Make Power Batteries No Longer A Burden for Automotive Industry
Application of Internet of Things, Blockchain, and Big Data Technology in the Power Battery Industry
Not long ago, a car guy trend made by Li Xiang detonated the Wechat moments. What exactly did Tesla do right to beat a lot of car companies? I think that new energy vehicles need to do two things right at this stage.
1 Let customers forget about mileage anxiety (or forget about the existence of batteries).
2 Give new energy vehicles new attributes (such as autonomous driving, smart cockpit).
Faced with the burden of cost accounting for 40%-60% and weight accounting for 20%-40%, the battery industry has been suffering for a long time. How to solve the anxiety that the battery brings to enterprises and customers has become a persistent problem. In the recent Blue Book Forum held in Wuhan, many industry leaders pointed out that the economics of purchasing and using fuel vehicles are the key to the rapid development of the new energy vehicle industry. In my opinion, the current power battery hinders the development of the new energy automobile industry mainly due to the following factors.
1 Current Problems in the Power Battery System
1.1 Security Issues
Since 2018, with the increase in the number of electric vehicles, spontaneous combustion and explosion problems caused by the battery system of new energy vehicles have occurred frequently. From 2020 to now (July 30), there have been 17 cases reported by the media. As a result, the national regulatory authorities have issued corresponding national standards, requiring car companies to trigger alarm signals to remind passengers to avoid danger after the battery is out of control, and to ensure that there is no visible flame outside the system within 5 minutes. But this standard is only a rescue measure after battery thermal runaway occurs. In terms of electrochemical principles, as the battery continues to be recycled, the health of the battery is reduced, and the risk of thermal runaway is increasing. What should really be pursued is to continuously monitor the usage of the battery system and analyze the health of the battery at any time to predict the risks in advance.
1.2 The One-time Purchase Price of New Energy Vehicles is High
Due to the high cost of the power battery system (the industry generally costs 1~1.2 yuan/Wh, and the battery system costs about 50,000 to 100,000), the cost of new energy vehicles is much higher than that of fuel vehicles with the same configuration. As customers pursue high endurance mileage, the cost of buying a car has risen, leading to a decrease in sales.
1.3 Low Residual Value of Used New Energy Vehicles
Power batteries account for 40%-60% of the vehicle cost. It can be said that the second-hand residual value of batteries almost determines the second-hand residual value of new energy vehicles. Due to the unpredictable health status of a certain node in the current battery life cycle, customers and second-hand car dealers are reluctant to accept second-hand new energy vehicles, resulting in low second-hand valuations of new energy vehicles, even two years for some models Nearly 50% of the car price was lost.
1.4 Difficult to Implement Cascade Utilization
Due to the lack of health assessment of the power battery, it is difficult to evaluate the safety and remaining life of the power battery system after the new energy vehicle is retired, and it is impossible to conduct transactions, which hinders the implementation of echelon utilization. As a result, the residual value of the power battery system cannot be effectively used.
The nature of the problems encountered in the power battery industry
In my opinion, the current problems encountered by power batteries can be summarized in the following two points:
The power battery cannot monitor the status at any time (temperature, voltage, current, time, etc.)
The collected data cannot be accurately collected, transmitted and analyzed current industry efforts and problems to solve the above problems
In order to solve the above problems, national regulatory agencies, various car companies and battery manufacturers have also made various attempts. But there are various practical problems.
Data collection: At present, with the application of the intelligent network connection system in the passenger car, generally the car will be equipped with a T-BOX (4G) transmission module to interact with the network. Some car companies will use the T-BOX installed on the car to transmit power battery data to the background. However, this method cannot send data when the vehicle is stationary and power-off, and cannot update the state of the power battery at any time.
Power battery data monitoring platform: In 2016, a new energy vehicle national testing and management platform led by the Ministry of Industry and Information Technology and built by Beijing Institute of Technology was established. This platform uniformly collects the power battery data transmitted by various car companies through T-BOX. However, due to the limitation of T-BOX, the data is not continuous, the stability is poor, and various car companies worry about data security, the data provided to the platform is very limited, which limits its application value.
Using the Internet of Things technology, the power battery operation platform based on blockchain and big data analysis technology may be an Internet of Things (IOT) technology,which can realize the power battery status monitoring of power-off conditions, and has low cost and stable transmission. IOT The electrical energy of the module can be directly derived from the power battery. With the T-BOX module, the battery life cycle status monitoring and data upload can be realized. Blockchain technology can be used to establish a trusted shared data monitoring platform for regulatory agencies, car companies and other related parties. Blockchain technology itself has the characteristics of non-tampering, sharing, and encryption. The data is credible, and the storage of sensitive data can be realized by using the private chain. Based on the above data, regulators and companies can build a power battery operation platform, make full use of these data, unify the needs of power grids, users, car companies, and other stakeholders, and create huge value and potential markets.
Application prospects of power battery operation platform
Provide users with battery safety warnings and integrate the intelligent interactive system in the car to intelligently plan user charging and driving plans. You can also use the CRM system to analyze customer behavior, guide customers' battery usage through APP, and give early warning before danger occurs. The APP can also integrate various scenarios such as electricity bill payment and charging facilities repair.
This system can provide insurance companies with more accurate estimates of new energy vehicle insurance costs. At present, spontaneous combustion insurance for new energy
vehicles is the most troublesome business for insurance companies. After the power battery big data system is implemented, the health status of the power battery system can be judged at any time, and the insurance company can calculate the premium of the vehicle more accurately based on the estimated failure probability. In turn, customers will benefit from the reduction and protection of insurance premiums, which in turn will promote vehicle sales.
It can better realize the separation mode of car and electricity. Users only buy cars and rent batteries, which reduces the cost of users buying cars. Auto companies can get more sales because of the drop in car purchase costs.
Better realize the V2G mode and improve the overall efficiency of the power grid. Through the ERP system, the power in the vehicle battery is combined with the peaks and valleys of the power grid, and the remaining power of the vehicle volume is taken out through the charging system during the peak period of power consumption, and the vehicle is charged during the trough period to achieve efficient use of electrical energy.
Potential Problems of Power Battery Big Data System
Although the application of power battery big data system has broad prospects, the problems of data collection, transmission and data security can be solved by current technology, but there are still some potential obstacles
There are games among auto companies, power battery manufacturers, and regulators, and cooperation is more difficult. Due to the huge value of power battery-related data, the three parties want to gain the lead and it is difficult to reach cooperation. But in fact, this is also an opportunity. The common value of the tripartite cooperation has been clarified.
The rapid development of power battery technology has caused its calculation model to be constantly changing, making the system unable to perform its role
The power battery big data analysis system based on the Internet of Things and blockchain technology has broad application prospects and can change the current dilemma faced by the new energy automobile industry. Although its real implementation requires coordination of the interests of multiple parties, it will definitely be a direction for the power battery industry in the future. In addition to new energy electric vehicles, another emerging industry-shared electric bicycles may be easier to apply power battery big data systems. Because the charging mode of shared electric bicycles has been proven to be impossible, most companies are now studying shared electric bicycles in a battery swap mode. Its battery capacity is small, the frequency of battery replacement is high, it needs to accurately control the power battery condition to provide sufficient battery life, and it needs to be mass-produced, and it can be managed in a unified manner. This is the perfect testing ground for the power battery big data system.
Publisher: Automotive Electronics Design ,from: http://www.batterycloud.com.cn/newsDetail?infoId=148