Abstract: An over-current protection device includes first and second electrode layers and a PTC material layer laminated therebetween. The PTC material layer includes a polymer matrix, and a conductive filler. The polymer matrix has a fluoropolymer. The total volume of the PTC material layer is calculated as 100%, and the fluoropolymer accounts for 47-62% by volume of the PTC material layer. The fluoropolymer has a melt viscosity higher than 3000 Pa·s.

Abstract: An over-current protection device includes a first metal layer, a second metal layer and a heat-sensitive layer laminated therebetween. The heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic and includes a polymer matrix and a first conductive filler. The polymer matrix includes a polyolefin-based polymer and a fluoropolymer. The fluoropolymer has a melt flow index higher than 1.9 g/10 min, and the polyolefin-based polymer and the fluoropolymer together form an interpenetrating polymer network (IPN). The first conductive filler has a metal-ceramic compound dispersed in the polymer matrix.

Abstract: An over-current protection device includes a first metal layer, a second metal layer and a heat-sensitive layer laminated therebetween. The heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic and includes a first polymer and a conductive filler. The first polymer consists of polyvinylidene difluoride (PVDF), and PVDF exists in different phases such as ?-PVDF, ?-PVDF and ?-PVDF. The total amount of ?-PVDF, ?-PVDF and ?-PVDF is calculated as 100%, and the amount of ?-PVDF accounts for 48% to 55%. The conductive filler has a metal-ceramic compound.

Abstract: An over-current protection device includes a first metal layer, a second metal layer and a heat-sensitive layer laminated therebetween. The heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic and includes a first polymer and a conductive filler. The first polymer consists of polyvinylidene difluoride (PVDF), and PVDF exists in different phases such as ?-PVDF, ?-PVDF and ?-PVDF. The total amount of ?-PVDF, ?-PVDF and ?-PVDF is calculated as 100%, and the amount of ?-PVDF accounts for 33% to 42%.

Abstract: A lane change assistance method is provided. The method includes recognizing styles of two traffic lines corresponding to a lane where a vehicle is located. Whether the vehicle violates traffic rules is determined according to the styles of the two traffic lines when the vehicle is performing an operation of changing lanes. A prompt is issued when the vehicle violates traffic rules.

Abstract: A parking assistance method is provided. The method includes recognizing image features of a traffic line corresponding to a parking position of a vehicle. A category of the parking position of the vehicle is determined based on the image features of the traffic line. Once the vehicle is determined to be parking illegally based on the category of the parking position of the vehicle; a warning is issued.

Abstract: A lane change assistance method is provided. The method includes recognizing styles of two traffic lines corresponding to a lane where a vehicle is located. Whether the vehicle violates traffic rules is determined according to the styles of the two traffic lines when the vehicle is performing an operation of changing lanes. A prompt is issued when the vehicle violates traffic rules.

Abstract: A driving assistance method for operating a vehicle includes establishing a database, wherein the database includes pre-stores keywords, the keywords are defined as words related to traffic; obtaining electronic texts of traffic rules; extracting keywords in the electronic texts according to the database; generating a trigger condition based on the extracted keywords; obtaining a plurality of current driving parameters of the vehicle; and sending a driving assistance command when the current driving parameters satisfy the trigger condition. The invention also provides a vehicle using the driving assistance method.

Abstract: A parking assistance method is provided. The method includes recognizing image features of a traffic line corresponding to a parking position of a vehicle. A category of the parking position of the vehicle is determined based on the image features of the traffic line. Once the vehicle is determined to be parking illegally based on the category of the parking position of the vehicle; a warning is issued.

Abstract: A route planning system applied in a server or in a mobile client device can plan a travel route according to client device location information. The route planning system includes an obtaining module, a selection module, and a calculation module. The obtaining module obtains the client device location information. The selection module determines a distance or scanning range according to the client device location information, and selects first pictures from the server or the client device of destinations or attractions which are within the scanning range, according to the location information of all the stored pictures. The calculation module calculates at least one route according to the location information of the first pictures. A route planning method is also provided.

Abstract: A music play method includes detecting at least one group of dynamic parameters of an electronic device and obtaining detected dynamic parameters. Once a music playlist of the electronic device is determined to be adjusted according to the detected dynamic parameters, the music play is adjusted according to the detected dynamic parameters and an adjusted music playlist is obtained.

Abstract: A route planning system applied in a server or in a mobile client device can plan a travel route according to client device location information. The route planning system includes an obtaining module, a selection module, and a calculation module. The obtaining module obtains the client device location information. The selection module determines a distance or scanning range according to the client device location information, and selects first pictures from the server or the client device of destinations or attractions which are within the scanning range, according to the location information of all the stored pictures. The calculation module calculates at least one route according to the location information of the first pictures. A route planning method is also provided.

Abstract: A music play method includes detecting at least one group of dynamic parameters of an electronic device and obtaining detected dynamic parameters. Once a music playlist of the electronic device is determined to be adjusted according to the detected dynamic parameters, the music play is adjusted according to the detected dynamic parameters and an adjusted music playlist is obtained.

Abstract: A method for providing music service includes generating a music playlist. The music playlist is sent to a terminal device. At least one group of dynamic parameters is received from the terminal device. The music playlist is adjusted according to the least one group of dynamic parameters when the dynamic parameters is received. Once an adjusted music playlist is obtained, the adjusted music playlist is sent to the terminal device.