Intelligent power-off early warning device for preventing spontaneous combustion of power battery due to thermal runaway

Abstract

The invention provides an intelligent power-off early warning device for preventing thermal runaway spontaneous combustion of a power battery, and belongs to the field of electric vehicles, and the intelligent power-off early warning device comprises the following steps: S101, collecting and integrating required elements: firstly, collecting the required elements and tools, and ensuring that all the elements meet the requirements of an electric vehicle battery charging power-off warning device; s102, circuit design is determined, wherein a circuit diagram is designed according to the requirement of the electric vehicle battery charging device; s103, circuit connection: connecting each element according to the designed circuit diagram; s104, programming the microcontroller: selecting a programming language to be suitable for a development environment of the microcontroller, and compiling corresponding codes to control functions of a circuit; s105, testing and debugging: after circuit connection and programming are completed, actual testing and debugging are carried out; and S106, optimization and improvement: performing corresponding optimization and improvement according to problems found in the test or an improved space. The device preliminarily solves the problem of spontaneous combustion of the power battery, and when danger is detected, the device is automatically powered off firstly.

Description

Technical Field

[0001] The present invention relates to the field of electric vehicles, and in particular to an intelligent power-off warning device for preventing thermal runaway and spontaneous combustion of power batteries. Background Art

[0002] The spontaneous combustion of electric vehicles is because the increasingly enhanced performance and related safety guarantees are out of sync, which is the root cause of the spontaneous combustion and fire accidents of many later models. In principle: the most common cause of battery spontaneous combustion / fire is a micro-short circuit inside the battery, which in turn causes the local temperature of the battery to be higher than the runaway temperature, resulting in thermal runaway. The micro-short circuit here may be caused by external impact or by lithium dendrites inside the lithium battery. From the cause of the fire, electrical failure and spontaneous combustion are the main causes of electric vehicle fires, accounting for 62.1% and 23.5% of the total number of electric vehicle fires, respectively. Among them, overcharging, battery cell failure, and electrical circuit short circuit are the root causes of electrical fires in electric vehicles. Therefore, we have designed an intelligent early warning power-off device based on thermal runaway and spontaneous combustion of power batteries. Summary of the invention

[0003] 1. Technical issues to be resolved The purpose of the present invention is to provide an intelligent power-off warning device to prevent thermal runaway and spontaneous combustion of power batteries. This device preliminarily solves the problem of spontaneous combustion of power batteries. According to the characteristics of volume expansion explosion, high temperature and so on caused by battery failure, the power will be automatically cut off when danger is detected. And by using a WiFi module, the alarm information can be sent to the client through the local area network, which makes it more practical. The materials are energy-saving, environmentally friendly and sustainable. More importantly, the technical process of this device is highly feasible, the technology is easy to implement, and the cost is low. At the same time, this product is small, exquisite and portable.

[0004] (II) Technical solution An intelligent power-off warning device for preventing thermal runaway and spontaneous combustion of a power battery comprises the following steps: S101 Collect components required for integration: First, collect required components and tools, including a microcontroller, an alarm module, a pressure monitoring module, a power failure module, a temperature monitoring module, a microphone module, a power module, and a WIFI monitoring module, to ensure that all components meet the requirements of the electric vehicle battery charging power failure alarm device; S102 Determine circuit design: Design a circuit diagram according to the requirements of the electric vehicle battery charging device; considering the intelligent power-off alarm function, the circuit diagram should include monitoring circuits for battery voltage, current and charging status, as well as control circuits for triggering alarms and indications; S103 Connect the circuit: Connect the components according to the designed circuit diagram; ensure that the positive and negative poles of the components are correctly connected, and there is no contact misalignment or short circuit in the circuit; use welding or plug-in connection to fix; S104 Programming Microcontroller: Select a programming language suitable for the development environment of the selected microcontroller and write the corresponding code to control the functions of the circuit; S105 Testing and Debugging: After completing the circuit connection and programming, actual testing and debugging are carried out; the device is connected to the electric vehicle battery charger and different charging states and abnormal power failures are simulated to test the function and accuracy of the device; S106 Optimization and Improvement: Carry out corresponding optimization and improvement according to the problems or room for improvement found in the test.

[0005] Preferably, in step S101, the microcontroller selects Arduino.

[0006] Preferably, in step S104, the programming needs to take into account the reading of the battery voltage and current sensors, and the control functions of triggering the alarm and indicator light.

[0007] Preferably, in step S104, the programming language is a graphical programming language.

[0008] Preferably, in step S106, the optimization and improvement include adjusting circuit connections, reprogramming or replacing components to achieve better performance and reliability.

[0009] Preferably, the WIFI monitoring module can send the alarm information to the client via the local area network.

[0010] Preferably, the alarm module is a buzzer, the pressure monitoring module is a voltage sensor, the power-off module is a trigger switch, and the power supply module is a battery.

[0011] Beneficial effects of the present invention: 1. When the device detects danger, it will automatically cut off the power first.

[0012] 2. This device solves the problem of spontaneous combustion of power batteries.

