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

Abstract

The invention discloses a thermal runaway monitoring device, a thermal runaway monitoring method for a power battery in a dormant state and a vehicle, relates to the technical field of batteries, and aims to perform thermal runaway monitoring on the power battery in the dormant state with low cost and high reliability. The thermal runaway monitoring device is used for monitoring a power battery in a 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 and is used for reading temperature and voltage information in the power battery and generating and outputting a data signal containing the temperature and voltage information; the controller mainboard is connected with the protocol box and is used for receiving the data signal transmitted by the protocol box, analyzing and judging the data signal and outputting a control signal when the data signal is abnormal; the alarm is connected with the controller mainboard and is used for receiving the control signal and giving an alarm in response to the control signal; and the storage battery is connected with the controller mainboard, is also configured to be connected with the power battery and is used for supplying power to the power battery and the controller mainboard.

Description

Technical Field

[0001] The present invention relates to the field of battery technology, and in particular to a thermal runaway monitoring device, a thermal runaway monitoring method for a power battery in a dormant state, and a vehicle. Background Art

[0002] In recent years, with the continuous development of the automobile industry, new energy vehicles have become more and more popular. At the same time, the safety issues of new energy vehicles have become increasingly prominent.

[0003] The essence of safety accidents in new energy vehicles is thermal runaway of the power battery. Thermal runaway of the power battery means that the power battery cannot be controlled after reaching a certain temperature, and the temperature rises sharply. In mild cases, it overheats and smokes, and in severe cases, it catches fire and explodes. The fire spreads rapidly and is difficult to control, seriously threatening the personal and property safety of users and surrounding people. At present, there have been many accidents of new energy vehicles burning and exploding due to thermal runaway of the power battery, especially the spontaneous combustion of new energy vehicles in the power-off dormant state, which has attracted widespread attention from all walks of life.

[0004] At present, vehicles are generally equipped with thermal runaway monitoring systems, but they can only monitor the thermal runaway of the power battery when the vehicle is powered on; when the vehicle is not in use, under maintenance, or in a dormant state, the power battery is basically not monitored for thermal runaway, or only uses a temperature gun to measure the temperature outside, which is greatly affected by the ambient temperature. Therefore, when the vehicle is powered off and in dormant state, the thermal runaway of the power battery cannot be obtained, and people inside and outside the vehicle cannot know the status of the power battery, which may cause unnecessary personal injury and property loss.

[0005] Therefore, for example, the utility model patent with document number CN217917627U discloses a thermal runaway detection system after power-off hibernation, including: a car key, a timer, a battery information collector BIC, a vehicle controller VCU, and a TSP platform. The car key is connected to the battery management system BMS in communication; the timer is connected to the battery management system BMS in communication, and the battery management system BMS includes a main control unit BMU; the battery information collector BIC is connected to the main control unit BMU in communication; the vehicle controller VCU is connected to the main control unit BMU in communication; the vehicle controller VCU is remotely connected to the TSP platform through T-BOX. Adding a thermal runaway monitoring system to the structure of the vehicle itself not only increases the preparation cost, but also can only perform thermal runaway monitoring after the vehicle itself is in a power-off state, and cannot realize thermal runaway monitoring of other vehicles.

[0006] For another example, the invention patent with document number CN113036250B provides a full-time monitoring system, method and new energy vehicle for thermal runaway of a power battery, which can solve the problem that the battery management system cannot monitor thermal runaway in a dormant state. The system includes: a collection device and a battery management system connected thereto; the collection device is used to: perform timed self-wake-up after the battery management system is in a dormant state; and after self-wake-up, collect the real-time temperature and real-time voltage of each single cell of the power battery; then compare the real-time temperature and real-time voltage of each single cell with their corresponding preset thresholds; if the real-time voltage of a single cell is less than the corresponding preset voltage threshold, and / or, if the real-time temperature of a single cell is greater than the corresponding preset temperature threshold, wake up the battery management system; the battery management system is used to: after being awakened by the collection device, monitor thermal runaway based on the temperature rise rate and voltage drop rate of each single cell of the power battery. Similarly, adding a thermal runaway monitoring system to the structure of the vehicle itself not only increases the preparation cost, but also can only monitor thermal runaway after the vehicle itself is in a power-off state, and cannot monitor thermal runaway of other vehicles. Summary of the invention

[0007] The purpose of the present invention is to provide a thermal runaway monitoring device, which can perform thermal runaway monitoring on a power battery in a dormant state, has low cost, high reliability, high versatility, and is compatible with most power batteries on the market.

