Simplified lithium battery formation negative pressure control system

Abstract

The utility model discloses a simplified lithium battery formation negative pressure control system, which relates to the technical field of lithium battery manufacturing automation line equipment, and comprises an air duplex piece, one end of the air duplex piece is provided with an integrated electric vacuum proportional valve, one side of the integrated electric vacuum proportional valve is provided with a gas-liquid separator, and the other side of the integrated electric vacuum proportional valve is provided with a gas-liquid separator. A plurality of drying rooms are arranged at one end of the gas-liquid separator; the other end of the air duplex piece is connected with a compressed air source, a vacuum source is arranged on the outer side of the integrated electric vacuum proportional valve, and a positive pressure inlet connected with the air duplex piece and a negative pressure inlet connected with the vacuum source are formed in one side of the integrated electric vacuum proportional valve. The whole negative pressure system is simplified, a plurality of valves of an original negative pressure system are simplified into an integrated valve, connection of connectors and pipelines is simplified, control is simplified, installation and maintenance are simplified, air tightness is better guaranteed, installation space is reduced, and cost is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of automated production line equipment for lithium batteries, and more specifically, to a simplified negative pressure control system for lithium battery formation. Background Technology

[0002] With the development of new energy technologies, lithium batteries are being used more and more widely in electric equipment. During the lithium battery formation process, gas is generated, which needs to be removed using negative pressure technology. Negative pressure formation is a key step in the lithium battery production process.

[0003] Traditional lithium battery formation negative pressure control systems use electro-proportional valves to control pressure reducing valves to regulate negative pressure, solenoid valves to control pneumatic two-way valves to achieve pressure holding and on / off, and electric two-way control valves to achieve pressure release. As a result, existing negative pressure systems have more than five control valves, many joints, long and complex pipeline connections, which can easily lead to blockages and poor airtightness. In addition, they occupy a lot of space, are difficult to install, and have complex control and high costs.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes a simplified negative pressure control system for lithium battery formation to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] A simplified negative pressure control system for lithium battery formation includes an air coupling unit. One end of the air coupling unit is equipped with an integrated electric vacuum proportional valve. A gas-liquid separator is installed on one side of the integrated electric vacuum proportional valve. A plurality of drying chambers are installed at one end of the gas-liquid separator. The other end of the air coupling unit is connected to a compressed air source. A vacuum source is installed on the outside of the integrated electric vacuum proportional valve.

[0008] Furthermore, in order to connect the integrated electric vacuum proportional valve with the air dual unit and the vacuum source, one side of the integrated electric vacuum proportional valve is provided with a positive pressure inlet connected to the air dual unit and a negative pressure inlet connected to the vacuum source; one end of the integrated electric vacuum proportional valve is provided with several electrical interfaces, and the other side of the integrated electric vacuum proportional valve is provided with a negative pressure outlet connected to the gas-liquid separator, with two sets of electrical interfaces.

[0009] Furthermore, in order to adjust the positive pressure provided by the positive pressure inlet to adjust the required negative pressure given by the piston based on the pressure value displayed by the digital pressure gauge, the integrated electric vacuum proportional valve is equipped with a digital pressure gauge that matches the negative pressure outlet; the vacuum negative pressure adjustment range of the integrated electric vacuum proportional valve is -0 to -101 kPa.

[0010] Furthermore, in order to process multiple lithium batteries simultaneously and thus improve the overall efficiency of the production line, the vacuum suction cups can provide a uniform and controllable negative pressure environment, ensuring the stability of the negative pressure system. The drying chamber is equipped with several lithium battery vacuum suction cups, and the lithium battery vacuum suction cups are connected to the gas-liquid separator through pipes.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. This utility model simplifies the entire negative pressure system, transforms the multiple valves of the original negative pressure system into an integrated valve, simplifies joints and pipeline connections, simplifies control, simplifies installation and maintenance, better ensures airtightness, reduces installation space, and lowers costs.

[0013] 2. By setting an integrated electric vacuum proportional valve, it can replace the traditional electric proportional valve, pressure reducing valve, pneumatic control valve and vacuum breaking valve, so as to simplify the entire negative pressure control system. The digital display pressure gauge can monitor and adjust the pressure value and the pressure holding pressure value in real time. The positive pressure provided by the positive pressure inlet can be adjusted according to the pressure value displayed by the digital display pressure gauge to adjust the required negative pressure given by the piston.

