In August 7th Hangzhou-listed Geely’s geometry C electric vehicles, after deducting subsidies comprehensive price 12.98- 182,800 yuan, NEDC mileage of 550 kilometers (400 kilometers). This article will geometrical C cited “triple play” electric drive technology, electrical and aluminum materials and composite material of the traction drive assembly, based on heat pump power battery thermal management control strategy for comprehensive judgments.
Appearance 
Geometric Geometric C adhering to the concept of brand “Multidimensional flow living” C using geometric integrally suspended roof spoiler, dynamic Norikaze waist, motion Tomahawk wheels and other elements, to further reduce drag.
1, “3 in 1” first reference electric drive technology:
The picture shows the geometry of the front compartment C to the power state of many close-up subsystem . Adding a different relative dust cover in the sale of domestic brands of new energy vehicles will give power compartment practices geometric configuration C is no longer such a shield that prevents heat dissipation effect and without any dust.
Red Arrow: Integrated DCDC \ PDU \ OBD function of the “3 in 1” high-pressure discharge assembly
yellow arrow: an electric heat pump compressor system
white arrows: the dual heat pump system evaporator
blue arrow: power battery thermal management system fluid circulation pipeline pot
green arrow: “3 in 1” high charging and discharging system assembly, and “3 in 1” electric drive system assembly pot fluid circulation pipeline
in 2016 – during the production of new energy vehicles auspicious 2019, different assembly state of the art “2 1 “re-discharge high pressure system assembly (PDU + OBC), and a drive motor controller integrated OBC” 2 in 1 “control module.
Development of geometric C, while the integrated “3 1” a high-pressure discharge system, also facelift “3 1” drive assembly. Complete the high voltage discharge electric drive configuration of the control system, reduced to the maximum extent of two parts, regardless of the number of heat pipe length, the valve body, the electronic water pump power consumptionOr high voltage cable weight and heat, have been reduced to a greater degree, increasing the overall reliability.
in a geometrically C, evolved “3 in 1” high charging and discharging system (red arrow red arrow), PTC control module (yellow arrow) and initiating the battery 2 are supported by beams group aluminum material.
blue arrow: the cross member fixed to the bracket body aluminum material also has a certain weight function setting
However, this is not the highlight geometry C “3 in 1” level noise drive assembly wrapped outer sleeve, mounting assembly aluminum material instead + composite material. Need to make sure that the electricity made of composite material geometric configuration of C drive suspension assembly, is unique in the industry, helps to suppress vibration and light weight lifting.
blue arrow: “3 in 1” electric drive assembly (Noise wrapped liner)
yellow arrow: a driving motor fixed to the end of the aluminum material is suspended
[123 ] red arrow: composites fixed to the frame type sub-frame is suspended end
from another perspective, suspended between the aluminum material and the composite material with pouches “soft connection.” When rapid acceleration or rapid deceleration geometry C, “3 1” drive assembly will produce a forward or backward displacement accompanied by tremor. Composite material is suspended (block type fixed to one end of the sub-frame) can effectively suppress the displacement of the drive motor, and the tremor was filtered through a sleeve, to ensure the NVH performance of the vehicle.
where necessary to mention it, this can be attributed to the strength of the composite plastic material is much higher than aluminum structural parts, and more resistant to corrosion. Currently, over ONE MULTI incident “off axis” consecutive, the front lower suspension arm is applied at the composite material. Composites for “soft connection” is much lower than required to support the motor mount suspension, it reflects a continuous improvement in the geometric repairer C level, rather than radical “cliff” leap formula strategy.
Geometric C lightweight not radical, the group 3 “3 in 1” level of drive assembly mounting assembly, + steel material composite “mix and match” is made. Mounting composite materialFixed to the frame type sub-frame (also an important technique to enhance the geometric point C), aluminum material suspended in the “3 in 1” level drive assembly end, the two materials through sleeve “soft connections.”
