Acid pot filling valve and acid pot for battery acid addition

Abstract

The present invention discloses an acid pot filling valve for battery acid addition, aiming to provide an acid pot filling valve and an acid pot for battery acid addition. The valve enables simultaneous acid addition to multiple batteries according to the number of batteries in the charging and forming process, thereby ensuring consistency in acid addition time, thereby ensuring consistency in the acid soaking time of each battery from the completion of acid addition to the start of formation charging in the charging and forming process. The valve comprises a valve seat, the valve seat being provided with a valve hole extending vertically therethrough, the valve hole being open at both ends, the upper end of the valve seat being provided with an upper sealing connection structure for cooperating with the acid pot, and the lower end of the valve seat being provided with a lower sealing connection structure for cooperating with the acid injection nozzle of the battery; a sealing ring disposed on the inner wall of the valve hole; and a sealing ball, the sealing ball being supported on the sealing ring under its own weight and being in sealing contact with the sealing ring.

Description

Technical Field

[0001] The invention relates to the field of battery acidification, and in particular to an acid pot filling valve and an acid pot for battery acidification. Background Art

[0002] During the battery manufacturing process, the semi-finished batteries with assembled green plates are not charged and need to be acidified (electrolyte added) and charged to activate the active substances inside the battery and convert them into the ability to store electrical energy. The current production process for battery acidification and charging is as follows: under normal pressure, first install an acid pot on the acid injection nozzle of the battery, and then use a special vacuum acidifier to add acid (electrolyte) to the batteries one by one; then, transport the acid-added batteries to the formation and charging station, and after multiple batteries (for example, 1-20 batteries) are connected to the wires as required, they are charged and formed. In the current battery acidification process, a special vacuum acidifier is used to add acid to the batteries one by one; and in the charging formation process, multiple batteries are charged and formed at the same time. This results in the following deficiencies in the current battery acidification and charging formation process:

[0003] First, there are multiple batteries in the same charging and formation process. During the period from the completion of acid addition to the start of charging, the reaction time between the acid and the battery is inconsistent (generally, chemical reactions are proportional to time, and the first added reacts first). This makes the heat generated by the reaction between the active substances in the battery and sulfuric acid inconsistent, and the size of the lead sulfate crystals generated inconsistent, resulting in inconsistent formation states of each battery, inconsistent conversion of active substances, and different battery performance. This is especially true in the field where multiple batteries are used in series, which reduces the battery group life.

[0004] Secondly, a vacuum acid adding machine is currently used to add acid to batteries one by one, and the acid adding efficiency is low. To improve the acid adding efficiency, it is necessary to repeatedly evacuate and release the vacuum. During this process, the high flow rate of electrolyte can easily wash away the active substances on the plates, causing a short circuit in the battery. Summary of the Invention

[0005] The object of the present invention is to provide an acid pot filling valve and an acid pot for battery acid addition, which enable acid addition to be performed simultaneously on a plurality of batteries according to the number of batteries in a charging and forming process in a battery acid addition process, so as to ensure consistency in acid addition time, thereby ensuring consistency in time of acid dipping reaction of each battery in the charging and forming process.

[0006] The technical solution of the present invention is:

[0007] An acid pot filling valve for battery acid addition, comprising:

[0008] The valve seat is provided with a valve hole which is vertically through-going, with the upper and lower ends of the valve hole being open. The upper end of the valve seat is provided with an upper sealing connection structure for cooperating with the acid pot, and the lower end of the valve seat is provided with a lower sealing connection structure for cooperating with the acid injection nozzle of the battery;

[0009] A sealing ring, the sealing ring being arranged on the inner wall of the valve hole;

[0010] Sealing ball, the outer diameter of the sealing ball is larger than the inner diameter of the sealing ring, the sealing ball is supported on the sealing ring under the action of its own weight, and the sealing ball and the sealing ring are in sealing contact;

[0011] When the sealing ball is in sealing contact with the sealing ring and the electrolyte in the valve hole above the sealing ball immerses the sealing ball, the buoyancy force on the sealing ball in the electrolyte is less than the gravity of the sealing ball, so that the sealing ball and the sealing ring maintain a state of sealing contact;

[0012] When the sealing bead is completely surrounded by the electrolyte, the buoyancy of the sealing bead in the electrolyte is greater than the weight of the sealing bead. Because the sealing bead is in sealing contact with the sealing ring, and when the electrolyte in the valve hole above the sealing bead immerses the sealing bead (i.e., when the electrolyte enters the valve hole from the upper end opening of the valve hole and immerses the sealing bead), the portion of the sealing bead below the ring seal will not be immersed in the electrolyte. Therefore, when the sealing bead is completely surrounded by the electrolyte, the buoyancy of the sealing bead in the electrolyte is greater than the weight of the sealing bead. When the sealing bead is in sealing contact with the sealing ring, and the electrolyte enters the valve hole above the sealing bead and immerses the sealing bead, the buoyancy of the sealing bead in the electrolyte is less than the weight of the sealing bead.

[0013] The application of the acid pot filling valve for battery acid filling in this scheme in the battery acid filling process is as follows:

[0014] The valve seat is sealed and connected to the bottom of the acid pot through the upper sealing connection structure, so that the upper end opening of the valve hole is connected to the inner cavity of the acid pot; the lower end opening of the valve hole is sealed and connected to the acid injection nozzle of the battery through the lower sealing connection structure, so that the lower end opening of the valve hole is connected to the acid injection nozzle of the battery;

[0015] Next, the electrolyte is added to the acid pot. The electrolyte in the acid pot enters the valve hole above the sealing ball and immerses the sealing ball. During this process, since the sealing ball is in sealing contact with the sealing ring, the buoyancy of the sealing ball in the electrolyte is less than the weight of the sealing ball. The sealing ball and the sealing ring will maintain a sealed connection, so that the acid pot filling valve remains closed and the electrolyte in the acid pot will not enter the battery.

