Battery slurry storage device

Abstract

The utility model discloses a battery slurry storage device, and belongs to the technical field of battery processing. The battery slurry storage device comprises a slurry barrel, a liquid level detection module, a liquid pump and an auxiliary switch module, wherein the slurry barrel is provided with a liquid inlet channel; the liquid level detection module is arranged in the slurry barrel, and the liquid level detection module is used for detecting the current liquid level of the battery slurry in the slurry barrel; the liquid pump is arranged at an inlet of the liquid inlet channel and is in signal connection with the liquid level detection module; the auxiliary switch module comprises a floating part, a connecting rod assembly and a plugging part, the plugging part is connected with the floating part through the connecting rod assembly, and the floating part can ascend and descend along with ascending and descending of the liquid level in the slurry barrel so as to drive the plugging part to be switched between the first position and the second position. The battery slurry storage device can accurately detect the liquid level of the battery slurry in the slurry barrel, so that the battery slurry in the slurry barrel is within a preset range.

Description

Technical Field

[0001] This utility model relates to the field of battery processing technology, specifically to a battery slurry storage device. Background Technology

[0002] Lithium-ion batteries are widely used in mobile electronic devices such as Bluetooth headsets, mobile phones, laptops, tablets, and cameras, as well as portable power banks, due to their advantages such as light weight and good safety performance.

[0003] The electrode coating process is a critical step in lithium-ion battery production. The quality and consistency of the coating directly affect the capacity, safety, and processing cost of the lithium-ion battery. The battery slurry storage device is mainly used to store the slurry required for electrode coating and can transport the corresponding slurry to the coating die or coating rollers via a conveying system to ensure that the slurry is uniformly and continuously coated onto the battery electrodes.

[0004] Battery slurry storage devices in related technologies typically include a slurry tank and an ultrasonic level gauge. The ultrasonic level gauge is used to detect the current level of the battery slurry in the tank in real time, stopping the supply of battery slurry to the tank when the current level reaches a preset maximum level, and replenishing the tank in a timely manner when the current level reaches a preset minimum level. This avoids poor coating uniformity caused by excessively high or low battery slurry levels. The detection principle of the ultrasonic level gauge is as follows: the transducer of the ultrasonic level gauge emits ultrasonic pulses of a certain frequency. The ultrasonic pulses propagate in the liquid and are reflected upon encountering the liquid surface. The reflected sound wave signal is received by the same transducer and converted into an electrical signal, thereby obtaining the current liquid level. However, the ultrasonic level gauge is easily covered by battery slurry splashes in the tank, preventing the sound waves from propagating normally in the liquid and failing to form an effective echo signal. In severe cases, this can lead to the failure of both the transmitting and receiving functions, causing the ultrasonic level gauge to malfunction and affecting the coating yield of the battery electrodes.

[0005] Therefore, there is an urgent need for a battery slurry storage device to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to solve or at least alleviate some or all of the aforementioned problems. Therefore, the purpose of this invention is to provide a battery slurry storage device that can accurately detect the current level of the battery slurry in the slurry tank, ensuring that the battery slurry in the tank remains within a preset range, thereby guaranteeing the coating yield of the battery electrodes.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A battery slurry storage device, comprising:

[0009] A slurry tank containing battery slurry, the slurry tank having a liquid inlet channel;

[0010] A liquid level detection module is installed inside the slurry tank, and the liquid level detection module is used to detect the current liquid level of the battery slurry in the slurry tank;

[0011] A liquid pump is installed at the inlet of the liquid inlet channel, and the liquid pump is signal-connected to the liquid level detection module;

[0012] The auxiliary switch module includes a floating component, a connecting rod assembly, and a sealing component. The floating component is connected to the sealing component through the connecting rod assembly. The floating component can rise and fall with the rise and fall of the liquid level in the slurry tank, thereby driving the sealing component to switch between a first position that connects to the liquid inlet channel and a second position that cuts off the liquid inlet channel.

[0013] As a preferred embodiment of the battery slurry storage device provided by this utility model, the slurry tank includes:

[0014] A barrel containing battery slurry, with one end of the barrel open.

[0015] A bucket lid is provided on the opening of the bucket body, and the bucket lid is provided with a clearance hole for the connecting rod assembly to pass through;

[0016] The liquid inlet pipe is connected to the top of the bucket lid, and the liquid inlet channel is opened inside the liquid inlet pipe.

