Positive electrode storage device for alkaline zinc-manganese primary battery production

Abstract

The utility model discloses a positive electrode storage device for producing an alkaline zinc-manganese primary battery, which belongs to the technical field of battery production equipment and comprises a tank body, a sealing cover is arranged above the tank body, the tank body is fixedly connected with the sealing cover, a protection module is arranged on the sealing cover, the sealing cover is fixedly connected with the protection module, and a heat insulation module is arranged on the outer wall of the tank body. The heat insulation module comprises a heat insulation plate, a sealing gasket is arranged on a gap between the outer wall of the tank body and the heat insulation plate, the sealing gasket is connected with the outer wall of the tank body and the heat insulation plate, and the tops and the bottoms of the sealing gasket and the heat insulation plate are fixedly connected with the connecting and fixing mechanism. According to the positive electrode storage device for producing the alkaline zinc-manganese primary battery, efficient heat insulation of the outer wall of the tank body is improved by arranging the heat insulation module, and the thermal stability defect existing in the storage technology of the positive electrode material of the alkaline zinc-manganese primary battery is overcome; by arranging the protection module, the electrolyte is prevented from being impacted and damaged, and the safety and the reliability of the whole positive electrode storage device are improved.

Description

Technical Field

[0001] This utility model relates to the field of battery production equipment technology, and in particular to a positive electrode storage device for the production of alkaline zinc-manganese primary batteries. Background Technology

[0002] Battery manufacturing is a complex industrial process involving materials science, chemistry, and engineering. The production process varies depending on the battery type. Alkaline zinc-manganese primary batteries are a common type of dry cell battery, using zinc as the negative electrode and manganese dioxide as the positive electrode. They typically use an alkaline potassium hydroxide solution as the electrolyte and are widely used in electronic products with high safety requirements. Currently, alkaline zinc-manganese primary batteries suffer from problems such as electrolyte evaporation and carbon black leakage during the packaging process, requiring further improvement.

[0003] Chinese patent CN211544478U discloses a positive electrode storage device for alkaline zinc-manganese primary battery production, including a cylinder, a top cover, and moisture-absorbing paper. This invention employs a layered, multi-level sealing protection system, using a composite structure of pure cotton fiber absorbent layer and elastic kraft paper with radial notches to form an adaptive interface seal. It innovatively utilizes a double-layer mounting ring buckle with a double-adhesive strip compression locking mechanism for rapid assembly and disassembly and multi-condition sealing compensation. Integrating moisture-absorbing medium positioning and bonding technology, it constructs a contact-type dynamic dehumidification barrier, ultimately forming a dry storage solution for positive electrode materials with high-frequency opening and closing stability, effectively improving the moisture-proof effect of carbon black and the repeated sealing performance of the container. This patent features a simple structure and ease of use, solving the current sealing problem in carbon black storage. However, it does not address the thermal stability defects inherent in existing alkaline zinc-manganese primary battery positive electrode material storage technologies.

[0004] The thermal stability defects of alkaline zinc-manganese primary battery cathode material storage technology are specifically manifested as follows: Under normal storage conditions, the cathode active material (mainly composed of γ-type electrolytic manganese dioxide) needs to maintain a specific water content (usually controlled at 1.5-3.5 wt%) to maintain the stability of its layered tunnel structure. When the storage environment temperature exceeds the critical threshold (usually >35℃), since the thermal conductivity coefficient of the storage tank material directly affects the internal temperature rise rate, external heat conduction will induce a temperature gradient inside the system, leading to the following chain reaction: external heat is conducted to the interior through the tank wall, the evaporation activation energy of adsorbed water and crystal water in the cathode material decreases, triggering an unsteady diffusion process, resulting in water loss. Water loss will destroy the hydroxylation structure on the surface of manganese dioxide crystals, reducing the kinetic performance of proton insertion / extraction reactions (H). ＋ The diffusion coefficient decreases by approximately 30-50%, increasing the electrode / electrolyte interfacial impedance (measured increase of 20-40 mΩ·cm). 2This triggers the β-MnO2 phase transition, reducing the stability of the discharge plateau (plateau voltage fluctuation > 50mV), thereby decreasing the electrochemical performance of the cathode material. When the material moisture content is below the critical value (<1.2wt%), the local concentration of KOH electrolyte abnormally increases (up to 12mol / L), accelerating the MnO2 disproportionation reaction (3MnO2 + H2O → Mn3O4 + 2OH-). － +O2↑), which leads to a 2-3 times increase in the open-circuit voltage decay rate. Utility Model Content

