Method, device and system for monitoring vehicle battery

Abstract

The invention discloses a method, device and system for monitoring a vehicle battery, and belongs to the technical field of vehicle monitoring. One specific implementation mode of the method comprises the steps that the battery temperature of a vehicle main control battery is obtained in real time; displaying a temperature image corresponding to the battery temperature by using a display device, and regulating and controlling the temperature image according to the real-time battery temperature; under the condition that the battery temperature exceeds the thermal runaway temperature threshold value, a thermal runaway alarm image is displayed; wherein the display equipment is an external decoration structure of the vehicle; the battery temperature image and the thermal runaway alarm image are dynamically displayed through the display device arranged on the surface of the vehicle body, the accuracy and the direct visualization degree of obtaining the battery temperature of the vehicle by people outside the vehicle are improved, and therefore the safety risk brought by the thermal runaway condition of the vehicle battery to the people outside the vehicle is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle monitoring, and particularly to a method, device, and system for monitoring a vehicle battery. Background Art

[0002] With the popularization of new energy vehicles, the requirements for the real-time performance and accuracy of vehicle battery monitoring are getting higher and higher; for the safety of vehicles and personnel, the monitoring and alarming of the thermal runaway of vehicle batteries are particularly important.

[0003] Currently, the alarm information for vehicle battery thermal runaway mainly uses in-vehicle devices (such as in-vehicle displays, in-vehicle audio devices, etc.) to send alarm prompts to in-vehicle personnel, and personnel at a certain distance from the vehicle cannot accurately obtain the detailed situation of vehicle battery thermal runaway, thus affecting the accuracy of the handling of vehicle battery thermal runaway by external vehicle personnel (such as rescue personnel) and resulting in a relatively high safety risk to external vehicle personnel brought by vehicle battery thermal runaway. Summary of the Invention

[0004] In view of this, the present invention provides a method, device, and system for monitoring a vehicle battery, which can obtain the battery temperature of the vehicle main control battery in real time; use a display device to display a temperature image corresponding to the battery temperature, and adjust the temperature image according to the real-time battery temperature; when the battery temperature exceeds the thermal runaway temperature threshold, the temperature image includes a thermal runaway alarm image; wherein, the display device is an external decorative structure of the vehicle; by dynamically displaying the battery temperature image and the thermal runaway alarm image through the display device arranged on the vehicle body surface, the accuracy and direct visualization degree of external vehicle personnel obtaining the battery temperature of the vehicle are improved, thereby reducing the safety risk brought by vehicle battery thermal runaway to external vehicle personnel.

[0005] To solve the above technical problems, the present invention provides the following technical solutions:

[0006] In a first aspect, the present invention provides a method for monitoring a vehicle battery, including: obtaining the battery temperature of the vehicle main control battery in real time; using a display device to display a temperature image corresponding to the battery temperature, and adjusting the temperature image according to the real-time battery temperature; wherein, the display device is an external decorative structure of the vehicle, and when the battery temperature exceeds the thermal runaway temperature threshold, the temperature image includes a thermal runaway alarm image.

[0007] Optionally, the method for monitoring a vehicle battery further includes: when the battery temperature exceeds the thermal runaway temperature threshold, enabling a vehicle backup battery, and using the vehicle backup battery to continue powering the temperature sensor of the vehicle main battery, so that the temperature sensor continues to detect the battery temperature of the vehicle main battery.

[0008] Optionally, the method for monitoring a vehicle battery further includes: when the battery temperature exceeds the thermal runaway temperature threshold, enabling a vehicle backup battery, and using the vehicle backup battery to continue powering the display device, so that the display device displays the thermal runaway alarm image included in the temperature image.

[0009] Optionally, the method for monitoring a vehicle battery further includes: according to the battery temperature obtained in real time, counting the duration corresponding to the battery temperature or a specific temperature range; when the battery temperature or the minimum value of the specific temperature range exceeds the thermal runaway temperature threshold and the duration corresponding to the battery temperature or the specific temperature range exceeding the thermal runaway temperature threshold exceeds a set duration threshold, using an in-vehicle alarm device to send a preset alarm sound to the outside and / or emit a preset alarm light to the outside.

