A brief introduction about the disassembling of BUICK high performance power battery

Along with new launch of BUICK VELITE6 plug-in electric hybrid vehicles approaching, GM group analyzed its power battery parsing system through the blue BUICK new energy technology public class. The depth of analysis is even to the level of disassembling.

BUICK VELITE6 power battery disassembling

Buick VELITE6 plug-in electric hybrid power battery capacity of 10 KWH. Contains two battery modules, each battery module contains 52 soft packages of batteries. Main parts including high-performance ternary lithium ion batteries soft packages, flexible circuit board fold chip design, built-in battery module, high strength where V0 fire rating SMC composite cover, laminated plate integrated welding tray, high pressure interconnection and current/voltage/temperature signal acquisition of wiring harness, capillary water pipes + built-in heater thermal management system and battery management VITM and manual switch, relay assembly of electronic components.

A photo of plug-in hybrid BUICK VELITE6 power battery teardown (from GM)

Each battery module by the end plate, the end frame, batteries, heat insulation foam box, mouth words, cooling plate, flexible circuit boards, bind the ICB, thermistors, module and the module cover. Heat insulation foam box, mouth words, cooling plate and two pieces of batteries of the smallest stacking units, on the production line to complete the assembly by robots and stack. Finally, by the ultrasonic welding robot batteries pole piece and flexible circuit boards the ICB.

Using patent lamella type water-cooled battery module structure. System consists of pressure pipe heater, module, module outlet pipe, cooling liquid storage, storage, cooling plate and the flow tube.

BUICK VELITE6 fold chip design flexible circuit board built-in battery module (GM)

Plug-in hybrid Buick VELITE6 USES a new generation of modular high performance the ternary lithium ion batteries the bottom of the assembly in the model, and the back seat. Shared by the world's leading battery thermal management technology, implementation in the form of laminated type surface each battery unit independent and uniform temperature control, ensure better cycle life and more stable performance. In order to shape, and capacity of the battery pack, flexible configuration corresponding battery pack shall be carried out in accordance with the batteries of modular design. Between the batteries and joined the water-cooled radiator fins.

BUICK patent lamella type batteries water-cooled stacking unit (from GM)

Cooling module level compared with those of other manufacturers Buick VELITE6 plug-in hybrid power battery system USES an industry leading electric XinJi liquid-cooled system independently. With very thin water-cooling fin producers of capillary tube, two pieces of soft package of each water storage unit batteries for cooling. Make the battery cooling cycle can accurate distribution to each unit cell. Cell temperature can be controlled within 2 ℃, the effective guarantee the consistency of batteries. The wide working temperature range of - 30 ℃ ~ 55? C environment temperature, adaptability of different cities in China transport requirements.

BUICK power battery cell module assembled hint (GM)

Good BMS battery management system is the key to the Buick power battery give full play to the performance parts. It is VITM voltage current temperature detection module. VITM is installed between the two-battery module, to ensure that the high-pressure interconnection and current/voltage/temperature signal collection and the distance of the wiring harness from two battery module as far as possible short and balanced. VITM except by batteries of current/voltage/temperature signal monitoring batteries work outside, still can undertake safety monitoring and thermal management. When need to send instruction to relay assembly for emergency cut off action. At low temperature in power battery work will open heater control.

BUICK VELITE6 power battery voltage current temperature detection module VITM management (GM)

When working temperature is too low, power battery power attenuation appears to be very big. In order to guarantee the Buick VELITE6 can adapt to the use requirements of the cold weather. In the power battery thermal management system to join the internal integration of the heater. But by VITM module opens for heating when working temperature is too low. Ensure the battery quickly into the ideal work area. Reducing the power attenuation.

BUICK VELITE6 heater power battery thermal management system (GM)

Both high pressure and high-power power battery harness eventually connect to the relay assembly. By the relay assembly to complete external power energy distribution. Relay assembly consists of several groups of high voltage large current relay, is used to control the power battery is negative joint and disconnect. VITM security monitoring found that failure, relay assembly can accept VITM controlled emergency cut off action command. At the same time, which is located at the top of the power battery maintenance manual switch can also manually disconnect mechanical connection.

BUICK VELITE6 power battery relay assembly BDU (GM)

Saic GM power battery system development center

In order to support the rapid iteration Buick blue new energy vehicles, Saic GM power battery system development center was put into operation. Covers an area of more than 30000 square meters, with a total investment of 1.6 billion yuan. Planning and product line cover light mix, full hybrid, plug-in hybrid (program), whole series of new energy sources such as pure electric car battery. It is the general motors group battery assembly center first outside North America.

Saic GM power battery production line (from GM)

Saic GM power battery system development center set battery development capabilities; Battery quality, performance, safety test and other test certificate ability; The air and cools the battery pack assembly functions in one. Center of the air and cools the battery assembly line in the international leading level. Battery module assembly line through a lot of robots have smart vision and complete batteries and module of the feeding manipulator, assembly, transportation, and testing. The highly automated production line. And we can according to different models of power battery system experiment was carried out. Ensure that different battery can achieve high security, reliability and durability.

GM power battery system laboratory (GM)

As above, GM group analyzed deeply its power battery parsing system through the blue BUICK new energy technology public class. At the same time of knowing about the blue BUICK power, it can be seen that GM group has a long-term investment on new energy technology. The found of Saic GM power battery system development center speed up the localization of the technology. Through constant iterative and technology accumulation, it offers customers more excellent power battery system. If you are interested, you can get to know more about it when the plug-in electric hybrid vehicles BUICK VELITE6 is launched.

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