[0005] The purpose of this invention is to provide a positive electrode storage device for the production of alkaline zinc-manganese primary batteries. By setting up a heat insulation module to improve the efficient heat insulation of the outer wall of the tank, the thermal stability defects of the positive electrode material storage technology for alkaline zinc-manganese primary batteries are solved. By setting up a protection module to prevent the electrolyte from being damaged by impact, the safety and reliability of the entire positive electrode storage device are improved.

[0006] To achieve the above objectives, this utility model provides a positive electrode storage device for the production of alkaline zinc-manganese primary batteries, including a tank body, a cover on the top of the tank body, the tank body and the cover being fixedly connected, a protective module on the cover, the cover and the protective module being fixedly connected, a heat insulation module on the outer wall of the tank body, the heat insulation module including a heat insulation plate, a sealing gasket in the gap between the outer wall of the tank body and the heat insulation plate, the sealing gasket being connected to the outer wall of the tank body and the heat insulation plate respectively, and the top and bottom of the sealing gasket and the heat insulation plate being fixedly connected to a connecting and fixing mechanism.

[0007] Preferably, the connecting and fixing mechanism includes a fixing plate, one end of which is fixedly connected to a sealing gasket, and the other end of which is fixedly connected to an adjusting plate. A pin is provided through the adjusting plate and is slidably connected to the adjusting plate. One end of the pin is fixedly connected to a handle, and the other end of the pin is fixedly connected to a magnet. A first spring is sleeved on the pin, and telescopic rods are provided on both sides of the first spring. One end of the first spring and one end of the telescopic rods are fixedly connected to the adjusting plate, and the other end of the first spring and the telescopic rods are fixedly connected to a magnet.

[0008] Preferably, the connecting and fixing mechanism further includes a connecting plate and a limiting rod. One end of the connecting plate is fixedly connected to the sealing gasket, and the other end of the connecting plate is fixedly connected to the limiting plate. One end of the limiting rod is fixedly connected to the magnet, and the other end of the limiting rod passes through the limiting plate, the baffle, and the positioning block in sequence and is fixedly connected to the bottom plate. The limiting rod is slidably connected to the limiting plate and the positioning block, and the limiting rod is fixedly connected to the baffle.

[0009] Preferably, there are two heat insulation boards, two sealing gaskets, and four connecting and fixing mechanisms.

[0010] Preferably, the dimensions of the outer wall of the tank match those of the heat insulation plate.

[0011] Preferably, the limiting rod is made of iron.

[0012] Preferably, the protection module includes a damping rod, a second spring is provided on the outer sleeve of the damping rod, one end of the damping rod and the second spring are fixedly connected to the cover, and the other end of the damping rod and the second spring are fixedly connected to the protective plate.

[0013] Preferably, a top plate is fixedly provided on the top of the protective plate, and a buffer plate is fixedly provided on the surface of the protective plate.

[0014] Preferably, the surface of the buffer plate has several guide grooves, which are evenly distributed on the surface of the buffer plate.

[0015] Therefore, the positive electrode storage device produced by the above-mentioned alkaline zinc-manganese primary battery has the following beneficial effects:

[0016] (1) By setting up a heat insulation device, the outer wall of the tank is efficiently insulated by the cooperation of the fixed plate, adjusting plate, pin, magnet, first spring, connecting plate, limiting plate, limiting rod, positioning block, baffle, bottom plate and heat insulation plate and sealing gasket. This avoids the water from evaporating and dissipating rapidly when the external temperature of the tank is too high and is transferred to the inside of the tank, which would cause the positive electrode tube to dry out and affect the ion conduction performance of the electrode. This improves the stability of the internal temperature of the tank and ensures that the positive electrode tube contains a certain amount of water to ensure its performance stability.

