Vehicle, charging system thereof and charging system control method
A charging system and charging circuit technology, which is applied in the field of charging system control and vehicle charging system, can solve problems such as fast charging contactor adhesion, failure to obtain 100% guarantee, user troubles, etc., and achieve the effect of improving user experience
Inactive Publication Date: 2020-04-03
宝能(广州)汽车研究院有限公司
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- Application Information
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Problems solved by technology
[0003] In practical applications, since the current during fast charging is usually as high as tens of amperes, or even hundreds of amperes, and the quality of the fast charging contactor cannot be guaranteed 100% due to product consistency and other reasons, so when fast charging the contactor There is a problem of sticking
When the fast charging contactor is stuck, for the sake of the user's personal safety, it usually restricts the driving of the vehicle or other normal functions, causing great trouble to the user
Method used
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[0030] 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 and are intended to explain the present invention and should not be construed as limiting the present invention.
[0031] This application is based on the inventor's understanding and research on the following issues:
[0032] Such as figure 1 As shown, in the process of DC charging (fast charging), the vehicle controller VCU and the battery controller BMS control it. When it is determined that various conditions are met, the fast charging contactor is controlled to pull in, thereby turning on the secondary battery. From the DC charging port to the internal circuit of the power battery, the power can be charged into the battery. At this time...
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The invention provides a vehicle, a charging system of the vehicle and a control method of the charging system, the vehicle comprises a power battery, the charging system comprises a charging circuit,wherein the charging circuit comprises a quick charging interface and a quick charging contactor arranged between the quick charging interface and the power battery; a cut-off circuit used for cutting off the charging circuit; and a controller used for controlling the cut-off circuit to cut off the charging circuit when the quick charging contactor is adhered. According to the charging system, the quick charging loop of the vehicle can be cut off when the quick charging contactor has an adhesion fault, the use of the vehicle by a user is not influenced under the condition of ensuring the personal safety of the user, and the user experience is improved.
Description
technical field [0001] The invention relates to the technical field of vehicle control, in particular to a vehicle charging system, a vehicle and a control method of the vehicle charging system. Background technique [0002] Current electric vehicles usually have two charging methods, namely fast charging and slow charging. Among them, fast charging refers to DC charging, that is, direct output of DC power from the charging pile end, via charging connection lines / related high-voltage contactors / high-voltage cables, etc. , directly input power into the power battery; slow charging refers to AC charging, the AC output from the AC charging pile is passed through the on-board AC-to-DC charger, and then the converted DC power is input into the power battery. During fast charging, the control of the high-voltage contactor on the fast charging line is the most important thing in this DC charging function, and its on-off directly determines whether the circuit can be connected. [...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B60L53/00
CPCB60L53/00Y02T10/70Y02T10/7072Y02T90/14
Inventor 刘隆杨春雷
Owner 宝能(广州)汽车研究院有限公司