A battery pack includes: battery cells; and a measurement circuit unit to measure temperature information of the battery cells, the measurement circuit unit including: a first measurement circuit unit including a first type temperature measurement element; and a second measurement circuit unit including a second type temperature measurement element having a different characteristic of a resistance change according to a temperature change from that of the first type temperature measurement element. The first measurement circuit unit and the second measurement circuit unit are on a common base substrate, or on different individual base substrates from each other.

An electrical device including a surface which may be exposed to heat derived from operation of the electrical device such that the temperature of the surface increases during operation. The surface includes a temperature sensor including first and second electrodes separated by a layer of control material. The material properties and/or configuration of the control material are selected such that the electrical conductivity of the control material increases with increasing temperature so that electrical current is able to pass between the first and second electrodes once the temperature of any part of the control material has reached or exceeded a predetermined temperature. The temperature sensor extends over substantially the whole of the surface. A system including the electrical device and a method of controlling the electrical device is also disclosed.

A battery pack includes a cell block including battery cells electrically connected to each other, the cell block having a pair of long sides and a pair of short sides which surround lateral surfaces of the battery cells and are tangent to the lateral surfaces of the battery cells, and a flexible wiring surrounding the cell block in a direction parallel to the pair of long sides of the cell block, the flexible wiring including sensors to detect state information from the battery cells.

A sensing system for a battery includes a flex foil substrate including a first cover layer. A conductive layer defines a trace pattern including traces. A second cover layer defines a first opening. The conductive layer is sandwiched between the first cover layer and the second cover layer. The first opening exposes a first trace and a second trace of the trace pattern. A busbar is attached to the first cover layer of the flex foil substrate. A temperature sensor is connected to the first trace and the second trace of the trace pattern in the first opening of the first cover layer.

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).

The present disclosure provides a smart vehicle battery clip, comprising: two battery clips, an isolated power output circuit, an isolated polarity detection circuit, a polarity discrimination circuit, a protection circuit, a micro control unit and a power supply line, the isolated power output circuit is coupled with the two battery clips, the isolated polarity detection circuit and the isolated power output circuit are spaced apart, and the isolated polarity detection circuit is coupled with the two battery clips; the polarity discrimination circuit and the isolated polarity detection circuit are oppositely arranged, and the polarity discrimination circuit is isolated from the isolated polarity detection circuit; the micro control unit is coupled with the isolated power output circuit, the polarity discrimination circuit, the EC5 public socket, and the protection circuit; the power supply line is spaced apart from the micro control unit.

The present disclosure discloses a cylindrical or button battery. The battery includes a cap, a shell and a ring seal, wherein the cap and the shell are both of a tubular structure having a cover portion and are fitted together to form a hermetic space for accommodating a battery cell; the ring seal is located between a side wall of the cap and a side wall of the shell and is capable of shrinking or being torn when reaching a set temperature so as to form a slit between the side wall of the cap and the side wall of the shell to release pressure. The ring seal of the battery can shrink or be torn at the set temperature to release pressure, and therefore the battery is characterized by excellent safety.

A secondary battery protection circuit for controlling charge and discharge using a switching circuit to protect a secondary battery from temperature is provided. The switching circuit is configured to be provided in a charge-and-discharge path between the secondary battery and an external device. The secondary battery protection circuit includes a detection terminal configured to be electrically connected, via a resistor, to between the switching circuit and the external device. The secondary battery protection circuit includes a first terminal configured to be electrically connected to a temperature detection terminal of the external device. The secondary battery protection circuit includes a second terminal to which a temperature sensitive element is configured to be electrically connected, the temperature sensitive element having a characteristic value varying in accordance with a change in temperature of the secondary battery.

A battery cell includes a housing, an electrode assembly, a positive electrode column and a negative electrode column. The housing includes an accommodation cavity accommodating the electrode assembly. The positive electrode column and the negative electrode column are electrically connected to the electrode assembly, the positive electrode column and the negative electrode column respectively protrude from an outer end surface of the housing, the outer end surface is concave toward the accommodation cavity to form a concave part, and the concave part is disposed between the positive electrode column and the negative electrode column. A protecting member disposed at the concave part, the protecting member is electrically connected to the positive electrode column, and the protecting member is used for electrical connection with an external device or an external circuit. The concave part in the housing is formed concavely toward the accommodation cavity of the housing.

The disclosure relates to a protective device for an electronic component connected to an electrical interface, comprising: a detection device for detecting electrical voltage and/or electrical current at the electronic component; a monitoring device; an electronic switch connected in series with the electronic component for disconnecting the electronic component from the electrical interface in the event that an impermissibly high electrical voltage is applied at the electronic component, wherein at least double the nominal voltage is identified as an impermissibly high electrical voltage, wherein in the event that an impermissibly high electrical voltage is no longer detected at the electronic component, the electronic component can be connected to the interface by means of the electronic switch.