Electrochromic electric quantity indicating device for dry battery
By integrating an electrochromic module and a membrane switch into the dry cell battery, the problem of distinguishing between new and old dry cell batteries and low power is solved, providing a low-cost, low-energy power indication function.
Patent Information
- Application Number
- CN202423284020.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2034-12-30
AI Technical Summary
In daily use of dry cell batteries, it is difficult to distinguish between new and old batteries and to determine whether the charge is sufficient, and existing dry cell batteries cannot integrate low-energy power display devices.
An electrochromic power indicator for dry cell batteries was designed, consisting of an electrochromic module, an insulating sheet, a membrane switch, and electrode connection terminals. Pressing the membrane switch causes the electrochromic module to change color, thus indicating the power level.
It achieves power indication function without increasing the production cost of dry cell batteries, and does not continuously consume power. It has a simple structure and low cost.
Smart Images
Figure CN223897558U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an electrochromic power indicator for dry batteries, specifically an electrochromic module, an insulating sheet, a membrane switch attached to the insulating sheet, and an electrode connection terminal. By pressing the membrane switch attached to the insulating sheet, the color of the electrochromic module can change. The remaining power in the dry battery can be determined based on the color change of the electrochromic module, thus serving as an electrochromic power indicator for dry batteries. Background Technology
[0002] Dry cell batteries are chemical batteries that use a paste-like electrolyte to generate direct current. They are commonly used batteries in daily life.
[0003] Even in an era where lithium batteries are ubiquitous, dry cell batteries still play an irreplaceable role in certain specific scenarios, such as low-power devices, TV remotes, and children's toys. These devices typically do not require high-energy-density or long-life batteries. Dry cell batteries perform exceptionally well in these situations because they are convenient and quick to use, requiring no charging and simply needing to be replaced. Furthermore, the manufacturing process of dry cell batteries is relatively simple and cost-effective, especially in disposable devices, where they offer greater cost-effectiveness.
[0004] In the daily use of dry cell batteries, we often encounter the following problems: when replacing dry cell batteries of the same model, we often mix up the old and new dry cell batteries and cannot distinguish which is new and which is old; when using dry cell batteries that have been stored for a period of time and have been unpacked, we cannot confirm whether the dry cell batteries have sufficient power.
[0005] For dry cell battery manufacturers, the manufacturing cost and selling price of dry cell batteries, as well as the limitations of their power capacity and non-rechargeable nature, make it impossible to install power display devices that require continuous power consumption, similar to those used in lithium batteries or other rechargeable power sources, on dry cell batteries.
[0006] Developing a low-power display device that does not require continuous power consumption is key to solving the aforementioned problems encountered when using dry cell batteries in daily life.
[0007] Electrochromism refers to the phenomenon where the optical properties of a material, such as color, transmittance, and reflectance, undergo stable and reversible changes under the influence of an applied electric field. Materials exhibiting electrochromic properties are called electrochromic materials, and display devices that use electrochromic materials as functional materials are called electrochromic display devices.
[0008] Electrochromic display devices consume little power, require low driving voltage, and have a relatively simple manufacturing process. They can be produced using simple processes such as screen printing, inkjet printing, and coating, eliminating the need for complex equipment, cleanrooms, and processes required for LCD production, thus offering a significant cost advantage. Electrochromic display devices have demonstrated unique advantages in the field of disposable, low-cost displays, such as disposable medical devices and high-end packaging. However, there are currently no observed applications of electrochromic display devices for dry cell battery power display. Summary of the Invention
[0009] To address the aforementioned problems encountered during the daily use of dry cell batteries, this utility model provides an electrochromic power indicator for dry cell batteries. This electrochromic power indicator comprises an electrochromic module, an insulating sheet, a membrane switch attached to the insulating sheet, and electrode connection terminals. By pressing the membrane switch attached to the insulating sheet on the electrochromic power indicator, the color of the electrochromic module changes. Based on the color change of the electrochromic module, the remaining power in the dry cell battery can be determined, thus serving as a power indicator for the dry cell battery.