[0010] Optionally, when the battery temperature exceeds the thermal runaway temperature threshold, the method for monitoring a vehicle battery further includes: reporting the vehicle identification, the vehicle location, and the vehicle battery temperature of the vehicle to a vehicle management platform, so as to issue a warning message for the thermal runaway state of the vehicle through the vehicle management platform.

[0011] In a second aspect, an embodiment of the present invention provides a device for monitoring a vehicle battery, including:

[0012] A data acquisition module, which is used to acquire the battery temperature of the vehicle main battery in real time;

[0013] A data display module, which is used to display a temperature image corresponding to the battery temperature by using a display device and adjust the temperature image according to the real-time battery temperature; wherein, the display device is an external decoration structure of the vehicle, and when the battery temperature exceeds the thermal runaway temperature threshold, the temperature image includes a thermal runaway alarm image.

[0014] Optionally, the device for monitoring a vehicle battery is further configured to, when the battery temperature exceeds the thermal runaway temperature threshold, enable a vehicle backup battery, and use the vehicle backup battery to continue powering the temperature sensor of the vehicle main battery, so that the temperature sensor continues to detect the battery temperature of the vehicle main battery.

[0015] Optionally, the device for monitoring the vehicle battery is further configured to, when the battery temperature exceeds the thermal runaway temperature threshold, enable the vehicle's backup battery, and use the vehicle's backup battery to continue powering the display device, so that the display device displays the thermal runaway alarm image included in the temperature image.

[0016] Optionally, the device for monitoring the vehicle battery is further configured to, according to the battery temperature obtained in real time, count the duration corresponding to the battery temperature or a specific temperature range; when the battery temperature or the minimum value of the specific temperature range exceeds the thermal runaway temperature threshold and the duration corresponding to the battery temperature or the specific temperature range exceeding the thermal runaway temperature threshold exceeds the set duration threshold, use the vehicle-mounted alarm device to send a preset alarm sound to the outside, and / or emit a preset alarm light to the outside.

[0017] Optionally, the device for monitoring the vehicle battery is further configured to, when the battery temperature exceeds the thermal runaway temperature threshold, report the vehicle identification, the vehicle location, and the vehicle battery temperature of the vehicle to the vehicle management platform, so as to issue a warning message for the thermal runaway state of the vehicle through the vehicle management platform.

[0018] In a third aspect, an embodiment of the present invention provides a system for monitoring a vehicle battery, which is characterized by including: a main control battery, a display device, and the device for monitoring the vehicle battery as described in the second aspect.

[0019] Optionally, the system for monitoring the vehicle battery further includes: a backup battery; the backup battery is configured to, when the battery temperature exceeds the thermal runaway temperature threshold, continue to power the temperature sensor of the vehicle main control battery, so that the temperature sensor continues to detect the battery temperature of the vehicle main control battery; and / or continue to power the display device, so that the display device displays the thermal runaway alarm image included in the temperature image.

[0020] In a fourth aspect, an embodiment of the present invention provides an electronic device, including:

[0021] One or more processors;

[0022] A storage device for storing one or more programs,

[0023] When the one or more programs are executed by the one or more processors, the one or more processors implement the method for monitoring a vehicle battery as described in the above embodiments of the present invention.

[0024] Fifth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program for implementing a method for monitoring the battery state of a vehicle is stored. When the computer program is executed by an in-vehicle processor, the method for monitoring the vehicle battery according to the embodiment of the present invention is implemented.

[0025] The technical solution of the above invention has the following advantages or beneficial effects: It can obtain the battery temperature of the vehicle main control battery in real time; use a display device to display a temperature image corresponding to the battery temperature, and adjust the temperature image according to the real-time battery temperature; in the case where the battery temperature exceeds the thermal runaway temperature threshold, display a thermal runaway alarm image; wherein, the display device is an external decoration structure of the vehicle; by dynamically displaying the battery temperature image and the thermal runaway alarm image through the display device arranged on the vehicle body surface, the accuracy and direct visualization degree of the vehicle external personnel obtaining the battery temperature of the vehicle are improved, thereby reducing the safety risk brought by the thermal runaway of the vehicle battery to the vehicle external personnel. Description of the Drawings

[0026] Figure 1 is a flowchart of a method for monitoring a vehicle battery according to an embodiment of the present invention;

