Unlock instant, AI-driven research and patent intelligence for your innovation.

Diagnostic control method for pulse heating of power battery

A technology of pulse heating and diagnostic control, which is applied in battery/fuel cell control devices, electric vehicles, electrical devices, etc., can solve problems such as temperature overrun and damage to power batteries, reduce losses, prevent current from rising too fast, The effect of improving safety and reliability

Pending Publication Date: 2022-04-15
重庆长安新能源汽车科技有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the pulse heating diagnosis strategy is unreasonable, it may cause the temperature to exceed the limit and damage the power battery. Therefore, it is necessary to design a reasonable diagnosis control strategy for pulse heating

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Diagnostic control method for pulse heating of power battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] Such as figure 1 As shown, the diagnostic control method for power battery pulse heating in this embodiment includes:

[0026] In the first step, in the pulse heating mode, the control module determines the initial value Ud' of the direct-axis voltage according to the pulse heating gear request, and the diagnosis module monitors the IGBT junction temperature, motor temperature and bus voltage in real time, and then executes the second step.

[0027] Step 2: The diagnostic module judges whether the IGBT junction temperature is lower than the preset first temperature threshold T 1 , if yes, go to the third step, otherwise go to the fourth step.

[0028] The third step, the diagnosis module makes the first limit power coefficient K 1 equal to 1, and the first limiting power coefficient K 1 =1 to send to the control module, and then execute the seventh step.

[0029] Step 4: The diagnostic module judges whether the IGBT junction temperature is greater than or equal to t...

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

No PUM Login to View More

Abstract

The invention discloses a diagnosis control method for pulse heating of a power battery, which is characterized in that IGBT junction temperature, motor temperature and bus voltage are monitored in real time through a diagnosis module, and when an abnormal condition occurs, a control module performs power limiting processing on pulse heating, so that the loss of electric quantity on a switch can be reduced, the current can be prevented from rising too fast, and the service life of the switch is prolonged. Therefore, the safety and the reliability of pulse heating are improved.

Description

technical field [0001] The invention belongs to the field of new energy power battery heating, and in particular relates to a diagnostic control method for power battery pulse heating. Background technique [0002] The power battery is the core component of the electric vehicle, and the temperature has an important impact on the power battery. If the temperature is too low, the performance of the power battery will decrease and it will not work properly. In order to discharge the power battery better and prolong the service life of the power battery, pulse heating is required for the power battery under low temperature conditions. If the pulse heating diagnosis strategy is unreasonable, it may cause the temperature to exceed the limit and damage the power battery. Therefore, it is necessary to design a reasonable diagnosis control strategy for pulse heating. Contents of the invention [0003] The purpose of the present invention is to provide a diagnostic control method f...

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
no application Login to View More
IPC IPC(8): B60L58/27B60L3/12
CPCY02T10/70
Inventor 杨娜林雨婷陈扬陈健苏琳珂
Owner 重庆长安新能源汽车科技有限公司