Negative pressure formation system

Abstract

The utility model relates to a negative pressure formation system, and relates to the technical field of battery manufacturing, the negative pressure formation system comprises a negative pressure suction assembly, a buffer box and a plurality of partition plates, the negative pressure suction assembly is used for communicating with a liquid injection port of a battery; the cache box is provided with an input port and an output port, and the input port communicates with the negative pressure suction assembly; the multiple partition plates are distributed in the cache box at intervals, the multiple partition plates divide an inner cavity of the cache box into multiple layers of cache channels, one cache channel communicates with the input port, and the other cache channel communicates with the output port; the partition plate is provided with an air passing hole, and the two ends of the air passing hole communicate with the two adjacent cache channels correspondingly. In every two adjacent partition plates, the air passing hole of one partition plate and the air passing hole of the other partition plate are located in the two opposite ends respectively. According to the negative pressure formation system, the electrolyte and crystals thereof can be reserved in the buffer box, the electrolyte is prevented from polluting the output port, and the crystals of the electrolyte can be prevented from blocking the negative pressure pipeline.

Description

Technical Field

[0001] The present application relates to the technical field of battery manufacturing, and in particular to a negative pressure formation system. Background Art

[0002] Negative pressure formation systems are usually used in the manufacturing process of lithium batteries. Through the negative pressure formation process, the gas generation inside the battery can be controlled and absorbed, thereby ensuring the performance and safety of the battery. In related technologies, when the formation gas is extracted, the electrolyte is also extracted, which will pollute the gas output port, and after the electrolyte crystallizes, it will cause blockage of the negative pressure pipeline, thereby affecting the exhaust effect. Utility Model Content

[0003] In order to solve the above technical problems, an embodiment of the present application provides a negative pressure formation system, which can retain the electrolyte and its crystals in the buffer box, prevent the electrolyte from contaminating the output port and prevent the electrolyte crystals from clogging the negative pressure pipeline, thereby effectively ensuring continuous and efficient exhaust.

[0004] In a first aspect, a negative pressure formation system is provided, comprising:

[0005] A negative pressure suction component, used for connecting to the liquid injection port of the battery;

[0006] A cache box, provided with an input port and an output port, wherein the input port is connected to the negative pressure suction component;

[0007] A plurality of partitions, wherein the plurality of partitions are spaced apart in the cache box, and the plurality of partitions divide the inner cavity of the cache box into multiple layers of cache channels, wherein one of the cache channels is connected to the input port, and another of the cache channels is connected to the output port;

[0008] Among them, the partition is provided with an air hole, and the two ends of the air hole are respectively connected to the two adjacent cache channels; in the two adjacent partitions, the air hole of one of the partitions and the air hole of the other partition are respectively located at opposite ends.

[0009] According to the first aspect of the present application, the cache box includes a bottom plate, the input port is arranged on the bottom plate, and each of the partitions is arranged to be inclined relative to the bottom plate.

[0010] According to the first aspect of the present application, the inclination directions of two adjacent partitions are opposite.

[0011] According to the first aspect of the present application, the negative pressure formation system further comprises:

[0012] A bent pipe is located in the cache channel; one end of the bent pipe is connected to the air hole or the input port, and the other end of the bent pipe is bent toward the input port.

[0013] According to the first aspect of the present application, the cache box is further provided with an infusion port, and the infusion port is communicated with the cache channel;

[0014] The negative pressure formation system also includes:

[0015] liquid storage tank;

[0016] An infusion pipeline, one end of which is connected to the infusion port, and the other end of which is connected to the liquid storage tank.

[0017] According to the first aspect of the present application, the negative pressure suction component comprises:

[0018] A negative pressure nozzle, one end of which is used to communicate with the liquid injection port;

[0019] A negative pressure cup, one end of the negative pressure cup is connected to the other end of the negative pressure suction nozzle, and the other end of the negative pressure cup is connected to the input port.

[0020] According to the first aspect of the present application, there are multiple input ports, there are multiple negative pressure cups, the multiple input ports are all connected to the cache channel, and the multiple negative pressure cups are connected to the multiple input ports in a one-to-one correspondence.

[0021] According to the first aspect of the present application, the negative pressure suction component further includes:

[0022] A connector, two ends of which are respectively connected to the negative pressure nozzle and the negative pressure cup;

[0023] The negative pressure formation system also includes:

[0024] The negative pressure cup is installed on the forming needle bed, the forming needle bed is provided with a limiting hole, and the joint cooperates with the limiting hole.

