BXV series: Valeo series of products, this product negative diode pressure mounted on the motor back cover, according to the size of the power of the diode the number of diodes are not the same as the 6 tube, 8 tube, 12 tube, etc., this product is large; with a back cover products, there is no negative plate, the back cover instead of the negative plate, the cost of a relative reduction in the rectifier bridge connection has two kinds of triangular connection and star connection, suitable for the use of different models of motor! Series rectifier bridges require compact design for easy installation and space saving, adopting miniaturized design while maintaining high performance and reliability; the negative plate is reduced and the negative monotube is pressed on the back cover, optimizing the structure, making the product lighter in weight and smaller in size, the advantages of high power generation efficiency include high efficiency, stability, safety and reliability, while the disadvantages may include higher maintenance costs and maintenance problems as reported by some users.