A charging and discharging control method and system for an on-board charger, and a hybrid electric vehicle
A technology for hybrid electric vehicles and on-board chargers, which is applied in hybrid electric vehicles, battery/fuel cell control devices, vehicle components, etc., can solve the problem of not really improving the charging efficiency of power batteries, and achieve the effect of increasing current.
Active Publication Date: 2020-03-31
GEELY AUTOMOBILE INST NINGBO CO LTD +1
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] An object of the present invention is to solve the problem that the OBC charging control method in the prior art cannot realize the gradual increase of power battery power when the power battery power is low, so that the charging efficiency of the power battery cannot be really improved.
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
[0035] figure 1 A schematic flow chart showing a charging and discharging control method for an on-board charger according to an embodiment of the present invention is used to control charging and discharging a power battery of a hybrid vehicle under an OBC charging condition. Such as figure 1 As shown, the OBC charge and discharge control method includes:
[0036] Step S100, obtaining the SOC value of the power battery under the OBC charging condition;
[0037] Step S200, when the SOC value is less than or equal to the first preset power value, perform power limitation on each high-voltage accessory of the hybrid vehicle;
[0038] Step S300, when the SOC value of the power battery is greater than or equal to the second preset power value, and under the condition that the power battery is in the charging state, the power limit of each high-voltage accessory is gradually released according to the charging current of the power battery when charging, wherein, The second preset...
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 provides a vehicle-mounted charger charging and discharging control method. The vehicle-mounted charger charging and discharging control method comprises the following steps of obtainingthe remaining capacity value of a power battery under a vehicle-mounted charger charging condition; when the remaining capacity value is less than or equal to a first preset capacity value, limitingthe power of a high voltage accessory of a hybrid vehicle; and when the remaining capacity value of the power battery is larger than or equal to a second preset capacity value, gradually releasing thelimitation on the power of the high voltage accessory according to charging current of the power battery during charging under a situation of guaranteeing that the power battery is in a charging state, wherein the second preset capacity value is larger than the first preset capacity value. By limiting the power of the high voltage accessory in the charging process, situations that the lower the capacity of the power battery is the more the power battery is charged in the OBC charging process and the power battery is over-discharged are prevented; and therefore, the current entering the powerbattery is increased so that the charging efficiency of the power battery is enhanced and the power battery is protected.
Description
technical field [0001] The invention relates to the technical field of charging and discharging control of vehicle hybrid electric vehicles, in particular to a charging and discharging control method and system of an on-board charger and a hybrid electric vehicle. Background technique [0002] With the development of the automobile industry and the deepening of people's awareness of environmental protection, new energy vehicles will surely become the mainstream of the market. In the development process of new energy vehicles, as a transitional product from traditional fuel vehicles to pure electric vehicles, the development of hybrid vehicles has decisive strategic significance. [0003] On board charger (OBC) AC charging is an important source of power battery charging in plug-in hybrid electric vehicles. In the prior art, the charging time of the power battery is shortened by controlling the input current of the OBC charging gun. When the power battery is sufficient duri...
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): B60W20/00B60L58/10
CPCB60W20/00B60W2710/244Y02T10/70
Inventor 文增友陈帅万泽玲张剑锋刘策牛珍吉尹兴起白小劲姜博杨超群
Owner GEELY AUTOMOBILE INST NINGBO CO LTD