[0016] Next, a vacuum device is used to evacuate the acid pot to add acid to the battery. Specifically, a pipe is used to connect the vacuum joint on the top of the acid pot to the vacuum device (such as a vacuum pump), and the upper part of the inner cavity of the acid pot is evacuated by the vacuum device. At this time, the air pressure inside the battery is greater than the air pressure in the acid pot. When the ball in sealed contact with the sealing ring is subjected to a force that is greater than the air pressure inside the acid pot and the electrolyte, the sealing ball will be pushed up and leave the valve seat, so that the sealing ball is completely surrounded by the electrolyte. At this time, the buoyancy of the sealing ball in the electrolyte is greater than the gravity of the sealing ball, and the sealing ball floats up. The valve is in the open state, and at the same time, the electrolyte in the acid pot enters the battery through the valve hole, completing the battery acid addition. Therefore, there is no need to use a dedicated vacuum acid addition machine. In the actual battery acid addition process, the vacuum joints on the top of multiple acid pots are connected to a vacuum pump (such as a vacuum pump) through pipes or placed in a vacuum box. This allows acid addition to be performed on multiple batteries simultaneously (the number of batteries in the battery acid addition process can be determined based on the number of batteries in the charging and forming process). This ensures consistency in the acid addition time, thereby ensuring consistency in the acid soaking time of each battery in the charging and forming process from the completion of acid addition to the start of formation charging. At the same time, since multiple batteries can be acidified simultaneously based on the number of batteries in the charging and forming process, the battery acid addition efficiency can be effectively improved. There is no need to repeatedly evacuate and release the vacuum to increase the acid addition speed of a single battery, which reduces the erosion of the active materials on the battery plates.

[0017] On the other hand, compared with the manual valve of the prior art, the acid kettle adding valve of the present programme utilizes the vacuum environment in the storage battery acid adding process, cooperates specific sealing ball bead, realizes the automatic opening of the acid kettle adding valve, does not need manual operation, is not only convenient to the actual acid adding operation like this; And can avoid the problem that causes the corresponding storage battery acid adding failure because of forgetting to open a certain manual valve. Compared with the electric valve of the prior art, although the existing electric valve can realize automatic opening and closing by program and switch, it needs to arrange complicated wire circuit, is unfavorable for the movement and disassembly of the acid kettle, and in the movement and disassembly process of the acid kettle, easily causes the problems such as wire circuit rupture, and causes the electric valve fault; The acid kettle adding valve of the present programme utilizes the vacuum environment in the storage battery acid adding process, cooperates specific sealing ball bead, realizes the automatic opening of the acid kettle adding valve, does not need to arrange complicated wire circuit, can move and disassemble the acid kettle easily.

[0018] Preferably, the valve cover is further included, the valve cover covers the upper end opening of the valve hole, and a liquid injection port is provided on the side wall of the valve cover. The arrangement of the valve cover can limit the sealing ball to move up and down in the cover, so that the sealing ball can fall back to the sealing position.

[0019] Preferably, when the sealing ball is in sealing contact with the sealing ring, the lower edge of the liquid injection port is higher than the highest point of the sealing ball. In the acid kettle, electrolyte flows into the valve hole through the liquid injection port. Because when the sealing ball is in sealing contact with the sealing ring, the lower edge of the liquid injection port is higher than the highest point of the sealing ball, the valve cover at the bottom of the liquid injection port forms a cofferdam for the ball. When electrolyte is added, or when electrolyte sways in the acid kettle, the flowing electrolyte can not exert a large impact force on the ball, to ensure that the sealing ball cooperates with the sealing ring to achieve a sealing effect.

[0020] Preferably, the top of the valve cover is provided with an air escape hole. In this way, when the top of the acid kettle is vacuumized, the gas in the valve cover and the valve hole can be discharged through the air escape hole.

[0021] Preferably, the upper sealing connection structure includes an upper plug-in sleeve extending upward from the edge of the upper opening of the valve hole and an upper sealing ring disposed on the outer side of the upper plug-in sleeve; the lower sealing connection structure includes a lower plug-in sleeve extending downward from the edge of the lower opening of the valve hole and a lower sealing ring disposed on the outer side of the lower plug-in sleeve. In this way, by inserting the upper plug-in sleeve into the liquid filling valve mounting hole at the bottom of the acid pot, the valve seat can be sealed to the bottom of the acid pot via the upper sealing connection structure, so that the upper opening of the valve hole is connected to the inner cavity of the acid pot; by inserting the lower plug-in sleeve into the acid filling nozzle of the battery, the lower sealing connection structure can be sealed to the acid filling nozzle of the battery, so that the lower opening of the valve hole is connected to the acid filling nozzle of the battery.

