Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A heating device, lithium battery technology, applied in the direction of secondary batteries, circuits, electrical components, etc., can solve the problems of poor heating effect, large heat transfer process loss, low heat transfer efficiency of lithium batteries, etc.
Inactive Publication Date: 2021-01-05
CRRC QINGDAO SIFANG CO LTD
View PDF2 Cites 2 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
However, the heat transfer efficiency from the heating resistor to the lithium batter
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
no. 1 example
[0048] see figure 1 , which is a schematic structural diagram of a lithium battery heating device provided in an embodiment of the present application.
[0049] Such as figure 1 As shown, the lithium battery heating device provided in the embodiment of the present application includes:
[0050] A battery management system 300 , a self-heating power converter 200 and a lithium battery 100 .
[0051] In the embodiment of the present application, the lithium battery 100 may refer to one lithium battery 100 , or may refer to a battery module including a plurality of lithium batteries 100 connected in series. As an example, the lithium battery 100 may include a lithium titanate battery 100 whose power is greatly affected by temperature, or other lithium batteries 100 whose power is greatly affected by temperature.
[0052] Both the lithium battery 100 and the self-heating power converter 200 are connected to the battery management system 300 , and the self-heating power converte...
no. 2 example
[0079] According to the device provided above, the embodiment of the present application also provides a lithium battery heating method.
[0080] see Figure 4 , which is a schematic flowchart of a method for heating a lithium battery provided in an embodiment of the present application.
[0081] Such as Figure 4 As shown, the lithium battery heating method provided by the embodiment of the present application includes: receiving the first signal sent by the battery management system 300, the first signal is a signal generated according to the temperature of the lithium battery; according to the first signal, forming an AC on the lithium battery Charge and discharge current to heat the lithium battery.
[0082] As a possible implementation manner, according to the first signal, an AC charging and discharging current is formed on the lithium battery to heat the lithium battery, including:
[0083] According to the first signal, an AC charging and discharging current is form...
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 lithium battery heating device and a heating method. The device comprises a battery management system, a self-heating power converter and a lithium battery, wherein the lithium battery and the self-heating power converter are connected with the battery management system, and the self-heating power converter is in closed-loop connection with the lithium battery; the battery management system is used for detecting the temperature of the lithium battery, generating a first signal according to the detected temperature and sending the first signal to the self-heating powerconverter; and the self-heating power converter is used for forming alternating current charging and discharging current on the lithium battery according to the first signal so as to heat the lithiumbattery. Therefore, according to the method provided by the invention, the lithium battery is directly heated by using the heat effect when the alternating current charging and discharging current passes through the internal resistor of the lithium battery, and the problem of overlarge energy loss in the heat transfer process is solved, so that the heating efficiency of the lithium battery is improved.
Description
technical field [0001] The present application relates to the field of batteries, in particular to a lithium battery heating device and a heating method. Background technique [0002] With the gradual development of lithium battery application technology, because its energy density is higher than some other energy storage methods, lithium batteries have been widely used in electric rail transit, electric vehicles and aerospace fields. Lithium batteries have the advantages of high power density, good safety, and long life, but the output power of lithium batteries is easily limited by temperature. For example, the peak power of a lithium battery at -10 degrees Celsius attenuates to 60% of the peak power at room temperature, which makes it impossible for a lithium battery to start normally in a low temperature environment, and the battery needs to be heated to a certain temperature first. [0003] At present, the method for heating the battery is mainly to set a heating resis...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more