Power-off method and system based on abnormal temperature

Abstract

The invention relates to a power-off method and system. The power-off method according to an embodiment of the present disclosure may comprise: a step of cutting off a portion of a circuit by a trigger unit if a preset temperature is exceeded; turning on the shunt regulator according to an input signal which changes due to the disconnection of the part of the circuit; a step in which the switching unit outputs a cutoff unit control signal to at least one cutoff unit on the basis of the operation of the shunt regulator; and a step in which the at least one cutoff part formed between one end and the other end of the conductor part cuts off power transmission between the one end and the other end of the conductor part on the basis of the cutoff part control signal.

Description

Technical Field

[0001] This disclosure relates to a power-off method and system based on abnormal temperatures. Background Technology

[0002] Battery systems used in electric vehicles or energy storage systems consist of battery modules comprising multiple battery cells and a battery management system for managing the battery modules. When the temperature of the battery system rises abnormally due to overheating, the battery modules may be damaged, and in turn, the battery modules may explode, causing damage to the related electrical systems that receive power from the battery system.

[0003] In particular, thermal runaway may occur during battery handling processes such as charging, discharging, and moving. The temperature rises due to the instability inside the battery, and the chemical reaction accelerates with the rise in temperature, which can trigger a chain reaction to other cells or modules and spread rapidly.

[0004] Therefore, when the temperature of the battery system rises abnormally due to thermal runaway or other phenomena, the battery management system will also exceed the temperature required for normal operation, leading to malfunctions or operational errors and failing to guarantee normal operation. Consequently, the battery system cannot be controlled by the battery management system, and the probability of fire or explosion increases dramatically. Summary of the Invention

[0005] Technical issues This disclosure provides a method and system for detecting thermal runaway of a battery and cutting off the power supply to external circuits based on a fuse and a parallel voltage regulator.

[0006] Technical solution A power-off system according to an embodiment of the present disclosure may include: a trigger unit that cuts off a portion of the circuit if a preset temperature is exceeded; a parallel voltage regulator that is turned on according to an input signal that changes due to the cutting off of the portion of the circuit; a switch unit that outputs a cutting-off control signal to at least one cutting-off unit based on the operation of the parallel voltage regulator; and a cutting-off unit configured between one end and the other end of a conductor portion that cuts off power transmission between the one end and the other end based on the cutting-off control signal.

[0007] According to one embodiment, the power-off system may further include: an abnormal temperature detection unit, which includes the trigger unit, the parallel voltage regulator and the switch unit; and the cut-off unit may be configured to be detachable from the abnormal temperature detection unit.

[0008] According to one embodiment, the switching section may be configured as a relay or a coupler.

[0009] According to one embodiment, the switching unit may be configured as an operating unit and a switch, wherein the operating unit includes an input side that generates an induced electromotive force or light based on the output of the parallel voltage regulator and an output side that outputs a switch control signal based on the induced electromotive force or light; the switch cuts off or allows power transmission in the circuit connected to the switch based on the switch control signal.

[0010] According to one embodiment, the cutting-off section may be composed of a fuse, a switch, or a circuit breaker.

[0011] According to one embodiment, the preset temperature can be a specific temperature within the range of 105 degrees Celsius (°C) to 200 degrees Celsius (°C).

[0012] According to one embodiment, the power-off system may further include: a power supply unit that supplies predetermined power to at least a portion of the trigger unit, the parallel voltage regulator, and the switch unit; and the trigger unit may include: a first resistor, one end of which is connected to the positive terminal of the power supply unit; and a fuse unit, one end of which is connected to the other end of the first resistor, and the other end of which is connected to the negative terminal of the power supply unit.

[0013] According to one embodiment, the fuse portion may be arranged face-to-face with the conductor portion.

[0014] According to one embodiment, the fuse section may include: a second resistor, one end of which is connected to the other end of the first resistor; and a thermal fuse, one end of which is connected to the other end of the second resistor and the other end of which is connected to the negative terminal.

[0015] According to one embodiment, the conducting parallel regulator can output current based on the changing input signal, and the switching unit can be configured to operate using the current output from the parallel regulator.

[0016] According to one embodiment, the power-off system may further include: a third resistor and a Zener diode connected in series, which are used to prevent damage to surrounding circuits caused by surge current generated when the relay or coupler is turned off; wherein the third resistor and Zener diode connected in series may be connected in parallel with the switching section.

[0017] According to one embodiment, the power-off system may further include a fourth resistor, which controls the magnitude of the current flowing through the parallel voltage regulator.

