A thermal runaway monitoring device, a thermal runaway monitoring method of a power battery in a dormant state, and a vehicle

Abstract

The application relates to a thermal runaway monitoring device, a thermal runaway monitoring method of a power battery in a dormant state and a vehicle, relates to the technical field of batteries, and is used for monitoring the thermal runaway of the power battery in the dormant state, has low cost and high reliability. The thermal runaway monitoring device is used for monitoring the power battery in the dormant state and comprises a protocol box, a controller mainboard, an alarm and a storage battery. The protocol box is configured to be connected with the power battery, is used for reading the temperature and voltage information in the power battery, generates and outputs a data signal containing the temperature and voltage information, the controller mainboard is connected with the protocol box, is used for receiving the data signal transmitted by the protocol box, analyzes and judges the data signal, and outputs a control signal when the data signal is abnormal, the alarm is connected with the controller mainboard, is used for receiving the control signal, and alarms in response to the control signal, and the storage battery is connected with the controller mainboard and is also configured to be connected with the power battery, and is used for supplying power for the power battery and the controller mainboard.

Description

Technical Field

[0001] This invention relates to the field of battery technology, specifically to a thermal runaway monitoring device, a method for monitoring thermal runaway of a power battery in a dormant state, and a vehicle. Background Technology

[0002] In recent years, with the continuous development of the automotive industry, new energy vehicles have become increasingly popular, but at the same time, the safety issues of new energy vehicles have become increasingly prominent.

[0003] The essence of safety accidents involving new energy vehicles is thermal runaway of the power battery. Thermal runaway of a power battery refers to the uncontrollable rise in temperature after reaching a certain point, resulting in a rapid increase in temperature. This can range from minor overheating and smoke to severe fire and explosion, with the fire spreading rapidly and difficult to control, seriously threatening the personal safety and property of users and surrounding residents. Several accidents involving fires and explosions in new energy vehicles due to thermal runaway of the power battery have already occurred, particularly the spontaneous combustion of new energy vehicles in their off-peak / dormant state, which has attracted widespread attention from all sectors of society.

[0004] Currently, vehicles are generally equipped with thermal runaway monitoring systems, but these systems can only monitor the thermal runaway of the battery when the vehicle is powered on. When the vehicle is not in use or is undergoing maintenance, or in a dormant state (power off), thermal runaway monitoring of the battery is generally not performed, or only external temperature measurements are taken using a thermometer, which is highly susceptible to ambient temperature fluctuations. Therefore, when the vehicle is powered off and in a dormant state, it is impossible to obtain information about the battery's thermal runaway status, leaving occupants both inside and outside the vehicle unaware of the battery's condition, potentially leading to unnecessary personal injury and property damage.

[0005] Therefore, for example, utility model patent CN217917627U discloses a thermal runaway detection system after power-off hibernation, including: a car key, a timer, a battery information acquisition unit (BIC), a vehicle controller (VCU), and a TSP platform. The car key is communicatively connected to the battery management system (BMS); the timer is also communicatively connected to the BMS, which includes a main control unit (BMU); the BIC is communicatively connected to the BMU; the VCU is also communicatively connected to the BMU; and the VCU is remotely connected to the TSP platform via a T-BOX. Adding a thermal runaway monitoring system to the vehicle's structure not only increases manufacturing costs but also limits monitoring to only the vehicle itself when it is powered off, making it impossible to monitor thermal runaway in other vehicles.

[0006] For example, invention patent CN113036250B provides a real-time monitoring system, method, and new energy vehicle for thermal runaway of power batteries, which can solve the problem that the battery management system cannot monitor thermal runaway when in a dormant state. The system includes: a data acquisition device and a battery management system connected to it; the data acquisition device is used to: periodically wake up the battery management system after it enters a dormant state; and after waking up, to collect real-time temperature and voltage data for each individual cell of the power battery; then, to compare the real-time temperature and voltage of each individual cell with their respective preset thresholds; if the real-time voltage of any individual cell is less than its corresponding preset voltage threshold, and / or if the real-time temperature of any individual cell is greater than its corresponding preset temperature threshold, then the battery management system is woken up; the battery management system is used to: monitor thermal runaway based on the temperature rise rate and voltage drop rate of each individual cell of the power battery after being woken up by the data acquisition device. Similarly, adding a thermal runaway monitoring system to the vehicle's structure not only increases manufacturing costs but also limits monitoring to only when the vehicle itself is powered off, making it impossible to monitor thermal runaway in other vehicles. Summary of the Invention