[0022] An acid kettle filling valve for adding acid to a battery, comprising:

[0023] The valve seat is provided with a valve hole which is vertically through-going, with the upper and lower ends of the valve hole being open. The upper end of the valve seat is provided with an upper sealing connection structure for cooperating with the acid pot, and the lower end of the valve seat is provided with a lower sealing connection structure for cooperating with the acid injection nozzle of the battery;

[0024] A sealing ring is fixedly arranged on the inner wall of the valve hole, and a ball limiting portion is provided in the valve hole below the sealing ring;

[0025] Sealing ball, the outer diameter of the sealing ball is larger than the inner diameter of the sealing ring, the sealing ball is located in the valve hole between the ball sealing ring and the ball limiter, the ball limiter is used to prevent the sealing ball from moving outward and downward, the sealing ball rests on the sealing ring and maintains sealing contact with the sealing ring;

[0026] When the sealing ball is completely surrounded by the electrolyte, the buoyancy force on the sealing ball in the electrolyte is greater than the gravity of the sealing ball.

[0027] The application of the acid pot filling valve for battery acid filling in this scheme in the battery acid filling process is as follows:

[0028] The valve seat is sealed and connected to the bottom of the acid pot through the upper sealing connection structure, so that the upper end opening of the valve hole is connected to the inner cavity of the acid pot; the lower end opening of the valve hole is sealed and connected to the acid injection nozzle of the battery through the lower sealing connection structure, so that the lower end opening of the valve hole is connected to the acid injection nozzle of the battery;

[0029] Next, the electrolyte is added to the acid pot. The electrolyte in the acid pot enters the valve hole above the sealing ball and immerses the sealing ball. During this process, the sealing ball rests on the sealing ring and maintains sealed contact with the sealing ring, so the electrolyte in the acid pot will not enter the battery.

[0030] Next, a vacuum device is used to evacuate the acid pot to add acid to the battery. Specifically, a pipe is used to connect the vacuum joint on the top of the acid pot to the vacuum device (such as a vacuum pump), and the upper part of the inner cavity of the acid pot is evacuated by the vacuum device. During this process, the air pressure inside the battery is greater than the air pressure in the acid pot. When the force exerted by the internal air pressure of the battery on the sealing ball is greater than the force exerted by the air pressure in the acid pot and the electrolyte, the sealing ball is pushed upward and passes through the sealing ring, so that the sealing ball is completely surrounded by the electrolyte. At this time, the buoyancy of the sealing ball in the electrolyte is greater than the sealing ball. The gravity of the ball causes the sealed ball to float upward. The electrolyte in the acid pot then flows through the valve hole into the battery, completing the acid addition process. This eliminates the need for a dedicated vacuum acid addition machine. In the actual battery acid addition process, the vacuum joints on the tops of multiple acid pots are connected to a vacuum pump (such as a vacuum pump) via pipes, allowing simultaneous acid addition for multiple batteries (the number of batteries in the acid addition process can be determined based on the number of batteries in the charging and forming process). This ensures consistency in the acid addition time, thereby ensuring consistency in the acid soaking time for each battery in the charging and forming process, from the completion of acid addition to the start of formation charging. Furthermore, the ability to simultaneously add acid to multiple batteries based on the number of batteries in the charging and forming process effectively improves battery acid addition efficiency. This eliminates the need for repeated vacuuming and releasing to increase the acid addition speed for a single battery, reducing the erosion of active materials on the battery plates.

[0031] On the other hand, compared with the manual valve of the prior art, the acid kettle adding valve of the present programme utilizes the vacuum environment in the storage battery acid adding process, cooperates specific sealing ball bead, realizes the automatic opening of the acid kettle adding valve, does not need manual operation, is not only convenient to the actual acid adding operation like this; And can avoid the problem that causes the corresponding storage battery acid adding failure because of forgetting to open a certain manual valve. Compared with the electric valve of the prior art, although the existing electric valve can realize automatic opening and closing by program and switch, it needs to arrange complicated wire circuit, is unfavorable for the movement and disassembly of the acid kettle, and in the movement and disassembly process of the acid kettle, easily causes the problems such as wire circuit rupture, and causes the electric valve fault; The acid kettle adding valve of the present programme utilizes the vacuum environment in the storage battery acid adding process, cooperates specific sealing ball bead, realizes the automatic opening of the acid kettle adding valve, does not need to arrange complicated wire circuit, can move and disassemble the acid kettle easily.

[0032] Preferably, the apparatus further comprises a valve cover that covers the upper opening of the valve hole, a liquid injection port provided on the sidewall of the valve cover, and an air escape hole provided on the top of the valve cover. The provision of the valve cover allows the sealing ball to move up and down within the cover, facilitating its return to the sealed position. When the top of the acid kettle is vacuumed, gas within the valve cover and the valve hole can be discharged through the air escape hole.

[0033] Preferably, the valve hole includes a tapered hole with an inner diameter that gradually decreases from top to bottom, and the tapered hole constitutes the ball stopper. In this way, the tapered hole can prevent the sealing ball from moving outward and downward.

[0034] Preferably, the upper sealing connection structure includes an upper plug-in sleeve extending upward from the edge of the upper opening of the valve hole and an upper sealing ring disposed on the outer side of the upper plug-in sleeve; the lower sealing connection structure includes a lower plug-in sleeve extending downward from the edge of the lower opening of the valve hole and a lower sealing ring disposed on the outer side of the lower plug-in sleeve. In this way, by inserting the upper plug-in sleeve into the liquid filling valve mounting hole at the bottom of the acid pot, the valve seat can be sealed to the bottom of the acid pot via the upper sealing connection structure, so that the upper opening of the valve hole is connected to the inner cavity of the acid pot; by inserting the lower plug-in sleeve into the acid filling nozzle of the battery, the lower sealing connection structure can be sealed to the acid filling nozzle of the battery, so that the lower opening of the valve hole is connected to the acid filling nozzle of the battery.

