New energy vehicle harmful element detection equipment and method

Abstract

The present invention discloses a device and method for detecting harmful elements in new energy vehicles. The device includes a Ni sensor for reading Ni content, a single-chip embedded system for designing an algorithm to calculate Ni concentration, a HMI (Hardware Monitoring) machine interaction device, and a cloud server. The HMI (Hardware Monitoring) machine interaction device is integrated with an app for online monitoring of harmful substances. The Ni sensor is electrically connected to the HMI and cloud server. The app records the read Ni content and displays a line graph of the Ni content at a specified interval. The app also supports downloading data files. This device and method for detecting harmful elements in new energy vehicles can test in-vehicle batteries, reducing the technical requirements for testing and shortening the testing cycle. It eliminates the need for specialized laboratories, significantly reducing testing costs, and improving the safety of new energy vehicles during use.

Description

Technical Field

[0001] The present invention belongs to the technical field of element detection, and in particular relates to equipment and methods for detecting harmful elements in new energy vehicles. Background Art

[0002] The new energy batteries currently used in automobiles are primarily lithium and lithium cobalt oxide batteries. These batteries contain elements harmful to the human body, such as nickel (Ni), chromium (Cr), and lithium (Li). Exposure to these elements and the resulting radiation can damage the nervous, immune, and endocrine systems, and may even cause cancer. Radiation is particularly potent when new energy batteries are damaged or malfunctioning, and prolonged exposure can pose a risk to human health.

[0003] Currently, traditional automobile inspection methods require high technology to detect the concentration of harmful elements in new energy electric vehicles, have a long inspection cycle, require the cooperation of professional laboratories, and have high inspection costs. Summary of the Invention

[0004] The purpose of the present invention is to provide a new energy vehicle harmful element detection device and method thereof to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The harmful element detection method comprises the following steps:

[0007] The harmful element detection method is characterized by comprising the following steps:

[0008] S1. Use an air sensor to absorb a certain cubic volume of air and store it in a sealed container.

[0009] S2. Add 5 mol / L HCl solution to the sealed container and stir thoroughly to allow the nickel oxide therein to react to generate NiCl2;

[0010] S3. Read the pH value of NiCl2 using an integrated pH meter;

[0011] S4, converting the read pH value electrical signal into a data signal through the ADC chip, and reading the data signal value of the ADC chip through the single chip microcomputer;

[0012] S5. Based on the dissociation reaction of NiCl2 in water, the concentration of Ni(OH)2 can be calculated. Since Ni(OH)2 is a weak base, its concentration can be calculated using the following formula:

[0013] [OH-]=Kw / [H+], where Kw is the ionic product of water, approximately equal to 1×10^-14; [H+] is the hydrogen ion concentration in the NiCl2 solution, which can be inferred from the pH value. The concentration of Ni(OH)2 is equal to half of [OH-], that is, the concentration of Ni(OH)2 = [OH-] / 2;

[0014] S6. Based on the stoichiometric relationship between NiCl2 and Ni(OH)2, the concentration of NiCl2 can be calculated. Since the reaction molar ratio of NiCl2 to Ni(OH)2 is 1:1, the concentration of NiCl2 is equal to the concentration of Ni(OH)2, thereby obtaining the concentration of Ni element;

[0015] S7. Analyze the substance concentration value through the single chip embedded system and respond accordingly.

[0016] The technical effects and advantages of the present invention are as follows: The new energy vehicle harmful element detection equipment and method, by measuring the Ni element content in the battery and uploading the data to the cloud server for backup, can directly share the element excess analysis to the HM machine interactive device or the App on the mobile phone synchronously, thereby reducing the technical requirements for detection, shortening the detection cycle, and eliminating the need for cooperation from professional laboratories, greatly reducing the cost of detection and improving the safety of new energy vehicles during use. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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 efforts are within the scope of protection of the present invention.

[0018] The present invention provides a harmful element detection device for new energy vehicles, including a Ni element sensor for reading Ni element content values, a single-chip embedded system for designing an algorithm to calculate Ni element concentration, a HM machine interaction device, and a cloud server. The HM machine interaction device is integrated with an app for online monitoring of harmful substances, and the Ni element sensor is electrically connected to the HM machine interaction device and the cloud server. The app records the read Ni element content values ​​and displays a data line chart of the Ni element content at a specified period. The app supports downloading data files, and users can select all recorded data within the download period by scanning a QR code. The app supports mobile and in-vehicle versions and can be downloaded to mobile phones and vehicles.

[0019] The harmful element detection method, which is used in the above-mentioned new energy vehicle harmful element detection equipment, comprises the following steps:

[0020] S1. Use an air sensor to absorb a certain cubic volume of air and store it in a sealed container.

[0021] S2. Add 5 mol / L HCl solution to the sealed container and stir thoroughly to allow the nickel oxide therein to react to generate NiCl2;

[0022] S3. Read the pH value of NiCl2 using an integrated pH meter;

[0023] S4, converting the read pH value electrical signal into a data signal through the ADC chip, and reading the data signal value of the ADC chip through the single chip microcomputer;

[0024] Nickel oxide (NiO) reacts with acid to produce nickel chloride and water. The chemical reaction formula is: NiO + 2HCl → NiCl2 + H2O. This reaction needs to be carried out in the presence of concentrated hydrochloric acid (above 3 mol / L) and the reaction temperature is generally around 50-60°C.

[0025] NiCl2 is a water-soluble inorganic compound that dissolves quickly in water. At 20°C, about 237 grams of NiCl2 can be dissolved in 100 grams of water; at 30°C, about 285 grams of NiCl2 can be dissolved in 100 grams of water.

