BYD’s e-Platform 3.0 is the third-generation technology platform specifically designed for pure electric vehicles, first released in 2021, with an upgraded version, e-Platform 3.0 Evo, introduced in 2024. The platform is centered on efficiency, safety, intelligence, and aesthetics, defining new standards for electric vehicles through highly integrated technology and innovative design. Here is a detailed analysis of its core advantages:
1. High Efficiency
- 8-in-1 Electric Powertrain System: Integrates 8 modules including the motor, controller, reducer, on-board charger, DC-DC converter, etc., with a comprehensive efficiency of over 89%, a leading level in the industry.
- 800V High-Voltage Fast Charging Technology: Supports a range of 150 kilometers (or 93 miles) with 5 minutes of charging, while reducing energy consumption and increasing range by at least 10% in winter.
- Wide Temperature Range Heat Pump System: Can operate in environments from -30°C to 60°C, increasing thermal efficiency by 20% in winter and significantly mitigating the issue of reduced range in low temperatures.
- Power Performance: 0-100km/h acceleration is as fast as 2.9 seconds, with a combined range exceeding 1000 kilometers.
2. Ultimate Safety
- Blade Battery and CTB Technology: Uses the Blade Battery as a structural component integrated into the vehicle body, forming “Cell-to-Body” integration, enhancing collision resistance and body rigidity. For example, the BYD SEAL model has a torsional rigidity of 40,500 Nm/°.
- Exclusive Safety Architecture: The pure electric platform optimizes collision force transfer paths. The battery pack uses a high-strength aluminum honeycomb structure, enhancing intrusion resistance.
- Battery Thermal Management: Achieves stable operation in extreme weather conditions through an intelligent temperature control system.
3. Intelligent Driving and Software
- BYD OS Operating System: Independently developed in-car system achieves software and hardware decoupling, supporting rapid iteration and OTA upgrades, providing the foundation for advanced autonomous driving (such as L2+/L3 levels).
- Multi-Domain Fusion Architecture: Adopts designs such as intelligent power domain and body domain controllers, integrating drive, braking, and steering systems, enhancing response speed and collaborative efficiency.
- Sensor Compatibility: Supports LiDAR, cameras, and millimeter-wave radar. The 2025 SEAL is the first BYD model to be equipped with LiDAR.
4. Space and Design Optimization
- Low Center of Gravity and High Wheelbase-to-Length Ratio: The flattened battery layout lowers the vehicle height. A 50:50 axle load distribution improves handling. Shortening the front overhang and lengthening the wheelbase also free up more cabin space.
- Aerodynamics: Vehicle body drag coefficient is as low as 0.21 Cd (as seen in the X DREAM concept car), balancing aesthetics and energy efficiency.
- Modular Compatibility: Supports front-wheel drive, rear-wheel drive, and all-wheel drive layouts, covering A-segment to D-segment models, achieving full-size coverage.
5. Industry Collaboration and Upgrade
- Open Platform Strategy: e-Platform 3.0 is open to the entire industry, allowing developers to customize vehicle development based on the platform, accelerating the popularization of electrification.
- Continuous Iteration: The e-Platform 3.0 Evo, launched in 2024, further upgrades the electric powertrain, thermal management, and charging technology. The first model equipped with this platform is the Sea Lion 07 EV.
Typical Models and Applications
- First Model: The Dolphin was first launched in 2021, validating the platform’s performance.
- Flagship Model: The SEAL uses CTB technology and e-Platform 3.0 Evo, combining performance and intelligence.
- Commercial Vehicle Layout: A pure electric bus, e-Platform 3.0, was launched in 2024, expanding into the commercial sector.
Summary:
BYD’s e-Platform 3.0 solves the pain points of electric vehicles in terms of range, safety, intelligence, etc., through vertically integrating core technologies (battery, electric powertrain, thermal management) and modular design, while promoting industry technology sharing. Its subsequent Evo version and open ecosystem strategy further consolidate BYD’s leading position in the new energy field.
♯ What are the specific technical differences between BYD’s e-Platform 3.0 and e-Platform 3.0 Evo?
There are significant technical differences between BYD’s e-Platform 3.0 and e-Platform 3.0 Evo, mainly in powertrain, thermal management system, safety structure, charging technology, and overall integration.
- Powertrain Technology: e-Platform 3.0 uses an 8-in-1 electric drive system, while e-Platform 3.0 Evo is upgraded to 12-in-1 intelligent electric drive technology. This means that e-Platform 3.0 Evo has further improvements in the integration and performance of the powertrain, such as higher efficiency and stronger power output.