[0035] The invention relates to an acid pot for adding acid to a battery, comprising an acid pot filling valve for adding acid to the battery. A filling valve mounting hole is provided at the bottom of the acid pot, an upper sealing connection structure is sealedly connected to the filling valve mounting hole, and an upper end opening of the valve hole is communicated with an inner cavity of the acid pot.

[0036] The beneficial effects of the present invention are:

[0037] First, in the battery acid addition process, acid can be added to multiple batteries simultaneously according to the number of batteries in the charging formation process to ensure the consistency of acid addition time, thereby ensuring the time consistency of the acid dipping reaction of each battery in the charging formation process.

[0038] Secondly, since multiple batteries can be acidified simultaneously according to the number of batteries in the charging and formation process, the acidification efficiency of the batteries can be effectively improved; there is no need to repeatedly evacuate and release the vacuum in order to increase the acidification speed of a single battery, which reduces the erosion of the active materials on the battery plates.

[0039] Third, compared with the manual valve in the prior art, the acid kettle liquid-adding valve of the present solution utilizes the vacuum environment in the battery acid-adding process and cooperates with specific sealing balls to realize the automatic opening of the acid kettle liquid-adding valve without manual operation, which is not only convenient for the actual acid-adding operation; and can avoid the problem of causing the corresponding battery acid-adding failure due to forgetting to open a certain manual valve. Compared with the electric valve in the prior art, although the existing electric valve can realize automatic opening and closing through program and switch, it needs to arrange complicated wire circuits, which is unfavorable for the movement and disassembly of the acid kettle, and in the movement and disassembly process of the acid kettle, easily causes the problems such as wire circuit breakage, and causes the electric valve malfunction; the acid kettle liquid-adding valve of the present solution utilizes the vacuum environment in the battery acid-adding process and cooperates with specific sealing balls to realize the automatic opening of the acid kettle liquid-adding valve without the need to arrange complicated wire circuits, and can conveniently move and disassemble the acid kettle. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 The present invention is a structural schematic diagram of an acid pot filling valve for battery acid addition according to a first specific embodiment of the present invention.

[0041] Figure 2 The present invention is a structural diagram of an acid pot filling valve for battery acid addition according to a second specific embodiment of the present invention.

[0042] Figure 3 The present invention is a structural diagram of an acid kettle for adding acid to a battery according to a third specific embodiment of the present invention.

[0043] In the picture:

[0044] Valve seat 1, valve hole 1.1, step surface 1.2, ball stopper 1.3;

[0045] Sealing ring 2;

[0046] Sealing ball 3;

[0047] Upper sealing connection structure 4, upper plug sleeve 4.1, upper sealing ring 4.2;

[0048] Lower sealing connection structure 5, lower plug sleeve 5.1, lower sealing ring 5.2;

[0049] Valve cover 6, liquid injection port 6.1, air escape hole 6.2;

[0050] Acid pot 7, filling valve installation hole 7.1. DETAILED DESCRIPTION

[0051] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0052] Specific embodiment 1: Figure 1 As shown, a battery acid filling valve comprises a valve seat 1, a sealing ring 2, and a sealing ball 3. The valve seat is provided with a vertically extending valve hole 1.1. The valve hole is open at both ends. The upper end of the valve hole forms the electrolyte inlet for the acid filling valve, while the lower end of the valve hole forms the electrolyte outlet for the acid filling valve. An upper sealing connection structure 4 is provided at the upper end of the valve seat for mating with the acid filling valve. A lower sealing connection structure 5 is provided at the lower end of the valve seat for mating with the battery acid filling nozzle. The sealing ring 2 is fixedly mounted on the inner wall of the valve hole. The sealing ring is a rubber sealing ring. The outer diameter of the sealing ball is larger than the inner diameter of the sealing ring. The sealing ball 3 is supported on the sealing ring by its own weight and forms a sealing contact with the sealing ring under its own weight, achieving a gravity seal. The sealing ball can be a plastic ball or a rubber ball, and can be solid or hollow. In this embodiment, the sealing ball is a solid rubber ball.

[0053] When the sealing bead is in sealing contact with the sealing ring and the electrolyte in the valve hole above the sealing bead submerges the sealing bead, the buoyancy force on the sealing bead in the electrolyte is less than the weight of the sealing bead, so that the sealing bead maintains sealing contact with the sealing ring under the action of gravity. In this embodiment, when the sealing bead is in sealing contact with the sealing ring, at least two-thirds of the sealing bead is located above the sealing ring.

[0054] When the sealing ball is completely surrounded by the electrolyte, the buoyancy of the sealing ball in the electrolyte is greater than the gravity of the sealing ball; that is, the buoyancy of the sealing ball in the electrolyte in this embodiment is greater than the gravity of the sealing ball.

[0055] Because when the sealing ball is in sealing contact with the sealing ring, when the electrolyte in the valve hole above the sealing ball immerses the sealing ball (that is, when the electrolyte enters the valve hole from the upper end opening of the valve hole and immerses the sealing ball), the part of the sealing ball located below the ring seal will not be immersed in the electrolyte. Therefore, when the sealing ball is in sealing contact with the sealing ring, the electrolyte enters the valve hole above the sealing ball and immerses the sealing ball, the buoyancy of the sealing ball in the electrolyte can be less than the gravity of the sealing ball, so that the sealing ball maintains a sealed connection with the sealing ring under the action of gravity; when the sealing ball is completely surrounded by the electrolyte, the buoyancy of the sealing ball in the electrolyte can be greater than the gravity of the sealing ball.

