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Power battery and battery cloud platform management method

A technology for power batteries and battery casings, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problem of irreparable batteries, and achieve the effects of increasing battery safety performance, easy implementation, and high safety.

Pending Publication Date: 2020-10-30
CHONGQING ACADEMY OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention also provides a battery cloud platform management method to solve the problem of adjusting the power distribution control strategy and preventing excessive charging and discharging from causing irreparable damage to the battery

Method used

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  • Power battery and battery cloud platform management method

Examples

Experimental program
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Effect test

Embodiment 1

[0034] 1. A power battery, comprising a battery casing, an electrode group and an electrolyte coated in the battery casing; the electrode group is formed by laminating a plurality of positive and negative electrode sheets and a diaphragm; it is characterized in that the positive electrode sheet is coated with The high-nickel positive electrode material composition of the cloth, by weight percentage, in the positive electrode material composition, binder 1-2.5%; Conductive agent 2.5-4%, the balance is high-nickel positive electrode active material; Silicon coated on the negative plate The base negative electrode material composition is calculated by weight percentage. In the silicon base negative electrode material composition, 1-2% of binder;

[0035] 1. The high-nickel positive electrode material is prepared by the following method:

[0036] 1) Mix nickel oxide, manganese oxide, lithium oxide and lutetium oxide by ball milling to obtain a uniform powder. The molar ratio of ni...

Embodiment 2

[0059] Example 2: The difference from Example 1 is that in the positive electrode material composition, the binder is 2.1%, the conductive agent is 2.9%, and the balance is the positive electrode active material. The negative electrode material composition includes the following components by weight percentage: 1.6% of binder; 3.6% of conductive agent, 1.6% of thickener, and the balance is negative electrode active material.

Embodiment 3

[0060] Example 3: The difference from Example 1 is that in the positive electrode material composition, the binder is 2.2%, the conductive agent is 2.5%, and the balance is the positive electrode active material. The negative electrode material composition includes the following components in terms of weight percentage: 2% binder; 2.8% conductive agent, 2 thickeners, and the balance is negative active material.

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Abstract

The invention discloses a power battery. The power battery comprises a battery shell, an electrode group and an electrolyte, wherein the electrode group is coated in the battery shell; the electrode group is formed by superposing a plurality of positive plates, negative plates and diaphragms; the positive plate is coated with a high-nickel positive electrode material composition, the negative plate is coated with a silicon-based negative electrode material composition, and the high-nickel positive electrode material is adopted to be matched with the silicon-based negative electrode material, so that the energy density of the single battery reaches 281Wh / kg, and the capacity is kept at 80% after the single battery is charged and discharged at the rate of 1C for 350 times at the room temperature; a lithium-rich positive electrode material is adopted to be matched with the silicon-based negative electrode material, so that the energy density of a single battery reaches 302Wh / kg, and the capacity is kept at 80% after the single battery is charged and discharged at the rate of 0.5C for 195 times at the room temperature circulation. Meanwhile, the invention further provides a battery cloud platform management method, model parameter changes of a polarization link are considered, battery safety design is guided through model research, battery manufacturing process parameters are controlled through a digital intelligent manufacturing technology, and the battery manufacturing consistency is guaranteed.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a power battery and a battery cloud platform management method. Background technique [0002] With the development of the global economy and the increasingly prominent issues of energy and environmental protection, the automobile industry is transforming into an energy-saving green automobile industry. Electric vehicles have become one of the main directions for the development of energy-saving and environmentally friendly vehicles with the advantages of zero emissions and low noise. The popularization of electric vehicles has led to an increase in the number of electric vehicles in the world. As a key power part of electric vehicles, the importance of power batteries is self-evident. With the rapid development in recent years, people have put forward higher and higher requirements for the miniaturization, high energy, service life, fast charging, cruising range and environ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0525H01M4/139H01M4/36H01M4/38H01M4/485H01M4/58H01M4/62H01M10/48
CPCH01M4/364H01M4/5815H01M4/5805H01M4/622H01M4/625H01M4/386H01M4/485H01M4/139H01M10/0525H01M10/48Y02E60/10
Inventor 王联高超杨亚萍李昱婷
Owner CHONGQING ACADEMY OF SCI & TECH
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