Battery cell dehumidification equipment
By using a combination of liquid heat transfer medium heating and an air extraction device, the problem of low drying efficiency of battery cells was solved, achieving rapid dehumidification.
Patent Information
- Application Number
- CN202422471326.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-10-11
AI Technical Summary
Existing technologies have low cell drying efficiency, and the slow heating rate during hot air drying results in low dehumidification efficiency.
The battery cell is heated using a liquid heat transfer medium. The battery cell is supported and positioned by a support device, and water vapor is extracted using a vacuum device. Combined with the heating device, the temperature of the liquid heat transfer medium is quickly increased to improve heat transfer efficiency.
It improves the heating and dehumidification efficiency of the battery cell, ensuring that the moisture inside the battery cell is quickly vaporized and discharged, thus enhancing the dehumidification effect of the battery cell.
Smart Images
Figure CN223623251U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery manufacturing and processing technology, and in particular to a cell dehumidification device. Background Technology
[0002] Cell drying is one of the important processes in battery (sodium-ion batteries and lithium-ion batteries, etc.) production. Through the cell drying process, moisture on the electrodes and diaphragms inside the cell can be discharged to the outside of the cell, thereby achieving dehumidification and controlling the water content inside the cell, thus avoiding the impact on cell performance due to excessive water content.
[0003] Currently, hot air drying is commonly used to dry battery cells. However, the temperature rises slowly during hot air drying, resulting in low drying efficiency. Utility Model Content
[0004] The purpose of this application is to overcome the deficiencies of the prior art and provide a battery cell dehumidification device to solve the problems in the prior art.
[0005] To address the above problems, this application provides a battery cell dehumidification device including:
[0006] A container has an internal cavity containing a liquid thermally conductive medium for immersing a battery cell within it. The battery cell is placed vertically, and the cavity contains a support device for supporting and positioning the battery cell.
[0007] A heating device is used to heat the liquid heat-conducting medium so that the liquid heat-conducting medium reaches a preset temperature;
[0008] A vacuum device is used to extract the gas discharged from inside the battery cell.
[0009] In one possible implementation, the support device includes a plurality of support modules arranged in a ring, wherein each of the support modules abuts against the outer surface of the battery cell.
[0010] In one possible implementation, the support module includes a support column disposed at the bottom of the receiving cavity.
[0011] In one possible implementation, the support module includes an arc-shaped support plate; the support plate includes a first side and a second side disposed opposite to each other; the first side is used to abut against the outer surface of the battery cell; the second side is connected to an elastic element, the elastic element being connected to the side wall of the receiving cavity.
[0012] In one possible implementation, a temperature detection module is provided inside the container, which is used to detect the temperature of the liquid heat-conducting medium; wherein the preset temperature is 80-95°C.
[0013] In one possible implementation, the heating device includes an electric heating module, wherein the electric heating module is placed in the liquid heat-conducting medium.
[0014] In one possible implementation, the container portion is located within a sealed heating chamber;
[0015] The heating chamber is provided with an air inlet, and the heating device includes a steam generator for generating high-temperature steam, wherein the exhaust end of the steam generator is connected to the air inlet.
[0016] In one possible implementation, the depth of the liquid thermally conductive medium is less than the height of the battery cell; wherein the liquid injection port of the battery cell is located above the liquid thermally conductive medium.
[0017] In one possible implementation, the liquid heat-conducting medium includes heat-conducting oil.
[0018] In one possible implementation, the air extraction device includes a vacuum pump, wherein the air extraction port of the vacuum pump is connected to the liquid injection port of the battery cell.
[0019] The beneficial effects of this application include:
[0020] The battery cell dehumidification device proposed in this application includes a container, a heating device, and an air extraction device. The container contains a liquid heat-conducting medium, in which the battery cell is placed vertically and immersed. A support device is provided inside the container to support and position the battery cell, thereby preventing it from tipping over and avoiding the liquid heat-conducting medium from flowing into the battery cell.
[0021] When dehumidifying the battery cell, the heating device heats the liquid heat-conducting medium, which then transfers heat to the battery cell. The moisture in the battery cell is vaporized by the heat and converted into water vapor. The water vapor inside the battery cell is then extracted by the air extraction device, thereby achieving the purpose of dehumidifying the battery cell.
[0022] Liquid heat transfer media have higher thermal conductivity (compared to air). When the heating device is working, the temperature of the liquid heat transfer media rises rapidly and quickly transfers heat to the battery cells immersed in it, thereby improving the heating efficiency of the battery cells and thus improving the dehumidification efficiency of the battery cells. Attached Figure Description
[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 A schematic diagram of a battery cell dehumidification device is shown.