[0056] The application of the acid pot filling valve for battery acid addition of the present embodiment in the battery acid addition process is as follows:

[0057] The valve seat is sealed and connected to the bottom of the acid pot through the upper sealing connection structure, so that the upper end opening of the valve hole is connected to the inner cavity of the acid pot; the lower end opening of the valve hole is sealed and connected to the acid injection nozzle of the battery through the lower sealing connection structure, so that the lower end opening of the valve hole is connected to the acid injection nozzle of the battery;

[0058] Next, the electrolyte is added to the acid pot. The electrolyte in the acid pot enters the valve hole above the sealing ball and immerses the sealing ball. During this process, since the sealing ball is in sealing contact with the sealing ring, the buoyancy of the sealing ball in the electrolyte is less than the weight of the sealing ball. The sealing ball and the sealing ring will maintain a sealed connection, so that the acid pot filling valve remains closed and the electrolyte in the acid pot will not enter the battery.

[0059] Next, a vacuum device is used to evacuate the acid pot to add acid to the battery. Specifically, a pipe is used to connect the vacuum joint on the top of the acid pot to the vacuum device (such as a vacuum pump), and the upper part of the inner cavity of the acid pot is evacuated by the vacuum device. At this time, the air pressure inside the battery is greater than the air pressure in the acid pot. When the ball in sealed contact with the sealing ring is subjected to a force that is greater than the air pressure inside the acid pot and the electrolyte, the sealing ball will be pushed up and leave the valve seat, so that the sealing ball is completely surrounded by the electrolyte. At this time, the buoyancy of the sealing ball in the electrolyte is greater than the gravity of the sealing ball, and the sealing ball floats up. The valve is in the open state, and at the same time, the electrolyte in the acid pot enters the battery through the valve hole, completing the battery acid addition. Therefore, there is no need to use a dedicated vacuum acid addition machine. In the actual battery acid addition process, the vacuum joints on the top of multiple acid pots are connected to a vacuum pump (such as a vacuum pump) through pipes or placed in a vacuum box. This allows acid addition to be performed on multiple batteries simultaneously (the number of batteries in the battery acid addition process can be determined based on the number of batteries in the charging and forming process). This ensures consistency in the acid addition time, thereby ensuring consistency in the acid soaking time of each battery in the charging and forming process from the completion of acid addition to the start of formation charging. At the same time, since multiple batteries can be acidified simultaneously based on the number of batteries in the charging and forming process, the battery acid addition efficiency can be effectively improved. There is no need to repeatedly evacuate and release the vacuum to increase the acid addition speed of a single battery, which reduces the erosion of the active materials on the battery plates.

[0060] On the other hand, compared with the manual valve of the prior art, the acid kettle adding valve of the present programme utilizes the vacuum environment in the storage battery acid adding process, cooperates specific sealing ball bead, realizes the automatic opening of the acid kettle adding valve, does not need manual operation, is not only convenient to the actual acid adding operation like this; And can avoid the problem that causes the corresponding storage battery acid adding failure because of forgetting to open a certain manual valve. Compared with the electric valve of the prior art, although the existing electric valve can realize automatic opening and closing by program and switch, it needs to arrange complicated wire circuit, is unfavorable for the movement and disassembly of the acid kettle, and in the movement and disassembly process of the acid kettle, easily causes the problems such as wire circuit rupture, and causes the electric valve fault; The acid kettle adding valve of the present programme utilizes the vacuum environment in the storage battery acid adding process, cooperates specific sealing ball bead, realizes the automatic opening of the acid kettle adding valve, does not need to arrange complicated wire circuit, can move and disassemble the acid kettle easily.

[0061] Further, such as Figure 1 As shown, the acid pot filling valve for battery acid addition also includes a valve cover 6. The valve cover seals the upper opening of the valve hole, and a liquid injection port 6.1 is provided on the side wall of the valve cover. The provision of the valve cover can confine the sealing ball to move up and down within the cover, facilitating the sealing ball to return to the sealing position.

[0062] Specifically, the valve housing is cylindrical, with a closed upper end and an open lower end. The lower end of the valve housing is inserted into the valve hole through the upper end opening of the valve hole, and the lower end of the valve housing is embedded in the valve hole. The inner wall of the valve hole is provided with a stepped surface 1.2, and the sealing ring is supported on the stepped surface. The lower end of the valve housing abuts against the upper end surface of the sealing ring.

[0063] Further, such as Figure 1 As shown, the top of the valve cover is provided with an air escape hole 6.2. In this way, when the top of the acid pot is vacuumed, the gas in the valve cover and the valve hole can be discharged through the air escape hole. In this embodiment, the top of the valve cover is in an upwardly protruding tapered shape.

[0064] Further, such as Figure 1 As shown, when the sealing ball is in sealing contact with the sealing ring, the lower edge of the liquid injection port is higher than the highest point of the sealing ball. The electrolyte in the acid pot flows through the liquid injection port into the valve hole. Because the lower edge of the liquid injection port is higher than the highest point of the sealing ball when the sealing ball is in sealing contact with the sealing ring, the valve cover below the liquid injection port effectively forms a cofferdam for the ball. This prevents significant impact from the flowing electrolyte on the ball during electrolyte addition or sloshing in the acid pot, ensuring a sealing effect achieved by the sealing ball and the sealing ring.

