Lithium ion battery constant temperature tray

Abstract

The utility model relates to a lithium ion battery constant temperature tray, relates to the technical field of lithium battery manufacturing, and aims to solve the problem that a traditional tray lacks temperature control, the lithium ion battery constant temperature tray comprises a tray outer frame, the tray outer frame is provided with a placement area for storing a lithium battery, and a temperature control assembly is arranged in the tray outer frame; the temperature control assembly comprises a heating plate and a heating coil, the heating plate is arranged at the bottom of the tray outer frame, the heating coil is arranged on the heating plate, and the tray outer frame is further provided with a heat dissipation assembly and a temperature sensing assembly which are used for dissipating heat and monitoring temperature. According to the invention, a real-time monitoring and adjusting mechanism is provided, the test accuracy is further improved, the influence of environment temperature fluctuation on the charging and discharging performance of the battery is effectively eliminated, and the test result is more accurate.

Description

Technical Field

[0001] This application relates to the field of lithium battery manufacturing technology, and in particular to a lithium-ion battery constant temperature tray. Background Technology

[0002] In the production process of lithium-ion batteries, a series of precise testing procedures are crucial to ensuring battery performance and quality. Among these, capacity testing assesses the battery's energy storage capacity and is a fundamental indicator of battery performance; DCR (DC internal resistance) testing reflects the energy loss during charging and discharging, which is significant for optimizing battery design and improving energy efficiency; and the mainstream differential voltage method (K-value testing) evaluates the battery's cycle life and health by measuring voltage changes under different conditions. These testing procedures not only require high accuracy and repeatability but also impose stringent requirements on the testing environment, especially temperature conditions.

[0003] In related technologies, traditional tray designs mainly focus on the transportation and storage functions of batteries. However, during lithium battery performance testing, the lack of temperature control often leads to test results being affected by fluctuations in ambient temperature. Specifically, when batteries are being tested on a tray, if the ambient temperature rises, the battery's charging and discharging performance may increase, resulting in higher test results. Conversely, if the ambient temperature drops, the battery's charging and discharging performance may decrease, resulting in lower test results. This deviation in performance results caused by temperature fluctuations not only affects the accuracy of the tests but also increases the uncertainty and risks in the battery production process, thus requiring improvement. Utility Model Content

[0004] To address the lack of temperature control in traditional trays, this application provides a lithium-ion battery constant temperature tray.

[0005] The lithium-ion battery constant temperature tray provided in this application adopts the following technical solution:

[0006] A lithium-ion battery constant temperature tray includes an outer frame, on which a placement area for storing lithium batteries is provided. A temperature control component is provided inside the outer frame, the temperature control component including a heating plate and a heating coil. The heating plate is arranged at the bottom of the outer frame, and the heating coil is arranged on the heating plate. The outer frame is also provided with a heat dissipation component and a temperature sensing component for heat dissipation and temperature monitoring.

[0007] Because of the lack of temperature control during lithium battery performance testing, test results are often affected by fluctuations in ambient temperature. When batteries are being tested on a tray, if the ambient temperature rises, the battery's charging and discharging performance may increase, leading to higher test results. Conversely, if the ambient temperature drops, the battery's charging and discharging performance may decrease, leading to lower test results. This deviation in performance results caused by temperature fluctuations not only affects the accuracy of the test but also increases the uncertainty and risk in the battery production process. By adopting the above technical solution, including the tray outer frame, temperature control components, heat dissipation components, and temperature sensing components are all installed on the tray outer frame. The temperature control components consist of a heating plate and a heating coil.

[0008] When testing lithium batteries, the battery to be tested is placed in a designated position within the outer frame of the tray. The temperature sensing component is activated to monitor the temperature of the tray and battery surface in real time. If the current temperature is lower than the lower limit of the target temperature range, the control system will automatically activate the heating plate and heating coil to heat the tray until the preset temperature is reached. During the heating process, the heat dissipation component remains in standby mode, ready to cool down if necessary. After the tray temperature stabilizes within the target temperature range, the performance test of the lithium battery begins. After the performance test is completed, the temperature control component and heat dissipation component are turned off, and the temperature data and battery performance data recorded during the test are collected. Through the settings of the temperature control component, heat dissipation component, and temperature sensing component, the real-time monitoring and adjustment mechanism further improves the accuracy of the test, ensuring that the lithium battery is in a stable temperature environment during the test. This effectively eliminates the impact of ambient temperature fluctuations on the battery's charging and discharging performance, making the test results more accurate. It helps reduce performance deviations caused by temperature fluctuations, making the test results more consistent and reliable, and reducing production risks.

[0009] Optionally, the outer frame of the tray is provided with a partition for separation, and the partition is arranged above the heating plate.