[0008] In order to achieve the above-mentioned objectives, the technical solution adopted by the present invention is as follows: The present invention provides a thermal runaway monitoring device for monitoring a power battery in a dormant state, the thermal runaway monitoring device comprising a protocol box, a controller mainboard, an alarm and a storage battery; the protocol box is configured to be connected to the power battery, the protocol box is used to read the temperature and voltage information inside the power battery, and generate and output a data signal containing the temperature and voltage information; the controller mainboard is connected to the protocol box, the controller mainboard is used to receive the data signal transmitted by the protocol box, and analyze and judge the data signal, and output a control signal when the data signal is abnormal; the alarm is connected to the controller mainboard, the alarm is used to receive the control signal output by the controller mainboard, and alarm in response to the control signal; the storage battery is connected to the controller mainboard, the battery is also configured to be connected to the power battery, and the storage battery is used to power the power battery and the controller mainboard.

[0009] The beneficial effects of the present invention are as follows: when the vehicle is powered off, the power battery is in a power-off dormant state, the thermal runaway monitoring device is connected to the power battery, the thermal runaway monitoring device is started, and the storage battery inside the thermal runaway monitoring device supplies power to the power battery, thereby waking up the power battery, so that the thermal runaway monitoring device can be used in the vehicle, such as a new energy vehicle, when it is in a power-off dormant state, that is, the power battery is in a power-off dormant state, or in vehicle development, testing, and after-sales maintenance, when the power battery is disconnected from the vehicle power supply and when the temperature and voltage information of the power battery cannot be obtained from a single power battery, the power battery can be monitored for thermal runaway. The thermal runaway monitoring device is applied in many scenarios, and can make full use of the power battery's own sensors to realize temperature, voltage and other data collection, without introducing other devices in the power battery, saving costs and reducing manufacturing difficulty; at the same time, the thermal runaway monitoring device has its own power supply, is convenient and portable, is not limited by the space of the use site, and is low in cost, high in reliability, high in versatility, and is compatible with most power batteries on the market.

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

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

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

[0013] In some embodiments, the thermal runaway monitoring device also includes a connector for connecting the thermal runaway monitoring device to a power battery; the connector includes two plug connectors and a connecting wiring harness, and the two plug connectors are connected via the connecting wiring harness; the number and type of pins of one of the plug connectors match the number and type of pins of the wiring harness plug interface, and the plug connector is used to be plugged into the wiring harness plug interface, and the other plug connector is configured to be plugged into the power battery plug interface.

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

[0015] In some embodiments, the thermal runaway monitoring device also includes a start button, which is connected between the wiring harness plug interface 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, which is connected to the battery and is used to charge the battery.

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

[0018] In some embodiments, the thermal runaway monitoring device also includes a shell, in which a protocol box, a battery, a controller mainboard and an alarm are disposed, a wiring harness plug interface, a charging interface and a transmission interface are disposed on the surface of the shell, and a handle is also disposed on the surface of the shell.

[0019] The present disclosure provides a method for monitoring thermal runaway of a power battery in a dormant state, which is applied to the thermal runaway monitoring device described above, and includes: S1, connecting the thermal runaway monitoring device to the power battery; S2, starting the thermal runaway monitoring device; the storage battery supplies power to the power battery and the controller mainboard; S3, a protocol box reads the temperature and voltage information inside the power battery, generates a data signal containing the temperature and voltage information, and transmits it to the controller mainboard; S4, the controller mainboard receives the data signal transmitted by the protocol box, analyzes the data signal, and determines whether the data signal is normal; S5, if so, the controller mainboard does not output a signal, and the thermal runaway monitoring device continues to work; if not, the controller mainboard outputs a control signal to the alarm, and the alarm sounds an alarm in response to the control signal.

