BMSCAN and RS485 all-in-one communication interface circuit
By designing the BMSCAN and RS485 all-in-one communication interface circuit in the battery management system, the problems of complex system structure, high failure rate and low scalability are solved, and the system structure is simplified and the failure rate is reduced, while improving the flexibility and scalability of the system.
CN119690899AInactive Publication Date: 2025-03-25深圳市华芯控股有限公司
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Patent Information
- Application Number
- CN202510222227.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2025-03-25
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Technical Problem
The existing battery management system has problems such as complex system structure, high failure rate, high cost, and low system scalability and flexibility.
Method used
A BMSCAN and RS485 all-in-one communication interface circuit is provided. By setting up an all-in-one interface between RS485 and CAN, a differential processing circuit, a common mode suppression circuit and a signal recognition control circuit, the identification and switching of RS485 and CAN signals is realized, and the system structure is simplified.
Benefits of technology
Through the all-in-one communication interface circuit, the structure of the battery management system is simplified, the system failure rate and cost are reduced, and the system is enhanced.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to the technical field of battery management system communication interfaces and the like, and provides a BMSCAN and RS485 all-in-one communication interface circuit which is provided with an RS485 and CAN all-in-one interface, a differential processing circuit and a common-mode rejection circuit, the RS485 and CAN all-in-one interface is connected to an RS485 bus or a CAN bus to obtain bus communication signals, and the RS485 and CAN all-in-one interface is connected to the differential processing circuit and the common-mode rejection circuit. The differential processing circuit carries out differential processing on the bus communication signal to obtain a differential signal of the bus communication signal, the common-mode suppression circuit carries out common-mode suppression on the differential signal to obtain a bus communication signal after common-mode suppression, and the RS485 and CAN signal identification control circuit receives the bus communication signal after common-mode suppression and then carries out identification. And after identifying that the specific signal type of the bus communication signal is the RS485 signal or the CAN signal, controlling the all-in-one interface of the RS485 and the CAN to output the identified RS485 signal or the CAN signal, so that the structure of the battery management system is simplified, the failure rate and the cost of the system are reduced, and the expandability and the flexibility of the system are improved.
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