XRD in-situ charging and discharging system

Abstract

The utility model discloses an XRD (X-Ray Diffraction) in-situ charging and discharging system which comprises a base, a cell body assembly and an upper cover which are sequentially connected from bottom to top, a pressing block is arranged in the middle of the tank body assembly in a sliding manner, and an insulating sleeve is arranged between the pressing block and the tank body assembly; a temperature measuring mechanism is arranged in the middle of the pressing block, and a spring is arranged between the pressing block and the base. A ray transmission window is arranged between the upper cover and the cell body assembly, a battery is arranged between the pressing block and the ray transmission window, and charging and discharging interfaces corresponding to the battery are arranged on one side of the base and one side of the cell body assembly respectively. According to the utility model, the change of the battery material in the charging and discharging process is detected through rays, and the practicability is better.

Description

Technical Field

[0001] This utility model belongs to the technical field of XRD in-situ charge and discharge equipment, and specifically relates to an XRD in-situ charge and discharge system. Background Technology

[0002] With the rapid development of new energy sources, the demand for batteries is increasing, leading to a greater and deeper need for research on multiple batteries / battery materials. In-situ XRD (X-ray diffraction) testing can detect changes in battery materials during the charging and discharging process using X-rays. In-situ XRD testing is widely used in the research and development of electrode materials and is of great significance to battery material research. For example, during the charging and discharging process of lithium-ion batteries, the changes in the crystal structure of electrode materials are affected by test conditions (temperature, current, voltage, etc.). In-situ XRD testing of electrode materials allows for real-time monitoring of changes in the crystal structure of electrode materials, immediate monitoring of sample changes under different conditions, inference of chemical reaction mechanisms, and modification of battery materials accordingly. However, most current in-situ XRD charging and discharging devices lack heating and cooling functions, or those with heating and cooling functions lack in-situ charging and discharging capabilities. Furthermore, XRD devices with heating and cooling functions are often quite large. Utility Model Content

[0003] The purpose of this invention is to provide an XRD in-situ charge-discharge system, which aims to detect changes in battery materials during the charge-discharge process using X-rays.

[0004] This utility model is mainly achieved through the following technical solutions:

[0005] An XRD in-situ charge-discharge system includes a base, a cell assembly, and a top cover connected sequentially from bottom to top; a pressure block is slidably disposed in the middle of the cell assembly, and an insulating sleeve is disposed between the pressure block and the cell assembly; a temperature measuring mechanism is disposed in the middle of the pressure block, and a spring is disposed between the pressure block and the base; an XRD transmission window is disposed between the top cover and the cell assembly, and a battery is disposed between the pressure block and the XRD transmission window; a charge-discharge interface is disposed on one side of the base and the cell assembly corresponding to the battery.

[0006] To better realize this utility model, the temperature measuring mechanism further includes a thermal resistor and a connector. The thermal resistor is provided in the middle of the base, and the temperature sensing area at the other end of the thermal resistor is inserted into the countersunk hole in the middle of the pressure block. A connector is provided on one side of the base, and the thermal resistor is connected to the connector through a wire.

[0007] To better realize this utility model, the base is further provided with a threaded hole in the middle, and a wire groove is provided between the threaded hole and the connector. One end of the thermal resistor is threadedly connected to the threaded hole, and the wire of one end of the thermal resistor passes through the threaded hole and the wire groove and is connected to the connector. A wire harness cover is provided on the top of the wire groove.

[0008] To better realize this utility model, the base is further provided with a threaded hole and a groove from the inside to the outside in the middle, and a spring is provided between the groove and the pressure block.

[0009] To better realize this utility model, an O-ring is further provided between the end of the threaded hole and the thermal resistor.

[0010] To better realize this utility model, a sealing gasket is further provided between the base and the pool body assembly, and an O-ring is provided between the pool body assembly and the X-ray transmission window.

[0011] To better realize this utility model, the ray transmission window is further described as a beryllium window.

