Electrolyte pH value control device

Abstract

The utility model belongs to the technical field of acidity and alkalinity control devices, and particularly relates to an electrolyte acidity and alkalinity control device which comprises a liquid inlet pipe, a piston plate slidably mounted in the liquid inlet pipe, a push rod mounted on the top side of the piston plate, a connecting plate mounted at the action end of a telescopic rod, the push rod fixed on the bottom side of the connecting plate, and a limiting ring slidably mounted on the outer side of the liquid inlet pipe. A limiting rod is fixedly connected to the other end of the bottom side of the connecting plate, a limiting block is fixedly connected to the limiting rod, an electrode plate is installed on the top side of the limiting block, an electrode slice is installed on the bottom side of a limiting ring, and a liquid inlet is connected to one side of the bottom end of a liquid inlet pipe; and when the electrode plate is in contact with the electrode slice, the control panel controls the telescopic rod to extend, so that the liquid inlet amount of the acid and alkali liquid is accurately controlled, and the accuracy and the efficiency of adjusting the pH value of the electrolyte are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pH control devices, in particular to an electrolyte pH control device. Background Art

[0002] During the preparation of the electrode liquid, the pH of the electrolyte needs to be controlled. In the battery, inappropriate pH leads to the obstruction of charge transfer on the electrode surface, thereby reducing the battery's charge and discharge efficiency and cycle life.

[0003] A Chinese patent with announcement number CN213376182U discloses an electrolyte preparation tank, including a tank body, a stirring device and a heating device arranged on the tank body, a circuit board fixed on the tank body, a liquid outlet pipe connected to the tank body, a return pipe connected to the tank body, the liquid outlet pipe and the return pipe are both connected to an electric three-way valve, a circulation pump is arranged on the liquid outlet pipe between the electric three-way valve and the tank body, a concentration sensor is arranged on the return pipe or the tank body, and the concentration sensor is interlocked with the circulation pump and the electric three-way valve through the circuit board.

[0004] However, the above-mentioned electrolyte preparation tank still has some problems. In practical applications, when controlling the pH, it is impossible to quantitatively control the feed amount of the acid and alkali solution, which will cause the pH of the electrolyte to fluctuate greatly, resulting in inconsistent product performance and possible defective or unqualified products. Therefore, an electrolyte pH control device is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the problems raised in the background technology, the utility model provides an electrolyte pH control device.

[0006] The utility model adopts the following technical scheme to solve the technical problem: the utility model discloses an electrolyte pH control device, comprising a tank body, wherein two liquid inlet pipes are connected to the top side of the tank body, a piston plate is slidably installed inside the liquid inlet pipe, a push rod is installed on the top side of the piston plate, two support frames are installed on the top side of the tank body, telescopic rods are symmetrically installed inside the support frames, a connecting plate is installed on the active end of the telescopic rod, the push rod is fixedly installed on one end of the bottom side of the connecting plate, a limiting ring is slidably installed on the outer side of the liquid inlet pipe, a locking screw is rotatably installed inside the limiting ring, the other end of the bottom side of the connecting plate is fixedly connected to the limiting rod, a rod hole is opened inside the limiting ring, one end of the limiting rod passes through the rod hole and is fixedly connected to a limiting block, an electrode plate is installed on the top side of the limiting block, an electrode sheet is installed on the bottom side of the limiting ring located outside the limiting rod, and a liquid inlet is connected to one side of the bottom end of the liquid inlet pipe, so as to realize accurate control of the liquid inflow of acid and alkali solution and improve the accuracy and efficiency of electrolyte pH regulation.

[0007] Preferably, the top end of the tank body is connected to a feed pipe, and the bottom end of the tank body is connected to a discharge pipe, which facilitates the entry of water and the discharge of electrolyte.

[0008] Preferably, two rotating shafts are rotatably installed through the bottom side of the tank body, and four groups of three stirring rods are equidistantly installed on the outer walls of the rotating shafts to achieve sufficient mixing of the electrolyte.

[0009] Preferably, a driving gear and a driven gear are respectively installed at the bottom end of the rotating shaft, and the driving gear and the driven gear are meshed with each other. An L-shaped plate is installed on the bottom side of the tank body, and a stirring motor is installed inside the L-shaped plate. One end of the rotating shaft is cooperatively connected with the output end of the stirring motor, so that the two rotating shafts can rotate in opposite directions, thereby enhancing the stirring effect and ensuring the uniformity of the electrolyte composition.

