Design and Manufacturing Perspective

1. Question Type: Technical Explanation

Question: How do the double-layer supercapacitor and lithium battery work together to achieve coordinated current output during heavy-duty truck startup?

Answer: Upon receiving the start command, the double-layer supercapacitor can preferentially bear most of the startup inrush current within milliseconds. Immediately afterwards, the lithium battery enters a controlled output state, compensating for the voltage drop of the double-layer supercapacitor and continuously supplying the required startup current.

2. Question Type: Technical Explanation

Question: In the application scenario of "continuous operation of the parking air conditioner for 12 hours," what is the core role of the double-layer supercapacitor? Does it participate in the continuous power supply process of the air conditioner?

Answer: For continuous and stable discharge scenarios like parking air conditioners, the main power source is the high-energy-density lithium battery; the double-layer supercapacitor does not undertake the primary power supply task. Its core value lies in key moments: at the moment the air conditioner starts, it quickly compensates for the peak starting current required by the compressor, preventing a sharp drop in lithium battery voltage and smoothing out peak loads in the entire power system.

3. Question Type: Technical Explanation

Question: The entire system ensures normal operation at -35°C through the "low-temperature heating" function. However, if the lithium battery output capacity still decreases during the initial heating start-up, can the double-layer supercapacitor directly output a large current at -35°C without relying on heating, working in conjunction with the battery to ensure startup?

Answer: Yongming SDB series double-layer supercapacitors have a wide temperature adaptability of -40°C to 85°C, fully covering the operating temperature range of the entire system. Even in extreme low-temperature environments of -35°C or even -40°C, it can still stably output hundreds of amperes of current, compensating for the performance degradation of the lithium battery under low-temperature conditions. Together with the low-temperature heating function, it forms a double guarantee, ensuring reliable cold starts.

4. Question Type: Technical Explanation

Question: Lithium-ion batteries have a cycle life of several thousand cycles or more, while double-layer supercapacitors (DLCs) have a cycle life (e.g., 500,000 cycles) far exceeding that of lithium-ion batteries. When integrating the two, how can the bottleneck effect be avoided through system lifespan synergy design?

Answer: The SDB series DLCs have a single-cell cycle life of up to 500,000 cycles and a module cycle life exceeding 100,000 cycles, with an ultra-long cycle life of hundreds of thousands of cycles far superior to lithium-ion batteries. During system integration, DLCs can significantly reduce the high-current impact on the battery, avoiding the lifespan loss caused by peak discharge in lithium-ion batteries, thereby extending the overall lifespan of the entire system and effectively avoiding the bottleneck effect.

5. Question Type: Technical Explanation

Question: Vehicles may be parked for extended periods. What is the self-discharge rate of the DLC? After long-term storage, will its auxiliary starting function still be effectively guaranteed?

Answer: The accompanying intelligent lithium battery system supports intelligent sleep mode. When a set period of no-load operation is detected, it automatically enters sleep mode to save power, keeping overall energy consumption extremely low. When the system detects a charging/discharging demand, it can quickly wake up and resume operation. Even after long-term storage, it maintains good working condition, ensuring the stable and effective auxiliary start-up function.

6. Question Type: Technical Explanation

Question: If multiple double-layer supercapacitors are used in series, will there be an issue of uneven voltage between individual cells? Will this issue affect the reliability of the "one-button forced start" action?

Answer: The reliability of the "one-button forced start" action is fully guaranteed. Yongming double-layer supercapacitors undergo 100% capacity and resistance matching testing before leaving the factory. Capacitance and ESR (equivalent series resistance) tolerances are strictly controlled within 5%, ensuring consistency between individual cells from the source. In practical applications, the multi-capacitor series-parallel module is also equipped with a dedicated balancing circuit. When a deviation in individual cell voltage is detected, the circuit will actively initiate voltage balancing adjustment, providing double protection for product application reliability.

7. Question Type: Technical Explanation

Question: Double-layer supercapacitors have rapid charge and discharge characteristics. If the startup process experiences a pause, leading to excessively long startup time and increased capacitor temperature, will this cause over-discharge of the entire system, resulting in insufficient startup capacity?