[0010] The technical solution adopted by this utility model to solve its technical problem is: an electrochromic power indicator for dry cell batteries. This electrochromic power indicator for dry cell batteries consists of an electrochromic module, an insulating sheet, a membrane switch attached to the insulating sheet, and electrode connection terminals. By pressing the membrane switch attached to the insulating sheet on the electrochromic power indicator for dry cell batteries, the color of the electrochromic module changes. Based on the color change of the electrochromic module, the remaining power in the dry cell battery can be determined, thus serving the function of indicating the power level of the dry cell battery.
[0011] The electrochromic power indicator for dry cell batteries has an electrochromic module that can be either a multi-layer or a single-layer electrochromic structure. The multi-layer electrochromic module consists of a base electrode, an ion storage layer, an electrolyte layer, an electrochromic layer, and a transparent electrode. The single-layer electrochromic module consists of a base electrode, an electrochromic layer, and a transparent electrode. The base electrode can be one of a metal foil, a transparent conductive film with one side conductive, or an opaque conductive film with one side conductive.
[0012] The electrode connection end of the electrochromic power indicator for the dry cell battery is a metal sheet, or an electrode made by printing a conductive material on an insulating sheet. The end of the electrode connection end has a metal ring that connects to the positive metal cap of the dry cell battery, or the end of the electrode connection end does not have a metal ring that connects to the positive metal cap of the dry cell battery.
[0013] The electrochromic power indicator for dry cell batteries has an isolation ring attached to an insulating sheet in its membrane switch. The isolation ring is a rubber ring formed by screen printing, inkjet printing or dispensing of liquid rubber, or an elastic ring made of a hot-melt material.
[0014] The beneficial effects of this utility model are as follows:
[0015] 1) The electrochromic power indicator for dry cell batteries has a simple structure. It can be directly connected to the positive metal cap of the dry cell battery through the metal ring at the end of the electrode connection end, or the end of the electrode connection end can be directly welded to the positive metal cap of the dry cell battery. It can be used directly without changing the original structure of the dry cell battery.
[0016] 2) This electrochromic power indicator for dry cell batteries uses a low-cost electrochromic module as the power indicator display, realizing the power indicator function of dry cell batteries without significantly increasing the production cost of dry cell batteries.
[0017] 3) The electrochromic power indicator for dry cell batteries is equipped with a membrane switch. When the membrane switch is not pressed, the electrochromic module will not continuously consume the power of the dry cell battery, ensuring that the power of the dry cell battery is not excessively consumed by the power indicator.
[0018] 4) The isolating ring in the membrane switch of the electrochromic power indicator device for dry batteries attached to the insulating sheet is a rubber ring formed by liquid rubber through screen printing, inkjet printing or dispensing, or an elastic ring made of hot melt material, which has a great cost advantage compared with traditional membrane switches. Attached Figure Description
[0019] The present invention will be further described below with reference to the accompanying drawings.
[0020] Figure 1 This is a schematic diagram of an electrochromic power indicator for dry batteries, wherein the end of the electrode connection has a metal ring that connects to the metal cap of the positive electrode of the dry battery.
[0021] Figure 2 This is a schematic diagram of an electrochromic power indicator for dry batteries, wherein the end of the electrode connection does not have a metal ring that connects to the metal cap of the positive electrode of the dry battery.
[0022] Figure 3 This is a flowchart illustrating the manufacturing process of the electrochromic power indicator device for dry batteries of this invention, which uses an electrochromic module with a multi-layer color-changing structure.
[0023] Figure 4 This is a schematic diagram of the multi-layer color-changing electrochromic module used in the electrochromic power indicator device for dry batteries of this utility model.