[0010] Preferably, three supporting legs are equidistantly installed on the outer wall of the bottom end of the tank body, and a pH sensor is installed on the inner wall of the bottom end of the tank body, wherein the pH sensor is used to monitor the pH value of the electrolyte in the tank body and can monitor the pH value of the electrolyte in real time.

[0011] Preferably, a control panel is installed on the outer wall of the tank body, and the control panel is used for electrical connection between the electrode plates and electrode sheets inside the device and the telescopic rod and the pH sensor, and is used for signal transmission between the electrode plates and electrode sheets and the pH sensor, as well as for operation control of the telescopic rod, thereby improving the degree of automation of the device and improving the preparation accuracy of the electrolyte.

[0012] The utility model is beneficial in that:

[0013] 1. When the telescopic rod of the utility model is shortened, the push rod, the limit rod and the limit block are driven to move upward through the connecting plate, thereby pulling the piston plate to slide upward in the liquid inlet pipe, so that the acid and alkali liquid enter the liquid inlet pipe from the liquid inlet port. When the electrode plate contacts the electrode sheet, the control panel controls the telescopic rod to extend, thereby realizing accurate control of the liquid inlet amount of the acid and alkali liquid, and improving the accuracy and efficiency of the pH adjustment of the electrolyte;

[0014] 2. The stirring motor of the utility model is started to drive the rotating shaft to rotate. Since the driving gear and the driven gear are meshed with each other, the two rotating shafts can rotate in opposite directions, and the stirring rod rotates accordingly to fully stir the electrolyte in the tank body, ensuring that the newly added acid and alkali solution can be quickly and evenly mixed in the electrolyte. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 This is a schematic diagram of the structure of the medium axis side view of the utility model;

[0017] Figure 2 It is a schematic diagram of the main structure of the electrolyte pH control device;

[0018] Figure 3 It is a schematic diagram of the structure of the acid and alkali solution intake control component;

[0019] Figure 4 It is a partial cross-sectional structural schematic diagram of the electrolyte pH control device;

[0020] Figure 5 Schematic diagram of the structure of the mixing and stirring component.

[0021] In the figure: 1. tank body; 2. liquid inlet pipe; 3. piston plate; 4. push rod; 5. support frame; 6. telescopic rod; 7. connecting plate; 8. limit ring; 9. locking screw; 10. limit rod; 11. limit block; 12. electrode plate; 13. electrode sheet; 14. liquid inlet; 15. feed pipe; 16. discharge pipe; 17. rotating shaft; 18. stirring rod; 19. driving gear; 20. driven gear; 21. L-shaped plate; 22. stirring motor; 23. supporting leg; 24. PH sensor; 25. control panel. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4As shown, an electrolyte pH control device comprises a tank body 1, wherein two liquid inlet pipes 2 are connected to the top side of the tank body 1, a piston plate 3 is slidably installed inside the liquid inlet pipe 2, a push rod 4 is installed on the top side of the piston plate 3, two support frames 5 are installed on the top side of the tank body 1, telescopic rods 6 are symmetrically installed inside the support frames 5, a connecting plate 7 is installed on the active end of the telescopic rod 6, the push rod 4 is fixedly installed on one end of the bottom side of the connecting plate 7, a limiting ring 8 is slidably installed on the outer side of the liquid inlet pipe 2, a locking screw 9 is rotatably installed inside the limiting ring 8, a limiting rod 10 is fixedly connected to the other end of the bottom side of the connecting plate 7, a rod hole is opened inside the limiting ring 8, one end of the limiting rod 10 passes through the rod hole and is fixedly connected to a limiting block 11, an electrode plate 12 is installed on the top side of the limiting block 11, an electrode sheet 13 is installed on the bottom side of the limiting ring 8 located outside the limiting rod 10, and a liquid inlet 14 is connected to one side of the bottom end of the liquid inlet pipe 2;