[0026] At 40°C, approximately 348 grams of NiCl2 can be dissolved in every 100 grams of water; at 50°C, approximately 422 grams of NiCl2 can be dissolved in every 100 grams of water. When NiCl2 dissolves in water, it forms an acidic solution with a pH of approximately 4. This is because NiCl2 undergoes a hydrolysis reaction in water, producing hydrochloric acid and Ni(OH)2. NiCl2 + 2H2O → Ni(OH)2 + 2HCl. Ni(OH)2 partially dissociates in water, producing hydroxide ions and Ni2+ ions, making the solution acidic. A pH meter can be used to test the acidity of a NiCl2 solution. Since NiCl2 forms an acidic solution with a pH of approximately 4 when dissolved in water, a pH meter can be used to read the acidity or alkalinity of a NiCl2 solution.

[0027] S5. Based on the dissociation reaction of NiCl2 in water, the concentration of Ni(OH)2 can be calculated. Since Ni(OH)2 is a weak base, its concentration can be calculated using the following formula:

[0028] [OH-]=Kw / [H+], where Kw is the ionic product of water, approximately equal to 1×10^-14; [H+] is the hydrogen ion concentration in the NiCl2 solution, which can be inferred from the pH value. The concentration of Ni(OH)2 is equal to half of [OH-], that is, the concentration of Ni(OH)2 = [OH-] / 2;

[0029] Assuming that the concentration of NiCl2 is C (in mol / L) and the volume of NiCl2 solution is V (in L), the content of NiCl2 is:

[0030] n(NiCl2)=C×V

[0031] According to the chemical reaction equation: NiO + 2HCl → NiCl2 + H2O, in the reaction, every 1 mole of NiCl2 contains 1 mole of Ni ions. Therefore, the Ni content is:

[0032] n(Ni)=n(NiCl2)=C×V

[0033] S6. Based on the stoichiometric relationship between NiCl2 and Ni(OH)2, the concentration of NiCl2 can be calculated. Since the reaction molar ratio of NiCl2 to Ni(OH)2 is 1:1, the concentration of NiCl2 is equal to the concentration of Ni(OH)2, thus obtaining the concentration of Ni element;

[0034] S7. Analyze the substance concentration value through the online monitoring embedded system and respond accordingly.

[0035] Preferably, step S7 includes the following process:

[0036] S701, uploading data to a cloud storage server via the Wi-Fi module of the single-chip embedded system;

[0037] S702. The App reads the concentration value of the Ni element from the cloud server and determines whether the Ni element content exceeds the standard and is harmful to the human body. If so, a warning prompt is issued; otherwise, a prompt is given that the Ni element content is normal.

[0038] Specifically, the App records the read Ni element content value and displays a data line chart of the Ni element content at a specified period. The App supports downloading data files. Users can choose to download all recorded data within the period by scanning the QR code. The App supports mobile and in-vehicle versions and can be downloaded to mobile phones and cars.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for detecting harmful elements, characterized in that: The following steps are involved: S1. Use an air sensor to absorb a certain cubic volume of air and store it in a sealed container. S2. Add 5 mol / L HCl solution to the sealed container and stir thoroughly to allow the nickel oxide therein to react to generate NiCl2; S3. Read the pH value of NiCl2 using an integrated pH meter; S4, converting the read pH value electrical signal into a data signal through the ADC chip, and reading the data signal value of the ADC chip through the single chip microcomputer; S5. Based on the dissociation reaction of NiCl2 in water, the concentration of Ni(OH)2 can be calculated. Since Ni(OH)2 is a weak base, its concentration can be calculated using the following formula: [OH-]=Kw / [H+], where Kw is the ionic product of water, approximately equal to 1×10^-14; [H+] is the hydrogen ion concentration in the NiCl2 solution, which can be inferred from the pH value. The concentration of Ni(OH)2 is equal to half of [OH-], that is, the concentration of Ni(OH)2 = [OH-] / 2; S6. Based on the stoichiometric relationship between NiCl2 and Ni(OH)2, the concentration of NiCl2 can be calculated. Since the reaction molar ratio of NiCl2 to Ni(OH)2 is 1:1, the concentration of NiCl2 is equal to the concentration of Ni(OH)2, thereby obtaining the concentration of Ni element; S7. Analyze the substance concentration value through the single chip embedded system and respond accordingly.

2. The harmful element detection method according to claim 1, characterized in that: The step S7 includes the following process: S701, uploading data to a cloud storage server via the Wi-Fi module of the single-chip embedded system; S702. The App reads the concentration value of the Ni element from the cloud server and determines whether the Ni element content exceeds the standard and is harmful to the human body. If so, a warning prompt is issued; otherwise, a prompt is given that the Ni element content is normal.

3. A device for detecting harmful elements in new energy vehicles, used in the method for detecting harmful elements as claimed in claim 1, comprising a Ni element sensor for reading the Ni element content, a single-chip embedded system for designing an algorithm for calculating the Ni element concentration, a HM machine interaction device, and a cloud server; Its characteristics are: The HM machine interactive device is integrated with an App for online monitoring of hazardous substances, and the Ni element sensor is electrically connected to the HM machine interactive device and the cloud server.

4. The new energy vehicle harmful element detection device according to claim 3 is characterized in that: The App records the read Ni element content values ​​and displays a line graph of the Ni element content data at a specified period.

5. The new energy vehicle harmful element detection device according to claim 3 is characterized in that: The App supports downloading data files, and users can scan all recorded data within the download period by scanning the QR code.

6. The new energy vehicle harmful element detection device according to claim 3, characterized in that: The App supports mobile version and car version.