The new energy electric car battery attenuation issue

The competitive new energy has automakers expenses issue, which is widely spread by media. In China's auto market, power battery attenuation problem is becoming a bottleneck for the further development of new energy vehicles. Compared with some mature pure electric vehicle products abroad, many domestic new energy batteries have attenuation problem, which may be more serious!

Current global the first of BYD new energy car sales, and the Chinese pure electric car sales first Baic's new energy automobile products, travel distance was reported to have serious reduce problem.

In the new energy car ownership higher first-tier cities, whether Beijing in the north or the south of Shenzhen, is a large number of owners complaints attenuation of battery case. At present a lot of new energy automobile dealers consumers reluctant to replace the battery, battery attenuation is a normal phenomenon. So the author conducted a series of investigation and interview, hope to find a solution to the problem and the answer.

Abroad: new energy car battery quality?

In foreign countries, because of the large automobile recall system. The factory is very strict with the reliability of the power battery. In the United States, Japan, for example, a hybrid car is the mainstream of new energy vehicles. Regulatory requirements, most of the core of the hybrid car parts quality assurance period is 100000 miles. More strict in California, 150000 miles.

Global hybrid car ownership Toyota's biggest market share of new energy battery after warranty period, battery GengHuanLv is 0.003%.Another, according to data from the global sales of the first of the second generation of the Toyota Prius hybrid cars, there is only 1 in 40000 units need to replace the battery. Currently in the U.S. market 100000 Honda hybrid vehicles, battery failure cases are less than 200 cases after shelf life.

Renault and Nissan leaf electric car battery attenuation control is also very strict. On the one hand, a clear commitment in the vehicle warranty terms, battery capacity within 5 years / 100000 km dashboard display no less than 9, the leaf volume meter, a total of 12.Also announced for the leaf overall change of power battery charge is $5499.This a series of measures to help the leaf become the world's biggest selling electric cars.

Dongfeng Nissan in China joint venture production of morning breeze electric vehicles, battery USES is manganese acid lithium ion batteries, the range of 175 km, manufacturer claims that 10 years after can keep 80% of battery capacity. Since the purchasing invoice issued under normal transport conditions and meet the requirements of value buy-back clause, Dongfeng Nissan promised a repurchase according to the price of not less than 55000 yuan.

Repurchase condition is: the vehicle must be conducted in the designated stores warranty and repair, annual mileage is not more than 20000 kilometers, the vehicle has no major accident, and is valid for purchases invoice issued within months. 63-61.In addition, the battery capacity per shrink by 10%, the buyback will buckle base price 10000 yuan.

Is battery warranty terms not clear?

Compared with these foreign car companies of new energy automobile products relatively strict battery attenuation range and corresponding guarantee measures, as well as the specific conditions of the battery replacement and frequency, the vast majority of new energy vehicles sold in domestic product, on the battery warranty conditions, but there are a lot of fuzzy area and problems. the domestic new energy car ownership with these problems keep the increase of the time, also gradually surfaced.

The current domestic new energy vehicles for the vehicle and the key parts are put forward the warranty terms of time and distance, but did not specify the battery warranty conditions, cause consumers to purchase new energy vehicles, attenuation problem, found the battery with dealers in a lot of disputes. Such as BYD qin proposed battery batteries lifetime warranty, slogans, but did not specify under what circumstances the battery is power attenuation.

"TongJiRen car review also summarizes the other manufacturers have put the battery warranty terms of summary is as follows:

Attenuation into normal battery?

Most of the new energy vehicle owners to complain about the travel distance of reducing and power battery attenuation relationship, however, is not a simple linear relationship. The zhejiang huzhou neville new energy technology co., LTD., general manager of Dr Qing-sheng wang reflection, the attenuation and vehicle design of power battery, battery management system, driving habits and way of charging, and other factors, so to judge whether battery attenuation is not an easy thing.

Hunan Xiangtan galactic new energy co., LTD mainly produces power battery, battery management system and the drive motor and other new energy vehicles core components, the company's products 90% export. The general manager Mr Zhou Fuhua reflect, pick up their production lithium iron phosphate batteries and coach of battery management system, at present the export of German operations, travel distance 2011 factory is 300 kilometers, the travel distance is only 150 - to 150 kilometers.

In addition, the concern is: a lot of new energy automobile dealers and time-sharing lease operator to reflect, in 2014 before production of a lot of new energy car battery attenuation obvious problems, but after 2015, the factory of the new models, the failure rate significantly decreased.

Shanghai new energy vehicle owners thank a gentleman to reflect, in November 2015 he bought two electric cars, a car is Baic EV160, another is Jianghuai iev.Home installed the two ac charging pile and 1 dc charging pile. Since Baic EV160 mileage reached 15000 kilometers, Jianghuai iev mileage reached 18000 kilometers. The two electric cars are in Shanghai, most of the time, 90% of the charge of pile is the use of home. Baic EV160 battery obvious attenuation problem, already in May and July, respectively in two batteries, 1 July also changed in electronic control, to solve the problem. Jianghuai iev battery performance has been very good.

There are a lot of new energy automobile owners and time-sharing rental operators, because car time short, battery attenuation is not obvious. Located in Shanghai of time sharing rental general manager Dr Huang Ningjun reflect lease, spirit, their company has Saic e550, Baic EV160 and Jianghuai iev5 three kinds of new energy vehicles, since last August began operations, the average 2000 km per month per car, and now in the hot summer, so power battery attenuation is not obvious.

What criteria should be?

In order to avoid new energy vehicles in the process of using power battery attenuation complaint dispute occurs, the government should as soon as possible a battery attenuation testing standard and replace a new battery management measures, the existing "n years of x million kilometers" warranty commitment further fall to the ground. Attenuation batteries, car manufacturers need to have a clear inspection standards, and after some years of battery recycling method.

I strongly recommend that all Nissan's management approach, they not only develop the attenuation of clear battery detection method, is exploring how to implement the old new energy car battery arrangement in using the business model. Nissan 4 renergy formed a joint venture, for example, using 24 old leaf cells, reserve power when electricity trough, the peak power supply through the reserve of power auxiliary to tower.

In foreign countries, the German Daimler also combination with several related background of the company set up a joint venture, set out to build the world's largest retired battery energy storage power station.

So countries support the development of new energy car battery recycling enterprise preferential policies as soon as possible. Now there are some enterprises and Chinese universities in exploring phase as utilization of new energy car battery, Beijing Jiaotong university, for example, on the basis of many years research stations, began studying business model. Shenzhen walter m battery co., LTD has devoted himself to the new energy car battery recycling business, they will be out of power battery test, the safety of a storage power station.

The page contains the contents of the machine translation.