[0018] According to one embodiment, the input signal can be input to the control terminal of the parallel voltage regulator, and the power-off system may further include a capacitor connected between the control terminal and the negative terminal to prevent the parallel voltage regulator from malfunctioning due to noise generated when the voltage input to the control terminal changes.

[0019] According to one embodiment, the conductor portion may be formed between a first object and a second object, at least one of the first object and the second object may be a battery cell, a battery module, or a battery pack unit, or a vehicle.

[0020] According to one embodiment, the power-off system can be configured such that, in the event of thermal runaway of a battery connected to the conductor portion, the triggering unit determines the thermal runaway state of the battery based on the temperature of the conductor portion, and the cutting-off unit cuts off the electrical connection of the conductor portion, thereby preventing damage to the system connected to the battery.

[0021] A power-off method according to an embodiment of the present disclosure may include: a step of triggering a portion of a circuit if a preset temperature is exceeded; a step of turning on a parallel voltage regulator based on an input signal that changes due to the disconnection of the portion of the circuit; a step of a switching unit outputting a disconnection control signal to at least one disconnection unit based on the operation of the parallel voltage regulator; and a step of the at least one disconnection unit, formed between one end and the other end of a conductor, disconnecting the power transmission between the one end and the other end of the conductor based on the disconnection control signal.

[0022] According to one embodiment, the abnormal temperature detection unit, which includes the trigger unit, the parallel voltage regulator, and the switch unit, can be configured to be detachable from the cut-off unit or the conductor unit.

[0023] According to one embodiment, the step of outputting the cut-off control signal can generate an induced electromotive force or light based on the output of the parallel voltage regulator, and output the switch control signal based on the induced electromotive force or light, and cut off or allow power transmission of the circuit connected to the switch based on the switch control signal.

[0024] According to one embodiment, the step of cutting off power transmission can be achieved by using a fuse, switch, or circuit breaker included in the cutting section to cut off power transmission between one end and the other end of the conductor.

[0025] According to one embodiment, the preset temperature can be a specific temperature within the range of 105 degrees Celsius (°C) to 200 degrees Celsius (°C).

[0026] According to one embodiment, the step of cutting off a portion of the circuit can be achieved by the fuse portion included in the trigger portion sensing the temperature of the conductor portion exceeding the preset temperature and cutting off the portion of the circuit.

[0027] According to one embodiment, the fuse portion may be arranged face-to-face with the conductor portion.

[0028] According to one embodiment, the step of turning on the parallel regulator can be achieved by the turned-on parallel regulator outputting current based on the changing input signal, and the step of outputting the cut-off control signal can be achieved by the switching unit using the current output from the parallel regulator to output the cut-off control signal.

[0029] According to one embodiment, the conductor portion may be formed between a first object and a second object, at least one of the first object and the second object being a battery cell, a battery module, or a battery pack unit.

[0030] According to one embodiment, in the event of thermal runaway of a battery connected to the conductor portion, the trigger portion determines the thermal runaway state of the battery based on the temperature of the conductor portion, and the cut-off portion cuts off the electrical connection of the conductor portion, thereby preventing damage to the system connected to the battery.

[0031] Invention Effects According to one embodiment of the present disclosure, the power-off system includes a fuse that triggers a circuit-breaking operation based on temperature and a parallel voltage regulator that uses a changing voltage as a control signal to perform an external circuit-breaking operation, thereby having the effect of cutting off the system when an abnormal temperature is detected, even without the control of a battery management system (BMS).

[0032] In addition, according to one embodiment of this disclosure, by utilizing a parallel voltage regulator that is less affected by ambient temperature and can operate precisely, even in abnormally high temperature conditions such as thermal runaway where the battery management system (BMS) cannot function properly, it can independently and accurately determine changes in the input signal and disconnect the system connection, thereby preventing excessive damage to the system.

[0033] Furthermore, according to one embodiment of this disclosure, in the case of thermal runaway of a battery connected to a conductor, the thermal runaway state of the battery is determined based on the temperature of the conductor, and the electrical connection of the conductor is cut off, thereby preventing damage to the system connected to the battery. Attached Figure Description

[0034] Figure 1 A block diagram illustrating the abnormal temperature detection unit constituting a power failure system according to an embodiment is provided.

[0035] Figure 2 A diagram illustrating the circuit configuration of a power-off system according to one embodiment is provided.

[0036] Figure 3 A diagram illustrating the shape of a power-off system according to one embodiment.

[0037] Figure 4A diagram is provided to briefly illustrate the shape in which a power-off system according to one embodiment is configured to connect objects.

[0038] Figure 5 A diagram is provided for illustrative purposes, showing the external circuitry configuration of a power-off system according to one embodiment.

