Battery vacuum drying experimental system
By setting up a vacuum chamber, heating source, and dehumidifier in the battery vacuum drying experimental system, and combining a vacuum pump and drying gas circulation, the problem of inaccurate moisture content testing caused by battery contact with air during the battery vacuum drying process was solved, achieving efficient drying and accurate testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN DACHENG INTELLIGENT EQUIP CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-07-07
Smart Images
Figure CN224470614U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of measuring device technology, and in particular to a battery vacuum drying experimental system. Background Technology
[0002] During battery production, vacuum drying is required to reduce the water content inside the cells. Currently, this is commonly achieved by repeatedly heating the battery and extracting moisture to lower the water content, before transferring the battery to a water content analyzer for testing. However, during this process, the battery comes into contact with air and absorbs moisture, leading to inaccurate water content test results and increasing product defect rates. Therefore, there is an urgent need for a vacuum drying experimental system for batteries to improve the accuracy of water content testing. Utility Model Content
[0003] The purpose of this invention is to provide a battery vacuum drying experimental system to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.
[0004] The solution to the technical problem of this utility model is:
[0005] A battery vacuum drying experimental system includes: a drying chamber with a drying cavity inside, an operation window provided in the drying chamber, and an operation glove placed at the operation window, the glove's opening being sealed to the operation window; a vacuum chamber disposed within the drying cavity, the vacuum chamber being connected to a vacuum pump, and a drying gas inlet provided on the vacuum chamber for receiving drying gas; a heating source disposed within the vacuum chamber for heating the interior of the vacuum chamber; a dehumidifier connected to the drying chamber for removing moisture from the drying cavity; and a moisture content analyzer disposed within the drying cavity.
[0006] This technical solution has at least the following beneficial effects: Both the vacuum chamber and the water content analyzer are located within the drying chamber formed by the drying room. The vacuum chamber can be connected to an external drying gas supply source. For example, the drying gas supply source can supply inert gas into the vacuum chamber through the drying gas inlet. When a vacuum drying test is required on the battery, the battery is placed inside the vacuum chamber, and a heating source heats the battery inside the vacuum chamber. Then, a vacuum pump evacuates the vacuum chamber to remove the water vapor evaporated from the battery. Drying gas is then supplied into the vacuum chamber through the drying gas inlet. This cycle of evacuation and gas supply is repeated multiple times, improving the battery drying efficiency. After the battery is dried, because the dehumidifier removes water vapor from the drying chamber, operators do not need to open the drying room. They can directly remove the battery from the vacuum chamber using operating gloves, maintaining the dry state inside the drying chamber and reducing the air moisture content. When the battery is transferred to the water content analyzer for testing, the absorption of water vapor from the air by the battery is effectively reduced, improving the accuracy of water content detection and thus improving production quality.
[0007] As a further improvement to the above technical solution, the present invention also includes a molecular pump, which is used to compress the air in the vacuum chamber and deliver it to the vacuum pump.
[0008] As a further improvement to the above technical solution, the air inlet of the vacuum pump is connected to the exhaust port of the molecular pump and the vacuum chamber respectively. A first control valve is provided at the connection between the vacuum pump and the vacuum chamber. The first port of the first control valve is connected to the vacuum chamber, and the second port of the first control valve is connected to the air inlet of the vacuum pump. A second control valve is provided at the connection between the vacuum pump and the molecular pump. The first port of the second control valve is connected to the exhaust port of the molecular pump, and the second port of the second control valve is connected to the air inlet of the vacuum pump. The air inlet of the molecular pump is connected to the vacuum chamber. A third control valve is provided at the connection between the molecular pump and the vacuum chamber. The first port of the third control valve is connected to the vacuum chamber, and the second port of the third control valve is connected to the air inlet of the molecular pump.
[0009] As a further improvement to the above technical solution, the molecular pump is located inside the drying chamber, and the vacuum pump is located outside the drying chamber.
[0010] As a further improvement to the above technical solution, the present invention also includes a drying gas tank, which is located inside the drying chamber and connected to the drying gas inlet.
[0011] As a further improvement to the above technical solution, a vacuum gauge is provided inside the vacuum chamber, which is used to detect the vacuum level inside the vacuum chamber.
[0012] As a further improvement to the above technical solution, a mass spectrometer is installed inside the vacuum chamber, which can detect the water content in the air inside the vacuum chamber.
[0013] As a further improvement to the above technical solution, a temperature sensor is installed inside the vacuum chamber, which is used to detect the temperature of the heating source.