[0020] The present disclosure provides a vehicle, comprising: a power battery and the thermal runaway monitoring device described above, wherein the power battery is connected to the thermal runaway monitoring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the present disclosure, the following briefly introduces the drawings required to be used in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can also be obtained based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams, and are not limitations on the actual size of the product involved in the embodiments of the present disclosure, the actual process of the method, the actual timing of the signal, etc.

[0022] Figure 1 A structural diagram of a thermal runaway monitoring device provided in some embodiments of the present disclosure;

[0023] Figure 2 A structural diagram of another thermal runaway monitoring device provided for some embodiments of the present disclosure;

[0024] Figure 3 A structural diagram of a wiring harness plug interface provided in some embodiments of the present disclosure;

[0025] Figure 4 A structural diagram of a thermal runaway monitoring device provided in some embodiments of the present disclosure;

[0026] Figure 5 A flow chart of a method for monitoring thermal runaway of a power battery in a dormant state provided in some embodiments of the present disclosure.

[0027] In the figure, 1000—thermal runaway monitoring device 2000—power battery 10—protocol box 20—controller mainboard 30—alarm 40—battery 50—wiring harness plug interface 60—plug connector 70—power switch 80—start button 90—charging interface 100—transmission interface 110—housing 1—temperature, voltage information 2—data signal 3—control signal 21—CAN interface 22—power supply interface 23—IO control interface 51—pin 511—negative power supply pin 512—positive power supply pin 513—ground wire pin 514—wake-up line pin 515—low data line pin 516—high data line pin 61—plug connector 62—connecting wire harness DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in some embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present disclosure.

[0029] Unless the context requires otherwise, throughout the specification and claims, the term "including" is to be interpreted as an open, inclusive meaning, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" and the like are intended to indicate that specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0030] When describing some embodiments, the expressions "coupled" and "connected" and their derivatives may be used. The term "connected" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. The term "coupled" indicates, for example, that two or more components are in direct physical or electrical contact. The term "coupled" or "communicatively coupled" may also refer to two or more components that are not in direct contact with each other, but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents of this document.

[0031] The present 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 mainboard 20, an alarm 30 and a battery 40; the protocol box 10 is configured to be connected to the power battery 2000, and 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 mainboard 20 is connected to the protocol box 10, and the controller mainboard 20 is used to receive the data signal 2 transmitted by the protocol box 10, and 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 mainboard 20, and the alarm 30 is used to receive the control signal 3 output by the controller mainboard 20, and alarm in response to the control signal 3; the battery 40 is connected to the controller mainboard 20, and the battery 40 is also configured to be connected to the power battery 2000, and the battery 40 is used to power the power battery 2000 and the controller mainboard 20.

[0032] Exemplarily, the protocol box 10, such as a CAN box, is a hardware device for vehicle network communication. The protocol box 10, such as a CAN box, can monitor, analyze and debug the vehicle's CAN network through set software. The protocol box 10, such as a 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] Exemplarily, the storage battery 40 provides a voltage of, for example, 12V to the power battery 2000 and the controller mainboard 20 to wake up the power battery 2000 in a dormant state and ensure that the thermal runaway monitoring device 1000 can operate normally.

[0034] Exemplarily, the controller main board 20 has the function of importing and writing software; it is used to receive the data signal 2 transmitted by the protocol box 10, and 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] Exemplarily, when the alarm 30 receives the control signal 3 output by the controller mainboard 20, it emits an alarm tone to alert personnel.

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

[0037] Exemplarily, the software embedded in the controller mainboard 20 includes functions such as reading and analyzing the data signal 2, data judgment and logic control, and IO control. Specifically, in order to avoid the influence of the ambient temperature on the thermal runaway monitoring of the power battery 2000, when the software is initialized, the temperature judgment logic can set two temperature thresholds, for example, 1. The temperature of the power battery 2000 is ≤56°C, that is, if the temperature signal of the power battery 2000 itself exceeds 56°C, the controller mainboard 20 outputs the control signal 3 to the alarm 30, and the alarm 30 issues an alarm after receiving the control signal 3, prompting the personnel to deal with or evacuate; 2. The temperature of the power battery 2000 rises by ≤3°C within 3s, that is, the temperature signal detection of the power battery 2000 itself, for example, 5s is a cycle, and the temperature rise of the power battery 2000 within 3s is judged in real time. If the temperature of the power battery 2000 rises by more than 3°C within 3s, the controller mainboard 20 outputs the control signal 3 to the alarm 30, and the alarm 30 issues an alarm after receiving the control signal 3, prompting the personnel to deal with or evacuate.

