Battery formation negative pressure regulating valve and battery formation negative pressure control system

Abstract

The utility model discloses a battery formation negative pressure regulating valve and a battery formation negative pressure control system.The battery formation negative pressure regulating valve comprises a main valve body and a stepping motor, the main valve body is provided with an air inlet channel and an air outlet channel, a diaphragm is arranged in the main valve body and divides the interior of the main valve body into a first air cavity and a second air cavity, and the stepping motor is arranged in the first air cavity. The second air cavity is communicated with the air outlet channel, an adjusting screw rod is arranged in the first air cavity, the adjusting screw rod is in threaded connection with an adjusting nut, the periphery of the adjusting screw rod is sleeved with a first spring, the first spring is arranged between the adjusting nut and the membrane and acts on the membrane, and the membrane is connected with a needle valve rod; a circulation channel communicating the air inlet channel with the air outlet channel is further formed in the main valve body, and a sealing plate is arranged in the circulation channel and connected with the needle valve rod. And the stepping motor is in driving connection with the adjusting screw rod, so that the needle valve rod drives the sealing plate to plug or open the circulation channel. According to the technical scheme, air pressure can be adjusted in real time, and the automation degree is high.

Description

Technical Field

[0001] This utility model relates to the field of battery formation technology, and in particular to a battery formation negative pressure regulating valve and a battery formation negative pressure control system. Background Technology

[0002] From manufacturing to becoming a finished battery, lithium-ion batteries undergo a crucial activation process called formation. During formation, numerous chemical reactions produce electrolyte. It is essential to promptly remove the electrolyte generated during this process. Currently, a negative pressure regulating valve for battery formation is used, connected to the battery filling port via a suction nozzle to control the air pressure for vacuuming or breaking the vacuum, in order to extract or return the electrolyte.

[0003] Existing battery formation negative pressure regulating valves typically involve manually driving an adjusting screw, which in turn pushes down a diaphragm, causing a sealing plate to control the air pressure at the valve outlet. This manual adjustment of the air pressure by rotating a handwheel is cumbersome, has low automation, and is not very convenient. Utility Model Content

[0004] The main purpose of this invention is to propose a battery formation negative pressure regulating valve and a battery formation negative pressure control system, which aims to realize the electric control of the battery formation negative pressure regulating valve to regulate the output air pressure and improve the degree of automation.

[0005] To achieve the above objectives, the present invention proposes a battery formation negative pressure regulating valve, comprising:

[0006] The main valve body has an air inlet channel and an air outlet channel. A diaphragm is installed inside the main valve body, dividing its interior into a first air chamber and a second air chamber. The second air chamber is connected to the air outlet channel. An adjusting screw is installed in the first air chamber, and an adjusting nut is screwed onto the adjusting screw. A first spring is sleeved around the outer periphery of the adjusting screw, positioned between the adjusting nut and the diaphragm and acting on the diaphragm. A needle valve rod is connected to the diaphragm. The main valve body also has a flow channel connecting the air inlet channel and the air outlet channel. A sealing plate is installed within the flow channel, and the sealing plate is connected to the needle valve rod.

[0007] A stepper motor drives the adjusting screw. The rotation of the adjusting screw moves the adjusting nut, thereby adjusting the elastic force applied by the first spring to the diaphragm, which in turn causes the needle valve rod to drive the sealing plate to block or open the flow channel.

[0008] Furthermore, the main valve body has a pressure gauge interface extending through the inner wall of the air outlet channel, and the pressure gauge interface is used to connect a pressure gauge to detect air pressure.

[0009] Furthermore, the output shaft of the stepper motor is connected to the outer periphery of the adjusting screw by a coupling.

[0010] Furthermore, a sealing screw is screwed into the bottom opening of the flow channel of the main valve body, and a sealing ring is provided between the nut of the sealing screw and the main valve body.

[0011] Furthermore, the sealing screw has a protruding positioning post inside, and the positioning post has a positioning hole inside, and the bottom of the needle valve rod can extend into the positioning hole telescopically.

[0012] Furthermore, a needle valve sleeve is provided on the outer peripheral wall of the needle valve rod, and a second spring is provided on the outer peripheral of the positioning post. The second spring is located between the needle valve sleeve and the nut of the sealing screw.

[0013] Furthermore, the diaphragm is made of fluorinated rubber, and the sealing plate is also made of fluorinated rubber.

[0014] Furthermore, the main valve body is made of aluminum alloy, and the needle valve stem, the adjusting screw, and the adjusting nut are made of 304 stainless steel.

[0015] Furthermore, a mounting bracket is provided on the main valve body, which is used to fix the stepper motor.

