Abstract: An engine includes a cylinder head and a cylinder block. The cylinder head has a first water jacket passage, an exhaust passage and a second water jacket passage. The exhaust passage is located between the first water jacket passage and the second water jacket passage. The first water jacket passage and the second water jacket passage are disposed close to the exhaust passage. The first water jacket passage is in communication with the second water jacket passage. The second water jacket passage is in communication with the cylinder block. The second water jacket passage has a water inlet passage.

Abstract: The present disclosure discloses a color matching evaluation method combining similarity measure and visual perception. The method includes: firstly, constructing an image database with rich color information; extracting main colors from an acquired image using an improved clustering method for color matching; generating a corresponding palette using an intelligent color matching recommendation system, and evaluating a palette similarity using a minimum color difference model; then, recoloring the corresponding image using the generated palette through an image recoloring technology to obtain a recolored image, and calculating a structural similarity between the source image and the recolored image; performing feature level adaptive weighted fusion on the palette similarity and the structural similarity, and performing an eye movement tracking experiment on the source image and the recolored image to obtain visual perception data of the images.

Abstract: The present application relates to an online detection method for internal short-circuit of power battery, which comprises the following steps: in the process of charging and discharging, when the state of charge of a power battery is greater than a preset first threshold, monitoring and recording the voltage for each cell in the power battery; in accordance with the recorded historical voltages of each cell, determining whether there is a cell with voltage less than a second threshold in the process of charging, and less than a third threshold in the process of discharging, if so, then marking the corresponding cell as an internal short-circuited cell. The present application could accurately determine whether a malfunction of internal circuit of power battery occurs during the operation of a vehicle, so as to guarantee the safety of the vehicle and the people on-board.

Abstract: The present application relates to a battery charging method. The method comprises the steps of: in accordance to the current's adverse effect on battery lifespan, classifying the charging current of a battery into a first type of charging current and a second type of charging current; setting a proportion limit on the first type of charging current and a proportion limit on the second type of charging current; obtaining the historical charging current information of the battery; determining the historical accumulative proportion of the second type of charging current in accordance to the historical charging current information; in accordance to the proportion limits and the historical accumulative proportion, determining the type of battery charging current which is present available. By taking into account different charging currents' adverse effect on battery lifespan, the charging method solves the problem of excessive charging current's adverse effect on battery lifespan.

Abstract: The present application relates to a battery charging method. The method comprises the steps of: in accordance to the current's adverse effect on battery lifespan, classifying the charging current of a battery into a first type of charging current and a second type of charging current; setting a proportion limit on the first type of charging current and a proportion limit on the second type of charging current; obtaining the historical charging current information of the battery; determining the historical accumulative proportion of the second type of charging current in accordance to the historical charging current information; in accordance to the proportion limits and the historical accumulative proportion, determining the type of battery charging current which is present available. By taking into account different charging currents' adverse effect on battery lifespan, the charging method solves the problem of excessive charging current's adverse effect on battery lifespan.

Abstract: The invention relates to automotive electronic and electrical technology, and in particular, to a multi-functional on-vehicle power converter for electric vehicle as well as an electric vehicle comprising the multi-functional on-vehicle power converter. In the invention, by introducing two independent switches, a rectifying circuit, a filtering circuit, an output EMC circuit and a corresponding control unit (e.g., a CAN communication circuit and a signal collecting circuit, etc.) can be shared among a conductive charging converter, an on-vehicle part of a wireless charging converter and a DC-DC converter, and a convenient and swift switch can be realized among the three operational modes. In addition, since the circuit units are shared, the number of cooling circuits is also reduced, and the occupied space and weight of the on-vehicle power converter are decreased.

Abstract: The present application relates to an online detection method for internal short-circuit of power battery, which comprises the following steps: in the process of charging and discharging, when the state of charge of a power battery is greater than a preset first threshold, monitoring and recording the voltage for each cell in the power battery; in accordance with the recorded historical voltages of each cell, determining whether there is a cell with voltage less than a second threshold in the process of charging, and less than a third threshold in the process of discharging, if so, then marking the corresponding cell as an internal short-circuited cell. The present application could accurately determine whether a malfunction of internal circuit of power battery occurs during the operation of a vehicle, so as to guarantee the safety of the vehicle and the people on-board.

Abstract: A method for testing battery cycle life based on environmental temperature is provided. The method comprises recording the daily average temperatures of a certain region in a year, categorizing the recorded daily average temperatures in the year, determining the proportion of the number of days of each temperature range to the total number of days in that year, determining the temperature conditions for the battery cycle life test according to the temperature ranges and thus determining the respective charge rates and discharge rates of the battery cycle life test according to the temperature conditions, and testing the battery according to the proportions, the temperature conditions and the charge and discharge rates under the temperature conditions to obtain the battery life cycle. With the above steps, the actual environmental temperatures of a battery can be accurately determined, and thereby precisely estimating the battery's lifespan.