The disclosure relates to the technical field of electric vehicles, and in particular, to a control method and apparatus for a traction battery, a vehicle, a medium, and a device, aiming at solving the problem of how to conveniently and efficiently heat a traction battery, especially a large-capacity traction battery. To this end, the control method for a traction battery according to an embodiment of the disclosure comprises analyzing whether each traction battery needs to be heated on the basis of temperature information of the traction battery, and controlling a bidirectional DC converter and the traction battery which needs to be heated to form a charging and discharging circuit to cyclically charge and discharge the traction battery, so as to achieve the goal of heating the traction battery. By means of the foregoing steps, the characteristic of high internal resistance of a lithium-ion traction battery at a low temperature can be used to make the traction battery generate heat by means of a cyclic charging and discharging process, to achieve the heating of the traction battery, that is, the performance of the traction battery can be improved, the time for charging the traction battery is reduced, and the safety of the traction battery is further improved.

A mitigation control system is arranged in an environment containing an energetic material and includes an abnormal temperature sensor for detecting an abnormal temperature of the environment, a power source that is mechanically actuated by the abnormal temperature sensor when the abnormal temperature exceeds a predetermined abnormal temperature threshold, a mitigation controller that is actuated by the power source, and a plurality of local temperature sensors that are communicatively coupled to the mitigation controller and are arranged for detecting critical temperatures in specific regions of the environment. The mitigation controller executes a mitigation action when one of the critical temperatures exceeds a predetermined critical temperature threshold for the corresponding specific region.

Aspects of the disclosure provide a battery pack and a method for charging the battery pack externally. The battery pack can include a charging port configured to charge the battery pack, a cooling circuit configured to cool the battery pack in a vehicle, and a cooling interface configured to connect the cooling circuit with an external cooling device that is external to the vehicle. The charging port and the cooling interface can be integrated into a charging port assembly, the cooling interface has an inlet port and an outlet port that have high pressure quick disconnect leakless fittings, and the battery pack is configured to be charged externally via the charging port. The battery pack can include a plurality of isolating devices configured to determine whether the cooling circuit is connected to the external cooling device.

A battery pack including a housing having a first portion and a second portion coupled to the first portion. The first portion has a first wall and an interface extends from the first wall. The interface includes a plurality of terminal apertures that provide access to electrical terminals within the housing. The second portion has a second wall, and the second wall is positioned opposite the first wall. A first plurality of vents extends through the first wall and a second plurality of vents extends through the second wall. A cumulative surface area of the first plurality of vents is different than a cumulative surface area of the second plurality of vents.

A method and control system for controlling operation of a thermal control apparatus, the thermal control apparatus configured for thermal control of an energy storage means of a vehicle, the method comprising: obtaining a parameter indicative of a state of health of the energy storage means; and controlling operation of the thermal control apparatus in dependence on a difference between the parameter and a target, wherein the target is indicative of expected state of health, and wherein a rate of change of the target varies in association with cumulative energy throughput of the energy storage means.

A battery module includes a plurality of stacked battery cells, a temperature sensor configured to measure the temperature of the battery cells and be coupled to a wire connected to the outside of the battery module, an inner plate configured to be coupled to the outside of the plurality of stacked battery cells in a stacking direction of the plurality of battery cells to cover the side surfaces of the plurality of battery cells and having a mounting groove to mount the temperature sensor therein, an outer plate configured to be coupled to the outside of the inner plate to apply a surface pressure to the plurality of stacked battery cells, and a fixing part configured to protrude from the inner plate to fix the wire extending from the temperature sensor, in which the fixing part is disposed to avoid the outer plate.

Disclosed is a power storage unit which can safely operate over a wide temperature range. The power storage unit includes: a power storage device; a heater for heating the power storage device; a temperature sensor for sensing the temperature of the power storage device; and a control circuit configured to inhibit charge of the power storage device when its temperature is lower than a first temperature or higher than a second temperature. The first temperature is exemplified by a temperature which allows the formation of a dendrite over a negative electrode of the power storage device, whereas the second temperature is exemplified by a temperature which causes decomposition of a passivating film formed over a surface of a negative electrode active material.

Provided is a battery pack including a surface pressure maintaining structure is provided, which includes a battery cell and a surface pressure maintaining part that is disposed on one side of the battery cell and applies a surface pressure to the battery cell, wherein the surface pressure maintaining part includes a pair of inclination members that are arranged between the battery cells, move in a horizontal direction to press the battery cell, and have spaces therein, and an insertion member that is inserted between the pair of inclination members, allows the inclination members to slide, and has a space therein.

A battery may include a first battery module, a second battery module, and a thermal management component. The first battery module may include a plurality of first battery cells, the second battery module may include a plurality of second battery cells, and the plurality of second battery cells may be located at the peripheries of the first battery cells. The thermal management component may include a first flow channel, a second flow channel, a first inlet through which fluid is input into the first flow channel, and a second inlet through which fluid is input into the second flow channel. The first flow channel and the second flow channel can be formed as two separate flow channels for flowing, so that the first flow channel adjusts temperature of the plurality of first battery cells and the second flow channel adjusts temperature of the plurality of second battery cells.

Provided is a semiconductor device capable of stably estimating an internal temperature of a battery. A semiconductor device coupled to a battery calculates entropy heat of the battery at a predetermined time by using a charging current of the battery and an internal temperature of the battery at a time before a predetermined time, calculates a heat generation amount of the battery from the charging current of the battery, calculates a heat radiation amount of the battery based on a temperature difference between the internal temperature at the time before the predetermined time and a surface temperature of the battery, and estimates an internal temperature of the battery at the predetermined time by using the entropy heat, the heat generation amount and the heat radiation amount.