Soft package lithium battery with built-in polymer in Type-C interface

Abstract

The utility model relates to a soft package lithium battery with a built-in polymer at a Type-C interface, which comprises a polymer soft package lithium battery and a PCB (printed circuit board) protection plate, and two ends of a light nickel sheet are respectively welded with a negative electrode end of the polymer soft package lithium battery and a negative electrode end of the PCB protection plate to form circuit conduction. Two ends of the silica gel wire are respectively welded with the positive electrode end of the polymer soft package lithium battery and the positive electrode end of the PCB protection plate to form circuit conduction; the metal interface, the plastic opening and the metal cover cap are assembled into an integrated piece to form a bracket cover cap, and the metal interface and the plastic opening form a Type-C interface; the Type-C interface is connected to the metal cap; the metal of the support cover cap is connected with the metal of the PCB protection plate to form electric conduction. And the polymer soft package lithium battery is arranged in the steel shell. According to the utility model, environmental protection and safety can be realized, the number of secondary charging cycles can reach 1200 times, and equivalently, a Type-C rechargeable lithium battery is equal to 1200 alkaline dry batteries.

Description

Technical Field

[0001] This utility model relates to a lithium battery, and more particularly to a soft-pack lithium battery with a built-in polymer and a Type-C interface. Background Technology

[0002] A dry cell battery is a chemical battery that generates direct current using a paste-like electrolyte (a wet cell battery uses a liquid electrolyte). Dry cell batteries are disposable and are the most commonly used and portable batteries in daily life. They can be used in many electrical appliances.

[0003] However, the biggest drawback of dry cell batteries is that they can only be used once. For long-term use, Type-C polymer lithium batteries are the best choice. Utility Model Content

[0004] This invention designs a soft-pack lithium battery with a built-in polymer and a Type-C interface. The technical problem it solves is that existing dry batteries cannot be reused, and an alternative structure is needed.

[0005] To solve the aforementioned technical problems, the present invention adopts the following solution:

[0006] A polymer-embedded soft-pack lithium battery with a Type-C interface is characterized by comprising a polymer soft-pack lithium battery and a PCB protection board. The negative terminals of the polymer soft-pack lithium battery and the PCB protection board are respectively soldered to both ends of a nickel strip to form a conductive circuit. The positive terminals of the polymer soft-pack lithium battery and the PCB protection board are respectively soldered to both ends of a silicone wire to form a conductive circuit. A metal interface, a plastic opening, and a metal cap are assembled into a single unit to form a bracket cap, with the metal interface and plastic opening forming a Type-C interface. The Type-C interface is connected to the metal cap. The metal of the bracket cap connects to the metal of the PCB protection board to form a conductive circuit. The polymer soft-pack lithium battery is installed in a steel casing, and the steel casing and the bracket cap are pressed together.

[0007] Preferably, barley paper pads are attached to the upper and lower connections between the polymer soft-pack lithium battery and the PCB protection board to prevent contact between components.

[0008] Preferably, the plastic cap is welded to the bracket cap to fix the PCB protection board.

[0009] Preferably, the PCB protection board has a conformal coating on its surface.

[0010] Preferably, the polymer soft-pack lithium battery uses the COT component in the PCB protection board to step down the internal lithium battery voltage to 1.5V.

[0011] The built-in polymer pouch lithium battery in this Type-C interface offers the following advantages:

[0012] (1) This utility model can produce environmentally friendly and safe products that can be recharged up to 1200 times, which is equivalent to one Type-C rechargeable lithium battery being equal to 1200 alkaline dry batteries.

[0013] (2) It has safety protection functions, integrating overvoltage, overcharge, over-discharge, undervoltage, short circuit, over-temperature and other protections.

[0014] (3) This utility model uses silicone wires. The softness of the material can effectively prevent the copper wires from being exposed due to bending or scratching during the assembly process, which could lead to short circuits that do not pass through the IC on the PCB protection board.

[0015] (4) The main component PCB protection board of this utility model has a layer of three-proof paint added during the process assembly, which effectively avoids the corrosion of the circuit environment, thereby improving and extending its service life and ensuring the safety and reliability of use.

[0016] (5) The polymer lithium battery of this utility model uses the COT component in the PCB protection board to step down the voltage of the built-in lithium battery to 1.5V, which can replace the nominal voltage of dry cell batteries and be used in many electrical appliances. For long-term use, the Type-C polymer lithium battery is the best choice. Attached Figure Description

[0017] Figure 1 : Exploded view of the polymer soft-pack lithium battery with built-in Type-C interface of this utility model.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1—Polymer soft-pack lithium battery; 2—PCB protection board; 3—TYPE-C interface; 4—Metal interface; 5—Plastic port; 6—Metal cap; 7—Bracket cap; 8—Barley paper gasket; 9—Bright nickel sheet; 10—Silicone wire; 11—Plastic cap bracket; 12—Steel shell. Detailed Implementation

