Cover plate assembly and battery

Abstract

The utility model belongs to the technical field of batteries, and discloses a cover plate assembly and a battery. The cover plate assembly comprises a cover plate body and a detection assembly, a detection hole is formed in the cover plate body, the detection assembly comprises a sealing structure and a detection piece, the sealing structure is arranged in the detection hole in a sealing mode, the detection piece penetrates through the sealing structure, and the two ends of the detection piece are located on the two sides of the cover plate body respectively. When the cover plate assembly is connected to the battery shell, the detection piece can extend into the battery through the detection hole so as to detect the working state of the battery cell, the situation that the detection piece extends into the battery from the explosion-proof sheet of the battery cell for detection can be avoided, the sealing structure can ensure the sealing performance of the cover plate assembly, and then the influence of the external environment on the performance of the battery is avoided; therefore, the use function of the explosion-proof sheet of the battery cell and the smooth proceeding of subsequent processes such as liquid injection and formation are ensured, and the cover plate assembly can realize further utilization of the battery after related experiments such as thermal management are finished, so that the use cost is saved to a great extent.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a cover plate assembly and a battery. Background Technology

[0002] As a crucial component of vehicles, the reliability of secondary batteries is paramount. Temperature is a significant factor influencing battery performance, and real-time monitoring of the battery's internal temperature is typically required during battery performance testing.

[0003] During testing, battery temperature sensors are typically used to detect the internal temperature of the battery. Existing technologies employ two methods for arranging these sensors. The first method places the sensor above the electrode plate welded to the terminal post. However, due to the internal resistance of the cell and the thermal conductivity of the casing, the temperature measured at the electrode plate does not accurately reflect the true internal temperature of the cell, resulting in poor performance. The second method embeds the sensor internally and extends its lead from the cell's explosion-proof diaphragm or electrolyte injection hole. This poses a risk to the design of the explosion-proof diaphragm and affects electrolyte injection and formation processes. Furthermore, after thermal management and related experiments, the cell often becomes unusable, increasing costs.

[0004] Therefore, a cover plate assembly and battery are needed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a cover plate assembly and a battery that can avoid the risk of damage to the battery's explosion-proof sheet caused by introducing the battery temperature sensing lead into the battery from the explosion-proof sheet of the battery cell, ensure the normal progress of electrolyte injection and formation processes, and also guarantee the performance of the battery cell after testing, thereby reducing costs.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A cover plate assembly includes a cover plate body and a detection component. The cover plate body has a detection hole. The detection component includes a sealing structure and a detection element. The sealing structure is detachably connected to the cover plate body and is sealed to the detection hole. The detection element passes through the sealing structure, and its two ends are located on both sides of the cover plate body.

[0008] As an optional technical solution, the sealing structure includes a housing and a fixing member, the first surface of the housing and the second surface of the cover plate body are attached to each other, the fixing member is used to connect the housing and the cover plate body, and the detection member is inserted through the housing.

[0009] As an optional technical solution, the housing includes a connecting part and a detection part that are fixedly connected. The connecting part protrudes from the periphery of the detection part. The first surface is disposed on the connecting part. The detection part is provided with a through hole. The detection element passes through the through hole, and the outer periphery of the detection element and the inner wall of the through hole are sealed together.

[0010] As an optional technical solution, a sealant is applied between the detection element and the inner wall of the through hole.

[0011] As an optional technical solution, the connecting part is disposed in the middle section of the detection part along the height direction of the detection part, and the detection part is divided into a first detection part and a second detection part, with the first detection part and the second detection part located on both sides of the cover plate body, respectively.

[0012] As an optional technical solution, the sealing structure further includes a sealing element, a first groove is provided on the connecting part, the first groove is provided on the first surface, the sealing element is sleeved on the outer periphery of the first detection part or the second detection part, and the sealing element is located in the groove, and the sealing element is located between the connecting part and the cover plate body.

