What is the difference between traction battery and starter battery?

Many friends in life don’t know much about batteries. Recently, I have also read about traction batteries and starting batteries. My understanding is that traction batteries have relatively large internal resistance, but they have better stability and strong free-wheeling ability; while starting It goes without saying that the battery requires a strong instantaneous high-current discharge capability and a smaller internal resistance. However, what is the difference between a traction battery and a starting battery? The following author will introduce to you: 　　 In terms of charging: the traction battery is charged with a special charger, usually after the end of the work. Generally, 20%-100% of the battery must be discharged. Charging. The starting battery is always charged when the machine is working (at the same time it is regulated).　　In terms of discharge: traction batteries are suitable for long-term continuous discharge. It allows a certain degree of deep discharge. Generally, the manufacturer recommends not to discharge more than 80%, but in practice, it has been found that the impact of 100% deep discharge on the performance and life of the battery is much smaller than that of other types of batteries. Starter batteries cannot be used for deep discharge. Generally, it is required to discharge more than 20%. To recharge. The starting battery is suitable for large current discharge in a short time. For example, when starting a vehicle in winter, it is sometimes required to continuously discharge a current of more than 500A within three seconds. (For a 100AH u200bu200bbattery).　　In terms of manufacturing, traction batteries usually use tubular positive plates, while the positive plates of starter batteries are paste-coated plates. The pole plate of the traction battery is thicker, and the pole plate of the starting battery is thinner.　　 Starting battery cannot replace traction battery. The electric vehicle battery is a lead-acid cotton lotus root battery. Its discharge is long-lasting, but the instantaneous discharge is not high. Its electrolyte is not 1.28 sulfuric acid, but a chemical potion and electrode plates to generate voltage and current. The separator inside has a water absorption effect. The electrolyte is not easy to dry up, and the electrolyte does not need to be checked frequently. The car battery is a starter battery, and its instantaneous discharge can reach hundreds of amperes. Its electrolyte is 1.28 sulfuric acid and the plates generate voltage and current. Cars The liquid level of the battery should be 10-15 mm higher than the electrode plate. If it is lower than the electrode plate, the battery will be seriously damaged. Check the liquid level of the electrolyte from time to time. If you use a car battery instead, a 20AH battery for an electric car, you Need to replace the car battery 60AH in order to reach the discharge time of the electric car.　　Through the above introduction, I believe you have some understanding of the difference between traction battery and starter battery. I hope the above can bring you help. Previous: What kind of electric vehicle battery is scrapped?