Power system control method, control system and vehicle for hybrid vehicle
By controlling the torque and voltage of the power system of hybrid vehicles, the safety issues caused by the power limitation fault of the power battery are resolved, ensuring that the vehicle can operate normally in low-temperature environments and improving the safety and reliability of the vehicle.
CN117360469BActive Publication Date: 2026-04-21NINGBO GEELY ROYAL ENGINE COMPONENTS CO LTD +1
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Patent Information
- Application Number
- CN202311580930.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-02-09
- Publication Date
- 2026-04-21
- Estimated Expiration
- 2042-02-09
AI Technical Summary
Technical Problem
When a power battery experiences a power limitation fault, existing technologies cannot effectively handle it, resulting in low vehicle safety and potential power battery failure.
Method used
By controlling the torque of the first and second motors and implementing closed-loop control of the voltage of the first motor, the current at the power battery bus terminal is kept at zero, the voltage is adjusted within a preset range, and the drive mode is switched to ensure normal vehicle operation.
Benefits of technology
When the power of the battery is limited, it ensures the normal operation of the vehicle, avoids safety hazards caused by battery failure, and improves the vehicle's safety and low-temperature driving performance.
✦ Generated by Eureka AI based on patent content.
Abstract
This invention provides a powertrain control method, control system, and vehicle for a hybrid vehicle, relating to the field of vehicle control technology. The powertrain control method of this embodiment includes: determining whether a power battery has experienced a power-limited fault; when a power-limited fault is determined, performing torque control on a first motor and a second motor, while simultaneously disabling the anti-shake function of the second motor, so that the power generation of the first motor and the load power consumption remain consistent, and maintaining the current at the power battery bus terminal at zero; and performing voltage control on the first motor so that the difference between the actual voltage of the first motor and the set voltage is within a preset difference range. This control method can ensure normal vehicle operation while avoiding the problem of the vehicle being unable to drive or even experiencing power battery failure due to power-limited power, thus improving vehicle driving safety under power-limited conditions.
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