[0039] Figure 6 A flowchart illustrating the operation process of a power outage system cutting off power according to an embodiment of the present invention is provided. Detailed Implementation

[0040] The present disclosure will now be described in detail with reference to the accompanying drawings. However, these are merely exemplary, and the present disclosure is not limited to the specific embodiments described herein.

[0041] Although terms such as "first" and "second" are used to describe various elements, components, and / or parts, these elements, components, and / or parts are not limited by these terms. These terms are only used to distinguish one element, component, or part from other elements, components, or parts. Therefore, within the technical concept of this disclosure, the first element, first component, or first part mentioned below can also be a second element, second component, or second part.

[0042] The terminology used in this specification is for describing embodiments and is not intended to limit this disclosure. In this specification, the singular includes the plural unless otherwise specifically mentioned in the statements. The terms "comprises" and / or "made of" as used in this specification do not exclude the presence or addition of one or more other constituent elements, steps, operations, and / or components mentioned.

[0043] Unless otherwise defined, all terms used in this specification (including technical and scientific terms) shall have the meanings commonly understood by one of ordinary skill in the art to which this disclosure pertains. Furthermore, terms defined in commonly used dictionaries shall not be idealized or over-interpreted unless explicitly and specifically defined.

[0044] This disclosure describes a power-off method and system based on abnormal temperatures. More specifically, it describes a power-off system and its operation method in which, during battery charging or discharging, if an abnormally high temperature occurs, such as battery thermal runaway, the power transmission to external circuits used for power transmission is interrupted based on the voltage change caused by the operation of a fuse.

[0045] Related to this, Figure 1 To briefly illustrate the block diagram of the abnormal temperature detection unit constituting a power failure system according to an embodiment, Figure 2 A diagram illustrating the circuit configuration of a power-off system according to one embodiment is provided.

[0046] Reference Figure 1 The abnormal temperature detection unit 100 may include: a power supply unit 110 that supplies a predetermined power; a trigger unit 120 that cuts off a portion of the circuit if a preset temperature is exceeded; a parallel voltage regulator 130 that is turned on according to the input signal that changes due to the cut-off of the portion of the circuit; and a switch unit 140 that outputs a cut-off control signal (or a cut-off control signal) based on the operation of the parallel voltage regulator 130.

[0047] Among them, such as Figure 2 As shown, the switching unit 140 may include: an operation unit 141 that senses the operation of the parallel voltage regulator 130; and a switch 143 that outputs a cut-off control signal based on the operation of the sensing unit.

[0048] Moreover, reference Figure 2 The power-off system 200 may include an abnormal temperature detection unit 100 and a cut-off unit 150. Furthermore, the power-off system 200 may also include a conductor unit 20.

[0049] The cut-off section 150 can serve as an element that cuts off external circuits based on a cut-off section control signal output from the abnormal temperature detection section 100. The cut-off section control signal cut-off section 150 can be configured to include multiple cut-off sections, and the switch section 140 can be configured to output a cut-off section control signal to at least one of the connected multiple cut-off sections.

[0050] The cutting section 150 may be formed outside the abnormal temperature detection section 100. For example, the cutting section 150 may be formed in the conductor section 20.

[0051] The following is for reference Figure 1 and Figure 2 The composition and operation of the power failure system 200 are described in detail.

[0052] First, the power supply unit 110 can be configured to output a preset voltage value for the operation of the parallel voltage regulator unit 130.

[0053] The trigger unit 120 can be configured to input a specified voltage as an input signal through the control terminal 25 of the parallel voltage regulator 130 according to the temperature.

[0054] According to one embodiment, the trigger unit 120 may be configured to include a first resistor R1 and a second resistor R2 connected in series to control the input signal of the parallel voltage regulator 130. The first resistor R1 may be a voltage distribution resistor used to generate the input signal voltage value of the parallel voltage regulator 130. Furthermore, the second resistor R2 may form a fuse unit 210 together with the fuse F.

[0055] The output terminal 27 of the parallel voltage regulator 130 can be connected to one end of the operation unit 141, and the other end of the operation unit 141 can be connected to the positive (plus, +) terminal 21 of the power supply unit 110.

[0056] Switch 143 can be configured to either open the connected circuit to cut off power transmission or close the connected circuit to allow power transmission if a switch control signal is received from the operation unit 141.

[0057] At this time, the change in voltage or current caused by the operation of switch 143 (e.g., opening or closing) can be input to the cut-off section 150 as a control signal.

