A resistance testing device for negative zinc paste of alkaline battery

Abstract

The utility model discloses a kind of resistance testing devices of alkaline battery negative pole zinc paste, it is a sealed storage tank, it includes storage barrel, bucket cover and two electrodes;Storage barrel and bucket cover are both insulating products;The inner chamber of storage barrel is as zinc paste storage cavity;Bucket cover detachably fixed cover is located at the top of storage barrel, and the sealing of zinc paste storage cavity is carried out;Sealing washer is equipped at the connecting position of bucket cover and storage barrel;Two electrodes are respectively inserted and fixed on sealed storage tank;The inner end of each electrode is inserted into zinc paste storage cavity, and the outer end of electrode is all extended from the sealed storage tank.The utility model can directly, quickly measure the internal resistance of the measured alkaline battery negative pole zinc paste, realize the merit and shortcoming of directly evaluating zinc paste, avoid the trouble and waste of assembling into battery;Moreover, it provides airtight storage space for zinc paste, avoids zinc paste and air long-time contact to occur chemical reaction and influence the accuracy of measurement result;It is easy to operate.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a resistance testing device for zinc paste on the negative electrode of an alkaline battery. Background Technology

[0002] As a widely used chemical power source, the electrical properties of the zinc paste, the negative electrode material of alkaline batteries, play a crucial role in battery performance, with zinc paste resistance being an important indicator of conductivity. However, existing technologies have limitations in the process of adjusting zinc paste formulations. Currently, most methods indirectly evaluate the quality of zinc paste formulations by testing the battery's internal resistance. This indirect evaluation method is not only cumbersome but also time-consuming and labor-intensive, making it difficult to quickly and accurately optimize the zinc paste formulation, thus affecting battery design optimization, efficiency improvement, and lifespan extension. Therefore, there is an urgent need for a method and device that can directly, quickly, and accurately measure zinc paste resistance to effectively guide the adjustment of zinc paste formulations and ultimately improve the overall performance of batteries. Utility Model Content

[0003] The purpose of this invention is to provide a resistance testing device for zinc paste on the negative electrode of an alkaline battery, which can be used to directly, quickly and accurately measure the resistance of the zinc paste.

[0004] The technical solution to achieve the purpose of this utility model is: a resistance testing device for zinc paste of alkaline battery negative electrode, which is a sealed storage tank, including a storage bucket, a lid and two electrodes; the storage bucket and the lid are both insulating products; the inner cavity of the storage bucket serves as a zinc paste storage cavity; the lid is detachably fixedly placed on the top of the storage bucket to seal the zinc paste storage cavity; a sealing gasket is provided at the connection position between the lid and the storage bucket; the two electrodes are respectively inserted and fixed on the sealed storage tank; the inner end of each electrode extends into the zinc paste storage cavity and the outer end of each electrode extends out of the sealed storage tank.

[0005] The resistance testing device for alkaline battery negative electrode zinc paste of this invention can directly and quickly measure the internal resistance of the alkaline battery negative electrode zinc paste under test. By comparing the resistance with that of the original alkaline battery negative electrode zinc paste, the quality of the alkaline battery negative electrode zinc paste under test can be directly evaluated, avoiding the trouble and waste of assembling the battery. Moreover, the resistance testing device not only provides a sealed storage space for the alkaline battery negative electrode zinc paste under test, avoiding side reactions caused by prolonged contact between the zinc paste and air, which would lead to unstable resistance and affect the accuracy of the measurement results, but also fixes two electrodes to the sealed storage container, so that the two jaws of the internal resistance meter can clamp the two electrodes respectively for resistance testing. After each test, the inner end of the electrode only needs to be cleaned and it can be reused, avoiding the inconvenience of repeatedly inserting and removing the electrode.

[0006] Furthermore, the outer edge of the lid has an annular lower flange, the inner circumferential wall of which is threadedly connected to the outer circumferential wall of the storage tank, resulting in not only a good sealing effect but also convenient operation. Furthermore, both electrodes are mounted at the same end of the sealed storage tank. Compared to having the two electrodes mounted at opposite ends of the sealed storage tank, mounting both electrodes at the same end of the sealed storage tank resulted in more stable resistance, as observed in testing.

[0007] Furthermore, the sealed storage tank is provided with two electrode mounting holes, and the two electrodes are respectively fixedly inserted into two rubber plugs, which are then installed in the corresponding electrode mounting holes. The rubber plugs can improve the sealing effect.