[0007] The purpose of this invention is to provide a thermal runaway monitoring device that can monitor thermal runaway of power batteries in a dormant state. It is low in cost, highly reliable, highly versatile, and compatible with most power batteries on the market.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: This disclosure provides a thermal runaway monitoring device for monitoring a power battery in a dormant state. The thermal runaway monitoring device includes a protocol box, a controller motherboard, an alarm, and a battery. The protocol box is configured to be connected to the power battery and is used to read the internal temperature and voltage information of the power battery, generate and output data signals containing the temperature and voltage information. The controller motherboard is connected to the protocol box and is used to receive the data signals transmitted by the protocol box, analyze and judge the data signals, and output a control signal when the data signals are abnormal. The alarm is connected to the controller motherboard and is used to receive the control signals output by the controller motherboard and respond to the control signals to issue an alarm. The battery is connected to the controller motherboard and is also configured to be connected to the power battery, and the battery is used to supply power to the power battery and the controller motherboard.

[0009] The beneficial effects of this invention are as follows: When the vehicle is powered off, the power battery is in a power-off dormant state. Connecting the thermal runaway monitoring device to the power battery activates the device, and the internal battery of the thermal runaway monitoring device supplies power to the power battery, thereby waking it up. This allows the thermal runaway monitoring device to perform thermal runaway monitoring on the power battery when the vehicle, such as a new energy vehicle, is in a power-off dormant state (i.e., the power battery is in a power-off dormant state), or when the power battery is disconnected from the vehicle's power supply during vehicle research and development, testing, and after-sales maintenance, where the temperature and voltage information of the power battery cannot be obtained from a single power battery. The thermal runaway monitoring device has many application scenarios and can fully utilize the power battery's own sensors to collect temperature, voltage, and other data without introducing other components into the power battery, saving costs and reducing manufacturing difficulty. At the same time, the thermal runaway monitoring device has its own power supply, making it convenient and portable, not limited by the space of the application site, and is low in cost, highly reliable, and highly versatile, compatible with most power batteries on the market.

[0010] In some embodiments, the controller motherboard is used to determine, based on the data signal, whether the temperature and voltage inside the power battery exceed the temperature threshold and voltage threshold, and if so, output a control signal.

[0011] In some embodiments, the thermal runaway monitoring device further includes a wiring harness connector; the wiring harness connector is configured to connect to a power battery, and the wiring harness connector is also connected to a protocol box and a storage battery.

[0012] In some embodiments, the wiring harness connector includes at least six pins, including a negative power supply pin, a positive power supply pin, a ground pin, a wake-up line pin, a low-level data line pin, and a high-level data line pin. The ground pin, wake-up line pin, low-level data line pin, and high-level data line pin are connected to the protocol box, and the negative power supply pin and the positive power supply pin are connected to the battery.

[0013] In some embodiments, the thermal runaway monitoring device further includes a connector for connecting the thermal runaway monitoring device to the power battery; the connector includes two plugs and a connecting harness, the two plugs being connected via the connecting harness; one plug has a pin number and type matching the pin number and type of the harness connector, the plug being used to plug into the harness connector, and the other plug is configured to plug into the power battery connector.

[0014] In some embodiments, the thermal runaway monitoring device further includes a power switch connected to the battery, which is used to control whether the battery supplies power to the power battery and the controller motherboard.

[0015] In some embodiments, the thermal runaway monitoring device further includes a start button connected between the wiring harness connector and the protocol box. The start button is used to control whether the protocol box reads the temperature and voltage information inside the power battery.

[0016] In some embodiments, the thermal runaway monitoring device further includes a charging interface connected to a battery, which is used to charge the battery.

[0017] In some embodiments, the thermal runaway monitoring device further includes a transmission interface connected to the controller motherboard, which is used to import logic control data to the controller motherboard.

[0018] In some embodiments, the thermal runaway monitoring device further includes a housing, inside which are disposed a protocol box, a battery, a controller motherboard and an alarm. The surface of the housing is provided with a wiring harness connector, a charging connector and a transmission connector, and a handle is also provided on the surface of the housing.