[0038] Exemplarily, when initializing the software settings, the voltage judgment logic can also set a voltage threshold. For example, 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 main board 20 outputs a control signal 3 to the alarm 30. After receiving the control signal 3, the alarm 30 issues an alarm to prompt personnel to take measures or evacuate.

[0039] It can be understood that the settings of the temperature judgment logic and the voltage judgment logic in the software can be specifically set according to the specific situation. The settings of the temperature judgment logic and the voltage judgment logic in the above software are only settings in some embodiments. In some other embodiments, three temperature thresholds or four temperature thresholds can also be set, and the number of temperature thresholds can be specifically set according to the actual situation; similarly, the specific data in the temperature threshold can also be specifically set according to the actual situation. For example, if the temperature of the power battery 2000 is less than 60°C, that is, if the temperature signal of the power battery 2000 itself exceeds 60°C, the controller mainboard 20 outputs a control signal 3 to the alarm 30. , the alarm 30 issues an alarm after receiving the control signal 3, prompting the personnel to take measures or evacuate; or the temperature of the power battery 2000 increases by ≤5°C within, for example, 10s, that is, the temperature signal detection of the power battery 2000 itself, for example, 10s as a cycle, and real-time judgment of the temperature increase of the power battery 2000 within 10s. If the temperature of the power battery 2000 increases by more than 5°C within 10s, the controller mainboard 20 outputs the control signal 3 to the alarm 30. The alarm 30 issues an alarm after receiving the control signal 3, prompting the personnel to take measures or evacuate, etc. The voltage judgment logic is the same as the temperature judgment logic, which will not be repeated here.

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

[0041] Exemplarily, the temperature and voltage information 1 inside the power battery 2000 is read in real time through a protocol box 10, such as a CAN box, to generate a data signal 2 containing the temperature and voltage information 1, and transmit the data signal 2 to the controller mainboard 20; the software embedded in the controller mainboard 20 sets the threshold of the temperature, voltage and other data of the power battery 2000, and the controller mainboard 20 parses the data signal 2 and determines whether the temperature and voltage inside the power battery 2000 exceed the temperature threshold and the voltage threshold. If the temperature and voltage inside the power battery 2000 do not exceed the temperature threshold and the voltage threshold, the controller mainboard 20 continues to monitor; if the temperature and voltage inside the power battery 2000 exceed the temperature threshold and the voltage threshold, the controller mainboard 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 start the vehicle thermal runaway emergency disposal or evacuate in time. When a vehicle, such as a new energy vehicle, is in a power-off dormant state, the thermal runaway monitoring device 1000 disclosed in the present invention can also be used to monitor the power battery 2000 for thermal runaway, which greatly ensures 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, the thermal runaway monitoring device 1000 is connected to the power battery 2000, the thermal runaway monitoring device 1000 is started, and the storage battery 40 inside the thermal runaway monitoring device 1000 supplies power to the power battery 2000, thereby waking up the power battery 2000, so that the thermal runaway monitoring device 1000 can be used in a vehicle, such as a new energy vehicle, in a power-off dormant state, that is, the power battery 2000 is in a power-off dormant state, or in a single power battery 2000 when the power battery 2000 is disconnected from the vehicle power supply during vehicle development, testing, after-sales maintenance, etc. 000 is unable to obtain the temperature and voltage information 1 of the power battery 2000, and the power battery 2000 is monitored for thermal runaway. The thermal runaway monitoring device 1000 is used in many scenarios, and can make full use of the sensors of the power battery 2000 itself to realize temperature, voltage and other data collection, without introducing other devices in the power battery 2000, saving costs and reducing production difficulty; at the same time, the thermal runaway monitoring device 1000 has its own power supply, which is convenient and portable, not limited by the space of the use site, and has low cost, high reliability, high versatility, and is compatible with most power batteries 2000 on the market.