[0024] Three supporting legs 23 are equidistantly installed on the outer wall of the bottom end of the tank body 1, and a pH sensor 24 is installed on the inner wall of the bottom end of the tank body 1, wherein the pH sensor 24 is used to monitor the pH value of the electrolyte in the tank body 1, and a control panel 25 is installed on the outer wall of the tank body 1, and the control panel 25 is used to electrically connect the electrode plate 12 and the electrode sheet 13 inside the device, as well as the telescopic rod 6 and the pH sensor 24, and is used for signal transmission between the electrode plate 12 and the electrode sheet 13 and the pH sensor 24, and for operation control of the telescopic rod 6; during operation, in actual applications, when the pH value is controlled, the feed amount of the acid and alkali solution cannot be quantitatively controlled, which will cause the pH value of the electrolyte to fluctuate greatly, resulting in inconsistent product performance, and possible defective or unqualified products. First, water enters the tank body 1 through the feed pipe 15. When the pH value of the electrolyte needs to be adjusted, the pH sensor 24 will first monitor the pH value of the electrolyte in the tank body 1 in real time, and transmit the data Transmitted to the control panel 25, if the pH value is not within the set range, loosen the locking screw 9, so that the limit ring 8 drives the electrode sheet 13 to slide to a suitable position on the outer wall of the liquid inlet pipe 2, and then tighten the locking screw 9. When the telescopic rod 6 is shortened, the push rod 4, the limit rod 10 and the limit block 11 are driven to move upward through the connecting plate 7, thereby pulling the piston plate 3 to slide upward in the liquid inlet pipe 2, so that the acid and alkali liquid enter the liquid inlet pipe 2 from the liquid inlet port 14. When the electrode plate 12 contacts the electrode sheet 13, an electrical signal is generated and the signal is transmitted to the control panel 25. The control panel 25 controls the telescopic rod 6 to extend. When the telescopic rod 6 is extended, the push rod 4 is driven to move downward through the connecting plate 7, thereby pushing the piston plate 3 to slide downward in the liquid inlet pipe 2, so that the acid and alkali liquid finally flows into the tank body 1, thereby realizing accurate control of the liquid inflow of the acid and alkali liquid, and improving the accuracy and efficiency of the pH adjustment of the electrolyte. The model of the PH sensor 24 is KPH8020.

[0025] See also Figure 1 , 2 As shown in Figure 5, two rotating shafts 17 are rotatably installed inside the bottom side of the tank body 1, and four groups of three stirring rods 18 are equidistantly installed on the outer wall of the rotating shaft 17. A driving gear 19 and a driven gear 20 are respectively installed at the bottom end of the rotating shaft 17, and the driving gear 19 and the driven gear 20 are meshed with each other. An L-shaped plate 21 is installed on the bottom side of the tank body 1, and a stirring motor 22 is installed inside the L-shaped plate 21. The top end of the tank body 1 is connected to a feed pipe 15, and the bottom end of the tank body 1 is connected to a discharge pipe 16. During operation, in the battery, inappropriate pH causes the charge transfer on the electrode surface to be blocked. Thereby reducing the charging and discharging efficiency and cycle life of the battery. After the acid and alkali liquid enter the tank body 1, the stirring motor 22 is started to drive the rotating shaft 17 to rotate. Since the driving gear 19 and the driven gear 20 are meshed with each other, the two rotating shafts 17 can rotate in the opposite direction, and the stirring rod 18 rotates accordingly to fully stir the electrolyte in the tank body 1, ensuring that the newly added acid and alkali liquid can be quickly and evenly mixed in the electrolyte, thereby enhancing the stirring effect. When the pH value of the electrolyte reaches the set value, the PH sensor 24 feeds back the signal to the control panel 25, and the control panel 25 can open the valve of the discharge pipe 16, and the qualified electrolyte moves the discharge pipe 16 to be discharged.

[0026] Working principle: First, water enters the tank body 1 through the feed pipe 15. When the pH value of the electrolyte needs to be adjusted, the pH sensor 24 will first monitor the pH value of the electrolyte in the tank body 1 in real time and transmit the data to the control panel 25. If the pH value is not within the set range, loosen the locking screw 9 so that the limit ring 8 drives the electrode sheet 13 to slide to a suitable position on the outer wall of the liquid inlet pipe 2, and then tighten the locking screw 9. When the telescopic rod 6 is shortened, the push rod 4, the limit rod 10 and the limit block 11 are driven to move upward through the connecting plate 7, thereby pulling the piston plate 3 upward in the liquid inlet pipe 2. Slide, so that the acid and alkali liquid enters the liquid inlet pipe 2 from the liquid inlet port 14. When the electrode plate 12 contacts the electrode sheet 13, an electrical signal is generated and transmitted to the control panel 25. The control panel 25 controls the telescopic rod 6 to extend. When the telescopic rod 6 extends, the push rod 4 is driven to move downward through the connecting plate 7, thereby pushing the piston plate 3 to slide downward in the liquid inlet pipe 2, so that the acid and alkali liquid finally flows into the tank body 1, realizing accurate control of the liquid inlet amount of the acid and alkali liquid, and improving the accuracy and efficiency of the pH adjustment of the electrolyte. The model of the PH sensor 24 is KPH8020;

