Design and Manufacturing Perspective
1. Question Type: Technical Explanation
Question: How do the Electric Double Layer Capacitor and lithium battery work together to output current at the moment of heavy-duty truck startup?
Answer: Upon receiving the startup signal, the Electric Double Layer Capacitor absorbs the majority of the inrush current within milliseconds. Subsequently, the lithium battery begins controlled output to replenish the voltage drop of the Electric Double Layer Capacitor, providing continuous current.
2. Question Type: Technical Explanation
Question: In a scenario where the parking air conditioner runs continuously for 12 hours, what is the main role of the Electric Double Layer Capacitor? Does it participate in the continuous power supply of the air conditioner?
Answer: In continuous and stable discharge scenarios like parking air conditioners, the high-energy-density lithium battery is the primary power source, and the Electric Double Layer Capacitor does not primarily participate. Its core role is evident at critical moments: at the moment the air conditioner starts, it compensates for the compressor’s starting current, preventing a sudden drop in lithium battery voltage and smoothing out the system’s power consumption “peak.”
3. Question Type: Technical Explanation
Question: The entire system relies on a “low-temperature heating” function to ensure operation at -35°C. However, the lithium battery’s output capacity still decreases during the initial heating phase of system startup. Can the Electric Double Layer Capacitor, without relying on heating, directly output a large current at -35°C to work in tandem with the battery for startup?
Answer: YMIN SDB series Electric Double Layer Capacitors have a wide temperature adaptability of -40°C to 85°C, covering the entire system’s operating temperature range. Even at -35°C or -40°C, they can still stably output hundreds of amperes of current, compensating for the low-temperature performance degradation of lithium batteries. Working in conjunction with the low-temperature heating function, they ensure cold starts.
4. Question Type: Technical Explanation
Question: Batteries have a cycle life of thousands of cycles. The cycle life of Electric Double Layer Capacitors (e.g., 500,000 cycles) far exceeds that of batteries. When integrating the two, how can the system’s lifespan be designed collaboratively to avoid a bottleneck effect?
Answer: The SDB series Electric Double Layer Capacitors boast a single-cell cycle life of up to 500,000 cycles and a module life exceeding 100,000 cycles, reaching hundreds of thousands of cycles—far surpassing the cycle life of lithium batteries. Integrating the Electric Double Layer Capacitor with the lithium battery in a system significantly reduces high-current surges in the battery, preventing peak discharges that could damage its lifespan, extending the overall system lifespan, and avoiding the bottleneck effect.
5. Question Type: Technical Explanation
Question: What is the self-discharge rate of the Electric Double Layer Capacitor if the vehicle is parked for extended periods? Will its auxiliary start function remain effective after long-term storage?
Answer: The intelligent lithium battery supports an intelligent sleep mode. It enters sleep mode to conserve power after a certain period of no load, resulting in extremely low overall energy loss. The system wakes up when charging or discharging is detected, maintaining a healthy state even after long-term parking.
6. Question Type: Technical Explanation
Question: If multiple Electric Double Layer Capacitors are used in series, will there be issues with individual cell voltage imbalance? Will this affect the reliability of the one-button start function? Answer: Reliability is fully guaranteed. YMIN’s Electric Double Layer Capacitors undergo 100% capacity and resistance matching before leaving the factory, with capacitance and ESR tolerances controlled within 5%, ensuring consistency of individual cells. In practical applications, balancing circuits are equipped in series-parallel module circuits with multiple capacitors. When there is a deviation in the voltage of a single cell, the circuit will actively perform voltage balancing, thus providing double protection for product reliability.
7. Question Type: Technical Explanation
Question: Electric Double Layer Capacitors have rapid charge and discharge characteristics. If the startup process is delayed for too long, the temperature rises. Will this lead to over-discharge of the entire system, resulting in insufficient capacity for startup?
Answer: Multiple protection functions, including overcharge and over-discharge protection, are required. Real-time monitoring of individual cell voltage and temperature is implemented to prevent overcharge/over-discharge at the millisecond level. In the event of an unexpected depletion of the truck battery, the intelligent lithium battery has a built-in 10% emergency power program for forced restart, avoiding the risk of breakdown in the field.
8. Question Type: Design Support
Question: Given the limited space in a vehicle, how can a balance be struck between the size, weight, and installation method of a Electric Double Layer Capacitor module to meet performance requirements without affecting the layout of other electronic systems in the vehicle?
Answer: Electric Double Layer Capacitors have ultra-high power density. Just 11 30F 16*25 cells connected in series can provide hundreds of amperes of current covering the entire module’s temperature range of -35℃ to 60℃.
9. Question Type: Technical Explanation
Question: What is the safety level of the Electric Double Layer Capacitor itself? Will the overall safety certification of the system be affected after combining it with a lithium battery?
Answer: Our Electric Double Layer Capacitor products also follow automotive-grade design principles, with core materials and structures possessing high safety. In the system, the introduction of the Electric Double Layer Capacitor effectively adds a “power buffer” safety barrier. During high-current charging and discharging, it can prevent the lithium battery from experiencing sudden and drastic temperature rises and voltage drops, improving the system’s safety under extreme conditions.
10. Question Type: Technical Explanation
Question: How can system-level diagnosis and predictive maintenance be achieved by monitoring the health status, energy storage level, and usage history of Electric Double Layer Capacitors to ensure reliable emergency start capability of vehicles at all times?