[0008] Furthermore, the electrode is a copper needle. Even further, the electrode is a copper needle used in the negative electrode current collector of an alkaline battery. Using copper needles, particularly those used in the negative electrode current collector of an alkaline battery, simulates the working conditions of copper needles and zinc paste during the operation of an alkaline battery, and more accurately reflects the actual performance of different zinc paste formulations within an alkaline battery. Simultaneously, the shape and size of the zinc paste storage cavity are adapted to the negative electrode zinc paste filling space inside the alkaline battery; the depth to which the electrode is inserted into the negative electrode zinc paste is consistent with the depth to which the copper needle of the negative electrode current collector of the alkaline battery is inserted into the zinc paste. In this case, the zinc paste resistance detection data will more closely approximate the resistance effect during actual use. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the resistance testing device for the zinc paste of the negative electrode of the alkaline battery described in Example 1; Figure 2 This is a schematic diagram of the resistance testing device for the zinc paste negative electrode of the alkaline battery described in Example 2. Detailed Implementation

[0010] The preferred embodiment of the resistance testing device for the negative electrode zinc paste of the alkaline battery of this utility model is described in detail below with reference to the accompanying drawings. Example 1

[0011] like Figure 1 As shown, a resistance testing device for zinc paste, the negative electrode of an alkaline battery, is a sealed storage container, comprising a storage bucket 10, a lid 20, and two electrodes 30. Both the storage bucket 10 and the lid 20 are insulating materials. The inner cavity of the storage bucket 10 serves as a zinc paste storage cavity 40. The lid 20 is detachably fixed to the top of the storage bucket 10, sealing the zinc paste storage cavity 40. A sealing gasket 50 is provided at the connection between the lid 20 and the storage bucket 10. The two electrodes 30 are respectively inserted and fixed onto the sealed storage container. The inner end of each electrode 30 extends into the zinc paste storage cavity 40, and the outer end of each electrode 30 extends out of the sealed storage container. The electrode 30 is a copper needle used as the negative electrode current collector of an alkaline battery; The two electrodes 30 are inserted and fixed at the same end (specifically, the top) of the sealed storage tank. Example 2

[0012] like Figure 2 As shown, the resistance testing device for the alkaline battery negative electrode zinc paste in Example 2 differs from that in Example 1 only in that the two electrodes 30 are respectively inserted and fixed at both ends (i.e., the top and bottom ends) of the sealed storage tank.

[0013] In use, the prepared alkaline battery negative electrode zinc paste is filled into the zinc paste storage cavity 40 of the storage tank 10, and then the sealing gasket 50 is installed and the lid 20 is closed, thereby sealing the alkaline battery negative electrode zinc paste to be tested in the sealed storage tank. At this time, the inner end of each electrode 30 will be inserted into the negative electrode zinc paste in the zinc paste storage cavity 40. The two jaws of the internal resistance meter clamp the outer ends of the two electrodes 30 respectively, and the resistance of the alkaline battery negative electrode zinc paste to be tested is detected by powering on.

[0014] The resistance testing devices for alkaline battery negative electrode zinc paste described in Examples 1 and 2 were used to test the resistance of the same batch of alkaline battery negative electrode zinc paste. The resistance data at different times are listed below (see Table 1). Table 1

[0015] As can be seen from Table 1, the stability of the resistance data measured in Example 1 is better than that in Example 2. Therefore, it is preferable that the two electrodes are installed at the same end of the sealed storage tank.

[0016] Meanwhile, the resistance testing devices for the negative electrode zinc paste of alkaline batteries in Examples 1 and 2 have the following advantages: (1) They can directly and quickly measure the internal resistance of the negative electrode zinc paste of the alkaline battery to be tested, and by comparing it with the resistance of the negative electrode zinc paste of the alkaline battery before the improvement, they can directly evaluate the quality of the negative electrode zinc paste of the alkaline battery to be tested, avoiding the trouble and waste of assembling the battery; (2) They can provide a sealed storage space for the negative electrode zinc paste of the alkaline battery to be tested, avoiding the side reaction caused by the zinc paste coming into contact with the air for a long time, which would lead to unstable resistance and affect the accuracy of the measurement results; (3) The two jaws of the internal resistance meter can clamp the two electrodes 30 respectively to perform the resistance test. After each test, the inner end of the electrode 30 only needs to be cleaned before it can be reused, avoiding the inconvenience of repeatedly plugging and unplugging the electrode 30; (4) The electrode 30 uses copper needles, especially copper needles used for the negative electrode current collector of alkaline batteries, which can simulate the working conditions of copper needles and zinc paste during the working process of alkaline batteries, and can more accurately reflect the actual use effect of different zinc paste formulations in alkaline batteries.

