Power battery charge heating control method and power battery charge heating control system of electric vehicle

A power battery and heating control technology, which is applied to battery circuit devices, secondary batteries, circuits, etc., can solve the problems of affecting battery charging capacity and large temperature difference of batteries, and achieve the effect of avoiding frequent jumps and fast charging

Active Publication Date: 2015-08-12
BEIJING BORGWARD AUTOMOBILE CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

When the two-box layout scheme is adopted, if the threshold segmentation control method is still adopted, the temperature difference between the two or more boxes may be too large, which may affect the charging capacity of the battery

Method used

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  • Power battery charge heating control method and power battery charge heating control system of electric vehicle
  • Power battery charge heating control method and power battery charge heating control system of electric vehicle
  • Power battery charge heating control method and power battery charge heating control system of electric vehicle

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Embodiment Construction

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0029] A method and system for controlling charging and heating of a power battery of an electric vehicle according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0030] figure 1 It is a flowchart of a charging and heating control method for a power battery of an electric vehicle according to an embodiment of the present invention. As shown in Figure 1, according to an embodiment of the present invention, a power battery charging and heating control method for an electric...

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Abstract

The invention discloses a power battery charge heating control method and a power battery charge heating control system of electric vehicles, wherein the method comprises following steps: (1) when the power battery needs to heat, determining whether the lowest temperature of a front battery box and/or the lowest temperature of a back battery box is lower than a first preset temperature; (2) if the lowest temperature of the front battery box and/or the back battery box is lower than the first preset temperature, heating the front battery box and/or the back battery box, or otherwise, comparing a difference between the lowest temperatures of the front battery box and the back battery box with a second preset temperature; (3) if the temperature difference is higher than the second preset temperature and the lowest temperature of the front battery box is higher than that of the back battery box, heating the back battery box for reducing the temperature difference, or otherwise, if the temperature difference is higher than the second preset temperature and the lowest temperature of the back battery box is higher than that of the front battery box, heating the front battery box. In the invention, according to the temperature change of the front and back battery boxes, a waiting-and-running-after control method is employed so that the temperature difference of the two battery boxes is in a reasonable range, thereby ensuring high-effective and quick charging.

Description

technical field [0001] The invention relates to the technical field of automobile manufacturing, in particular to a charging and heating control method and system for a power battery of an electric automobile. Background technique [0002] At present, there are two main charging schemes for the power battery at low temperature, namely, the power battery charging heating system and heating method of pure electric vehicles and the low-temperature charging heating system and heating method of pure electric vehicle power batteries. However, these two schemes are mainly aimed at the heating and charging method of electric vehicles equipped with only one box of power batteries. The control method adopts the threshold segmented control method, which is relatively simple, that is, heating does not charge when it is less than 0 ° C, and does not charge when it is greater than 5 ° C. Heating, the state between the two is maintained. However, electric vehicles are limited by chassis s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/615H01M10/625H01M10/6572
CPCH01M10/0525H01M10/443H02J7/00Y02E60/10
Inventor 杨伟斌
Owner BEIJING BORGWARD AUTOMOBILE CO LTD
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