[0058] If the cutting-off section 150 receives a cutting-off section control signal from the operation section 140, it can disconnect the circuit (e.g., an external circuit) that includes the cutting-off section 150 to cut off power transmission. The cutting-off section 150 can be configured to cut off the external circuit of the power-off system 200, such as... Figure 2 As shown, at least a portion of the cut-off portion 150 may be formed on the conductor portion 20 formed on a part of the external circuit.

[0059] According to one embodiment, the preset voltage value output by the power supply unit 110 may include a low voltage (LV) for a vehicle (e.g., an electric vehicle) and at least one voltage value among 24V, 12V, 5V, and 3.3V obtained by processing thereon.

[0060] As described above, the power supply unit 110 can be configured to output a preset voltage to the abnormal temperature detection unit 100. In this case, the power source of the power supply unit 110 may be a vehicle battery or a generator.

[0061] More specifically, the power supply unit 110 may be composed of a battery or a generator to provide power to the abnormal temperature detection unit 100, or may be configured to provide power obtained from a battery or generator to the abnormal temperature detection unit 100.

[0062] At this time, the power supply unit 110 can also be powered by the battery management system (BMS).

[0063] However, it is not limited to this. The power supply unit 110 may be composed of an independent power source so as to supply power to the abnormal temperature detection unit 100 independently of the vehicle's battery or generator.

[0064] The positive terminal 21 of the power supply unit 110 can be connected to one end of the first resistor R1, the other end of the first resistor R1 can be connected to one end of the second resistor R2 (or one end of the fuse unit 210), the other end of the second resistor R2 can be connected to one end of the fuse F, and the other end of the fuse F (or the other end of the fuse unit 210) can be connected to the negative terminal 23 of the power supply unit 110.

[0065] The negative terminal 23 of the power supply unit 110 can be connected to ground.

[0066] The fuse F may be a thermal fuse configured to disconnect the circuit (or open the circuit) at a preset temperature. However, it is not limited to this; the fuse F may also include a thermostat that disconnects the circuit according to a preset temperature.

[0067] According to one embodiment, fuse F can be configured to disconnect the circuit above a specific temperature in the range of 105 degrees Celsius (°C) to 200 degrees Celsius (°C). More specifically, fuse F can be configured to disconnect the circuit above a specific temperature in the range of 105 degrees Celsius (°C) to 150 degrees Celsius (°C).

[0068] The parallel regulator 130 can be configured to have three terminals consisting of a control terminal 25, an output terminal 27, and an input terminal 29. The control terminal 25 of the parallel regulator 130 can be configured to be connected to the other end of the first resistor R1 (and one end of the second resistor R2) of the trigger unit 120, and to operate or not operate according to the output voltage of the trigger unit 120.

[0069] The input terminal 29 of the parallel voltage regulator 130 can be connected to the other end of the fuse section 210 and the negative terminal 23 of the power supply section 110.

[0070] The operating state of the parallel regulator 130 can represent the state in which the parallel regulator is turned on and outputs current through the output terminal 27 (e.g., the conducting state). Conversely, the non-operating state of the parallel regulator 130 can represent the state in which the parallel regulator is turned off and does not output current through the output terminal 27 (e.g., the non-conduction state).

[0071] The parallel voltage regulator 130 can be configured to operate when the input signal input through the control terminal 25 is above the reference value (reference voltage value) and is set with a reference value (reference voltage value) for operation. Conversely, the parallel voltage regulator 130 can be configured not to operate when the input signal input through the control terminal 25 does not reach the reference value (reference voltage value).

[0072] According to one embodiment, the parallel regulator 130 may be configured as at least one diode (or Zener diode) and / or at least one transistor. In this case, the parallel regulator 130 may be provided in the form of an integrated circuit (IC) or a module.

[0073] The configuration of the trigger unit 120 for the operation of the parallel voltage regulator 130 will be described in more detail. The resistance values ​​of the first resistor R1 and the second resistor R2 can be designed and configured as follows: when the fuse F is closed, a voltage that is below the reference value for the operation of the parallel voltage regulator 130 is input through the control terminal 25; when the fuse F is open, a voltage above the reference value for the operation of the parallel voltage regulator 130 is input through the control terminal 25.

[0074] In this state, when the fuse F melts above a preset specific temperature and the circuit is broken, the trigger unit 120 can output a voltage above the reference value for the operation of the parallel voltage regulator 130 via the first resistor R1.

[0075] Therefore, the fuse section 210 can be configured to face the conductor section 20, which may generate abnormal temperatures.

[0076] In this state, the fuse section 210 can be configured to face the conductor section 20. For example, the fuse section 210 can be configured to be exposed from the abnormal temperature detection section 100 so that it faces the conductor section 20.