[0012] To better realize this utility model, the pool body assembly is further provided with a connected temperature control pipeline inside, and the two ends of the temperature control pipeline are respectively provided with connection interfaces for connecting to a cooling system or a heating system.

[0013] To better realize this utility model, the temperature control pipeline is further described as a U-shaped pipeline, which includes an arc-shaped pipeline and a straight pipeline. The two ends of the arc-shaped pipeline are respectively connected to the straight pipeline, and the free end of the straight pipeline is provided with a connection interface.

[0014] To better realize this utility model, a charging and discharging interface is further provided on the pool assembly between adjacent straight pipelines.

[0015] To better realize this utility model, the connection interface of the temperature control pipeline is threadedly connected to the cooling interface, and the temperature control pipeline is connected to the cooling system through the cooling interface; the connection interface of the temperature control pipeline is threadedly connected to the heating element of the heating system.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention enables the detection of changes in battery materials during charging and discharging using X-rays. Secondly, it connects to a cooling or heating system via temperature control pipes within the battery assembly, achieving overall system temperature control. This allows for control of the battery environment and in-situ charging and discharging of the battery, facilitating in-situ thermal testing. The heating and cooling modes of this invention are flexibly selectable; its compact structure and small size make it highly practical. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the adjustable-temperature XRD in-situ charge-discharge system of this utility model.

[0019] Figure 2 This is a bottom view of the adjustable-temperature XRD in-situ charge-discharge system of this utility model.

[0020] Figure 3 for Figure 2 BB section view;

[0021] Figure 4 This is a schematic diagram of the connection structure between the pool body components and the cooling interface;

[0022] Figure 5 for Figure 4 The main view;

[0023] Figure 6 for Figure 5 DD section view;

[0024] Figure 7 This is a schematic diagram of the connection structure between the pool body assembly and the heating element.

[0025] The components are: 1-top cover, 2-battery assembly, 3-base, 4-beryllium window, 5-pressure block, 6-spring, 7-insulating sleeve, 8-charge / discharge interface, 9-thermal resistor, 10-connector, 11-wire trough, 12-wire harness cover, 13-cooling interface, 14-heating element, 15-arc-shaped pipe, 16-straight-through pipe, 17-battery. Detailed Implementation

[0026] Example 1:

[0027] An XRD in-situ charge-discharge system, such as Figures 1-3As shown, the assembly includes a base 3, a pool body assembly 2, and a top cover 1, which are sealed and connected sequentially from bottom to top. A beryllium window 4 is installed in the middle of the top cover 1. The middle of the pool body assembly 2 is a through mounting cavity, in which a pressure block 5 is slidably disposed. An insulating sleeve 7 is provided between the pressure block 5 and the mounting cavity. The pressure block 5 is elastically connected to the base 3, and a temperature measuring mechanism is built into the pressure block 5. A battery 17 is held between the pressure block 5 and the beryllium window 4. Charging and discharging interfaces 8 are respectively provided on one side of the base 3 and the pool body assembly 2 corresponding to the battery 17. The charging and discharging interface 8 of the base 3 contacts one pole of the battery 17 through the base 3, spring 6, and pressure block 5. The charging and discharging interface 8 of the pool body assembly 2 contacts the other pole of the battery 17 through the pool body assembly 2 and the beryllium window 4. Preferably, a circulating temperature control pipeline is provided inside the pool body assembly 2, and connection interfaces are provided at both ends of the temperature control pipeline for connection to a cooling system or a heating system. Specifically, the upper cover 1 and the base 3 are fixedly connected to the pool body assembly 2 by connecting screws.

[0028] Preferably, such as Figures 5-7 As shown, the temperature control pipeline is a U-shaped pipeline, which includes an arc-shaped pipeline 15 and a straight pipeline 16. The two ends of the arc-shaped pipeline 15 are respectively connected to the straight pipeline 16, and the free end of the straight pipeline 16 is provided with a connection interface. Specifically, the connection interface of the straight pipeline 16 is threadedly connected to the cooling interface 13, and the connection interface of the straight pipeline 16 is threadedly connected to the heating element 14 of the heating system.