[0065] In this embodiment, the liquid injection port is a strip-shaped liquid injection port extending up and down. There are multiple liquid injection ports, and the multiple liquid injection ports are evenly distributed around the side wall of the valve cover.

[0066] Further, such as Figure 1 As shown, the upper sealing connection structure 4 includes an upper plug-in sleeve 4.1 extending upward from the edge of the upper opening of the valve hole, and an upper sealing ring 4.2 disposed on the outer surface of the upper plug-in sleeve. The lower sealing connection structure 5 includes a lower plug-in sleeve 5.1 extending downward from the edge of the lower opening of the valve hole, and a lower sealing ring 5.2 disposed on the outer surface of the lower plug-in sleeve. In this way, by inserting the upper plug-in sleeve into the liquid filling valve mounting hole at the bottom of the acid pot, the valve seat can be sealed to the bottom of the acid pot through the upper sealing connection structure, so that the upper opening of the valve hole is connected to the inner cavity of the acid pot; by inserting the lower plug-in sleeve into the acid injection nozzle of the battery, the lower sealing connection structure can be sealed to the acid injection nozzle of the battery, so that the lower opening of the valve hole is connected to the acid injection nozzle of the battery.

[0067] Specific embodiment 2: Figure 2As shown, an acid pot filling valve for battery acid filling comprises a valve seat 1, a sealing ring 2, and a sealing ball 3. The valve seat is provided with a vertically extending valve hole 1.1, which is open at both ends. The upper end of the valve hole forms the electrolyte inlet for the acid pot filling valve, while the lower end of the valve hole forms the electrolyte outlet for the acid pot filling valve. The upper end of the valve seat is provided with an upper sealing connection structure 4 for mating with the acid pot. The lower end of the valve seat is provided with a lower sealing connection structure 5 for mating with the battery's acid filling nozzle. The sealing ring is a rubber sealing ring.

[0068] The sealing ring 2 is fixedly arranged on the inner wall of the valve hole. A ball limiting portion 1.3 is provided in the valve hole below the sealing ring. The ball limiting portion is used to prevent the sealing ball from moving outward and downward. The outer diameter of the sealing ball 3 is larger than the inner diameter of the sealing ring. The sealing ball is located in the valve hole between the ball sealing ring and the ball limiting portion. The sealing ball rests on the sealing ring and maintains sealed contact with the sealing ring. Specifically, the lower part of the sealing ball rests on the ball limiting portion, and the upper part of the sealing ball rests on the sealing ring and is sealed and connected to the sealing ring. The sealing ball is a plastic ball or a rubber ball, and the sealing ball is a solid ball or a hollow ball. In this embodiment, the sealing ball is a hollow rubber ball.

[0069] When the sealing ball is completely surrounded by the electrolyte, the buoyancy of the sealing ball in the electrolyte is greater than the gravity of the sealing ball; that is, the buoyancy of the sealing ball in the electrolyte in this embodiment is greater than the gravity of the sealing ball.

[0070] The application of the acid pot filling valve for battery acid filling in this scheme in the battery acid filling process is as follows:

[0071] In order to ensure that the sealing ball is located in the valve hole between the bead sealing ring and the ball limiting part, and the sealing ball is against the sealing ring and maintains a sealed contact with the sealing ring, before the acid pot filling valve is installed on the bottom of the acid pot, the lower end opening of the valve hole will be vacuumed by a vacuum pump, and the sealing ball will be forced through the sealing ring by external force and stuck into the valve hole between the bead sealing ring and the ball limiting part to ensure that the sealing ball is stuck into the valve hole between the bead sealing ring and the ball limiting part, so that the sealing ball is against the sealing ring and maintains a sealed contact with the sealing ring. Then, the valve seat is sealed to the bottom of the acid pot through the upper sealing connection structure, so that the upper end opening of the valve hole is connected to the inner cavity of the acid pot; the lower sealing connection structure is sealed to the acid injection nozzle of the battery, so that the lower end opening of the valve hole is connected to the acid injection nozzle of the battery;

[0072] Next, add electrolyte into the acid pot. The electrolyte in the acid pot enters the valve hole above the sealing ball and immerses the sealing ball. During this process, the sealing ball rests on the sealing ring and maintains sealed contact with the sealing ring (the sealing ball is blocked by the sealing ring and cannot float up), so the electrolyte in the acid pot will not enter the battery.

[0073] Next, a vacuum device is used to evacuate the acid pot to add acid to the battery. Specifically, a pipe is used to connect the vacuum joint on the top of the acid pot to the vacuum device (such as a vacuum pump), and the upper part of the inner cavity of the acid pot is evacuated by the vacuum device. During this process, the air pressure inside the battery is greater than the air pressure in the inner cavity of the acid pot. When the force exerted by the internal air pressure of the battery on the sealing ball is greater than the force exerted by the air pressure in the acid pot and the electrolyte, the sealing ball is pushed upward and passes through the sealing ring, so that the sealing ball is completely surrounded by the electrolyte. At this time, the buoyancy of the sealing ball in the electrolyte is greater than the weight of the sealing ball. The sealed balls float upwards due to the applied force. The electrolyte in the acid pot then flows through the valve hole into the battery, completing the acid addition process. This eliminates the need for a dedicated vacuum acid addition machine. In the actual battery acid addition process, the vacuum joints on the tops of multiple acid pots are connected to vacuum equipment (such as a vacuum pump) via pipes or placed in a vacuum box. This allows for simultaneous acid addition of multiple batteries (the number of batteries in the battery acid addition process can be determined based on the number of batteries in the charging and forming process). This ensures consistency in the acid addition time, thereby ensuring consistency in the acid soaking time for each battery in the charging and forming process, from the completion of acid addition to the start of formation charging. Furthermore, the ability to simultaneously add acid to multiple batteries based on the number of batteries in the charging and forming process effectively improves battery acid addition efficiency. The need to repeatedly pump and release the vacuum to increase the acid addition speed of a single battery reduces erosion of the active materials on the battery plates.

