Pressure sealing assembly and battery

Abstract

The utility model relates to the field of batteries, and provides a pressure sealing assembly and a battery. The pressure sealing assembly comprises a positioning disc, a first elastic piece and a second elastic piece are connected to the positioning disc, the first end of the first elastic piece and the first end of the second elastic piece are connected to the positioning disc, and the second end of the second elastic piece abuts against the side, facing the positioning disc, of the first elastic piece. The sleeve is pressed on the side, away from the positioning disc, of the first elastic piece; the locking piece abuts against the end, away from the positioning disc, of the sleeve, and the sleeve is suitable for abutting against the position between the sleeve and the locking piece under the action of the first elastic piece. The pressure sealing assembly can ensure the durability and stability of the sealing effect; the assembling and disassembling processes of the pressure sealing assembly become simple and rapid; the sealing requirements of different sizes and shapes can be met; and the sealing structure can adapt to size change caused by factors such as temperature change and material expansion to a certain extent, so that a stable sealing effect is kept.

Description

Technical Field

[0001] The utility model relates to the field of batteries and provides a pressure sealing component and a battery. Background Art

[0002] Hydrogen fuel cells can directly convert the chemical energy of hydrogen into electrical energy through electrochemical reactions, and are not limited by the Carnot cycle and have a high conversion efficiency. Therefore, they have attracted widespread attention and are gradually being applied in the field of transportation.

[0003] The packaging method of the entire stack, the distribution of the press load and the corresponding structural design of the fuel cell stack directly affect the stress condition of the fuel cell stack components, which in turn affects the mass transfer, momentum transfer, heat transfer and electrochemical reaction within the fuel cell stack.

[0004] Taking automotive fuel cells as an example, the stability, life and reliability of the stack performance of automotive fuel cells involve many factors. In addition to their own operating conditions, more of them come from constantly changing external load excitations, such as road vibration transmission and mechanical loads from impact and collision, as well as thermal loads from thermal expansion and contraction caused by frequent starting and stopping of vehicles, braking, and changes in ambient temperature.

[0005] In the relevant technology, with the emergence of problems such as insufficient overall rebound force and hysteresis caused by aging and compression failure of the rubber seals and membrane electrode materials of the entire stack, almost all fuel cells will face the loss of pressing force. For the same entire stack, the pressing force after two disassembly and assembly under the same conditions can differ by as much as 50%, which makes it difficult to ensure the performance stability of the entire stack. Utility Model Content

[0006] The embodiment of the utility model provides a pressure sealing assembly, which is used to solve the defect of lax pressure sealing in the related technology and meet the engineering demand of stable press-fitting force.

[0007] The embodiment of the utility model also provides a battery.

[0008] The first embodiment of the utility model provides a pressure sealing assembly, comprising:

[0009] A positioning plate, wherein a first elastic member and a second elastic member are connected to the positioning plate, a first end of the first elastic member and a first end of the second elastic member are connected to the positioning plate, and a second end of the second elastic member abuts against a side of the first elastic member facing the positioning plate;

[0010] A sleeve, pressed on a side of the first elastic member away from the positioning plate;

[0011] The locking member is in contact with an end of the sleeve facing away from the positioning plate, and the sleeve is suitable for being pressed between the sleeve and the locking member under the action of the first elastic member.

[0012] According to an embodiment of the present invention, a floating end plate is further included, wherein the floating end plate is located below the positioning plate, and the sleeve is disposed on the floating end plate.

[0013] According to an embodiment of the present utility model, a receiving groove is formed on the floating end plate, and the positioning plate is arranged in the receiving groove.

[0014] According to an embodiment of the utility model, a mounting portion is formed by a recess on a side of the positioning plate facing away from the floating end plate and toward a side of the floating end plate, and a first end of the first elastic member and a first end of the second elastic member are connected to the mounting portion.

[0015] According to an embodiment of the utility model, a boss structure is formed on the floating end plate, a through hole is opened on the positioning plate, the boss structure is passed through the through hole, and the sleeve is sleeved on the boss structure.

[0016] According to an embodiment of the present invention, the first elastic member and the second elastic member are annular and sleeved on the outer circumference of the boss structure.

[0017] According to an embodiment of the present invention, a positioning groove is formed on a side of the sleeve facing the locking member, and an end portion of the locking member abuts against the positioning groove.

[0018] According to an embodiment of the present invention, a transition chamfer is formed on the edge of the sleeve facing the positioning plate, and the second end of the first elastic member abuts against the transition chamfer.

[0019] According to an embodiment of the utility model, an end plate is further included, the locking member is passed through the end plate, and a groove matching the sleeve is formed on the end plate.

[0020] A second aspect of the present invention provides a battery, comprising the above-mentioned pressure sealing assembly.