[0027] Figure 2 is a flowchart of another method for monitoring a vehicle battery according to an embodiment of the present invention;

[0028] Figure 3 is a structural schematic diagram of a device for monitoring a vehicle battery according to an embodiment of the present invention;

[0029] Figure 4 is a structural schematic diagram of a system for monitoring a vehicle battery according to an embodiment of the present invention;

[0030] Figure 5 is a schematic diagram of another system for monitoring a vehicle battery according to an embodiment of the present invention. Detailed Embodiments

[0031] The following makes an explanation of the exemplary embodiments of the present invention in conjunction with the drawings. Various details of the embodiments of the present invention are included to assist in understanding, and they should be considered merely exemplary. Therefore, those of ordinary skill in the art should recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for the sake of clarity and conciseness, the description of well-known functions and structures is omitted below.

[0032] It should be noted that, without conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other.

[0033] In addition, in the terms of the embodiments of the present invention, the "first", "second", "third", etc. included are used to distinguish similar objects and do not necessarily describe a specific number or sequence. It should be understood that such terms can be interchanged under appropriate circumstances, which is only a way of distinction adopted when describing objects with the same attributes in the embodiments of the present invention.

[0034] In addition, the vehicle involved in the embodiments of the present invention can be an internal combustion engine vehicle with an engine as the power source, a hybrid vehicle with an engine and an electric motor as the power sources, an electric vehicle with an electric motor as the power source, etc.

[0035] In a vehicle powered by a battery, it is particularly important to detect the safety of the battery. For example, for the monitoring and handling of battery thermal runaway, the thermal runaway of a vehicle battery is a relatively dangerous battery failure state. The reason for its formation is that in certain specific situations, a series of uncontrollable violent chemical reactions occur inside the battery, generating a large amount of heat, and the heat dissipation speed of the battery itself is much less than the heat generation speed, resulting in a sharp rise in the battery temperature, and then leading to a serious decline in battery performance, structural damage, and even extreme situations such as fire and explosion.

[0036] For the thermal runaway of a single cell in a vehicle battery pack, there may be a risk of thermal propagation. Among them, thermal propagation refers to the phenomenon that after one or some battery monomers experience thermal runaway, heat is transferred inside the battery pack, causing adjacent or nearby battery monomers to also experience thermal runaway successively. And rescue personnel cannot judge whether the battery pack of the vehicle is still at risk of thermal runaway by visual observation at a position far from the vehicle, which may lead to misjudgment and even pose a risk of injury to rescue personnel.

[0037] In view of this, Figure 1 The main steps of a method for monitoring a vehicle battery provided by the embodiments of the present invention are shown in a schematic diagram:

[0038] Step S101: Obtain the battery temperature of the vehicle's main control battery in real time.

[0039] Step S102: Use a display device to display a temperature image corresponding to the battery temperature, and adjust the temperature image according to the real-time battery temperature; wherein, the display device is an external decorative structure of the vehicle, and in the case where the battery temperature exceeds the thermal runaway temperature threshold, the temperature image includes a thermal runaway alarm image.

[0040] Specifically, the temperature of the vehicle's main control battery is obtained in real time by using a temperature sensor disposed on the battery (such as a battery pack or a single battery cell), or directly obtained through the vehicle's Battery Management System (BMS). Herein, the vehicle's main control battery is the battery that currently provides power to the vehicle.

[0041] Furthermore, a temperature image corresponding to the battery temperature is displayed by using a display device. Herein, the display device is an external decorative structure of the vehicle. The display device can be a liquid crystal display device or an organic light-emitting diode display. As an external decorative structure of the vehicle, it is disposed at one or more positions on the vehicle body surface. For example: the vehicle engine cover, doors, front of the vehicle, rear of the vehicle, bumper, window edge, wheel hub, roof, entire vehicle body, etc. It can be understood that in the embodiment of the present invention, the vehicle battery temperature is displayed in real time by the display device disposed on the vehicle body surface, so that external personnel of the vehicle can accurately obtain the state of the vehicle battery at a relatively long distance. The present invention does not limit the specific position and specific size of the display device disposed on the vehicle body surface.