[0077] That is, when the temperature of the conductor section 20 rises to a certain temperature or above, if the fuse F blows, the voltage output through the first resistor R1 can be used as the input signal of the parallel voltage regulator 130 and input to the control terminal 25 while the fuse section 210 is open.

[0078] At this time, with the fuse F blown, the trigger unit 120 can output a voltage above the reference value for operation of the parallel voltage regulator.

[0079] When the voltage (input signal) input to control terminal 25 is above a reference value, the parallel regulator 130 can be turned on according to the changing input signal to output current through output terminal 27. The switching unit 140 can operate based on the current output from the parallel regulator 130 and output a cut-off control signal to the cut-off unit 150.

[0080] Therefore, the operation section 141 of the switching section 140 may be configured to include at least one relay or coupler. More specifically, the operation section 141 may be configured to include a relay or coupler that operates based on induced electromotive force and / or light. For example, the operation section 141 may be configured to include at least one switching element selected from electrical relays, electrical couplers, optical relays, or optical couplers.

[0081] More specifically, the operation unit 141 may be configured to include an input side and an output side, wherein the input side generates an induced electromotive force and / or optical output based on the output current of the parallel regulator 130, and the output side generates a cut-off control signal based on the induced electromotive force and / or optical output of the input side.

[0082] The switch 143 can cut off the power transmission of the circuit connected to the switch 143 based on the switch control signal output from the operation unit 141. The switch 143 may be constructed inside the abnormal temperature detection unit 100, or exposed and constructed outside the abnormal temperature detection unit 100, or constructed in the conductor section 20, and may be configured to receive the switch control signal from the operation unit 141 to cut off or allow the power transmission of the circuit connected to the switch 141.

[0083] More specifically, switch 143 is connected in series with cut-off section 150, and cuts off or allows power transmission in the circuit connected to switch 143 based on switch control signal received from operation section 141, thereby outputting the resulting current change and / or voltage change as cut-off section control signal of cut-off section 150.

[0084] According to one embodiment, switch 143 may be configured as at least one of a fuse, a switch, or a circuit breaker. When switch 143 is configured as a fuse, it may also be configured as a smart fuse that disconnects according to a cut-off control signal.

[0085] As described above, the cut-off section 150 can be connected in series with the switch 143 of the switch section 140 of the abnormal temperature detection section 100.

[0086] The cutting-off section 150 can cut off the power transmission of the conductor section 20 based on the cutting-off section control signal output from the switch section 140. The cutting-off section 150 may be constructed inside the abnormal temperature detection section 100, or exposed and constructed outside the abnormal temperature detection section 100, or constructed in the conductor section 20, and may be configured to receive the cutting-off section control signal from the switch section 140 to cut off the power transmission of the conductor section 20.

[0087] More specifically, the cut-off section 150 may be configured between one end and the other end of the conductor section 20, or configured to connect one end and the other end of the conductor section 20, and may be configured to cut off the power transmission between one end and the other end of the conductor section 20 based on the cut-off section control signal received from the switch section 140.

[0088] According to one embodiment, the cutting-off section 150 may be configured as at least one of a fuse, a switch, or a circuit breaker. When the cutting-off section 150 is configured as a fuse, it may also be configured as a smart fuse that disconnects according to a cutting-off section control signal.

[0089] That is, as described above, the cut-off section 150 is a component of the power-off system 200 and can be configured to cut off the power transmission of the external circuit constituting the conductor section 20.

[0090] Therefore, the abnormal temperature detection unit 100 can be configured to be integrated with the conductor portion 20, or it can be configured to be integrated with the conductor portion 20. Relatedly, Figure 3 A diagram illustrating the shape of a power-off system according to one embodiment.

[0091] refer to Figure 3 The abnormal temperature detection unit 100 can be configured to be attached to the conductor section 20 or inserted into the conductor section. For example, the abnormal temperature detection unit 100 can be configured as a module that can be attached to and detached from the conductor section 20 (or the cutting section 150).

[0092] Furthermore, although it did not pass Figure 2 As shown, however, the cut-off section 150 may also be configured to include at least one relay or coupler. In this case, at least one relay or coupler may be configured between the switch 143 and the cut-off section 150. The relay or coupler configured in the cut-off section 150 may be configured to operate the cut-off section 150 based on the cut-off section control signal of the switch 143.

[0093] refer to Figure 4 and Figure 5 The conductor portion 20 can be configured to connect the first object and the second object. Relatedly, Figure 4 This diagram illustrates, for the sake of brevity, the shape in which a power-off system according to one embodiment is configured to connect objects. Furthermore, Figure 5A diagram is provided for illustrative purposes, showing the external circuitry configuration of a power-off system according to one embodiment.

