A solid-state lithium-ion battery detection system

Abstract

The utility model relates to solid -state lithium ion battery detection technical field, and disclose a kind of solid -state lithium ion battery detection system, including detection host computer and the battery compartment for placing solid -state lithium ion battery, the power interface for maintaining the charge-discharge state of solid -state lithium ion battery in battery compartment is equipped on the detection host computer, main controller is equipped in the detection host computer, the main controller includes pressure unit and temperature unit, in the utility model, modular pressure unit, temperature unit are handled to battery compartment with pressure, temperature data, wherein pressure unit, temperature unit can be independently enabled, to measure the real temperature of the battery under test in real time accurately, realize accurate temperature control, improve the authenticity of the data of experimental process, respectively independent and centralized integrated pressure unit, temperature unit can also realize the pressure change in the charge-discharge process under different temperatures in the experimental process of battery compartment, to make the experimental application scene more rich.

Description

Technical Field

[0001] This utility model relates to the field of solid-state lithium-ion battery testing technology, specifically a solid-state lithium-ion battery testing system. Background Technology

[0002] Because organic solvents in liquid electrolytes are flammable, highly corrosive, and have poor oxidation resistance, they cannot solve the lithium dendrite problem and can cause certain safety hazards under conditions such as severe impact.

[0003] Solid-state batteries can greatly alleviate the problems of liquid batteries. In terms of energy density, solid-state batteries, by combining high-energy-density materials, significantly reduce weight, and their energy density is expected to reach 500Wh / kg or even higher. In terms of safety, solid-state batteries have high strength, high electrochemical stability, and high ignition point, thus becoming a key factor in the next round of technological competition in power batteries.

[0004] Currently, existing solid-state lithium-ion batteries require simulation testing during production and design to obtain data on the charge and discharge states they can maintain under different pressures and temperatures. However, existing testing equipment requires two separate devices for temperature and pressure testing, or can only perform synchronous dual-line testing, rather than performing temperature, pressure, or comprehensive temperature and pressure testing on a single device. Therefore, this does not meet current needs. To address this, we propose a solid-state lithium-ion battery testing system. Utility Model Content

[0005] This invention provides a solid-state lithium-ion battery testing system, which has the beneficial effects of solving the problems mentioned in the background art.

[0006] This utility model provides the following technical solution: a solid-state lithium-ion battery testing system, including a testing host and a battery compartment for placing solid-state lithium-ion batteries. The testing host is provided with a power interface for maintaining the charging and discharging state of the solid-state lithium-ion batteries in the battery compartment. The testing host is provided with a main controller, which includes a pressure unit and a temperature unit. The pressure unit and the temperature unit are electrically connected to the battery compartment via data lines, and the pressure unit and temperature unit are independent of each other. The temperature unit includes a heating mechanism and a thermocouple sensor, which are electrically connected to the main controller via data lines. The heating mechanism adjusts the internal temperature of the battery compartment, and the detection end of the thermocouple sensor is inserted into the battery compartment. The pressure unit includes a pressure control mechanism and a pressure sensor, which are electrically connected to the main controller via data lines. The pressure control mechanism adjusts the internal pressure of the battery compartment, and the detection end of the pressure sensor is inserted into the battery compartment.

[0007] In this invention, modular pressure and temperature units are used to process pressure and temperature data of the battery compartment. The pressure and temperature units can be used independently. The temperature unit includes a heating mechanism and a thermocouple sensor, while the pressure unit includes a pressure sensor and a pressure control mechanism. This allows for real-time and accurate measurement of the actual temperature of the battery under test, achieving precise temperature control and improving the authenticity of the experimental data. The independent yet centralized integrated pressure and temperature units also allow for monitoring of pressure changes in the battery compartment during charging and discharging at different temperatures during the experiment, thus enriching the experimental application scenarios.

[0008] As an optional solution for the solid-state lithium-ion battery testing system described in this utility model, the temperature unit adopts a PID temperature control algorithm, and the temperature data control is realized by a microcontroller, PLC or industrial control computer.

