A thermal runaway detection circuit, comprising: a sensing module comprising a terminating resistor, wherein the terminating resistor is connected to a temperature sensitive cable (A, B), wherein a distance between at least a portion of the temperature sensitive cable (A, B) and a cell of a battery pack is less than a temperature sensitive distance threshold, and wherein the temperature sensitive cable (A, B) comprises a wire A and a wire B which are in a twisted-pair structure, the wire A and the wire B are wrapped with heat-sensitive material, the heat-sensitive material is to melt when its temperature exceeds a high-temperature threshold; a detection module comprising a first voltage dividing resistor set and a second voltage dividing resistor set, wherein the first voltage dividing resistor set comprises at least a resistor, the second voltage dividing resistor set comprises at least a resistor, and wherein the first voltage dividing resistor set is connected to the terminating resistor via the wire A and the second voltage dividing resistor set is connected to the terminating resistor via the wire B so that the first voltage dividing resistor set, the terminating resistor, and the second voltage dividing resistor set are connected in series via the temperature sensitive cable (A, B), and wherein one end of the first voltage dividing resistor set is connected to a first power supply terminal, and one end of the second voltage dividing resistor set is connected to ground; and a processing module connected to the detection module, wherein the processing module is configured to obtain thermal runaway detection data, wherein the thermal runaway detection data comprises first sampled data collected from a first sampling point and second sampled data collected from a second sampling point, the first sampling point is disposed between the other end of the first voltage dividing resistor set and the terminating resistor, and the second sampling point is disposed between the other end of the second voltage dividing resistor set and the terminating resistor, and wherein the processing module is further configured to: determine an on-off state of the temperature sensitive cable (A, B) based on the first sampled data and the second sampled data, the on-off state comprising a short-circuit state, an open-circuit state, or a normal-path state; and determine whether thermal runaway occurs in the battery pack based on the on-off state of the temperature sensitive cable (A, B). a sensing module comprising a terminating resistor, wherein the terminating resistor is connected to a temperature sensitive cable (A, B), wherein a distance between at least a portion of the temperature sensitive cable (A, B) and a cell of a battery pack is less than a temperature sensitive distance threshold, and wherein the temperature sensitive cable (A, B) comprises a wire A and a wire B which are in a twisted-pair structure, the wire A and the wire B are wrapped with heat-sensitive material, the heat-sensitive material is to melt when its temperature exceeds a high-temperature threshold; a detection module comprising a first voltage dividing resistor set and a second voltage dividing resistor set, wherein the first voltage dividing resistor set comprises at least a resistor, the second voltage dividing resistor set comprises at least a resistor, and wherein the first voltage dividing resistor set is connected to the terminating resistor via the wire A and the second voltage dividing resistor set is connected to the terminating resistor via the wire B so that the first voltage dividing resistor set, the terminating resistor, and the second voltage dividing resistor set are connected in series via the temperature sensitive cable (A, B), and wherein one end of the first voltage dividing resistor set is connected to a first power supply terminal, and one end of the second voltage dividing resistor set is connected to ground; and a processing module connected to the detection module, wherein the processing module is configured to obtain thermal runaway detection data, wherein the thermal runaway detection data comprises first sampled data collected from a first sampling point and second sampled data collected from a second sampling point, the first sampling point is disposed between the other end of the first voltage dividing resistor set and the terminating resistor, and the second sampling point is disposed between the other end of the second voltage dividing resistor set and the terminating resistor, and wherein the processing module is further configured to: determine an on-off state of the temperature sensitive cable (A, B) based on the first sampled data and the second sampled data, the on-off state comprising a short-circuit state, an open-circuit state, or a normal-path state; and determine whether thermal runaway occurs in the battery pack based on the on-off state of the temperature sensitive cable (A, B). determine an on-off state of the temperature sensitive cable (A, B) based on the first sampled data and the second sampled data, the on-off state comprising a short-circuit state, an open-circuit state, or a normal-path state; and determine whether thermal runaway occurs in the battery pack based on the on-off state of the temperature sensitive cable (A, B).