Abstract: A battery protection bottom plate, a composite protection structure for a battery pack, and a vehicle are provided. The battery protection bottom plate includes an upper fiber-reinforced resin layer, a metal plate and a lower fiber-reinforced resin layer. The metal plate is located between the upper fiber-reinforced resin layer and the lower fiber-reinforced resin layer. The upper fiber-reinforced resin layer and the lower fiber-reinforced resin layer meet the following conditions: 0.4?d2/d1?2, and d1 is a thickness of the lower fiber-reinforced resin layer measured in mm, and d2 is a thickness of the upper fiber-reinforced resin layer measured in mm.

Abstract: A vehicle is provided with a battery pack comprising a heat radiator assembly. The heat radiator assembly comprises a first heat radiator, a second heat radiator, a third heat radiator, and at least one fourth heat radiator. The third heat radiator is coupled between the first heat radiator and the second heat radiator. The third heat radiator is separately communicated with the first heat radiator and the second heat radiator; the at least one fourth heat radiator is coupled between the first heat radiator and the second heat radiator; the at least one fourth heat radiator and the third heat radiator are arranged side by side between the first heat radiator and the second heat radiator; the first heat radiator and the second heat radiator are both stamping plate-type heat radiators; and the fourth heat radiator is a harmonica tube-type heat radiator.

Abstract: A battery protection bottom plate includes a protective layer, a metal plate, and a fiber-reinforced resin layer. The metal plate is located between the protective layer and the fiber-reinforced resin layer, and the metal plate and the fiber-reinforced resin layer satisfies: 0 . 4 ? d 1 d 2 * e - ? 0 * ? 2 ? 0 * ? 2 + 0.5 ? 2. where d1 is a thickness of the fiber-reinforced resin layer in mm, d2 is a thickness of the metal plate in mm, ?2 is an elongation at break of the metal plate, ?2 is a tensile strength of the metal plate in MPa, ?0 is an elongation at break of the fiber-reinforced resin layer, and ?0 is a tensile strength of the fiber-reinforced resin layer in MPa.

Abstract: A harmonica-shaped tube, a harmonica-shaped tube type heat exchanger and a vehicle are provided. The harmonica-shaped tube includes a plurality of flow channels arranged at intervals. Inner walls of at least some flow channels include protrusions protruding in a direction approaching centers of the flow channels and/or include recesses recessing in a direction away from the centers of the flow channels. The protrusions and recesses enable a liquid fluid (e.g., refrigerant) to nucleate rapidly, and can also burst large nucleuses which grow in a disorderly manner, thereby preventing the large nucleuses from forming boundary layers on inner walls of the plurality of flow channels, such that nucleuses can be separated from inner wall surfaces rapidly. Therefore, heat exchange performance of the harmonica-shaped tube is improved, and heat exchange requirements of a traction battery are satisfied.

Abstract: A battery protection bottom plate, a composite protection structure for a battery pack, and a vehicle. The battery protection bottom plate comprises an upper fiber reinforced resin layer, a metal plate, a fiber reinforced resin frame, and a lower fiber reinforced resin layer; the metal plate and the fiber reinforced resin frame are located between the upper fiber reinforced resin layer and the lower fiber reinforced resin layer; the metal plate is located inside the fiber reinforced resin frame; the top surface of the fiber reinforced resin frame is integrally connected to the upper fiber reinforced resin layer; the bottom surface of the fiber reinforced resin frame is integrally connected to the lower fiber reinforced resin layer.

Abstract: The battery pack composite includes a battery pack and a battery protection bottom plate. The battery protection bottom plate includes a metal plate and is disposed below the battery pack. A buffer zone is disposed between the battery pack and the battery protection bottom plate, and the buffer zone and the metal plate satisfying: 0.018 ? ( d - 0.4 ) ? h ? * ? ? 0 . 0 ? 8 ? 5 , where d is a thickness in mm of the metal plate, ? is a tensile strength in MPa of the metal plate, ? is an elongation at break of the metal plate, and h is a height in mm of the buffer zone.

Abstract: A battery protective bottom plate, a battery pack composite protective structure and a vehicle. The battery protective bottom plate comprises an upper fiber reinforced resin layer, a metal plate and a lower fiber reinforced resin layer, wherein the metal plate is located between the upper fiber reinforced resin layer and the lower fiber reinforced resin layer, and the following condition is satisfied: (I) 1 ? ? 2 * ( d 1 + d 2 + d 3 ) / d 2 ? 2 + ( ? 1 * d 1 + ? 3 * d 3 ) / ( d 1 + d 3 ) * ( ? 1 * d 1 + ? 3 * d 3 ) / ( d 1 + d 3 ) ? 2 ? 2 .

Abstract: A battery pack includes a controller, a battery core, a liquid leakage detector, and a pre-charge switch. The liquid leakage detector is connected with the controller, and the liquid leakage detector is configured to send a liquid leakage signal to the controller when detecting that liquid leakage occurs in the battery core. The controller is configured to prohibit sending a pre-charge on signal to the pre-charge switch upon receiving the liquid leakage signal while receiving a start signal for starting the battery core. The pre-charge switch is configured to prohibit connection of the pre-charge voltage end and the power output end when not receiving the pre-charge on signal, to prohibit the battery core from outputting a pre-charge voltage through the power output end.

Abstract: The present disclosure discloses a protective plate for a battery pack, a battery pack and a vehicle. The protective plate includes a first fiber-resin composite layer, a metal layer and a buffering layer laminated in sequence.

