Flexible temperature and stress monitoring method for battery pack of electric trailer

Abstract

The invention provides a flexible temperature and stress monitoring method for an electric trailer battery pack, and relates to the technical field of sensors. The monitoring method comprises the steps that flexible temperature sensors and flexible stress sensors are arranged on a battery flexible coat in an array mode, a reserved interface is reserved at the top end of the battery flexible coat, the battery flexible coat wraps the outer surfaces of batteries, the batteries wrapping the battery flexible coat are arranged in an array mode to obtain array battery units, and the array battery units are connected with the flexible temperature sensors and the flexible stress sensors. A signal line of the battery cover is connected based on the reserved interface; the temperature and stress changes of the cylindrical surface of the battery are monitored based on a sensor in the battery flexible coat to obtain monitoring data of a single battery and a local area of the single battery, and the monitoring data are transmitted to a software monitoring system based on a signal line of a battery cover; and evaluating the running state of the battery pack of the electric trailer based on the software monitoring system. According to the invention, accurate monitoring of the local area of the battery pack is realized through array batteries.

Description

Technical Field

[0001] The present invention relates to the technical field of sensors, and particularly to a flexible temperature and stress monitoring method for an electric trailer battery pack. Background Art

[0002] Today, with the rapid development of electric trailer technology, the battery pack, as its core component, its performance and safety are directly related to the operating efficiency and reliability of the entire trailer. With the continuous expansion of the application scenarios of electric trailers, higher requirements are put forward for the monitoring and management of battery packs. Especially under complex and variable working conditions, the temperature and stress changes inside the battery pack become key factors affecting battery performance and safety. Developing a system that can monitor the temperature and stress of an electric trailer battery pack in real time is of great significance for ensuring the safe and stable operation of electric trailers.

[0003] Most traditional battery monitoring systems use hard-wired sensors, which are connected to monitoring devices by wire to monitor battery parameters. However, this method has many deficiencies. Traditional monitoring systems can often only monitor the overall state of the battery pack, and cannot achieve precise monitoring of individual batteries or local areas of the battery. Moreover, the circuits of traditional monitoring systems are complex and costly. Therefore, there is an urgent need to provide a solution to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a flexible temperature and stress monitoring method for an electric trailer battery pack, which improves the problem that precise monitoring of individual batteries or local areas of the battery cannot be achieved.

[0005] A flexible temperature and stress monitoring method for an electric trailer battery pack provided by the present invention adopts the following technical solutions:

[0006] The flexible temperature sensors and the flexible stress sensor array are arranged in an array on the battery flexible outer layer, and a reserved interface is provided at the top of the battery flexible outer layer. Based on the battery flexible outer layer, the outer surface of the battery is wrapped, and the batteries wrapped with the battery flexible outer layer are arranged in an array to obtain an array of battery units, and the battery cover is connected based on the reserved interface;

[0007] Based on the sensors in the battery flexible outer layer, the temperature and stress changes on the cylindrical surface of the battery are monitored to obtain the monitoring data of individual batteries and local areas of individual batteries. Based on the signal lines of the battery cover, the monitoring data is transmitted to the software monitoring system, and the operating state of the electric trailer battery pack is evaluated based on the software monitoring system.

[0008] Optionally, in the process of arranging the flexible temperature sensors and the flexible stress sensor array in an array on the battery flexible outer layer, it includes:

[0009] Construct a sensing array unit based on the array arrangement of multiple flexible temperature sensors and flexible stress sensors, and fix the sensing array unit on the flexible outer layer of the battery. The sensors in the sensing array unit are wired in an array pattern.

[0010] Optionally, during the process of constructing a sensing array unit based on the array arrangement of multiple flexible temperature sensors and flexible stress sensors, it includes:

[0011] When the sensing array unit consists of four sensors, including two stress sensors and two temperature sensors, the four sensors are arranged in a square, and the arranged temperature sensors and stress sensors are located at the diagonals of the square respectively.

[0012] Optionally, during the process of fixing the sensing array unit on the flexible outer layer of the battery, it includes:

[0013] Based on silicone potting glue as the glue for sensor adhesion, the cured glue layer of the silicone potting glue has a certain elasticity. When the battery or the sensor is subjected to vibration or impact, it can play a buffering role and protect the sensor from damage.

[0014] Optionally, during the process of obtaining an arrayed battery unit by arraying the batteries wrapped in the flexible outer layer of the battery, the array arrangement consists of a linear arrangement.

[0015] Optionally, during the process of connecting the battery cover based on a reserved interface, it includes:

[0016] The battery cover is composed of a reserved joint and a large cover plate. A plurality of reserved joints are provided at the bottom end of the battery cover unit, and the reserved interface is connected through the reserved joints.

[0017] Optionally, during the process of obtaining the monitoring data of a single battery and a local area of a single battery based on the sensors in the flexible outer layer of the battery monitoring the temperature and stress changes on the cylindrical surface of the battery, it includes:

[0018] Locate a single battery based on the arrayed battery unit, and obtain the temperature and stress changes in the local area of the cylindrical surface of a single battery based on the array arrangement of the sensors. Construct the monitoring data based on the temperature and stress changes.