[0019] This disclosure provides a method for monitoring thermal runaway of a power battery in a dormant state, applied to the aforementioned thermal runaway monitoring device, comprising: S1, the thermal runaway monitoring device is connected to the power battery; S2, the thermal runaway monitoring device is activated; the battery supplies power to the power battery and the controller motherboard; S3, the protocol box reads the internal temperature and voltage information of the power battery, generates a data signal containing the temperature and voltage information, and transmits it to the controller motherboard; S4, the controller motherboard receives the data signal transmitted by the protocol box, analyzes the data signal, and determines whether the data signal is normal; S5, if yes, the controller motherboard does not output a signal, and the thermal runaway monitoring device continues to work; if no, the controller motherboard outputs a control signal to the alarm, and the alarm responds to the control signal to sound an alarm.

[0020] This disclosure provides a vehicle, including: a power battery and the thermal runaway monitoring device described above, wherein the power battery is connected to the thermal runaway monitoring device. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0022] Figure 1 A structural diagram of a thermal runaway monitoring device provided for some embodiments of this disclosure;

[0023] Figure 2 A structural diagram of another thermal runaway monitoring device provided in some embodiments of this disclosure;

[0024] Figure 3 A structural diagram of a wire harness connector provided for some embodiments of this disclosure;

[0025] Figure 4 A structural diagram of a thermal runaway monitoring device provided for some embodiments of this disclosure;

[0026] Figure 5 A flowchart illustrating a method for monitoring thermal runaway of a power battery in a dormant state, provided for some embodiments of this disclosure.

[0027] In the diagram, 1000—Thermal runaway monitoring device; 2000—Power battery; 10—Protocol box; 20—Controller motherboard; 30—Alarm; 40—Battery; 50—Wire harness connector; 60—Connector; 70—Power switch; 80—Start button; 90—Charging interface; 100—Transmission interface; 110—Housing; 1—Temperature and voltage information; 2—Data signal; 3—Control signal; 21—CAN interface; 22—Power supply interface; 23—IO control interface; 51—Pin; 511—Power supply negative pin; 512—Power supply positive pin; 513—Grounding pin; 514—Wake-up line pin; 515—Low-level data line pin; 516—High-level data line pin; 61—Connector; 62—Connecting wire harness. Detailed Implementation

[0028] The technical solutions in some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0029] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific feature, structure, material, or characteristic may be included in any suitable manner in any one or more embodiments or examples.

[0030] In describing some embodiments, the terms "coupled" and "connected," and their derivative expressions, may be used. The term "connected" should be interpreted broadly; for example, a "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection via an intermediate medium. The term "coupled," for example, indicates that two or more components have direct physical or electrical contact. The term "coupled" or "communicatively coupled" may also refer to two or more components that do not have direct contact with each other but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the content of this document.

[0031] This disclosure provides a thermal runaway monitoring device 1000 for monitoring a power battery 2000 in a dormant state, such as... Figure 1 As shown, the thermal runaway monitoring device 1000 includes a protocol box 10, a controller motherboard 20, an alarm 30, and a battery 40. The protocol box 10 is configured to connect to the power battery 2000. The protocol box 10 is used to read the temperature and voltage information 1 inside the power battery 2000, generate and output a data signal 2 containing the temperature and voltage information 1. The controller motherboard 20 is connected to the protocol box 10. The controller motherboard 20 is used to receive the data signal 2 transmitted by the protocol box 10, analyze and judge the data signal 2, and output a control signal 3 when the data signal 2 is abnormal. The alarm 30 is connected to the controller motherboard 20. The alarm 30 is used to receive the control signal 3 output by the controller motherboard 20 and respond to the control signal 3 to sound an alarm. The battery 40 is connected to the controller motherboard 20 and is also configured to connect to the power battery 2000. The battery 40 is used to supply power to the power battery 2000 and the controller motherboard 20.

[0032] For example, the protocol box 10, such as a CAN box, is a hardware device for vehicle network communication. The protocol box 10, such as the CAN box, can monitor, analyze and debug the vehicle's CAN network through the set software. The protocol box 10, such as the CAN box, is an important component for reading the temperature and voltage information 1 inside the power battery 2000 and generating and outputting a data signal 2 containing the temperature and voltage information 1.

[0033] For example, the storage battery 40 provides a voltage of, for example, 12V to the power battery 2000 and the controller motherboard 20 to wake up the power battery 2000 in a dormant state and to ensure that the thermal runaway monitoring device 1000 can operate normally.

[0034] For example, the controller motherboard 20 has software import and programming functions; it is used to receive the data signal 2 transmitted by the protocol box 10, analyze and judge the data signal 2, and output the control signal 3 when the data signal 2 is abnormal. It is the brain of the thermal runaway monitoring device 1000.