[0010] By adopting the above technical solution, the partition plate is installed inside the outer frame of the tray and is located above the heating plate. Through the setting of the partition plate, the partition plate plays a certain role in thermal isolation, which can separate the heating plate from the battery by a certain distance, reduce the direct transfer of heat, and control the rate of temperature rise of the battery to a certain extent.

[0011] Optionally, the outer frame of the tray is provided with a mounting base for installing a partition plate, the mounting base is provided with a mounting slot, and the partition plate is provided with a mounting protrusion for fitting the mounting slot.

[0012] By adopting the above technical solution, the mounting base is welded and fixed to the outer frame of the tray, and the partition plate is assembled on the mounting base through the mounting protrusion. With the setting of the mounting base and the mounting protrusion, the partition plate can be quickly installed on the mounting base without the need for additional fasteners or tools. The disassembly process is also very simple, which greatly improves the efficiency of installation and disassembly, saves time and labor costs, and ensures the stability of the partition plate on the mounting base.

[0013] Optionally, the heat dissipation assembly includes a plurality of cooling fans, and a side wall panel is provided on the outer frame of the tray, with the plurality of cooling fans arranged on the side wall panel.

[0014] By adopting the above technical solution, several cooling fans are installed on the side wall panel, which is located on the outer frame of the tray. The arrangement of the side wall panel and cooling fans can effectively guide the flow of cold air through the inside of the tray, accelerate the heat dissipation, and improve the heat dissipation efficiency. At the same time, installing the cooling fans on the side wall panel can save space inside the tray and improve space utilization.

[0015] Optionally, the side wall panel is provided with an assembly slot for embedding a cooling fan, and the cooling fan is embedded in the corresponding assembly slot.

[0016] By adopting the above technical solution, the assembly slot is opened on the side wall panel, and the cooling fan is installed in the assembly slot. By setting the assembly slot, the stability and firmness of the cooling fan during the installation process are ensured by embedding the cooling fan in the assembly slot, so that the fan and the side wall panel are tightly fitted, reducing the risk of the fan falling off due to vibration or external force during use, while improving the overall aesthetics of the heat dissipation component.

[0017] Optionally, each of the assembly slots is provided with an elastic buckle for fixing, and the number of elastic buckles is multiple sets.

[0018] By adopting the above technical solution, the elastic clip is installed at the opening of the assembly slot; the elastic clip allows the cooling fan to be quickly and easily installed into the assembly slot without the need for additional tools or fasteners. The plug-and-play design greatly simplifies the installation and disassembly process, improves work efficiency, and facilitates maintenance and replacement.

[0019] Optionally, the outer frame of the pallet is provided with three ventilation panels. One ventilation panel is arranged opposite to the side wall panel, and the other two ventilation panels are arranged on both sides of the side wall panel. The three ventilation panels and the side wall panel are arranged sequentially around the outer frame of the pallet, and each ventilation panel has several ventilation and heat dissipation holes.

[0020] By adopting the above technical solution, three ventilation panels are sequentially installed on the outer frame of the pallet, and ventilation and heat dissipation holes are opened on the ventilation panels. Through the setting of ventilation panels and ventilation and heat dissipation holes, the ventilation and heat dissipation holes on the ventilation panels provide a direct air circulation channel between the inside and outside of the pallet, so that the airflow generated by the cooling fan can carry away the heat inside the pallet more quickly, significantly improving the heat dissipation efficiency and helping to ensure the stable operation of the internal components of the pallet.

[0021] Optionally, the temperature sensing component includes two temperature probes, which are diagonally distributed on both sides of the outer frame of the tray.

[0022] By adopting the above technical solution, the temperature sensing component includes two temperature probes. The setting of the temperature probes ensures that the temperature sensing component can obtain temperature information at different locations inside the tray. The multi-point detection method helps to improve the accuracy of temperature sensing and reduce errors caused by single-point detection. When one probe fails or malfunctions, the other probe can still work normally, ensuring the reliability and stability of the temperature sensing component.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] By incorporating temperature control components, heat dissipation components, and temperature sensing components, the real-time monitoring and adjustment mechanism further improves the accuracy of testing, ensuring that the lithium battery is in a stable temperature environment during testing. This effectively eliminates the impact of ambient temperature fluctuations on the battery's charging and discharging performance, making the test results more accurate. It also helps reduce performance deviations caused by temperature fluctuations, resulting in more consistent and reliable test results and reducing production risks.

[0025] By setting up the separator, the separator plays a certain role in thermal isolation, which can separate the heating plate from the battery by a certain distance, reduce the direct transfer of heat, and control the rate of temperature rise of the battery to a certain extent.