[0042] Furthermore, the step of displaying, by using the display device, a temperature image corresponding to the battery temperature includes: obtaining a mapping relationship between the battery temperature range and a preset temperature image; determining a target temperature range to which the battery temperature belongs; based on the target temperature range and the mapping relationship, searching for a target temperature image that matches the target temperature range, and using the display device to display the target temperature image. Specifically, a mapping relationship between the battery temperature range and the temperature image can be determined. For example: when the battery temperature is in the first normal temperature range, the temperature image is a green-filled image; when the battery temperature is in the second normal temperature range, the temperature image is a yellow-filled image; when the battery temperature is in the thermal runaway temperature range, the temperature image is a red-filled image (i.e., a thermal runaway alarm image), etc. That is, according to the real-time battery temperature, the temperature image is adjusted. It can be understood that in addition to using colors to distinguish different battery temperature ranges, the temperature image can also use different colors of text, different text sizes, different patterns, etc. in visual forms to distinguish different battery temperature ranges. Especially for the case of thermal runaway, a thermal runaway alarm image is directly displayed. The present invention does not limit the specific content, size, and style of the temperature image.

[0043] Further, in the case where the battery temperature exceeds the thermal runaway temperature threshold, the temperature image includes a thermal runaway alarm image. The thermal runaway temperature threshold can be obtained based on battery types (such as lithium iron phosphate batteries, ternary lithium batteries, lithium metal semi-solid batteries, etc.), experimental data, or battery specification data. It can be understood that the thermal runaway temperature thresholds for different types of batteries are different. When it is determined that the current temperature of the vehicle's main control battery exceeds the thermal runaway temperature threshold, a thermal runaway alarm image corresponding to the thermal runaway risk of the vehicle battery (such as a bright red filled image, an image containing alarm text, etc.) is displayed through the vehicle's external decoration structure (display device). Through the thermal runaway alarm image, the vehicle's external personnel can directly and accurately obtain the current temperature data of the vehicle's main control battery in a direct and visual way, so as to analyze and prevent further risks (such as fire, explosion, etc.), and formulate a disposal plan for the vehicle. Thereby, the accuracy of obtaining the battery state of the vehicle is improved, and the safety risk of external personnel (such as rescue personnel) is reduced.

[0044] Further, according to the battery temperature obtained in real time, the duration corresponding to the battery temperature or a specific temperature range is statistically calculated; in the case where the minimum value of the battery temperature or the specific temperature range exceeds the thermal runaway temperature threshold and the duration corresponding to the battery temperature or the specific temperature range that exceeds the thermal runaway temperature threshold exceeds a set duration threshold, a preset alarm sound is sent to the outside by using an in-vehicle alarm device, and / or a preset alarm light is emitted to the outside. Specifically, for the case of thermal runaway of the vehicle's main control battery, on the basis of displaying a thermal runaway alarm image by using a display device arranged on the vehicle body surface, an alarm message for thermal runaway can also be further sent by using an in-vehicle device. For example, a preset alarm sound is sent to the outside by using an in-vehicle sound device (an existing vehicle device or a separately arranged sound device), and a preset alarm light is sent to the outside by using an in-vehicle lighting device (an existing vehicle lamp or a separately arranged lighting device). Among them, the preset alarm sound and / or the preset alarm light can be set for the thermal runaway state, so that the vehicle's external personnel can directly obtain the alarm message through the sound or the lamp (flashing), thereby warning the people around the vehicle to keep a relatively long safe distance. The accuracy of obtaining the battery state of the vehicle is further improved, and the safety risk of external personnel (such as rescue personnel) is reduced.

[0045] Further, in the embodiments of the present invention, when it is detected that the battery temperature exceeds the thermal runaway temperature threshold, it further includes: reporting the vehicle identification of the vehicle (such as Vehicle Identification Number, vehicle identification code, abbreviated as VIN), the vehicle location, and the vehicle battery temperature to the vehicle management platform, so as to issue a warning message for the thermal runaway state of the vehicle through the vehicle management platform. Specifically, the specific information of the vehicle at risk of thermal runaway (such as the vehicle identification, vehicle location, vehicle battery temperature, etc.) is reported to the vehicle management platform, so that the vehicle management platform broadcasts and issues a warning message for the thermal runaway state of the vehicle to other nearby vehicles through the vehicle location, thereby reducing the safety risks of surrounding vehicles and personnel and improving the real-time performance and efficiency of the vehicle management platform for vehicle management.