[0035] For example, when the alarm 30 receives the control signal 3 output by the controller motherboard 20, it emits an alarm sound to alert personnel.

[0036] For example, such as Figure 1 As shown, the controller motherboard 20 includes a CAN interface 21, a power supply interface 22, an IO control interface 23, and a protocol box 10, such as a CAN box connected to the CAN interface 21 of the controller motherboard 20; a battery 40 is connected to the power supply interface 22 of the controller motherboard 20; and an alarm 30 is connected to the IO control interface 23 of the controller motherboard 20.

[0037] For example, the software embedded in the controller motherboard 20 includes functions such as reading and analyzing data signal 2, data judgment and logic control, and IO control. Specifically, to avoid the impact of ambient temperature on the thermal runaway monitoring of the power battery 2000, the temperature judgment logic can be set with two temperature thresholds during software initialization. For example: 1. The temperature of the power battery 2000 is ≤56℃, that is, if the temperature signal of the power battery 2000 itself exceeds 56℃, the controller motherboard 20 outputs control signal 3 to the alarm 30. After receiving control signal 3, the alarm 30 sounds an alarm, prompting personnel to handle the situation or evacuate; 2. The temperature of the power battery 2000 rises ≤3℃ within, for example, 3 seconds. That is, the temperature signal detection of the power battery 2000 itself is performed in real time, for example, with a 5-second cycle, judging the temperature rise of the power battery 2000 within 3 seconds. If the temperature of the power battery 2000 rises more than 3℃ within 3 seconds, the controller motherboard 20 outputs control signal 3 to the alarm 30. After receiving control signal 3, the alarm 30 sounds an alarm, prompting personnel to handle the situation or evacuate.

[0038] For example, when initializing the software settings, the voltage judgment logic can also be set with a voltage threshold. For instance, if the voltage of the power battery 2000 is less than a certain voltage value, that is, if the voltage signal of the power battery 2000 itself exceeds the voltage value, the controller motherboard 20 will output a control signal 3 to the alarm 30. After receiving the control signal 3, the alarm 30 will sound an alarm to prompt personnel to take action or evacuate.

[0039] It is understandable that the temperature and voltage judgment logic settings in the software can be configured according to specific circumstances. The temperature and voltage judgment logic settings in the software described above are only for some embodiments. In other embodiments, three or four temperature thresholds can be set, and the number of temperature thresholds can be set according to actual conditions. Similarly, the specific data in the temperature thresholds can also be set according to actual conditions. For example, if the temperature of the power battery 2000 is <60℃, that is, if the temperature signal of the power battery 2000 itself exceeds 60℃, the controller motherboard 20 will output a control signal 3 to the alarm 30. After receiving the control signal 3, the alarm 30 will sound an alarm to prompt personnel to take action or evacuate; or if the temperature of the power battery 2000 rises by ≤5℃ within 10 seconds, the power battery 2000 itself detects its own temperature signal. For example, 10 seconds is a cycle, and the temperature rise of the power battery 2000 within 10 seconds is judged in real time. If the temperature of the power battery 2000 rises by more than 5℃ within 10 seconds, the controller motherboard 20 will output the control signal 3 to the alarm 30. After receiving the control signal 3, the alarm 30 will sound an alarm to prompt personnel to take action or evacuate. The voltage judgment logic is the same as the temperature judgment logic, and will not be described in detail here.

[0040] For example, the thermal runaway monitoring device 1000 provided in this disclosure can perform thermal runaway monitoring on the power battery 2000 when the vehicle, such as a new energy vehicle, is in a power-off sleep state, that is, the power battery 2000 is in a power-off sleep state, or when the power battery 2000 is disconnected from the vehicle power supply during vehicle research and development, testing and after-sales maintenance, etc., and the temperature and voltage information 1 of the power battery 2000 cannot be obtained by the single power battery 2000.