[0014] As a further improvement to the above technical solution, the drying chamber is connected to a platform.
[0015] As a further improvement to the above technical solution, an opening is provided on one side of the drying chamber, and a door panel is hinged to the drying chamber on the side of the opening, and the door panel can open or close the opening.
[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.
[0018] Figure 1 This is an overall front view of the present invention.
[0019] Figure 2 This is an overall top view of the present invention, in which the top wall of the drying chamber is hidden.
[0020] In the attached diagram: 100-drying room, 110-operating gloves, 120-tabletop, 130-door panel, 200-vacuum chamber, 210-vacuum pump, 220-molecular pump, 300-dehumidifier. Detailed Implementation
[0021] The embodiments of this utility model 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 utility model, and should not be construed as limiting this utility model.
[0022] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.
[0023] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0024] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0025] Reference Figure 1 and Figure 2 A battery vacuum drying experimental system includes a drying chamber 100, a vacuum box 200, a heating source, a dehumidifier 300, and a water content analyzer. The drying chamber 100 contains a drying cavity. An operating glove 110 is installed in the drying chamber 100 at the operating window location. The glove 110's opening is sealed to the operating window. The glove 110's opening can directly fit against the operating window to achieve a seal, or a flexible pipe can be connected between the glove 110's opening and the operating container to prevent air leakage. Naturally, one side wall of the operating glove 110 in the drying chamber 100 is made of a transparent material. To facilitate observation and operation by staff in the drying chamber 100, at least two operating gloves 110 are provided for easy two-handed operation. A vacuum chamber 200 is located inside the drying chamber and is connected to a vacuum pump 210. The vacuum chamber 200 has a drying gas inlet for receiving drying gas. A heating source is located inside the vacuum chamber 200 to heat the interior of the chamber. Various heating sources are available, such as PTC heating elements, far-infrared heaters, or heating wires. A dehumidifier 300 is connected to the drying chamber 100 to remove moisture from the drying chamber. A moisture content analyzer is located inside the drying chamber.
[0026] As described above, both the vacuum chamber 200 and the water content analyzer are located within the drying chamber formed by the drying room 100. The vacuum chamber 200 can be connected to an external drying gas supply source. For example, the drying gas supply source can supply inert gas into the vacuum chamber 200 through the drying gas inlet. When a vacuum drying test is required for the battery, the battery is placed inside the vacuum chamber 200, and a heating source heats the battery inside the vacuum chamber 200. Then, the vacuum pump 210 evacuates the vacuum chamber 200 to remove the water vapor evaporated from the battery. Subsequently, drying gas is supplied into the vacuum chamber 200 through the drying gas inlet. By repeatedly evacuating and supplying air to the vacuum chamber 200, the drying efficiency of the battery can be improved. After the battery is dried, since the dehumidifier 300 removes moisture from the drying chamber, the operator does not need to open the drying chamber 100 to operate. The battery can be directly removed from the vacuum chamber 200 through the operating gloves 110, keeping the drying chamber dry and reducing the moisture content of the air in the drying chamber. When the battery is transferred to the water content tester for testing, it can effectively reduce the absorption of moisture from the air by the battery, improve the accuracy of water content detection of the battery, and thus improve production quality.
[0027] The dehumidifier 300 is used to remove moisture from the drying chamber. Naturally, there are pipes for air extraction and air supply connected between the dehumidifier 300 and the drying chamber. The dehumidifier 300 has various structural forms. For example, it can be a condenser dehumidifier 300, which uses a compressor to condense the moisture in the air into water droplets and then discharge them; or it can be a rotary dehumidifier 300, which uses moisture-absorbing materials such as silica gel and sponge to absorb the moisture in the air and then discharges the moisture by heating; or it can be a hybrid dehumidifier 300, which combines the functions of a condenser dehumidifier 300 and a rotary dehumidifier 300.
[0028] To further improve the vacuum level of the vacuum chamber 200, this invention also includes a molecular pump 220, which compresses the air inside the vacuum chamber 200 and delivers it to the vacuum pump 210. By combining the molecular pump 220 and the vacuum pump 210, the vacuum level inside the vacuum chamber 200 can be increased, thereby improving the overall system compatibility and further enhancing the efficiency of gas extraction from the vacuum chamber 200.