[0020] The following is combined Figure 1 The present invention will be further described below:

[0021] like Figure 1As shown, a polymer soft-pack lithium battery with a built-in Type-C interface includes a polymer soft-pack lithium battery 1 and a PCB protection board 2. A nickel strip 9 has its negative terminals of the polymer soft-pack lithium battery 1 and the PCB protection board 2 soldered to form a conductive circuit. Silicone wires 10 have their positive terminals of the polymer soft-pack lithium battery 1 and the PCB protection board 2 soldered to form a conductive circuit. A metal interface 4, a plastic port 5, and a metal cap 6 are assembled into a single unit to form a bracket cap 7. The metal interface 4 and the plastic port 5 form a Type-C interface 3, which is connected to the metal cap 6. The metal of the bracket cap 7 is connected to the metal of the PCB protection board 2, forming a conductive connection. The polymer soft-pack lithium battery 1 is installed in a steel shell 12, and the steel shell 12 and the bracket cap 7 are pressed together.

[0022] At the connection points between the polymer soft-pack lithium battery 1 and the PCB protection board 2, insulating barley paper gaskets 8 are attached to prevent contact between components. Plastic caps 11 and bracket caps 7 are welded to secure the PCB protection board 2. The surface of the PCB protection board 2 is coated with conformal coating. The polymer soft-pack lithium battery's internal lithium battery voltage is stepped down to 1.5V via COT components within the PCB protection board.

[0023] The internal structure of this utility model is designed with a polymer soft-pack lithium battery 1 and a PCB protection board 2, which are simulated as a 1.5V alkaline dry cell battery through a COT step-down converter. The polymer soft-pack lithium battery 1 is assembled with various components such as a steel shell 12, a metal cap 11 and the polymer soft-pack lithium battery 1. The positive and negative terminals of the polymer soft-pack lithium battery 1 are connected to the PCB protection board 2. This utility model has a safety protection function, integrating overvoltage, overcharge, over-discharge, undervoltage, short circuit and over-temperature protection.

[0024] The Type-C interface 3 is connected to the front of the metal cap 6. The steel shell 12 and the metal cap 6 are sealed through the assembly process, which can effectively prevent the Type-C interface 3 from easily coming loose after long-term use. The positive electrode of the polymer soft-pack lithium battery 1 is soldered to the PCB and a silicone wire 10 is used at the corresponding positive electrode. The flexibility of the material can effectively avoid the copper wires from being folded, scratched or broken during the assembly process, resulting in short circuits caused by the copper wires not passing through the IC of the PCB protection board.

[0025] If this utility model is left unused for a long time and in a static state, low voltage phenomena such as voltage self-dissipation and leakage may occur. The solution is to add a layer of conformal coating to the PCB protection board 2 of the main components during the process assembly, which effectively avoids the corrosion of the circuit environment, thereby improving and extending its service life and ensuring the safety and reliability of use. After the conformal coating is cured, it forms a transparent protective film with properties such as insulation, moisture-proof, leakage prevention, shockproof, corrosion-proof, and anti-aging.

[0026] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the implementation of the present invention is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A soft-pack lithium battery with a built-in polymer and a Type-C interface, characterized in that: The battery includes a polymer soft-pack lithium battery (1) and a PCB protection board (2). The negative terminals of the polymer soft-pack lithium battery (1) and the negative terminals of the PCB protection board (2) are respectively welded to the two ends of the nickel sheet (9) to form a circuit connection. The positive terminals of the polymer soft-pack lithium battery (1) and the positive terminals of the PCB protection board (2) are respectively welded to the two ends of the silicone wire (10) to form a circuit connection. The metal interface (4), plastic opening (5) and metal cap (6) are assembled into a single piece to form a bracket cap (7), and the metal interface (4) and plastic opening (5) form a Type-C interface (3); the Type-C interface (3) is connected to the metal cap (6); The metal of the bracket cap (7) is connected to the metal of the PCB protection board (2) to form a conductive connection; The polymer soft-pack lithium battery (1) is installed in a steel shell (12), and the steel shell (12) is pressed together with the bracket cap (7).

2. The soft-pack lithium battery with a built-in polymer and a Type-C interface according to claim 1, characterized in that: A barley paper pad (8) is attached to the upper and lower connection points of the polymer soft-pack lithium battery (1) and the PCB protection board (2) to prevent contact between components.

3. The soft-pack lithium battery with a built-in polymer and a Type-C interface according to claim 2, characterized in that: The plastic cap (11) and the bracket cap (7) are welded together to fix the PCB protection board (2).

4. The soft-pack lithium battery with a built-in polymer and a Type-C interface according to claim 3, characterized in that: The PCB protection board (2) has a conformal coating on its surface.

5. The soft-pack lithium battery with a built-in polymer and a Type-C interface according to claim 4, characterized in that: The polymer soft-pack lithium battery (1) uses the COT component in the PCB protection board (2) to step down the built-in lithium battery voltage to 1.5V.

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