[0013] As an optional technical solution, the fastener includes a fixing bolt and a fixing nut;

[0014] The fixing nut is fixedly disposed on the connecting part, the cover plate body is provided with a first connecting hole, the sealing element is provided with a second connecting hole, and the fixing bolt passes through the first connecting hole and the second connecting hole in sequence and is threadedly connected to the fixing nut so that the connecting part and the cover plate body are connected;

[0015] Alternatively, the fixing nut is fixedly disposed on the cover plate body, the connecting part is provided with a third connecting hole, the sealing element is provided with a fourth connecting hole, and the fixing bolt passes through the third connecting hole and the fourth connecting hole in sequence and is threadedly connected to the fixing nut so that the connecting part and the cover plate body are connected.

[0016] As an optional technical solution, the cover assembly further includes a sealing cap, which is sealed to the sealing structure.

[0017] As an optional technical solution, the cover assembly further includes a sealing ring disposed between the sealing cover and the sealing structure.

[0018] This utility model also adopts the following technical solution:

[0019] The battery includes a cell and a battery casing, and the battery also includes a cover assembly as described above, wherein the cell is disposed in the battery casing and the cover assembly is connected to the battery casing.

[0020] The beneficial effects of this utility model are:

[0021] This utility model discloses a cover plate assembly, which includes a cover plate body and a detection component. The cover plate body is provided with a detection hole, and the detection component includes a sealing structure and a detection element. The sealing structure is sealed in the detection hole, and the detection element passes through the sealing structure, with its two ends located on both sides of the cover plate body. When this cover plate assembly is connected to the battery casing, the detection element can extend into the battery through the detection hole to detect the working status of the battery cell. This avoids the need to extend into the battery through the cell's explosion-proof plate or the electrolyte filling hole for detection. The sealing structure ensures the sealing performance of the cover plate assembly, thereby preventing the influence of the external environment on the battery performance. This ensures the functionality of the cell's explosion-proof plate and the smooth progress of subsequent electrolyte filling and formation processes. Furthermore, this cover plate assembly allows for the further utilization of the battery after thermal management and other related experiments, significantly saving on usage costs.

[0022] This utility model also discloses a battery, which includes a battery casing and a battery cell, and also includes the aforementioned cover plate assembly. The cover plate body is connected to the battery casing, and a detection device is used to detect the working state of the battery cell. By installing the aforementioned cover plate assembly, this battery allows the detection device to be inserted into the battery through a detection hole, thereby ensuring the functionality of the cell's explosion-proof plate and the smooth progress of subsequent liquid injection and formation processes. This ensures the normal conduct of battery experiments, and the tested battery can be further utilized, saving costs. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the battery structure according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the detection component according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the sealing cap according to an embodiment of the present utility model;

[0026] Figure 4 yes Figure 3 A magnified view of part A in the image.

[0027] In the picture:

[0028] 1. Cover plate assembly; 2. Battery cell; 3. Battery casing; 4. Explosion-proof sheet;

[0029] 10. Cover plate body; 11. Inspection hole;

[0030] 20. Detection component; 211. Housing; 2111. First surface; 2112. Connecting part; 21121. Groove; 2113. First detection part; 2114. Second detection part; 2115. Through hole; 2121. Fixing bolt; 2122. Fixing nut; 213. Seal; 22. Detection component; 221. Second snap-fit ​​component; 23. Sealing cover; 231. First snap-fit ​​component; 2311. Snap-fit ​​rod; 2312. Rebound component. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0035] Example 1