[0019] A flexible temperature and stress monitoring method for an electric trailer battery pack provided by the present invention has the beneficial effects that:

[0020] 1. The arrayed battery unit is composed of multiple battery units arranged linearly. This arrangement not only improves the energy density and endurance of the battery pack but also provides more monitoring points for the monitoring system, realizing precise monitoring of the local area of the battery pack;

[0021] 2. Multiple flexible temperature sensors and a flexible stress sensor array are closely attached to the outer surface of the battery through a flexible battery outer layer, and the temperature and stress changes on the cylindrical surface of the battery are monitored in real time, which can accurately reflect the temperature and stress states of the battery pack. Description of the Drawings

[0022] Figure 1 is the flowchart of the monitoring method;

[0023] Figure 2 is the schematic structural diagram of the battery wrapped by the flexible battery outer layer;

[0024] Figure 3 is the schematic structural diagram of the flexible battery outer layer;

[0025] Figure 4 is the schematic structural diagram of the battery cover unit;

[0026] Figure 5 is the arrayed battery unit.

[0027] Description of the reference numerals: 100, flexible battery outer layer; 101, reserved interface; 102, flexible temperature sensor; 103, flexible stress sensor; 104, sensing array unit; 201, reserved joint; 202, large cover plate; 203, signal line; 300, battery. Detailed Embodiments

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meanings understood by those of ordinary skill in the art in the field to which the present invention belongs. The words such as "including" used herein are intended to mean that the elements or items appearing before this word cover the elements or items listed after this word and their equivalents, without excluding other elements or items.

[0029] The embodiments of the present invention provide a flexible temperature and stress monitoring method for an electric trailer battery pack. Refer to Figure 1 , including:

[0030] S1. The flexible temperature sensors and the flexible stress sensors are arranged in an array on the flexible battery outer layer, and a reserved interface is reserved at the top of the flexible battery outer layer. Based on the flexible battery outer layer wrapping the outer surface of the battery, the battery wrapped with the flexible battery outer layer is arranged in an array to obtain an arrayed battery unit, and the battery cover is connected based on the reserved interface;

[0031] S2. Based on the sensors within the battery flexible outer layer, monitor the temperature and stress changes on the cylindrical surface of the battery to obtain the monitoring data of a single battery and the local area of a single battery. Transmit the monitoring data to the software monitoring system via the signal lines of the battery cover, and evaluate the operating status of the electric trailer battery pack based on the software monitoring system.

[0032] In some embodiments, during the execution of step S1, refer to Figure 2 , including:

[0033] S1.1. Array the flexible temperature sensors and the flexible stress sensors on the battery flexible outer layer;

[0034] S1.2. Wrap the battery outer surface with the battery flexible outer layer;

[0035] S1.3. Set up the battery cover;

[0036] S1.4. Construct the battery pack.

[0037] Specifically, during the execution of step S1.1, refer to Figure 3 , including:

[0038] S1.1.1. Construct the sensing array unit;

[0039] S1.1.2. Fix the sensing array unit to the battery flexible outer layer;

[0040] S1.1.3. Set up the reserved interface and lay out the wires.

[0041] Specifically, during the execution of step S1.1.1, it includes: constructing the sensing array unit 104 by arraying multiple flexible temperature sensors 102 and flexible stress sensors 103.

[0042] Furthermore, when the sensing array unit 104 is composed of four sensors, it includes two temperature sensors 102 and two stress sensors 103. The four sensors are arranged in a square, and the arranged temperature sensors 102 and stress sensors 103 are respectively located at the diagonals of the square.

[0043] Specifically, during the execution of step S1.1.2, it includes: using silicone potting adhesive as the glue for sensor adhesion, fixing the sensing array unit 104 to the battery flexible outer layer 100. After the silicone potting adhesive cures, the glue layer has a certain elasticity, which can play a buffering role when the battery or the sensor is subjected to vibration or impact, protecting the sensor from damage.

[0044] In fact, the battery flexible outer layer 100 is wrapped around the cylindrical outer surface of each battery. The flexible temperature sensor 102 and the flexible stress sensor 103 in the sensing array unit 104 on the wrapped outer layer are used to monitor the temperature and stress of the battery, and the obtained temperature stress signals are transmitted to the battery cover unit through the reserved interface 101.

[0045] Further, perform step S1.1.3, arrange the signal lines 203 in the sensing array unit 104 in an array pattern, and set a reserved interface 101 at the top of the battery flexible outer layer 100. The array arrangement is composed of a linear arrangement.

[0046] In fact, during the execution of step S1.2, according to the circumference of each battery, the sensing array units in the battery flexible outer layer 100 are usually arranged in a 2×2 or 3×3 pattern, and then the battery flexible outer layer 100 is wrapped around the outer surface of the battery 300 to quickly reflect the temperature and stress changes of a single battery or a local area of the battery.