[0009] As an optional solution of the solid-state lithium-ion battery detection system described in this utility model, the thermocouple sensor collects temperature data inside the battery compartment and inputs the collected data into the main controller.

[0010] As an optional solution of the solid-state lithium-ion battery testing system described in this utility model, the pressure sensor collects pressure data inside the battery compartment and inputs the collected data into the main controller.

[0011] As an optional solution for the solid-state lithium-ion battery testing system described in this utility model, the heating mechanism is a heating sleeve with a circular end face structure, and the solid-state lithium-ion battery is located in the center of the heating sleeve.

[0012] As an optional solution of the solid-state lithium-ion battery testing system described in this utility model, the thermocouple sensor is located directly above the battery compartment, the detection end of the thermocouple sensor penetrates through the interior of the battery compartment, and the detection end of the thermocouple sensor is attached to the solid-state lithium-ion battery.

[0013] As an optional solution of the solid-state lithium-ion battery testing system described in this utility model, the testing host is further provided with a control display panel, which is electrically connected to the main controller. The control display panel controls the main controller to perform data acquisition and processing on the pressure unit and the temperature unit.

[0014] As an optional solution for the solid-state lithium-ion battery testing system described in this utility model, the main controller further includes a power supply unit, which receives AC mains power and supplies power to the pressure unit, temperature unit, and control display panel.

[0015] This utility model has the following beneficial effects:

[0016] 1. This solid-state lithium-ion battery testing system adopts a modular structure, divided into two parts: a pressure unit and a temperature unit control module. In one system, the temperature control and pressure control are independent modules, which can be activated independently to detect temperature or pressure, or they can be activated simultaneously to perform comprehensive testing, thereby simulating various application scenarios.

[0017] 2. This solid-state lithium-ion battery testing system uses a ring-shaped heating jacket to uniformly heat the battery compartment, simulating the temperature rise process of a solid-state lithium-ion battery in actual use. This makes the test data closer to real-world data. Furthermore, it uses a PID control algorithm to control the temperature within the battery compartment within a relatively constant range, avoiding excessive fluctuations and achieving precise temperature control. This allows for real-time and accurate measurement of the actual temperature of the tested battery, improving the authenticity of the experimental data. Attached Figure Description

[0018] Figure 1 This is the control logic diagram of the main controller of this utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the detection host of this utility model;

[0020] Figure 3 This is a rear view structural diagram of the detection host of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the battery compartment of this utility model.

[0022] In the diagram: 1. Detection host; 10. Control display panel; 100. Power interface; 2. Battery compartment; 20. Heating jacket; 3. Main controller; 30. Pressure unit; 31. Temperature unit; 32. Power unit; 300. Pressure control mechanism; 301. Pressure sensor; 310. Heating mechanism; 311. Thermocouple sensor. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1 aims to facilitate the solution of how to simulate the temperature and pressure environments of solid-state lithium-ion batteries separately, so that the realized data can closely resemble actual use. For details on how to separately measure the charge and discharge states of solid-state lithium-ion batteries under extreme temperature or pressure conditions, please refer to [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 and Figure 4 A solid-state lithium-ion battery testing system includes a testing host 1 and a battery compartment 2 for holding solid-state lithium-ion batteries. The testing host 1 is equipped with a power interface 100 to maintain the charging and discharging state of the solid-state lithium-ion batteries in the battery compartment 2. After the power interface 100 is connected to the mains power, it maintains the charging and discharging state of the solid-state lithium-ion batteries in the battery compartment 2. The testing host 1 is equipped with a main controller 3, which includes a pressure unit 30 and a temperature unit 31. The pressure unit 30 and the temperature unit 31 are electrically connected to the battery compartment 2 via data cables. The pressure unit 30 and the temperature unit 31 are independent of each other and can... It can be activated individually or simultaneously to simulate various experimental environments. The detection host 1 is also equipped with a control display panel 10, which is electrically connected to the main controller 3. The control display panel 10 controls the main controller 3 to collect and process data from the pressure unit 30 and the temperature unit 31. The control display panel 10 can be used to preset the data of the pressure unit 30 and the temperature unit 31 in the main controller 3, thereby adjusting the pressure and temperature status during detection. The main controller 3 also includes a power supply unit 32, which is powered by AC mains power to supply power to the pressure unit 30, the temperature unit 31 and the control display panel 10.

