Battery data sampling device, sampling method and battery management controller

The invention provides a battery data sampling device, a sampling method and a battery management controller. The sampling device comprises a queue data structure, a first core layer and a second core layer, the queue data structure is configured to store a voltage/temperature data reading task in a current voltage/temperature sampling period; the first core layer is configured to trigger current sampling when the task state of the queue data structure is idle and a preset current sampling condition is met, and store all voltage/temperature data reading tasks in a current voltage/temperature sampling period into the queue data structure when a preset voltage/temperature data reading condition is met; and the second core layer is configured to trigger current sampling and pause residual tasks in the queue data structure until the current sampling is completed when the task state of the queue data structure is non-idle and a preset current sampling condition is met, so that the task state of the queue data stru