[0041] For example, the temperature and voltage information 1 inside the power battery 2000 is read in real time through the protocol box 10, such as the CAN box, generating a data signal 2 containing the temperature and voltage information 1, and transmitting the data signal 2 to the controller motherboard 20; the software embedded in the controller motherboard 20 sets the threshold values ​​for the temperature, voltage and other data of the power battery 2000, the controller motherboard 20 parses the data signal 2 and determines whether the temperature and voltage inside the power battery 2000 exceed the temperature threshold and voltage threshold. If the temperature and voltage inside the power battery 2000 do not exceed the temperature threshold and voltage threshold, the controller motherboard 20 continues to monitor. If the temperature and voltage inside the power battery 2000 exceed the temperature threshold and voltage threshold, the controller motherboard 20 outputs a control signal 3 to the alarm 30; the alarm 30 responds to the control signal 3 and sounds an alarm, reminding personnel to promptly initiate vehicle thermal runaway emergency response or evacuate in time. When the vehicle, such as a new energy vehicle, is in a power-off hibernation state, the thermal runaway monitoring device 1000 disclosed herein can also be used to monitor the thermal runaway of the power battery 2000, greatly ensuring the safety of personnel and property.

[0042] For example, when the vehicle is powered off, the power battery 2000 is in a power-off dormant state. Connecting the thermal runaway monitoring device 1000 to the power battery 2000 activates the device. The battery 40 inside the thermal runaway monitoring device 1000 supplies power to the power battery 2000, thereby waking it up. This allows the thermal runaway monitoring device 1000 to function in vehicles, such as new energy vehicles, when the vehicle is in a power-off dormant state (i.e., the power battery 2000 is in a power-off dormant state), or during vehicle research and development, testing, and after-sales maintenance when the power battery 2000 is disconnected from the vehicle's power supply. In cases where temperature and voltage information of the power battery 2000 cannot be obtained, thermal runaway monitoring is performed on the power battery 2000. The thermal runaway monitoring device 1000 has many applications and can make full use of the power battery 2000's own sensors to collect data such as temperature and voltage. There is no need to introduce other components into the power battery 2000, saving costs and reducing manufacturing difficulty. At the same time, the thermal runaway monitoring device 1000 has its own power supply, is convenient and portable, is not limited by the space of the application site, and is low in cost, highly reliable, and highly versatile, compatible with most power batteries 2000 on the market.

[0043] In some embodiments, such as Figure 2 As shown, the thermal runaway monitoring device 1000 also includes a wiring harness connector 50; the wiring harness connector 50 is configured to connect to the power battery 2000, and the wiring harness connector 50 is also connected to the protocol box 10 and the storage battery 40; as shown Figure 3As shown, the wiring harness connector 50 includes at least six pins 51, including a negative power supply pin 511, a positive power supply pin 512, a ground wire pin 513, a wake-up line pin 514, a low-level data line pin 515, and a high-level data line pin 516. The ground wire pin 513, the wake-up line pin 514, the low-level data line pin 515, and the high-level data line pin 516 are connected to the protocol box 10, and the negative power supply pin 511 and the positive power supply pin 512 are connected to the battery 40.

[0044] For example, in the thermal runaway monitoring device 1000, the protocol box 10 and the battery 40 are respectively connected to the wiring harness interface 50. The protocol box 10 is connected to the ground wire pin 513, wake-up wire pin 514, low data line pin 515 and high data line pin 516 of the wiring harness interface 50; the battery 40 is connected to the power negative pin 511 and power positive pin 512 of the wiring harness interface 50.

[0045] For example, the wiring harness connector 50 in the thermal runaway monitoring device 1000 may also include other pins. The type and number of pins 51 of the wiring harness connector 50 are not limited and can be adjusted according to the needs of different products.

[0046] For example, the thermal runaway monitoring device 1000 is connected to the power battery 2000 through the wiring harness connector 50. After the thermal runaway monitoring device 1000 is connected to the power battery 2000, the 12V voltage provided by the storage battery 40 is transmitted to the power battery 2000 through the pin 51 connected to the storage battery 40 to supply power to the power battery 2000. The temperature and voltage information 1 inside the power battery 2000 is transmitted to the protocol box 10 through the pin 51 connected to the protocol box 10. The protocol box 10 reads the temperature and voltage information 1 inside the power battery 2000 and generates and outputs a data signal 2 containing the temperature and voltage information 1.

[0047] In some embodiments, such as Figure 2 As shown, the thermal runaway monitoring device 1000 also includes a connector 60 for connecting the thermal runaway monitoring device 1000 to the power battery 2000; the connector 60 includes two connectors 61 and a connecting harness 62, the two connectors 61 are connected by the connecting harness 62; the number and type of pins of one connector 61 match the number and type of pins 51 of the harness connector 50, and the connector 61 is used to be plugged into the harness connector 50, and the other connector 61 is configured to be plugged into the connector of the power battery 2000.