[0094] More specifically, the conductor portion 20 may be configured to have a shape that connects components to components. The conductor portion 20 may be composed of conductors that connect at least a portion of the battery cell, battery module, battery pack, the battery to other elements (e.g., the drive unit, lighting unit, etc. of a vehicle), or between elements.

[0095] For example, conductor portion 20 may be configured to connect battery module 410, which includes multiple battery modules 510, 530, to battery module 430, which includes multiple battery modules. However, it is not limited to this. As shown in conductor portion 50, it may also be configured to connect battery module 410 and other elements connected to battery module 410 (e.g., a vehicle), and / or to connect multiple battery modules (e.g., battery module 510 and battery module 530).

[0096] According to various embodiments, the external circuit 500 may be configured to include multiple power-off systems 200, 550. In this case, the external circuit may be configured such that multiple conductor portions connect objects.

[0097] For example, the conductor section 50 may also be configured as a power-off system 550 together with the abnormal temperature detection section 551 and the cut-off section 553, just like the power-off system 200 described above.

[0098] At this time, the abnormal temperature detection unit 551, the cutting unit 553 and the conductor unit 50 of the power-off system 550 are configured in the same or similar manner as the abnormal temperature detection unit 100, the cutting unit 150 and the conductor unit 20 of the power-off system 220, and therefore will not be described in detail.

[0099] According to various embodiments, the conductor portions 20 and 50 can be configured as having a bus bar or cable, or can be composed of modules.

[0100] At this time, the cutting sections 150 and 553 can be configured as part of the conductor sections 20 and 50 as described above, or can be disposed on the conductor sections 20 and 50. Based on this, the cutting sections 150 and 553 can be configured to cut off the power transmission between one end and the other end of the conductor sections 20 and 50 according to the cutting section control signal of the switch section.

[0101] For this purpose, holes can be formed at both ends of the conductor portions 20 and 50 so that the conductor portions 20 and 50 can be fixed to the object by at least one of the pins, screws, and clips.

[0102] Back to Figure 2The abnormal temperature detection unit 100 may also include a third resistor R3 and a Zener diode ZD connected in series to prevent damage to surrounding circuits caused by surge current generated when the relay or coupler of the operation unit 141 is turned off. The third resistor R3 and Zener diode ZD connected in series may be connected in parallel with the operation unit 141.

[0103] More specifically, one end of the third resistor R3 can be connected to the other end of the operating unit 141, and the other end of the third resistor R3 can be connected to one end of the Zener diode ZD. The other end of the Zener diode ZD can be connected to the output terminal 27 of the parallel regulator 130 and the one end of the operating unit 141.

[0104] Furthermore, the abnormal temperature detection unit 100 may also include a fourth resistor R4, which controls the magnitude of the current flowing through the parallel voltage regulator 130. More specifically, one end of the fourth resistor R4 may be connected to the other end of the operation unit 141, and the other end of the fourth resistor R4 may be connected to one end of the third resistor R3 and the positive terminal 21 of the power supply unit 110.

[0105] Furthermore, the abnormal temperature detection unit 100 may also include a capacitor C, which is used to prevent the parallel voltage regulator 130 from malfunctioning due to noise caused by changes in the voltage input to the control terminal 25 of the parallel voltage regulator 130. More specifically, the capacitor C may be connected between the control terminal 25 of the parallel voltage regulator 130 and ground (or the negative terminal 23 of the power supply unit 110).

[0106] Capacitor C can provide a delay time to reduce the rate of voltage change when the voltage input to the control terminal 25 of the parallel regulator 130 changes due to the tripping of fuse F, so that the instantaneous change can be ignored, thereby controlling the response speed.

[0107] Furthermore, although not shown in the accompanying drawings, the abnormal temperature detection unit 100 may include at least one communication unit. For example, the communication unit may include at least one communication module selected from wired communication (e.g., LAN (local area network), power line, CAN (controller area network), SPI (serial peripheral interface)) and wireless communication (e.g., Bluetooth, BLE (Bluetooth Low Energy), WiFi, WiFi Direct, IrDA (infrared data association), ZigBee, UWB, RF (radio frequency)).

[0108] At this time, the abnormal temperature detection unit 100 can be configured to send a preset message to a preset device (e.g., user equipment or server) via the communication unit if it senses current flowing through the output terminal 27 of the parallel voltage regulator 130. For this purpose, the abnormal temperature detection unit 100 may include a storage unit (not shown) containing user equipment information or server information, as well as messages related to system shutdown.

[0109] At this time, the storage unit may include inherent information of the abnormal temperature detection unit 100 or the power failure system 200, and the preset message may also include inherent information of the abnormal temperature detection unit 100 or the power failure system 200.