[0014] 3. By setting up a lithium battery vacuum chuck, multiple lithium batteries can be processed simultaneously, thereby improving the overall efficiency of the production line. The vacuum chuck can provide a uniform and controllable negative pressure environment, ensuring the stability of the negative pressure system. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a simplified structural diagram of a lithium battery formation negative pressure control system according to an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the structure of an integrated electric vacuum proportional valve in a simplified lithium battery formation negative pressure control system according to an embodiment of the present invention.

[0018] In the picture:

[0019] 1. Air unit; 2. Integrated electric vacuum proportional valve; 201. Positive pressure inlet; 202. Negative pressure inlet; 203. Electrical interface; 204. Negative pressure outlet; 205. Digital pressure gauge; 3. Gas-liquid separator; 4. Drying chamber; 401. Lithium battery vacuum suction cup; 5. Compressed air source; 6. Vacuum source. Detailed Implementation

[0020] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0021] According to an embodiment of the present invention, a simplified lithium battery formation negative pressure control system is provided.

[0022] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figures 1-2 As shown, the simplified lithium battery formation negative pressure control system according to an embodiment of the present invention includes an air dual unit 1. One end of the air dual unit 1 is provided with an integrated electric vacuum proportional valve 2. A gas-liquid separator 3 is provided on one side of the integrated electric vacuum proportional valve 2. A plurality of drying chambers 4 are provided at one end of the gas-liquid separator 3. The other end of the air dual unit 1 is connected to a compressed air source 5. A vacuum source 6 is provided on the outside of the integrated electric vacuum proportional valve 2.

[0023] In addition, it should be noted that the compressed air source 5 is connected to the air assembly 1 via a pipeline to deliver compressed air.

[0024] By utilizing the above-mentioned technical solution of this utility model, this utility model simplifies the entire negative pressure system, reduces the multiple valves of the original negative pressure system into an integrated valve, simplifies joints and pipeline connections, simplifies control, simplifies installation and maintenance, better ensures airtightness, reduces installation space, and lowers costs.

[0025] In one embodiment, the integrated electro-vacuum proportional valve 2 has a positive pressure inlet 201 connected to the air dual unit 1 and a negative pressure inlet 202 connected to the vacuum source 6 on one side; a plurality of electrical interfaces 203 are provided at one end of the integrated electro-vacuum proportional valve 2, and a negative pressure outlet 204 connected to the gas-liquid separator 3 is provided on the other side; a digital pressure gauge 205 that cooperates with the negative pressure outlet 204 is provided inside the integrated electro-vacuum proportional valve 2; the vacuum negative pressure adjustment range of the integrated electro-vacuum proportional valve 2 is -0 to -101 kPa; the number of electrical interfaces 203 is set to two sets, which can replace the traditional electro-proportional valve, pressure reducing valve, pneumatic control valve and vacuum breaking valve, so as to simplify the entire negative pressure control system. The digital pressure gauge 205 can monitor and adjust the pressure value and the holding pressure value in real time. The positive pressure provided by the positive pressure inlet 201 can be adjusted according to the pressure value displayed by the digital pressure gauge 205 to adjust the required negative pressure given by the piston.

[0026] Furthermore, it should be noted that the number of electrical interfaces 203 is set to two sets. One electrical interface 203 inputs a digital signal for the required negative pressure value through the PLC. The integrated electric vacuum proportional valve 2 can then adjust the piston to provide the required negative pressure based on the pressure value displayed by the built-in digital pressure gauge 205 and the positive pressure provided by the positive pressure inlet 201. The adjustment range is -0 to -101 kPa. When pressure maintenance is required, a shut-off signal is sent through the other electrical interface 203 to the two-way valve embedded in the integrated electric vacuum proportional valve 2 behind the negative pressure inlet 202 to cut off the negative pressure system from the negative pressure source. The sealed space between the integrated electric vacuum proportional valve 2 and the vacuum suction cup 401 maintains the previously set negative pressure value. When a slight negative pressure adjustment is required, the pressure of the integrated electric vacuum proportional valve 2 is adjusted to the slight negative pressure value. When pressure relief is required, the pressure of the integrated electric vacuum proportional valve 2 is adjusted to 0 kPa.

[0027] In addition, the integrated electric vacuum proportional valve 2 also has the functions of on / off pressure holding and pressure relief to break the vacuum. On / off pressure holding is achieved by directly closing and opening the two-way valve embedded in the front of the integrated electric vacuum proportional valve 2, which is connected to the negative pressure channel. Pressure relief to break the vacuum is achieved by directly adjusting the pressure to 0 kPa through the integrated electric vacuum proportional valve 2. The integrated electric vacuum proportional valve 2 has a micro-leak overflow port interface on the outside, which can be connected to the outside atmosphere of the valve body for pressure relief.

