Rapid safety assessment device and method for power battery of new energy vehicle
By using visible light cameras, thermal imaging cameras and other detection equipment in the power battery evaluation device of new energy vehicles combined with safety status evaluation models, the problem of lack of systematic detection and data recording in the existing technology is solved, and the rapid battery safety evaluation is achieved. Accuracy and traceability.
Patent Information
- Application Number
- CN202411231177.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-01-17
AI Technical Summary
The existing new energy vehicle power battery evaluation methods lack systematic detection methods and data records, and cannot effectively evaluate the safety status of the battery, and there is a risk of overheating, short circuit, fire and explosion.
A rapid safety assessment device including a detector housing, a diagnostic stand and evaluation software was designed to collect data through visible light cameras, thermal imaging cameras, gas detectors and sound collectors, and use a safety status evaluation model to perform battery safety scores. Generate a scoring report.
Achieve non-invasive rapid data acquisition and safety assessment, provide battery safety scores and grade judgments, solve the problem of lack of systematic detection and data recording in the prior art, and improve the accuracy and traceability of battery safety assessment. .
Smart Images
Figure CN119322266A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of battery evaluation, and in particular to a device and method for rapid safety evaluation of a power battery for a new energy vehicle. Background Art
[0002] Electric new energy vehicles are mainly powered by power batteries, which may face the risk of overheating, short circuit, fire, and even explosion. In some scenarios in life, it is also necessary to conduct a rapid safety assessment of the power batteries of new energy vehicles to confirm whether they meet management requirements. Therefore, it is very important to conduct a rapid safety assessment of the power batteries of new energy vehicles.
[0003] The existing assessment methods still have shortcomings. Specifically, the current power battery assessment methods mainly use visual inspection and thermal imagers to make an intuitive inspection of the vehicle's power battery status. There is a lack of systematic detection methods, lack of vehicle data association and records, and lack of vehicle power battery safety assessment mechanisms.
[0004] Therefore, a new energy vehicle power battery rapid safety assessment device and method is needed to solve the problems raised in the above background technology. Summary of the invention
[0005] The purpose of the present invention is to provide a device and method for rapid safety assessment of power batteries for new energy vehicles to solve the problems raised in the above-mentioned background technology.
[0006] To achieve the above object, the present invention provides the following technical solutions: A new energy vehicle power battery rapid safety assessment device comprises a detector housing and a diagnostic table, wherein a detection mechanism is arranged inside the detector housing, and a handle is installed on the outer wall of the detector housing; The detection mechanism includes a visible light camera fixedly connected to the top of the detector shell, a thermal imaging camera is installed inside the detector shell and in front of the visible light camera, a fill light is fixedly connected to the top of the detector shell and near the visible light camera, a gas detector is fixedly connected to the right side of the detector shell, a sound collector is fixedly connected to the inside of the detector shell and near the gas detector, a data cable is fixedly connected to the left side of the detector shell, a battery is installed on the left side of the inner center of the detector shell, and a controller is installed on the top of the detector shell and above the battery.
[0007] As a preferred solution of the present invention, the diagnostic table is provided with evaluation software inside, and the evaluation software includes a storage unit and a safety status evaluation model, and the detector housing and the handle are both made of aluminum alloy.
[0008] As a preferred solution of the present invention, the data cable is an OBD connecting cable, and the connection between the visible light camera, thermal imaging camera, fill light, gas detector, sound collector, data cable, battery and controller are all electrically connected. The sound collector is arranged in two groups, and the controller is connected to the diagnostic station via a wireless data network.
[0009] As a preferred solution of the present invention, the following steps are included: S1, aim the visible light camera on the detector housing at the vehicle, the controller 308 starts the visible light camera, the visible light camera takes a front picture of the new energy vehicle including the license plate, the controller automatically recognizes the license plate using the picture, and uploads the vehicle photo and the license plate to the diagnosis station at the same time; S2, the diagnostic station enters the diagnostic program, inputs the data acquisition instruction into the controller, the operator places the detector housing under the vehicle chassis according to the prompt of the controller interface, the controller starts the visible light camera, infrared camera, gas detector, and sound collector, the visible light camera, infrared camera, gas detector, and sound collector detect the chassis of the new energy vehicle, obtain chassis image detection data, thermal image detection data, gas detection data, and audio detection data, and then connects the data line with the on-board control module of the new energy vehicle, the controller obtains the battery safety data and cooling data of the new energy vehicle through the data line, and the controller inputs the obtained data into the diagnostic station; S3, the diagnostic station sends the received data to the safety status assessment model, the safety status assessment model processes the data, and performs a battery safety score based on the processing results, generates a battery safety score report and a safety level judgment, and stores the generated assessment report in the storage unit. At the same time, the diagnostic station transmits the report content back to the controller, and the operator can view the relevant content by viewing the report.