[0017] Of course, as long as the material of electrode 30 meets the requirements of "good conductivity and good electrochemical stability, and does not undergo chemical reaction in zinc paste and its environment (if any)," the quality of the zinc paste of the alkaline battery negative electrode under test can be directly evaluated by comparing its resistance with that of the zinc paste of the alkaline battery negative electrode before the improvement.

[0018] Preferably, such as Figure 1 , Figure 2 As shown, the outer edge of the bottom of the lid 20 has an annular lower flange 21. The inner circumferential wall of the annular lower flange 21 is threadedly connected to the outer circumferential wall of the storage bucket 10, which not only provides a good sealing effect but also facilitates operation. Of course, the annular lower flange 21 of the lid 20 and the storage bucket 10 can also be fixedly connected by other existing fixing methods (e.g., tight fit); or, the bottom of the lid 20 is provided with a groove for the upper edge of the storage bucket 10 to be inserted and achieve a tight fit, and the fixed connection is achieved by the fit between the upper edge of the storage bucket 10 and the groove.

[0019] Preferably, such as Figure 1 , Figure 2 As shown, the sealed storage tank has two electrode mounting holes 60. The two electrodes 30 are respectively fixedly inserted into two rubber plugs 70 (e.g., silicone plugs), and the rubber plugs 70 are then installed in the corresponding electrode mounting holes 60. The rubber plugs 70 can improve the sealing effect.

[0020] Preferably, the shape and size of the zinc paste storage cavity 40 are adapted to the negative electrode zinc paste filling space inside the alkaline battery; the depth to which the copper needle 30 is inserted into the negative electrode zinc paste is consistent with the depth to which the copper needle of the negative electrode current collector of the alkaline battery is inserted into the zinc paste. In this case, the zinc paste resistance detection data will be closer to the resistance effect during actual use.

[0021] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent process transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A resistance testing device for zinc paste on the negative electrode of an alkaline battery, characterized in that: It is a sealed storage tank, including a storage bucket, a lid and two electrodes; the storage bucket and lid are both insulating products; the inner cavity of the storage bucket serves as a zinc paste storage cavity; The lid is detachably fixed to the top of the storage tank to seal the zinc paste storage cavity; a sealing gasket is provided at the connection between the lid and the storage tank; the two electrodes are respectively inserted and fixed to the sealed storage tank; the inner end of each electrode extends into the zinc paste storage cavity and the outer end of each electrode extends out of the sealed storage tank.

2. The resistance testing device for the zinc paste of the negative electrode of an alkaline battery according to claim 1, characterized in that: The bottom edge of the lid has an annular lower flange, and the inner peripheral wall of the annular lower flange is threadedly connected to the outer peripheral wall of the storage bucket.

3. The resistance testing device for the zinc paste of the negative electrode of an alkaline battery according to claim 1, characterized in that: The two electrodes are mounted at the same end of the sealed storage tank.

4. The resistance testing device for the zinc paste of the negative electrode of an alkaline battery according to claim 1, characterized in that: The sealed storage tank is provided with two electrode mounting holes. The two electrodes are respectively fixedly inserted into two rubber plugs, and the rubber plugs are then installed in the corresponding electrode mounting holes.

5. The resistance testing device for zinc paste on the negative electrode of an alkaline battery according to claim 1, characterized in that: The electrode is a copper needle.

6. The resistance testing device for the zinc paste of the negative electrode of an alkaline battery according to claim 5, characterized in that: The electrode is a copper needle used as the negative electrode current collector in an alkaline battery.

7. The resistance testing device for the zinc paste of the negative electrode of an alkaline battery according to claim 1, characterized in that: The shape and size of the zinc paste storage cavity are adapted to the negative electrode zinc paste filling space inside the alkaline battery; the depth to which the electrode is inserted into the negative electrode zinc paste is consistent with the depth to which the copper needle of the negative electrode current collector of the alkaline battery is inserted into the zinc paste.

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