[0016] This utility model also proposes a battery formation negative pressure control system, which includes a battery formation negative pressure regulating valve and a battery formation device. The battery formation device includes a manifold, multiple negative pressure cup assemblies, and multiple negative pressure nozzles. The negative pressure nozzles are used to connect to the battery injection port. Each negative pressure cup assembly is connected to the manifold, and the multiple negative pressure cup assemblies are connected one-to-one with the multiple negative pressure nozzles. The manifold is connected to the air outlet channel. The battery formation negative pressure regulating valve includes:

[0017] The main valve body has an air inlet channel and an air outlet channel. The air inlet channel is used to connect to an air source, and the air outlet channel is used to connect to a battery negative pressure control system. A diaphragm is provided inside the main valve body, dividing the interior of the main valve body into a first air chamber and a second air chamber. The second air chamber is connected to the air outlet channel. An adjusting screw is provided in the first air chamber, and an adjusting nut is screwed onto the adjusting screw. A first spring is sleeved on the outer periphery of the adjusting screw. The first spring is located between the adjusting nut and the diaphragm and acts on the diaphragm. The diaphragm is connected to a needle valve rod. The main valve body also has a flow channel inside that connects the air inlet channel and the air outlet channel. A sealing plate is provided in the flow channel, and the sealing plate is connected to the needle valve rod.

[0018] A stepper motor drives the adjusting screw. The rotation of the adjusting screw moves the adjusting nut, thereby adjusting the elastic force applied by the first spring to the diaphragm, which in turn causes the needle valve rod to drive the sealing plate to block or open the flow channel.

[0019] Compared with existing technologies, the working principle of this utility model is as follows: Initially, the main valve body is sealed, preventing airflow, resulting in zero air pressure at the outlet channel. When the stepper motor operates, the first spring applies a force to press down the diaphragm. Gas from the inlet channel enters the second air chamber through the flow channel, generating an upward thrust on the diaphragm. Eventually, when the air pressure in the second air chamber below the diaphragm matches the force of the first spring, a stable air pressure is achieved in the outlet channel. As the stepper motor continues to operate, the force of the first spring increases, and the air pressure at the outlet channel also increases. With this configuration, the battery-powered negative pressure regulating valve, relying on a control screw, balances the air pressure fluctuations in the outlet channel with the force of the first spring, maintaining a constant air pressure within a certain error range. This allows for real-time control and adjustment of the air pressure at the outlet channel, offering high automation and convenience. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the battery-forming negative pressure regulating valve of this utility model;

[0021] Figure 2 This is a cross-sectional view of the battery-forming negative pressure regulating valve of this utility model, excluding the stepper motor, main valve body, and mounting bracket.

[0022] Figure 3 This is an exploded view of the battery-generated negative pressure regulating valve of this utility model.

[0023] Reference numerals: 100, Main valve body; 110, Inlet passage; 120, Outlet passage; 200, Diaphragm; 210, Nylon gasket; 130, First air chamber; 140, Second air chamber; 300, Adjusting screw; 400, Adjusting nut; 500, First spring; 600, Needle valve stem; 150, Flow passage; 700, Sealing plate; 800, Stepper motor; 160, Pressure gauge interface; 900, Coupling; 151, Sealing screw; 152, Sealing ring; 153, Positioning pin; 154, Positioning hole; 610, Needle valve sleeve; 155, Second spring; 810, Mounting bracket. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1 to 3 This utility model proposes a battery-forming negative pressure regulating valve.

[0026] The battery formation negative pressure regulating valve includes a main valve body 100 and a stepper motor 800. The main valve body 100 has an air inlet channel 110 and an air outlet channel 120. A diaphragm 200 is disposed inside the main valve body 100, dividing the interior of the main valve body 100 into a first air chamber 130 and a second air chamber 140. The second air chamber 140 is connected to the air outlet channel 120. An adjusting screw 300 is disposed in the first air chamber 130, and an adjusting nut 400 is screwed onto the adjusting screw 300. A first spring 500 is sleeved on the outer periphery of the adjusting screw 300. The first spring 500 is located between the adjusting nut 400 and the diaphragm 800. The force between 00 and 00 acts on the diaphragm 200, which is connected to the needle valve rod 600. The main valve body 100 is also provided with a flow channel 150 that connects the air inlet channel 110 and the air outlet channel 120. A sealing plate 700 is provided in the flow channel 150, and the sealing plate 700 is connected to the needle valve rod 600. The stepper motor 800 drives the adjusting screw 300. The adjusting screw 300 rotates to move the adjusting nut 400, thereby adjusting the elastic force applied by the first spring 500 to the diaphragm 200, so that the needle valve rod 600 drives the sealing plate 700 to block or open the flow channel 150.

