A trailer coupler system can include one or more skid plates made from extruded aluminum, one or more support tubes attached to the skid plates, a plurality of struts having a first end attached to the one or more skid plates, a ball housing attached to a second end of at least two of the plurality of struts, a first towball positioned within the ball housing, an adapter sleeve attached to the ball housing, a support plate extending from a support tube or skid plate to the adapter sleeve, an adapter having a kingpin coupler for coupling to a kingpin of a trailer, and a towball coupler for directly coupling with the first towball.

This invention relates to power takeoff devices (PTOs), which are useful for mounting on transmissions and for performing, directly or indirectly, useful work via the PTO's rotatable output shaft. A system and method designed for quick and convenient installation of a PTO and an attachment element. In some embodiments, the attachment element is an adapter configured to secure a transmission and the PTO is configured to attach to the adapter.

An embodiment skateboard platform for an electric vehicle includes a skateboard frame including a center module, a front module connected to a front of the center module, and a rear module connected to a rear of the center module, and a battery assembly mounted on the skateboard frame, wherein the battery assembly is detachably connected to the center module.

A vehicle body assembly system defines a preset pre-buck section and a preset main-buck section along a conveying route of a floor assembly, and may include: i) pre-buck units which are installed at both sides of the conveying route in the pre-buck section, respectively, restrict lower portions of side assemblies, which vary in accordance with a type of vehicle, with respect to both sides of the floor assembly, and preassemble the lower portions of the side assemblies to the floor assembly by a first welding robot; and ii) main-buck units which are installed at both sides of the conveying route in the main-buck section, respectively, restrict upper portions of the side assemblies preassembled by the pre-buck unit, and post-assemble vehicle body components to the upper portions of the side assemblies by a second welding robot.

A battery pack includes a housing and multiple electrode core strings electrically connected to each other and disposed in the housing. The housing includes a housing body which includes sub-housings connected to each other. A sub-housing includes at least one reinforcing plate and a top plate and a bottom plate oppositely arranged in a first direction. The reinforcing plate is arranged between and is connected to the top plate and the bottom plate, and divides an interior of the corresponding sub-housing into multiple accommodating cavities. At least one accommodating cavity includes at least one electrode core string which includes electrode core assemblies connected and arranged in a second direction. The electrode core assemblies are disposed in an encapsulation film. A length of the electrode core string extends in the second direction. The housing includes a mounting component that is configured to be connected and fixed to an external load.

A heat management system of the present invention comprises: a coolant heater for heating coolant; a first coolant pump which is connected to a coolant inlet or a coolant outlet of the coolant heater to pump the coolant and is coupled to the coolant heater; and a second coolant pump which is connected to a battery side to pump the coolant and is coupled to the coolant heater, wherein the coolant heater, the first coolant pump, and the second coolant pump are arranged in an engine room of a vehicle. Thus, a loss of coolant pressure can be reduced in a pipe which connects components constituting a coolant system of the vehicle, such that the performance of the system is improved and noise and vibration in the interior of the vehicle may be reduced.

An assembly includes a vehicle frame having a middle section, a front-section vehicle-forward of the middle section, and a rear section vehicle-rearward of the middle section. The middle section has frame rails spaced from each other and cross-beams extending from one frame rail toward the other frame rail. The frame rails each having a vehicle-forward end and a vehicle-rearward end. The assembly includes one or more electric-vehicle batteries. At least one of the batteries is in one of the cross-beams. The assembly includes two front nodes between and directly connected to the middle section and the front section and two rear nodes between and directly connected to the middle section and the rear section.

A heat management system of the present invention comprises: a coolant heater for heating coolant; a first coolant pump which is connected to a coolant inlet or a coolant outlet of the coolant heater to pump the coolant and is coupled to the coolant heater; and a second coolant pump which is connected to a battery side to pump the coolant and is coupled to the coolant heater, wherein the coolant heater, the first coolant pump, and the second coolant pump are arranged in an engine room of a vehicle. Thus, a loss of coolant pressure can be reduced in a pipe which connects components constituting a coolant system of the vehicle, such that the performance of the system is improved and noise and vibration in the interior of the vehicle may be reduced.

Battery packs for electric passenger vehicles are provided. A battery pack can include a housing with a frame and a plurality of structural cross-members defining module spaces for battery modules to be disposed within the housing. The battery pack can also include a lid cover to go over the housing and enclose the battery modules within the housing and lid cover. The structural cross-members can define pairs of horizontally-adjacent module spaces, where pairs of battery modules can be disposed.

A vehicle body includes a rear pillar, a roof siderail, and a side inner panel. The rear pillar is disposed to a side of a rear hatch, and extends in an up-down direction. The roof siderail extends in a vehicle body front-rear direction at a side of a roof, and a rear end thereof is linked to the rear pillar. The side inner panel is linked to the rear pillar and the roof siderail. The roof siderail has a tubular shape, and bulges further into a vehicle cabin than an upper end of the side inner panel.