[0024] Figure 5 This is a flowchart illustrating the manufacturing process of the electrochromic power indicator device for dry batteries of this invention, which uses an electrochromic module with a single-layer color-changing structure.
[0025] Figure 6 This is a schematic diagram of the single-layer color-changing electrochromic module used in the electrochromic power indicator device for dry batteries of this utility model.
[0026] Figure 7 This is a schematic diagram showing that the end of the electrode connection terminal of the electrochromic power indicator device for dry batteries of this utility model is directly connected to the metal cap of the positive electrode of the dry battery.
[0027] Figure 8 The flowchart shows the installation of the electrochromic power indicator device for dry batteries, which has a metal ring at the end of the electrode connection terminal that connects to the metal cap of the positive electrode of the dry battery, on the dry battery.
[0028] Figure 9 The flowchart illustrates the installation of the electrochromic power indicator for dry batteries, where the electrode connection end does not have a metal ring that connects to the metal cap of the positive electrode of the dry battery.
[0029] Figure 10 This is a schematic diagram showing the connection between the electrochromic power indicator for dry cell batteries of this invention, which uses an electrochromic module with a substrate electrode that is either a transparent conductive film or an opaque conductive film that is conductive on one side only, and the negative terminal of the dry cell battery.
[0030] Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 Each part uses a unified numbering system. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10The same number corresponds to the same structure or the same structure. 1. Base electrode, 2. Ion storage layer, 3. Insulating sheet, 4. Electrode connection terminal, 5. Metal ring connected to the metal cap of the positive electrode of the dry cell, 6. Transparent electrode substrate, 7. Transparent conductive material layer, 8. Electrode lead, 9. Electrochromic layer, 10. Isolation ring, 11. Electrolyte layer, 12. Electrochromic layer, 13. Metal cap of the positive electrode of the dry cell, 14. Electrochromic module with multi-layer color-changing structure, 15. Electrochromic module with single-layer color-changing structure, 16. Negative electrode of the dry cell, 17. Transparent graphic window or hollow graphic window, 18. Color label, 19. Indication text, 20. Membrane switch position indicator, 21. Positive electrode of the dry cell, 22. Outer packaging film of the dry cell, 23. Conductive tape, 24. Membrane switch attached to the insulating sheet. Detailed Implementation
[0031] The electrochromic power indicator for dry cell batteries of this utility model will be further described in detail below with reference to the accompanying drawings. This utility model includes, but is not limited to, the following embodiments.
[0032] This utility model of an electrochromic power indicator for dry batteries consists of an electrochromic module, an insulating sheet 3, a membrane switch 24 attached to the insulating sheet, and an electrode connection terminal 4. Figure 1 , Figure 2 As shown. The electrode connection end 4 has a metal ring 5 that connects to the positive metal cap of the dry cell battery, as shown. Figure 1 As shown, or without a metal ring, such as Figure 2 As shown. The electrochromic module is either a multi-layered electrochromic module 14 or a single-layered electrochromic module 15, as shown. Figure 1 , Figure 2 , Figure 3 , Figure 5 As shown.
[0033] By pressing the membrane switch 24 attached to the insulating sheet on the electrochromic power indicator for dry batteries, the color of the electrochromic module can change. The remaining power in the dry battery can be determined based on the color change of the electrochromic module, thus serving as a dry battery power indicator.
[0034] Example 1: The present invention relates to an electrochromic power indicator for dry batteries using an electrochromic module with a multi-layer color-changing structure.
[0035] Specific implementation steps:
[0036] Step 1: Cut the base electrode 1 into the required shape, such as... Figure 3As shown in Figure A, the substrate electrode 1 can be one of a metal foil, a transparent conductive film with single-sided conductivity, or an opaque conductive film with single-sided conductivity. In this embodiment, we use a thin steel sheet with a thickness of 0.02 mm as the substrate electrode 1.