[0017] As a preferred embodiment of the battery slurry storage device provided by this utility model, the liquid inlet channel includes a first channel and a second channel arranged at an angle, and a connecting port that can connect the two is provided between the first channel and the second channel, and the outlet of the second channel is connected to the interior of the slurry tank.

[0018] When the sealing element is in the second position, the sealing element can seal the communication port.

[0019] As a preferred embodiment of the battery slurry storage device provided by this utility model, the sealing component includes:

[0020] A sliding rod is partially slidably inserted through the liquid inlet channel, and one end of the sliding rod extending out of the liquid inlet channel is fixedly connected to the connecting rod assembly;

[0021] A sealing part is connected to one end of the sliding rod located inside the liquid inlet channel, and can cooperate with the connecting port to cut off the liquid inlet channel.

[0022] As a preferred embodiment of the battery slurry storage device provided by this utility model, the connecting rod assembly includes a first connecting rod and a second connecting rod that are arranged at an angle and connected to each other. The end of the first connecting rod opposite to the second connecting rod is connected to the floating member, and the end of the second connecting rod opposite to the first connecting rod is fixedly connected to the sealing member.

[0023] As a preferred embodiment of the battery slurry storage device provided by this utility model, the first connecting rod and the second connecting rod are connected by fasteners, and the included angle between them is >90°.

[0024] As a preferred embodiment of the battery slurry storage device provided by this utility model, a hinge frame is also provided on the side wall of the liquid inlet pipe, and the second connecting rod is hinged to the hinge frame.

[0025] As a preferred embodiment of the battery slurry storage device provided by this utility model, the floating element is spherical or cylindrical in shape.

[0026] As a preferred embodiment of the battery slurry storage device provided by this utility model, the liquid level detection module is an ultrasonic liquid level gauge.

[0027] As a preferred embodiment of the battery slurry storage device provided by this utility model, when the current liquid level detected by the liquid level detection module reaches the first preset maximum liquid level, the liquid pump stops pumping battery slurry into the slurry tank; when the sealing member is in the second position, the liquid level of the battery slurry in the slurry tank is the second preset maximum liquid level; wherein, the second preset maximum liquid level is greater than the first preset maximum liquid level.

[0028] The beneficial effects of this utility model are as follows:

[0029] This utility model provides a battery slurry storage device. The slurry tank is used to store battery slurry and to supply it to the coating die during the battery electrode coating process. By using a liquid level detection module and an auxiliary switch module in conjunction, a double safety mechanism is provided. When the liquid level detection module, the pump, and the connecting circuit between them are functioning normally, if the liquid level detection module detects that the current liquid level in the slurry tank is lower than a preset minimum level, the pump starts to replenish the slurry tank with battery slurry. If the liquid level detection module detects that the current liquid level in the slurry tank reaches a first preset maximum level, the pump stops working to stop pumping battery slurry into the slurry tank. This design prevents the slurry tank from overflowing. In the event of a malfunction in the level detection module or a fault in the connection circuit between the level detection module and the pump, the floating component can rise and fall with the level in the slurry tank, thereby switching the sealing component between a first position connecting the inlet channel and a second position cutting off the inlet channel. This allows for replenishment or cessation of slurry feeding into the tank. This configuration ensures that the battery slurry in the tank remains within the preset level range, preventing poor coating results due to excessively high or low slurry levels, thus guaranteeing the coating quality of the battery electrodes. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the battery slurry storage device provided in an embodiment of the present invention;

[0032] Figure 2 This is a top view of the battery slurry storage device provided in this embodiment of the utility model;

[0033] Figure 3 yes Figure 2 Schematic diagram of cross-section at AA.

[0034] Figure label:

[0035] 100. Slurry tank; 110. Tank body; 120. Tank lid; 121. Clearance hole; 130. Liquid inlet pipe; 131. Liquid inlet channel; 1311. First channel; 1312. Second channel; 1313. Connecting port; 140. Hinge frame;

[0036] 200, Auxiliary switch module; 210, Floating component; 220, Linkage assembly; 221, First link; 222, Second link; 230, Sealing component; 231, Sliding rod; 232, Sealing part. Detailed Implementation

[0037] Before explaining any embodiment of the present invention in detail, it should be understood that the present invention is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0038] In this invention, the terms "comprising," "including," "having," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0039] In this invention, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in this invention, the character " / " generally indicates that the preceding and following related objects have an "and / or" relationship.