[0010] As a preferred solution of the present invention, the battery safety data in S2 includes battery voltage, battery current, battery temperature, state of charge, warning information and battery internal impedance, and the cooling data includes coolant temperature, flow rate and pressure.
[0011] As a preferred solution of the present invention, the method for processing the chassis image detection data taken by the visible light camera in S3 is that the safety status assessment model performs image recognition on the taken chassis image detection data to extract obvious physical damage marks on the vehicle chassis.
[0012] As a preferred solution of the present invention, the method for processing the thermal image detection data in S3 is that the safety status assessment model obtains the thermal distribution map of the battery pack from the thermal image detection data of the vehicle chassis taken by the thermal imaging camera and extracts the hot spot temperature value.
[0013] As a preferred solution of the present invention, the method for processing the audio data in S3 is that the safety status assessment model extracts the sound spectrum characteristics of the new energy vehicle power battery when it is working from the audio data, and identifies the abnormal audio characteristics inside it.
[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the detection mechanism in the detector shell is used to collect power battery related data, and the safety performance score is performed in combination with the evaluation model, so that the vehicle power battery related data can be collected non-invasively and quickly, and a battery safety evaluation model is proposed and established. According to the battery safety evaluation model, the battery safety score is quickly given, and there is a rational understanding of battery safety. At the same time, the data collection and evaluation results of each vehicle can be recorded to facilitate data tracing, which solves the problems that the existing power battery evaluation method mainly uses visual inspection and thermal imagers to make an intuitive inspection of the vehicle power battery status, lacks a systematic detection method, lacks vehicle data association and recording, and lacks a vehicle power battery safety evaluation mechanism. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the housing of the detector of the present invention; Figure 3 It is a front cross-sectional view of the detector housing of the present invention.
[0016] In the figure: 1. detector housing; 2. diagnostic table; 3. detection mechanism; 4. handle; 301. visible light camera; 302. thermal imaging camera; 303. fill light; 304. gas detector; 305. sound collector; 306. data cable; 307. battery; 308. controller. DETAILED DESCRIPTION
[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0018] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.
[0019] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may also be a central element. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.
[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0021] For examples, see Figure 1-3 , the present invention provides a technical solution: A new energy vehicle power battery rapid safety assessment device comprises a detector housing 1 and a diagnostic table 2. A detection mechanism 3 is arranged inside the detector housing 1, and a handle 4 is installed on the outer wall of the detector housing 1. The detection mechanism 3 includes a visible light camera 301 fixedly connected to the top of the detector shell 1, a thermal imaging camera 302 is installed inside the detector shell 1 and in front of the visible light camera 301, a fill light 303 is fixedly connected to the top of the detector shell 1 and near the visible light camera 301, a gas detector 304 is fixedly connected to the right side of the detector shell 1, a sound collector 305 is fixedly connected to the inside of the detector shell 1 and near the gas detector 304, a data cable 306 is fixedly connected to the left side of the detector shell 1, a battery 307 is installed on the left side of the inner center of the detector shell 1, and a controller 308 is installed on the top of the detector shell 1 and above the battery 307.
[0022] Furthermore, the diagnostic station 2 is internally provided with evaluation software, and the evaluation software includes a storage unit and a safety status evaluation model. The detector housing 1 and the handle 4 are both made of aluminum alloy.
[0023] Furthermore, the data cable 306 is an OBD connection cable, and the visible light camera 301, the thermal imaging camera 302, the fill light 303, the gas detector 304, the sound collector 305, the data cable 306, and the battery 307 are all electrically connected to the controller 308. The sound collector 305 is provided with two groups, and the controller 308 is connected to the diagnostic station 2 via a wireless data network.