[0036] like Figure 1 As shown, this embodiment discloses a battery, which includes a battery casing 3 and a battery cell 2, and also includes a cover plate assembly 1. The cover plate assembly 1 includes a cover plate body 10 and a detection component 20. The cover plate body 10 is connected to the battery casing 3, and the battery cell 2 is placed in the battery casing 3. A detection hole 11 is provided on the cover plate body 10, and the detection component 20 is disposed in the detection hole 11. The detection component 20 includes a sealing structure and a detection element 22. The sealing structure is detachably connected to the cover plate body 10, and the sealing structure and the detection hole 11 are sealed together. The detection element 22 passes through the sealing structure. When performing performance testing on cell 2, this battery allows the testing component 22 to be inserted into the battery through the testing hole 11. The sealing structure ensures the sealing performance of the cover assembly 1, preventing external environmental factors from affecting the battery's performance. Since the testing component 22 is inserted into the battery through the testing hole 11, compared to the existing method where the testing component 22 enters the battery through the explosion-proof plate 4 or the liquid injection hole on the cover body 10, it avoids affecting the explosion-proof plate 4 or the liquid injection function. This ensures the functionality of the explosion-proof plate 4 and the smooth progress of subsequent liquid injection processes. Furthermore, the sealing structure of this cover assembly 1 and the cover body 10 are detachably connected, allowing the sealing structure to maintain the integrity of the cover assembly 1 after thermal management and other related experiments. This enables further utilization of the battery and significantly reduces usage costs.

[0037] This embodiment also provides a cover plate assembly 1, such as Figure 1 and 2 As shown, the cover assembly 1 includes a cover body 10 and a detection assembly 20. The cover body 10 has a detection hole 11. The detection assembly 20 includes a sealing structure and a detection element 22. The sealing structure is detachably connected to the cover body 10 and is sealed to the detection hole 11. The detection element 22 passes through the sealing structure, and its two ends are located on both sides of the cover body 10. Specifically, in this embodiment, the detection element 22 is a temperature sensor, which includes a probe and a wiring harness connected to each other. The probe extends into the battery and is installed at the temperature measurement point of the cell 2. One end of the wiring harness passes through the sealing structure and is connected to an external detection device, improving the convenience of detection. The sealed structure and the detection hole 11 are sealed to each other. This arrangement can ensure the accuracy of temperature monitoring inside the battery and avoid damage to the explosion-proof sheet 4. Furthermore, the sealing structure is detachably connected to the cover body 10. After the test is completed, the detection element 22 can be removed while maintaining the integrity of the battery, thereby enabling further utilization of the battery and reducing costs.

[0038] Specifically, in this embodiment, the detection element 22 is described as a temperature sensor. In other embodiments, the detection element 22 can also be other types of sensors, such as a humidity sensor, to detect the humidity and other related characteristics inside the battery. This is not a limitation.

[0039] Furthermore, the sealing structure includes a housing 211 and a fixing member. The first surface 2111 of the housing 211 is attached to the second surface of the cover plate body 10. The fixing member is used to connect the housing 211 and the cover plate body 10. The detection element 22 passes through the housing 211. Specifically, in this embodiment, the fixing member can fix the housing 211 and the cover plate body 10 together, so that the first surface 2111 of the housing 211 and the second surface of the cover plate body 10 are attached. This ensures that the cover plate assembly 1 has good stability during battery testing, prevents the sealing structure from detaching from the cover plate body 10, and ensures the normal progress of the test.

[0040] Specifically, in this embodiment, the upper surface of the housing 211 is the first surface 2111, and the lower surface of the cover plate body 10 is the second surface. During actual installation, the housing 211 approaches the cover plate body 10 from below and is fixedly connected to the cover plate body 10 through fasteners, thereby ensuring the connection stability between the housing 211 and the cover plate body 10.

[0041] Furthermore, the housing 211 includes a connecting portion 2112 and a detection portion that are fixedly connected. The connecting portion 2112 protrudes from the periphery of the detection portion, and a first surface 2111 is disposed on the connecting portion 2112. The detection portion is provided with a through hole 2115, and the detection element 22 passes through the through hole 2115, with a sealing fit between the outer periphery of the detection element 22 and the inner wall of the through hole 2115. Specifically, in this embodiment, the detection portion is provided with a through hole 2115, and the detection element 22 passes through the through hole 2115, with a sealing fit between the outer periphery of the detection element 22 and the inner wall of the through hole 2115. This can prevent external gas from entering the battery through the through hole 2115, thereby ensuring the sealing performance of the cover assembly 1. The connecting portion 2112 protrudes from the periphery of the detection portion, and the first surface 2111 is disposed on the connecting portion 2112. The connecting portion 2112 is equivalent to a flange, which can ensure the connection stability between the housing 211 and the cover body 10.