[0040] In this invention, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0041] In this invention, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the value and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0042] In this invention, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can be performed by one part, one component, or a combination of multiple parts.

[0043] In this utility model, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this utility model. Furthermore, in the context, it should be understood that when one element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent the direct orientation but can also be understood as the lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0044] Figure 1 A schematic diagram of the battery slurry storage device provided in this embodiment is shown. Figure 2 A top view of the battery slurry storage device provided in this embodiment is shown. Figure 3 It shows Figure 2 A cross-sectional view at point AA. (See diagram.) Figures 1-3As shown, this embodiment provides a battery slurry storage device, which includes a slurry tank 100, a liquid level detection module (not shown in the figure), a liquid pump (not shown in the figure), and an auxiliary switch module 200. The slurry tank 100 is used to hold battery slurry and has an inlet channel 131. The liquid level detection module is disposed inside the slurry tank 100 and is used to detect the current liquid level of the battery slurry in the slurry tank 100. The liquid pump is disposed at the inlet of the inlet channel 131 and is signal-connected to the liquid level detection module. The auxiliary switch module 200 includes a floating element 210, a connecting rod assembly 220, and a sealing element 230. The floating element 210 is connected to the sealing element 230 through the connecting rod assembly 220. The floating element 210 can rise and fall with the rise and fall of the liquid level in the slurry tank 100 to drive the sealing element 230 to switch between a first position that cuts off the inlet channel 131 and a second position that connects the inlet channel 131.

[0045] The battery slurry storage device provided in this embodiment includes a slurry tank 100 for storing battery slurry and supplying it to the coating die head during the battery electrode coating process. The liquid level detection module and auxiliary switch module 200 work together to provide double protection. When the liquid level detection module, the pump, and the connecting circuit between them are functioning normally, if the liquid level detection module detects that the current liquid level in the slurry tank 100 is lower than a preset minimum liquid level, the pump starts to replenish the battery slurry tank 100. If the liquid level detection module detects that the current liquid level in the slurry tank 100 reaches a first preset maximum liquid level, the pump stops working to stop pumping battery slurry into the slurry tank 100, thus preventing the slurry tank from overflowing. In the event of overflow in slurry tank 100; if the liquid level detection module fails, or if the connection circuit between the liquid level detection module and the liquid pump malfunctions, the floating component 210 can also rise and fall with the liquid level in the slurry tank 100, thereby driving the sealing component 230 to switch between the first position connecting the liquid inlet channel 131 and the second position cutting off the liquid inlet channel 131, thereby realizing the liquid replenishment operation in the slurry tank 100 or stopping the liquid inlet operation in the slurry tank 100; the above setting method can ensure that the battery slurry in the slurry tank 100 is always within the preset liquid level range, thereby avoiding the situation where the coating effect is poor due to the liquid level of the battery slurry in the slurry tank 100 being too high or too low, thereby ensuring the coating quality of the battery electrode sheet.

[0046] It should be noted that in this embodiment, the liquid level detection module is an ultrasonic level gauge, which has the advantages of simple structure, high measurement accuracy, safety and reliability, and low cost. Ultrasonic level gauges are commonly used liquid level detection devices in the field, and the specific structure and detection principle of ultrasonic level gauges will not be described in detail in this embodiment.

[0047] like Figure 1 and Figure 3As shown, the slurry tank 100 includes a tank body 110 and a tank lid 120. The tank body 110 is used to hold battery slurry, and the tank lid 120 is placed over the opening of the tank body 110 to prevent the battery slurry inside from being contaminated due to prolonged exposure of the tank body 110.

[0048] Furthermore, the slurry tank 100 also includes an inlet pipe 130 and a hinge frame 140. The inlet pipe 130 is connected to the top of the tank cover 120, and an inlet channel 131 is formed inside the inlet pipe 130. The hinge frame 140 is disposed on the side wall of the inlet pipe 130, and the connecting rod assembly 220 is hinged to the hinge frame 140. Specifically, the inlet of the inlet channel 131 is connected to the battery slurry supply device, and the outlet of the inlet channel 131 is connected to the interior of the tank body 110. A liquid pump is disposed between the inlet of the inlet pipe 130 and the battery slurry supply device to pump the battery slurry in the battery slurry supply device into the tank body 110 through the inlet pipe 130. Optionally, the tank cover 120 is provided with a clearance hole 121 for the connecting rod assembly 220 to pass through, so as to facilitate the installation of the auxiliary switch module 200.