Answer: A dedicated capacitor monitoring module is connected to the 4G intelligent monitoring system to collect and analyze core parameters in real time; health thresholds and lifespan models are set, and combined with the vehicle’s operating conditions, algorithms analyze the capacitor’s health status to predict potential failure risks; the system pushes the diagnostic results to the vehicle terminal or backend management platform via the 4G module, issuing warnings for insufficient energy storage, performance degradation, etc., prompting timely maintenance; simultaneously, the “one-click forced start” logic is linked to ensure the capacitor is always within the effective energy storage range, guaranteeing reliable emergency start capability at all times.
### Consumer Perspective
1. Question Type: Technical Verification
Question: Can a truck reliably start after being parked in extremely cold conditions or for an extended period, using a one-click emergency start module composed of an SDB 3.0V 30F Electric Double Layer Capacitor and a 4G lithium battery?
Answer: Yes. The integrated system features low-temperature heating, supporting remote preheating of the lithium battery to ensure safe operation even in low-temperature environments. It operates across a wide temperature range of -35℃ to 60℃, guaranteeing worry-free driving performance in all weather conditions. The YMIN SDB series Electric Double Layer Capacitor 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 car is parked with the air conditioning on for an extended period and the battery is completely depleted, will the Electric Double Layer Capacitor still be able to start the car successfully?
Answer: The intelligent interconnection system will issue a low battery warning and monitor the battery in real time. Additionally, the system reserves 10% battery for a one-button start function, allowing emergency car start-up via the app.
3. Question Type: Life Cycle Cost
Question: How often should the starter battery be replaced? Answer: The SDB series Electric Double Layer Capacitors boast a single-cell cycle life of up to 500,000 cycles and a module life exceeding 100,000 cycles, reaching hundreds of thousands of cycles, far surpassing the cycle life of lithium batteries. Integrating the Electric Double Layer Capacitor with the lithium battery in the system significantly reduces high-current surges in the battery, preventing peak discharges that damage its lifespan and extending the overall system lifespan. The expected normal service life is 8-10 years or more.
4. Question Type: Durability Analysis
Question: Can the system withstand frequent start-stop operations without performance degradation?
Answer: Yes. The SDB 3.0V 30F retains >80% capacity after 100,000 charge-discharge cycles, supporting high-frequency start-stop operations without performance degradation.
5. Question Type: Addressing Pain Points
Question: Will the battery deteriorate if the car is not used for a long time? How can I know how much charge is left in the battery? Answer: Supports intelligent sleep mode. It enters sleep mode to save power after a certain period of no load. The system wakes up when charging or discharging is detected, maintaining a healthy state even during long-term parking. The intelligent interconnection platform can monitor the battery level in real time and issue a warning notification when the battery is low, allowing for remote real-time monitoring of battery level, health, and other information.
6. Problem Type: Direct Pain Point Addressing
Problem: If the 4G signal is interrupted, will the dual-layer supercapacitor still work normally with the parking start-stop system? Will the truck fail to start due to remote monitoring failure?
Answer: The 4G module is only responsible for “remote monitoring” (such as uploading battery level, fault warnings, and checking status), which is an auxiliary function; the core logic of charging and discharging control and start-stop triggering of the dual-layer supercapacitor is executed independently by the hardware BMS battery management system, without relying on the 4G signal.
7. Problem Type: Reliability Verification
Problem: Can the one-button emergency start module composed of an SDB 3.0V 30F dual-layer supercapacitor and a 4G lithium battery reliably work in different climates and seasons? Answer: The operating temperature range of the Electric Double Layer Capacitor is -40℃ to 85℃, fully covering the battery operating temperature range of -35℃ to 60℃. The integrated system can operate reliably in different climates and seasons.
8. Question Type: Daily Practicality
Question: Is daily maintenance and management complex?
Answer: The SDB series Electric Double Layer Capacitor has a single-cell cycle life of up to 500,000 cycles and a module cycle life exceeding 100,000 cycles, with a cycle life of hundreds of thousands of cycles, far exceeding the cycle life of lithium batteries. Integrating the Electric Double Layer Capacitor with the lithium battery in the system significantly reduces the impact of high current on the battery, avoiding peak discharges that damage its lifespan, extending the overall system lifespan, and achieving maintenance-free operation.
9. Question Type: Stability Verification
Question: Is the intelligent lithium battery safe and stable during long-term use in heavy vehicles?
Answer: It features “Automotive-grade Class A safety protection,” employing multiple physical protection designs including puncture resistance, collision resistance, and crush resistance. It is adaptable to extreme environments ranging from -35°C to 60°C, has IP65 waterproof and dustproof rating, and has passed a continuous 48-hour vibration test according to the most stringent Type D standard in GB/T 5008.1-2023. It incorporates a built-in BMS and AI battery health management system to monitor battery status in real time and provide early warnings of abnormalities.
10. Question Type: Cost Advantage
Question: Does the one-button emergency start module, composed of an SDB 3.0V 30F Electric Double Layer Capacitor and a 4G lithium battery, have a cost advantage compared to traditional lead-acid batteries?
Answer: Lead-acid batteries have a lifespan of about 2 years, while the lithium battery and Electric Double Layer Capacitor synergistic system effectively protects the lithium battery from peak discharge damage by buffering large currents through the Electric Double Layer Capacitor. The expected lifespan can reach 8-10 years. This system significantly reduces replacement and maintenance costs. Although the initial investment is higher, the solution has better overall cost-effectiveness in the long run due to its long lifespan, maintenance-free operation, and high reliability.
Post time: Jan-27-2026