Search

CN-121972055-A - Equipment is prepared to weak acid electrolyte of battery

CN121972055ACN 121972055 ACN121972055 ACN 121972055ACN-121972055-A

Abstract

The invention discloses weak acid electrolyte preparation equipment of a battery, which relates to the field of battery electrolyte preparation and comprises a mixed liquid bottle, a stock solution bottle, a flow regulating component and a mixing stirring component, wherein the mixed liquid bottle is used as a main reaction chamber for electrolyte preparation, the stock solution bottle is connected to the top of the mixed liquid bottle in a penetrating way and is used for containing high-concentration acid liquor, the flow regulating component comprises a valve head, the valve head is arranged at the junction of the mixed liquid bottle and the stock solution bottle and can be adjusted in a lifting way, the mixing stirring component comprises a stirrer for stirring the mixed liquid bottle, the high-concentration acid liquor is converted into a uniform film flowing along the inner wall by utilizing a frustum-shaped valve head, the heat dissipation area is greatly increased, local hot spots are eliminated, and meanwhile, a spherical stirring head and a reverse inclined blade which do reciprocating motion are matched drive a bottom layer solution to roll upwards along the wall and undergo severe reverse mass transfer exchange with a descending acid liquor film, so that deep dilution is completed.

Inventors

  • Tao Zeheng
  • TAO YONG
  • WANG GUANQIU
  • GAO LI
  • YANG CHENCHEN

Assignees

  • 南京奥莱科技有限公司

Dates

Publication Date
20260505
Application Date
20260408

Claims (9)

  1. 1. A weak acid electrolyte preparation device of a battery is characterized by comprising, A mixed solution bottle (10) serving as a main reaction chamber in which an electrolyte is disposed; The stock solution bottle (20) is connected to the top of the mixed solution bottle (10) in a penetrating way and is used for containing high-concentration acid solution; the flow regulating assembly (30), the flow regulating assembly (30) comprises a valve head (31), the valve head (31) is arranged at the junction of the mixed liquid bottle (10) and the raw liquid bottle (20), and the valve head (31) can be adjusted in a lifting manner; a mixing and stirring assembly (40), wherein the mixing and stirring assembly (40) comprises a stirrer (41) for stirring the mixed liquid bottle (10); The flow rate of the stock solution in the stock solution bottle (20) is regulated through the lifting of the valve head (31), the stock solution flows along the inner wall of the mixed solution bottle (10), the solution in the mixed solution bottle (10) is stirred from bottom to top through the stirrer (41), and the solution is stuck to the inner wall of the mixed solution bottle (10) to be stirred in a rolling way.
  2. 2. The weak acid electrolyte preparation device of a battery according to claim 1, wherein the mixed liquor bottle (10) comprises a spherical bottle bottom (11) and a frustum-shaped bottle body (12); The valve head (31) is of a frustum-shaped structure, the taper of the outer peripheral surface of the valve head is accurately matched with the slope of the inner wall at the top of the bottle body (12), and an annular liquid gap (14) is formed between the valve head (31) and the inner wall of the bottle body (12); the stirrer (41) comprises a spherical stirring head (411), and the stirring head (411) is fixedly provided with an operating rod (42) penetrating through the valve head (31) and the stock solution bottle (20).
  3. 3. The weak acid electrolyte preparation device of a battery according to claim 2, wherein the top of the valve head (31) is connected with a hollow valve rod (32), the operating rod (42) penetrates through the valve rod (32), the top of the stock solution bottle (20) is rotationally connected with an adjusting nut (33), the adjusting nut (33) is in threaded connection with the operating rod (42) to drive the valve head (31) to perform accurate lifting movement, and the size of the liquid gap (14) is changed.
  4. 4. The weak acid electrolyte preparation device of a battery according to claim 2, wherein the stirring head (411) is fixedly connected through a frustum-shaped stirring body (412), and a plurality of stirring blades (413) distributed in a ring shape are fixedly installed on the stirring body (412).
  5. 5. The weak acid electrolyte preparation apparatus for a battery according to claim 4, wherein said stirring blades (413) are disposed obliquely, and the oblique directions of a plurality of said stirring blades (413) are opposite.
  6. 6. The weak acid electrolyte preparation device of a battery according to claim 2, wherein the stock solution bottle (20) comprises a spherical pin (21), a hopper two (22) is connected through one side of the pin (21), and a hopper one (13) is connected through one side of the bottle body (12) away from the hopper two (22).
  7. 7. The weak acid electrolyte preparation device of a battery according to claim 1, wherein the mixed liquor bottle (10) is fixed on a support frame (50); one side of the mixed liquid bottle (10) is fixed with a mounting frame (60).
  8. 8. The weak acid electrolyte preparation device of a battery according to claim 7, wherein the support frame (50) comprises a lower flange (51) and a plurality of legs (52), and the mounting frame (60) comprises a pipe hoop (61) and a mounting plate (62) fixed to the pipe hoop (61).
  9. 9. A weak acid electrolyte preparation device for a battery according to claim 2, wherein the operating rod (42) is screw-coupled to the lock nut (34).