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

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

[0045] Exemplarily, the wiring harness plug interface 50 in the thermal runaway monitoring device 1000 may also include other pins, and the type and number of the pins 51 of the wiring harness plug interface 50 are not limited, and the type and number of the pins 51 of the wiring harness plug interface 50 can be adjusted according to the requirements of different products.

[0046] Exemplarily, the thermal runaway monitoring device 1000 is connected to the power battery 2000 through a wiring harness plug interface 50. After the thermal runaway monitoring device 1000 is connected to the power battery 2000, the 12V voltage provided by the battery 40 is transmitted to the power battery 2000 through a pin 51 connected to the battery 40, so as to power the power battery 2000; the temperature and voltage information 1 inside the power battery 2000 is transmitted to the protocol box 10 through a pin 51 connected to the protocol box 10, and 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, Figure 2 As shown, the thermal runaway monitoring device 1000 also includes a connector 60 for connecting the thermal runaway monitoring device 1000 with the power battery 2000; the connector 60 includes two plug connectors 61 and a connecting harness 62, and the two plug connectors 61 are connected via the connecting harness 62; the number and type of pins of one of the plug connectors 61 match the number and type of pins 51 of the harness connector 50, and the plug connector 61 is used to be plugged into the harness connector 50, and the other plug connector 61 is configured to be plugged into the connector of the power battery 2000.

[0048] Exemplarily, the 12V voltage provided by the storage battery 40 is transmitted to the power battery 2000 through the plug connector 60, and the temperature and voltage information 1 inside the power battery 2000 is transmitted to the protocol box 10 through the plug connector 60. In order to enable a plug connector 61 of the plug connector 60 to be inserted into the wiring harness plug interface 50 and transmit the data signal 2, the number and type of pins of the plug connector 61 match the number and type of pins 51 of the wiring harness plug interface; it can be understood that the number and type of pins of the other plug 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 plug interface 50 of the thermal runaway monitoring device 1000, and the number and type of pins of the interface of the power battery 2000 can also be different from the number and type of pins 51 of the wiring harness plug interface 50 of the thermal runaway monitoring device 1000, which is not limited in the present disclosure.

[0049] In some embodiments, 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 . The power switch 70 is used to control whether the battery 40 supplies power to the power battery 2000 and the controller mainboard 20 .

[0050] In some embodiments, 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 plug interface 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] Exemplarily, when the power switch 70 is turned on, the storage battery 40 supplies power to the power battery 2000 and the controller main board 20. At this time, the thermal runaway monitoring device 1000 is powered on, the power battery 2000 and the controller main board 20 are awakened, and the power battery 2000 and the controller main board 20 are both in working condition; 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] Exemplarily, the power switch 70 and the start button 80 are provided, and the start button 80 can be turned off when it is necessary to temporarily stop the thermal runaway monitoring of the power battery 2000, so that the protocol box 10 cannot read the temperature and voltage information 1 inside the power battery 2000, but at this time the thermal runaway monitoring device 1000 is powered on, the power battery 2000 and the controller mainboard 20 are both in working state, and when the start button 80 is turned on, the thermal runaway monitoring device 1000 can immediately perform thermal runaway monitoring on the power battery 2000, without waiting for the thermal runaway monitoring device 1000 to start, thus saving the start-up time of the thermal runaway monitoring device 1000. And it also reduces the thermal runaway monitoring device 1000 being frequently powered on or off during the process of frequently turning on or off the power switch 70, which causes the thermal runaway monitoring device 1000 to be damaged by current breakdown.

[0053] In some embodiments, Figure 2 As shown, the thermal runaway monitoring device 1000 further includes a charging interface 90, which is connected to the storage battery 40. The external power source is connected to the charging interface 90 to charge the storage battery 40. The thermal runaway monitoring device 1000 stores electrical energy, and there is no need to frequently replace the storage battery 40, thereby improving the convenience and portability of the thermal runaway monitoring device 1000.

[0054] In some embodiments, Figure 2 As shown, the thermal runaway monitoring device 1000 further includes a transmission interface 100 , which is connected to the controller mainboard 20 , and the transmission interface 100 is used to implement the import of logic control data to the controller mainboard 20 .