2, the heat pump based on the level of the vehicle thermal management control strategy:
NEDC 550 km mileage geometry C, battery power to the load 70 kWh, the ITCS 3.0 battery management system with liquid cooling temperature control, temperature control in the cell plusmn; within 2 ℃, the temperature of the battery is always in the optimum temperature range. “Cold” temperature associated with
Geometric C battery management control system of the thermal heat, low temperature preheating source “heat”, and indeed the first integrated heat pump system. Relative electric air conditioning systems used in the sale of electric vehicles, heat pump system retains the electric compressor at the same time, a “cold swap” with a set of two-way evaporator. Although the physical structural complexity has increased, but the ratio of the power battery is loaded in the “cold” and “heat” from occupied conversion was significantly reduced.
The picture shows the geometry subsystem C battery thermal management control system
on.
white arrows: providing a “cold” water-cooled panel for the battery control module
The green arrow: power battery thermal management system fluid circulation pipeline Pot
Blue arrow: “3 in 1” level and the drive assembly a common charging and discharging system assembly “3 in 1” pot fluid circulation line
mounted on this geometry C energy-efficient water-cooled panel control module is divided into two parts, the red arrow points to the “cold” heat from this air conditioning cycle output region, a yellow arrow to provide liquid coolant is cooled through contact of the battery circulation area.
In the circulation system battery thermal management control system, comprising providing a set of high-temperature heat for the servo control module batteries water cooled panels, and a group to provide a cryogenic PTC preheating servo control module to cell group (hetero setting “3 in 1” system, the high-pressure discharge assembly lower end), and the plurality of sets of “3-way” valve.
C due to the geometrical configuration of the two-way air conditioning system of the present heat, the cockpit and the battery neededThe “heat” and “cold” output source of unity, a greater degree to reduce power consumption. As the vehicle level control system of a thermal management important new function, using the heat of the electric drive unit “3 in 1”, the introduction of the low-temperature preheating function of the power of the battery thermal management system, so that life at low temperature and then 4 percentage lift. ° C at ambient temperature, may enhance the estimated percentage of endurance 5, when the ambient temperature of minus 7 degrees Celsius, can improve the life of 10 percentage estimated.
3 for lightweight vehicle platforms:
C front suspension geometry is McPherson independent architecture, using torsion beam rear suspension semi-independent architecture, four weeks battery is completely shielded by opposing plastic shield.
The red arrow: the lower end of the front bumper guard
yellow arrow: lower fender front subframe
blue arrow: the battery casing opposite aluminum material
from the forward observation geometry of battery C, lowermost end of the front subframe in the same level, slightly upturned at the front guard bumper. Chassis many subsystems do not protrude foreign matter formation rules, help to reduce air resistance.
Geometric switched to a set of C steel material Full Rim sub-frame + the aluminum material A-type arm, to change this aspect of the suspension, perhaps with the weight has improved “3 in 1” electric drive assembly has been associated.
of the knuckle (yellow arrow) before the aluminum material A Type C geometry and configuration of the swing arm aluminum material. But note that the lower A-type arm of the ball stud (blue arrow) is set not replaceable. If abnormal wear since the lower ball joint, resulting in abnormal noise or deviation of the steering, it is necessary to replace the whole lower A arm type. Further, the weight of only 1.65 t geometry C, assigned to the front driving axle load, because the pin is a ball bump or a minor collision is “extracted” and “minor axis” fault does not occur.
Red Arrow: laying noise of the motor housing close to the lining thickness 80mm
yellow arrow: In order to facilitate rapid cooling, an additional set group 1 cooling assembly
blue arrows: to improve the heat dissipation efficiency is still, Near the motor coolant line access period set in the electronic water pump group 1
“3 in 1” maximum output power of an electric drive system mounted in a geometric C 150 kilowatts, the maximum output torque of 310 Nm, the highest speed 15,000 rev / min, so that the vehicle reaches hundred kilometers in 6.9 seconds, start to accelerate only 2.9s. For the current mainstream models that fit the drive motor, all because of rising power battery performance, rather than follow the principle of sacrifice performance in exchange for the life of the adapter. Instead, continue to tap the “low speed, high torque,” the characteristics of the electric car, at the same time ensure that the mileage, allow owners to enjoy the driving speed of “cool.” Maximum speed up to 15,000 revolutions / minute “3” electric drive assembly, the geometric mean power consumption generated C decreased at high speeds.
