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Battery system current output control method, device and computer equipment

A technology for battery system and output control, applied in battery system current output control methods, computer equipment and storage media, and device fields, capable of solving the problems of easily changing motor system operating efficiency points, battery system overcurrent faults, and reducing battery system service life, etc. question

Active Publication Date: 2021-11-30
CHANGSHA INTELLIGENT DRIVING INST CORP LTD
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Problems solved by technology

[0003] However, in the current output control process of the battery system of the electric vehicle motor system, it is easy to change the operating efficiency point of the motor system, resulting in over-discharge or over-charge over-current faults in the battery system, reducing the service life of the battery system

Method used

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  • Battery system current output control method, device and computer equipment
  • Battery system current output control method, device and computer equipment
  • Battery system current output control method, device and computer equipment

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Embodiment Construction

[0056] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.

[0057] The battery system current output control method provided by this application can be applied to such as figure 1shown in the application environment. Among them, the vehicle controller (Vehicle Control Unit, VCU) determines the current limit ratio according to the battery characteristic limit determined by the current output characteristics of the battery system and the current operating current, and determines the current limit coefficient in combination with the preset current limit coefficient determination conditions , according to the current limit coefficient and the battery ...

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Abstract

The present application relates to a battery system current output control method, device, computer equipment and storage medium. The method includes: obtaining the current working current of the battery system and the battery characteristic limit current determined according to the current output characteristics, and determining the current over-limit ratio according to the battery characteristic limit current and the current work current; according to the current over-limit ratio and the preset limit current Determine the condition of the current coefficient to determine the current limit coefficient; limit the current according to the current limit coefficient and battery characteristics, determine the limit current; when the current working current exceeds the limit current, determine the current request torque of the motor system, and control according to the current request torque The motor system outputs the corresponding limit torque, and the limit torque determines the corresponding working current output by the battery system; return to the step of obtaining the current working current of the battery system and the battery characteristic limit current determined according to the current output characteristics. By adopting the method, the overcurrent fault of the battery system can be avoided, and the service life of the battery system can be improved.

Description

technical field [0001] The present application relates to the technical field of electric vehicles, in particular to a battery system current output control method, device, computer equipment and storage medium. Background technique [0002] At present, climate change, energy and environmental issues are long-term issues faced by human society. With the widespread application of fuel vehicles, the problems of energy consumption and vehicle exhaust emissions are becoming more and more serious, and the upgrading of the industrial structure of the automotive industry and the strategic transformation of the power system's electrification have received more and more attention. Among them, the technology of electric vehicles powered by vehicle-mounted power supplies and motor-driven wheels has been developed rapidly, and its impact on the environment is much smaller than that of traditional fuel vehicles, so it has broad application prospects. [0003] However, in the current out...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L58/10B60L15/20
CPCB60L15/20B60L2240/423B60L2240/549Y02T10/70Y02T10/72
Inventor 龙成冰王坤陶晓
Owner CHANGSHA INTELLIGENT DRIVING INST CORP LTD
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