[0029] Preferably, a sealing gasket is provided between the base 3 and the pool body assembly 2, and a matching step is provided on the side of the pool body assembly 2 that is connected to the top cover 1, and an O-ring is embedded on the side of the pool body assembly 2 near the top cover 1, and the O-ring is sealed and abuts against the top cover 1.

[0030] The heating and cooling modes of this invention can be flexibly selected. This invention connects to a cooling system or a heating system via a temperature control pipe inside the battery assembly 2, achieving overall system temperature control. It can control the charging and discharging of battery 17 under different temperature environments, enabling in-situ hot and cold testing. This invention has a compact structure and can be made very small, making it highly practical.

[0031] Example 2:

[0032] An XRD in-situ charge-discharge system, such as Figures 1-3 As shown, the XRD in-situ charge and discharge system is cylindrical in shape, including a top cover 1, a beryllium window 4, a cell assembly 2, and a base 3. The circular cavity formed inside the cell assembly 2 contains an insulating sleeve 7 and a pressure block 5. Meanwhile, the base 3 is equipped with a thermal resistor 9 and a connector 10.

[0033] Specifically, the base 3 has a threaded hole in the middle, which is threaded to the thermal resistor 9. A groove is formed around the outside of the threaded hole, and a wire groove 11 is provided at the upper end of the base 3 to connect to the threaded hole where the connector 10 is installed. The wires of the thermal resistor 9 are connected to the connector 10 through this groove. In addition, there is a wire harness cover 12 on the base 3 above the wire groove 11 to cover and shield the wire harness. The other side of the base 3 has a charging and discharging interface 8.

[0034] The pool assembly 2 has a cylindrical cavity in the middle, inside which is a ring-shaped insulating sleeve 7, and a pressure block 5 is placed inside the insulating sleeve 7; a charging / discharging interface 8 is provided on one side of the pool assembly 2. The pressure block 5 has a countersunk hole in its center, into which the temperature sensing area of ​​the thermal resistor 9 is inserted. The spring 6 is located in a circular groove outside the thermal resistor 9 in the base 3 and abuts against the pressure block 5.

[0035] The top cover 1 has a groove in the middle for placing the beryllium window 4, which serves as an XRD probe. The battery 17 is placed on the beryllium window 4 and contacts the insulating sleeve 7 and the pressure block 5, and is subjected to a certain pressure by the spring 6. After connecting the positive and negative terminals of the battery 17 to the two charging and discharging ports 8, the charging and discharging port 8 on the base 3 is connected to the pressure block 5 through the spring 6 to contact one terminal of the battery 17; the charging and discharging port 8 on the battery body assembly 2 contacts the other terminal of the battery 17 through the beryllium window 4, forming a charging and discharging process.

[0036] Preferably, a sealing gasket is provided between the pool body assembly 2 and the base 3. An O-ring seals the threaded hole and the thermal resistor 9. The bottom of the pool body assembly 2 has a groove to accommodate the O-ring, and the pool body assembly 2 and the upper cover 1 are sealed by the O-ring. This invention, through three seals, forms a central cylindrical sealed space.

[0037] like Figures 5-7 As shown, the structure for achieving controllable heating and cooling in this utility model is as follows:

[0038] like Figure 6 As shown, a U-shaped pipe is formed in the middle of the pool body assembly 2. The U-shaped pipe includes straight pipes 16 on both sides and an arc-shaped pipe 15 in the middle. The end of the straight pipe 16 is provided with a threaded hole. The charging and discharging interface 8 of the pool body assembly 2 is located in the middle of the straight pipe 16.