[0013] 3. The material is energy-saving, environmentally friendly and sustainable. More importantly, the technical process of this device is highly feasible, easy to implement and low cost. At the same time, this product is small, exquisite and portable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] 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.

[0015] Figure 1 This is the overall structure diagram of the device. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solutions in this application, the following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0017] In the description of the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0018] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0019] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0021] The present invention is described in further detail below by way of examples. Example

[0022] like Figure 1 As shown, an intelligent power-off warning device for preventing thermal runaway and spontaneous combustion of a power battery comprises the following steps: S101 Collect components required for integration: First, collect required components and tools, including a microcontroller, an alarm module, a pressure monitoring module, a power failure module, a temperature monitoring module, a microphone module, a power module, and a WIFI monitoring module, to ensure that all components meet the requirements of the electric vehicle battery charging power failure alarm device; S102 Determine circuit design: Design a circuit diagram according to the requirements of the electric vehicle battery charging device; considering the intelligent power-off alarm function, the circuit diagram should include monitoring circuits for battery voltage, current and charging status, as well as control circuits for triggering alarms and indications; S103 Connect the circuit: Connect the components according to the designed circuit diagram; ensure that the positive and negative poles of the components are correctly connected, and there is no contact misalignment or short circuit in the circuit; use welding or plug-in connection to fix; S104 Programming Microcontroller: Select a programming language suitable for the development environment of the selected microcontroller and write the corresponding code to control the functions of the circuit; S105 Testing and Debugging: After completing the circuit connection and programming, actual testing and debugging are carried out; the device is connected to the electric vehicle battery charger and different charging states and abnormal power failures are simulated to test the function and accuracy of the device; S106 Optimization and Improvement: Carry out corresponding optimization and improvement according to the problems or room for improvement found in the test.

[0023] In this embodiment, in step S101, the microcontroller selects Arduino.

[0024] In this embodiment, in step S104, the programming needs to consider the reading of the battery voltage and current sensor, and the control function of triggering the alarm and the indicator light.

[0025] In this embodiment, in step S104, the programming language is a graphical programming language.

[0026] In this embodiment, in step S106, the optimization and improvement include adjusting circuit connections, reprogramming or replacing components to achieve better performance and reliability.

[0027] In this embodiment, the WIFI monitoring module can send the alarm information to the client via the local area network.

[0028] In this embodiment, the alarm module is a buzzer, the pressure monitoring module is a voltage sensor, the power-off module is a trigger switch, and the power supply module is a battery.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0030] The above describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claim involved.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An intelligent power-off warning device for preventing thermal runaway and spontaneous combustion of power batteries, characterized in that: The following steps are involved: S101 Collect components required for integration: First, collect required components and tools, including a microcontroller, an alarm module, a pressure monitoring module, a power failure module, a temperature monitoring module, a microphone module, a power module, and a WIFI monitoring module, to ensure that all components meet the requirements of the electric vehicle battery charging power failure alarm device; S102 Determine circuit design: Design a circuit diagram according to the requirements of the electric vehicle battery charging device; considering the intelligent power-off alarm function, the circuit diagram should include monitoring circuits for battery voltage, current and charging status, as well as control circuits for triggering alarms and indications; S103 Connect the circuit: Connect each component according to the designed circuit diagram; ensure that the positive and negative poles of the components are correctly connected, and there is no contact misalignment or short circuit problem in the circuit line; Fixing is done by welding or plug-in wire connection; S104 Programming Microcontroller: Select a programming language suitable for the development environment of the selected microcontroller and write the corresponding code to control the functions of the circuit; S105 Testing and Debugging: After completing the circuit connection and programming, actual testing and debugging are carried out; Connect the device to an electric vehicle battery charger and simulate different charging states and abnormal power outages to test the device's functionality and accuracy; S106 Optimization and Improvement: Carry out corresponding optimization and improvement according to the problems or room for improvement found in the test.

2. According to claim 1, an intelligent power-off warning device for preventing thermal runaway and spontaneous combustion of power batteries is characterized in that: In step S101, the microcontroller selects Arduino.

3. According to claim 1, an intelligent power-off warning device for preventing thermal runaway and spontaneous combustion of power batteries is characterized in that: In step S104, programming needs to take into account the reading of the battery voltage and current sensor, and the control functions of triggering the alarm and indicator light.

4. According to claim 1, an intelligent power-off warning device for preventing thermal runaway and spontaneous combustion of power batteries is characterized in that: In step S104, the programming language is a graphical programming language.

5. According to claim 1, an intelligent power-off warning device for preventing thermal runaway and spontaneous combustion of power batteries is characterized in that: In step S106, the optimization and improvement may include adjusting circuit connections, reprogramming or replacing components to achieve better performance and reliability.

6. According to claim 1, an intelligent power-off warning device for preventing thermal runaway and spontaneous combustion of power batteries is characterized in that: The WIFI monitoring module can send alarm information to the client through the local area network.

7. According to claim 1, an intelligent power-off warning device for preventing thermal runaway and spontaneous combustion of power batteries is characterized in that: The alarm module is a buzzer, the pressure monitoring module is a voltage sensor, the power-off module is a trigger switch, and the power supply module is a battery.

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