[0024] Further, the following steps are included: S1, aim the visible light camera 301 on the detector housing 1 at the vehicle, and the controller 308 starts the visible light camera 301, and the visible light camera 301 takes a front picture of the new energy vehicle including the license plate, and the controller 308 automatically recognizes the license plate using the picture, and uploads the vehicle photo and the license plate to the diagnosis station 2 at the same time; S2, the diagnostic station 2 enters the diagnostic program, inputs the data acquisition instruction into the controller 308, the operator places the detector housing 1 under the vehicle chassis according to the prompt of the controller 308 interface, the controller 308 starts the visible light camera 301, the infrared camera 302, the gas detector 304, and the sound collector 305, the visible light camera 301, the infrared camera 302, the gas detector 304, and the sound collector 305 detect the chassis of the new energy vehicle, obtain the chassis image detection data, the thermal image detection data, the gas detection data and the audio detection data, and then connects the data line 306 with the vehicle-mounted control module of the new energy vehicle, the controller 308 obtains the battery safety data and cooling data of the new energy vehicle through the data line 306, and the controller 308 inputs the obtained data into the diagnostic station 2; S3, the diagnostic station 2 sends the received data to the safety status assessment model, the safety status assessment model processes the data, and performs a battery safety score based on the processing results, generates a battery safety score report and a safety level judgment, and stores the generated assessment report in the storage unit. At the same time, the diagnostic station 2 returns the report content to the controller 308, and the operator can view the relevant content by viewing the report.
[0025] Furthermore, the battery safety data in S2 includes battery voltage, battery current, battery temperature, state of charge, warning information and battery internal impedance, and the cooling data includes coolant temperature, flow and pressure.
[0026] Furthermore, in S3, the method for processing the chassis image detection data captured by the visible light camera 301 is that the safety status assessment model performs image recognition on the captured chassis image detection data to extract obvious physical damage marks on the vehicle chassis.
[0027] Furthermore, the method for processing the thermal image detection data in S3 is that the safety status assessment model obtains the thermal distribution map of the battery pack from the thermal image detection data of the vehicle chassis taken by the thermal imaging camera 302 and extracts the hot spot temperature value.
[0028] Furthermore, the audio data processing method in S3 is that the safety status assessment model extracts the sound spectrum characteristics of the new energy vehicle power battery when it is working from the audio data, and identifies the abnormal audio characteristics inside it.
[0029] Aim the visible light camera 301 on the detector housing 1 at the vehicle, and the controller 308 starts the visible light camera 301. The visible light camera 301 takes a front picture of the new energy vehicle including the license plate, and the controller 308 automatically recognizes the license plate using the picture, and uploads the vehicle photo and the license plate to the diagnosis station 2 at the same time; The diagnostic station 2 enters the diagnostic program and inputs a data acquisition instruction into the controller 308. The operator places the detector housing 1 under the vehicle chassis according to the prompt of the controller 308 interface. The controller 308 starts the visible light camera 301, the infrared camera 302, the gas detector 304, and the sound collector 305. The visible light camera 301, the infrared camera 302, the gas detector 304, and the sound collector 305 detect the chassis of the new energy vehicle and obtain chassis image detection data, thermal image detection data, gas detection data, and audio detection data. Then the data line 306 is connected to the vehicle control module of the new energy vehicle, and the controller 308 obtains the battery safety data and cooling data of the new energy vehicle through the data line 306. The battery safety data includes battery voltage, battery current, battery temperature, state of charge, warning information and battery internal impedance, and the cooling data includes coolant temperature, flow rate and pressure. The controller 308 inputs the obtained data into the diagnostic station 2; The diagnostic station 2 sends the received data to the safety status assessment model. The safety status assessment model performs image recognition on the captured chassis image detection data and extracts obvious physical damage marks on the vehicle chassis. The safety status assessment model extracts the sound spectrum characteristics of the new energy vehicle power battery when working from the audio data and identifies the abnormal audio characteristics inside it. The safety status assessment model obtains the battery pack thermal distribution map from the vehicle chassis thermal image detection data captured by the thermal imaging camera 302 and extracts the hot spot temperature value. The safety status assessment model performs battery safety scoring based on the data processing results, generates a battery safety scoring report and safety level judgment, and stores the generated assessment report in the storage unit. At the same time, the diagnostic station 2 transmits the report content back to the controller 308, and the operator can view the relevant content by viewing the report.
