Thermal management method and device of power battery, electronic equipment and storage medium
A power battery and thermal management technology, applied in the automotive field, can solve problems such as a single thermal management strategy and ignore the actual temperature of the battery, and achieve the effect of accurate thermal management
Pending Publication Date: 2022-07-26
HOZON NEW ENERGY AUTOMOBILE CO LTD
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] At present, the thermal management strategies adopted by most electric vehicles are relatively simple, and only use the temperature threshold based on experience to control the heating and cooling of the power battery. / Below a certain temperature value, cooling / heating is turned on. This thermal management strategy based on the temperature sensor collecting the battery temperature as the main parameter is highly dependent on the analog signal digital signal acquisition chip, sensor accuracy and layout form.
The temperature measured by the sensor is the surface temperature of the battery, ignoring the actual temperature inside the battery, and it is impossible to accurately manage the heat of the power battery
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
[0026] In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.
[0027] refer to figure 1 , showing a flow chart of steps of a thermal management method for a power battery according to an embodiment of the present invention. The thermal management method of the power battery can be applied to a new energy vehicle equipped with a power battery. The thermal management method of the power battery may specifically include the following steps:
[0028] Step 101: Obtain the terminal voltage value, current value and external temperature value of the power battery in the preset state of charge change interval.
[0029] In the embodiment of the present invention, according to the actual driving conditions of the vehicle, the relevant data combining the characteristics of the operating conditions an...
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 embodiment of the invention provides a thermal management method and device for a power battery, and the method comprises the steps: obtaining a terminal voltage value, a current value and an external temperature value of the power battery in a preset charge state change interval; obtaining an internal temperature value of the power battery in the charge state change interval according to the terminal voltage value, the current value, the external temperature value and the battery parameters of the power battery; generating an external temperature rise rate and an internal temperature rise rate of the power battery according to the external temperature value, the internal temperature value and a time period of the charge state change interval; and comparing the external temperature rise rate with the internal temperature rise rate, and selecting an external temperature value or an internal temperature value according to a comparison result to perform thermal management on the power battery. According to the embodiment of the invention, a temperature threshold is prevented from being set according to experience, and thermal management can be accurately carried out on the power battery.
Description
technical field [0001] The present invention relates to the technical field of automobiles, and in particular, to a thermal management method, device, electronic device and computer-readable storage medium of a power battery. Background technique [0002] With the popularization and application of new energy vehicles, electric vehicles, while becoming an important means of transportation, also face technical challenges such as charging speed, cycle life and battery thermal management. In order to achieve the best performance and life of the power battery, it is necessary to control the temperature rise rate and temperature difference of the power battery through measures such as low temperature heating, high temperature cooling, and temperature management, so as to keep it running within a suitable temperature range. The temperature control methods mentioned above are all integrated into the thermal management strategy. [0003] At present, the thermal management strategy a...
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 IPC IPC(8): H01M10/633H01M10/635H01M10/63H01M10/625
CPCH01M10/633H01M10/635H01M10/63H01M10/625
Inventor 王欣欣王明强马建生张虎张洪雷张旭
Owner HOZON NEW ENERGY AUTOMOBILE CO LTD