[0026] By using side panels and cooling fans, cool air can be effectively guided through the inside of the tray, accelerating heat dissipation and improving heat dissipation efficiency. At the same time, installing cooling fans on the side panels can save space inside the tray and improve space utilization. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a lithium-ion battery constant temperature tray in an embodiment of this application.

[0028] Figure 2 This is a top view of a lithium-ion battery temperature-controlled tray in an embodiment of this application.

[0029] Figure 3This is a top front view of a lithium-ion battery temperature-controlled tray according to an embodiment of this application.

[0030] Explanation of reference numerals in the attached diagram: 1. Tray outer frame; 2. Placement area; 3. Temperature control component; 31. Heating plate; 32. Heating coil; 4. Heat dissipation component; 41. Cooling fan; 5. Temperature sensing component; 51. Temperature probe; 6. Partition plate; 61. Mounting protrusion; 7. Mounting base; 71. Mounting slot; 8. Side wall panel; 81. Assembly slot; 82. Elastic buckle; 9. Ventilation plate; 91. Ventilation and heat dissipation hole. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0032] This application discloses a lithium-ion battery temperature-controlled tray. (Refer to...) Figure 1 The lithium-ion battery constant temperature tray includes an outer frame 1. In this embodiment, the outer frame 1 is frame-shaped, and a placement area 2 is formed inside the outer frame 1. The placement area 2 is used to store lithium batteries.

[0033] Reference Figure 1 and Figure 2 A temperature control component 3 is installed inside the outer frame 1 of the tray. In this embodiment, the temperature control component 3 is used to heat the tray and the lithium battery to be tested until the preset temperature is reached. The temperature control component 3 includes a heating plate 31 and a heating coil 32. The heating plate 31 is installed at the bottom of the outer frame 1 of the tray, and the heating coil 32 is arranged on the heating plate 31. Both the heating plate 31 and the heating coil 32 are equipped with corresponding power supplies.

[0034] Reference Figure 1 and Figure 2 A partition plate 6 is installed inside the outer frame 1 of the tray. The partition plate 6 is arranged above the heating plate 31. The partition plate 6 plays a certain role in thermal isolation, which can separate the heating plate 31 from the battery by a certain distance, reduce the direct transfer of heat, and control the rate of temperature rise of the battery to a certain extent.

[0035] Reference Figure 1 and Figure 2 An installation base 7 is welded and fixed inside the outer frame 1 of the tray. The installation base 7 has an installation slot 71. An installation protrusion 61 is integrally formed on the partition plate 6. The installation protrusion 61 is adapted to the installation slot 71 on the installation base 7. In this embodiment, there are multiple sets of installation bases 7 and installation protrusions 61. The partition plate 6 can be quickly installed on the installation base 7 without the need for additional fasteners or tools. The disassembly process is also very simple, which greatly improves the efficiency of installation and disassembly, saves time and labor costs, and ensures the stability of the partition plate 6 on the installation base 7.

[0036] Reference Figure 1and Figure 2 A heat dissipation component 4 and a temperature sensing component 5 are installed on the outer frame 1 of the tray. In this embodiment, the heat dissipation component 4 is used to dissipate heat from the tray and the lithium battery to be tested, and the temperature sensing component 5 is used to detect the temperature of the tray and the lithium battery to be tested.

[0037] Reference Figure 1 and Figure 2 The temperature sensing component 5 includes two temperature probes 51, which are diagonally distributed on both sides of the outer frame 1 of the tray. This ensures that the temperature sensing component 5 can obtain temperature information from different locations inside the tray. The multi-point detection method helps to improve the accuracy of temperature sensing and reduce errors caused by single-point detection. When one temperature probe 51 fails or malfunctions, the other temperature probe 51 can still work normally, ensuring the reliability and stability of the temperature sensing component 5.

[0038] Reference Figure 1 The heat dissipation assembly 4 includes several cooling fans 41. A side wall panel 8 is installed on the outer frame 1 of the tray. The cooling fans 41 are arranged on the side wall panel 8. In this embodiment, the side wall panel 8 is provided with an assembly groove 81 for the cooling fans 41 to be embedded in. The cooling fans 41 are embedded in the corresponding assembly groove 81. By embedding the cooling fans 41 into the assembly groove 81, the stability and firmness of the cooling fans 41 during the installation process are ensured, so that the fans and the side wall panel 8 form a tight fit, reducing the risk of the fans falling off due to vibration or external force during use, and improving the overall aesthetics of the heat dissipation assembly 4.

[0039] Reference Figure 1 An elastic buckle 82 is installed at the opening of any assembly slot 81. In this embodiment, there are multiple sets of elastic buckles 82. The elastic buckle 82 allows the cooling fan 41 to be quickly and easily installed into the assembly slot 81 without the need for additional tools or fasteners. The plug-and-play design greatly simplifies the installation and disassembly process, improves work efficiency, and facilitates maintenance and replacement.