[0042] Specifically, in this embodiment, the number of through holes 2115 is set according to the number of detection elements 22. When there are multiple detection elements 22, the number of through holes 2115 is also set to be multiple. The multiple through holes 2115 are evenly distributed in the detection section, which improves the convenience of use.

[0043] Furthermore, a sealant is applied between the inner wall of the detection element 22 and the through hole 2115. Specifically, in this embodiment, applying sealant between the inner wall of the detection element 22 and the through hole 2115 ensures the sealing effect of the sealing structure, thereby ensuring the sealing effect of the cover assembly 1, preventing external air from entering the battery during the test and adversely affecting the test, while also ensuring the sealing performance of the battery itself, thereby ensuring the battery's performance.

[0044] Specifically, in another embodiment, a sealing gasket can also be threaded through the wire harness of the detection element 22. The sealing gasket and the interior of the through hole 2115 are interference-fitted. A sealing hole is provided on the sealing gasket. The interference fit between the wire harness and the sealing hole on the sealing gasket can also ensure that the interior of the detection element 22 and the through hole 2115 are sealed, thereby ensuring the sealing performance of the cover plate assembly 1.

[0045] Furthermore, the connecting part 2112 is disposed in the middle section of the detection part along the height direction of the detection part, dividing the detection part into a first detection part 2113 and a second detection part 2114, which are respectively located on both sides of the cover plate body 10. Specifically, in this embodiment, the first detection part 2113 is located on the side of the cover plate body 10 away from the probe, and the second detection part 2114 is located on the side of the cover plate body 10 closer to the probe. This arrangement allows the first detection part 2113 to pass through the detection hole 11 on the cover plate body 10 when the housing 211 is installed on the cover plate body 10 from bottom to top, thereby providing a certain guiding and positioning function for the housing 211, improving the convenience of installation of the housing 211, and enhancing the connection stability.

[0046] Furthermore, the sealing structure also includes a sealing element 213. A first groove 21121 is provided on the connecting portion 2112, and the first groove 21121 is disposed on the first surface 2111. The sealing element 213 is sleeved on the outer periphery of the first detection portion 2113, and the sealing element 213 is located in the groove 21121. The sealing element 213 is located between the connecting portion 2112 and the cover plate body 10. Specifically, in this embodiment, this arrangement can ensure the sealing performance between the connecting portion 2112 and the cover plate assembly 1, further ensuring that outside air will not enter the battery, thereby ensuring battery performance.

[0047] Specifically, in this embodiment, the depth of the first groove 21121 is less than the thickness of the seal 213, which can ensure that the seal 213 can be effectively squeezed, thereby ensuring the sealing performance.

[0048] Furthermore, the fastener includes a fixing bolt 2121 and a fixing nut 2122. The fixing nut 2122 is fixedly disposed on the connecting part 2112. The cover plate body 10 is provided with a first connecting hole, and the sealing element 213 is provided with a second connecting hole. The fixing bolt 2121 passes through the first connecting hole and the second connecting hole in sequence and is threadedly connected to the fixing nut 2122 so that the connecting part 2112 and the cover plate body 10 are connected. Specifically, in this embodiment, the housing 211 is an injection molded part. When the housing 211 is injection molded, the fixing nut 2122 is injection molded synchronously with the housing 211 to ensure the connection stability between the fixing nut 2122 and the housing 211. The fixing bolt 2121 passes through the first connecting hole opened on the cover plate body 10 and the second connecting hole opened on the sealing member 213 in sequence, and is threadedly connected to the fixing nut 2122 located on the connecting part 2112. This arrangement can not only ensure the connection stability between the connecting part 2112 and the cover plate body 10, but also make the sealing member 213 compressed, thereby improving the sealing performance, and is easy to disassemble and assemble to ensure ease of use.

