacuum interface, and the other end of the second vacuum connecting tube is connected with the vacuum tank.

2. The electrolyte degassing system according to claim 1, characterized in that: The electrolyte degassing system further includes a first switch valve and a second switch valve, wherein the first switch valve is arranged on the first vacuum connecting pipe, and the second switch valve is arranged on the second vacuum connecting pipe.

3. The electrolyte degassing system according to claim 2, characterized in that: The first bubble removal tank is also provided with a first atmospheric interface, the second bubble removal tank is also provided with a second atmospheric interface, and the electrolyte bubble removal system further includes a first atmospheric communication pipe, a second atmospheric communication pipe, a third switch valve and a fourth switch valve; One end of the first atmosphere communication tube is communicated with the first atmosphere interface, the other end of the first atmosphere communication tube is communicated with the outside atmosphere, and the third switch valve is arranged on the first atmosphere communication tube; One end of the second atmosphere communication tube is communicated with the second atmosphere interface, the other end of the second atmosphere communication tube is communicated with the outside atmosphere, and the fourth switch valve is arranged on the second atmosphere communication tube.

4. The electrolyte degassing system according to claim 3, characterized in that: A first pressure detector is provided in the first bubble removal tank, and the first pressure detector is used to detect the air pressure value in the first bubble removal tank; a second pressure detector is provided in the second bubble removal tank, and the second pressure detector is used to detect the air pressure value in the second bubble removal tank; The electrolyte degassing system also includes a controller, and the first pressure detector, the second pressure detector, the first switch valve, the second switch valve, the third switch valve and the fourth switch valve are all electrically connected to the controller.

5. The electrolyte degassing system according to claim 2, characterized in that: The electrolyte degassing system further includes a first buffer tank and a second buffer tank, wherein the first buffer tank is disposed on the first vacuum connecting pipe and located upstream of the first switch valve, and the second buffer tank is disposed on the second vacuum connecting pipe and located upstream of the second switch valve; The first buffer tank is provided with a first drain port, which is communicated with a first drain valve. The second buffer tank is provided with a second drain port, which is communicated with a second drain valve.

6. The electrolyte degassing system according to claim 1, characterized in that: The vacuum suction unit also includes a third vacuum connecting pipe and a fifth switch valve. The vacuum tank is provided with a third vacuum interface. One end of the third vacuum connecting pipe is connected to the third vacuum interface, and the other end of the third vacuum connecting pipe is used to connect to the vacuum source. The third vacuum connecting pipe is provided with the fifth switch valve.

7. The electrolyte degassing system according to any one of claims 1 to 6, characterized in that: The vacuum tank is provided with a third liquid discharge port, and the third liquid discharge port is communicated with a third liquid discharge valve.

8. The electrolyte degassing system according to any one of claims 1 to 6, characterized in that: The first bubble removal tank is provided with a first liquid outlet, the second bubble removal tank is provided with a second liquid outlet, the electrolyte bubble removal system further comprises a liquid storage tank, a first liquid outlet pipe and a second liquid outlet pipe, and the liquid storage tank is provided with a liquid inlet; One end of the first liquid outlet pipe is connected to the first liquid outlet, and the other end of the first liquid outlet pipe is connected to the liquid inlet. One end of the second liquid outlet pipe is connected to the second liquid outlet, and the other end of the second liquid outlet pipe is connected to the liquid inlet.

9. The electrolyte degassing system according to claim 8, characterized in that: The first liquid outlet pipe is provided with a sixth switch valve, and the second liquid outlet pipe is provided with a seventh switch valve.

10. The electrolyte degassing system according to claim 8, characterized in that: The electrolyte degassing system also includes an injection pipe and an injection pump arranged on the injection pipe. The liquid storage tank is also provided with an injection outlet. One end of the injection pipe is connected to the injection outlet, and the other end of the injection pipe can be used to inject electrolyte into the battery.

11. The electrolyte degassing system according to any one of claims 1 to 6, characterized in that: The first bubble removal tank is provided with a first electrolyte inlet, the second bubble removal tank is provided with a second electrolyte inlet, and the electrolyte bubble removal system further includes a first electrolyte delivery pipe, a second electrolyte delivery pipe, an eighth switch valve and a ninth switch valve; One end of the first electrolyte delivery pipe is connected to the electrolyte supply source, the other end of the first electrolyte delivery pipe is connected to the first electrolyte inlet, and the eighth switch valve is arranged on the first electrolyte delivery pipe; One end of the second electrolyte delivery pipe is connected to the electrolyte supply source, the other end of the second electrolyte delivery pipe is connected to the second electrolyte inlet, and the ninth switch valve is arranged on the second electrolyte delivery pipe.

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