Recently, GAC ENA released a magazine battery program and broadcast it for the acupuncture test. The biggest highlight should be that the power battery system of the three-dimensional lithium battery is no fire in the acupuncture experiment. However, during the test, the steel needle pierces the vicinity of the battery housing (or the thermostable battery, or the housing involving the heat transfer) is increased to 686.7 degrees Celsius.
After Guangqi Eman launched a magazine battery program, many media and netizens contrast their blade battery systems launched by BYD 2020. The new energy intelligence analysis network compares the Guangzhou Automobile Egyan Bell Battery Program and the BYD Blade Battery System in accordance with many of the information points that are mastered. 
Guangqi Yamang clamp battery technology mainly applied to a three-dimensional battery module, The author learned that the internal information of the cartoon battery assembly is suspected to be a nickel 55. Nickel 55 is a “high voltage single crystal” ternary material, Ni55 positive material molar ratio of Ni55 percentage: CO13 percentage: MN27 percentage.
During the acupuncture process, the temperature of the heat conversion to energy is suppressed by single crystals, special separators and high temperature electrolytes, and the temperature is increased to 686.7 degrees Celsius. The high temperature to be converted into white cigarettes but there is no fire burning. The battery system detects the battery temperature through 24-hour BMS electronically controlled system. Once the thermal out of control is present, the high-temperature heat dissipation function of the thermal management system starts actively carrying high temperature heat dissipation; if the thermal management system is low-temperature heat dissipation capacity to reduce the temperature of thermal out-of control The heat transfer tank of the battery housing will be released from the energy converted to the heat, and at the same time, at the time of the tip of the tip of the battery case, the material of the tip of the battery housing is to extend the time of heat to the cockpit for the occupant escape.
The blade battery is the most important technology of BYD to put on the market last year, from unresponsible “tie yourself A needle start,It fully reflects the safety of the blade battery compared to the traditional three-dimensional lithium battery and lithium iron phosphate battery. This is a strategy that solves battery safety from the root (battery cell), so the blade battery no longer needs too much additional protection for the battery security system.
In the full process of the blade battery cells (about 28 minutes), short-circuit occurred inside, and the heat is continuously released. However, in the whole process, the outer casing of the large monomer phosphate is not deformed, which means that the heat released is not reached to the extent to which the pressure is conversion, and the pressure relief valve is not opened, and even the smoke generation and the cell housing of the cobb housing without the visible cylinder. The deformation.
BYD chooses the core of the iron battery as the core of the blade battery, and is mainly because the lithium iron phosphate material itself has high heat release temperature, slow heat, low heat, and materials do not release oxygen during decomposition. Big advantage. However, due to the energy density and three yuan lithium, many passenger cars in the past few years have fallen into the irrational pursuit of power battery energy density, and the lithium iron phosphate battery is in the line of the line of the three-dimensional lithium battery. defensive.
However, BYD has continuously improved the energy density of iron phosphate battery, and the battery technology is integrated with the large-module CTP packaging technology, low-conductivity coolant, and width of 96 cm long and wide. 9 cm, high 1.35 cm single cell, arranged together by array, inserted into the battery pack like “blade”, constitutes a blade battery system loading application. Equalize the longitude and high security attributes of the power battery.
3, the two batteries are different from:
Guangqi EMAN Bag battery technology solution is based on ternary lithium battery characteristics, via electricity Core improvement and packaging and control strategy, suppressing fire and combustion caused by thermal out-of control, therefore, the ballifier battery technology is more focusing on the overall safety of battery packs, mesh nanopore heat insulating materials, high temperature housings, all-fitting fluid The fifth-generation battery management system of cold system and full-time control is the key to the safety technology of GAC Eshanasia.
The BYD blade battery system is based on the safety of the lithium iron phosphate battery itself, and is improved and packaged by the battery.Surgery and control strategies, temperature climbing does not replace energy release when the thermal loss of control occurs. Therefore, BYD can break the technology to focus on the increase in battery energy density and the decrease in battery pack costs.
In fact, the Guangzhou Automobile Elan Bag Battery Program and the BYD blade battery system are based on battery core, integrated battery assembly, heat insulation system, thermal technology, thermal management control strategy, and model The form of hardware is combined with software.
Guangqi Yan is improving because of the battery assembly and thermal management policies due to the third parties in the battery assembly and the thermal management policies.
BYD has its own own research and production of self-developing and mass production because of the battery (electrode, diaphragm and electrolyte), battery assembly and thermal management, etc., which is very volatile.
The author has something to say:
Since 2018, China’s new energy financial subsidy policy is no longer rational, and many models have begun to explode. There is a flaw and fire, combustion or even explosion accidents.
Jianghuai Wei, a new force, ES8 “4 consecutive burn” to recall; Roewe ERX5, the traditional car factory, frequent, frequent, fire accident; therefore, no matter how Guangzhou Ean’s magazine battery solution and BYD’s blade battery system must integrate a large number of market verification on the model, and analyze the data from data and comparison is pale weak.
As of now, the model of the BYD blade battery has been listed several, including the BYD D1 pure grid, which is currently running in Changsha, which is near one. There is no spontaneous accident in the year of use, which is undoubtedly “you will sick, you want you to live” for the forefront of the three-yuan lithium battery in front. The Guangzhou Automobile Essencing Battery is indeed a little things in terms of the technical characteristics of the launch conference.
The model equipped with the Guangzhou Automobile Enshank battery will be launched later in 2021, and will also study and determine the state of these two batteries and vehicle technology.
New Energy Intelligence Analysis Network Evaluation Group [1twenty three]