[0046] Figure 2 The main flowchart showing the method for monitoring a vehicle battery provided by the embodiments of the present invention is shown:

[0047] Step S201: Obtain the battery temperature of the vehicle main control battery in real time.

[0048] Step S202: Determine whether the battery temperature exceeds the thermal runaway temperature threshold. If so, execute step S204; otherwise, execute step S203.

[0049] Step S203: Use the display device to display the temperature image corresponding to the battery temperature, and adjust the temperature image according to the real-time battery temperature.

[0050] Step S204: Enable the vehicle backup battery, and use the vehicle backup battery to continue to supply power to the temperature sensor of the vehicle main control battery, so that the temperature sensor continues to detect the battery temperature of the vehicle main control battery.

[0051] Step S205: Enable the vehicle backup battery, and use the vehicle backup battery to continue to supply power to the display device, so that the display device displays the thermal runaway alarm image included in the temperature image.

[0052] Specifically, based on the descriptions in steps S201 to S205, in the embodiments of the present invention, by enabling the vehicle backup battery, in the case where the vehicle main control power supply is in a state where the vehicle main control battery cannot supply power to the vehicle due to thermal runaway, the embodiments of the present invention can automatically enable the vehicle backup battery, so as to continue to monitor the battery temperature of the vehicle main control battery through the connected temperature sensor by using the vehicle backup battery, and continue to use the vehicle backup battery to power the display device, so that the display device displays the thermal runaway alarm image included in the temperature image, and can also continue to supply power to in-vehicle sound devices, in-vehicle lighting devices, etc., so that the in-vehicle sound devices and in-vehicle lighting devices send alarm information for thermal runaway. Thereby further improving the real-time performance and reliability of the alarm for the vehicle main control battery.

[0053] Figure 3 Fig. 300 shows a device 300 for monitoring a vehicle battery according to an embodiment of the present invention, including:

[0054] A data acquisition module 301, which is used to acquire the battery temperature of the vehicle main control battery in real time;

[0055] A data display module 302, which is used to display a temperature image corresponding to the battery temperature by using a display device, and adjust the temperature image according to the real-time battery temperature; wherein, the display device is an external decoration structure of the vehicle, and in the case where the battery temperature exceeds the thermal runaway temperature threshold, the temperature image includes a thermal runaway alarm image.

[0056] Figure 4 Fig. 400 shows a system 400 for monitoring a vehicle battery according to an embodiment of the present invention, including: a main control battery 401, a device 402 for monitoring the vehicle battery as Figure 3 described above, a display device 403, and a vehicle backup battery 404.

[0057] Wherein, the backup battery 404 is used to continue to supply power to the temperature sensor of the vehicle main control battery in the case where the battery temperature exceeds the thermal runaway temperature threshold, so that the temperature sensor continues to detect the battery temperature of the vehicle main control battery; and / or, continue to supply power to the display device 403, so that the display device displays the thermal runaway alarm image included in the temperature image.

[0058] Figure 5 Fig. 500 shows a schematic structural diagram of a system for monitoring a vehicle battery according to an embodiment of the present invention; including: a vehicle 501 and a vehicle management platform 502;

[0059] The vehicle 501 includes a main control battery, a device for monitoring the vehicle battery, a display device, and a vehicle backup battery.

[0060] The vehicle management platform 502 is used to receive the vehicle identification, the vehicle position, and the vehicle battery temperature sent by the vehicle, and issue a warning message about the thermal runaway state of vehicle 501 to multiple other vehicles (vehicle m to vehicle n).