[0048] For example, the 12V voltage provided by the storage battery 40 is transmitted to the power battery 2000 through the connector 60. The temperature and voltage information 1 inside the power battery 2000 is transmitted to the protocol box 10 through the connector 60. In order for one connector 61 of the connector 60 to be inserted into the wiring harness connector 50 and transmit data signal 2, the number and type of pins of the connector 61 match the number and type of pins 51 of the wiring harness connector. It is understood that the number and type of pins of the other connector 61 also need to match the number and type of pins of the interface of the power battery 2000. The number and type of pins of the interface of the power battery 2000 can be the same as the number and type of pins 51 of the wiring harness connector 50 of the thermal runaway monitoring device 1000, or they can be different. This disclosure does not limit this.

[0049] In some embodiments, such as Figure 4 As shown, and refer to Figure 2 The thermal runaway monitoring device 1000 also includes a power switch 70, which is connected to the battery 40 and is used to control whether the battery 40 supplies power to the power battery 2000 and the controller motherboard 20.

[0050] In some embodiments, such as Figure 4 As shown, and refer to Figure 2 The thermal runaway monitoring device 1000 also includes a start button 80, which is connected between the wiring harness connector 50 and the protocol box 10. The start button 80 is used to control whether the protocol box 10 reads the temperature and voltage information 1 inside the power battery 2000.

[0051] For example, when the power switch 70 is turned on, the battery 40 supplies power to the power battery 2000 and the controller motherboard 20. At this time, the thermal runaway monitoring device 1000 is powered on, and the power battery 2000 and the controller motherboard 20 are awakened. Both the power battery 2000 and the controller motherboard 20 are in working state. If the start button 80 is turned on at this time, the temperature and voltage information 1 inside the power battery 2000 is transmitted to the protocol box 10, and the protocol box 10 reads the temperature and voltage information 1 inside the power battery 2000.

[0052] For example, by configuring a power switch 70 and a start button 80, the start button 80 can be turned off when it is necessary to briefly stop the thermal runaway monitoring of the power battery 2000. This prevents the protocol box 10 from reading the internal temperature and voltage information 1 of the power battery 2000. However, at this time, the thermal runaway monitoring device 1000 is powered on, and both the power battery 2000 and the controller motherboard 20 are in working condition. When the start button 80 is turned on, the thermal runaway monitoring device 1000 can immediately perform thermal runaway monitoring of the power battery 2000 without waiting for the thermal runaway monitoring device 1000 to start, thus saving the startup time of the thermal runaway monitoring device 1000. Furthermore, this reduces the risk of the thermal runaway monitoring device 1000 being damaged by current breakdown due to frequent power-on and power-off cycles caused by frequent turning of the power switch 70.

[0053] In some embodiments, such as Figure 2 As shown, the thermal runaway monitoring device 1000 also includes a charging interface 90, which is connected to the battery 40. An external power source is connected to the charging interface 90 to charge the battery 40. This enables the thermal runaway monitoring device 1000 to store electrical energy, eliminating the need for frequent battery replacements and improving the convenience and portability of the thermal runaway monitoring device 1000.

[0054] In some embodiments, such as Figure 2 As shown, the thermal runaway monitoring device 1000 also includes a transmission interface 100, which is connected to the controller motherboard 20. The transmission interface 100 is used to import logic control data into the controller motherboard 20.

[0055] For example, such as Figure 2 As shown, the controller motherboard 20 also includes a motherboard transmission interface 24. The transmission interface 100 of the thermal runaway monitoring device 1000 is connected to the motherboard transmission interface 24. The device is connected to an external computer through the transmission interface 100, thereby importing software into the controller motherboard 20 and realizing the function of the controller motherboard 20 in analyzing and judging data signals 2.

[0056] In some embodiments, such as Figure 4 As shown, and refer to Figure 2 The thermal runaway monitoring device 1000 also includes a housing 110, which houses a protocol box 10, a battery 40, a controller motherboard 20, and an alarm 30. The surface of the housing 110 is provided with a wire harness connector 50, a charging connector 90, and a transmission connector 100. The surface of the housing 110 is also provided with a handle.

[0057] For example, the housing 110 of the thermal runaway monitoring device 1000 can be a cuboid, with a length, width, and height of 350mm, 250mm, and 85mm, respectively, making it a portable "black box" and increasing the portability of the thermal runaway monitoring device 1000. A power switch 70 and a start button 80 are located on the housing 110 of the thermal runaway monitoring device 1000.