[0025] According to a first aspect of the present application, the cache box includes a first side plate and a second side plate that are arranged opposite to each other, a plurality of first overlapping blocks that are stacked and distributed are provided on the inner side of the first side plate, a plurality of second overlapping blocks that are stacked and distributed are provided on the inner side of the second side plate, and the plurality of first overlapping blocks correspond to the plurality of second overlapping blocks one by one;

[0026] Wherein, the partition is overlapped on the first overlapping block and the second overlapping block corresponding to each other.

[0027] According to the first aspect of the present application, the first overlapping blocks and the second overlapping blocks corresponding to each other are arranged at horizontal positions of different heights so that the overlapping partitions are arranged inclined.

[0028] According to the first aspect of the present application, the negative pressure formation system further comprises:

[0029] Negative pressure control system;

[0030] A negative pressure pipeline, one end of which is connected to the output port, and the other end of which is connected to the negative pressure control system.

[0031] The negative pressure formation system provided in the embodiment of the present application includes a negative pressure suction component, a cache box and multiple partitions, the negative pressure suction component is used to connect the liquid filling port of the battery; the cache box is provided with an input port and an output port, the input port is connected to the negative pressure suction component; multiple partitions are spaced apart in the cache box, and the multiple partitions divide the inner cavity of the cache box into multiple layers of cache channels, one of which is connected to the input port, and the other is connected to the output port. In two adjacent partitions, the air holes of one partition and the air holes of the other partition are respectively located at opposite ends, so that the flow path and flow time of the gas between the two adjacent cache channels can be extended. During the flow of the gas in the multiple cache channels, the electrolyte and its crystals carried by the gas will gradually separate from the gas and remain in the cache channels, thereby preventing the electrolyte from contaminating the output port, and also preventing the electrolyte crystals from clogging the negative pressure pipeline, effectively improving the problem of poor exhaust effect and ensuring continuous and efficient exhaust. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0033] Figure 1 A schematic structural diagram of a negative pressure formation system provided for an exemplary embodiment of the present application.

[0034] Figure 2 A schematic diagram of the structure of a cache box provided for an exemplary embodiment of the present application.

[0035] Figure 3 A schematic structural diagram of a negative pressure suction assembly, a formation needle bed, and a battery provided as an exemplary embodiment of the present application.

[0036] Figure numerals: 100-negative pressure formation system; 110-negative pressure suction component; 111-negative pressure nozzle; 112-negative pressure cup; 113-connector; 120-cache box; 121-input port; 122-output port; 123-bottom plate; 124-infusion port; 125-first side plate; 126-second side plate; 127-first overlap block; 128-second overlap block; 130-partition; 131-air hole; 140-cache channel; 150-bend pipe; 170-liquid storage box; 180-infusion pipeline; 190-forming needle bed; 191-limiting hole; 200-negative pressure control system; 210-negative pressure pipeline; 300-battery; 310-liquid injection port; 400-station to be formed. DETAILED DESCRIPTION

[0037] Below, the exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the exemplary embodiments described here.

[0038] Figure 1 A schematic structural diagram of a negative pressure formation system provided for an exemplary embodiment of the present application. Figure 2 This is a schematic diagram of the structure of a cache box provided by an exemplary embodiment of the present application. Figure 1 and Figure 2 As shown, the negative pressure formation system 100 provided in the embodiment of the present application may include a negative pressure suction component 110 and a buffer box 120. The negative pressure suction component 110 is connected to the injection port 310 of the battery 300. The buffer box 120 is provided with an input port 121 and an output port 122. The input port 121 is connected to the negative pressure suction component 110. In actual application, the negative pressure suction component 110 absorbs the gas generated inside the battery 300, and the absorbed gas and the mixed electrolyte enter the buffer box 120 through the input port 121, and then output the buffer box 120 from the output port 122.

[0039] like Figure 1 and Figure 2 As shown, the negative pressure formation system 100 may further include a negative pressure control system 200 and a negative pressure pipeline 210, one end of the negative pressure pipeline 210 is connected to the output port 122, and the other end of the negative pressure pipeline 210 is connected to the negative pressure control system 200. In practical applications, the negative pressure control system 200 can perform a vacuum operation on the battery 300 through the negative pressure pipeline 210, and the battery 300 is internally formed to generate gas, and the gas and the mixed electrolyte enter the buffer box 120.

[0040] like Figure 1 and Figure 2As shown, the negative pressure formation system 100 may also include a plurality of partitions 130, which are spaced apart in the cache box 120, and the plurality of partitions 130 divide the inner cavity of the cache box 120 into a plurality of cache channels 140, wherein one cache channel 140 is connected to the input port 121, and another cache channel 140 is connected to the output port 122, and the partition 130 is provided with an air hole 131, and the two ends of the air hole 131 are respectively connected to two adjacent cache channels 140.