[0037] An ion storage layer 2 is prepared on a substrate electrode 1 using methods such as blade coating, plating, or screen printing. If the substrate electrode 1 is a transparent conductive film with conductivity on one side or an opaque conductive film with conductivity on one side, then the ion storage layer 2 is prepared on the conductive side of the substrate electrode 1. Figure 3 As shown in Figure B. In this embodiment, the ion storage layer 2 is a film layer formed by coating and curing nano-Prussian blue aqueous slurry.
[0038] In actual production, an ion storage layer 2 can also be prepared on the substrate electrode 1 first, and then cut into the required shape.
[0039] Step 2: Use adhesive to fix the insulating sheet 3 onto the base electrode 1 or the ion storage layer 2, such as... Figure 3 As shown in Figure C. If the base electrode 1 is a transparent conductive film that is conductive on one side or an opaque conductive film that is conductive on one side, then the insulating sheet 3 is fixed on the conductive surface of the base electrode 1 or the ion storage layer 2. The insulating sheet 3 is a non-conductive plastic film. In this embodiment, a PET (polyethylene terephthalate) film with a thickness of 50 micrometers is used as the insulating sheet 3.
[0040] Step 3: Prepare electrode connection terminals 4 on insulating sheet 3, such as... Figure 3 As shown in Figure D. The electrode connection end 4 is a metal sheet or an electrode made by printing a conductive material, such as carbon paste, silver paste, or copper paste, onto an insulating sheet. The electrode connection end 4 has a metal ring 5 at its end that connects to the positive metal cap of the dry cell battery, or the electrode connection end 4 may not have a metal ring at its end that connects to the positive metal cap of the dry cell battery. In this embodiment, a thin steel sheet cut to the required shape and with a thickness of 0.02 mm is used as the electrode connection end 4. The electrode connection end 4 has a metal ring 5 at its end that connects to the positive metal cap of the dry cell battery. The metal ring 5 that connects to the positive metal cap of the dry cell battery is integrated with the electrode connection end 4, and the electrode connection end 4 is fixed to the insulating sheet 3 with double-sided adhesive.
[0041] Step 4: Prepare an isolation ring 10 on the insulating sheet 3 and the electrode connection end 4, such as... Figure 3 As shown in Figure E, the isolation ring 10 is a rubber ring formed by screen printing, inkjet printing, or dispensing of liquid rubber or silicone rubber, or an elastic ring prepared using a hot-melt material. In this embodiment, the isolation ring 10 is prepared by screen printing liquid rubber. After the screen-printed liquid rubber cures, an elastic isolation ring 10 is obtained that is attached to the insulating sheet 3 and the electrode connection end 4.
[0042] Step 5: On the transparent electrode substrate 6, prepare a transparent conductive material layer 7, such as... Figure 3 As shown in F and G, the transparent electrode substrate 6 and the transparent conductive material layer 7 constitute the transparent electrode of the electrochromic module. The transparent electrode substrate 6 can be a PET (polyethylene terephthalate) film, a PEN (polyethylene naphthalate) film, a PI (polyimide) film, etc.; the transparent conductive material layer 7 can be one, two, or a mixture of two or more of ITO (indium tin oxide), FTO (fluorine-doped tin oxide), AZO (aluminum-doped zinc oxide), silver nanowires, copper nanowires, graphene, etc. In this embodiment, a PET-ITO conductive film with a sheet resistance of 25 ohm / sq and a thickness of 75 micrometers is used as the transparent electrode, that is, the transparent electrode substrate 6 of the transparent electrode is a PET film and the transparent conductive material layer 7 is ITO.
[0043] Step 6: Fabricate electrode leads 8 on the transparent conductive material layer 7 of the transparent electrode, such as... Figure 3 As shown in H, conductivity is improved. Electrode leads 8 can be made from materials with good conductivity, such as carbon paste, silver paste, or copper paste, and are printed using a printing method. If the transparent conductive material layer 7 has good conductivity, this step can be skipped. In this embodiment, electrode leads 8 are prepared by screen printing silver paste.
