A control method for power battery precharging process
A technology of power battery and control method, which is applied to battery circuit devices, current collectors, electric vehicles, etc., can solve the problem of pre-charging timeout errors and other considerations that are insufficient, do not consider load voltage, and do not consider the closing action of negative relay and pre-charge relay. Is it really completed, etc.
Active Publication Date: 2017-10-10
BEIJING BORGWARD AUTOMOBILE CO LTD
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
At the beginning of pre-charging, it did not consider whether the closing action of the negative relay and the pre-charging relay was actually completed, nor did it consider the load voltage, and the pre-charging timeout error was not fully considered.
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 make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below ...
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 power battery pre-charging process control method. The control method comprises steps: S1, whether load voltage is in a usable range is detected, if yes, a fourth step is carried out, and if not, a second step is carried out; S2, whether a negative electrode relay is disconnected is detected, if yes, a third step is carried out, and if not, the fourth step is carried out; S3, the negative electrode relay is closed, time is delayed, and the first step is carried out; S4, the negative electrode relay and a pre-charging relay are diagnosed, in case of fault, an error is reported, or otherwise, a fifth step is carried out; and S5, pre-charging is carried out, whether a pre-charging completion condition is completed is judged, if yes, pre-charging is completed, or otherwise, whether the pre-charging time exceeds is judged. The control method of the invention detects the negative electrode relay and the pre-charging relay at a pre-charging start stage, and thus, when pre-charging is started officially, the negative electrode relay and the pre-charging relay are ensured to be in the closed state; and in addition, detection of excessive pre-charging time is set, and thus, quick and accurate pre-charging process completion can be better ensured.
Description
technical field [0001] The invention relates to the technical field of automobiles, in particular to a method for controlling the precharging process of a power battery. Background technique [0002] Electric vehicles should be pre-charged first in the process of starting and powering on. The whole pre-charging process includes the closing and opening actions of the negative relay and the pre-charging relay, as well as the judgment method of pre-charging completion and pre-charging timeout. The control of the pre-charging process has an important impact on the life of the relay, the safety and reliability of the battery pack and the vehicle. [0003] Current patents and published literature related to power battery control methods mainly focus on thermal management, balance control, and state-of-charge calculation. The pre-charging control method in the prior art only sends the closing action command of the negative relay and the pre-charging relay, that is, starts pre-cha...
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 Patents(China)
IPC IPC(8): H02J7/00
CPCY02E60/10
Inventor 杨伟斌
Owner BEIJING BORGWARD AUTOMOBILE CO LTD