For consumers, high-voltage batteries generally refer to batteries with a voltage above 48V, which are called high-voltage batteries. In fact, this cannot be said wrong, nor can it be said right, so the difference between high-voltage batteries and low-voltage batteries is different. Let's take a look:
For high-power battery applications, lithium-ion batteries can be used as an alternative chemical battery, mainly because of its high energy density. Today's electric vehicles and hybrid electric vehicles use NiMH batteries. If lithium-ion batteries are used, their energy storage density will be increased by 400 percent. However, in order for lithium-ion batteries to remain reliable over thousands of charge and discharge cycles, the battery system must address a number of technical challenges.
The performance of a lithium-ion battery depends on the battery temperature and life, the battery charge and discharge rate, and the state of charge (SOC). These factors are not independent. For example, a lithium-ion battery will generate heat when discharged, thereby increasing the discharge current. This has the potential to create a thermal runaway condition and lead to catastrophic failure. In addition, charging a lithium-ion battery to 100 SOC or discharging it to 0% SOC will rapidly reduce its capacity. Therefore, the operation of the lithium-ion battery must be limited to a certain SOC range, such as 20% to 80%, when the available capacity is only 60% of the specified capacity. Not only that, lithium-ion batteries also have a flat discharge curve, in which a 1% SOC change may only show a voltage difference of a few millivolts. To fully utilize the available voltage range of the battery, the battery system must monitor the battery voltage (which directly corresponds to the SOC) very accurately.
rechargeable battery, has become one of the indispensable daily necessities of the information age. Its wide application has successfully liberated many electrical equipment and instruments that could not be moved, and promoted the rapid development of many industries such as electronics, information, and transportation. Although lithium batteries have begun to be used in electric vehicles, the energy storage density of current lithium batteries is still insufficient to 1/5 the energy density of gasoline fuel. Therefore, it is urgent to develop battery materials with better performance.