A double row MOSFET electric bicycle controller

By using a snap ring to fix a double row of MOSFETs in the electric bicycle controller, and using the support bosses on the mounting wall and the inner wall of the housing to press them together, a higher power density and simplified installation are achieved, solving the problems of low power density and installation interference caused by fixing MOSFETs in the prior art.

CN224538547UActive Publication Date: 2026-07-21NANJING LISHUI ELECTRONICS RES INSITITUE CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANJING LISHUI ELECTRONICS RES INSITITUE CO LTD
Filing Date
2025-08-11
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

The current method of fixing MOSFETs in electric bicycle controllers results in low power density, and the spring clips can easily interfere with the internal structure during installation.

Method used

A single retaining spring is used to fix the dual-row MOSFETs. The retaining spring is pressed by the support bosses on the mounting wall and the inner wall of the housing. The retaining spring is installed from the outside to the inside. The U-shaped pressing part is used to achieve fixation and heat dissipation. The design of the sealing cap and potting hole ensures simple installation and good potting effect.

Benefits of technology

It achieves greater power density and simplifies the installation process within the same volume, avoids internal structural interference, and improves installation efficiency and heat dissipation.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224538547U_ABST
    Figure CN224538547U_ABST
Patent Text Reader

Abstract

The utility model discloses a kind of electric bicycle controllers of double-row MOS tube, including controller shell, PCB board is arranged in the controller shell, there is a section of mounting wall extending inside on the inner wall of the controller shell, installation space is formed between the mounting wall and the lateral wall of controller shell, two rows of MOS tubes are arranged in the installation space with interval, snap spring is arranged between the two rows of MOS tubes, and the snap spring is used to compress two rows of MOS tubes to the mounting wall and the inner wall direction of controller shell respectively. The structure of the application fixes double-row MOS tube by a snap spring, and greater power density is achieved in the same volume, and the snap spring is installed from outside to inside, without any interference, and the process is simple.
Need to check novelty before this filing date? Find Prior Art