[0055] For example, Figure 2 As shown, the controller main board 20 also includes a main board transmission interface 24. The transmission interface 100 of the thermal runaway monitoring device 1000 is connected to the main board transmission interface 24, and is connected to an external computer through the transmission interface 100, so that the software is imported into the controller main board 20 to realize the function of analyzing and judging the data signal 2 of the controller main board 20.

[0056] In some embodiments, Figure 4 As shown, and refer to Figure 2 The thermal runaway monitoring device 1000 also includes a shell 110, in which a protocol box 10, a battery 40, a controller mainboard 20 and an alarm 30 are arranged, and a wiring harness plug interface 50, a charging interface 90 and a transmission interface 100 are arranged on the surface of the shell 110, and a handle is also arranged on the surface of the shell 110.

[0057] For example, the housing 110 of the thermal runaway monitoring device 1000 may be a rectangular parallelepiped, and the length, width, and height of the housing 110 may be, for example, 350 mm, 250 mm, and 85 mm, which is a portable "black box" to increase the portability of the thermal runaway monitoring device 1000. The power switch 70 and the start button 80 are located on the housing 110 of the thermal runaway monitoring device 1000.

[0058] The present disclosure provides a method for monitoring thermal runaway of a power battery 2000 in a dormant state, which is applied to the thermal runaway monitoring device 1000 described above. Figure 5 As shown, and refer to Figure 1 , including: S1, the thermal runaway monitoring device 1000 is connected to the power battery 2000; S2, the thermal runaway monitoring device 1000 is started; the battery 40 supplies power to the power battery 2000 and the controller mainboard 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 mainboard 20;

[0059] S4. The controller main board 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 so, the controller main board 20 does not output a signal, and the thermal runaway monitoring device 1000 continues to work; if not, the controller main board 20 outputs a control signal 3 to the alarm 30, and the alarm 30 sounds an alarm in response to the control signal 3.

[0060] Exemplarily, before S1, the thermal runaway monitoring device 1000 is connected to the power battery 2000, the thermal runaway monitoring method of the power battery 2000 in the dormant state also 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 mainboard 20, importing the DBC protocol of the power battery 2000 into the software, and setting the alarm thresholds of temperature, voltage and other information in the software; setting the software to start automatically, that is, after the thermal runaway monitoring device 1000 is powered on, the software runs automatically.

[0061] Exemplarily, S1, connecting the thermal runaway monitoring device 1000 with the power battery 2000 includes: inserting the two plug connectors 61 of the connector 60 into the wiring harness plug interface 50 of the thermal runaway monitoring device 1000 and the plug interface of the power battery 2000 respectively, so as to connect the thermal runaway monitoring device 1000 with the power battery 2000.

[0062] Exemplarily, S2, the thermal runaway monitoring device 1000 is started; the battery 40 supplies power to the power battery 2000 and the controller main board 20, including: turning on the power switch 70 of the thermal runaway monitoring device 1000, and the battery 40 provides a 12V voltage to the power battery 2000 to wake up the power battery 2000; at the same time, the battery 40 provides a 12V voltage to the controller main board 20 to wake up the controller main board 20 in the thermal runaway monitoring device 1000, and the software in the controller main board 20 starts running.

[0063] Exemplarily, 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 main board 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 is input into the protocol box 10 through the connector 60, 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 main board 20.

[0064] The present 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] Exemplarily, the thermal runaway monitoring device 1000 can perform thermal runaway monitoring on the power battery 2000 when a vehicle, such as a new energy vehicle, is in a power-off dormant state, that is, the power battery 2000 is in a power-off dormant state, and can make full use of the sensors of the power battery 2000 itself to collect data such as temperature and voltage, without the need to introduce other devices into the power battery 2000, thereby 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 site of use, and is low-cost, highly reliable, and highly versatile, and is 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 an appropriate manner in any one or more embodiments or examples.