[0029] In the above embodiments, evacuating the vacuum chamber 200 can be done using only the vacuum pump 210, or by simultaneously using both the molecular pump 220 and the vacuum pump 210. In practical applications, both methods can be switched to achieve evacuation of the vacuum chamber 200. Specifically, the inlet of the vacuum pump 210 is connected to the outlet of the molecular pump 220 and the vacuum chamber 200, respectively. The two can be connected by pipelines or directly to each other. A first control valve is provided at the connection between the vacuum pump 210 and the vacuum chamber 200. The first port of the first control valve is connected to the vacuum chamber 200. A second control valve is provided at the connection between the vacuum pump 210 and the molecular pump 220. The first port of the second control valve is connected to the exhaust port of the molecular pump 220, and the second port of the second control valve is connected to the inlet of the vacuum pump 210. The inlet of the molecular pump 220 is connected to the vacuum chamber 200. The two can be connected by a pipeline or directly to each other. A third control valve is provided at the connection between the molecular pump 220 and the vacuum chamber 200. The first port of the third control valve is connected to the vacuum chamber 200, and the second port of the third control valve is connected to the inlet of the molecular pump 220. When it is necessary to evacuate the vacuum chamber 200, the first control valve is opened and the second and third control valves are closed. At this time, only the vacuum pump 210 is used to evacuate the vacuum chamber 200. When the vacuum chamber 200 is in a low vacuum state, the first control valve is closed and the second and third control valves are opened. At this time, the molecular pump 220 first compresses the air in the vacuum chamber 200 and sends it to the vacuum pump 210. Then, the vacuum pump 210 further sends the air out, thereby increasing the vacuum degree of the vacuum chamber 200. This can improve the efficiency and vacuum degree of evacuating the vacuum chamber 200 and better control the working energy consumption.
[0030] In the above embodiments, both the molecular pump 220 and the vacuum pump 210 can be located inside the drying chamber. In this case, an exhaust port needs to be provided on the drying chamber 100 so that the vacuum pump 210 can send the airflow outward. Alternatively, both the molecular pump 220 and the vacuum pump 210 can be located outside the drying chamber. In this case, a longer pipeline needs to be installed inside the drying chamber to connect the molecular pump 220 and the vacuum pump 210. To make the overall structure more compact, in this embodiment, the molecular pump 220 is located inside the drying chamber, and the vacuum pump 210 is located outside the drying chamber. The molecular pump 220 is located inside the drying chamber, reducing exposure and providing better protection for the molecular pump 220. It also reduces the number of pipeline connections required for the molecular pump 220. The vacuum pump 210 is located outside the drying chamber, which facilitates the direct discharge of the extracted air, making the overall structure more compact.
[0031] The drying gas supplied to the vacuum chamber 200 can be provided by an external gas supply source, or the battery vacuum drying experimental system itself can include a container for storing drying gas. Specifically, this invention also includes a drying gas tank, which is located inside the drying chamber 100 and connected to the drying gas inlet. The two can be connected via pipelines or directly to each other. Before operation, the drying gas tank is used to store drying gas. It can be pre-stored internally or used for intermediate storage. In practical applications, the drying gas tank can also be directly removed from the drying chamber 100, so that when the drying gas in one drying gas tank is used up, it can be quickly replenished by replacing it with another drying gas tank.
[0032] To facilitate monitoring of the vacuum level within the vacuum chamber 200, a vacuum gauge is installed inside the vacuum chamber 200 in this embodiment. The vacuum gauge is used to detect the vacuum level within the vacuum chamber 200. During operation, the vacuum gauge can detect the air extraction status within the vacuum chamber 200 in real time, thereby facilitating adjustments to the workflow. For example, it can determine whether the vacuum chamber 200 is in a low vacuum state, thereby controlling whether the molecular pump 220 participates in evacuating the vacuum chamber 200.
[0033] Since repeated evacuation and gas supply to the vacuum chamber 200 are required to dry the battery, a mass spectrometer is installed inside the vacuum chamber 200 in this embodiment to facilitate monitoring of the battery drying status. The mass spectrometer can detect the water content in the air inside the vacuum chamber 200. The mass spectrometer can monitor changes in the water content within the vacuum chamber. By observing these changes, it can be determined whether the limit for the number of vacuum cycles has been reached. That is, if further cycles are continued, the decrease in water content within the vacuum chamber will be very limited, indicating that the vacuum chamber 200 is approaching its vacuuming limit. This avoids excessive and ineffective vacuuming cycles.
[0034] In practical applications, the heating source itself can be equipped with a sensor to detect the heating temperature of the product, or a temperature sensor can be installed inside the vacuum chamber 200. This temperature sensor is used to detect the temperature of the heating source. This allows for more precise temperature control, thereby improving the reliability of the system.