[0041] Specifically, after the gas absorbed by the negative pressure suction component 110 enters one of the cache channels 140 through the input port 121, it diffuses along the cache channel 140, and then diffuses to the adjacent cache channel 140 through the air hole 131 of the partition 130. By analogy, after the gas passes through the multi-layer cache channel 140, it is output from the cache box 120 from the output port 122. It should be understood that during the flow of the gas in the multi-layer cache channel 140, the electrolyte and its crystals carried by the gas will gradually separate from the gas and remain in the cache channel 140. In this way, the electrolyte can be prevented from contaminating the output port 122, and the electrolyte crystals can also be prevented from clogging the negative pressure pipeline 210, which effectively improves the problem of poor exhaust effect and ensures continuous and efficient exhaust.

[0042] like Figure 2 As shown, in two adjacent partitions 130, the air holes 131 of one partition 130 and the air holes 131 of the other partition 130 are respectively located at opposite ends. In this way, the flow path and flow time of the gas between the two adjacent cache channels 140 can be extended, so that the electrolyte and its crystals can be more completely separated from the gas and remain in the cache box 120, thereby further improving the problem of electrolyte contamination of the output port 122 and electrolyte crystals blocking the negative pressure pipe 210, and further improving the exhaust efficiency.

[0043] It should be noted that the cache box 120 is Figure 2 Taking the state shown as an example, the cache channel 140 of the bottom layer is connected to the input port 121, and the cache channel 140 of the top layer is connected to the output port 122. The number of the intermediate cache channels 140 can be set according to actual conditions. In this way, it can be ensured that the gas first enters the cache channel 140 of the bottom layer through the input port 121, and then passes through the middle multi-layer cache channels 140, and then enters the cache channel 140 of the top layer, and then is output from the output port 122, which effectively prolongs the circulation time of the gas in the cache box 120, making it easier for the electrolyte and its crystals to be separated from the gas and remain in the cache box 120.

[0044] like Figure 1 and Figure 2As shown, the cache box 120 is also provided with an infusion port 124, which is connected to the cache channel 140. After the electrolyte and its mixed crystals fall into the cache channel 140, they can be output from the cache box 120 through the infusion port 124, so as to facilitate timely cleaning of the electrolyte and its crystals in the cache box 120.

[0045] like Figure 1 and Figure 2 As shown, the negative pressure formation system 100 may further include a liquid storage tank 170 and a liquid infusion pipe 180, one end of the liquid infusion pipe 180 is connected to the liquid infusion port 124, and the other end of the liquid infusion pipe 180 is connected to the liquid storage tank 170. It should be understood that the electrolyte and its crystals in the cache channel 140 can flow into the liquid infusion pipe 180 through the liquid infusion port 124, and then enter the liquid storage tank 170 through the liquid infusion pipe 180. The liquid storage tank 170 can be used to store the electrolyte, which is convenient for subsequent centralized processing of the electrolyte, and at the same time, it can prevent the separated electrolyte from flowing back into the battery 300 to avoid contaminating the battery 300.

[0046] In one embodiment, the buffer box 120 may be made of a transparent plastic material, which makes it easier for staff to check the flow of the electrolyte on the partition 130.

[0047] In one embodiment, the partition 130 may be made of a plastic material, which is light in weight, low in manufacturing cost, and has a low friction coefficient, which is conducive to guiding the rapid flow of the electrolyte and improving the recovery efficiency of the electrolyte.

[0048] like Figure 2 As shown, the cache box 120 includes a bottom plate 123, and the input port 121 is arranged on the bottom plate 123. Each partition 130 is inclined relative to the bottom plate 123. In this way, when the electrolyte falls on the partition 130, the partition 130 can guide the electrolyte to move along the inclined direction of the partition 130, thereby facilitating the subsequent electrolyte to flow to the aforementioned infusion port 124, thereby facilitating the recovery of the electrolyte.

[0049] In one embodiment, the inclination angle of the partition 130 relative to the bottom plate 123 can be selected within the range of 5-30°, for example, the inclination angle can be 5°, 20°, 30°, etc.

[0050] It should be noted that the inclination directions of two adjacent partitions 130 are opposite. In this way, for two adjacent partitions 130, the electrolyte flows from the high end of the upper partition 130 to the low end, then falls on the high end of the lower partition 130, and then flows from the high end to the low end of the lower partition 130. The electrolyte on multiple partitions 130 can gradually gather and finally flow to the infusion port 124, so as to facilitate the centralized recovery of electrolyte in the liquid storage tank 170.

