Pressure-impact-resistant liquid reservoir for zinc-silver reserve battery

Abstract

The invention discloses a pressure-impact-resistant liquid reservoir for a zinc-silver reserve battery, which comprises a liquid reservoir shell consisting of an upper shell and a lower shell and a liquid storage bag positioned in the liquid reservoir shell and used for storing electrolyte, a high-pressure gas inlet is formed in the top of the upper shell, an electrolyte outlet is formed in the bottom of the lower shell, and a high-pressure gas outlet is formed in the top of the lower shell. The high-pressure gas inlet of the upper shell of the liquid reservoir shell protrudes towards the outer side of the top of the upper shell to form a cavity serving as a peak pressure buffer space, and the high-pressure gas inlet is not in contact with the liquid reservoir. According to the invention, a buffer space with a small volume is designed between the liquid reservoir shell and the liquid reservoir bag wrapping the electrolyte, so that the peak pressure can be effectively reduced, and the reliability of impact pressure resistance of the liquid reservoir is improved. And meanwhile, the buffer space is small, so that the balance pressure of the liquid reservoir is basically not influenced, and the electrolyte distribution in the battery is not influenced.

Description

Technical Field

[0001] The invention belongs to the technical field of reserve batteries, and in particular relates to a pressure-shock-resistant liquid storage container for zinc-silver reserve batteries. Background Art

[0002] Zinc-silver reserve batteries are widely used in various fields, especially in equipment and instruments with high voltage accuracy, due to their unique advantages such as stable discharge voltage, high voltage accuracy, good reliability and safety.

[0003] In recent years, due to the technological development of application platforms, the capacity of small zinc-silver reserve batteries required for platform loads has become increasingly higher, and the electrolyte required for zinc-silver batteries has also increased, and the volume of the reservoir for storing electrolytes has become increasingly larger. Since zinc-silver reserve batteries are generally generated by the gas generated by the gas generator entering the reservoir, the plastic bag wrapped in the electrolyte is pushed to deform rapidly, and the electrolyte is ejected from the reservoir into the combined plate group to activate the battery. Since the gas generator generates gas at a speed much faster than the deformation speed of the wrapped electrolyte and the flow rate of the electrolyte, the gas accumulates in the reservoir, which will produce a large peak pressure, which will have an impact on the outer shell of the reservoir. After the electrolyte is ejected from the reservoir, the air pressure in the reservoir tends to a balanced pressure. This balanced pressure plays an important role in the distribution of electrolyte inside the battery. Due to the increase in the volume of the reservoirs of various projects in recent years, the requirements for the reservoir's ability to withstand impact pressure should also be increased accordingly.

[0004] like Figure 1 As shown, the prior art liquid reservoir for zinc-silver battery comprises a liquid reservoir shell 1 composed of an upper shell and a lower shell, and a liquid reservoir 2 located in the liquid reservoir shell 1 for storing electrolyte 5, a high-pressure gas inlet 3 is provided at the top of the upper shell, and an electrolyte outlet 4 is provided at the bottom of the lower shell. Since the liquid reservoir 2 matches the shape of the liquid reservoir shell 1, and the high-pressure gas inlet 3 is adjacent to the liquid reservoir 2, the structural strength of the product may be problematic in the event of a large pressure shock. Summary of the invention

[0005] The present invention aims to solve the technical problems existing in the known technology and provides a pressure-shock-resistant liquid storage device for a zinc-silver reserve battery under the premise of ensuring that the battery performance is not affected, thereby improving the pressure-shock resistance of the liquid storage device of the zinc-silver reserve battery.

[0006] The technical solution adopted by the present invention is: a pressure-shock-resistant liquid reservoir for zinc-silver reserve batteries, comprising a liquid reservoir shell composed of an upper shell and a lower shell and a liquid reservoir bag located in the liquid reservoir shell for storing electrolyte, a high-pressure gas inlet is provided at the top of the upper shell, an electrolyte outlet is provided at the bottom of the lower shell, and a cavity serving as a peak pressure buffer space is formed at the high-pressure gas inlet of the upper shell of the liquid reservoir shell protruding toward the outer side of the top of the upper shell, so that the high-pressure gas inlet does not contact the liquid reservoir bag.

[0007] The liquid storage shell is made of high-quality carbon structural steel or stainless steel; the liquid storage bag is made of rubber.

[0008] The cavity has a diameter of 25 mm to 32 mm and a height of 1.5 mm to 3 mm.

