Abstract: The disclosure relates to the technical field of traction batteries, and in particular to a battery pack and a vehicle comprising the battery pack. The invention aims at the problem of large heat loss in the existing traction battery in a low-temperature environment. To this end, the battery pack of the disclosure comprises: a frame internally formed with an installation site; a battery module mounted in the installation site and comprising a number of cells; and a side beam connected to an outer side wall of the frame and made of a first thermal insulation material. The above arrangement can reduce the heat transfer coefficient of natural convection between the side wall of the frame and the environment, and reduce the heat flux, thereby reducing the temperature loss of the cells.

Abstract: The disclosure relates to the technical field of traction batteries, and in particular to a battery pack and a vehicle comprising the battery pack. The invention aims at the problem of large heat loss in the existing traction battery in a low-temperature environment. To this end, the battery pack of the disclosure comprises: a frame internally formed with an installation site; a battery module mounted in the installation site and comprising a number of cells; and a side beam connected to an outer side wall of the frame and made of a first thermal insulation material. The above arrangement can reduce the heat transfer coefficient of natural convection between the side wall of the frame and the environment, and reduce the heat flux, thereby reducing the temperature loss of the cells.

Abstract: This disclosure provides a battery system, an SOC estimation method for the battery system, a computer apparatus, and a medium, the method comprising: mapping an upper limit and a lower limit of the state of charge of the second-system battery to a state of charge interval of the battery system, to establish a mapping relationship between the upper limit and the lower limit of the state of charge of the second-system battery and the state of charge interval of the battery system; and calculating the state of charge of the second-system battery and estimating a state of charge of the battery system according to the mapping relationship.

Abstract: An estimation method for a battery system includes mapping an upper limit and a lower limit of the state of charge of the second-system battery to a state of charge interval of the battery system, to establish a mapping relationship between the upper limit and the lower limit of the state of charge of the second-system battery and the state of charge interval of the battery system. The method includes calculating the state of charge of the second-system battery and estimating a state of charge of the battery system according to the mapping relationship.

Abstract: The disclosure discloses a battery pack and a method for thermal management of a battery pack. The battery pack includes a battery cell and a housing, wherein the battery cell is accommodated in the housing, a cooling plate is arranged under the housing, the cooling plate can transfer heat of the battery cell to the outside of a vehicle, the housing is filled with an immersion liquid, and the battery cell is at least partially immersed in the immersion liquid. According to the disclosure, the temperature of the battery pack can be regulated in a simple manner.

Abstract: 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.

Abstract: The invention relates to a traction battery pack, comprising at least one battery pack assembly each comprising: a battery module array, which comprises a plurality of battery modules arranged in an arrangement direction, each of the battery modules comprising a plurality of cells, cell heat-insulating elements being arranged between adjacent cells, and module heat-insulating elements being arranged on two sides of each of the battery modules in the arrangement direction; a top assembly and a bottom assembly located at the top and bottom of the plurality of battery modules, respectively; side beams arranged on two sides of the battery module array respectively in a direction perpendicular to the arrangement direction, the side beams extending substantially parallel to the arrangement direction; and a smoke discharge channel, which communicates with the outside through a valve, the valve being capable of discharging a gas in the smoke discharge channel to the outside under a set condition.

Abstract: The invention provides a battery pack, a method and a vehicle. The battery pack battery has a cell group. The cell group comprises a lithium iron phosphate cell and a ternary lithium-ion cell, wherein the lithium iron phosphate cell and the ternary lithium-ion cell are arranged in series with each another.

Abstract: The invention provides a battery pack and a vehicle. A cell group is configured in the battery pack, and the cell group comprises a plurality of cells, wherein the cells comprise first cells and second cells, the first cells have a better cold resistance than the second cells, and arrangement positions of the first cells and the second cells depend on the heat dissipation capacity in the battery pack.

Abstract: This disclosure provides a battery system, an SOC estimation method for the battery system, a computer apparatus, and a medium, the method comprising: mapping an upper limit and a lower limit of the state of charge of the second-system battery to a state of charge interval of the battery system, to establish a mapping relationship between the upper limit and the lower limit of the state of charge of the second-system battery and the state of charge interval of the battery system; and calculating the state of charge of the second-system battery and estimating a state of charge of the battery system according to the mapping relationship.

Abstract: The disclosure relates to the technical field of traction batteries, and in particular to a battery pack and a vehicle comprising the battery pack. The invention aims at the problem of large heat loss in the existing traction battery in a low-temperature environment. To this end, the battery pack of the disclosure comprises: a frame internally formed with an installation site; a battery module mounted in the installation site and comprising a number of cells; and a side beam connected to an outer side wall of the frame and made of a first thermal insulation material. The above arrangement can reduce the heat transfer coefficient of natural convection between the side wall of the frame and the environment, and reduce the heat flux, thereby reducing the temperature loss of the cells.