Device for preventing electrolyte of zinc-silver reserve battery from flowing back

Abstract

The utility model discloses a device for preventing electrolyte of a zinc-silver reserve battery from flowing back. The device comprises a shell assembled in a liquid inlet hole, an inner cavity of the shell is arranged in a penetrating mode, a control cylinder is arranged in the shell in a sliding mode, the bottom of the control cylinder is arranged in a closed mode, and an elastic piece is arranged between the control cylinder and the bottom of the shell. The electrolyte is always kept in the cavity of the shell, so that the electrolyte of the single battery can be prevented from flowing out, the electrical property of the battery is improved, the electrical property of the battery is better, the battery has higher reliability in the use process, and the service life of the battery is prolonged to a certain extent.

Description

Technical Field

[0001] The utility model relates to a device for preventing backflow of electrolyte in a zinc-silver reserve battery. Background Art

[0002] The liquid inlet holes of each single cell of the zinc-silver reserve battery are connected through the electrolyte distribution groove, and the electrolyte is absorbed and stored by the porous electrodes and high adsorption diaphragm, thereby realizing the power supply of the battery pack.

[0003] Generally, the size of the electrolyte inlet hole is changed to reduce the backflow of electrolyte from the inlet hole during the inverted storage process or under the action of reverse acceleration; as the inverted storage time of the zinc-silver reserve battery is prolonged after activation, the reverse acceleration magnitude increases and the time is prolonged, a large amount of electrolyte flows back from the single cell, the battery pack cannot work normally or self-discharge occurs between the single cells, resulting in a decrease in battery pack performance. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a device for preventing the backflow of electrolyte in zinc-silver reserve batteries.

[0005] The utility model is achieved through the following technical solutions.

[0006] The utility model provides a device for preventing backflow of electrolyte in a zinc-silver reserve battery. The device comprises a shell assembled in a liquid inlet hole, wherein the inner cavity of the shell is arranged to penetrate through the inner cavity of the shell, a control cylinder is slidably arranged inside the shell, the bottom of the control cylinder is arranged to be closed, and an elastic member is arranged between the control cylinder and the bottom of the shell.

[0007] Preferably, the elastic member is configured as a spring, one end of the spring is connected to the bottom of the control cylinder, and the other end of the spring is connected to the bottom of the inner cavity of the shell.

[0008] Preferably, an arc-shaped clamping block is fixedly connected to the bottom of the control cylinder, and the arc-shaped clamping block is arranged in a semi-spherical shape. The circumference of the outer peripheral side of the plane of the arc-shaped clamping block is greater than the circumference of the outer peripheral side of the control cylinder; an annular step is provided in the middle position of the inner cavity of the shell, the inner diameter of the shell near the open end is smaller than the inner diameter of the shell near the bottom end, and the outer peripheral side of the plane of the arc-shaped clamping block is slidably arranged on the inner side of the outer ring of the annular step.

[0009] Preferably, a washer is sleeved on the control cylinder, and the washer contacts the plane of the arc-shaped clamping block.

[0010] Preferably, a liquid flow channel is opened on the side wall of the control cylinder, and the liquid flow channel is communicated with the inner cavity of the shell.

[0011] Preferably, a fixed cover is fixedly provided at the bottom of the shell. The fixed cover is annular. The outer circumference of the fixed cover is greater than the outer circumference of the shell, and the inner circumference of the fixed cover is smaller than the outer circumference of the annular step.

[0012] Preferably, a plurality of liquid flow channels are provided, and the plurality of liquid flow channels are distributed at equal intervals along the outer circumference of the control cylinder.

[0013] The beneficial effects of the present invention are as follows: when the battery is inverted or subjected to a reverse acceleration test, the zinc-silver reserve battery is activated, and the high-pressure gas generated will push the electrolyte into the inner cavity of the shell, so that the electrolyte is injected into the control cylinder. At the same time, the electrolyte will push the control cylinder, and the spring will be compressed, so that the volume on one side of the open end of the shell cavity becomes larger, and the electrolyte then flows from the liquid flow channel into the outer ring stage of the annular step, thereby increasing the capacity of the stored electrolyte; at the same time, the gasket and the inner cavity of the shell form an elastic seal and press tightly, so that the electrolyte is always kept in the shell cavity, which can prevent the electrolyte of the single cell from flowing out, improve the electrical performance of the battery, make the electrical performance of the battery better, and have strong reliability during use, thereby extending the service life of the battery to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0016] In the figure: 1-housing; 2-control cylinder; 3-liquid flow channel; 4-gasket; 5-spring; 6-fixing cover; 7-arc-shaped block; 8-annular step. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0019] In the examples of this application, refer to Figure 1 and Figure 2, including a shell 1 assembled in the liquid inlet hole, the outer side of the shell 1 is cylindrical, which is convenient for transferring the shell 1 to the liquid inlet hole, the inner cavity of the shell 1 is set through, and an annular step 8 is set in the middle position of the inner cavity of the shell 1, so that the inner diameter of the shell 1 near the open end is smaller than the inner diameter of the shell 1 near the bottom end. A fixing cover 6 is fixedly provided at the bottom of the shell 1, and the fixing cover 6 is set in a circular ring shape. The outer circumference of the fixing cover 6 is greater than the circumference of the outer circle of the shell 1, which is convenient for the overall assembly of the shell 1 to be tightly pressed against the liquid inlet hole.