[0051] It should be understood that in Figure 2In the state shown, the infusion port 124 is connected to the bottom cache channel 140, and the electrolyte left from the upper cache channel 140 can fall into the bottom cache channel 140 and then be output from the infusion port 124. In this way, the electrolyte in the cache box 120 can be recovered more thoroughly, reducing the residual amount of electrolyte in the cache box 120.

[0052] like Figure 2 As shown, the cache box 120 includes a first side plate 125 and a second side plate 126 that are relatively arranged. The inner side of the first side plate 125 is provided with a plurality of stacked first overlap blocks 127, and the inner side of the second side plate 126 is provided with a plurality of stacked second overlap blocks 128. The plurality of first overlap blocks 127 correspond one-to-one to the plurality of second overlap blocks 128.

[0053] It should be noted that the partition 130 is overlapped on the corresponding first overlap block 127 and the second overlap block 128. In this way, not only can the partition 130 separate the inner cavity of the cache box 120 into the cache channel 140, but also the installation and removal of the partition 130 are convenient.

[0054] In one embodiment, each set of corresponding first overlapping blocks 127 and second overlapping blocks 128 is overlapped with a partition plate 130 .

[0055] In one embodiment, the corresponding first overlapping blocks 127 and the second overlapping blocks 128 are arranged at horizontal positions of different heights, so that the partition 130 overlapped on the corresponding first overlapping blocks 127 and the second overlapping blocks 128 can be conveniently arranged at an angle, with a simple structure and easy installation.

[0056] like Figure 2 As shown, the negative pressure formation system 100 may further include a bend 150, which is located in the buffer channel 140, and one end of the bend 150 is connected to the air hole 131 or the input port 121. Specifically, if the bend 150 is located in the buffer channel 140 at the bottom layer, one end of the bend 150 is connected to the input port 121; if the bend 150 is located in the buffer channel 140 other than the bottom layer, one end of the bend 150 is connected to the air hole 131. In addition, the other end of the bend 150 is bent toward the direction of the input port 121 (i.e. Figure 2 In the state shown, the other end of the curved pipe 150 is arranged downward. In this way, after the gas passes through the curved pipe 150, it will diffuse downward, which is conducive to the electrolyte in the gas falling on the partition 130 under the action of gravity, and can effectively improve the efficiency of separating the electrolyte from the gas.

[0057] Figure 3 A schematic diagram of the structure of a negative pressure suction assembly, a formation needle bed and a battery provided by an exemplary embodiment of the present application. Figure 3As shown, the negative pressure suction component 110 can also include a negative pressure suction nozzle 111 and a negative pressure cup 112, one end of the negative pressure suction nozzle 111 is connected to the liquid filling port 310 of the battery 300, one end of the negative pressure cup 112 is connected to the other end of the negative pressure suction nozzle 111, and the other end of the negative pressure cup 112 is connected to the input port 121.

[0058] In actual applications, the gas and liquid drawn out from the filling port 310 of the battery 300 by the negative pressure nozzle 111 can enter the negative pressure cup 112. The negative pressure cup 112 can be used to store the electrolyte mixed in the gas and perform initial separation of the electrolyte in the gas. In this way, part of the electrolyte can be retained in the negative pressure cup 112, thereby reducing the amount of electrolyte entering the cache box 120.

[0059] It should be understood that the negative pressure cup 112 and the buffer box 120 can perform double interception of the electrolyte, which has a better interception effect and prevents the electrolyte from entering the negative pressure pipe 210 through the output port 122.

[0060] In one embodiment, the negative pressure cup 112 may be made of a transparent plastic material to facilitate observation of the internal storage conditions.

[0061] like Figure 3 As shown, there are multiple input ports 121 and multiple negative pressure cups 112 . The multiple input ports 121 are all connected to the cache channel 140 , and the multiple negative pressure cups 112 are connected to the multiple input ports 121 in a one-to-one correspondence.

[0062] It should be understood that the multiple negative pressure nozzles 111 corresponding to the multiple negative pressure cups 112 can all be used to extract gas from the battery 300, thereby improving the gas extraction efficiency; in addition, the multiple input ports 121 can all be used to supply gas into the cache box 120, thereby improving the gas discharge efficiency.

[0063] like Figure 3 As shown, the negative pressure suction assembly 110 may further include a connector 113, the two ends of which are respectively connected to the negative pressure suction nozzle 111 and the negative pressure cup 112; correspondingly, the negative pressure formation system 100 may further include a formation needle bed 190, the negative pressure cup 112 is installed on the formation needle bed 190, the formation needle bed 190 is provided with a limiting hole 191, and the connector 113 cooperates with the limiting hole 191.