4,60 kW DC fast charge performance:
1 selected 60 kW DC provided by the national grid fast charge pile geometry charging efficiency and C battery thermal management strategies for comparison. 14:00 the same day of the test, the maximum surface temperature of only 37.4 degrees Celsius, and therefore would like to experience geometric C in fast-charge mode, battery thermal management system activate the high heat dissipation difficult.
After completion of the communication with the state of charge and the charge starts, the geometric center C of the display (the display including the driver) will automatically enter the relevant interface, in the form of dynamic histogram visual display of battery SOC value changes.
from the SOC value of battery 50 percentage to 70 percentage starts charging, current stability 130-150 security requirements, cell temperature is raised from 24 degrees Celsius to 29 degrees Celsius.
Based on past experience of the evaluation, the outdoor temperature does not exceed 40 degrees Celsius does not exceed DC fast-charging, the battery power dissipation is difficult to achieve a high temperature thermal management control system activates the geometry C function threshold value (temperature). 2020 in the sale of relatively mainstream models look, battery fast charge mode is turned on in the high-temperature heat dissipation batteries generally at a temperature of 36-37 degrees Celsius point. If the fast charge condition in the DC power, a plurality of sets cell temperature reaches 36-37 ° C, even if the temperature does not reach most of the cell will turn on the high-temperature bulkHeating function.
mounted on the electric vehicle C geometric mentioned front ITCS 3.0 battery temperature control liquid cooling management system, comprising monomers of the core so that the temperature difference is controlled electrically plusmn; capacity within 2 degrees Celsius. This power-saving core temperature of hundreds of omni-directional control, temperature control and thermal management system capacity of 20,000 degrees Celsius very good.
5, Geely new energy SEM unique intelligent energy management technology:
C geometry of a unique technical characteristics, is based on the whole scene, the whole conditions, the temperature of the system-wide level dynamic energy efficiency of the control algorithm, to achieve precise management SEM intelligent electrical energy consumption control. SEM intelligent energy management technology can be understood as (VCU) and the battery control system (BMS) union on a variety of parameters of the driver’s habits, charge mode, the air conditioning load control strategies such as dynamic calibration of the vehicle control system based not only improve endurance mileage precision arithmetic, but also have the ability to detect the vehicle after the adoption of long-term state control by optimizing the mileage upgrade.
is output as the vehicle power consumption / recovery efficiencies of an important part, a set of geometric configuration C iBooster integrated electro-hydraulic master cylinder, and with ESP function with an ABS valve, only to optimize braking profile, more braking force is converted into electricity storage battery to the power recovered. In the SEM intelligent energy management technology architecture, this braking system is to obtain geometric C driver’s habits, it is important subsystems energy output and other key data.
After completion of the two DC fast charge tests and dynamic tests, using the detected computer data cell voltage geometry C, the temperature and the SOC value retrieval is read and determination. Data about the battery option, can check all units in the module, the voltage and temperature values on batteries, and may acquire the power cell coolant outlet temperature values.
The author notes that, after the last in the fast charge current and the test with 70 km (intermittent open cockpit air conditioning cooling function), the temperature of batteries is almost 26 degrees, only the # 1 cell module temperature reach 27 degrees Celsius. The entire powertrain minimum temperature is 25 degrees Celsius, which means that the temperature of the material aluminum battery case will be lower thanCell temperature, and coolant temperature around batteries with most batteries with a temperature of 26 degrees Celsius.
as a geometric series of unique electric vehicle technology to enhance vehicle performance characteristics under SEM intelligent energy management technology architecture, manufacturers can be written as a geometric C push new the VCU and BMS control strategies, traffic data by using a longer time feedback in the market, and energy output / recovery parameters, re-adaptation, has been longer mileage. In the SEM intelligent energy management technical support, geometry C in winter, congestion and other usage scenarios and a range of 40 percent of maximum lift, basically table significant continued driving mileage is consistent with the actual driving range, accuracy close to 100 percentage.
while the electric vehicle C geometric data upgrade key must be returned 4S shop, operated by the service technician through special equipment. Although many repairer new forces are touting unlimited OTA upgrade mode, but it comes to electric drive and upgrade power batteries, once carried out in an environment without technical support, coat the event of unexpected failure, it could lead to vehicle in the main roads can not travel dilemma.
