High-power high-reliability voltage retainer used for automobile starting and stopping system

By designing a multi-channel interleaved boost structure and a high-power voltage keeper in dual-loop control mode in the car start-stop system, the problem of voltage drop when starting a hybrid electric vehicle is solved, and an output voltage with high reliability and small ripple is achieved. Ensure the normal operation of the automobile electronic control unit.

CN105388955AActive Publication Date: 2016-03-09SHANGHAI FENGTIAN ELECTRONICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI FENGTIAN ELECTRONICS
Filing Date
2015-12-24
Publication Date
2016-03-09

AI Technical Summary

Technical Problem

Existing voltage maintainers cannot meet the high current and voltage drop requirements of hybrid vehicles with start-stop control when starting, resulting in impact interference on the vehicle's electrical system and disordered electrical operation.

Method used

A high-power and high-reliability voltage keeper including a pass-through circuit module, a boost circuit module, a reverse polarity circuit module, a CAN transceiver, a CPU processor and a DSP digital signal processor is designed, using a multi-channel interleaved boost structure and Dual-loop control mode combines voltage feedback loop and current feedback loop, supports CAN2.0 communication protocol and UDS diagnosis, and adds UART serial peripheral interface to improve system stability and reliability.

Benefits of technology

It provides 1500W short-term boost output power and 1000W straight-through long-term output power to ensure the normal operation of the automotive electronic control unit, reduce voltage ripple, improve the reliability level of the system, and solve the problem of electrical appliances not working properly during startup.

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Abstract

The invention provides a high-power high-reliability voltage retainer used for an automobile starting and stopping system. The high-power high-reliability voltage retainer is higher in power and reliability and smaller in size and ripple. The high-power high-reliability voltage retainer comprises a through circuit module (1), a booster circuit module (2), a reversed polarity circuit module (3), a CAN transceiver (4), a CPU (5), a DSP (digital signal processor) (6) and a battery. A battery input port and a battery output port are formed in the through circuit module (1), a battery input port and a battery output port are formed in the booster circuit module (2), and the reversed polarity circuit module (3) is electrically connected with the booster circuit module (2); the CAN transceiver (4), the CPU (5) and the DSP (6) are sequentially and electrically connected; the CPU (5) is electrically connected with the through circuit module (1), and the DSP (6) is electrically connected with the through circuit module (1); the DSP (6) is electrically connected with the booster circuit module (2).
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