[0017] (2) By setting up a protection module, the damping rod, protective plate, top plate and second spring can effectively buffer and absorb the impact force of the electrolyte on the cover, avoid the electrolyte from directly hitting the cover and causing damage, and thus prevent the damage of the cover from causing adverse effects on the positive electrode of the alkaline zinc manganese primary battery inside the tank, thereby improving the safety and reliability of the entire positive electrode storage device.

[0018] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the first overall structure of a positive electrode storage device for the production of an alkaline zinc-manganese primary battery according to Embodiment 1 of this utility model;

[0020] Figure 2 This is a schematic diagram of the second overall structure of a positive electrode storage device for producing an alkaline zinc-manganese primary battery according to Embodiment 1 of this utility model;

[0021] Figure 3 This is an enlarged view of point A in Embodiment 1 of the positive electrode storage device for the production of an alkaline zinc-manganese primary battery according to this utility model;

[0022] Figure 4 This is a partially enlarged view of the protection module of Embodiment 1 of the positive electrode storage device for the production of alkaline zinc-manganese primary batteries according to this utility model.

[0023] Figure Labels

[0024] 1. Tank body; 2. Cover; 3. Insulation module; 301. Fixing plate; 302. Adjusting plate; 303. Pin; 304. Magnet; 305. First spring; 306. Connecting plate; 307. Limiting plate; 308. Limiting rod; 309. Positioning block; 310. Baffle plate; 311. Bottom plate; 312. Insulation plate; 313. Sealing gasket; 314. Telescopic rod; 315. Handle; 4. Protection module; 41. Damping rod; 42. Protective plate; 43. Top plate; 44. Second spring; 45. Buffer plate; 46. Flow guide channel. Detailed Implementation

[0025] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0026] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] Example 1

[0028] like Figures 1 to 2 As shown, this utility model provides a positive electrode storage device for the production of alkaline zinc-manganese primary batteries, including a tank 1, a cap 2 on top of the tank 1, and the tank 1 and cap 2 being fixedly connected. The cap 2 is used to seal the top of the tank 1 to prevent electrolyte leakage. A protection module 4 is provided on the cap 2, and the cap 2 and protection module 4 are fixedly connected. The protection module 4 is used to prevent the positive electrode material inside the tank 1 from being damaged by external impact. A heat insulation module 3 is provided on the outer wall of the tank 1 to insulate the tank 1 and improve the temperature stability inside the tank 1.

[0029] The heat insulation module 3 includes two heat insulation plates 312. The outer wall of the tank 1 is sized to match the heat insulation plates 312, providing a preliminary heat insulation barrier for the tank 1. Two sealing gaskets 313 are fixedly installed in the gap between the outer wall of the tank 1 and the heat insulation plates 312. The sealing gaskets 313 are made of silicone, which has good flexibility and sealing performance, and can effectively fill the gap between the heat insulation plates 312 and the outer wall of the tank 1, preventing heat from being transferred through the gap. The top and bottom of the sealing gaskets 313 and the heat insulation plates 312 are fixedly connected to the connecting and fixing mechanisms. There are four connecting and fixing mechanisms, which are used to tightly connect the tank 1, the heat insulation plates 312 and the sealing gaskets 313 to each other, providing efficient heat insulation for the tank 1 and preventing the excessive temperature of the outer wall of the tank 1 from being transferred to the inside of the tank 1 and affecting the electrode performance.

[0030] like Figure 3 As shown, the connecting and fixing mechanism includes a fixing plate 301. One end of the fixing plate 301 is fixedly connected to a sealing gasket 313, and the other end is fixedly connected to an adjusting plate 302. A pin 303 is inserted through the adjusting plate 302, and the pin 303 is slidably connected to the adjusting plate 302, allowing the pin 303 to move freely up and down within a certain range. One end of the pin 303 is fixedly connected to a handle 315, facilitating the operator to move the pin 303; the other end of the pin 303 is fixedly connected to a magnet 304, thereby causing the magnet 304 to move up and down through the movement of the pin 303. A first spring 305 is sleeved on the pin 303, and telescopic rods 314 are provided on both sides of the first spring 305. The pin 303 ensures that the first spring 305 does not rotate during movement, while the telescopic rods 314 ensure that the magnet 304 does not rotate during movement, thus constraining the movement trajectory of the magnet 304. One end of the first spring 305 and the telescopic rod 314 are fixedly connected to the adjusting plate 302, and the other end of the first spring 305 and the telescopic rod 314 are fixedly connected to the magnet 304. The first spring 305 plays a role in buffering and resetting. When the pin 303 drives the magnet 304 to move away from the handle 315, the first spring 305 generates a retracting force, driving the magnet 304 to move closer to the handle 315.

