Controller temperature estimation method and system for vehicle motor and automobile
A controller and vehicle technology, applied in the automotive field, can solve the problems of low measurement accuracy of the junction temperature of the switch chip, and achieve the effect of improving the junction temperature and water inlet temperature estimation accuracy and saving costs
Pending Publication Date: 2021-12-10
ZHEJIANG GEELY HLDG GRP CO LTD +1
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Problems solved by technology
[0003] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a method for estimating the temperature of the controller of the vehicle motor, a system and a car, which are used to solve the problem of the temperature of the water inlet of the controller of the existing vehicle motor and the problem of the switch chip. The problem of low junction temperature measurement accuracy
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[0031] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.
[0032] It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the compo...
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The invention provides a controller temperature estimation method for a vehicle motor. The method comprises the steps that working condition information of the vehicle motor is obtained; according to the working condition information of the vehicle motor, whether the vehicle motor is in a locked-rotor state or not is judged; if the vehicle motor is in the locked-rotor state, the controller executes a locked-rotor state temperature estimation method instruction and obtains the water inlet temperature of the controller in the locked-rotor state and the junction temperature of an insulated gate bipolar transistor chip of the controller; and if the vehicle motor is not in the locked-rotor state, the controller executes a normal state temperature estimation method instruction, and obtains the water inlet temperature of the controller in a normal state and the junction temperature of an insulated gate bipolar transistor chip of the controller. The problem that the estimation precision of the water inlet temperature of a controller of an existing vehicle motor and the estimation precision of the insulated gate bipolar transistor chip thermostat are low can be solved.
Description
technical field [0001] The invention relates to the technical field of automobiles, in particular to a method and system for estimating the temperature of a controller of a vehicle motor and an automobile. Background technique [0002] In the new energy electric drive system, the controller of the vehicle motor is its core component. In order to ensure that the vehicle can run stably under various working conditions, it is necessary to avoid the derating failure of the system caused by the overheating of the controller. Contents of the invention [0003] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a method for estimating the temperature of the controller of the vehicle motor, a system and a car, which are used to solve the problem of the temperature of the water inlet of the controller of the existing vehicle motor and the problem of the switch chip. The problem of low accuracy of junction temperature mea...
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IPC IPC(8): G01K13/00B60L15/20B60R16/02
CPCG01K13/00B60L15/20B60R16/02Y02T10/72
Inventor 陈启苗
Owner ZHEJIANG GEELY HLDG GRP CO LTD