There is provided a battery pack capable of supplying a stable output and of being charged stably in a low temperature environment (for instance, 0° C. or lower). A battery pack (1) includes: a battery group (11) having a first battery (10A) and a second battery (10B) disposed around the first battery (10A); and a heater (14) that is disposed on an outer peripheral side of the battery group (11), famed by the second battery (10B), and that generates heat by being energized by the first battery (10A). The first battery (10A) is allowed to be charged and discharged with a higher current than a current of the second battery (10B) in a temperature range lower than or equal to a predetermined temperature.

There is provided a battery pack capable of supplying a stable output and of being charged stably in a low temperature environment (for instance, 0° C. or lower). A battery pack (1) includes: a battery group (11) having a first battery (10A) and a second battery (10B) disposed around the first battery (10A); and a heater (14) that is disposed on an outer peripheral side of the battery group (11), famed by the second battery (10B), and that generates heat by being energized by the first battery (10A). The first battery (10A) is allowed to be charged and discharged with a higher current than a current of the second battery (10B) in a temperature range lower than or equal to a predetermined temperature.

A battery temperature control device comprises: a battery including a battery cell; and a thermally conductive member having one end portion thermally connected to the battery, wherein another end portion of the thermally conductive member is thermally connected to a fin of a condenser and/or an evaporator, and the fin of the condenser and/or the evaporator is disposed at a passage through which a fluid flows and the passage is brandied into a plurality of paths at a position downstream of the fin of the condenser and/or the evaporator in a direction of a flow of the fluid.

A heater control system for a battery pack and a method for the same in accordance with the present invention relate to a system and a method for the same in which according to temperature deviations generated during heating operations of heaters provided in each battery pack, between battery packs and cells included in the battery packs, each heater is individually controlled to allow the battery packs and the battery cells therein to be heated to a uniform temperature state.

A heater control system for a battery pack and a method for the same in accordance with the present invention relate to a system and a method for the same in which according to temperature deviations generated during heating operations of heaters provided in each battery pack, between battery packs and cells included in the battery packs, each heater is individually controlled to allow the battery packs and the battery cells therein to be heated to a uniform temperature state.

Provided is a battery heating system, a battery device and an electric vehicle. The battery heating system includes: a battery pack having multiple battery cells; a plurality of heating resistors, each heating resistor is connected to a corresponding battery cell and is configured to heat the connected battery cell; a switching circuit, which is connected to each battery cell and each heating resistor; a controller, which is connected to the switch circuit and is configured to select one or more battery cells for discharging and one or more battery cells to be heated from the plurality of battery cells according to the temperature and/or energy of each battery cell, and control switches in the switching circuit to switch on/off, so that the current of the one or more battery cells for discharging flows through the corresponding heating resistor to heat the one or more battery cells to be heated.

Provided is a battery heating system, a battery device and an electric vehicle. The battery heating system includes: a battery pack having multiple battery cells; a plurality of heating resistors, each heating resistor is connected to a corresponding battery cell and is configured to heat the connected battery cell; a switching circuit, which is connected to each battery cell and each heating resistor; a controller, which is connected to the switch circuit and is configured to select one or more battery cells for discharging and one or more battery cells to be heated from the plurality of battery cells according to the temperature and/or energy of each battery cell, and control switches in the switching circuit to switch on/off, so that the current of the one or more battery cells for discharging flows through the corresponding heating resistor to heat the one or more battery cells to be heated.

A lithium-ion battery system and a control method for combined internal and external heating are provided. A battery is heated in a low-temperature environment through combined internal and external heating. The energy released during self-heating of the battery is fully used, and rapid heating of the battery in the low-temperature environment is implemented. A current adjustment module in a heating module is controlled to adjust a switch on-off frequency and a current on-off time during the heating, and loops with different heating resistances in a multi-loop heating film are selected through a resistance adjustment switch. In this way, target heating requirements of the battery are met, such as a high heating rate in a low-temperature environment, low energy consumption during the heating, and a small impact on battery life without jeopardizing safety during the heating.

A lithium-ion battery system and a control method for combined internal and external heating are provided. A battery is heated in a low-temperature environment through combined internal and external heating. The energy released during self-heating of the battery is fully used, and rapid heating of the battery in the low-temperature environment is implemented. A current adjustment module in a heating module is controlled to adjust a switch on-off frequency and a current on-off time during the heating, and loops with different heating resistances in a multi-loop heating film are selected through a resistance adjustment switch. In this way, target heating requirements of the battery are met, such as a high heating rate in a low-temperature environment, low energy consumption during the heating, and a small impact on battery life without jeopardizing safety during the heating.

A battery coolant heater assembly including a coolant manifold having liquid coolant pathways and a heat transfer surface for transferring heat to liquid coolant flowable within the coolant manifold, an electric heater element thermally contacted to the heat transfer surface of the manifold, and a cover sealably enclosing the heating element between the heat transfer surface and the cover via a gasket. The electric heater element is electrically connected via an electrical connector extending through and formed integrally with the gasket.