On March 10, Guangqi Yan released a new generation of power battery safety technology, magazine battery system security technology (referred to as: magazine battery), and equipped with a magazine battery The three-dimensional lithium battery of the system security technology has been used for the hot diffusion test. The test results show that the three-dimensional lithium (magazine battery) of Guangqi Yan has been issued 5 minutes after the test process during the test. Short smoke, no fire and explosion. After standing for 48 hours, the voltage drops to 0V and the temperature is restored to room temperature. After the acupuncture, only the pierced core module is completely out of control, and there is no spread to other cells. Open the battery pack and observe the internal structure intact. This is the first time through three-dimensional lithium batteries, the three-dimensional lithium battery safety has made historical breakthroughs. According to the four core technical points given by Guangzhou EA, ultra-high heat-resistant battery, ultra-strong battery safety cabin, speed cooling speed cooling system, the fifth-generation battery management system for full-time controlled Look, the magazine battery is an integrated car application solution with a battery (hardware), battery housing (hardware), and thermal management control strategy (software).
Basic confirm is that the first model of using the magazine battery solution is the Guangzhou Automobile Ean Aion Y, which is about to be listed in March. New Energy Intelligence Analysis Network will apply technical state according to the safety technical characteristics, study and determination of the model scene of the model. 
1, AION Y Map the battery of the battery system security technology solution:
In the official release of the technical system of the magazine battery system, it is mentioned in technology. “The new material used by the electrode can effectively improve the thermal failure of thermal failure”, “additives for electrolyte configurations can self-repair the functional extension battery life and reduce short-circuit risk”, “security-based electrolyte heating to 120 The thermal out-of control risk is lowered by chemical reaction when ° C is above.
Obviously, the cell interior of this cartridge battery is different from the current 5-Series, 6 Series and 8 Series three-dimensional lithium battery (pool) and iron phosphate. Lithium battery (pool). Since Guangqi Yan official does not have an accurate technical specifications for this battery, nickel (Ni) 55 high pressure single crystal positive material electrical cells (core) have a large possibility.
In the previous new energy intelligence analysis network, the nickel (NI) 55 high-pressure single crystal positive electrode material cell has been reported. Nickel 55 This “high voltage single crystal” ternary material, nickel-cobalt manganese positive material molar ratio is 55%: 12%: 33 percentage, which is also destined to have the basis of nickel 55 triple lithium battery with safety and battery life. The final monomer energy density exceeds 230 watt / kg, the system energy density exceeds 180 watt / kg, the nickel 55 battery system, which is better than the NCM811 “high nickel” battery in high density and security.
Of course, regardless of the nickel (Ni) 55 battery, or other unknown type of battery cell, the details of Guangqi Yan, Guangqi Eman, to the Subcommittee Technical specifications for use in a variety of models in AION series. It is also based on this kind of security-oriented, density battery application, so that the magazine battery can be raised to 686.7 degrees Celsius, smoking and exporting the hard strength after the puncture and exports.
The reason why the 8-Series battery is no longer selected and a 5-series battery is used or better for energy density and security. Of course, the nickel (NI) 55 battery cylinders of GAC ENA batteries are allocated with nickel (NI) 55 cells, introducing electrical cell nani coating technology and self-repairing SE film, safer electrolyte and other innovative applications.
2, AION Y Map the structural level of the battery housing structure:
Different brands EV \ Phev \ EREV \ HEV model sales in China market, The heat dissipation and pressure relief technology architecture inside the different types of power battery housing is completely different.
The HEV and EV models manufactured in Toyota (Ling Zhi) are represented by the active air-cooled heat or active air cooling technology. Inside the power battery mounted in Toyota Lingzhi UT300 electric vehicle, a 1 set of fan and 2 set wind turns (referred to as the yellow arrow) were used to blow cold air from air conditioning to the module for heat dissipation. This path that cannot withstand any pressure can only be used for high temperature heat dissipation, and cannot be used for pressure relief.
in otherBrand’s power battery of electric vehicle, inside the housing, more of the tubing of the carrier + water-cooled plate, but does not configure additional pressure relief line (only on the front and rear end of the battery housing) .
Optimization of the structural housing structure of the Guangzhou Automobile Egypton box is also the safety setting of the physical level. When the heat generated by the electrical cell is isolated in the battery case, the battery is laid in the top of the battery, so that the high temperature of the electrical core is separated from 1400 degrees Celsius and does not “burn” to the battery housing; for high temperature heat dissipation cooling Pipe + fully affluent liquid cooling system (water-cooled plate), actively cooling under the peripheral thermally heat transfer (intervention by thermal management control system), and continuously released heat conversion of energy through a preset pressure relief tube The speed discharge is released to the external pressure of the battery. 
Single from the hardware level, the Guangzhou Automobile Eshanbo battery has more “firewall” than other brand batteries in the housing structure.