[0049] Furthermore, such as Figure 1 and Figure 3 As shown, the cover assembly 1 also includes a sealing cover 23, which is sealed to the sealing structure. Specifically, in this embodiment, after the test is completed, the sealing cover 23 is sealed to the sealing structure, which can further ensure the sealing performance of the cover assembly 1, thereby ensuring the sealing performance of the battery, preventing air leakage, and ensuring the normal use of the battery.

[0050] Specifically, the sealing cap 23 is provided with a first snap-fit ​​member 231, and the detection component 20 is provided with a second snap-fit ​​member 221. The first snap-fit ​​member 231 can snap into the second snap-fit ​​member 221. In this embodiment, the first snap-fit ​​member 231 includes two snap-fit ​​units, each including a snap-fit ​​rod 2311 and a spring-loaded member 2312. The spring-loaded member 2312 is elastically disposed on the snap-fit ​​rod 2311. The two snap-fit ​​units are symmetrically arranged. The second snap-fit ​​member 221 includes a snap-fit ​​post and a protrusion. The snap-fit ​​post is connected to the first detection component 20. Part 2113 is protruding and connected to the end of the snap-fit ​​post away from the first detection part 2113. When the sealing cover 2323 is fastened to the sealing structure, the snap-fit ​​post compresses the two spring-loaded members 2312, causing the two spring-loaded members 2312 to spring back. The snap-fit ​​post enters the snap-fit ​​area formed by the two snap-fit ​​rods 2311 and the two spring-loaded members 2312, completing the snap-fit ​​of the first snap-fit ​​member 231 and the second snap-fit ​​member 221, thereby ensuring the connection stability of the sealing cover 2323 and the sealing structure, and thus ensuring the sealing performance of the cover assembly 1.

[0051] Furthermore, the cover plate assembly 1 also includes a sealing ring, which is disposed between the sealing cover 23 and the sealing structure. Specifically, in this embodiment, a sealing ring is disposed between the sealing cover 23 and the first detection part 2113 of the sealing structure. When the sealing cover 23 and the first detection part 2113 are fastened together, the sealing ring is located between the sealing cover 23 and the first detection part 2113 to seal the gap between the sealing cover 23 and the first detection part 2113, thereby ensuring a good sealing effect between the sealing cover 23 and the first detection part 2113, thus ensuring the sealing performance of the cover plate assembly 1 and ensuring the normal conduct of the test.

[0052] Specifically, in this embodiment, the sealing cover 23 and the sealing structure can also be sealed together with sealant, which will not be elaborated here.

[0053] The installation process of the cover plate assembly 1 is described in detail below. First, the sealing element 213 is placed in the groove 21121 of the connecting part 2112. Then, the first detection part 2113 of the detection component 20 passes through the detection hole 11 of the cover plate body 10 from the end of the cover plate body 10 near the cell 2, so that the first surface 2111 of the connecting part 2112 and the second surface of the cover plate body 10 are in contact. Then, the fixing bolt 2121 passes through the first connecting hole on the cover plate body 10 and the second connecting hole on the sealing element 213 in sequence, and is then fixed to the fixing nut provided on the connecting part 2112. 2122 is threaded to connect both the seal 213 and the connecting part 2112 to the cover body 10. Then, the detection element 22 is passed through the through hole 2115 provided on the housing 211, and the gap between the detection element 22 and the through hole 2115 is sealed with sealant. Then, relevant battery testing tests are performed. After the test is completed, the sealing cover 23 is fastened to the detection assembly 20. The sealing ring can seal the gap between the sealing cover 23 and the first detection part 2113, thereby ensuring that the cover assembly 1 has a good sealing effect and ensuring the sealing performance and performance of the battery.