[0058] This disclosure provides a method for monitoring thermal runaway of a power battery 2000 in a dormant state, applied to the thermal runaway monitoring device 1000 described above, such as... Figure 5 As shown, and refer to Figure 1 The process includes: S1, the thermal runaway monitoring device 1000 is connected to the power battery 2000; S2, the thermal runaway monitoring device 1000 is activated; the battery 40 supplies power to the power battery 2000 and the controller motherboard 20; S3, the protocol box 10 reads the temperature and voltage information 1 inside the power battery 2000, generates a data signal 2 containing the temperature and voltage information 1, and transmits it to the controller motherboard 20.

[0059] S4. The controller motherboard 20 receives the data signal 2 transmitted by the protocol box 10 and analyzes the data signal 2 to determine whether the data signal 2 is normal. S5. If yes, the controller motherboard 20 does not output a signal, and the thermal runaway monitoring device 1000 continues to work. If no, the controller motherboard 20 outputs a control signal 3 to the alarm 30, and the alarm 30 responds to the control signal 3 to sound an alarm.

[0060] For example, before the thermal runaway monitoring device 1000 is connected to the power battery 2000 in S1, the thermal runaway monitoring method of the power battery 2000 in the dormant state further includes: S0, initializing the thermal runaway monitoring device 1000, connecting the transmission interface 100 of the thermal runaway monitoring device 1000 to an external computer, opening the software inside the controller motherboard 20, importing the DBC protocol of the power battery 2000 into the software, and setting alarm thresholds for information such as temperature and voltage in the software; setting the software to start automatically, that is, the software runs automatically after the thermal runaway monitoring device 1000 is powered on.

[0061] For example, S1, the connection between the thermal runaway monitoring device 1000 and the power battery 2000 includes: inserting the two connectors 61 of the connector 60 into the wiring harness connector 50 of the thermal runaway monitoring device 1000 and the connector of the power battery 2000 respectively, thereby connecting the thermal runaway monitoring device 1000 and the power battery 2000.

[0062] For example, S2, the thermal runaway monitoring device 1000 is started; the battery 40 supplies power to the power battery 2000 and the controller motherboard 20, including: turning on the power switch 70 of the thermal runaway monitoring device 1000, the battery 40 providing 12V voltage to the power battery 2000, waking up the power battery 2000; at the same time, the battery 40 providing 12V voltage to the controller motherboard 20, waking up the controller motherboard 20 in the thermal runaway monitoring device 1000, and the software in the controller motherboard 20 starting to run.

[0063] For example, S3, the protocol box 10 reads the temperature and voltage information 1 inside the power battery 2000, generates a data signal 2 containing the temperature and voltage information 1, and transmits it to the controller motherboard 20, including: turning on the start button 80 of the thermal runaway monitoring device 1000, the temperature and voltage information 1 of the power battery 2000 being input into the protocol box 10 through the connector 60, the protocol box 10 reading the temperature and voltage information 1 inside the power battery 2000, generating a data signal 2 containing the temperature and voltage information 1, and transmitting it to the controller motherboard 20.

[0064] This disclosure provides a vehicle including a power battery 2000 and the thermal runaway monitoring device 1000 described above, wherein the power battery 2000 is connected to the thermal runaway monitoring device 1000.

[0065] For example, the thermal runaway monitoring device 1000 can monitor the thermal runaway of a vehicle, such as a new energy vehicle, when it is in a power-off sleep state, i.e., when the power battery 2000 is in a power-off sleep state. It can make full use of the power battery 2000's own sensors to collect data such as temperature and voltage, without the need to introduce other components into the power battery 2000, thus saving costs and reducing manufacturing difficulty. At the same time, the thermal runaway monitoring device 1000 has its own power supply, is convenient and portable, is not limited by the space of the application site, and is low in cost, highly reliable, highly versatile, and compatible with most power batteries 2000 on the market.