3, AION Y Map the active thermal management control strategy of the bulk battery solution:
The mainstream new energy vehicle technology in the Chinese market in 2021, almost There is no model of the dynamic battery thermal management control strategy for passively cooling heat. However, there is a huge difference in temperature threshold settings for power cells with high temperature heat dissipation and low-temperature preheating based on coolant and “heat”, which are used for power cells. In other words, in the high-power DC fast charge mode, the battery cells brought by the power battery are raised to 36 degrees Celsius, 37 degrees Celsius, and even seem to 38 degrees Celsius, which will affect the safety of the whole vehicle.
The optimization of the thermal management control strategy of the Guangzhou Automobile Egyan Bouncing Battery is also the security setting of the software level. Regardless of the vehicle-powered or underwater state, BMS will detect the temperature of the battery 24 hours a day (uploading the background). Once the battery temperature is abnormal, the battery temperature rises to the preset threshold, and the high temperature heat dissipation function of the thermal management control system is activated. The refrigerant of the source from the electric air conditioner compressed output will be refrigerated, actively Perform full load cooling has reached a safe setting of suppressing heat into energy.
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BMS 24-hour thermal management control strategy for the battery temperature detection and active high temperature heat dissipation of the battery is not a new technical system. Guangqi ENA 5th-generation battery management is capable of responding to thermal out of control in the first time. In the full-time patrol mode, the fifth-generation battery management system monitors the temperature change of the battery. If the battery temperature changes breaks through the preset threshold, or the heating speed is abnormal, the “cold amount” output from the electric air conditioner is introduced, and the active high temperature heat dissipation servo is performed by the coolant. The thermal management control strategy for other brands of electric vehicles can only monitor the power cells while powering on the vehicle and make corresponding cooling measures, but cannot link in the lower electricity.
The safer battery cell used by the Guangzhou Automobile Ermy Bell Battery System It makes the BMS greater the “tolerance” range of the BMS in the monitoring of the cell temperature fluctuations. In other words, relatively adaptation of the three-yuan lithium battery model BMS system can only be used when the vehicle is started, and the model of the Guangzhou Automobile Egypton battery is all under the Monitoring of the BMS system, and it will not take too much (power battery loading) Electricity, and affects the endless mileage.
At least the 5th-generation battery management of Guangqi Yambo batteries, the control strategy of the fifth-generation battery management, after long testing and verification, taking into account safety and battery miles.
4, the application scenario of the secondary development and modified vehicle of the magazine battery system safety technology solution:
At present, 3 Guangzhou Aion Y electric vehicles have completed the Ministry of Industry and Information Technology, of which The two models adapted three-dimensional lithium battery energy density is as 162Wh / kg (NEDC endless mileage 503 km and 460 km), another adapted ternary lithium battery energy density is 184Wh / kg (NEDC endurance mileage 600 Kilometer).
This only one drive motor maximum output power is set at 135 kW (other two models of 100 kilowatts), adaptable power density 184Wh / kg, load Electricity 76.8 电 三 三 三 电 电 系统 系统 电 a 型 汽车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车 车
Adapted to power the density of 184WH / kg, load electricity 76.8 degree electric bullet battery solution Aion Y, will have more “abundant” electricity for the 5th generation battery management system servo And will not let the owner feel the change of the endless mileage “obvious”.
The magazine battery is a comprehensive solution for an integrated battery, housing and thermal management control strategy, and a combination of models that are developing is perfect in many aspects. However, the carton battery can be used to integrate the model change, and cooperate with the upgrade and adaptation of the vehicle electronic control system. Basically, it can be confirmed that the magazine battery solution will be used for the new AION Y and AION LX and other models of the secondary upgrade.
Apply Aion Y’s initial kickback battery still stores some conservative settings, such as thickness of the BDH material, the area of the water-cooled plate, and built-in thermal grooves). With the batch application of different models, the improved magazine battery or can develop different thermal management control strategies for different ratios of the three-dimensional lithium battery, and the iron phosphate battery cells, even if the battery assembly is sealed, the thermal tank will be used. Combined with the body welding, saving space increases volume density, indirectly increases the available battery life.
The author has something to say:
The suspected nickel (Ni) 55 selected by GAC ENA will be the same as the lithium iron phosphate battery, and there is a quite safe ternary lithium battery. When the magazine battery system security technology has sufficient infrastructure at the same time, it has strengthened physical means such as heat insulation, heat transfer, pressure relief, and introduced more active thermal management (high temperature heat dissipation) control strategies. As long as there is no production, Aion Y electric car will be more equal in security, manufacturing cost, battery life, and charging efficiency.
It should be noted that GAC ENA will definitely be modified and combined with different new and old models in the hardware part and software part of the existing magazine battery solution. When the existing product line of Guangqi Yama is gradually upgraded to a better state, it is also a period of comprehensive improvement of the magazine battery solution, and the comprehensive performance of the model is worth looking forward to.
New Energy Intelligence Analysis Network Evaluation Group 