[0044] Step 7: Prepare an electrochromic layer 9 on the transparent conductive material layer 7 of the transparent electrode and the electrode leads 8, such as... Figure 3 As shown in Figure I, the selection of the electrochromic material in the electrochromic layer 9 should ensure that the driving voltage of the resulting electrochromic module is consistent with the voltage of the dry cell battery for which this invention's electrochromic power indicator is required, and that the color displayed by the resulting electrochromic module differs from the color displayed when the dry cell battery voltage drops slightly. In this embodiment, the electrochromic layer 9 is the film layer formed by curing water-based poly(3,4-ethylenedioxythiophene)-polystyrene sulfonate (PEDOT:PSS) electrochromic ink.
[0045] Step 8: Coat the electrolyte layer 11 onto the electrochromic layer 9 and bond it to the accessory prepared in step 4 (the electrochromic layer 9 and the ion storage layer 2 are bonded to each other) and cure it. The electrolyte layer 11 can be a UV-curable electrolyte or a thermosetting electrolyte. In this embodiment, a UV-curable electrolyte is used, and its specific composition is not described in detail.
[0046] After completing the above steps, the electrochromic power indicator device for dry batteries of this utility model, which uses a multi-layered color-changing structure electrochromic module, will be obtained. Figure 3 As shown in K in the figure. A schematic diagram of the multi-layered color-changing electrochromic module 14 is shown in the figure. Figure 4As shown. The electrochromic power indicator for dry batteries of this invention displays a deep blue color between 1.5-1.7V and a lighter color between 1.0-1.2V. The color is retained for about 20 minutes after power is turned off.
[0047] Example 2: The present invention provides an electrochromic power indicator for dry cell batteries using an electrochromic module with a single-layer color-changing structure.
[0048] Specific implementation steps:
[0049] Step 1: Cut the base electrode 1 into the required shape, such as... Figure 5 As shown in Figure L, the substrate electrode can be one of the following: a metal foil, a transparent conductive film with single-sided conductivity, or an opaque conductive film with single-sided conductivity. In this embodiment, we use a silver nanowire conductive film with a sheet resistance of 25 ohm / sq as the substrate electrode 1, i.e., a transparent conductive film with single-sided conductivity.
[0050] Step 2: Use adhesive to fix the insulating sheet 3 onto the base electrode 1, such as... Figure 5 As shown in M. If the base electrode 1 is a transparent conductive film that is conductive on one side or an opaque conductive film that is conductive on one side, then the insulating sheet 3 is fixed to the conductive surface of the base electrode 1. The insulating sheet 3 is a non-conductive plastic film. In this embodiment, a PET (polyethylene terephthalate) film with a thickness of 50 micrometers is used as the insulating sheet 3, and it is fixed to the conductive surface of the PET-ITO conductive film with a sheet resistance of 25 ohm / sq on the base electrode 1 using adhesive.
[0051] Step 3: Prepare electrode connection terminals 4 on insulating sheet 3, such as... Figure 5 As shown in Figure N. The electrode connection end 4 is a metal sheet, or an electrode printed on an insulating sheet using a conductive material such as carbon paste, silver paste, or copper paste. The end of the electrode connection end has a metal ring 5 that connects to the positive metal cap of the dry cell battery, or the end of the electrode connection end does not have a metal ring for connecting to the positive metal cap of the dry cell battery. In this embodiment, a thin steel sheet cut to the required shape and with a thickness of 0.02 mm is used as the electrode connection end 4. The end of the electrode connection end 4 has a metal ring 5 that connects to the positive metal cap of the dry cell battery. The metal ring 5 that connects to the positive metal cap of the dry cell battery and the electrode connection end 4 are integrated. The electrode connection end 4 is then fixed to the insulating sheet 3 with double-sided adhesive.