Answer: The system is equipped with multiple protection functions, including overcharge, over-discharge, and over-temperature protection. It can monitor the voltage and temperature of individual cells in real time. Once an anomaly is detected, it will block risky conditions such as overcharge/over-discharge within milliseconds. When the truck battery is unexpectedly depleted, the intelligent lithium battery has a built-in 10% emergency power reserve program, which can start the vehicle through the "one-click forced start" function, effectively avoiding the risk of breakdown in the wild.

8. Question Type: Design Support

Question: Given the limited space in the vehicle, how should the size, weight, and installation method of the double-layer supercapacitor module be balanced to meet performance requirements without affecting the layout of other electronic systems in the vehicle?

Answer: Double-layer supercapacitors boast ultra-high power density. Only 11 30F, 16*25mm cells connected in series are needed to stably output hundreds of amperes of current across a full temperature range of -35℃ to 60℃, fully meeting startup performance requirements. This module is compact and lightweight, flexibly adaptable to various installation scenarios, and will not interfere with the layout of other vehicle electronic systems.

9. Question Type: Technical Explanation

Question: What is the safety level of the double-layer supercapacitor itself? Will combining it with a lithium battery affect the overall system safety certification?

Answer: Yongming's double-layer supercapacitors also adhere to automotive-grade design principles, with core materials and structural design possessing high safety. Combining it with a lithium battery not only does not affect the overall system safety certification, but also adds a "power buffer" safety barrier—effectively preventing the lithium battery from experiencing sudden and drastic temperature rises and voltage drops during high-current charging and discharging, improving the system's safety and stability under extreme conditions.

10. Question Type: Technical Explanation

Question: How can system-level diagnostics and predictive maintenance be achieved by monitoring the health status, energy storage level, and usage history of double-layer supercapacitors to ensure vehicles always have reliable emergency start capabilities?

Answer: A dedicated capacitor monitoring module is connected to a 4G intelligent monitoring system to collect and analyze core parameters in real time. Preset health thresholds and lifespan prediction models, combined with vehicle operating conditions, are used to accurately analyze capacitor health status and predict potential failure risks. The system pushes diagnostic results to the vehicle terminal or backend management platform via the 4G module, issuing timely warnings for insufficient energy storage and performance degradation, prompting maintenance personnel to address these issues promptly. Simultaneously, the "one-click emergency start" control logic is linked to ensure the capacitor is always within its effective energy storage range, guaranteeing reliable emergency start capabilities at all times.

### Consumer Perspective

1. Question Type: Technical Verification

Question: Using an SDB 3.0V 30F double-layer supercapacitor and a 4G lithium battery, is the one-click emergency start module reliable for trucks in extremely cold environments or after prolonged parking?

Answer: Reliable. This integrated system features low-temperature heating, supporting remote preheating of the lithium battery. It ensures cell safety in low-temperature environments while withstanding extreme cold, operating stably within a wide temperature range of -35℃ to 60℃, providing all-weather vehicle protection. The Yongming SDB series double-layer supercapacitor itself possesses excellent low-temperature resistance, maintaining stable high current output even in extremely cold environments down to -40℃, perfectly compatible with the "one-button start" function.

2. Question Type: Scenario Verification

Question: If the vehicle is parked with the air conditioning on for an extended period, causing the battery to completely drain, can the vehicle still be successfully started using the double-layer supercapacitor?

Answer: Yes, it can be started successfully. The intelligent connectivity system monitors the battery level in real time and issues a low-battery warning when the level is low. In addition, the system reserves 10% emergency power for the one-button start function, which users can trigger via the app to start the vehicle smoothly.

3. Question Type: Life Cycle Cost

Question: How often do the starting-related battery components need to be replaced? Answer: The SDB series double-layer supercapacitors boast a single-cell cycle life of up to 500,000 cycles and a module cycle life exceeding 100,000 cycles, significantly surpassing the lifespan of lithium batteries. In system integration applications, double-layer supercapacitors can substantially reduce the high-current surges faced by the battery, preventing damage to lithium batteries due to peak discharge and extending the overall system lifespan. Under normal use, the replacement cycle is expected to be 8-10 years or more.