[0028] In one embodiment, the drying chamber 4 is equipped with several vacuum suction cups 401 inside, and the vacuum suction cups 401 are connected to the gas-liquid separator 3 through pipes, thereby enabling the simultaneous processing of multiple lithium batteries, which improves the overall efficiency of the production line. The vacuum suction cups can provide a uniform and controllable negative pressure environment, ensuring the stability of the negative pressure system.

[0029] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0030] In practical applications, when adjusting the pressure, the vacuum suction cup 401 is first pressed onto the corresponding pressure plate or workpiece (lithium battery). The compressed air source 5 outputs compressed air through the air coupler 1 and connects to the integrated electric vacuum proportional valve 2. When the integrated electric vacuum proportional valve 2 receives an electrical signal, which can be an analog signal or a 485 communication signal, it adjusts the opening of the negative pressure valve on the negative pressure outlet 204 pipeline according to the signal and adjusts the pressure feedback displayed by the digital pressure gauge 205 to achieve a pressure range of 0 to -101 kPa, adjusting to the pressure value of the vacuum lock set.

[0031] When pressure maintenance is required, a shut-off signal is sent through one of the electrical interfaces 203 to the two-way valve embedded in the integrated electric vacuum proportional valve 2 behind the negative pressure inlet 202 to cut off the negative pressure system from the negative pressure source. The sealed space from the integrated electric vacuum proportional valve 2 to the vacuum suction cup 401 maintains the previously set negative pressure value. When a slight negative pressure adjustment is required, the pressure of the integrated electric vacuum proportional valve 2 can be adjusted to the slight negative pressure value. When pressure relief is required, the pressure of the integrated electric vacuum proportional valve 2 can be adjusted to 0 kPa.

[0032] In summary, by utilizing the above-mentioned technical solution of this utility model, the entire negative pressure system is simplified, and the multiple valves of the original negative pressure system are simplified into an integrated valve. This simplifies joints and pipeline connections, control, installation, and maintenance, better ensuring airtightness, reducing installation space, and lowering costs. By setting an integrated electric vacuum proportional valve 2, traditional electric proportional valves, pressure reducing valves, pneumatic control valves, and vacuum breaking valves can be replaced, thereby simplifying the entire negative pressure control system. The digital pressure gauge 205 can monitor and adjust the pressure and holding pressure values ​​in real time. The positive pressure provided by the positive pressure inlet 201 can be adjusted based on the pressure value displayed by the digital pressure gauge 205 to regulate the required negative pressure from the piston. By setting a vacuum suction cup 401, multiple lithium batteries can be processed simultaneously, thereby improving the overall efficiency of the production line. The vacuum suction cup provides a uniform and controllable negative pressure environment, ensuring the stability of the negative pressure system.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A simplified negative pressure control system for lithium battery formation, characterized in that, It includes an air dual unit (1), one end of which is provided with an integrated electric vacuum proportional valve (2), one side of which is provided with a gas-liquid separator (3), and one end of which is provided with several drying chambers (4). The other end of the air dual unit (1) is connected to a compressed air source (5), and a vacuum source (6) is provided on the outside of the integrated electric vacuum proportional valve (2).

2. The simplified lithium battery formation negative pressure control system according to claim 1, characterized in that, The integrated electric vacuum proportional valve (2) has a positive pressure inlet (201) connected to the air dual unit (1) and a negative pressure inlet (202) connected to the vacuum source (6) on one side; One end of the integrated electric vacuum proportional valve (2) is provided with several electrical interfaces (203), and the other side of the integrated electric vacuum proportional valve (2) is provided with a negative pressure outlet (204) connected to the gas-liquid separator (3).

3. A simplified lithium battery formation negative pressure control system according to claim 2, characterized in that, The integrated electric vacuum proportional valve (2) is equipped with a digital pressure gauge (205) that is compatible with the negative pressure outlet (204).

4. A simplified lithium battery formation negative pressure control system according to claim 2, characterized in that, The vacuum negative pressure adjustment range of the integrated electric vacuum proportional valve (2) is -0 to -101 kPa.

5. A simplified lithium battery formation negative pressure control system according to claim 2, characterized in that, The number of electrical interfaces (203) is set to two sets.

6. A simplified lithium battery formation negative pressure control system according to claim 1, characterized in that, The drying chamber (4) is equipped with several lithium battery vacuum suction cups (401), and the lithium battery vacuum suction cups (401) are connected to the gas-liquid separator (3) through pipes.

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