[0031] The connecting and fixing mechanism also includes a connecting plate 306 and limiting rods 308. One end of the connecting plate 306 is fixedly connected to the sealing gasket 313, and the other end is fixedly connected to the limiting plate 307. Two limiting rods 308 are respectively installed on both sides of the limiting plate 307. One end of the limiting rod 308 is fixedly connected to the magnet 304 and can be magnetically attracted to the magnet 304; the other end passes through the limiting plate 307, the baffle 310, and the positioning block 309 in sequence, and is finally fixedly connected to the bottom plate 311. The limiting rods 308 are slidably connected to the limiting plate 307 and the positioning block 309, allowing the limiting rods 308 to slide freely within a certain range, ensuring the smoothness of their movement and the accuracy of their trajectory. However, the fixed connection with the baffle 310 and the bottom plate 311 limits their range of movement and avoids structural failure caused by excessive movement.

[0032] like Figure 4 As shown, the protection module 4 includes a damping rod 41, with a second spring 44 sleeved around it. One end of both the damping rod 41 and the second spring 44 is fixedly connected to the cover 2, and the other end is fixedly connected to the protective plate 42. This design allows the protective plate 42 to transmit the impact force to the second spring 44 when subjected to external force, thus achieving buffering and absorption. Simultaneously, the damping rod 41 inside the second spring 44 moves accordingly, suppressing excessive shaking and repeated oscillation of the second spring 44, thereby improving the stability and reliability of the entire system. A top plate 43 is fixedly installed on the top of the protective plate 42, which enhances the strength and stability of the entire protection module 4. A buffer plate 45 is fixedly installed on the surface of the protective plate 42, which directly contacts potential external impact sources, providing the first line of defense for the positive electrode material inside the tank 1. The surface of the buffer plate 45 is provided with several guide grooves 46. The guide grooves 46 are evenly distributed on the surface of the buffer plate 45. The guide grooves 46 play a guiding role, which can ensure that objects leave the buffer plate 45 smoothly, avoid objects from accumulating on the buffer plate 45, and further enhance the protective effect.

[0033] Working principle: When heat insulation treatment is required for tank 1, firstly, two heat insulation plates 312 are tightly abutted against the outer wall of tank 1, and two sealing gaskets 313 are simultaneously abutted in the gap between the heat insulation plates 312 and the outer wall of tank 1. Then, the handle 315 is pressed towards the limiting plate 307, thereby driving the pin 303 to move. As the pin 303 moves, the magnet 304 moves. When the magnet 304 moves to the position of the limiting plate 307, the magnet 304 uses its magnetism to attract the limiting rod 308. Subsequently, the handle 315 is released, and the first spring 305 uses the retraction force to pull the magnet 304 and the pin 303 away from the limiting plate 307. Driven by the magnet 304, the two limiting rods 308 pass through the limiting plate 307, driving the bottom plate 311 and the baffle plate 310 to move. When the bottom plate 311 and the baffle plate 310 move to the positions of the limiting plate 307 and the positioning block 309 respectively, the entire connection and fixing mechanism tightly connects the heat insulation plate 312, the sealing gasket 313, and the outer wall of the tank 1. When it is necessary to disassemble the heat insulation module 3, move the heat insulation plate 312, which will drive the positioning block 309 to move, pull the limiting rod 308 to separate from the magnet 304, and the sealing gasket 313 can be separated from the heat insulation plate 312 and the outer wall of the tank 1. The heat insulation plate 312 can then be easily removed from the outer wall of the tank 1.