[0009] The advantages and positive effects of the present invention are:

[0010] 1. Since a buffer space is designed between the reservoir shell and the reservoir bag containing the electrolyte, the peak pressure in the reservoir at the moment of activation can be effectively reduced;

[0011] 2. Since the volume of the buffer space is small, it will not affect the equilibrium pressure in the activated reservoir.

[0012] 3. The product size change of increasing the buffer space of the liquid reservoir is small and has no significant impact on the overall structure of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The present invention is a schematic diagram of the structure of a liquid storage device for a zinc-silver reserve battery in the prior art.

[0014] Figure 2 The present invention is a schematic structural diagram of a pressure-shock-resistant liquid storage device for a zinc-silver reserve battery. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation methods described herein are only used to explain the present invention and are not used to limit the present invention.

[0016] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by terms such as “upper”, “middle”, “lower”, “inside”, “outside”, and “both sides” are based on the orientations or positional relationships shown in the accompanying drawings, and are only simplified descriptions for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] like Figure 2 As shown, the pressure-shock-resistant liquid reservoir for zinc-silver reserve battery of the present invention comprises a liquid reservoir shell 1 composed of an upper shell and a lower shell, and a liquid reservoir 2 located in the liquid reservoir shell 1 for storing an electrolyte 5, a high-pressure gas inlet 3 is provided at the top of the upper shell, an electrolyte outlet 4 is provided at the bottom of the lower shell, and a cavity 6 as a peak pressure buffer space is formed at the high-pressure gas inlet 3 of the upper shell of the liquid reservoir shell 1 protruding toward the outer side of the top of the upper shell, so that the high-pressure gas inlet 3 does not contact the liquid reservoir 2.

[0019] The liquid storage shell 1 is made of high-quality carbon structural steel or stainless steel; the liquid storage capsule 2 is made of rubber.

[0020] The cavity 6 has a diameter of 25 mm to 32 mm and a height of 1.5 mm to 3 mm.

[0021] like Figure 1 The prior art reservoir shell shown has a diameter of 100 mm and a height of 60 mm. The high-pressure gas inlet has a diameter of 12 mm and the electrolyte outlet has a diameter of 10 mm. When the reservoir is activated by a gas generator, the peak pressure in the reservoir is 5.4 MPa.

[0022] like Figure 2 in Figure 1 On the basis of the previous design, a cavity with a diameter of 25mm to 32mm and a height of 1.5mm to 3mm is added to the upper part of the reservoir as a peak pressure buffer space. The peak pressure in the reservoir is 1.7MPa to 2.2MPa. However, due to the small pressure buffer space, the balance pressure in the reservoir basically does not change before and after the change, which will not affect the later performance of the battery, nor the overall structure of the product.

[0023] The present invention can effectively reduce the peak pressure and improve the reliability of the reservoir's resistance to impact pressure by designing a relatively small buffer space between the reservoir shell and the reservoir bag enclosing the electrolyte. At the same time, since the buffer space is relatively small, it will not substantially affect the reservoir's balanced pressure, and thus will not affect the electrolyte distribution inside the battery.

[0024] Although the preferred embodiments of the present invention are described above in conjunction with the accompanying drawings, the present invention is not limited to the above specific embodiments, which are merely illustrative and not restrictive. Under the guidance of the present invention, a person skilled in the art can make many forms without departing from the scope of protection of the present invention and the claims. All of these belong to the protection scope of the present invention.

Claims

1. A pressure-shock-resistant liquid reservoir for a zinc-silver reserve battery, comprising a liquid reservoir housing (1) consisting of an upper housing and a lower housing, and a liquid reservoir (2) located in the liquid reservoir housing (1) for storing an electrolyte (5), wherein a high-pressure gas inlet (3) is provided at the top of the upper housing, and an electrolyte outlet (4) is provided at the bottom of the lower housing, characterized in that: A cavity (6) serving as a peak pressure buffer space is formed at the high-pressure gas inlet (3) of the upper shell of the liquid storage housing (1) and protrudes toward the outer side of the top of the upper shell, so that the high-pressure gas inlet (3) does not contact the liquid storage bag (2).

2. The pressure-shock-resistant liquid storage container for zinc-silver reserve battery according to claim 1, characterized in that: The liquid storage shell (1) is made of high-quality carbon structural steel or stainless steel; the liquid storage capsule (2) is made of rubber.

3. The pressure-shock-resistant liquid storage container for zinc-silver reserve battery according to claim 1, characterized in that: The cavity (6) has a diameter of 25 mm to 32 mm and a height of 1.5 mm to 3 mm.

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