[0074] On the other hand, compared with the manual valve of the prior art, the acid kettle adding valve of the present programme utilizes the vacuum environment in the storage battery acid adding process, cooperates specific sealing ball bead, realizes the automatic opening of the acid kettle adding valve, does not need manual operation, is not only convenient to the actual acid adding operation like this; And can avoid the problem that causes the corresponding storage battery acid adding failure because of forgetting to open a certain manual valve. Compared with the electric valve of the prior art, although the existing electric valve can realize automatic opening and closing by program and switch, it needs to arrange complicated wire circuit, is unfavorable for the movement and disassembly of the acid kettle, and in the movement and disassembly process of the acid kettle, easily causes the problems such as wire circuit rupture, and causes the electric valve fault; The acid kettle adding valve of the present programme utilizes the vacuum environment in the storage battery acid adding process, cooperates specific sealing ball bead, realizes the automatic opening of the acid kettle adding valve, does not need to arrange complicated wire circuit, can move and disassemble the acid kettle easily.

[0075] Further, such as Figure 2 As shown, the acid pot filling valve for battery acid addition also includes a valve cover 6. The valve cover seals the upper opening of the valve hole, and a liquid injection port 6.1 is provided on the side wall of the valve cover. The provision of the valve cover can confine the sealing ball to move up and down within the cover, facilitating the sealing ball to return to the sealing position.

[0076] The top of the valve cover is provided with an air escape hole 6.2. In this way, when the top of the acid pot is vacuumized, the gas in the valve cover and the valve hole can be discharged through the air escape hole. In the present embodiment, the top of the valve cover is in an upwardly protruding tapered shape.

[0077] Further, such as Figure 2 As shown, the valve hole includes a tapered hole with an inner diameter that gradually decreases from top to bottom, and the tapered hole constitutes the ball stop portion. In this way, the tapered hole can prevent the sealing ball from moving outward and downward.

[0078] Specifically, the valve cover is cylindrical, with a closed upper end and an open lower end. The lower end of the valve cover is inserted into the valve hole through the upper end opening of the valve hole, and the lower end of the valve cover is embedded in the valve hole. The inner wall of the valve hole is provided with a stepped surface, and the sealing ring is supported on the stepped surface. The lower end of the valve cover abuts the upper end surface of the sealing ring. The tapered hole is located below the stepped surface.

[0079] The liquid injection port is a strip-shaped liquid injection port extending up and down. There are multiple liquid injection ports, and the multiple liquid injection ports are evenly distributed around the side wall of the valve cover.

[0080] Further, such as Figure 2 As shown, the upper sealing connection structure 4 includes an upper plug-in sleeve 4.1 extending upward from the edge of the upper opening of the valve hole, and an upper sealing ring 4.2 disposed on the outer surface of the upper plug-in sleeve. The lower sealing connection structure 5 includes a lower plug-in sleeve 5.1 extending downward from the edge of the lower opening of the valve hole, and a lower sealing ring 5.2 disposed on the outer surface of the lower plug-in sleeve. In this way, by inserting the upper plug-in sleeve into the liquid filling valve mounting hole at the bottom of the acid pot, the valve seat can be sealed to the bottom of the acid pot through the upper sealing connection structure, so that the upper opening of the valve hole is connected to the inner cavity of the acid pot; by inserting the lower plug-in sleeve into the acid injection nozzle of the battery, the lower sealing connection structure can be sealed to the acid injection nozzle of the battery, so that the lower opening of the valve hole is connected to the acid injection nozzle of the battery.

[0081] Specific embodiment three: Figure 3As shown, an acid kettle for battery acid addition includes an acid kettle filling valve for battery acid addition. The specific structure of the acid kettle filling valve for battery acid addition is described in detail in Specific Embodiment 1 or Specific Embodiment 2. A filling valve mounting hole 7.1 is provided at the bottom of the acid kettle 7. This filling valve mounting hole is connected to the inner cavity of the acid kettle. An upper sealing connection structure is sealed with the filling valve mounting hole, and the upper end opening of the valve hole is connected to the inner cavity of the acid kettle. Specifically, an upper plug-in sleeve is inserted into the filling valve mounting hole at the bottom of the acid kettle. An upper sealing ring is positioned within the filling valve mounting hole and forms a sealing connection structure between the upper plug-in sleeve and the inner wall of the filling valve mounting hole, thereby achieving a sealed connection between the valve seat and the bottom of the acid kettle via the upper sealing connection structure. In this embodiment, the acid kettle filling valve of the acid kettle is easy to install and remove, can be installed on acid kettles of different sizes as needed, and is easy to replace if problems arise, thereby reducing costs. In actual use, acid kettle filling valves and acid kettles of different specifications can be selected according to different batteries.