[0025] In this embodiment, the test system adopts a modular structure, divided into two parts: a pressure unit 30 and a temperature unit 31 control module. In one system, the temperature control and pressure control are independent modules, which can be activated independently to detect temperature or pressure, or they can be activated simultaneously to perform comprehensive testing, thereby simulating various application scenarios.

[0026] Example 2 aims to address the problem of how to individually control the temperature within battery compartment 2 and measure the state of charge / discharge of solid-state lithium-ion batteries at different temperatures. This example is an improvement upon Example 1. For details, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 and Figure 4The temperature unit 31 employs a PID control algorithm, using a microcontroller, PLC, or industrial control computer to control temperature data. Through the PID control algorithm, the temperature inside the battery compartment 2 is kept within a relatively constant range. The temperature unit 31 includes a heating mechanism 310 and a thermocouple sensor 311. The heating mechanism 310 and the thermocouple sensor 311 are electrically connected to the main controller 3 via data lines. The heating mechanism 310 adjusts the internal temperature of the battery compartment 2. The detection end of the thermocouple sensor 311 is inserted into the battery compartment 2 to collect temperature data inside the battery compartment 2 and input the collected data into the main controller 3. The thermocouple sensor 311 detects the temperature change of the solid-state lithium-ion battery inside the battery compartment 2, thereby enabling real-time monitoring of the temperature of the solid-state lithium-ion battery at different temperatures. The temperature change and charge / discharge state of the lithium-ion battery are monitored by the thermocouple sensor 311, whose detection end extends through the inside of the battery compartment 2 and is attached to the solid-state lithium-ion battery. The thermocouple sensor 311 is directly inserted into the battery compartment 2, and the inserted thermocouple sensor 311 can maintain stable contact with the outer wall of the solid-state lithium-ion battery in the battery compartment 2, thereby improving the accuracy of the detection data. The heating mechanism 310 is a ring-shaped heating sleeve 20 with the end face structure. The solid-state lithium-ion battery is located in the center of the heating sleeve 20, and the thermocouple sensor 311 is located directly above the battery compartment 2. The ring-shaped heating sleeve 20 can uniformly heat the battery compartment 2, thereby simulating the temperature rise process of the solid-state lithium-ion battery in actual use, so that the detection data is close to the actual data.

[0027] In this embodiment, a PID control algorithm is used to control the temperature within the battery compartment 2 within a relatively constant range, avoiding excessive fluctuations and thus achieving precise temperature control. This allows for real-time and accurate measurement of the actual temperature of the battery under test, improving the authenticity of the experimental data.

[0028] It should be noted that: PLC is a programmable logic controller, and industrial control computer is the operating platform of embedded system. This enables the intelligent and automated temperature control in this embodiment to reduce temperature fluctuations caused by manual adjustment.

[0029] Example 3 aims to facilitate the solution of how to individually control the pressure within battery compartment 2 and measure the charge / discharge state of solid-state lithium-ion batteries under different pressures. This example is an improvement upon Example 1. For details, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 and Figure 4The pressure unit 30 includes a pressure control mechanism 300 and a pressure sensor 301. The pressure control mechanism 300 and the pressure sensor 301 are electrically connected to the main controller 3 via data lines. The pressure control mechanism 300 adjusts the internal pressure of the battery compartment 2 to simulate different pressure environments. The detection end of the pressure sensor 301 is inserted into the battery compartment 2 to collect the pressure data inside the battery compartment 2 and input the collected data into the main controller 3.

[0030] In this embodiment: the pressure inside the battery compartment 2 is adjusted by the pressure control mechanism 300, and the pressure data is detected by the pressure sensor 301, thereby monitoring the charging and discharging status of the solid lithium-ion battery under different pressures in real time.

