The application of FPC nuggets power battery PACK

As a power battery key link in the process of system energy density increase, pack in the field of import and application of new material is a lot of enterprises to carry out the direction of the research.FPC alternatives to traditional harness the use of innovation, is one of the important paths.

High lithium battery survey found, the domestic power battery in the era of the first echelon of Ningde and BYD has mass application FPC pack link.

"Compared with the traditional wiring harness, FPC has a highly integrated, automated assembly, assembly accuracy, thin thickness, super soft, lightweight, and many other advantages."Participated in byd force Thai vice general manager zhi-ming gu battery FPC imported to high lithium electricity, said the FPC schemes can help Pack layout is neat and compact structure.

It is accurate to solve the power battery enterprises in PACK link for space saving, automation level of core "pain points", zhi-ming gu's resultant force FPC plan proposed by the Thai in byd has batch used for 4 years, right now, he is out further market development.

In the role of leading enterprise of the demonstration, the porch tech center, we have pleasure in wanda, lishen, bick, universal, first, Thornton, new energy, youngsters who batteries and other large enterprises began to actively try to small batch import application.

Mainstream power battery enterprise general consensus is that in the next few years, FPC alternatives to traditional wire will significantly speed up the process, in the overall solution, price, reliability, etc, have comprehensive advantages of FPC suppliers will usher in a new market opportunities.

The old tree buds

In fact, as a kind of circuit board, FPC is not new, because the wiring density is high, the quality of a material is frivolous folding, over the past few decades, FPC has penetrated into every corner of the PC accessories market.

In the new power battery application field, FPC replacement of traditional wire is mainly used to pack link, to assist the battery pack information acquisition.Upper east electronic FPC head Xie Honghai is introduced: "FPC are able to import the power battery, mainly because compared with the traditional wiring harness, FPC in security, battery pack lightweight, process flexibility and automation of production advantage significantly from four aspects, to meet the domestic demand for power battery of high energy density and low cost orientation."

Specific to see:

Safety performance: in instead of the low voltage wires at the same time, FPC using metal with bus connections, add the fuse protection current design, to ensure the information's high-speed transmission route, make sure that even if the battery pack problem of short circuit FPC copper wire lines of interior design will directly to the fuse, avoid causing battery pack in other parts of the combustion or explosion;

Lightweight: compared with the traditional acquisition signal used wire harness and PCB (printed circuit board) products, FPC in battery cover inside take up less space, the overall weight is lighter, the increase of the energy density of battery pack to make a certain contribution.

Process flexibility: compared with numerous manual plug plug point and complex part of the traditional wiring harness, FPC breakthrough the limitations of the selection process and product can cooperate with the battery pack itself has the characteristics of ultrasonic, welding and other technology choice.

Automated production: FPC well-shaped, and design more integrated, can save a lot of redundant wiring connection work, mechanical scale is very suitable for mass production, assemble at greatly shorten working hours, save human at the same time, the automation for power battery assembly link, provide great possibility.

The feedback from the client confirmed the statement, byd's pack engineer, said conventional wire composed of copper wire surrounded by external plastic, several lines into an insulator to form a wiring harness, each root wire for connection to the battery pack to reach an electrode.When a lot of power battery pack current signal, need a lot of the root wire harness to cooperate, will use battery pack space.Layout can be realized and FPC neat and compact structure.

In the pack assembly link, the traditional wiring harness rely on manual workers will port on the battery pack, the effort of people in the different periods, batch production will inevitably produce fluctuations.Around the FPC is only 0.5 mm thick, the width can be customized according to the battery pack structure and assembly time by mechanical arm grab directly placed on the battery pack, fixed without manual sorting, have strong advantage.

Application of bottleneck

In spite of the superior performance, at the beginning of the import, FPC has not been widely applied to power battery.

"FPC products import than expected, mainly comes from the customer's two concerns: one is the cost.Single for FPC material, used in small batch, its use cost is significantly higher than the traditional wiring harness.The second is reliability.As the use of a new, original battery and Pack the performance of the FPC suspicious.But it is almost any new product in the imported will encounter problems in use."Byd is tasted a company project manager LanYanFei explanation.

In fact, in addition to the client's concerns, compared with consumer electronics field, using the high threshold of FPC in power battery end, also to some extent slowed the FPC is large import steps.Hin wanda engineer stressed: "as a automotive parts and components, power battery for FPC durability, stability and reliability of the very strict requirements are put forward."

On the one hand, power battery heat resistance, pressure requirements, are put forward for FPC FPC products must be high quality and durable material, therefore, for a lot of FPC producer, which means that the supplier structure adjustment, need to introduce the international top suppliers, corresponding to the material price is more expensive;

On the other hand, due to the battery voltage, temperature, current, and so on and so forth for timely and accurate control, power battery power battery according to specific needs with FPC assembly performance and shape for customized production, supplemented by a complex process of adjustment, as well as the strict test process, procedure, appear flaw, the whole piece of soft plate will be invalid.

"Before the import, battery/pack manufacturer early also to test for a long period of time, FPC the depth of this requires both sides to cooperate, also for research and development, manufacturing process of form a complete set of suppliers are put forward higher request, this is now only a few enterprises realize the difficulty batch application."The xin wanda engineers added.

Instead of blue ocean

Although still face some obstacles on cost and reliability, but in the power battery head enterprises and jointly promote the FPC producers, domestic FPC import in the field of power battery environment has improved significantly.

"To balance the cost factors, FPC in combination with the practical situation of part of the power battery developed 'FPC + traditional wire way of collocation, using effect is also significant, after the compromise of power battery space utilization, lightweight and automation performance improvement played a positive role."

A pack of declined to be named enterprise engineer said."In the past two years, based on its process improvement, power battery with FPC FPC producers have lowered the price of the lot, mass import industry FPC is expected over the next two years."

Such reasoning is not arbitrary, according to people familiar with the current wanda hin high-tech, hin, lishen, bick, day, Thornton, countries, universal, fu can power battery/pack enterprises are small batch or are trying to import the FPC products, predicts that as using further spread of the customer, and the increase of the companies involved in the field of market competition, the future prices of domestic power battery using FPC will decline further.

In addition to pricing, in the performance level, power battery with FPC also there is a large room to improve.A FPC producers said: "has been used in the field of digital mature FPC double panels, multilayer, such as higher performance products, is currently constrained by cost factor, has not been adjusted a wide range of imported power battery industry.Once cost problem get more properly handle, FPC will win more market in the field of power battery."

FPC "of course, this does not mean that the future will completely replace the traditional wiring harness and PCB (printed circuit board), after all, on the cost and durability, which does have the formidable advantage."The person added.

In fact, smell the breath of emerging markets electronics companies have accelerated the pace of distribution power battery market.Understands high lithium electricity, the current domestic JingWang electronics, resultant force Tai, Ansett, Hong letter, yi east electronic strong electronic supplier has on the market such as the corresponding expansion and product promotion planning, on power battery with FPC market competition seems to have.

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