[0027] Specifically, the air intake channel 110 is used to connect to the air source, and the air outlet channel 120 is used to connect to the negative pressure cup of the battery negative pressure control system. The outer circumference of the adjusting screw 300 is provided with external threads, and the inner side of the adjusting nut 400 is provided with internal threads. The adjusting screw 300 and the adjusting nut 400 are connected by external and internal threads. The working principle of this battery formation negative pressure regulating valve is as follows: Initially, the main valve body 100 is in a sealed state, and airflow cannot pass through. Therefore, the air pressure at the outlet channel 120 is zero. When the stepper motor 800 is activated, the first spring 500 applies a force to the diaphragm 200 to press down. The gas at the inlet channel 110 enters the second air chamber 140 through the flow channel 150, generating an upward thrust on the diaphragm 200. Finally, when the air pressure in the second air chamber 140 below the diaphragm 200 is consistent with the force of the first spring 500, the outlet channel 120 can obtain a stable air pressure. When the stepper motor 800 continues to operate, the force of the first spring 500 increases, and the air pressure at the outlet channel 120 also increases accordingly. For example, when the elastic force of the first spring 500 is greater than the air pressure in the second air chamber 140, the diaphragm 200 drives the needle valve rod 600 to move downward, increasing the flow area between the needle valve rod 600 and the sealing plate 700, and increasing the air pressure in the second air chamber 140, thus bringing the diaphragm 200 to a balanced state. When the air pressure in the second air chamber 140 is greater than the elastic force of the first spring 500, the diaphragm 200 drives the needle valve rod 600 to move upward, decreasing the flow area between the needle valve rod 600 and the sealing plate 700, and decreasing the air pressure in the first air chamber 130, thus bringing the diaphragm 200 to a balanced state. Through the force balance of the diaphragm 200, the airflow area is automatically adjusted, and the depressurized and stable gas is output through the outlet channel 120, thereby achieving gas depressurization and stable output. With this configuration, the battery-powered negative pressure regulating valve relies on the control adjusting screw 300 to balance the air pressure fluctuation of the air outlet channel 120 with the elastic force of the first spring 500, so that the air pressure of the air outlet channel 120 remains constant within a certain error range. It can control and adjust the air pressure at the air outlet channel 120 in real time, with a high degree of automation and is convenient and fast.

[0028] Please see Figures 1 to 3 Furthermore, the main valve body 100 has a pressure gauge interface 160 extending through the inner wall of the air outlet channel 120. The pressure gauge interface 160 is used to connect a pressure gauge to detect air pressure. In this way, the pressure gauge interface 160 can connect a pressure gauge and detect the air pressure value at the air outlet channel 120, monitor the air pressure in real time, and then control the stepper motor 800 to drive the adjusting screw 300 to rotate via the main control board, set the corresponding stroke for the adjusting nut 400, adjust the spring of the first spring 500 on the diaphragm 200, and thus adjust the air pressure at the air outlet channel 120.

[0029] Please see Figures 1 to 3Furthermore, the output shaft of the stepper motor 800 is connected to the outer periphery of the adjusting screw 300 by a coupling 900. Specifically, the coupling 900 ensures that the output shaft of the stepper motor 800 and the adjusting screw 300 rotate together during motion transmission, preventing them from becoming detached and ensuring the stability of the stepper motor 800's power transmission to the adjusting screw 300.

[0030] Please see Figures 1 to 3 Furthermore, a sealing screw 151 is screwed into the bottom opening of the flow channel 150 of the main valve body 100, and a sealing ring 152 is provided between the nut of the sealing screw 151 and the main valve body 100. Specifically, the flow channel 150 at the bottom of the main valve body 100 is blocked and sealed by the sealing ring 152 between the sealing screw 151 and the main valve body 100, ensuring airtightness.

[0031] Please see Figures 1 to 2 Furthermore, the sealing screw 151 has a protruding positioning post 153 inside, and the positioning post 153 has a positioning hole 154 inside. The bottom of the needle valve rod 600 can extend into the positioning hole 154. In this way, during the movement of the diaphragm 200 driving the needle valve rod 600, the positioning hole 154 of the positioning post 153 on the sealing screw 151 can position the needle valve rod 600, so that the needle valve rod 600, the diaphragm 200, and the adjusting screw 300 can always move on the same axis.

[0032] Please see Figures 1 to 2 Furthermore, a needle valve sleeve 610 is provided on the outer peripheral wall of the needle valve rod 600, and a second spring 155 is sleeved on the outer periphery of the positioning post 153. The second spring 155 is located between the needle valve sleeve 610 and the nut of the sealing screw 151. In this way, the second spring 155 can provide a supporting and buffering effect when the needle valve rod 600 is pressed down, ensuring structural stability.

[0033] Furthermore, both the diaphragm 200 and the sealing plate 700 are made of fluorinated rubber. Specifically, fluorinated rubber possesses the property of preventing electrolyte corrosion. By using fluorinated rubber for both the diaphragm 200 and the sealing plate 700, the lack of electrolyte corrosion resistance in traditional pressure reducing valves can be improved, meeting the application scenarios in battery formation. Furthermore, a nylon gasket 210 can be added to the upper edge of the diaphragm 200 to ensure the airtightness of the first gas chamber 130 and the second gas chamber 140.