[0110] The power-off system according to various embodiments can be configured for a drive device that includes at least one power source.

[0111] For example, a drive unit can be a battery-powered vehicle, such as a gasoline-powered car, an electric car, or a hybrid car. However, a drive unit is not limited to vehicles; it can also include aircraft or ships, as well as all kinds of mechanical devices powered by batteries or internal combustion engines.

[0112] The power-off system according to various embodiments can be applied not only to drive devices, but also to battery packs, battery modules or battery systems of energy storage systems, and is not limited thereto. It can also be applied to any type of device that uses batteries and between components.

[0113] Based on the power-off system 200 constructed as described above, a power-off method based on abnormal temperature can be described. Relatedly, Figure 6 A flowchart illustrating the operation process of a power outage system cutting off power according to an embodiment of the present invention is provided.

[0114] In description Figure 6 At that time, the detailed operations performed in each step are configured to be consistent with those performed through... Figures 1 to 5 The operations described are performed in the same or similar manner, so repeated descriptions related to this can be omitted.

[0115] The power supply unit 100 can provide preset power to the components of the power failure system 200 so that the components of the power failure system 200 can operate.

[0116] First, in step 601, if a preset temperature is exceeded, the trigger unit 120 may disconnect a portion of the circuit. More specifically, the trigger unit 120 may be configured to include at least one fuse unit 210.

[0117] The fuse section 210 can be configured to face the conductor section 20. When the temperature of the conductor section 20 exceeds the preset temperature, the circuit connected to the fuse section 210 can be cut off (or disconnected) so that a voltage corresponding to the input signal can flow into the control terminal 25 of the parallel voltage regulator 130.

[0118] When the fuse section 210 cuts off the circuit, an input signal above the reference voltage value for the operation of the parallel voltage regulator 130 can be applied to the input terminal 25 of the parallel voltage regulator 130.

[0119] In step 603, the parallel regulator 130 can be turned on (operated) according to the input signal that changes due to the disconnection of a part of the circuit, and output current through the output terminal 27.

[0120] In step 605, the switching unit 140 can operate based on the current output through the output terminal 27 of the parallel voltage regulator 130 and output a cutting-off control signal to the cutting-off unit 150.

[0121] In the case where the operation section 141 of the switch section 140 is composed of an input side and an output side, the input side operates based on the current output through the output terminal 27 of the parallel regulator 130, and the output side responds accordingly to operate, thereby outputting a switch control signal from the output side.

[0122] Then, switch 143 can cut off or allow power transmission in the circuit connected to switch 143 based on the switch control signal. At this time, the voltage or current change generated based on the operation of switch 143 can be used as a cut-off control signal to control the operation of cut-off section 150.

[0123] In step 607, the cutting section 150 can cut off the power transmission between one end of the conductor and the other end based on the cutting section control signal. At this time, if the cutting section 150 is configured to include at least one relay or coupler, the relay or coupler can operate the cutting section 150 in response to the cutting section control signal.

[0124] As described above, the power-off system according to various embodiments includes a fuse that triggers a circuit-breaking operation based on temperature, and a parallel voltage regulator that uses a changing voltage as a control signal to perform an external circuit-breaking operation, thereby having the effect of cutting off the system when an abnormal temperature is detected, even without the control of a battery management system (BMS).

[0125] Furthermore, the power-off system according to various embodiments utilizes a parallel voltage regulator that is less affected by ambient temperature and can operate precisely. Even in abnormally high temperatures where the battery management system (BMS) cannot function properly, it can independently and accurately determine changes in the input signal and disconnect the system connection, thereby preventing excessive damage to the system.

[0126] Furthermore, according to various embodiments, when the battery in the conductor section is in a state of thermal runaway, the power-off system determines the thermal runaway state of the battery based on the temperature of the conductor section and cuts off the electrical connection of the conductor section, thereby preventing damage to the system connected to the battery.

[0127] The above description is merely an example of applying the principles of this disclosure, and other structures may be included without departing from the scope of this invention.

Claims

1. A power outage system, comprising: The trigger unit cuts off a portion of the circuit if the temperature exceeds a preset limit. A parallel voltage regulator that turns on according to the input signal that changes due to the disconnection of the aforementioned part of the circuit; A switching section, which outputs a cutting-off control signal to at least one cutting-off section based on the operation of the parallel voltage regulator; and A cutting section is formed between one end and the other end of the conductor section, and a control signal of the cutting section is used to cut off the power transmission between the one end and the other end.