[0054] Example 2

[0055] This embodiment provides a cover plate assembly 1, which differs from the cover plate assembly 1 in Embodiment 1 in the specific structure of the detection component 20 and the cooperation relationship between the detection component 20 and the cover plate body 10.

[0056] Specifically, in this embodiment, the sealing structure includes a housing 211 and a fixing member. The first surface 2111 of the housing 211 is attached to the second surface of the cover plate body 10. The fixing member is used to connect the housing 211 and the cover plate body 10. The detection member 22 passes through the housing 211. The lower surface of the housing 211 is the first surface 2111, and the upper surface of the cover plate body 10 is the second surface. In actual installation, the housing 211 approaches the cover plate body 10 from above and is fixedly connected to the cover plate body 10 by the fixing member, thereby ensuring the connection stability between the housing 211 and the cover plate body 10. This arrangement also facilitates the removal of the sealing structure from the cover plate body 10, improving convenience during use.

[0057] Specifically, in this embodiment, the first groove 21121 is disposed on the first surface 2111, the sealing member 213 is sleeved on the outer periphery of the second detection part 2114, and the sealing member 213 is disposed in the first groove 21121, so that the sealing member 213 can be sandwiched between the lower surface of the housing 211 and the upper surface of the cover plate body 10, ensuring the sealing performance between the cover plate body 10 and the sealing structure, thereby ensuring the sealing performance of the battery.

[0058] Specifically, in this embodiment, the fixing component includes a fixing bolt 2121 and a fixing nut 2122. The fixing nut 2122 is fixedly disposed on the cover plate body 10. A third connecting hole is provided on the connecting part 2112, and a fourth connecting hole is provided on the sealing component 213. The fixing bolt 2121 passes through the third connecting hole and the fourth connecting hole in sequence and is threadedly connected to the fixing nut 2122 so that the connecting part 2112 and the cover plate body 10 are connected. Specifically, in this embodiment, the cover plate body 10 is provided with a connecting through hole, and the fixing nut 2122 is coaxially arranged with the connecting through hole. The fixing nut 2122 is located on the side of the cover plate body 10 away from the first detection part 2113. During installation, the fixing bolt 2121 first passes through the third connecting hole of the connecting part, then through the fourth connecting hole of the sealing member 213, and then through the connecting through hole to be threadedly connected to the fixing nut 2122, so as to connect the cover plate body 10 and the sealing structure. The sealing member 213 is sandwiched between the lower surface of the housing 211 and the upper surface of the cover plate body 10 to ensure sealing performance. In other possible embodiments, the fixing nut 2122 is directly provided on the cover plate body 10. For example, the fixing nut 2122 is integrally connected to the cover plate body 10. During installation, the fixing bolt 2121 passes through the third connecting hole of the connecting part and the fourth connecting hole of the sealing member 213 in sequence and is threadedly connected to the fixing nut 2122 to connect the cover plate body 10 and the sealing structure.

[0059] The installation process of the cover plate assembly 1 in this embodiment is described in detail below. First, the sealing element 213 is placed in the groove 21121. Then, the second detection part 2114 of the detection component 20 passes through the detection hole 11 of the cover plate body 10 from the end away from the battery cell 2, so that the first surface 2111 of the connecting part 2112 and the second surface of the cover plate body 10 are in contact. Then, the fixing bolt 2121 passes through the third connecting hole of the connecting part 2112 and the fourth connecting hole of the sealing element 213 in sequence, and is threadedly connected to the fixing nut 2122 to connect the sealing element 213 and the connecting part 2112. All components are connected to the cover plate body 10. Then, the detection element 22 is passed through the through hole 2115 provided on the housing 211, and the gap between the detection element 22 and the through hole 2115 is sealed with sealant. Then, relevant battery testing tests are performed. After the test is completed, the sealing cover 23 is fastened to the sealing structure. The sealing ring can seal the gap between the sealing cover 23 and the first detection part 2113. Alternatively, after the test is completed, the sealing structure is removed, and the sealing cover 23 is sealed to the cover plate body, thereby ensuring that the cover plate assembly 1 has a good sealing effect and ensuring the sealing performance and performance of the battery.

