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Lithium ion secondary battery

A secondary battery and lithium-ion technology, applied in the direction of secondary batteries, battery circuit devices, non-aqueous electrolyte storage batteries, etc., can solve the problems of unsatisfactory integration effect and appearance, low integration efficiency, and low reliability

Active Publication Date: 2020-06-26
NAT ENG RES CENT OF ADVANCED ENERGY STORAGE MATERIALS SHEN ZHEN LTD CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing integration methods have the following problems: firstly, the integration process is complicated
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. The existing integration methods often lead to complex processing techniques and space constraints. Low utilization rate 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. Various auxiliary structural parts usually occupy a large amount of battery internal space, resulting in only small-sized low-capacity batteries. Comparing the integrated lithium-ion secondary battery 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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Taking the production of a cylindrical lithium-ion secondary battery with a constant voltage output and a MicroUSB charging interface as an example, this paper further elaborates on the structure and function of the lithium-ion secondary battery, and at the same time explains the lithium-ion secondary battery The realization method of high integration efficiency, high capacity and high reliability.

[0058] A lithium-ion secondary battery, which is cylindrical (its overall dimensions must meet the requirements of the R06 model size specification required by the "IEC60086-2:2011" standard), and its requirements are: battery diameter ≤ 14.5mm, battery height H ≤ 50.5mm, the battery has its own MicroUSB interface charging function; it has charge management function; it has charge protection and discharge protection functions (discharge undervoltage protection, charge overvoltage protection, charge overcurrent protection, discharge overcurrent protection, short circuit prote...

Embodiment 2

[0093] A lithium-ion secondary battery, the structure of which is similar to that of the lithium-ion secondary battery in Example 1, the difference being that the constant output voltage is 1.50V, and the specification of the third resistor R3 is 1.25K±1%. , The maximum charging current corresponding to the lithium-ion secondary battery is 500mA.

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Abstract

The invention provides a lithium ion secondary battery. The battery comprises a lithium ion secondary battery cell, a steel shell, a MicroUSB interface, a protection IC, an integrated IC, a first resistor, a second resistor, a third resistor, a first capacitor, a second capacitor, a third capacitor, an inductor, an LED lamp, a plastic part, a hard FR-4 substrate, a metal cap, a battery cell negative electrode wire and a battery cell positive electrode wire; and the battery achieves multiple integrated functions of charging, constant voltage output, charging management and protection and over-charging, over-discharging and over-current protection of the MicroUSB interface. Compared with the prior art, the lithium ion secondary battery is simple in process structure, easy to install, high inintegration efficiency, high in reliability and diverse in function.

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 MicroUSB interface and a charging input function, which integrates constant voltage output, charging management and charging protection, and battery protection (including overcharge protection, overdischarge protection, Over-current protection) and other functions, while also having a high-capacity single-plate lithium-ion secondary battery. Background technique [0002] Lithium-ion secondary batteries are being used more and more widely due to their advantages of high energy density, recyclability, high specific energy and long life. One of the application directions is to replace primary batteries, such as toys, smart homes, cameras and other applications. The single-use cost of lithium-ion secondary batteries is lower than that of primary batteries, showing strong competitiveness. Lithium-ion secondary batteries need to...

Claims

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Application Information

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IPC IPC(8): H01M10/0525H01M10/46H01M10/058H02J7/00
CPCH01M10/0525H01M10/058H01M10/46H02J7/0029Y02E60/10Y02P70/50
Inventor 钟发平刘宏兵陈鹏飞陈晓峰胡顺华龚颖林
Owner NAT ENG RES CENT OF ADVANCED ENERGY STORAGE MATERIALS SHEN ZHEN LTD CO