- Thermal Management System: e-Platform 3.0 Evo introduces efficient heat pump technology that can adapt to a wider temperature range, thereby optimizing battery performance and vehicle range. In contrast, e-Platform 3.0’s thermal management module is relatively simple and does not achieve such high integration and efficiency.
- Charging Technology: e-Platform 3.0 Evo supports full-spectrum intelligent fast charging technology, including ultra-fast charging and intelligent endpoint charging technology, which significantly improves the vehicle’s charging speed and intelligence. While e-Platform 3.0 also has certain fast charging capabilities, it does not reach the comprehensiveness and intelligence level of the Evo version.
- Safety Structure: e-Platform 3.0 Evo adopts the world’s first CTB (Cell to Body) vehicle safety architecture. This design integrates the battery pack directly into the vehicle structure, improving collision protection capability and overall vehicle safety. In contrast, e-Platform 3.0’s safety architecture is relatively traditional and does not use CTB technology.
- Intelligent Motion Control Technology: e-Platform 3.0 Evo adds intelligent motion control technology, further improving the vehicle’s driving experience and handling performance. This technology is not mentioned in e-Platform 3.0.
- Overall Integration: e-Platform 3.0 Evo has higher overall integration. For example, its 12-in-1 electric drive system and 16-in-1 thermal management module. These upgrades make the vehicle perform better in terms of energy consumption control, power output, and system coordination. In contrast, e-Platform 3.0 has lower integration and only supports an 8-in-1 electric drive system.
- Other Improvements: e-Platform 3.0 Evo also uses third-generation silicon carbide technology and uses stacked laser welding connections, increasing switching frequency and reducing stray inductance, thereby improving medium and low-speed range capability.
♯ How does the 8-in-1 electric powertrain system in BYD’s e-Platform 3.0 achieve a comprehensive efficiency of over 89%?
The 8-in-1 electric powertrain system in BYD’s e-Platform 3.0 achieves a comprehensive efficiency of over 89% through highly integrated design and multiple technical optimizations. This achievement is mainly due to the following aspects:
- Highly Integrated Design: The 8-in-1 electric powertrain system integrates eight key components: drive motor, reducer, drive motor controller, high-voltage distribution box (PDU), DC-DC converter, on-board charger (Bi-OBC), vehicle control unit (VCU), and battery management system (BMS). This highly integrated design reduces the volume and weight of the system, while also reducing losses, increasing power density, and improving overall efficiency.
- Improved Power Density and Volume Optimization: The integrated 8-in-1 electric powertrain system has a 20% increase in power density, while volume and weight are reduced by 10% respectively. This not only improves the system’s energy efficiency but also provides possibilities for optimizing the vehicle’s interior space.
- Advanced SiC (Silicon Carbide) Electronic Control Technology: BYD uses new SiC electronic control technology in e-Platform 3.0. This technology can significantly increase power density and achieve higher efficiency under high voltage conditions. For example, the application of SiC technology allows the efficiency of power devices to reach 99.7%, thereby further improving the overall efficiency of the entire electric drive system.
- Application of Hairpin Flat Wire Motor: The hairpin flat wire motor is one of the core components of the 8-in-1 electric powertrain system, with a maximum efficiency of 97.6%. This motor structure is compact and has good heat dissipation performance, which can effectively reduce the energy consumption and temperature during system operation, thereby improving overall efficiency.
- Optimization of Thermal Management System: The application of a new generation of wide temperature range high-efficiency heat pump technology enables the electric drive system to maintain efficient operation under different temperature conditions. This technology not only improves the system’s energy efficiency but also improves the overall performance of the battery pack, especially by extending the range in cold weather.
- Improvement of Comprehensive Efficiency: Before e-Platform 3.0, the comprehensive efficiency of BYD’s electric drive system was 86%. Through the integration and optimization of the above technologies, the comprehensive efficiency has been increased to 89%. Although this increase is only 3 percentage points, it is extremely challenging to improve efficiency by even one point in the context of the current high level of technological maturity.
BYD’s e-Platform 3.0’s 8-in-1 electric powertrain system achieves a comprehensive efficiency of over 89% through highly integrated design, advanced SiC electronic control technology, the application of hairpin flat wire motors, and the optimization of the thermal management system.
♯ What are the specific roles of Blade battery and CTB technology in improving the safety performance of BYD electric vehicles?