Geometric C includes an OTA upgrade, upgrade existing back up data, once read errors will restore the original configuration, and the upgrade key system must return 4S shop or convenience of authorized service station and security of both the practice worthwhile.
6,10 item aerodynamic design and smart driving techniques:
Geometric drag coefficient is only 0.273 C using a low power, low drag, low slip barrier technology, aerodynamic design set 10, including active grille, an air curtain functions spoiler settings on both sides of the grid. Both ends of the front bumper C geometry, the longitudinal opening of each group of the spoiler channels, drag reduction while optimizing the power efficiency of the cabin of hot and cold air exchange.
aspects of intelligent driving, geometric C equipped with industry-leading level L2 + intelligent driver assistance systems, follow the vehicle in front can be achieved between 0-150 kilometers per hour, the vehicle starts and stops and Truck turns, identifying potential hazards, emergency stop automatic brake and chassis technology perspective 540 degrees without dead AR, to all-round to ensure road safety.
There is to be mentioned C HUD head geometric configuration of the display function. By HUD instrument panel assembly, the driving speed, speed limits and other important information projected onto the windshield of the driver’s side. HUD head-up display configuration functions, minimize, deviate from the line of sight of the driver – dangerous driving display for the observation.
Chassis fluoroscopy no dead AR based on real-vehicle camera captured the auxiliary marking is synthesized with the virtual image through the algorithm, the pedestrian traveling direction of the front of the vehicle within 6m and moving objects in real-time monitoring, help the driver to enhance road traffic safety factor in the complex or extreme weather.
further includes a geometric C class-leading APA automatic parking system, with a visual, ultrasonic fusion depth, so that “automatic pairing”, i.e. a key stop, automatic parking horizontal, vertical poise car parking and optional parking supports tilt function. In entertainment, the central display supports an open environment can install a variety of APP, and with online music playback, and its adaptation is a Bose stereo.
I have something to say:
In August 2020 listing of geometry C, to maintain the appearance of a set of family geometry, as well as the interior part of the configuration. However, in many of the system set geometric C, there is continuous reflecting the evolutionary strategy based on the appearance of a plurality of dimensions, a drive, a battery, a control “to reduce energy consumption, improve efficiency”.
NEDC mileage 550 km, the loading amount of electricity 70, without using CTP- module art energy density of battery 183.23Wh / kg of vehicle weight C 1.65 t geometry, in 2020, the primary flow produced electric technical condition of the car. Energy density battery system
Geometric C is mounted 183.23Wh / kg, but this is not to increase the energy density of the cell in exchange for lifting. By introducing non-CTP- module technology, the module by removing its sub subsystems cooling circuit, high voltage cables, etc., to reduce the “extra” quality and a simplified structure, has reached indirectly enhance the energy density of the battery assembly of the target . No geometrically C CTP- selected module technology to improve simultaneously increasing the volume energy density, the choice of the ratio of 523 (nickel, cobalt and manganese) trihydricLithium batteries, in order to improve security. Further, using the same SAIC new energy ER6 CTP- 523 without battery module technology, but the system energy density is only 180Wh / kg, lower than the geometric C.
In a number of geometric models in the first adaptation in the sale of electric drive suspension technology of composite materials, lightweight vehicle can be seen as another bold but not aggressive attempt aluminum material on the basis of, or for subsequent composite model configuration more reliable authentication subsystem to provide.
“3 in 1” electric drive technology and “3 in 1” high-pressure discharge assembly dress, a significant reduction in electricity consumption of heat. Vehicle-level thermal management system in a two-way heat pump air conditioning systems and SEM intelligent energy management technology integrated control and reduce winter heating power consumption, dynamic complex environment mileage calculation becomes more accurate.
new energy network intelligence analysis evaluation group produced