Charging method for dynamically adjusting charging current of electric vehicle
A charging current and dynamic adjustment technology, which is applied in electric vehicle charging technology, electric vehicles, secondary battery charging/discharging, etc., can solve problems such as no real-time dynamic adjustment, and achieve dynamic performance, stability, and battery life. The effect of protection
Inactive Publication Date: 2020-11-10
HANTENG AUTOMOBILE CO LTD
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Problems solved by technology
The existing charging method only pre-adjusts the charging current without real-time dynamic adjustment of the process
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[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The specific embodiments described here are only used to explain the present invention, not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0025] see Figure 1-2 , the invention provides a charging method for dynamically adjusting the charging current of an electric vehicle, comprising the following steps:
[0026] S1: Through a large amount of experimental data, a two-dimensional charging current MAP is formed with the battery temperature and battery power as the coordinat...
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The invention discloses a charging method for dynamically adjusting a charging current of an electric vehicle, and the method comprises the following steps: S1, forming a two-dimensional charging current MAP taking the temperature and electric quantity of a battery as coordinates through a large amount of experimental data, collecting the current temperature and electric quantity of the battery inreal time in a charging process, and obtaining a corresponding allowable charging current through table look-up; S2, bringing power consumption, known in real time, of a high-voltage device of the whole vehicle into calculation, and performing mean value processing on the calculated power; S3, pre-adjusting the charging current; S4, performing filtering processing on the deviation value; S5, performing process adjustment on a charging current. According to the invention, through real-time calculation and real-time acquisition of the actual charging current, the dynamics of the adjustment process is ensured, so that the stability of the charging time is ensured. The charging current is calculated through a parallel strategy of three dimensions, two-stage adjustment and two processing, thestability of the charging current is ensured, and the service life of the battery is protected.
Description
technical field [0001] The invention belongs to the technical field of electric vehicle charging, and in particular relates to a charging method for dynamically adjusting the charging current of an electric vehicle. Background technique [0002] An electric vehicle (BEV) refers to a vehicle that is powered by a vehicle-mounted power supply, drives the wheels with a motor, and meets the requirements of road traffic and safety regulations. Due to its smaller impact on the environment than traditional cars, its prospects are widely optimistic. The types of electric vehicles: pure electric vehicles (BEV), hybrid electric vehicles (HEV), fuel cell vehicles (FCEV), and the research and development of electric vehicle batteries have experienced The development process from lead-acid battery, nickel metal hydride battery to lithium battery. [0003] Charging function is an important function of electric vehicles, accurate and stable charging current will play a good role in guarant...
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IPC IPC(8): B60L58/12B60L58/16B60L58/24B60L58/15B60L53/62H01M10/44
CPCB60L58/12B60L58/16B60L58/24B60L58/15B60L53/62H01M10/446Y02T10/70Y02T10/7072Y02T90/12Y02E60/10
Inventor 周伯寅潘世林梅周盛陈林周斌王海波
Owner HANTENG AUTOMOBILE CO LTD