Abstract: A battery cell assembly, a battery pack, and a vehicle are provided. The battery cell assembly includes at least two battery cells, a battery cell bracket, a flexible circuit board, and a connecting sheet. The at least two battery cells are disposed in a butt joint mode along the length direction of the battery cells. The battery cell bracket is connected at a junction position between adjacent battery cells. The flexible circuit board is disposed on the top surface of the battery cell. The connecting sheet is fixed on the battery cell bracket, the connecting sheet is connected to tabs of the battery cells and the flexible circuit board, the connecting sheet has a sampling section, and the sampling section is located on the top surfaces of the battery cells and is configured to be connected to an external sampling device to sample the battery cells.

Abstract: A power distribution apparatus includes a base including an interface area, a high-voltage connection part and a low-voltage connection part fixed in the interface area. The power distribution apparatus further includes a high-voltage loop at least partially disposed on the base, being electrically connected with the high-voltage connection part, and having a battery positive-electrode connection end and a battery negative-electrode connection end. The components connected in the high-voltage loop is electrically connected to each other. The high-voltage loop includes a disconnecting switch core fixed on the base. A circuit board is disposed on the base, and a low-voltage loop is integrated into the circuit board. The high-voltage loop and the low-voltage connection part are plugged into the circuit board and electrically connected to the low-voltage loop.

Abstract: A power distribution apparatus includes: a base, a high-voltage connection part and a low-voltage connection part being fixed on the base, a high-voltage loop, a circuit board disposed on the base, a low-voltage loop integrated into the circuit board and electrically connected to the low-voltage connection part, and tabs. At least a portion of the high-voltage loop is disposed on the base. The high-voltage loop is electrically connected to the high-voltage connection part, has a positive-electrode connection end and a negative-electrode connection end, and includes a disconnecting switch core fixed on the base. A first end of each of the tabs is electrically connected to the high-voltage loop, and a second end of each of the tabs is plugged into the circuit board for electrical connection with the low-voltage loop.

Abstract: A battery cold plate includes two external interfaces, two convergence pipelines, and multiple branches. The two external interfaces are respectively in communication with the middle positions of the two convergence pipelines, so that the flow path of cooling liquid in the convergence pipeline is enabled to be half of the length of the convergence pipeline. The multiple branches are arranged side by side, and both ends of each of the branches are respectively in communication with the two convergence pipelines through multiple throttling ports. The total cross-sectional area of multiple throttling ports in a branch close to the external interface is less than the total cross-sectional area of multiple throttling ports in a branch away from the external interface, the cross-sectional areas of various sub-branches are the same.

Abstract: A battery pack, includes: an enclosure; a cell disposed in the enclosure; and a distribution box disposed in the enclosure. The enclosure includes a housing and a cover body, a side of the housing including a picking and placing opening, the cover body disposed on the side of the housing to cover the picking and placing opening, the distribution box located in the housing close to the picking and placing opening, and the housing, the cover body, and a metal plate of the distribution box surrounding the cell.

Abstract: The present disclosure provides a battery box, a battery pack with the battery box, and a vehicle. The battery box includes a metal frame. Multiple accommodating cavities for accommodating cells are formed in the metal frame. An inner surface of the accommodating cavity is provided with an insulation coating. A thickness D of the insulation coating meets: D = V × A p × I . I represents a test current, V represents a test voltage, and p represents a volume resistivity of the insulation coating; D represents a spraying thickness of the insulation coating; and A represents a total spraying area of the insulation coating.

Abstract: Provided are a battery pack using a method for assembling a battery pack and a vehicle. The battery pack includes a box and battery modules. The box is provided with cavities inside. The battery module includes foam and multiple cells. The foam is arranged between adjacent cells. The method for assembling a battery pack includes the following steps: the battery module is loaded into an insulating bag; the insulating bag is vacuumized so that the foam is compressed to reduce the volume of the battery module; and after the battery module of the reduced volume is inserted into the cavity, a vacuum state is released and positive and negative electrodes of the battery module are exposed.

Abstract: A battery pack includes: a battery box having a distribution cavity; a distribution box disposed in the distribution cavity; the distribution box including a panel; the panel having a first flow channel and a refrigerant inlet/outlet joint in communication with the first flow channel; and a thermoregulation member connected with the battery box; the thermoregulation member having a second flow channel in communication with the first flow channel.

Abstract: The present disclosure relates to a battery pack power connection system and a vehicle. The battery pack power connection system comprises a battery pack, a tray, a distribution box, a first drive connector, and a power connector. The battery pack comprises a plurality of battery cores. The tray is configured to support the battery pack. The distribution box is configured to distribute input or output information of the battery pack. One end of the first drive connector is connected with a first power system. The power connector is arranged in a cavity inner space of the tray, and the power connector is located between the plurality of battery cores. One end of the power connector is connected with the distribution box, and another end of the power connector is connected with another end of the first drive connector.

Abstract: A sampling structure includes a battery information collector, a plurality of fuses, and a plurality of collection lines. First ends of the collection lines are configured to be connected with corresponding batteries. Connection terminals are arranged on second ends of the collection lines. A plurality of pads are arranged on the battery information collector. First ends of the fuses are welded to the corresponding connection terminals. Second ends of the fuses are welded to the corresponding pads.

Abstract: A battery pack includes a box, a sealing cover, a battery string, a sampling structure, and a battery information collector configured to be connected with a battery management system. The battery string and the sampling structure are arranged inside the box. The battery string includes multiple electrically connected batteries. The sampling structure includes multiple sampling lines. First ends of the sampling lines are connected with the corresponding batteries. Second ends of the sampling lines are connected with the battery information collector. The box is provided with an opening. The battery information collector is arranged at the opening of the box. The sealing cover is located on an outer side of the battery information collector. The sealing cover is configured to seal the opening of the box.