[0052] Step 4: Prepare an isolation ring 10 on the insulating sheet 3 and the electrode connection end 4, such as... Figure 5As shown in Figure O. The isolation ring 10 is a rubber ring formed by screen printing, inkjet printing, or dispensing of liquid rubber or silicone rubber, or an elastic ring made of hot-melt material. In this embodiment, the isolation ring 10 is prepared by hot-pressing a hot-melt adhesive gasket. The hot-melt adhesive gasket is attached to the insulating sheet 3 and the electrode connection end 4 by hot pressing to obtain an elastic isolation ring 10.
[0053] Step 5: On the transparent electrode substrate 6, prepare a transparent conductive material layer 7, such as... Figure 5 As shown in P and Q. The transparent electrode substrate 6 and the transparent conductive material layer 7 constitute the transparent electrode of the electrochromic module. The transparent electrode substrate 6 can be a PET (polyethylene terephthalate) film, a PEN (polyethylene naphthalate) film, a PI (polyimide) film, etc.; the transparent conductive material layer 7 can be one, two, or a mixture of two or more of ITO (indium tin oxide), FTO (fluorine-doped tin oxide), AZO (aluminum-doped zinc oxide), silver nanowires, copper nanowires, graphene, etc. In this embodiment, a PET-ITO conductive film with a sheet resistance of 25 ohm / sq is used as the transparent electrode, that is, the transparent electrode substrate 6 of the transparent electrode is a PET film and the transparent conductive material layer 7 is ITO.
[0054] Step 6: Fabricate electrode leads 8 on the transparent conductive material layer 7 of the transparent electrode, such as... Figure 5 As shown in Figure R, conductivity is improved. Electrode leads 8 can be made from materials with good conductivity, such as carbon paste, silver paste, or copper paste, and are printed using a printing method. If the transparent conductive material layer 7 has good conductivity, this step can be skipped. In this embodiment, electrode leads 8 are prepared by screen printing silver paste.
[0055] Step 7: Coat the transparent conductive material layer 7 of the transparent electrode and the electrode lead 8 with an electrochromic layer 12, such as... Figure 5 As shown in Figure S, it is bonded to the accessory prepared in step four (the conductive surfaces of the transparent conductive material layer 7 and the substrate electrode 1 are bonded together) and cured. In this embodiment, the UV-curable viologen material used is the electrochromic layer 12, and the specific composition of the UV-curable viologen material is not described in detail.
[0056] By completing the above steps, the electrochromic power indicator device for dry batteries of this invention, which uses an electrochromic module with a single-layer color-changing structure, can be obtained. Figure 5 As shown in T in the figure. A schematic diagram of the single-layer color-changing electrochromic module 15 is shown in the figure. Figure 6 As shown. The electrochromic power indicator for dry batteries of this invention displays a deep blue color between 1.5-1.7V and a sky blue color between 1.0-1.3V, and fades within 10 seconds after power is cut off.
[0057] The electrode connection end 4 of the electrochromic power indicator device for dry batteries of this utility model can also be directly welded to the positive metal cap 13 of the dry battery without using the metal ring 5 that connects to the positive metal cap of the dry battery. Figure 7 As shown.
[0058] If the electrode connection end 4 of the electrochromic power indicator device for dry batteries of this utility model has a metal ring 5 that connects to the positive metal cap of the dry battery, it can be directly fitted onto the positive metal cap 13 of the dry battery during the dry battery manufacturing process. Figure 8 As shown in U and V; if the end of electrode connection terminal 4 does not have a metal ring 5 that connects to the positive metal cap of the dry cell battery, it can be directly welded to the positive metal cap 13 of the dry cell battery. During the dry cell battery manufacturing process, it is directly installed on the positive electrode 21 of the dry cell battery, as shown in U and V. Figure 9 As shown in X and Y.