[0031] The working principle of this utility model is as follows: Four battery packs form a complete battery group. This device can simultaneously and independently test each of the four battery packs. During testing, firstly, the solid-state lithium-ion batteries that make up the battery group are placed in the four battery compartments 2, and thermocouple sensors 311 are inserted into the top of the battery compartments 2. The battery compartments 2 are then connected to the testing host 1 via power supply unit 32, and simultaneously connected to mains power via power interface 100 to power the testing host 1. Subsequently, the testing host 1 presets the pressure unit 30 and the temperature unit 31. The temperature unit 31 controls the heating jacket 20 to heat the battery compartments 2 through a PID temperature control algorithm, while the pressure control mechanism 300 adjusts the pressure inside the battery compartments 2. The system adjusts the temperature and pressure parameters inside battery compartment 2, allowing the main controller 3 to detect and record the charging and discharging state of the solid-state lithium-ion battery under different temperatures and pressures. Furthermore, it can detect temperature and pressure changes of the solid-state lithium-ion battery during charging and discharging without activating the pressure control mechanism 300 and heating mechanism 310. During testing, one battery compartment 2 can be tested individually by changing its temperature and pressure to detect the charging and discharging state of the solid-state lithium-ion battery within that compartment. This enables comprehensive, automated, and high-precision measurements. Finally, the testing system can be connected to a computer to view system summary information in batches and remotely upgrade system control logic in batches.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A solid-state lithium-ion battery testing system, comprising a testing host (1) and a battery compartment (2) for placing solid-state lithium-ion batteries, wherein the testing host (1) is provided with a power interface (100) for maintaining the charging and discharging state of the solid-state lithium-ion batteries in the battery compartment (2), characterized in that: The detection host (1) is equipped with a main controller (3), which includes a pressure unit (30) and a temperature unit (31). The pressure unit (30) and the temperature unit (31) are electrically connected to the battery compartment (2) via data cables. The pressure unit (30) and the temperature unit (31) are independent of each other. The temperature unit (31) includes a heating mechanism (310) and a thermocouple sensor (311). The heating mechanism (310) and the thermocouple sensor (311) are electrically connected to the main controller (3) via data lines. The heating mechanism (310) adjusts the internal temperature of the battery compartment (2). The detection end of the thermocouple sensor (311) is inserted into the battery compartment (2). The pressure unit (30) includes a pressure control mechanism (300) and a pressure sensor (301). The pressure control mechanism (300) and the pressure sensor (301) are electrically connected to the main controller (3) via data lines. The pressure control mechanism (300) adjusts the internal pressure of the battery compartment (2), and the detection end of the pressure sensor (301) is inserted into the battery compartment (2).

2. The solid-state lithium-ion battery testing system according to claim 1, characterized in that: The temperature unit (31) adopts a PID temperature control algorithm and uses a microcontroller, PLC or industrial control computer to control the temperature data.

3. The solid-state lithium-ion battery testing system according to claim 1, characterized in that: The thermocouple sensor (311) collects temperature data inside the battery compartment (2) and inputs the collected data into the main controller (3).

4. The solid-state lithium-ion battery testing system according to claim 1, characterized in that: The pressure sensor (301) collects pressure data inside the battery compartment (2) and inputs the collected data into the main controller (3).

5. The solid-state lithium-ion battery testing system according to claim 1, characterized in that: The heating mechanism (310) is a heating sleeve (20) with a circular end face structure, and the solid lithium-ion battery is located in the center of the heating sleeve (20).

6. The solid-state lithium-ion battery testing system according to claim 1, characterized in that: The thermocouple sensor (311) is located directly above the battery compartment (2). The detection end of the thermocouple sensor (311) extends through the interior of the battery compartment (2) and is attached to the solid-state lithium-ion battery.

7. The solid-state lithium-ion battery testing system according to claim 1, characterized in that: The detection host (1) is also provided with a control display panel (10), which is electrically connected to the main controller (3). The control display panel (10) controls the main controller (3) to perform data acquisition and processing on the pressure unit (30) and the temperature unit (31).

8. A solid-state lithium-ion battery testing system according to claim 7, characterized in that: The main controller (3) also includes a power supply unit (32), which receives AC mains power to supply power to the pressure unit (30), temperature unit (31) and control display panel (10).

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