[0035] When conducting vacuum drying experiments on batteries, it is usually necessary to perform vacuum drying experiments on multiple batteries. To reduce the number of times the drying chamber needs to be opened, multiple batteries can be loaded into the drying chamber before starting the experiment. Therefore, in this embodiment, the drying chamber is connected to a platform 120. Before the experiment is required, multiple batteries can be placed on the platform 120 for temporary placement. After the experiment is completed, the batteries that have completed the experiment can also be placed on the platform 120, improving the convenience and efficiency of the entire experimental operation.
[0036] In some embodiments, an opening is provided on one side of the drying chamber 100, and a door panel 130 is hinged to the drying chamber 100 on the side of the opening. The door panel 130 can open or close the opening. Opening or closing the opening by rotating the door panel 130 on the drying chamber 100 facilitates the placement and removal of batteries and the inspection and maintenance of internal structural components. In practical applications, the door panel 130 can be made of a transparent material and has an installation opening. In this case, an operating glove 110 can be installed at the installation opening of the door panel 130. The operating glove 110 can be removed and installed from the installation opening, thus facilitating maintenance and improving ease of maintenance. Naturally, the side walls of the drying chamber 100, excluding the door panel 130, can also be made of a transparent material, allowing workers to observe the interior from different angles.
[0037] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.
Claims
1. A battery vacuum drying experimental system, characterized in that: include: A drying chamber (100) has a drying cavity inside. The drying chamber (100) is provided with an operation window. An operation glove (110) is provided in the drying chamber (100) at the position of the operation window. The glove opening of the operation glove (110) is sealed to the operation window. A vacuum chamber (200) is disposed inside the drying chamber. The vacuum chamber (200) is connected to a vacuum pump (210). A drying gas inlet is provided on the vacuum chamber (200) for receiving drying gas. A heating source is disposed inside the vacuum chamber (200), and the heating source is used to heat the interior of the vacuum chamber (200); A dehumidifier (300) is connected to the drying chamber (100), and the dehumidifier (300) is used to remove moisture from the drying chamber; A water content analyzer is installed inside the drying chamber.
2. The battery vacuum drying experimental system according to claim 1, characterized in that: It also includes a molecular pump (220) for compressing air in the vacuum chamber (200) and delivering it to the vacuum pump (210).
3. The battery vacuum drying experimental system according to claim 2, characterized in that: The air inlet of the vacuum pump (210) is connected to the exhaust port of the molecular pump (220) and the vacuum chamber (200). A first control valve is provided at the connection between the vacuum pump (210) and the vacuum chamber (200). The first port of the first control valve is connected to the vacuum chamber (200), and the second port of the first control valve is connected to the air inlet of the vacuum pump (210). A second control valve is provided at the connection between the vacuum pump (210) and the molecular pump (220). The first port of the second control valve is connected to the exhaust port of the molecular pump (220), the second port of the second control valve is connected to the inlet of the vacuum pump (210), the inlet of the molecular pump (220) is connected to the vacuum chamber (200), and a third control valve is provided at the connection between the molecular pump (220) and the vacuum chamber (200). The first port of the third control valve is connected to the vacuum chamber (200), and the second port of the third control valve is connected to the inlet of the molecular pump (220).
4. The battery vacuum drying experimental system according to claim 2, characterized in that: The molecular pump (220) is located inside the drying chamber, and the vacuum pump (210) is located outside the drying chamber.
5. The battery vacuum drying experimental system according to claim 1, characterized in that: It also includes a drying gas tank, which is located inside the drying chamber (100) and connected to the drying gas inlet.
6. The battery vacuum drying experimental system according to claim 1, characterized in that: A vacuum gauge is installed inside the vacuum chamber (200) to detect the vacuum level inside the vacuum chamber (200).
7. The battery vacuum drying experimental system according to claim 1, characterized in that: A mass spectrometer is installed inside the vacuum chamber (200), which can detect the water content in the air inside the vacuum chamber (200).
8. The battery vacuum drying experimental system according to claim 1, characterized in that: A temperature sensor is installed inside the vacuum chamber (200) to detect the temperature of the heating source.
9. The battery vacuum drying experimental system according to claim 1, characterized in that: The drying chamber is connected to a platform (120).
10. The battery vacuum drying experimental system according to claim 1, characterized in that: The drying chamber (100) has an opening on one side, and a door panel (130) is hinged to the drying chamber (100) on the side of the opening. The door panel (130) can open or close the opening.