[0059] If the base electrode 1 is a metal foil, the electrochromic power indicator for dry batteries of this invention can be directly attached to the negative electrode 16 of the dry battery, and the base electrode 1 is electrically connected to the negative electrode 16 of the dry battery. Figure 8 U, V and Figure 9 As shown in X and Y. If the base electrode 1 is a transparent conductive film with conductivity on one side or an opaque conductive film with conductivity on one side, conductive tape 23 is required to connect the conductive surface of the base electrode 1 of the electrochromic module to the negative electrode 16 of the dry cell battery, so that there is conductivity between the conductive surface of the base electrode 1 of the electrochromic module and the negative electrode 16 of the dry cell battery. Figure 10 As shown.
[0060] After installing the electrochromic power indicator of this utility model onto the dry cell battery, affix the outer packaging film 22 of the dry cell battery, which has a transparent or hollowed-out graphic window 17, printed color labels 18, instruction text 19, and membrane switch position indicator 20, to the dry cell battery at the position corresponding to the electrochromic power indicator of this utility model. This will result in a dry cell battery that can display the power level. Figure 8 China and W Figure 9 As shown in Z. The transparent or cutout graphic window 17 can be designed as any shape; the color label 18 is printed with the same color as the color displayed by the electrochromic module under different voltage conditions of the dry cell battery (full charge, low charge, or failure); the instruction text 19 is the instruction text for the use of the electrochromic power indicator device for dry cell batteries of this utility model.
[0061] The dry cell battery equipped with the electrochromic power indicator of this utility model can be used by simply pressing the membrane switch position indicator 20. This causes the isolation ring 10 in the membrane switch 24 attached to the insulating sheet to deform, allowing the electrode connection end 4 to contact the electrode lead 8 or the transparent conductive material layer 7, thus connecting the battery to the electrochromic module and causing the module's color to change. The color change of the electrochromic module can be seen through the transparent or cutout graphic window 17. By comparing the color of the electrochromic module displayed in the transparent or cutout graphic window 17 with the color on the color label 18, as indicated in the instruction text 19, the battery's charge level can be determined, achieving the effect of power indication. Figure 8 China and W Figure 9 As shown in Z.
Claims
1. A color-changing power indicator for dry cell batteries, characterized in that: The electrochromic power indicator for dry cell batteries consists of an electrochromic module, an insulating sheet, a membrane switch attached to the insulating sheet, and electrode connection terminals. By pressing the membrane switch attached to the insulating sheet on the electrochromic power indicator for dry cell batteries, the color of the electrochromic module can change. The remaining power in the dry cell battery can be determined based on the color change of the electrochromic module, thus serving as a power indicator for the dry cell battery.
2. The electrochromic power indicator for dry cell batteries according to claim 1, characterized in that: The electrochromic power indicator for dry cell batteries has an electrochromic module that can be either a multi-layer or a single-layer structure. The multi-layer electrochromic module consists of a base electrode, an ion storage layer, an electrolyte layer, an electrochromic layer, and a transparent electrode. The single-layer electrochromic module consists of a base electrode, an electrochromic layer, and a transparent electrode. The base electrode can be one of a metal foil, a transparent conductive film with one side conductive, or an opaque conductive film with one side conductive.
3. The electrochromic power indicator for dry cell batteries according to claim 1, characterized in that: The electrode connection end of the electrochromic power indicator for the dry cell battery is a metal sheet, or an electrode made by printing a conductive material on an insulating sheet. The end of the electrode connection end has a metal ring that connects to the positive metal cap of the dry cell battery, or the end of the electrode connection end does not have a metal ring that connects to the positive metal cap of the dry cell battery.
4. The electrochromic power indicator for dry cell batteries according to claim 1, characterized in that: The electrochromic power indicator for dry cell batteries has an isolation ring attached to the insulating sheet in the membrane switch. The isolation ring is a rubber ring formed by screen printing, inkjet printing or dispensing of liquid rubber or silicone rubber, or an elastic ring made of hot melt material.