[0039] like Figure 5 and Figure 6 As shown, when cooling is required, the cooling interface 13 is threaded to the pool assembly 2, and then connected to the cooling system via a pipeline. The system controller is then connected to connector 10, forming a control closed loop. The cooling medium output from the cooling system flows through the pool assembly 2, cooling it. This cooling effect is transmitted to the pressure block 5 and beryllium window 4. The thermal resistor 9 within the pressure block 5 detects the temperature in real time and feeds it back to the controller for system temperature control, forming a temperature control closed loop. Figure 7 As shown, when heating is required, the heating element 14 is inserted into the straight pipe 16 and connected to the controller for heating control. The heat transfer principle is the same as above.

[0040] This invention can control the temperature environment of battery 17 and charge and discharge battery 17, thus enabling in-situ hot and cold testing. Furthermore, this invention offers selectable heating and cooling modes; its structure is very compact, its size can be minimized, and it has good practicality.

[0041] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. An XRD in-situ charge-discharge system, characterized in that, The system includes a base (3), a pool assembly (2), and a top cover (1) connected sequentially from bottom to top. A pressure block (5) is slidably disposed in the middle of the pool assembly (2), and an insulating sleeve (7) is disposed between the pressure block (5) and the pool assembly (2). A temperature measuring mechanism is disposed in the middle of the pressure block (5), and a spring (6) is disposed between the pressure block (5) and the base (3). A radiation transmission window is disposed between the top cover (1) and the pool assembly (2), and a battery (17) is disposed between the pressure block (5) and the radiation transmission window. A charging and discharging interface (8) is disposed on one side of the base (3) and the pool assembly (2) respectively corresponding to the battery (17).

2. The XRD in-situ charge-discharge system according to claim 1, characterized in that, The temperature measuring mechanism includes a thermal resistor (9) and a connector (10). The thermal resistor (9) is provided in the middle of the base (3), and the temperature sensing area at the other end of the thermal resistor (9) is inserted into the countersunk hole in the middle of the pressure block (5). The connector (10) is provided on one side of the base (3), and the thermal resistor (9) is connected to the connector (10) through a wire.

3. The XRD in-situ charge-discharge system according to claim 2, characterized in that, The base (3) has a threaded hole in the middle, and a wire groove (11) is provided between the threaded hole and the connector (10). One end of the thermal resistor (9) is threadedly connected to the threaded hole. The wire of one end of the thermal resistor (9) passes through the threaded hole and the wire groove (11) and is connected to the connector (10). A wire harness cover (12) is provided on the top of the wire groove (11).

4. The XRD in-situ charge-discharge system according to claim 3, characterized in that, The base (3) has a threaded hole and a groove arranged from the inside to the outside in the middle, and a spring (6) is arranged between the groove and the pressure block (5).

5. The XRD in-situ charge-discharge system according to claim 3, characterized in that, An O-ring is provided between the end of the threaded hole and the thermal resistor (9).

6. The XRD in-situ charge-discharge system according to claim 1, characterized in that, A sealing gasket is provided between the base (3) and the pool assembly (2), and an O-ring is provided between the pool assembly (2) and the X-ray transmission window.

7. An XRD in-situ charge-discharge system according to any one of claims 1-6, characterized in that, The pool body assembly (2) is provided with a connected temperature control pipeline inside, and the two ends of the temperature control pipeline are respectively provided with connection interfaces for connecting to the cooling system or the heating system.

8. The XRD in-situ charge-discharge system according to claim 7, characterized in that, The temperature control pipeline is a U-shaped pipeline, which includes an arc-shaped pipeline (15) and a straight pipeline (16). The two ends of the arc-shaped pipeline (15) are respectively connected to the straight pipeline (16), and the free end of the straight pipeline (16) is provided with a connection interface.

9. An XRD in-situ charge-discharge system according to claim 8, characterized in that, A charging / discharging interface (8) is provided on the pool assembly (2) between adjacent straight pipes (16).

10. An XRD in-situ charge-discharge system according to claim 7, characterized in that, The connection interface of the temperature control pipeline is threadedly connected to the cooling interface (13), and the temperature control pipeline is connected to the cooling system through the cooling interface (13); the connection interface of the temperature control pipeline is threadedly connected to the heating element (14) of the heating system.

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