[0049] Optionally, the liquid inlet channel 131 includes a first channel 1311 and a second channel 1312 arranged at an angle, and a connecting port 1313 connecting the first channel 1311 and the second channel 1312 is also provided. The outlet of the second channel 1312 is connected to the interior of the tank 110. When the sealing member 230 is in the second position, the sealing member 230 can seal the connecting port 1313. When the sealing member 230 is in the first position, there is a gap between the sealing member 230 and the connecting port 1313, so that the battery slurry in the first channel 1311 can flow into the slurry tank 100 after passing through the connecting port 1313 and the second channel 1312 in sequence.

[0050] Optionally, the sealing component 230 includes a sliding rod 231 and a sealing part 232. The sliding rod 231 partially slides through the liquid inlet channel 131, and one end of the sliding rod 231 extending out of the liquid inlet channel 131 is fixedly connected to the connecting rod assembly 220. The sealing part 232 is connected to one end of the sliding rod 231 located inside the liquid inlet channel 131 and can cooperate with the connecting port 1313 to cut off the liquid inlet channel 131. By setting the sliding rod 231, its fixed connection with the connecting rod assembly 220 can be achieved. When the floating component 210 floats with the liquid surface, the sliding rod 231 can be driven to reciprocate axially along the liquid inlet channel 131 through the connecting rod assembly 220. By setting the sealing part 232, the sealing effect at the connecting port 1313 can be guaranteed when the sealing component 230 is in the second position, preventing battery slurry from flowing from the liquid inlet channel 131 into the slurry tank 100 when the battery slurry in the slurry tank 100 is at the second preset maximum liquid level. In this embodiment, the sealing part 232 is a rubber sealing gasket, which has a good sealing effect, is easy to obtain materials, and has a low cost.

[0051] like Figure 3 As shown, the linkage assembly 220 includes a first linkage 221 and a second linkage 222 that are angled together and connected to each other. The end of the first linkage 221 facing away from the second linkage 222 is connected to the floating member 210, and the end of the second linkage 222 facing away from the first linkage 221 is fixedly connected to the sealing member 230. Specifically, the sealing member 230 is a portion of the sliding rod 231 that extends out of the liquid inlet channel 131 and is fixedly connected. The first linkage 221 and the second linkage 222 are fixedly connected, and the included angle between them remains unchanged and is >90°. Limiting the included angle between the two to >90° ensures that when the liquid level drops, the first connecting rod 221 drives the second connecting rod 222 to rotate relative to the hinge frame 140 along the first direction, thereby driving the sliding rod 231 to slide in the liquid inlet channel 131 along the first direction, and then driving the sealing member 230 to slide in the first direction, so that it is in the first connected position, and replenishing the slurry tank 100. When the liquid level rises, the first connecting rod 221 drives the second connecting rod 222 to rotate relative to the hinge frame 140 along the opposite direction, thereby driving the sliding rod 231 to slide in the liquid inlet channel 131 along the opposite direction, and then driving the sealing member 230 to slide away from the first direction, so that it is in the second blocked position.

[0052] The process of switching the sealing element 230 between the first and second positions is as follows: When the liquid level in the slurry tank 100 gradually rises, the floating element 210 rises along with the liquid level in the slurry tank 100. At the same time, the first connecting rod 221 can push the second connecting rod 222 to rotate, thereby causing the sliding rod 231 to slide in the liquid inlet channel 131, so that the sealing part 232 gradually approaches the connecting port 1313. When the liquid level in the slurry tank 100 reaches the second preset maximum liquid level, the sealing part 232 completely blocks the connecting port 1313, that is, the sealing element 230 switches from the first position to the second position. The position is switched to the second position; as the liquid level in the slurry tank 100 gradually decreases, the floating member 210 decreases along with the liquid level in the slurry tank 100. At the same time, the first connecting rod 221 drives the second connecting rod 222 to rotate, thereby driving the sliding rod 231 to slide in the liquid inlet channel 131, so that the sealing part 232 gradually moves away from the connecting port 1313. When there is a sufficient gap between the sealing part 232 and the connecting port 1313, the battery slurry can flow into the slurry tank 100 through the liquid inlet channel 131, that is, the sealing member 230 switches from the second position to the first position.

