With the increasing number of models developed by various car companies based on the MEB platform, some new changes have taken place in the design of EV battery packs. In general, the design is still around the cruising range, charging rate, cost, etc. Let's take a look at some of the recent trends and trends in EV battery pack design in foreign countries.
In order to facilitate everyone's understanding, this section mainly uses the soft package PACK as an example to share with everyone.
This is the relatively hot Jaguar I-pace battery system in the near future. The battery system uses LG NCM soft-package batteries, with a single capacity of 58Ah, a total of 432pcs batteries, combined into 36 modules, 12 batteries per module. . The battery system weighs 613 kg and has an energy density of 146.8 wh/kg.
I-pace module, from this picture, we can see at a glance that the modular group design cancels the module bracket, 12 batteries are stacked together, and the sampling design uses 3D FPC.
In order to maximize the PACK energy density, manufacturers have racked their brains, of course, the final plan may be the same. Let's look at a design again. This is a schematic diagram:
It is easy to see the difference between the front and rear design. The latter battery module bracket and heat sink are eliminated, and a new heat dissipation method is designed. The 3D FPC is designed for data sampling, which brings the benefits of reduced module height and high automation.
3D FPC (schematic), integrated FUSE design:
This is a design made by AVL. It is also a soft-packed battery core with poles at both ends. Of course, the height and length also basically determine the structural design of the battery core.
It can be seen that this design has the same effect as the I-pace module. It is said that the module design can increase the energy density by 25%, 20% bulk density, and meet the 80mm high battery PACK requirement.
In addition, what new features are there in the lightweight design of the cabinet? The relatively new one is that the carrier module part adopts a honeycomb structure.
A brief look at the honeycomb structure is a schematic.
Finally, a brief look at the simulation of heat transfer simulation of honeycomb structures, with two pictures.
Heat source input:
Heat transfer path:
This article is mainly about throwing bricks and jade, I hope everyone can communicate more. Ok, just introduce so much, as a reference.
Mining is the process of creating a block of transactions to be added to the Ethereum blockchain in Ethereum's now-deprecated proof-of-work architecture.
The word mining originates in the context of the gold analogy for cryptocurrencies. Gold or precious metals are scarce, so are digital tokens, and the only way to increase the total volume in a proof-of-work system is through mining. In proof-of-work Ethereum, the only mode of issuance was via mining. Unlike gold or precious metals however, Ethereum mining was also the way to secure the network by creating, verifying, publishing and propagating blocks in the blockchain.
Mining ether = Securing the Network
Mining is the lifeblood of any proof-of-work blockchain. Ethereum miners - computers running software - used their time and computation power to process transactions and produce blocks prior to the transition to proof-of-stake.
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