[0047] Specifically, during the execution of step S.1.3, when setting the battery cover, the battery cover is composed of a reserved connector 201 and a large cover plate 202, and a plurality of reserved connectors 201 are set at the bottom of the battery cover unit.

[0048] Further, refer to Figure 5 , perform step S1.4, arrange the batteries wrapped with the battery flexible outer layer 100 in an array to obtain an arrayed battery unit, and connect the reserved interface 101 of the battery flexible outer layer 100 based on the reserved connector 201 of the battery cover.

[0049] In fact, the arrayed battery unit is an arrayed battery pack for an electric trailer. The batteries are designed in an n×n form through arraying. The array layout facilitates the transmission of temperature and stress signals, helps improve the transmission speed of the temperature and stress signals of the batteries, and enables the on-line monitoring of the temperature and stress of the electric trailer battery pack.

[0050] In some embodiments, during the execution of step S2, it includes:

[0051] S2.1, obtain monitoring data in real time;

[0052] S2.2, obtain an evaluation result based on the monitoring data.

[0053] Specifically, during the execution of step s2.1, when obtaining monitoring data in real time, it includes: obtaining the monitoring data of a single battery and a local area of a single battery based on the sensors in the battery flexible outer layer to monitor the temperature and stress changes of the cylindrical surface of the battery.

[0054] Further, step S2.2 is executed to transmit the monitoring data to the software monitoring system based on the signal line of the battery cover, and the operating state of the electric trailer battery pack is evaluated based on the software monitoring system.

[0055] Although the embodiments of the present invention have been described in detail above, it is obvious to those skilled in the art that various modifications and changes can be made to these embodiments. However, it should be understood that such modifications and changes are all within the scope and spirit of the present invention described in the claims. Moreover, the present invention described herein may have other embodiments and can be implemented or realized in various ways.

Claims

1. A flexible temperature and stress monitoring method for an electric trailer battery pack, characterized in that: The following steps are involved: Arrange the flexible temperature sensor and the flexible stress sensor in an array on the flexible outer coat of the battery, and reserve an interface at the top of the flexible outer coat of the battery. Wrap the outer surface of the battery with the flexible outer coat of the battery, arrange the battery wrapped with the flexible outer coat in an array to obtain an array battery unit, and connect the battery cover based on the reserved interface; Based on the sensor in the flexible outer shell of the battery, the temperature and stress changes of the cylindrical surface of the battery are monitored to obtain the monitoring data of the single battery and the local area of ​​the single battery. The monitoring data is transmitted to the software monitoring system based on the signal line of the battery cover. Based on the software monitoring system, the operating status of the battery pack of the electric trailer is evaluated.

2. The flexible temperature and stress monitoring system for an electric trailer battery pack according to claim 1, characterized in that: The process of arraying the flexible temperature sensor and the flexible stress sensor on the flexible outer cover of the battery includes: A sensor array unit is constructed based on an array arrangement of multiple flexible temperature sensors and flexible stress sensors, and the sensor array unit is fixed to a flexible outer shell of a battery, and the sensors in the sensor array unit are routed in an array.

3. The flexible temperature and stress monitoring system for an electric trailer battery pack according to claim 2, characterized in that: The process of constructing a sensor array unit based on an array arrangement of multiple flexible temperature sensors and flexible stress sensors includes: When the sensing array unit is four sensors, including two stress sensors and two temperature sensors, the four sensors are arranged in a square, and the arranged temperature sensors and stress sensors are respectively located at the diagonals of the square.

4. The flexible temperature and stress monitoring system for an electric trailer battery pack according to claim 2, characterized in that: The process of fixing the sensor array unit on the battery flexible outer garment includes: Silicone potting glue is used as glue for sensor adhesion. After curing, the glue layer of silicone potting glue has a certain elasticity. When the battery or sensor is subjected to vibration or impact, it can play a buffering role and protect the sensor from damage.

5. The flexible temperature and stress monitoring system for an electric trailer battery pack according to claim 1, characterized in that: In the process of arranging the batteries wrapped in the flexible outer coat in an array to obtain arrayed battery cells, the arrayed arrangement consists of a linear arrangement.

6. The flexible temperature and stress monitoring system for an electric trailer battery pack according to claim 1, characterized in that: The process of connecting the battery cover based on the reserved interface includes: The battery cover is composed of a reserved connector and a large cover plate. A plurality of reserved connectors are arranged at the bottom end of the battery cover unit, and the reserved interfaces are connected through the reserved connectors.

7. The flexible temperature and stress monitoring system for an electric trailer battery pack according to claim 1, characterized in that: The process of monitoring the temperature and stress changes of the cylindrical surface of the battery based on the sensor in the battery flexible outer coat to obtain the monitoring data of a single battery and a local area of ​​a single battery includes: A single battery is positioned based on arrayed battery cells, and the temperature and stress changes in a local area of ​​the cylindrical surface of a single battery are obtained based on the arrayed arrangement of sensors, and monitoring data is constructed based on the temperature and stress changes.

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