[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A new energy vehicle power battery rapid safety assessment device, comprising a detector housing (1) and a diagnostic table (2), characterized in that: A detection mechanism (3) is disposed inside the detector housing (1), and a handle (4) is installed on the outer wall of the detector housing (1); The detection mechanism (3) comprises a visible light camera (301) fixedly connected to the top of the detector housing (1); a thermal imaging camera (302) is installed inside the detector housing (1) and in front of the visible light camera (301); a fill light (303) is fixedly connected to the top of the detector housing (1) and near the visible light camera (301); a gas detector (304) is fixedly connected to the right side of the detector housing (1); a sound collector (305) is fixedly connected to the inside of the detector housing (1) and near the gas detector (304); a data cable (306) is fixedly connected to the left side of the detector housing (1); a storage battery (307) is installed on the left side of the center of the detector housing (1); and a controller (308) is installed on the top of the detector housing (1) and above the storage battery (307).
2. A new energy vehicle power battery rapid safety assessment device according to claim 1, characterized in that: Evaluation software is arranged inside the diagnostic table (2), and the evaluation software includes a storage unit and a safety status evaluation model. The detector housing (1) and the handle (4) are both made of aluminum alloy.
3. A new energy vehicle power battery rapid safety assessment device according to claim 1, characterized in that: The data line (306) is an OBD connection line. The visible light camera (301), the thermal imaging camera (302), the fill light (303), the gas detector (304), the sound collector (305), the data line (306), the battery (307) and the controller (308) are all connected electrically. Two groups of the sound collector (305) are provided. The controller (308) is connected to the diagnostic station (2) via a wireless data network.
4. A method for using a new energy vehicle power battery rapid safety assessment device according to claims 1-3, characterized in that: The following steps are involved: S1, aiming the visible light camera (301) on the detector housing (1) at the vehicle, the controller 308 starts the visible light camera (301), the visible light camera (301) takes a front picture of the new energy vehicle including the license plate, the controller (308) automatically performs license plate recognition using the picture, and simultaneously uploads the vehicle picture and the license plate to the diagnostic station (2); S2, the diagnostic station (2) enters the diagnostic program, inputs a data acquisition instruction into the controller (308), and the operator places the detector housing (1) under the vehicle chassis according to the prompt of the controller (308) interface. The controller (308) starts the visible light camera (301), the infrared camera (302), the gas detector (304), and the sound collector (305). The visible light camera (301), the infrared camera (302), the gas detector (304), and the sound collector (305) detect the chassis of the new energy vehicle, obtain chassis image detection data, thermal image detection data, gas detection data, and audio detection data, and then connects the data line (306) to the vehicle control module of the new energy vehicle. The controller (308) obtains the battery safety data and cooling data of the new energy vehicle through the data line (306), and the controller (308) inputs the obtained data into the diagnostic station (2); S3, the diagnostic station (2) sends the received data to the safety status assessment model, the safety status assessment model processes the data, and performs a battery safety score based on the processing result, generates a battery safety score report and a safety level judgment, and stores the generated assessment report in the storage unit. At the same time, the diagnostic station (2) returns the report content to the controller (308), and the operator can view the relevant content by viewing the report.
5. The method for using the device for rapid safety assessment of power batteries for new energy vehicles according to claim 4 is characterized in that: The battery safety data in S2 includes battery voltage, battery current, battery temperature, state of charge, warning information and battery internal impedance, and the cooling data includes coolant temperature, flow rate and pressure.
6. The method for using the device for rapid safety assessment of power batteries for new energy vehicles according to claim 4 is characterized in that: The method for processing the chassis image detection data captured by the visible light camera (301) in S3 is that the safety status assessment model performs image recognition on the captured chassis image detection data to extract obvious physical damage marks on the vehicle chassis.
7. The method for using the device for rapid safety assessment of power batteries for new energy vehicles according to claim 4 is characterized in that: The method for processing the thermal image detection data in S3 is that the safety status assessment model obtains the thermal distribution map of the battery pack from the thermal image detection data of the vehicle chassis captured by the thermal imaging camera (302) and extracts the hot spot temperature value.
8. The method for using the device for rapid safety assessment of power batteries for new energy vehicles according to claim 4 is characterized in that: The method for processing the audio data in S3 is that the safety status assessment model extracts the sound spectrum characteristics of the new energy vehicle power battery when it is working from the audio data, and identifies the abnormal audio characteristics inside it.