Abstract: The present invention discloses an ?-silane coupling agent and application thereof. The ?-silane coupling agent has a structure formula of formula (I): R1 is alkyl with 1 to 6 carbon atoms; R2 is alkyl with 1 to 6 carbon atoms; R3 is alkyl with 1 to 6 carbon atoms; R4 or R5 is selected from one of hydrogen, alkyl with 1 to 18 carbon atoms, aryl, benzyl, ester-containing group, carbamido-containing group or heterocyclic alkane; R4 and R5 are the same or different. The ?-silane coupling agent is applied to silicone rubber, which can be cured without adding a catalyst, and the curing speed is fast; the ?-silane coupling agent has strong reactivity, the surface curing time is less than 2 minutes; and the ?-silane coupling agent has good stability, which can be stored stably under conditions at room temperature for 6 months, and does not easily turn yellow.

Abstract: The present invention discloses an ?-silane coupling agent and application thereof. The ?-silane coupling agent has a structure formula of formula (I): R1 is alkyl with 1 to 6 carbon atoms; R2 is alkyl with 1 to 6 carbon atoms; R3 is alkyl with 1 to 6 carbon atoms; R4 or R5 is selected from one of hydrogen, alkyl with 1 to 18 carbon atoms, aryl, benzyl, ester-containing group, carbamido-containing group or heterocyclic alkane; R4 and R5 are the same or different. The ?-silane coupling agent is applied to silicone rubber, which can be cured without adding a catalyst, and the curing speed is fast; the ?-silane coupling agent has strong reactivity, the surface curing time is less than 2 minutes; and the ?-silane coupling agent has good stability, which can be stored stably under conditions at room temperature for 6 months, and does not easily turn yellow.

Abstract: A power battery pack and a power battery system are provided. The power battery pack comprises: a plurality of single batteries, each single battery comprising a plurality of battery units, in which an nth battery unit in the plurality of battery units in each single battery is connected with an nth battery unit in the plurality of battery units in an adjacent single battery in series to form an nth loop, where n?1.

Abstract: An end cover assembly for a battery with a core comprises a contact terminal, a conductive element, and a thermistor. The conductive element is in electrical communication with the core of the battery. The thermistor is disposed between the terminal and the conductive element. The thermistor electrically connects the terminal and the conductive element when the temperature of the battery is below a predetermined temperature. The thermistor electrically disconnects the terminal and the conductive element when the temperature of the battery is above the predetermined temperature.