BYD Patente

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Provided are a control method and apparatus for a four-wheel drive vehicle, and a vehicle. The method includes: if an auxiliary drive of the four-wheel drive vehicle meets a first forced coupling condition, controlling a wheel-end decoupler of the auxiliary drive to switch from a disengaged state to an engaged state, where the first forced coupling condition includes: A vehicle speed of the four-wheel drive vehicle is less than or equal to a first target vehicle speed, and the wheel-end decoupler is in a disengaged state. In the foregoing technical solution, when the vehicle speed of the vehicle is less than or equal to the first target vehicle speed and the wheel-end decoupler of the auxiliary drive of the four-wheel drive vehicle is in a disengaged state, the wheel-end decoupler of the auxiliary drive is controlled to switch from a disengaged state to an engaged state.

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A vehicle control method, a controller, and a vehicle. The control method comprises: when a locking instruction is received, first controlling a wheel-end decoupler of a differential of a vehicle to execute a coupling operation, and then controlling a differential lock of the differential to execute a locking operation. In this way, when a differential lock performs locking, a wheel-end decoupler has performed coupling in advance, such that the problem of a locking failure caused by executing a locking operation when a wheel end is in an uncoupled state is avoided.

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A vehicle energy recovery method and apparatus are applied to the field of vehicles. After determining a sliding feedback torque of a vehicle in a current operating condition and a maximum allowable feedback torque of the vehicle, a vehicle control unit can perform energy recovery based on a minimum feedback torque between the maximum allowable feedback torque and the sliding feedback torque.

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A vehicle, comprising a top frame longitudinal beam, which extends in the front-rear direction of a vehicle; a C pillar, wherein the top frame longitudinal beam is connected to an upper section of the C pillar, and a lower section of the C pillar is suitable for connecting to a door sill assembly; and a strut beam connected to the top frame longitudinal beam, wherein the strut beam is suitable for connecting to a rear longitudinal beam. The force-bearing capability of the vehicle is improved, thereby ensuring the structural integrity of the vehicle and the member safety.

An electric device is provided, including a battery pack. The battery pack includes a cooling plate for the battery pack. The cooling plate for the battery pack includes a plate body. A cooling flow channel and a confluence flow channel that are used for a coolant to flow are constructed on the plate body, the cooling flow channel forms a plurality of cooling regions on the plate body, the confluence flow channel forms a liquid inlet confluence region and a liquid outlet confluence region on the plate body, and each cooling region separately communicates with the liquid inlet confluence region and the liquid outlet confluence region. The plurality of cooling regions are connected in parallel to each other, a throttling structure is disposed in at least one of the plurality of cooling regions, and a quantity of throttling structures in the plurality of cooling regions progressively decreases from upstream to downstream of a flow direction of the coolant in the liquid inlet confluence region.

Provided are a noise reduction method and apparatus, a terminal device, and a storage medium. The method includes: obtaining a target estimation coefficient, where the target estimation coefficient includes a real part value and an imaginary part value; then, generating, based on a target noise frequency, an original filtered signal whose frequency is the target noise frequency; and obtaining a target filtered signal based on the original filtered signal and the real part value and the imaginary part value in the target estimation coefficient, where the target filtered signal is used to control a speaker to output a filtered acoustic signal, to perform noise reduction on the target noise.

Disclosed are a drive system and a vehicle. The drive system includes a battery pack, a motor, and a controller. The battery pack is configured to provide power, and includes a first sub-battery pack and a second sub-battery pack that are connected in series. The controller connects the battery pack and the motor, to control the motor to work. An A line is further disposed between one end of at least one phase winding of the motor and a midpoint between the first sub-battery pack and the second sub-battery pack that are connected in series, where a part of the A line is connected to at least one filter.

A drive system and a vehicle are provided. The drive system includes a battery pack, a motor, and a controller. The battery pack includes two sub-battery packs connected in series, an A-wire connection terminal of the battery pack with one end connected to a middle of the two sub-battery packs, a positive direct current bus connection terminal of the battery pack, and a negative direct current bus connection terminal of the battery pack. One end of at least one phase of winding of the motor is connected to the other end of the A-wire connection terminal of the battery pack. The controller includes a power module, and the power module is separately connected to the other end of the at least one phase of winding, a positive electrode of the battery pack, and a negative electrode of the battery pack. The A-wire connection terminal of the battery pack is disposed between the positive direct current bus connection terminal of the battery pack and the negative direct current bus connection terminal of the battery pack.

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