Heat management loop state monitoring method and device for pure-electric vehicle
A thermal management, pure electric technology, applied in the direction of electric power devices, power devices, vehicle components, etc., can solve the problems of unable to monitor the working status of water pumps and water valves and pipeline leakage
Active Publication Date: 2018-11-20
CH AUTO TECH CORP CO LTD
View PDF3 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] Since not all water pumps or water valves on the thermal management circuit can feed back the real working status, it is impossible to monitor the working status of each water pump and water valve and the leakage of the pipeline
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0038] In order to have a clearer understanding of the technical features, purposes and effects of the invention, the specific implementation of the invention will now be described with reference to the accompanying drawings.
[0039] figure 1 It is a flow chart of a method for monitoring the state of a thermal management circuit of a pure electric vehicle provided by an embodiment of the present invention, and its specific steps are as follows:
[0040] Step 101: If it is found that the working state of the thermal management circuit has changed, then according to the changed working state, obtain the target rotational speed on the corresponding thermal management circuit, send the obtained target rotational speed to each water pump on the thermal management circuit, and notify each water pump on the thermal management circuit A water pump adjusts the current speed to the target speed.
[0041] In practical applications, it is found that the working state of the thermal mana...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a heat management loop state monitoring method and a heat management loop state monitoring device for a pure-electric vehicle. The method comprises the following steps of: after finding working state changes of a heat management loop, acquiring a target rotating speed in the corresponding heat management loop according to the changed working state; sending the acquired target rotating speed to each water pump in the heat management loop; informing each water pump to regulate the current rotating speed to be equal to the target rotating speed; receiving the flow sent periodically by a flow detecting module of each water pump; finding out normal flow corresponding to the target rotating speed of the water pump and a corresponding flow error threshold value according to the current target rotating speed; calculating the difference value of the flow sent by the flow detecting module and the normal flow; judging whether the absolute value of the difference value is larger than the flow error threshold value or not; if yes, determining that the state of the heat management loop is abnormal; and otherwise, determining that the state of the heat management loop is normal. The method disclosed by the invention realizes monitoring on the state of the heat management loop of the pure-electric vehicle.
Description
technical field [0001] The invention relates to the technical field of pure electric vehicles, in particular to a method and device for monitoring the state of a thermal management circuit of a pure electric vehicle. Background technique [0002] In pure electric vehicles, power batteries, motors and their controllers have high temperature requirements. Appropriate operating temperature can increase driving range and delay power battery life. The current thermal management control usually adopts: the controller sends control commands to the water pump and water valve according to the established strategy, and the water pump and water valve work according to the command to ensure an appropriate temperature range. [0003] Since not all water pumps or water valves on the thermal management circuit can feed back the real working status, it is impossible to monitor the working status of each water pump and water valve and the leakage of the pipeline. Contents of the invention ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): F04B49/06F04B49/20F04B51/00B60K1/00
CPCB60K1/00B60K2001/005B60K2001/006F04B49/065F04B49/20F04B51/00
Inventor 陆群郭建磊
Owner CH AUTO TECH CORP CO LTD