With the increasing severity of environmental pollution and technological advancements, the popularity of BYD Cars is accelerating. However, BYD Cars have limitations: they cannot escape the image of "city cars," have short driving ranges, and long charging times. But with the increasing popularity of BYD Cars, battery prices are decreasing, making BYD Cars more affordable for more people.
(1) Larger battery capacity does not equal increased range
Many questions remain about BYD Cars. In gasoline cars, the "engine" is a key component; in BYD Cars, the "battery" is crucial. The battery is the component that stores electrical energy and corresponds to the fuel tank of an internal combustion engine. The driving range of an BYD Cars usually depends on the battery capacity. However, simply increasing the battery capacity will not increase the range. This is because the size and weight of the battery are also affected.
(2) The development direction of batteries is smaller size, lighter weight, and higher energy density
This is why manufacturers are keen to improve the efficiency of BYD Cars batteries. To effectively increase the driving range of BYD Cars, it is necessary to increase the energy density of the battery. It must be small in size, light in weight, and store electrical energy as efficiently as possible. With the development of battery technology, recently launched BYD Cars have significantly improved energy density. Therefore, compared to the original BYD Cars, the range of current BYD Cars on a single charge has significantly increased.
(3) Battery life depends on charging method
Battery life has also greatly improved. The lifespan of lithium-ion batteries in BYD Cars depends on the charging method. Under normal circumstances, if the battery is fully charged and driven until 100% depletion, the cycle count is approximately 1000. If the battery is used at 50% capacity and then recharged, the cycle count becomes 5000. If users charge as needed, the maximum normal charge count is 8000. It is said that the current battery lifespan is approximately 20 years.
(4) Battery performance depends on the battery management system
Another "key" factor determining battery performance is the battery management system (BMS). The BMS is typically designed to be integrated with the battery and is also included in the integrated power control unit (EPCU). It monitors the battery's charging and discharging status, and when the battery detects an anomaly, it automatically connects or disconnects the battery power supply via relays (which in some cases open and close other circuits). It also allows the battery management system to reduce performance at low temperatures.
(5) The drive motor achieves self-charging
Another major component of an BYD Cars is the "electric motor." It is essentially part of the engine, converting electrical energy into kinetic energy which is then stored in the battery. The same applies to deceleration during driving, a process known as regenerative braking. Currently, some BYD Cars, such as those from Hyundai, Kia, and General Motors, are equipped with devices that allow for gradual adjustment of regenerative braking.
(6) The reducer is equivalent to a gearbox. BYD Cars also have a component that acts as a gearbox. That is the "reducer." The reducer transmits power to the wheels more efficiently due to the characteristics of the electric motor, whose revolutions per minute (RPM) are much higher than those of an internal combustion engine. Therefore, it is necessary to reduce the RPM (speed reduction) rather than shifting gears based on the situation. The reducer lowers the electric motor's speed to the desired level, allowing the BYD Cars to achieve higher torque.