Miniature double-liquid primary battery salt bridge manufacturing mold

Abstract

The utility model discloses a miniature double-liquid primary battery salt bridge manufacturing mold, which belongs to the technical field of salt bridge manufacturing molds, and comprises a culture dish, the culture dish can be a bisected dish or a quartered dish, silica gel blocks capable of being demolded from the culture dish are arranged on two sides in the culture dish, a forming cavity is arranged between the silica gel blocks on two sides, and the silica gel blocks are arranged in the forming cavity. A solidifiable salt bridge solution is injected into the forming cavity, and after the salt bridge solution is solidified, the silica gel block is removed, so that a single-liquid primary battery or a double-liquid primary battery device is formed immediately. The inner wall of the culture dish is coated with a coating convenient to demould, and the coating can be vegetable oil and the like. The handle is arranged at the top end of the silica gel block, so that the silica gel block is convenient to remove. The silica gel block is tightly attached to the inner wall of the culture dish, so that liquid leakage can be prevented. The silica gel block is made of a neutral material, so that the formed salt bridge can be prevented from influencing experimental data.

Description

Technical Field

[0001] The utility model relates to the technical field of salt bridge manufacturing moulds, in particular to a miniature double-liquid primary battery salt bridge manufacturing mould. Background Art

[0002] High school chemistry textbooks involve single-liquid primary cells and double-liquid primary cells, which are convenient for students to learn and understand. However, the reaction containers of the devices are all beakers, which are large in size, require more electrolyte solutions, and have more consumables, which is not conducive to scientific research. In addition, the electrode distances of the single-cell copper-zinc primary cell and the double-cell copper-zinc primary cell are not consistent, which affects the intensity of the current and the experimental conclusions are not rigorous. In addition, the salt bridge is a U-tube salt bridge. Due to its small cross-sectional area and long length, the battery resistance is large, resulting in a lower current for the double-liquid primary cell than the single-liquid primary cell; and the U-tube salt bridge is large in size and has more consumables; in the conditional exploration experiment of the primary cell improvement, multiple groups of experiments use the same U-tube salt bridge. As the use time increases, the KCl in the salt bridge will be continuously consumed, and the conductivity will decrease. Utility Model Content

[0003] In order to overcome the defects of the prior art, the technical problem to be solved by the utility model is to provide a mold for manufacturing a salt bridge of a micro double-liquid primary battery.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a micro double-liquid primary battery salt bridge production mold, comprising a culture dish, wherein silicone blocks that can be demoulded from the culture dish are arranged on both sides of the culture dish, a molding cavity is arranged between the silicone blocks on both sides, and a solidifiable salt bridge solution is injected into the molding cavity.

[0006] An optimal technical solution of the utility model is that the inner wall of the culture dish is coated with a coating which facilitates demoulding.

[0007] A preferred technical solution of the utility model is that the coating is vegetable oil.

[0008] An optimal technical solution of the utility model is that a handle is provided on the top of the silica gel block.

[0009] A preferred technical solution of the utility model is that the silica gel block is tightly fitted to the inner wall of the culture dish.

[0010] An optimal technical solution of the present utility model is that the silica gel block is made of neutral material.

[0011] The beneficial effects of the utility model are:

[0012] The utility model provides a micro double-liquid primary battery salt bridge production mold, which uses a culture dish as a container for the electrolyte solution for the primary battery teaching experiment, realizes the effect of micro-quantitative experiment, and greatly reduces the consumables such as electrolyte solution and electrode rods for the experiment. And by using a self-made salt bridge mold, the batch production of culture dishes with salt bridges of various specifications is realized, which greatly reduces the consumables for the preparation of the salt bridge, reduces the resistance of the salt bridge part, and creates the possibility for the exploratory experiment based on the working principle of the primary battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of a mold for making a salt bridge of a micro double-liquid primary battery provided by a specific embodiment of the utility model;

[0014] In the figure:

[0015] 1. Petri dish; 2. Silicone block; 3. Molding cavity; 4. Handle. DETAILED DESCRIPTION

[0016] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0017] As shown in the figure, this embodiment provides a micro dual-liquid primary battery salt bridge production mold, including a culture dish 1, which can be a two-piece dish or a four-piece dish. The culture dish 1 is provided with silicone blocks 2 that can be demoulded from the culture dish 1 on both sides, and a molding cavity 3 is provided between the silicone blocks 2 on both sides. A solidifiable salt bridge solution is injected into the molding cavity 3. After the salt bridge solution solidifies, the silicone block 2 is removed to instantly form a single-liquid primary battery or a dual-liquid primary battery device. The inner wall of the culture dish 1 is coated with a coating that is easy to demould, and the coating can be vegetable oil or the like. A handle 4 is provided on the top of the silicone block 2 to facilitate the removal of the silicone block 2. The silicone block 2 fits tightly with the inner wall of the culture dish 1 to prevent leakage. The silicone block 2 is a neutral material to prevent the formed salt bridge from affecting the experimental data.

[0018] The specific production method is:

[0019] Step 1: Choose a 90mm quarter-dish as the mold because the specifications of the quarter-dish are the same as those of the half-dish, and the thickness of the middle partition is also the same as that of the half-dish. The mold can fit perfectly with the half-dish and is not prone to leakage.

[0020] Step 2: Prepare the mold silicone. 100g silicone + 2g curing agent, use a glass stick to glue it evenly.

[0021] Step 3: Pour the prepared silicone into a 90mm quartered dish. Apply vegetable oil to the surface of the quartered dish before use to make it easier to demold the mold. Let it stand at room temperature for 2 hours.

[0022] Step 4: Use the discarded silicone cut previously as handle 4 to facilitate mold demoulding. It can be used repeatedly.

[0023] Step 5: After the silicone is formed, use a knife to cut the silicone mold along the middle line, and cut off 1 cm (or other specifications) from the middle with a knife according to the actual experimental needs to form a molding cavity 3. The salt bridge mold made by this method can be used to make two dual-liquid primary cells with salt bridges.

[0024] Step 6: Soak the silicone mold in clean water for 24 hours to make the mold neutral. During this period, the water needs to be changed several times.

[0025] Step 7: Select a salt bridge mold of appropriate specifications (width 1 cm, 2 cm, etc.), pour the prepared salt bridge solution into the salt bridge mold while it is hot, and after cooling and shaping, remove the salt bridge mold to form the desired single-liquid primary battery and double-liquid primary battery device.

[0026] The present invention is described by preferred embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein, and other embodiments falling within the claims of this application are within the scope of protection of the present invention.

Claims

1. A mold for making a salt bridge of a micro double-liquid primary battery, characterized in that: The invention comprises a culture dish (1), wherein silicone blocks (2) capable of being demoulded from the culture dish (1) are arranged on both sides of the culture dish (1), a molding cavity (3) is arranged between the silicone blocks (2) on both sides, and a solidifiable salt bridge solution is injected into the molding cavity (3).

2. The micro double-liquid primary battery salt bridge production mold according to claim 1, characterized in that: The inner wall of the culture dish (1) is coated with a coating that facilitates demoulding.

3. The micro double-liquid primary battery salt bridge production mold according to claim 2, characterized in that: The coating is vegetable oil.

4. The micro double-liquid primary battery salt bridge production mold according to claim 3 is characterized by: A handle (4) is provided on the top of the silica gel block (2).

5. The micro double-liquid primary battery salt bridge production mold according to claim 1, characterized in that: The silica gel block (2) is tightly fitted to the inner wall of the culture dish (1).

6. The micro double-liquid primary battery salt bridge production mold according to claim 1, characterized in that: The silica gel block (2) is made of neutral material.

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