[0040] Reference Figure 1 and Figure 3 Three ventilation panels 9 are fixedly installed on the outer frame 1 of the pallet. One ventilation panel 9 is arranged opposite to the side wall panel 8, and the other two ventilation panels 9 are arranged on both sides of the side wall panel 8. The three ventilation panels 9 and the side wall panel 8 are arranged in sequence along the perimeter of the outer frame 1 of the pallet. Several ventilation and heat dissipation holes 91 are opened through each ventilation panel 9. The ventilation and heat dissipation holes 91 on the ventilation panel 9 provide a direct air circulation channel between the inside and outside of the pallet, so that the airflow generated by the cooling fan 41 can carry away the heat inside the pallet more quickly, which significantly improves the heat dissipation efficiency and helps to ensure the stable operation of the internal components of the pallet.

[0041] The implementation principle of a constant temperature tray for lithium-ion batteries in this application embodiment is as follows: When the lithium battery is being tested, the lithium battery to be tested is placed in a designated position within the outer frame 1 of the tray. The temperature sensing probe 51 is activated to monitor the temperature of the tray and the battery surface in real time. If the current temperature is lower than the lower limit of the target temperature range, the control system will automatically activate the heating plate 31 and the heating coil 32 to heat the tray until the preset temperature is reached. During the heating process, the cooling fan 41 remains in standby mode, ready to cool down if necessary. After the tray temperature stabilizes within the target temperature range, the performance test of the lithium battery begins. After the performance test is completed, the temperature control component 3 and the heat dissipation component 4 are turned off, and the temperature data and battery performance data recorded during the test are collected. Through the settings of the temperature control component 3, the heat dissipation component 4, and the temperature sensing component 5, the real-time monitoring and adjustment mechanism further improves the accuracy of the test, ensures that the lithium battery is in a stable temperature environment during the test, effectively eliminates the influence of ambient temperature fluctuations on the battery charging and discharging performance, makes the test results more accurate, helps to reduce the deviation of performance results caused by temperature fluctuations, makes the test results more consistent and reliable, and reduces production risks.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A lithium-ion battery constant temperature tray, characterized in that: The device includes an outer frame (1) for a tray, a placement area (2) for storing lithium batteries, a temperature control component (3) inside the outer frame (1), the temperature control component (3) including a heating plate (31) and a heating coil (32), the heating plate (31) being arranged at the bottom of the outer frame (1), the heating coil (32) being arranged on the heating plate (31), and a heat dissipation component (4) and a temperature sensing component (5) for heat dissipation and temperature monitoring.

2. The lithium-ion battery constant temperature tray according to claim 1, characterized in that: The outer frame (1) of the tray is provided with a partition plate (6) for separation, and the partition plate (6) is arranged above the heating plate (31).

3. A lithium-ion battery constant temperature tray according to claim 2, characterized in that: The outer frame (1) of the tray is provided with a mounting seat (7) for installing the partition plate (6). The mounting seat (7) is provided with a mounting slot (71), and the partition plate (6) is provided with a mounting protrusion (61) for fitting the mounting slot (71).

4. A lithium-ion battery constant temperature tray according to claim 1, characterized in that: The heat dissipation assembly (4) includes several heat dissipation fans (41), and a side wall plate (8) is provided on the outer frame (1) of the tray, with the several heat dissipation fans (41) arranged on the side wall plate (8).

5. A lithium-ion battery constant temperature tray according to claim 4, characterized in that: The side wall panel (8) is provided with an assembly slot (81) for embedding a cooling fan (41), and the cooling fan (41) is embedded in the corresponding assembly slot (81).

6. A lithium-ion battery constant temperature tray according to claim 5, characterized in that: Each of the assembly slots (81) is provided with an elastic buckle (82) for fixing at its opening, and there are multiple sets of elastic buckles (82).

7. A lithium-ion battery constant temperature tray according to claim 4, characterized in that: The outer frame (1) of the pallet is provided with three ventilation panels (9). One of the ventilation panels (9) is arranged opposite to the side wall panel (8), and the other two ventilation panels (9) are arranged on both sides of the side wall panel (8). The three ventilation panels (9) and the side wall panel (8) are arranged in sequence along the perimeter of the outer frame (1) of the pallet, and each ventilation panel (9) has several ventilation and heat dissipation holes (91) through it.

8. A lithium-ion battery constant temperature tray according to claim 1, characterized in that: The temperature sensing component (5) includes two temperature sensing probes (51), which are diagonally distributed on both sides of the outer frame (1) of the tray.

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