Description

Equipment is prepared to weak acid electrolyte of battery Technical Field The invention relates to the field of battery electrolyte configuration, in particular to weak acid electrolyte configuration equipment of a battery. Background In the field of battery manufacturing, the pH value (pH value) of an electrolyte is one of the key parameters affecting the electrochemical performance, cycle life and safety of a battery. Especially in the preparation process of a weak acid electrolyte system, an acid-base neutralization reaction or a dilution process of high-concentration acid liquid is usually involved. Although the thermal effect of weak acid systems is relatively mild compared to strong acid systems, their reactive nature is accompanied by exothermic phenomena. In actual production, if the acid liquor is added at too high speed or is unevenly stirred, local violent heat release is easily generated in a mixing area, so that a remarkable temperature gradient is generated in the solution. Since the measurement of pH is essentially based on the response of the electrode to the activity of hydrogen ions, the response process strictly follows the Nernst (Nernst) equation, with a high degree of temperature sensitivity. The local instantaneous temperature rise not only can lead to the deviation of the pH meter indicating value from the true value and the generation of measurement errors, but also can lead to the failure of feedback control due to temperature fluctuation, thereby affecting the accurate proportioning of electrolyte components. Therefore, how to effectively inhibit local temperature rise in the preparation process is a technical problem to be solved in the field of electrolyte preparation at present. Disclosure of Invention The invention aims to solve the problem that the pH value shown by the pH meter deviates from the true value due to local temperature rise in the preparation process, and provides weak acid electrolyte preparation equipment of a battery. In order to achieve the above purpose, the invention adopts the following technical scheme that the invention comprises, A mixed solution bottle as a main reaction chamber for the configuration of an electrolyte; the stock solution bottle is connected to the top of the mixed solution bottle in a penetrating way and is used for containing high-concentration acid solution; The flow regulating assembly comprises a valve head, the valve head is arranged at the junction of the mixed liquid bottle and the stock liquid bottle, and the valve head can be adjusted in a lifting manner; the mixing and stirring assembly comprises a stirrer for stirring the mixed liquid bottle; the flow of the stock solution in the stock solution bottle is regulated through the lifting of the valve head, the stock solution flows along the inner wall of the mixed solution bottle, the solution in the mixed solution bottle is stirred from bottom to top through the stirrer, and the solution is stuck to the inner wall of the mixed solution bottle and is stirred in a rolling way. As a further description of the technical scheme, the mixed liquid bottle comprises a spherical bottle bottom and a frustum-shaped bottle body; The valve head is of a frustum-shaped structure, the taper of the outer peripheral surface of the valve head is accurately matched with the slope of the inner wall of the top of the bottle body, and an annular liquid gap is formed between the valve head and the inner wall of the bottle body; The stirrer comprises a spherical stirring head, and an operating rod penetrating through the valve head and the stock solution bottle is fixed on the stirring head. As further description of the technical scheme, the top of the valve head is connected with a hollow valve rod, the operating rod penetrates through the valve rod, the top of the stock solution bottle is rotationally connected with an adjusting nut, and the adjusting nut is in threaded connection with the operating rod to drive the valve head to accurately lift and move, so that the size of a liquid gap is changed. As further description of the technical scheme, the stirring head is fixedly connected through a frustum-shaped stirring body, and a plurality of stirring blades which are annularly distributed are fixedly arranged on the stirring body. As a further description of the technical scheme, the stirring blades are obliquely arranged, and the oblique directions of the stirring blades are opposite. As further description of the technical scheme, the stock solution bottle comprises a spherical ball bottle, one side of the ball bottle is connected with a hopper II in a through manner, and one side of the bottle body, which is away from the hopper II, is connected with a hopper I in a through manner. As a further description of the technical scheme, the mixed liquid bottle is fixed on a supporting frame; One side of the mixed liquid bottle is fixed with a mounting frame. As a further description of the above techni