Blade battery and CTB technology play an important role in improving the safety performance of BYD electric vehicles, specifically in the following aspects:
- High Safety of Blade Battery: The Blade battery uses lithium iron phosphate material, which has high thermal stability and resistance to degradation, effectively preventing thermal runaway. Its unique aspect ratio design not only increases volume utilization (over 50%) but also shortens the length of the short-circuit loop, thereby reducing the risk of heating and reducing the failure rate. In addition, the Blade battery has passed the nail penetration test and remains without open flames or smoke in extreme conditions, further proving its excellent safety performance.
- Body-Integrated Design of CTB Technology: CTB (Cell to Body) technology deeply integrates the battery pack with the vehicle body structure, forming a “vehicle sandwich” structure. This design not only improves the torsional rigidity of the vehicle (reaching 40,000 Nm), but also optimizes the vehicle’s dynamic response and handling performance. In collision tests, BYD SEAL models equipped with CTB technology perform excellently. For example, in the double-sided pole impact test, the battery pack is only slightly deformed, the live parts are undamaged, and the high-voltage system quickly reduces voltage to a safe level, ensuring personnel safety.
- Enhanced Collision Safety: CTB technology significantly improves the overall impact resistance of the vehicle by rigidly connecting the Blade battery pack to the vehicle body. For example, in TOP Safety’s double-sided pole impact test, the deformation of the BYD SEAL equipped with CTB technology is significantly reduced (the maximum deformation of the main driver’s side pole impact is 183mm, 30% lower than the average value of traditional fuel vehicles), and the battery pack functions normally and can be reinstalled in a new car for normal use. In addition, the “sandwich” structure design of the Blade battery (similar to aluminum honeycomb panels) further enhances the overall strength of the battery pack, enabling it to withstand greater external impact.
- Improved Energy Density and Range Capability: CTB technology achieves higher energy density and volume utilization through a completely flat structure, which not only increases the range but also optimizes the vehicle’s space utilization. For example, a single battery pack can withstand the rolling of a 46-ton heavy truck, demonstrating its excellent structural stability.
- Quick Recovery Function: After a collision, vehicles equipped with CTB technology can quickly resume normal operation. For example, the battery pack of the BYD SEAL functions normally after a collision test and can be reinstalled in a new car and started, indicating that CTB technology not only improves safety but also enhances the practicality of the vehicle.
Blade battery and CTB technology significantly improve the safety performance of BYD electric vehicles through the synergy of optimizing energy transfer paths, enhancing structural strength, reducing failure rates, and improving collision safety in multiple aspects.
♯ What are the specific functions and advantages of the BYD OS operating system in supporting advanced autonomous driving?
The BYD OS operating system (BYD OS) demonstrates multiple specific functions and significant advantages in supporting advanced autonomous driving. These functions and advantages are mainly reflected in software and hardware decoupling, intelligent collaboration, perception and decision-making capabilities, and iteration speed.
- Software and Hardware Decoupling and Efficient Collaboration: The BYD OS operating system is based on the design concept of complete software and hardware decoupling. By building a common hardware driver layer, operating system layer, system service layer, and functional service layer, it achieves efficient decoupling and flexible configuration between software and hardware. This architecture not only increases the system’s computing power (by 30%) and interaction efficiency (by 50%) but also shortens the iteration cycle from two months to two weeks, reducing the iteration cycle by over 70%. In addition, BYD OS uses a Service-Oriented Architecture (SOA) with technical characteristics such as high cohesion, low coupling, high reliability, and low latency, which can support cross-platform applications and hardware upgrades, providing a high-standard collaboration system for high-level autonomous driving.
- Intelligent Domain Control Architecture: The BYD OS operating system combines an intelligent domain control architecture, including an intelligent power domain, intelligent body domain controller, intelligent cockpit domain, and intelligent driving domain. This architecture can achieve more efficient resource allocation and task management, thereby improving the overall intelligence level of the system.
- High-Precision Perception and Decision-Making Capabilities: BYD’s advanced intelligent driving system is equipped with various high-precision perception devices, such as lidar, millimeter-wave radar, cameras, and ultrasonic sensors, which can achieve comprehensive and precise perception. At the same time, its independently developed perception and decision-making modules can quickly identify and respond to complex road conditions, such as highway navigation, automatic parking, mapless urban navigation (CNOA), and other functions. These functions enable BYD’s autonomous driving system to flexibly plan optimal routes without high-precision maps and achieve precise parking in extreme scenarios.
