Lithium-ion secondary battery

Abstract

The invention provides a lithium-ion secondary battery, including a soft-packed lithium-ion cell, a steel shell, a TYPE C USB interface, a protection IC, an integrated IC, a first resistor, a second resistor, a third resistor, a fourth resistor, a Five resistors, first capacitor, second capacitor, third capacitor, fourth capacitor, fifth capacitor, sixth capacitor, seventh capacitor, inductor, red LED light, blue LED light, plastic parts, round rigid FR‑ 4 substrates, square rigid FR‑4 substrates, metal caps, insulating tape, battery negative metal strips and battery positive wires, to achieve rechargeable TYPE C USB interface, constant voltage output, charging management and protection, overcharge, overdischarge and overcurrent Protect all-in-one functions. Compared with the prior art, the lithium ion secondary battery of the present invention has the characteristics of high capacity and high reliability.

Description

technical field [0001] The present invention relates to a lithium-ion secondary battery, in particular to a lithium-ion secondary battery with a built-in TYPE C USB interface and a charging input function, which integrates constant voltage output, charging management, charging protection, battery protection (including overcharge protection, overdischarge Protection, over-current protection) and other functions, and at the same time, it has a high-capacity double-plate top-opening lithium-ion secondary battery. Background technique [0002] It has become a trend to integrate lithium-ion batteries with various input or output interfaces to reduce the difficulty of using lithium-ion batteries and improve the convenience of using lithium-ion batteries. The lithium-ion battery is integrated with the USB interface, management circuit, and protection circuit, so that the integrated lithium-ion battery has charging input, adjustable voltage output, charging management and charging p...

AI Technical Summary

Problems solved by technology

However, compared to the MicroUSB interface, the size of the TYPE C USB interface is much larger, which increases the difficulty of integration

[0004] The existing TYPE C USB interface integration method has the following problems: First, the integration process is complex

Due to the need for various components such as integrated circuit boards, circuit components, protective casings, input interfaces, and output interfaces, the integration is relatively difficult, and the integration effect and appearance are not ideal. For example, the existing integration method for cylindrical AA batteries Usually, the TYPE C USB interface is set on the side of the cylindrical battery, which leads to complicated processing technology, low space utilization and poor appearance

The second is that the efficiency of integration is not high. The existing method of setting auxiliary structural parts has low integration efficiency. A large number of auxiliary structural parts usually occupy a large amount of battery internal space, resulting in only small-sized low-capacity batteries. This makes the integrated lithium-ion secondary battery compared with the primary battery, the capacity advantage of the lithium-ion secondary battery is not obvious

The third is that the reliability of integration is not high, unreasonable structure, complex processing technology, low integration efficiency, many factors lead to the overall reliability of the final integrated battery is not high

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