[0025] Figure 2 A schematic diagram showing a battery cell placed inside a container is shown;
[0026] Figure 3 A schematic diagram of the container in Embodiment 1 is shown;
[0027] Figure 4 It shows Figure 3 Top view of the container;
[0028] Figure 5 A schematic diagram of the container in Embodiment 2 is shown;
[0029] Figure 6 It shows Figure 5 Top view of the container;
[0030] Figure 7 A schematic diagram showing the connection between the heating device and the container in Embodiment 3 is shown.
[0031] Explanation of key component symbols:
[0032] 100-Container; 110-Support column; 120-Support plate; 121-First side; 122-Second side; 130-Elastic element; 200-Heating device; 210-Heating chamber; 211-Air inlet; 212-Air outlet; 220-Condenser; 230-Water storage tank; 240-Water pump; 250-Steam generator; 300-Evacuation device; 400-Battery cell; 410-Liquid injection port. Detailed Implementation
[0033] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0034] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0035] Example 1
[0036] See Figure 1 In this embodiment, a battery cell dehumidification device is proposed, comprising:
[0037] The container 100 has an internal cavity containing a liquid heat-conducting medium, which is used to immerse the power core 400 within it.
[0038] Heating device 200 is used to heat liquid heat transfer medium so that the liquid heat transfer medium reaches a preset temperature;
[0039] The air extraction device 300 is used to extract the gas discharged from inside the battery cell 400.
[0040] In this embodiment, the battery cell dehumidification device includes a container 100, a heating device 200, and an air extraction device 300. The container 100 contains a liquid heat-conducting medium. The battery cell 400 is placed vertically and immersed in the liquid heat-conducting medium, and the liquid injection port 410 of the battery cell 400 is located above the liquid surface of the liquid heat-conducting medium.
[0041] The battery cell 400 is placed vertically, and a support device is provided inside the receiving cavity to support and position the battery cell 400. When the battery cell 400 is placed in the liquid heat-conducting medium within the container 100, it is subject to buoyancy, which can cause it to become unstable. In this embodiment, the receiving cavity is equipped with a support device, which supports and positions the battery cell 400, ensuring its stability and preventing it from tipping over. This prevents the liquid heat-conducting medium from flowing into the battery cell 400 through the injection port 410.
[0042] When dehumidifying the battery cell 400, the heating device 200 heats the liquid heat-conducting medium, transferring heat to the battery cell 400 through the liquid heat-conducting medium; the moisture in the battery cell 400 is vaporized by the heat and converted into water vapor; the water vapor inside the battery cell 400 is extracted by the vacuum pump 300, thereby achieving the purpose of dehumidifying the battery cell 400. In this embodiment, the vacuum pump 300 includes a vacuum pump, and the vacuum pump port is connected to the liquid injection port 410 of the battery cell 400. In actual assembly, the vacuum pump port of the vacuum pump 300 can be connected to the liquid injection port 410 of the battery cell 400 through an air pipe (flexible or rigid pipe).
[0043] Compared to air, liquid heat transfer media have higher thermal conductivity. When the heating device 200 is working, the temperature of the liquid heat transfer media rises rapidly, quickly transferring heat to the battery cell 400 immersed in it. This improves the heating efficiency of the battery cell 400, thereby enhancing its dehumidification efficiency. The liquid heat transfer media includes heat transfer oil. Heat transfer oil has advantages such as high heat transfer efficiency and high thermal stability.
[0044] The support device includes multiple ring-shaped support modules, each of which abuts against the outer surface of the battery cell 400. No physical or chemical reaction occurs between the support modules and the heat transfer oil.
[0045] like Figures 2-4 As shown, in this embodiment, the support module includes a support column 110, which is disposed at the bottom of the receiving cavity. For ease of observation, Figure 3 The support column 110 is shown in perspective, and is represented by a dashed line.
[0046] In some other embodiments, the support module further includes an elastic sleeve, which is fitted onto the support post 110. The elastic sleeve is in direct contact with the outer surface of the battery cell 400, thereby protecting the battery cell 400 and also making the contact between the support module and the battery cell 400 tighter. The elastic sleeve may be made of elastic materials such as silicone or rubber.
[0047] In this embodiment, a temperature detection module is provided inside the container 100. The temperature detection module is used to detect the temperature of the liquid heat-conducting medium. The temperature detection module includes a temperature sensor.
[0048] During the dehumidification process of the battery cell 400, the heating device 200 heats the liquid heat-conducting medium. The temperature of the liquid heat-conducting medium is monitored in real time by a temperature detection module, thereby ensuring that the temperature of the liquid heat-conducting medium reaches and is maintained at a preset temperature. The preset temperature is 80–95°C.
[0049] In this embodiment, the heating device 200 includes an electric heating module, which is placed in a liquid heat-conducting medium. The electric heating module includes an electric heating tube, an electric heating element, etc.
