What does PEU mean in new energy vehicles?
2 Answers
PEU is the Power Electronic Unit in new energy vehicles, one of the most important components that distinguishes them from traditional fuel-powered vehicles. Relevant information is as follows: 1. Introduction: Currently, most motor drive systems integrate functions such as MCU (Motor Control Unit), DC-DC, OBC (On-Board Charger), and PTC (On-Board Heater). This power integration unit is called PEU. 2. Testing: Through PEU aging tests, the performance of the PEU in electric vehicles under various working conditions can be comprehensively evaluated. Besides PEU, new energy vehicles are often also equipped with VCU and BMS. 3. VCU: The Vehicle Control Unit in new energy vehicles is the core electronic control unit that implements vehicle control decisions. It is generally only equipped in new energy vehicles, as traditional fuel-powered vehicles do not require this device.
As an electric vehicle owner, PEU is no mystery. It stands for Power Electronic Unit, known in Chinese as the power electronic control unit. Simply put, it's a core component in new energy vehicles, specifically responsible for converting the battery's DC power into AC power usable by the motor, while also managing the energy recovery system, such as charging the battery during braking. When I drove an electric car before, I experienced sudden power loss, only to later find out it was due to a minor fault in the PEU, since it also controls stable power output to prevent overload. During routine maintenance, this unit is hidden at the bottom of the vehicle cabin and doesn't require DIY handling, but it's essential to have professionals regularly check for loose contact connections. If it malfunctions, the car might stall or experience poor acceleration, seriously affecting safety. That's why I always remind everyone to pay attention to this little black box.