[0060] This embodiment also discloses a battery, which includes a battery cell 2 and a battery casing 3, and also includes the aforementioned cover plate assembly 1. The battery cell 2 is disposed in the battery casing 3, and the cover plate assembly 1 is connected to the battery casing 3. By installing the aforementioned cover plate assembly 1, it is possible to ensure that the battery test can be carried out normally, and after the test is completed, the battery can be reused, thereby effectively reducing costs.

[0061] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A cover assembly, characterized by The cover plate assembly includes a cover plate body (10) and a detection component (20). The cover plate body (10) is provided with a detection hole (11). The detection component (20) includes a sealing structure and a detection element (22). The sealing structure is detachably connected to the cover plate body (10) and the sealing structure is sealed to the detection hole (11). The detection element (22) passes through the sealing structure and the two ends of the detection element (22) are respectively located on both sides of the cover plate body (10). The sealing structure includes a housing (211) and a fastener. The first surface (2111) of the housing (211) and the second surface of the cover plate body (10) are attached. The fastener is used to connect the housing (211) and the cover plate body (10). The detection element (22) passes through the housing (211). The housing (211) includes a connecting part (2112) and a detection part that are fixedly connected. The connecting part (2112) protrudes from the periphery of the detection part. The first surface (2111) is disposed on the connecting part (2112). The detection part is provided with a through hole (2115). The detection element (22) passes through the through hole (2115), and the outer periphery of the detection element (22) and the inner wall of the through hole (2115) are sealed together.

2. The cover plate assembly according to claim 1, characterized in that, A sealant is applied between the inner wall of the test piece (22) and the through hole (2115).

3. The cover plate assembly according to claim 1, characterized in that, The connecting part (2112) is disposed in the middle section of the detection part along the height direction of the detection part, and the detection part is divided into a first detection part (2113) and a second detection part (2114). The first detection part (2113) and the second detection part (2114) are respectively located on both sides of the cover plate body (10).

4. The cover plate assembly according to claim 3, characterized in that, The sealing structure further includes a sealing element (213). A first groove (21121) is provided on the connecting part (2112). The first groove (21121) is provided on the first surface (2111). The sealing element (213) is sleeved on the outer periphery of the first detection part (2113) or the second detection part (2114). The sealing element (213) is located in the groove (21121). The sealing element (213) is located between the connecting part (2112) and the cover plate body (10).

5. The cover plate assembly according to claim 4, characterized in that, The fasteners include a fixing bolt (2121) and a fixing nut (2122); The fixing nut (2122) is fixedly disposed on the connecting part (2112). The cover plate body (10) is provided with a first connecting hole, and the sealing element (213) is provided with a second connecting hole. The fixing bolt (2121) passes through the first connecting hole and the second connecting hole in sequence and is threadedly connected to the fixing nut (2122) so that the connecting part (2112) and the cover plate body (10) are connected. Alternatively, the fixing nut (2122) is fixedly disposed on the cover plate body (10), the connecting part (2112) is provided with a third connecting hole, the sealing element (213) is provided with a fourth connecting hole, and the fixing bolt (2121) passes through the third connecting hole and the fourth connecting hole in sequence and is threadedly connected to the fixing nut (2122) so that the connecting part (2112) and the cover plate body (10) are connected.

6. The cover plate assembly according to any one of claims 1-5, characterized in that, The cover assembly also includes a sealing cap (23), which is sealed to the sealing structure.

7. The cover plate assembly according to claim 6, characterized in that, The cover assembly also includes a sealing ring disposed between the sealing cover (23) and the sealing structure.

8. A battery, said battery comprising a cell (2) and a battery casing (3), characterized in that, The battery further includes a cover plate assembly as described in any one of claims 1-7, wherein the cell (2) is disposed in the battery housing (3), and the cover plate assembly is connected to the battery housing (3).

Images