An electric vehicle battery disconnect bracket configured disconnect one or more battery cells or modules experiencing a thermal event within a battery pack to mitigate propagation of the thermal event throughout the battery pack, including a bracket body formed of a first material on a first major surface of the body, and a second material on an opposing second major surface of the body, the first material having a larger coefficient of thermal expansion than the second material, such that an increase in temperature above a defined threshold experienced by the body causes the first material to expand more than the second material, thereby transitioning the body from a first equilibrium state representing a closed, conductive position to a second equilibrium state representing an open, isolation position.

Thermal management of a backup battery unit for datacenter applications is described. In one embodiment, a backup battery unit includes one or more battery cells immersed in cooling liquid contained in an immersion tank. The immersion tank includes a temperature sensor. The battery unit also includes a first direct-current to-direct-current (DC/DC) converter electronically coupled to the battery cells and to an external power source for converting and controlling a charging voltage obtained from the external power source to charge the battery cells. The backup battery unit also includes a cooling-liquid pump for driving cooling liquid to the battery cells. The backup battery unit also includes a microcontroller coupled to the temperature sensor, the first DC/DC converter, and the cooling-liquid pump. The microcontroller is configured to control operations of the cooling-liquid pump based on temperature data obtained from the temperature sensor and an electrical current of the first DC/DC converter.

The present invention relates to a testing method for the thermal contact between a temperature sensor (50) and a battery cell (10) of a battery module (30), wherein the method comprises the steps of measuring a temperature T.sub.1 of the temperature sensor (50) at a time point t.sub.1, heating the temperature sensor (50) for a defined time (t.sub.2−t.sub.1), measuring a temperature T.sub.2 of the temperature sensor (50) at a time point t.sub.2 and/or a temperature T.sub.3 of the temperature sensor (50) at a time point t.sub.3, and determining the thermal contact between the temperature sensor (50) and the battery cell (10) based on at least one of the temperature differences ΔT.sub.2,1=(T.sub.2−T.sub.1), ΔT.sub.3,1=(T.sub.3−T.sub.1) and/or ΔT.sub.3,2=(T.sub.3−T.sub.2). The invention further relates to a testing circuit (60) for a temperature sensor (50) of a battery module (30), comprising a thermistor (61) with a first node (67) connected to a first supply voltage (65) and a second node (68) connected to ground (69), a switch (63) interconnected between the first node (67) of the thermistor (61) and a second supply voltage (66), and an analog-to-digital converter (64) connected in parallel to the thermistor (61). The invention further relates to a cell supervision circuit (40) for a battery module (30), comprising a circuit carrier (45), a testing circuit (60) according to any one of the claims 1 to 10, and a temperature sensor (50) surface mounted to the circuit carrier (45) and comprising a measuring head (51) with a thermistor (61) configured to be brought into thermal contact with a battery cell (10) of the battery module (30).

A thermal management system for a vehicle and method for controlling a water-heating type PTC heater thereof by controlling a PTC heater that uses water for heating, in which a heat source for heating is secured by operating the water-heating type PTC heater and thereby additionally heating a coolant, while charging a battery, in a thermal management system for a vehicle, during a heating mode, in which: refrigerant circulates through a second heat exchanger, a waste heat recovery chiller, a compressor and an indoor heat exchanger; and the coolant passes through a water-cooling type battery module, the water-heating type PTC heater, a battery chiller, electric parts and the waste heat recovery chiller.

A thermal management system for a vehicle and method for controlling a water-heating type PTC heater thereof by controlling a PTC heater that uses water for heating, in which a heat source for heating is secured by operating the water-heating type PTC heater and thereby additionally heating a coolant, while charging a battery, in a thermal management system for a vehicle, during a heating mode, in which: refrigerant circulates through a second heat exchanger, a waste heat recovery chiller, a compressor and an indoor heat exchanger; and the coolant passes through a water-cooling type battery module, the water-heating type PTC heater, a battery chiller, electric parts and the waste heat recovery chiller.

A cell device including a cell module and at least one temperature adjusting module is provided. The temperature adjusting modules are configured on the cell module in a heat conduction manner. Each of the temperature adjusting modules includes a thermoelectric cooling chip. The thermoelectric cooling chip has a first surface and a second surface opposite to each other. The thermoelectric cooling chip is configured to receive a first electric signal to heat the first surface and cool the second surface. The thermoelectric cooling chip is configured to receive a second electric signal to cool the first surface and heat the second surface. A vehicle including the cell device is also provided. The cell device of the disclosure is capable of implementing active temperature control and has good temperature control effect. The vehicle of the disclosure is capable of implementing active temperature control, and has a wider usage environment temperature.

A cell device including a cell module and at least one temperature adjusting module is provided. The temperature adjusting modules are configured on the cell module in a heat conduction manner. Each of the temperature adjusting modules includes a thermoelectric cooling chip. The thermoelectric cooling chip has a first surface and a second surface opposite to each other. The thermoelectric cooling chip is configured to receive a first electric signal to heat the first surface and cool the second surface. The thermoelectric cooling chip is configured to receive a second electric signal to cool the first surface and heat the second surface. A vehicle including the cell device is also provided. The cell device of the disclosure is capable of implementing active temperature control and has good temperature control effect. The vehicle of the disclosure is capable of implementing active temperature control, and has a wider usage environment temperature.

A battery module includes a housing, assembled from a first side wall, a second side wall, a first end plate, and a second end plate, is configured to support a plurality of battery cells. The battery module also includes a heating pad and a cooling plate that are configured to regulate a thermal state of the plurality of battery cell. The heating pad is disposed substantially adjacent to the plurality of battery cells and the cooling plate is disposed adjacent to the heating pad opposite the plurality of battery cells. A controller associated with the battery module is configured receive an indication of battery temperature and active one of the heating pad or the cooling plate based at least on the battery temperature of the plurality of battery cells.

The battery control circuit includes a first inductor, a first switch tube, a second switch tube, a first diode, and a second diode. A first terminal of the first switch tube and a cathode of the first diode are both coupled to the positive electrode of the battery pack, and a second terminal of the first switch tube is coupled to a terminal of the first inductor and a cathode of the second diode. An anode of the first diode is coupled to another terminal of the first inductor and a first terminal of the second switch tube, and a second terminal of the second switch tube and an anode of the second diode are both coupled to the negative electrode of the battery pack. The first switch tube and the second switch tube are simultaneously turned on or turned off.

The battery control circuit includes a first inductor, a first switch tube, a second switch tube, a first diode, and a second diode. A first terminal of the first switch tube and a cathode of the first diode are both coupled to the positive electrode of the battery pack, and a second terminal of the first switch tube is coupled to a terminal of the first inductor and a cathode of the second diode. An anode of the first diode is coupled to another terminal of the first inductor and a first terminal of the second switch tube, and a second terminal of the second switch tube and an anode of the second diode are both coupled to the negative electrode of the battery pack. The first switch tube and the second switch tube are simultaneously turned on or turned off.