[0067] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions that can be thought of by any person skilled in the art within the technical scope disclosed in the present disclosure should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A thermal runaway monitoring device, characterized in that: Used to monitor a power battery (2000) in a dormant state, including: A protocol box (10), the protocol box (10) being configured to be connected to the power battery (2000), the protocol box (10) being used to read temperature and voltage information (1) inside the power battery (2000), and to generate and output a data signal (2) containing the temperature and voltage information (1); A controller mainboard (20) connected to the protocol box (10), the controller mainboard (20) being used to receive a 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) connected to the controller mainboard (20), the alarm (30) being used to receive a control signal (3) output by the controller mainboard (20) and to generate an alarm in response to the control signal (3); A storage battery (40) connected to the controller mainboard (20), the storage battery (40) being further configured to be connected to the power battery (2000), the storage battery (40) being used to supply power to the power battery (2000) and the controller mainboard (20).

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

3. The thermal runaway monitoring device according to claim 1, characterized in that: The thermal runaway monitoring device (1000) further comprises a wiring harness plug interface (50); the wiring harness plug interface (50) is configured to be connected to the power battery (2000), and the wiring harness plug interface (50) is also connected to the protocol box (10) and the storage battery (40).

4. The thermal runaway monitoring device according to claim 3, characterized in that: The wiring harness plug interface (50) comprises at least six pins (51), and the at least six pins (51) comprise a negative power pin (511), a positive power pin (512), a ground pin (513), a wake-up pin (514), a low-order data pin (515), and a high-order data pin (516); the ground pin (513), the wake-up pin (514), the low-order data pin (515), and the high-order data pin (516) are connected to the protocol box (10), and the negative power pin (511) and the positive power pin (512) are connected to the storage battery (40).

5. The thermal runaway monitoring device according to claim 4, characterized in that: The thermal runaway monitoring device (1000) further comprises a plug connector (60) for connecting the thermal runaway monitoring device (1000) with the power battery (2000); the plug connector (60) comprises two plug connectors (61) and a connecting wire harness (62), and the two plug connectors (61) are connected via the connecting wire harness (62); the number and type of pins of one of the plug connectors (61) match the number and type of pins (51) of the wire harness plug interface (50), and the plug connector (61) is used to be plugged into the wire harness plug interface (50), and the other plug connector (61) is configured to be plugged into the plug interface of the power battery (2000).

6. The thermal runaway monitoring device according to claim 1, characterized in that: The thermal runaway monitoring device (1000) further comprises a power switch (70), wherein the power switch (70) is connected to the storage battery (40), and the power switch (70) is used to control whether the storage battery (40) supplies power to the power battery (2000) and the controller mainboard (20).

7. The thermal runaway monitoring device according to claim 6, characterized in that: The thermal runaway monitoring device (1000) further comprises a start button (80), wherein the start button (80) is connected between the wiring harness plug interface (50) and the protocol box (10), and 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).

8. The thermal runaway monitoring device according to claim 1, characterized in that: The thermal runaway monitoring device (1000) further comprises a charging interface (90), wherein the charging interface (90) is connected to the storage battery (40), and the charging interface (90) is used to charge the storage battery (40).

9. The thermal runaway monitoring device according to claim 1, characterized in that: The thermal runaway monitoring device (1000) further comprises a transmission interface (100), wherein the transmission interface (100) is connected to the controller mainboard (20), and the transmission interface (100) is used to implement the import of logic control data to the controller mainboard (20).

10. The thermal runaway monitoring device according to any one of claims 1 to 9, characterized in that: The thermal runaway monitoring device (1000) further comprises a housing (110), wherein the protocol box (10), the storage battery (40), the controller mainboard (20) and the alarm (30) are arranged inside the housing (110), and a wiring harness plug interface (50), a charging interface (90) and a transmission interface (100) are arranged on the surface of the housing (110), and a handle is also arranged on the surface of the housing (110).

11. A method for monitoring thermal runaway of a power battery in a dormant state, applied to the thermal runaway monitoring device (1000) according to any one of claims 1 to 9, characterized in that: include: The thermal runaway monitoring device (1000) is connected to the power battery (2000); The thermal runaway monitoring device (1000) is started; The storage battery (40) supplies power to the power battery (2000) and the controller mainboard (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 the data signal to the controller mainboard (20); The controller mainboard (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 so, the controller mainboard (20) does not output a signal, and the thermal runaway monitoring device (1000) continues to work; if not, the controller mainboard (20) outputs a control signal (3) to the alarm (30), and the alarm (30) sounds an alarm in response to the control signal (3).

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

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