4. Question Type: Durability Analysis

Question: Can the entire system withstand frequent start-stop operations without performance degradation?

Answer: Yes. The core component, the SDB 3.0V 30F double-layer supercapacitor, retains over 80% of its capacity after 100,000 charge-discharge cycles, demonstrating excellent durability and the ability to stably support high-frequency start-stop operations without significant performance degradation.

5. Question Type: Addressing Pain Points

Question: If the vehicle is left idle for an extended period, will the battery be damaged due to depletion? How can I check the remaining battery charge?

Answer: The battery will not easily be damaged by low power. The system supports intelligent sleep mode. When a set time is reached after a period of no load, it will automatically enter sleep mode to save power, maintaining a healthy state even during long-term parking. Simultaneously, the intelligent interconnection platform can display the remaining battery power in real time and will proactively issue a warning notification when the power is low. Users can remotely monitor key information such as battery power and health in real time.

6. Problem Type: Directly Addressing Pain Points

Problem: If the 4G signal is interrupted, will the dual-layer supercapacitor still work normally with the parking start-stop system? Will the truck be unable to start due to the failure of remote monitoring?

Answer: The dual-layer supercapacitor will work normally with the parking start-stop system and will not be unable to start the truck due to a 4G signal interruption. The 4G module is only responsible for "remote monitoring" functions (such as uploading power data, pushing fault warnings, and checking equipment status), which are auxiliary functions. The core working logic of the dual-layer supercapacitor, such as charging and discharging control and start-stop triggering, is executed independently by the hardware-level BMS battery management system and does not rely on a 4G signal.

7. Question Type: Reliability Verification

Question: Can the one-button emergency start module, composed of an SDB 3.0V 30F double-layer supercapacitor and a 4G lithium battery, reliably operate under different climates and seasons?

Answer: Yes. The double-layer supercapacitor operates within a temperature range of -40℃ to 85℃, fully covering the lithium battery's operating temperature range of -35℃ to 60℃. Regardless of high temperatures, extreme cold, or seasons with large temperature differences, this integrated solution can stably perform and adapt to the usage requirements of different climatic environments.

8. Question Type: Daily Practicality

Question: Is daily maintenance and management complex?

Answer: Not complex; maintenance-free operation is possible. The SDB series double-layer supercapacitor has a single-cell cycle life of up to 500,000 cycles and a module cycle life exceeding 100,000 cycles, far superior to lithium batteries. In the system, the double-layer supercapacitor significantly reduces the impact of high current on the battery, preventing damage to the lithium battery due to peak discharge, extending the lifespan of the entire system, and requiring no complex maintenance or management operations in daily use.

9. Question Type: Stability Verification

Question: Is the intelligent lithium battery safe and stable during long-term use in heavy vehicles?

Answer: Yes, it is safe and stable. The intelligent lithium battery features "automotive-grade Class A safety protection," employing multiple physical protection designs including puncture resistance, collision resistance, and compression resistance. It can withstand extreme environments from -35℃ to 60℃ and has IP65 waterproof and dustproof capabilities. It has also passed a continuous 48-hour vibration test according to the most stringent Type D requirements of GB/T 5008.1-2023 standard. The built-in BMS battery management system and AI battery health management system can monitor the battery's operating status in real time, providing early warnings of abnormal risks and ensuring long-term safe and stable use.

10. Question Type: Cost Advantage

Question: Compared to traditional lead-acid batteries, does the one-button emergency start module, composed of an SDB 3.0V 30F double-layer supercapacitor and a 4G lithium battery, have a cost advantage?

Answer: It has a long-term comprehensive cost advantage. Traditional lead-acid batteries have a lifespan of about 2 years, while the lithium battery and double-layer supercapacitor synergistic system effectively protects the lithium battery from peak discharge damage by buffering large current surges through the double-layer supercapacitor. The expected lifespan can reach 8 to 10 years, which greatly reduces the frequency of battery replacement and maintenance costs. Although the initial investment is slightly higher, the long lifespan, maintenance-free operation and high reliability make it more cost-effective in the long run.