[0034] Furthermore, the main valve body 100 is made of aluminum alloy, while the needle valve stem 600, adjusting screw 300, and adjusting nut 400 are made of 304 stainless steel.

[0035] Please see Figures 1 to 3Furthermore, a mounting bracket 810 is provided on the main valve body 100 for fixing and mounting the stepper motor 800. Fixing the mounting bracket 810 on the main valve body 100 and mounting the stepper motor 800 through the mounting bracket 810 makes the overall structure of the battery-powered negative pressure regulating valve compact and improves space utilization.

[0036] This utility model also proposes a battery formation negative pressure control system, which includes a battery formation negative pressure regulating valve and a battery formation device. The battery formation device includes a manifold, multiple negative pressure cup assemblies, and multiple negative pressure nozzles. The negative pressure nozzles are used to connect to the battery injection port. Each negative pressure cup assembly is connected to the manifold, and the multiple negative pressure cup assemblies are connected one-to-one with the multiple negative pressure nozzles. The manifold is connected to the air outlet channel 120. The specific structure of the battery formation negative pressure regulating valve is as described in the above embodiments. Since this battery formation negative pressure regulating valve adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0037] The above are merely optional embodiments of this utility model and do not limit the patent scope of this utility model. All equivalent structural transformations made based on the contents of this utility model specification and drawings under the utility model concept, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A battery-generated negative pressure regulating valve, characterized in that, The battery-generated negative pressure regulating valve includes: The main valve body has an air inlet channel and an air outlet channel. A diaphragm is installed inside the main valve body, dividing its interior into a first air chamber and a second air chamber. The second air chamber is connected to the air outlet channel. An adjusting screw is installed in the first air chamber, and an adjusting nut is screwed onto the adjusting screw. A first spring is sleeved around the outer periphery of the adjusting screw, positioned between the adjusting nut and the diaphragm and acting on the diaphragm. A needle valve rod is connected to the diaphragm. The main valve body also has a flow channel connecting the air inlet channel and the air outlet channel. A sealing plate is installed within the flow channel, and the sealing plate is connected to the needle valve rod. A stepper motor drives the adjusting screw. The rotation of the adjusting screw moves the adjusting nut, thereby adjusting the elastic force applied by the first spring to the diaphragm, which in turn causes the needle valve rod to drive the sealing plate to block or open the flow channel.

2. The battery formation negative pressure regulating valve as described in claim 1, characterized in that, The main valve body has a pressure gauge interface through the inner wall of the air outlet channel, which is used to connect a pressure gauge to detect air pressure.

3. The battery formation negative pressure regulating valve as described in claim 1, characterized in that, The output shaft of the stepper motor is connected to the outer periphery of the adjusting screw by a coupling.

4. The battery formation negative pressure regulating valve as described in claim 1, characterized in that, A sealing screw is screwed into the bottom opening of the flow channel of the main valve body, and a sealing ring is provided between the nut of the sealing screw and the main valve body.

5. The battery formation negative pressure regulating valve as described in claim 4, characterized in that, The sealing screw has a protruding positioning post inside, and the positioning post has a positioning hole inside. The bottom of the needle valve rod can extend into the positioning hole.

6. The battery formation negative pressure regulating valve as described in claim 5, characterized in that, A needle valve sleeve is provided on the outer peripheral wall of the needle valve rod, and a second spring is provided on the outer peripheral of the positioning post. The second spring is located between the needle valve sleeve and the nut of the sealing screw.

7. The battery formation negative pressure regulating valve as described in claim 1, characterized in that, The diaphragm is made of fluorinated rubber, and the sealing plate is also made of fluorinated rubber.

8. The battery formation negative pressure regulating valve as described in claim 1, characterized in that, The main valve body is made of aluminum alloy, and the needle valve stem, the adjusting screw, and the adjusting nut are made of 304 stainless steel.

9. The battery formation negative pressure regulating valve as described in claim 1, characterized in that, The main valve body is provided with a mounting bracket, which is used to fix the stepper motor.

10. A battery formation negative pressure control system, characterized in that, The battery formation device includes a battery formation negative pressure regulating valve and a battery formation apparatus as described in any one of claims 1 to 9. The battery formation apparatus includes a manifold, a plurality of negative pressure cup assemblies and a plurality of negative pressure nozzles. The negative pressure nozzles are used to connect to the battery injection port. Each of the negative pressure cup assemblies is connected to the manifold. The plurality of negative pressure cup assemblies are connected one-to-one with the plurality of negative pressure nozzles. The manifold is connected to the air outlet channel.

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