[0020] In the examples of this application, refer to Figure 1 and Figure 2 A control cylinder 2 is slidingly provided in the inner cavity of the shell 1. The bottom of the control cylinder 2 is closed. The control cylinder 2 is clearance-matched with the inner ring of the annular step 8, which facilitates the sliding of the control cylinder 2 in the inner ring of the annular step 8. A liquid flow channel 3 is opened on the side wall of the control cylinder 2. The liquid flow channel 3 is connected to the interior of the shell 1. There are multiple liquid flow channels 3, and the multiple liquid flow channels 3 are evenly spaced along the outer circumference of the control cylinder 2 to increase the capacity of the electrolyte in the inner cavity of the shell 1.

[0021] In the examples of this application, refer to Figure 1 and Figure 2 The bottom of the control cylinder 2 is integrally connected with an arc-shaped clamping block 7, which is set in a hemispherical shape. The circumference of the plane of the arc-shaped clamping block 7 is greater than the circumference of the outer circumference of the control cylinder 2; the outer peripheral side of the plane of the arc-shaped clamping block 7 is slidably set on the outer ring of the annular step 8 to limit the moving distance of the control cylinder 2.

[0022] In the examples of this application, refer to Figure 1 and Figure 2 A gasket 4 is sleeved on the control cylinder 2. The gasket 4 is made of rubber. The gasket 4 conflicts with the plane of the arc-shaped block 7. At the same time, the outer peripheral side of the gasket 4 elastically presses against the outer ring of the annular step 8, thereby achieving sealing of the bottom of the inner cavity of the shell 1 and preventing the electrolyte from flowing out of the inner cavity of the shell 1.

[0023] In the examples of this application, refer to Figure 1 and Figure 2 The inner circumference of the fixed cover 6 is smaller than the outer circumference of the annular step 8. An elastic member is provided between the control cylinder 2 and the bottom of the outer shell 1. The elastic member is set as a spring 5. One end of the spring 5 abuts against the arc surface of the arc-shaped block 7, and the end of the spring 5 away from the arc-shaped block 7 abuts against the fixed cover 6, which facilitates the assembly of the overall structure.

[0024] The working principle of this embodiment is as follows: when the battery is inverted or subjected to a reverse acceleration test, the zinc-silver reserve battery is activated, and the high-pressure gas generated will push the electrolyte into the inner cavity of the shell 1, so that the electrolyte is injected into the control cylinder 2. At the same time, the electrolyte will push the control cylinder 2, and the spring 5 will be compressed. The volume on one side of the open end of the cavity of the shell 1 becomes larger, and the electrolyte then flows from the liquid flow channel 3 into the outer ring stage of the annular step 8, increasing the capacity of the electrolyte storage; at the same time, the gasket 4 forms an elastic seal with the inner cavity of the shell 1, so that the electrolyte is always kept in the cavity of the shell 1, which can prevent the electrolyte of the single cell from flowing out; when the test is completed, the spring 5 pushes the control cylinder 2 back through its own force, and the electrolyte flows back from the liquid inlet hole, thereby ensuring the electrical performance of the single cell, making the electrical performance of the battery better, and having strong reliability during use, and extending the battery life to a certain extent.

[0025] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made based on the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A device for preventing backflow of electrolyte in a zinc-silver reserve battery, characterized in that: The invention comprises a shell (1) assembled in a liquid inlet hole, wherein the inner cavity of the shell (1) is arranged to penetrate through the inner cavity of the shell (1), a control cylinder (2) is arranged to slide inside the shell (1), the bottom of the control cylinder (2) is arranged to be closed, and an elastic member is arranged between the control cylinder (2) and the bottom of the shell (1).

2. The device for preventing backflow of electrolyte in a zinc-silver reserve battery according to claim 1, wherein: The elastic member is configured as a spring (5), one end of the spring (5) is connected to the bottom of the control cylinder (2), and the other end is connected to the bottom of the inner cavity of the housing (1).

3. The device for preventing backflow of electrolyte in a zinc-silver reserve battery according to claim 1, wherein: The bottom of the control cylinder (2) is fixedly connected with an arc-shaped clamping block (7), which is arranged in a semi-spherical shape. The circumference of the plane outer peripheral side of the arc-shaped clamping block (7) is greater than the circumference of the outer peripheral side of the control cylinder (2); an annular step (8) is arranged in the middle position of the inner cavity of the shell (1), the inner diameter length of the shell (1) near the open end is smaller than the inner diameter length of the shell (1) near the bottom end, and the outer peripheral side of the plane of the arc-shaped clamping block (7) is slidably arranged on the inner side of the outer circle of the annular step (8).

4. A device for preventing backflow of electrolyte in a zinc-silver reserve battery as claimed in claim 3, characterized in that: A washer (4) is sleeved on the control cylinder (2), and the washer (4) is in conflict with the plane of the arc-shaped clamping block (7).

5. The device for preventing backflow of electrolyte in a zinc-silver reserve battery according to claim 3, wherein: A liquid flow channel (3) is provided on the side wall of the control cylinder (2), and the liquid flow channel (3) is communicated with the inner cavity of the shell (1).

6. A device for preventing backflow of electrolyte in a zinc-silver reserve battery as claimed in claim 3, characterized in that: A fixed cover (6) is fixedly provided at the bottom of the housing (1). The fixed cover (6) is annular, and the outer circumference of the fixed cover (6) is greater than the outer circumference of the housing (1), and the inner circumference of the fixed cover (6) is less than the outer circumference of the annular step (8).

7. The device for preventing backflow of electrolyte in a zinc-silver reserve battery according to claim 5, wherein: A plurality of liquid flow channels (3) are provided, and the plurality of liquid flow channels (3) are distributed at equal intervals along the outer circumference of the control cylinder (2).

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