[0061] The embodiment of the present invention can obtain the battery temperature of the vehicle main control battery in real time; use a display device to display a temperature image corresponding to the battery temperature, and regulate the temperature image according to the real-time battery temperature; when the battery temperature exceeds the thermal runaway temperature threshold, the temperature image includes a thermal runaway alarm image; wherein, the display device is an external decoration structure of the vehicle; by dynamically displaying the battery temperature image and the thermal runaway alarm image through the display device arranged on the vehicle body surface, the accuracy and direct visualization degree for external personnel of the vehicle to obtain the battery temperature of the vehicle are improved, thereby reducing the safety risk brought by the thermal runaway of the vehicle battery to external personnel of the vehicle; and for the state of thermal runaway of the vehicle main control power supply, the embodiment of the present invention can automatically activate the vehicle backup battery, so as to continue to monitor the battery temperature of the vehicle main control battery by connecting a temperature sensor using the vehicle backup battery, and continue to use the vehicle backup battery through the display device to make the display device display the thermal runaway alarm image included in the temperature image, and can also continue to supply power to in-vehicle sound devices, in-vehicle lighting devices, etc., so that the in-vehicle sound devices and in-vehicle lighting devices send alarm messages for thermal runaway. Thereby further improving the real-time performance and reliability of the alarm for the vehicle main control battery.

Claims

1. A method for monitoring a vehicle battery, characterized in that, Including: Obtaining the battery temperature of the vehicle's main control battery in real time; Using a display device to display a temperature image corresponding to the battery temperature, and regulating the temperature image according to the real-time battery temperature; wherein, the display device is an external decorative structure of the vehicle, and in the case where the battery temperature exceeds the thermal runaway temperature threshold, the temperature image includes a thermal runaway alarm image.

2. The method for monitoring a vehicle battery according to claim 1, wherein, Further including: In the case where the battery temperature exceeds the thermal runaway temperature threshold, enabling the vehicle's backup battery, and using the vehicle's backup battery to continue to supply power to the temperature sensor of the vehicle's main control battery, so that the temperature sensor continues to detect the battery temperature of the vehicle's main control battery.

3. The method for monitoring a vehicle battery according to claim 1, wherein Further including: In the case where the battery temperature exceeds the thermal runaway temperature threshold, enabling the vehicle's backup battery, and using the vehicle's backup battery to continue to supply power to the display device, so that the display device displays the thermal runaway alarm image included in the temperature image.

4. The method for monitoring a vehicle battery according to claim 1, wherein Further including: According to the battery temperature obtained in real time, counting the duration corresponding to the battery temperature or a specific temperature range; In the case where the battery temperature or the minimum value of the specific temperature range exceeds the thermal runaway temperature threshold and the duration corresponding to the battery temperature or the specific temperature range that exceeds the thermal runaway temperature threshold exceeds the set duration threshold, using an in-vehicle alarm device to send a preset alarm sound to the outside, and / or emitting a preset alarm light to the outside.

5. The method for monitoring a vehicle battery according to claim 1, wherein In the case where the battery temperature exceeds the thermal runaway temperature threshold, further including: Reporting the vehicle identification, the vehicle location, and the vehicle battery temperature of the vehicle to a vehicle management platform, so as to issue a warning message for the thermal runaway state of the vehicle through the vehicle management platform.

6. A device for monitoring a vehicle battery, characterized in that, Including: A data acquisition module, which is used to obtain the battery temperature of the vehicle's main control battery in real time; A display data module, which is used to use a display device to display a temperature image corresponding to the battery temperature, and regulate the temperature image according to the real-time battery temperature; wherein, the display device is an external decorative structure of the vehicle, and in the case where the battery temperature exceeds the thermal runaway temperature threshold, the temperature image includes a thermal runaway alarm image.

7. A system for monitoring a vehicle battery, characterized in that, Including: The main control battery, the display device, and the device for monitoring a vehicle battery according to claim 6.

8. The system for monitoring a vehicle battery according to claim 7, wherein, Further including: A backup battery; The backup battery is used to continue to supply power to the temperature sensor of the vehicle's main control battery in the case where the battery temperature exceeds the thermal runaway temperature threshold, so that the temperature sensor continues to detect the battery temperature of the vehicle's main control battery; And / or Continue to supply power to the display device, so that the display device displays the thermal runaway alarm image included in the temperature image.

9. An electronic device for monitoring a vehicle battery, characterized in that, Including: One or more processors; A storage device for storing one or more programs, When the one or more programs are executed by the one or more processors, the one or more processors implement the method according to any one of claims 1-5.

10. A computer-readable storage medium, on which a computer program for monitoring a vehicle battery is stored, characterized in that, Including: When the computer program is executed by a processor, it implements the method according to any one of claims 1-5.

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