2. The power-off system according to claim 1, wherein, Also includes: The abnormal temperature detection unit includes the trigger unit, the parallel voltage regulator, and the switching unit; moreover, The cutting section is configured to be detachable from the abnormal temperature detection section.

3. The power-off system according to claim 2, wherein, The switching unit comprises an operating unit and a switch, wherein the operating unit includes an input side that generates an induced electromotive force or light based on the output of the parallel voltage regulator and an output side that outputs a switch control signal based on the induced electromotive force or light. The switch cuts off or allows power transmission to the circuit connected to it based on the switch control signal.

4. The power-off system according to claims 1 to 3, wherein, The preset temperature is a specific temperature within the range of 105 degrees Celsius (°C) to 200 degrees Celsius (°C).

5. The power-off system according to claims 1 to 3, wherein, Also includes: The power supply section supplies predetermined power to at least a portion of the trigger section, the parallel voltage regulator, and the switching section; moreover, The triggering unit includes: A first resistor, one end of which is connected to the positive terminal of the power supply; and The fuse section has one end connected to the other end of the first resistor and the other end connected to the negative terminal of the power supply section.

6. The power-off system according to claim 5, wherein, The fuse section and the conductor section are arranged face to face.

7. The power-off system according to claim 5, wherein, The fuse unit includes: The second resistor has one end connected to the other end of the first resistor; and A thermal fuse, one end of which is connected to the other end of the second resistor, and the other end of which is connected to the negative terminal.

8. The power-off system according to claims 1 to 3, wherein, The conducting parallel voltage regulator outputs current based on the changing input signal. The switching section is configured to operate using the current output from the parallel voltage regulator.

9. The power-off system according to claims 1 to 3, wherein, Also includes: The fourth resistor controls the magnitude of the current flowing through the parallel voltage regulator.

10. The power-off system according to claim 5, wherein, The input signal is input to the control terminal of the parallel voltage regulator, and, The power-off system further includes a capacitor connected between the control terminal and the negative terminal to prevent malfunction of the parallel voltage regulator caused by noise generated when the voltage input to the control terminal changes.

11. The power-off system according to claims 1 to 3, wherein, The conductor portion is formed between the first object and the second object. At least one of the first object and the second object is a battery cell, a battery module, or a battery pack unit, or a vehicle.

12. The power-off system according to claims 1 to 3, configured as follows: In the event of thermal runaway of the battery connected to the conductor, the triggering unit determines the thermal runaway state of the battery based on the temperature of the conductor, and the cutting unit cuts off the electrical connection of the conductor, thereby preventing damage to the system connected to the battery.

13. A power-off method, comprising: If the preset temperature is exceeded, the trigger unit will cut off part of the circuit. The step of turning on the parallel regulator based on the input signal that changes due to the disconnection of the aforementioned part of the circuit; The step of the switching unit outputting a cutting-off control signal to at least one cutting-off unit based on the operation of the parallel voltage regulator; and The step of cutting off the power transmission between one end and the other end of the conductor portion based on the cut-off portion control signal, wherein at least one cutting portion is formed between one end and the other end of the conductor portion.

14. The power-off method according to claim 13, wherein, The abnormal temperature detection unit, including the trigger unit, the parallel voltage regulator, and the switch unit, is configured to be detachable from the cut-off unit or the conductor unit.

15. The power-off method according to claim 14, wherein, The step of the output cut-off control signal generates an induced electromotive force or light based on the output of the parallel voltage regulator, outputs the switch control signal based on the induced electromotive force or light, and cuts off or allows power transmission to the circuit connected to the switch based on the switch control signal.

16. The power-off method according to claims 13 to 15, wherein, The step of cutting off power transmission involves cutting off the power transmission between one end of the conductor and the other end by means of a fuse, switch, or circuit breaker included in the cutting section.

17. The power-off method according to claims 13 to 15, wherein, The preset temperature is a specific temperature within the range of 105 degrees Celsius (°C) to 200 degrees Celsius (°C).

18. The power-off method according to claims 13 to 15, wherein, The step of cutting off a portion of the circuit involves the fuse portion included in the trigger portion sensing a temperature exceeding the preset temperature of the conductor portion and cutting off the portion of the circuit.

19. The power-off method according to claims 13 to 15, wherein, The conductor portion is formed between the first object and the second object. At least one of the first object and the second object is a battery cell, a battery module, or a battery pack unit, or a vehicle.

20. The power-off method according to claims 13 to 15, wherein, In the event of thermal runaway of the battery connected to the conductor, the triggering unit determines the thermal runaway state of the battery based on the temperature of the conductor, and the cutting unit cuts off the electrical connection of the conductor, thereby preventing damage to the system connected to the battery.

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