[0082] Specific embodiment 4: An acid kettle for adding acid to a battery, including an acid kettle filling valve for adding acid to the battery. The specific structure of the acid kettle filling valve for adding acid to the battery is similar to that of specific embodiment 1 or Specific embodiment 2. The acid kettle includes an acid kettle housing, and the valve seat is integrally formed with the acid kettle housing. The upper end opening of the valve hole is connected to the inner cavity of the acid kettle. In actual use, different specifications of acid kettle filling valve and acid kettle can be selected according to different batteries.

[0083] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent transformation made to the above embodiment based on the technical essence of the present invention still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An acid pot filling valve for battery acid addition, characterized in that it comprises: The valve seat is provided with a valve hole which is vertically through-going, with the upper and lower ends of the valve hole being open. The upper end of the valve seat is provided with an upper sealing connection structure for cooperating with the acid pot, and the lower end of the valve seat is provided with a lower sealing connection structure for cooperating with the acid injection nozzle of the battery; A sealing ring, arranged on the inner wall of the valve hole; The outer diameter of the sealing ball is larger than the inner diameter of the sealing ring. The sealing ball is supported on the sealing ring under its own weight and makes the sealing ball and the sealing ring in sealing contact; The valve cover is used to seal the upper opening of the valve hole. The side wall of the valve cover is provided with a liquid injection port, and the top of the valve cover is provided with an air escape hole; When the sealing ball is in sealing contact with the sealing ring and the electrolyte in the valve hole above the sealing ball immerses the sealing ball, the buoyancy force on the sealing ball in the electrolyte is less than the gravity of the sealing ball, so that the sealing ball and the sealing ring maintain a state of sealing contact; The upper part of the inner cavity of the acid pot is evacuated by using a vacuum device, so that the internal pressure of the battery is greater than the internal pressure of the acid pot. The force exerted on the sealing ball by the internal pressure of the battery is greater than the force exerted by the internal pressure of the acid pot and the electrolyte, so that the sealing ball is pushed upward and passes through the sealing ring, so that the sealing ball is completely surrounded by the electrolyte. When the sealing ball is completely surrounded by the electrolyte, the buoyancy of the sealing ball in the electrolyte is greater than the gravity of the sealing ball, and the sealing ball floats up.

2. The acid pot filling valve for battery acid addition according to claim 1, characterized in that: When the sealing ball is in sealing contact with the sealing ring, the lower edge of the liquid injection port is higher than the highest point of the sealing ball.

3. The acid pot filling valve for battery acid addition according to claim 1 or 2, characterized in that: The upper sealing connection structure comprises an upper plug sleeve formed by extending upward from the edge of the upper end opening of the valve hole and an upper sealing ring arranged on the outer side of the upper plug sleeve.

4. The acid pot filling valve for battery acid addition according to claim 1 or 2, characterized in that: The lower sealing connection structure comprises a lower plug sleeve formed by extending downward from the edge of the lower end opening of the valve hole and a lower sealing ring arranged on the outer side of the lower plug sleeve.

5. An acid pot filling valve for battery acid addition, characterized by comprising: The valve seat is provided with a valve hole which is vertically through-going, with the upper and lower ends of the valve hole being open. The upper end of the valve seat is provided with an upper sealing connection structure for cooperating with the acid pot, and the lower end of the valve seat is provided with a lower sealing connection structure for cooperating with the acid injection nozzle of the battery; A sealing ring is fixedly arranged on the inner wall of the valve hole, and a ball limiting portion is provided in the valve hole below the sealing ring; The outer diameter of the sealing ball is larger than the inner diameter of the sealing ring. The sealing ball is located in the valve hole between the ball sealing ring and the ball stopper. The ball stopper is used to prevent the sealing ball from moving outward and downward. The sealing ball rests on the sealing ring and maintains sealing contact with the sealing ring. The valve cover is used to seal the upper opening of the valve hole. The side wall of the valve cover is provided with a liquid injection port, and the top of the valve cover is provided with an air escape hole; The upper part of the inner cavity of the acid pot is evacuated by using a vacuum device, so that the internal pressure of the battery is greater than the internal pressure of the acid pot. The force exerted on the sealing ball by the internal pressure of the battery is greater than the force exerted by the internal pressure of the acid pot and the electrolyte, so that the sealing ball is pushed upward and passes through the sealing ring, so that the sealing ball is completely surrounded by the electrolyte. When the sealing ball is completely surrounded by the electrolyte, the buoyancy of the sealing ball in the electrolyte is greater than the gravity of the sealing ball, and the sealing ball floats up.

6. The acid pot filling valve for battery acid addition according to claim 5, characterized in that: The valve hole comprises a tapered hole with an inner diameter gradually decreasing from top to bottom, and the tapered hole constitutes the ball limiting portion.

7. The acid pot filling valve for battery acid addition according to claim 5 or 6, characterized in that: The upper sealing connection structure comprises an upper plug sleeve formed by extending upward from the edge of the upper end opening of the valve hole and an upper sealing ring arranged on the outer side of the upper plug sleeve.

8. The acid pot filling valve for battery acid addition according to claim 5 or 6, characterized in that: The lower sealing connection structure comprises a lower plug sleeve formed by extending downward from the edge of the lower end opening of the valve hole and a lower sealing ring arranged on the outer side of the lower plug sleeve.

9. An acid kettle for adding acid to batteries, characterized by: The acid pot filling valve for battery acid filling comprises the acid pot according to any one of claims 1 to 8, wherein a filling valve mounting hole is provided at the bottom of the acid pot, the upper sealing connection structure is sealedly connected to the filling valve mounting hole, and the upper end opening of the valve hole is communicated with the inner cavity of the acid pot.

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