[0050] In this embodiment, the depth of the liquid thermally conductive medium is less than the height of the battery cell 400. The liquid injection port 410 of the battery cell 400 is located above the liquid thermally conductive medium. Thus, when the battery cell 400 is placed vertically inside the container 100, it is ensured that the liquid injection port 410 at the top of the battery cell 400 is above the liquid thermally conductive medium, thereby preventing the liquid thermally conductive medium from entering the interior of the battery cell 400 through the injection port 410.
[0051] Example 2
[0052] The difference between this embodiment and Embodiment 1 lies in the support module.
[0053] like Figure 5 and Figure 6 As shown, in this embodiment, the support module includes an arc-shaped support plate 120, which includes a first side 121 and a second side 122 disposed opposite to each other. The first side 121 is used to abut against the outer surface of the battery cell 400, and the second side 122 is connected to an elastic member 130, which is connected to the side wall of the receiving cavity.
[0054] The elastic element 130 provides elastic force, ensuring that the first side 121 of the support plate 120 is tightly fitted against the outer surface of the battery cell 400, thereby supporting and positioning the battery cell 400. Because the elastic element 130 is elastic, the position of the support plate 120 can be moved, allowing the support device to accommodate battery cells 400 of different diameters. The elastic element 130 can be a spring or similar material.
[0055] Example 3
[0056] The difference between this embodiment and Embodiment 1 lies in the heating device.
[0057] like Figure 7 As shown, in this embodiment, container 100 is partially located within a sealed heating chamber 210. The heating chamber 210 has an air inlet 211. The heating device includes a steam generator 250 for generating high-temperature steam, wherein the exhaust end of the steam generator 250 is connected to the air inlet 211. The structure of the steam generator 250 can refer to existing designs and will not be described in detail here.
[0058] The heating chamber 210 is also provided with an air outlet 212, which is used to discharge steam, thereby realizing the circulation of steam in the heating chamber 210. Except for the air inlet 211 and the air outlet 212, the other parts of the heating chamber 210 are in a sealed state. In particular, the part where the container 100 is connected to the heating chamber 210 is also sealed.
[0059] In this embodiment, the heating device further includes a condenser 220, a water storage tank 230, and a water pump 240, wherein the steam outlet 212, the condenser 220, the water storage tank 230, the water pump 240, and the steam generator 250 are connected in sequence.
[0060] Pump 240 transports water from storage tank 230 to steam generator 250. Steam generator 250 heats the water and generates high-temperature steam. The high-temperature steam enters heating chamber 210 through inlet 211, where heat energy is transferred to container 100, and then from container 100 to the internal liquid heat transfer medium, thus achieving indirect heating of the liquid heat transfer medium. Steam in heating chamber 210 is discharged outside through outlet 212 and flows into condenser 220, where it is converted into water under the action of condenser 220. The water flows into storage tank 230, thus achieving circulation. Container 100 can be made of corrosion-resistant and high thermal conductivity materials, such as stainless steel.
[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0062] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A battery cell dehumidification device, characterized in that, include: A container has an internal cavity containing a liquid thermally conductive medium for immersing a battery cell within it. The battery cell is placed vertically, and the cavity contains a support device for supporting and positioning the battery cell. A heating device is used to heat the liquid heat-conducting medium so that the liquid heat-conducting medium reaches a preset temperature; A vacuum device is used to extract the gas discharged from inside the battery cell; The liquid heat-conducting medium includes heat-conducting oil.
2. The cell dehumidification device according to claim 1, characterized in that, The support device includes multiple support modules arranged in a ring, wherein each support module abuts against the outer surface of the battery cell.
3. The cell dehumidification device according to claim 2, characterized in that, The support module includes a support column, which is disposed at the bottom of the receiving cavity.
4. The cell dehumidification device according to claim 2, characterized in that, The support module includes an arc-shaped support plate; the support plate includes a first side and a second side disposed opposite to each other; the first side is used to abut against the outer surface of the battery cell; the second side is connected to an elastic element, which is connected to the side wall of the receiving cavity.
5. The cell dehumidification device according to claim 1, characterized in that, The container is equipped with a temperature detection module, which is used to detect the temperature of the liquid heat-conducting medium; wherein, the preset temperature is 80-95℃.
6. The cell dehumidification device according to claim 1, characterized in that, The heating device includes an electric heating module, wherein the electric heating module is placed in the liquid heat-conducting medium.
7. The cell dehumidification device according to claim 1, characterized in that, The container portion is located within a sealed heating chamber; The heating chamber is provided with an air inlet, and the heating device includes a steam generator for generating high-temperature steam, wherein the exhaust end of the steam generator is connected to the air inlet.
8. The cell dehumidification device according to claim 1, characterized in that, The depth of the liquid thermally conductive medium is less than the height of the battery cell; wherein the liquid injection port of the battery cell is located above the liquid thermally conductive medium.
9. The cell dehumidification device according to claim 1, characterized in that, The air extraction device includes a vacuum pump, wherein the air extraction port of the vacuum pump is connected to the liquid injection port of the battery cell.