[0066] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0067] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A thermal runaway monitoring device, characterized in that, For monitoring the power battery (2000) in dormant state, including: Protocol box (10), the protocol box (10) is configured to connect to the power battery (2000), the protocol box (10) is used to read the temperature and voltage information (1) inside the power battery (2000), and generate and output a data signal (2) containing the temperature and voltage information (1); The controller motherboard (20) is connected to the protocol box (10). The controller motherboard (20) is used to receive the data signal (2) transmitted by the protocol box (10), analyze and judge the data signal (2), and output a control signal (3) when the data signal (2) is abnormal. An alarm (30) is connected to the mainboard (20) of the controller. The alarm (30) is used to receive the control signal (3) output by the mainboard (20) of the controller and to trigger an alarm in response to the control signal (3). A storage battery (40) connected to the controller motherboard (20), the storage battery (40) is also configured to be connected to the power battery (2000), the storage battery (40) is used to supply power to the power battery (2000) and the controller motherboard (20); A wiring harness connector (50) is configured to connect to the power battery (2000) and is also connected to the protocol box (10) and the storage battery (40). The wiring harness connector (50) includes at least six pins (51), including a power negative pin (511), a power positive pin (512), a ground pin (513), a wake-up pin (514), a low-level data line pin (515), and a high-level data line pin (516). The ground pin (513), the wake-up pin (514), the low-level data line pin (515), and the high-level data line pin (516) are connected to the protocol box (10), and the power negative pin (511) and the power positive pin (512) are connected to the storage battery (40).

2. The thermal runaway monitoring device according to claim 1, characterized in that, The controller motherboard (20) is used to determine whether the temperature and voltage inside the power battery (2000) exceed the temperature threshold and voltage threshold according to the data signal (2). If so, the controller outputs the control signal (3).

3. The thermal runaway monitoring device according to claim 1, characterized in that, The thermal runaway monitoring device (1000) further includes a connector (60) for connecting the thermal runaway monitoring device (1000) and the power battery (2000); the connector (60) includes two plugs (61) and a connecting harness (62), the two plugs (61) being connected through the connecting harness (62); the number and type of pins of one of the plugs (61) matches the number and type of pins (51) of the harness connector (50), the plug (61) being used to plug into the harness connector (50), and the other plug (61) being configured to plug into the connector of the power battery (2000).

4. The thermal runaway monitoring device according to claim 1, characterized in that, The thermal runaway monitoring device (1000) also includes a power switch (70), which is connected to the storage battery (40). The power switch (70) is used to control whether the storage battery (40) supplies power to the power battery (2000) and the controller motherboard (20).

5. The thermal runaway monitoring device according to claim 4, characterized in that, The thermal runaway monitoring device (1000) also includes a start button (80), which is connected between the wiring harness connector (50) and the protocol box (10). The start button (80) is used to control whether the protocol box (10) reads the temperature and voltage information (1) inside the power battery (2000).

6. The thermal runaway monitoring device according to claim 1, characterized in that, The thermal runaway monitoring device (1000) also includes a charging interface (90), which is connected to the battery (40) and is used to charge the battery (40).

7. The thermal runaway monitoring device according to claim 1, characterized in that, The thermal runaway monitoring device (1000) also includes a transmission interface (100), which is connected to the controller motherboard (20). The transmission interface (100) is used to import logic control data into the controller motherboard (20).

8. The thermal runaway monitoring device according to any one of claims 1 to 7, characterized in that, The thermal runaway monitoring device (1000) also includes a housing (110), in which the protocol box (10), the battery (40), the controller motherboard (20) and the alarm (30) are disposed. The surface of the housing (110) is provided with a wire harness plug interface (50), a charging interface (90) and a transmission interface (100). The surface of the housing (110) is also provided with a handle.

9. A method for monitoring thermal runaway of a power battery in a dormant state, applied to the thermal runaway monitoring device (1000) as described in any one of claims 1 to 8, characterized in that, include: The thermal runaway monitoring device (1000) is connected to the power battery (2000); The thermal runaway monitoring device (1000) is activated; The storage battery (40) supplies power to the power battery (2000) and the controller motherboard (20); The protocol box (10) reads the temperature and voltage information (1) inside the power battery (2000), generates a data signal (2) containing the temperature and voltage information (1), and transmits it to the controller motherboard (20). The controller motherboard (20) receives the data signal (2) transmitted by the protocol box (10), analyzes the data signal (2), and determines whether the data signal (2) is normal. If yes, the controller motherboard (20) does not output a signal, and the thermal runaway monitoring device (1000) continues to work; if no, the controller motherboard (20) outputs a control signal (3) to the alarm (30), and the alarm (30) responds to the control signal (3) to sound an alarm.

10. A vehicle, characterized in that, include: Power battery (2000); The thermal runaway monitoring device (1000) as described in any one of claims 1 to 8, wherein the power battery (2000) is connected to the thermal runaway monitoring device (1000).

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