[0053] Optionally, the floating member 210 can be spherical or cylindrical. For example, the floating member 210 can be designed as a cylinder or a polygonal prism. This embodiment does not limit the shape of the floating member 210; designers can adjust it according to actual processing requirements.

[0054] It should be noted that when the liquid level detected by the liquid level detection module reaches the first preset maximum liquid level, the pump stops pumping battery slurry into the slurry tank 100; when the sealing component 230 is in the second position, the liquid level of the battery slurry in the slurry tank 100 is the second preset maximum liquid level; wherein, the second preset maximum liquid level is greater than the first preset maximum liquid level. This design can avoid the sealing component 230 frequently switching between the first and second positions, thereby avoiding frequent friction between the sealing part 232 and the inner wall of the liquid inlet pipe 130, which would affect the service life of the auxiliary switch module 200. In other words, when the liquid level detection module can be used normally, the sealing component 230 is always in the second position, that is, the liquid inlet channel 131 is normally open.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that the above embodiments do not limit this utility model in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A battery slurry storage device, characterized in that, include: A slurry tank (100) containing battery slurry, the slurry tank (100) having a liquid inlet channel (131); A liquid level detection module is installed inside the slurry tank (100); A liquid pump is installed at the inlet of the liquid inlet channel (131), and the liquid pump is signal-connected to the liquid level detection module; The auxiliary switch module (200) includes a floating element (210), a connecting rod assembly (220), and a sealing element (230). The floating element (210) is connected to the sealing element (230) through the connecting rod assembly (220). The floating element (210) rises and falls with the rise and fall of the liquid level in the slurry tank (100) to drive the sealing element (230) to switch between a first position connecting the liquid inlet channel (131) and a second position cutting off the liquid inlet channel (131).

2. The battery slurry storage device according to claim 1, characterized in that, The slurry tank (100) includes: A barrel body (110), one end of which is open; A bucket lid (120) is provided on the opening of the bucket body (110), and the bucket lid (120) is provided with a clearance hole (121) for the connecting rod assembly (220) to pass through; The liquid inlet pipe (130) is connected to the top of the bucket lid (120), and the liquid inlet channel (131) is opened in the liquid inlet pipe (130).

3. The battery slurry storage device according to claim 2, characterized in that, The liquid inlet channel (131) includes a first channel (1311) and a second channel (1312) arranged at an angle, and a connecting port (1313) is provided between the first channel (1311) and the second channel (1312) to connect the two. The outlet of the second channel (1312) is connected to the interior of the slurry tank (100). When the sealing element (230) is in the second position, the sealing element (230) can seal the communication port (1313).

4. The battery slurry storage device according to claim 3, characterized in that, The sealing element (230) includes: A sliding rod (231) is partially slidably inserted through the liquid inlet channel (131), and one end of the sliding rod (231) extending out of the liquid inlet channel (131) is fixedly connected to the connecting rod assembly (220); The sealing part (232) is connected to one end of the sliding rod (231) located in the liquid inlet channel (131) and can cooperate with the connecting port (1313) to cut off the liquid inlet channel (131).

5. The battery slurry storage device according to claim 3, characterized in that, The linkage assembly (220) includes a first link (221) and a second link (222) that are angled together and connected to each other. The end of the first link (221) away from the second link (222) is connected to the floating member (210), and the end of the second link (222) away from the first link (221) is fixedly connected to the sealing member (230).

6. The battery slurry storage device according to claim 5, characterized in that, The first link (221) and the second link (222) are connected by fasteners, and the included angle between them is >90°.

7. The battery slurry storage device according to claim 5, characterized in that, A hinge frame (140) is also provided on the side wall of the liquid inlet pipe (130), and the second connecting rod (222) is hinged to the hinge frame (140).

8. The battery slurry storage device according to claim 1, characterized in that, The floating component (210) is spherical or cylindrical in shape.

9. The battery slurry storage device according to claim 1, characterized in that, The liquid level detection module is an ultrasonic liquid level gauge.

10. The battery slurry storage device according to claim 1, characterized in that, When the current liquid level detected by the liquid level detection module reaches the first preset maximum liquid level, the liquid pump stops pumping battery slurry into the slurry tank (100); When the sealing component (230) is in the second position, the liquid level of the battery slurry in the slurry tank (100) is the second preset maximum liquid level; Wherein, the second preset maximum liquid level is greater than the first preset maximum liquid level.

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