[0027] After the acid and alkali liquid enters the tank body 1, the stirring motor 22 is started to drive the rotating shaft 17 to rotate. Since the driving gear 19 and the driven gear 20 are meshed with each other, the two rotating shafts 17 can rotate in opposite directions, and the stirring rod 18 rotates accordingly to fully stir the electrolyte in the tank body 1, ensuring that the newly added acid and alkali liquid can be quickly and evenly mixed in the electrolyte, thereby enhancing the stirring effect. When the pH value of the electrolyte reaches the set value, the PH sensor 24 feeds back a signal to the control panel 25, and the control panel 25 can open the valve of the discharge pipe 16, and the qualified electrolyte moves to the discharge pipe 16 to be discharged.

[0028] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An electrolyte pH control device, characterized in that: The invention comprises a tank body (1), wherein two liquid inlet pipes (2) are connected to the top side of the tank body (1), a piston plate (3) is slidably mounted inside the liquid inlet pipe (2), a push rod (4) is mounted on the top side of the piston plate (3), two support frames (5) are mounted on the top side of the tank body (1), telescopic rods (6) are symmetrically mounted inside the support frames (5), a connecting plate (7) is mounted on the active end of the telescopic rod (6), the push rod (4) is fixedly mounted on one end of the bottom side of the connecting plate (7), and a push rod (4) is slidably mounted on the outer side of the liquid inlet pipe (2). A limiting ring (8), wherein a locking screw (9) is rotatably mounted inside the limiting ring (8), a limiting rod (10) is fixedly connected to the other end of the bottom side of the connecting plate (7), a rod hole is opened inside the limiting ring (8), one end of the limiting rod (10) passes through the rod hole and is fixedly connected to a limiting block (11), an electrode plate (12) is mounted on the top side of the limiting block (11), an electrode sheet (13) is mounted on the bottom side of the limiting ring (8) located outside the limiting rod (10), and a liquid inlet (14) is connected to one side of the bottom end of the liquid inlet pipe (2).

2. The electrolyte pH control device according to claim 1, characterized in that: The top end of the tank body (1) is connected to a feed pipe (15), and the bottom end of the tank body (1) is connected to a discharge pipe (16).

3. The electrolyte pH control device according to claim 2, characterized in that: Two rotating shafts (17) are rotatably mounted through the bottom of the tank body (1), and four groups of three stirring rods (18) are equidistantly mounted on the outer walls of the rotating shafts (17).

4. The electrolyte pH control device according to claim 3, characterized in that: A driving gear (19) and a driven gear (20) are respectively mounted on the bottom end of the rotating shaft (17), and the driving gear (19) and the driven gear (20) are meshed with each other. An L-shaped plate (21) is mounted on the bottom side of the tank body (1), and a stirring motor (22) is mounted inside the L-shaped plate (21). One end of the rotating shaft (17) is matched and connected to an output end of the stirring motor (22).

5. The electrolyte pH control device according to claim 4, characterized in that: Three supporting legs (23) are equidistantly mounted on the outer wall of the bottom end of the tank body (1), and a pH sensor (24) is mounted on the inner wall of the bottom end of the tank body (1), wherein the pH sensor (24) is used to monitor the pH value of the electrolyte in the tank body (1).

6. The electrolyte pH control device according to claim 5, characterized in that: A control panel (25) is installed on the outer wall of the tank body (1), and the control panel (25) is used to electrically connect the electrode plate (12) and the electrode sheet (13) inside the device, as well as the telescopic rod (6) and the pH sensor (24), and is used for signal transmission between the electrode plate (12), the electrode sheet (13) and the pH sensor (24), and for operating control of the telescopic rod (6).

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