[0034] When an object impacts the battery, it first lands on the buffer plate 45, which initially absorbs the impact force. The remaining impact force is then transferred to the protective plate 42, which in turn transmits the received impact force to the second spring 44. The second spring 44 and the damping rod 41 then complete the buffering and absorption of the impact force. Finally, the falling object slides down the guide channel 46. By setting up the protection module 4, an impact energy gradient dissipation path is constructed, reducing the instantaneous impact force of the electrolyte (peak load ≥1500N) to below 100N. This results in a 3-fold increase in the fatigue life of the cover 2 structure and a reduction in the breakage rate of the alkaline zinc-manganese battery cathode material to 0.15%, achieving non-destructive protection throughout the entire life cycle.

[0035] Therefore, this utility model adopts the above-mentioned positive electrode storage device for alkaline zinc-manganese primary batteries. By setting up a heat insulation module to improve the efficient heat insulation of the outer wall of the tank, it solves the thermal stability defects of the positive electrode material storage technology of alkaline zinc-manganese primary batteries. By setting up a protection module to prevent the electrolyte from being damaged by impact, the safety and reliability of the entire positive electrode storage device are improved.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A positive electrode storage device for the production of alkaline zinc-manganese primary batteries, characterized in that: The device includes a tank body with a cover on top. The tank body and the cover are fixedly connected. The cover is equipped with a protective module and is fixedly connected to the protective module. The outer wall of the tank body is equipped with a heat insulation module, which includes a heat insulation plate. A sealing gasket is provided in the gap between the outer wall of the tank body and the heat insulation plate. The sealing gasket is connected to the outer wall of the tank body and the heat insulation plate respectively. The top and bottom of the sealing gasket and the heat insulation plate are fixedly connected to the connecting and fixing mechanism.

2. The positive electrode storage device for producing an alkaline zinc-manganese primary battery according to claim 1, characterized in that: The connecting and fixing mechanism includes a fixing plate, one end of which is fixedly connected to a sealing gasket, and the other end of which is fixedly connected to an adjusting plate. A pin is provided through the adjusting plate and is slidably connected to the adjusting plate. One end of the pin is fixedly connected to a handle, and the other end of the pin is fixedly connected to a magnet. A first spring is sleeved on the pin, and telescopic rods are provided on both sides of the first spring. One end of the first spring and one end of the telescopic rods are fixedly connected to the adjusting plate, and the other end of the first spring and the telescopic rods are fixedly connected to a magnet.

3. The positive electrode storage device for producing an alkaline zinc-manganese primary battery according to claim 2, characterized in that: The connecting and fixing mechanism also includes a connecting plate and a limiting rod. One end of the connecting plate is fixedly connected to the sealing gasket, and the other end of the connecting plate is fixedly connected to the limiting plate. One end of the limiting rod is fixedly connected to the magnet, and the other end of the limiting rod passes through the limiting plate, the baffle, and the positioning block in sequence and is fixedly connected to the bottom plate. The limiting rod is slidably connected to the limiting plate and the positioning block, and the limiting rod is fixedly connected to the baffle.

4. The positive electrode storage device for producing an alkaline zinc-manganese primary battery according to claim 1, characterized in that: There are two heat insulation boards, two sealing gaskets, and four connecting and fixing mechanisms.

5. The positive electrode storage device for producing an alkaline zinc-manganese primary battery according to claim 1, characterized in that: The dimensions of the outer wall of the tank are matched with those of the heat insulation plate.

6. The positive electrode storage device for producing an alkaline zinc-manganese primary battery according to claim 3, characterized in that: The limit rod is made of iron.

7. The positive electrode storage device for producing an alkaline zinc-manganese primary battery according to claim 1, characterized in that: The protection module includes a damping rod, and a second spring is fitted over the damping rod. One end of both the damping rod and the second spring is fixedly connected to the cover, and the other end of both the damping rod and the second spring is fixedly connected to the protective plate.

8. The positive electrode storage device for producing an alkaline zinc-manganese primary battery according to claim 7, characterized in that: A top plate is fixedly installed on the top of the protective plate, and a buffer plate is fixedly installed on the surface of the protective plate.

9. The positive electrode storage device for producing an alkaline zinc-manganese primary battery according to claim 8, characterized in that: Several flow channels are formed on the surface of the buffer plate, and the flow channels are evenly distributed on the surface of the buffer plate.

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