[0064] It should be understood that the formation needle bed 190 can be used as an installation carrier for the negative pressure cup 112, and its limiting hole 191 can limit the connector 113, thereby improving the stability of the connector 113 during gas delivery, so that the negative pressure cup 112 can continuously and stably separate and store the electrolyte.

[0065] like Figure 3As shown, the negative pressure formation system 100 may further include a formation station 400, which is provided with a card slot, and the battery 300 is carded in the card slot to fix the battery 300 and ensure that the battery 300 is in a stable state during the formation process.

[0066] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0067] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0068] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0069] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0070] The above description has been given for the purpose of illustration and description. This description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A negative pressure formation system, characterized in that: include: A negative pressure suction component (110) used for connecting to a liquid injection port (310) of a battery (300); A cache box (120) is provided with an input port (121) and an output port (122), wherein the input port (121) is in communication with the negative pressure suction component (110); A plurality of partitions (130), wherein the plurality of partitions (130) are spaced apart in the cache box (120), and the plurality of partitions (130) divide the inner cavity of the cache box (120) into multiple layers of cache channels (140), wherein one of the cache channels (140) is connected to the input port (121), and another of the cache channels (140) is connected to the output port (122); The partition (130) is provided with an air hole (131), and the two ends of the air hole (131) are respectively connected to the two adjacent cache channels (140); in the two adjacent partitions (130), the air hole (131) of one of the partitions (130) and the air hole (131) of the other partition (130) are respectively located at opposite ends.

2. The negative pressure formation system according to claim 1, characterized in that: The cache box (120) comprises a bottom plate (123), the input port (121) is arranged on the bottom plate (123), and each of the partitions (130) is arranged to be inclined relative to the bottom plate (123).

3. The negative pressure formation system according to claim 2, characterized in that: The inclination directions of two adjacent partitions (130) are opposite.

4. The negative pressure formation system according to any one of claims 1 to 3, characterized in that: The negative pressure formation system also includes: A curved pipe (150) is located in the cache channel (140); one end of the curved pipe (150) is connected to the air hole (131) or the input port (121), and the other end of the curved pipe (150) is bent in the direction of the input port (121).

5. The negative pressure formation system according to any one of claims 1 to 3, characterized in that: The cache box (120) is also provided with an infusion port (124), and the infusion port (124) is in communication with the cache channel (140); The negative pressure formation system also includes: Liquid storage tank(170); An infusion pipeline (180), one end of which is in communication with the infusion port (124), and the other end of which is in communication with the liquid storage tank (170).

6. The negative pressure formation system according to any one of claims 1 to 3, characterized in that: The negative pressure suction component (110) comprises: A negative pressure suction nozzle (111), one end of the negative pressure suction nozzle (111) being used for connecting to the liquid injection port (310); A negative pressure cup (112), one end of the negative pressure cup (112) is connected to the other end of the negative pressure suction nozzle (111), and the other end of the negative pressure cup (112) is connected to the input port (121).

7. The negative pressure formation system according to claim 6, characterized in that: There are multiple input ports (121), there are multiple negative pressure cups (112), the multiple input ports (121) are all connected to the cache channel (140), and the multiple negative pressure cups (112) are connected to the multiple input ports (121) in a one-to-one correspondence.

8. The negative pressure formation system according to claim 6, characterized in that: The negative pressure suction component (110) further comprises: A joint (113), two ends of the joint (113) being respectively connected to the negative pressure nozzle (111) and the negative pressure cup (112); The negative pressure formation system also includes: A forming needle bed (190), the negative pressure cup (112) is installed on the forming needle bed (190), the forming needle bed (190) is provided with a limiting hole (191), and the joint (113) cooperates with the limiting hole (191).

9. The negative pressure formation system according to any one of claims 1 to 3, characterized in that: The cache box (120) comprises a first side plate (125) and a second side plate (126) which are arranged opposite to each other, a plurality of first overlapping blocks (127) which are stacked and distributed are arranged on the inner side of the first side plate (125), and a plurality of second overlapping blocks (128) which are stacked and distributed are arranged on the inner side of the second side plate (126), and the plurality of first overlapping blocks (127) correspond to the plurality of second overlapping blocks (128) one by one; Wherein, the partition plate (130) is overlapped on the first overlap block (127) and the second overlap block (128) which correspond to each other.

10. The negative pressure formation system according to claim 9, characterized in that: The first overlapping blocks (127) and the second overlapping blocks (128) corresponding to each other are arranged at horizontal positions of different heights so that the overlapping partitions (130) are arranged at an inclination.

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