China has long way to go the road of car battery industrialization
China North Vehicle Research of major projects of the National Institute of 863 electric vehicles Power Battery Testing Center is the primary test vehicle battery power and authority certification for the state the means of control quality to guide the development of the basic battery of tests, but also at home and abroad to carry out the relevant communication window. At present, China’s battery powers the vehicle in the development and production, what problems still exist? Their technical standards? To solve these problems, this reporter recently interviewed Prince, director of the Center for the winter.
“China Automotive News” At present, China’s battery powers the vehicle certification and control, how are we going?
Prince of winter: Since 2006, the National Directorate of Vehicle Standards announces new energy battery test in effect, the power of the electric vehicle VGP-BPS13B/B battery before testing the ad should be mandatory. Initially, only a very small output of the battery through certification, is currently about 30% of the production of the product has reached a certain standard. China North Vehicle Research Institute Power Battery Testing Center is the primary test vehicle battery power and authority certification, we passed by the State based on a car battery, battery modules and national standards Project 863 large energy batteries and super capacitors testing standards and all sorts of individual cells, modules, battery performance and safety tests and full tests.
Development of new energy vehicles for the safety of battery power and life cycle proposed higher requirements, certification and testing, as the battery from the battery company in the industry threshold of new energy, but this does not mean that by sensing the battery can be well applied to electrical car. Because electric vehicles are electric (EV), fuel and electricity and gas, hybrid electric (HEV, PHEV) and the model for many other performance requirements of the battery varies greatly needed features power to the vehicle VGP-BPS10B battery to assess specific pairing.
For the power of the battery of safety tests of performance include acupuncture, overloading, excessive discharge, squeeze, drop, high temperature, short circuit test items, etc. 7. Adopted into a single cell basis, we also test the security module will consist of five cells in the module series of battery tests. Due to cost constraints, at present there are very few companies test the safety of the battery. Testing a cost of “battery pack of 100 thousand to 50 million, while the entire group of test vehicles electric bus battery pack often requires the cost of several million dollars, we now have the batteries used in power real safety data of the electric vehicle, and compared with test data there will be some deviations.
“China Automotive News” In the testing and certification, you think how the safety performance of batteries power of China? What problems still exist?
Prince of winter: On the security side, China’s leading power vehicle overloading of the VGP-BPS10A battery over-discharge problem is not serious, but more problematic is the short-circuit, acupuncture and squeeze. While the battery life for companies looking to invest substantial funding, but most production of the batteries in these three cases is difficult to ensure. Although acupuncture, short circuit, the compression is borderline, but not underestimate the potential danger. In case of spillage, accident, the implementation of the rescue process, the presence of the battery power of these problems often causes secondary damage.
This year, the state-led industrial development of new energy, promote the advancement of electric vehicle technology, however, electric vehicles launched around the relatively blinder. Vehicle battery charge and discharge process is very complicated and complex, motor cars and the environment, often found in the wind, frost, rain, snow and other inclement weather, the battery safety, consistency, stability , demanding. Battery companies not only need to have a strong R & D team, but also a large number of trial experiments, to produce a driving force to meet the application requirements. Currently, Chinese companies generally have no experience of producing batteries supply, equipment manufacturing, sensors, connectors, positive and negative material, divide not advanced enough, there will be a great risk production blind.
“China Automotive News”: the last two years, China’s VGP-BPS8B battery production vehicle supply and sales, technical level and scale of development in what way?
Prince of winter: the use of point of view, China Ni-MH battery that lithium batteries perform better security, but the lithium battery a higher energy density and longevity. Currently, domestic companies producing lithium batteries more, especially lithium iron phosphate faster than any other battery development. There are many dynamic models of electric vehicles, different models of batteries, has raised one of the requirements of different applications.
Scale production and marketing standpoint, my car battery power are in the basic R & D, pilot phase, which has yet to reach mass production, it is not widely used in electric vehicles, short term, businesses in the battery pack is unlikely to achieve profitability.
“China Automotive News” with the advanced international level, the gap between the battery power of China is reflected in what areas?
Prince of Winter: First, the foreign power batteries using automated production methods, while internal essentially manual and semi-automatics are not likely capabilities of mass production, level of accuracy is not high. Degree of commercialization of view, China has the VGP-BPS10A/B battery power can be sold, while foreign sales of pre-existing motive power free. From the product structure, the foreign accent on the overall design and evaluation battery, including battery heat, energy management, standardization of connectors. In China, the focus of battery companies still in the material of the battery. In addition, foreign battery parameters of development, standardization, serialization functionality significantly, while the size of domestic products, the range varied from a heterogeneous disorder.
Second, China is relatively backward battery production facilities of electricity, many companies focus on the subject, ignoring the improvements of the manufacturing equipment. At present, China will depend mainly on the production of batteries and equipment imports expensive, which is our development of battery power vehicle is very unfavorable power batteries in mass production It should be equipment for advanced automation, the focus of advanced research.
Third, most independent research firms in China and battery development, funding is limited, can not solve the fundamental problems of battery technology is difficult to advance further. Lack of adequate communication between businesses, all want to know the circumstances of other people do not want to talk about their own experiences, there is widespread low-level study of the phenomenon of repetition. We must learn from Japan, to create a dynamic alliance in battery technology to promote technological development common to spend money on the razor’s edge.