- Rapid Iteration and Seamless Upgrade: The BYD OS operating system supports OTA (Over-The-Air) full push. New functions can be seamlessly pushed to all users without interruption or downgrade. This rapid iteration capability enables BYD to continuously optimize and upgrade its autonomous driving functions, ensuring that users always experience the latest technological achievements.
- Safety and Reliability: In terms of safety, the BYD OS operating system avoids functional failure caused by domain controller crashes through software and hardware failure response strategies. In addition, its central computing platform works collaboratively with regional controllers and uses distributed control algorithms to ensure millisecond-level response speed, thereby ensuring the safety and reliability of autonomous driving.
- Full-Stack Self-Development Capability and Openness: BYD has built a vehicle-level fusion perception platform through full-stack self-development capability, which integrates sensor data from cameras, radars, etc., with real-time vehicle data to achieve comprehensive and precise perception. At the same time, the openness of BYD OS enables flexible configuration of various hardware interfaces, supporting various autonomous driving solutions.
- Ability to Handle Complex Scenarios: BYD’s advanced intelligent driving system can provide continuous, seamless, and high-level autonomous driving experience in complex and dynamic actual driving environments. For example, in scenarios such as turning at T-junctions, darting pedestrians, and encountering abnormal obstacles while driving on the highway, the system can quickly identify risks and accurately brake to avoid collisions. In addition, the Yi Si Fang parking function can achieve precise parking in extreme scenarios.
The BYD OS operating system provides strong support for advanced autonomous driving through advantages such as software and hardware decoupling, intelligent domain control architecture, high-precision perception and decision-making capabilities, rapid iteration and seamless upgrade, safety assurance, and full-stack self-development capability.
♯ What innovative technologies are used in BYD’s e-Platform 3.0 for space utilization and design optimization?
BYD’s e-Platform 3.0 utilizes multiple innovative technologies for space utilization and design optimization, specifically as follows:
- Efficient 8-in-1 Electric Powertrain: e-Platform 3.0 adopts the world’s first “8-in-1” electric powertrain, integrating eight key components including driving, charging, control, and management. This highly integrated design not only reduces the weight and volume of the system but also frees up more interior space, improving space utilization. In addition, this design effectively reduces the number of system components, thereby further optimizing space utilization.
- Blade Battery Technology: As the energy core, the innovative design of the Blade battery further reduces battery thickness, thereby freeing up more interior space. At the same time, the use of the Blade battery also improves the overall energy density and range of the vehicle, further optimizing the layout of the interior space.
- CTB (Cell to Body) Technology: CTB technology is BYD’s advanced body structure design that integrates the battery as part of the body structure. This not only improves body rigidity and dynamic performance but also significantly improves space utilization. For example, the BYD SEAL achieves a lower body height and larger interior space through CTB technology.
- Shorter Front and Rear Overhangs, Longer Wheelbase: The design concept of e-Platform 3.0 includes shortening the front and rear overhangs and increasing the wheelbase, which significantly expands the interior passenger space. For example, the BYD SEAL achieves a lower body stance and larger wheelbase through this design, thus providing more freedom for aerodynamic design and reducing the drag coefficient to 0.21 Cd.
- Low Center of Gravity Design: The e-Platform 3.0 platform adopts a 50:50 axle load distribution design, which lowers the vehicle’s center of gravity. At the same time, the small moment of inertia further improves the vehicle’s handling and stability. This low center of gravity design not only enhances the driving experience but also provides more possibilities for interior space layout.
- Extendibility of Aesthetic Design: Based on the e-Platform 3.0 platform, BYD has also achieved breakthroughs in aesthetic design. For example, the BYD Dolphin adopts a new marine aesthetic design language, utilizing the plasticity and variability of the platform technology to achieve a lower visual center of gravity and smoother body lines, thereby reducing the drag coefficient and improving aerodynamic performance.
- Full-Level High-Efficiency Development System: e-Platform 3.0 builds a full-level high-efficiency development design system covering the entire vehicle, system, and components. This system breaks the boundaries of traditional separate systems, making the overall vehicle resource utilization more efficient and further freeing up interior space.
BYD’s e-Platform 3.0 achieves significant improvements in space utilization and design optimization through multiple innovative technologies such as the efficient 8-in-1 electric powertrain, Blade battery technology, CTB technology, low center of gravity design, and a full-level high-efficiency development system.