[0021] According to the pressure sealing assembly provided by the first aspect embodiment of the present utility model, through the combined design of the first elastic member and the second elastic member, elastic compression of the sleeve is achieved. When the locking member abuts against one end of the sleeve, the sleeve is tightly clamped between the locking member and the positioning disc under the action of the first elastic member, thereby forming a stable sealing effect. Especially when subjected to external pressure or vibration, due to the elastic action of the first elastic member, the pressure between the sleeve and the locking member can be automatically adjusted to ensure the durability and stability of the sealing effect. Both the first elastic member and the second elastic member are connected to the positioning disc, and this design makes the assembly and disassembly process of the pressure sealing assembly simple and fast. The user only needs to place the sleeve on the first elastic member and fix it with the locking member to complete the assembly. When disassembly is required, just loosen the locking member, and the sleeve can be easily removed from the first elastic member. The structural design of the pressure sealing assembly enables it to adapt to different sizes and shapes of sealing requirements. By adjusting the tightening degree of the locking member, tight clamping of sleeves of different sizes can be achieved. At the same time, due to the elastic action of the first elastic member, the pressure sealing assembly can also adapt to size changes caused by factors such as temperature changes and material expansion to a certain extent, so as to maintain a stable sealing effect. The first elastic member and the second elastic member can be made of wear-resistant and corrosion-resistant materials, with high durability and stability. Even during long-term use, good elasticity and sealing performance can be maintained. In addition, the positioning disc and the locking member are also made of high-quality materials, which can withstand large pressures and vibrations, ensuring the stability and reliability of the entire pressure sealing assembly.

[0022] According to the battery provided by the second aspect embodiment of the present utility model, through the introduction of the pressure sealing assembly and its unique elastic clamping design, excellent sealing performance is provided for the battery. This can not only prevent electrolyte leakage, but also effectively isolate moisture, dust and other impurities in the external environment, ensuring the cleanliness and stability of the internal environment of the battery. The excellent sealing performance makes the internal structure and materials of the battery not easily damaged when facing external forces such as vibration and impact, greatly reducing the risk of safety accidents such as battery leakage and short circuit. In addition, even under extreme conditions such as high temperature and low temperature, the battery can maintain stable performance, further enhancing its safety. Due to the good sealing effect of the pressure sealing assembly, the electrolyte and other key materials inside the battery are not easily eroded and polluted by the external environment, thereby extending the service life of the battery. In addition, the durability of the sealing assembly also ensures that the battery can still maintain good performance during long-term use. The pressure sealing assembly adopts an elastic design, which can adapt to pressure changes under different environmental conditions and maintain a stable sealing effect. This enables the battery to maintain excellent performance in various application scenarios and has good adaptability. At the same time, it can also solve the problem of inconsistent pressing forces caused by assembly, process errors, etc. for a whole stack of multiple batteries. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the present invention or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic structural diagram of the battery provided by the utility model.

[0025] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle.

[0026] Figure 3 It is a schematic cross-sectional view of the pressure sealing assembly provided by the utility model.

[0027] Figure 4 It is a schematic diagram of a synthetic equivalent compression stiffness curve of a pressure sealing component provided by the utility model.

[0028] Reference numerals:

[0029] 100, positioning plate; 102, first elastic member; 104, second elastic member; 106, sleeve; 108, locking member; 110, floating end plate; 112, receiving groove; 114, mounting portion; 116, boss structure; 118, positioning groove; 120, end plate; 122, groove. DETAILED DESCRIPTION

[0030] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0031] like Figures 1 to 4 As shown, the first embodiment of the utility model provides a pressure sealing assembly, including a positioning plate 100, a sleeve 106 and a locking piece 108; wherein, the positioning plate 100 is connected with a first elastic piece 102 and a second elastic piece 104, the first end of the first elastic piece 102 and the first end of the second elastic piece 104 are connected to the positioning plate 100, and the second end of the second elastic piece 104 abuts against the side of the first elastic piece 102 facing the positioning plate 100; the sleeve 106 is pressed on the side of the first elastic piece 102 away from the positioning plate 100; the locking piece 108 abuts against the end of the sleeve 106 away from the positioning plate 100, and the sleeve 106 is suitable for being pressed between the sleeve 106 and the locking piece 108 under the action of the first elastic piece 102.

[0032] According to the pressure sealing assembly provided by the first aspect embodiment of the present utility model, through the combined design of the first elastic member 102 and the second elastic member 104, elastic pressing of the sleeve 106 is achieved. When the locking member 108 abuts against one end of the sleeve 106, the sleeve 106 is tightly clamped between the locking member 108 and the positioning disc 100 under the action of the first elastic member 102, thereby forming a stable sealing effect. Especially when subjected to external pressure or vibration, due to the elastic action of the first elastic member 102, the pressure between the sleeve 106 and the locking member 108 can be automatically adjusted to ensure the durability and stability of the sealing effect. Both the first elastic member 102 and the second elastic member 104 are connected to the positioning disc 100, and this design makes the assembly and disassembly process of the pressure sealing assembly simple and fast. The user only needs to place the sleeve 106 on the first elastic member 102 and fix it with the locking member 108 to complete the assembly. When disassembly is required, simply loosen the locking member 108, and the sleeve 106 can be easily removed from the first elastic member 102. The structural design of the pressure sealing assembly enables it to adapt to different sizes and shapes of sealing requirements. By adjusting the tightening degree of the locking member 108, tight clamping of sleeves 106 with different sizes can be achieved. At the same time, due to the elastic action of the first elastic member 102, the pressure sealing assembly can also adapt to size changes caused by factors such as temperature changes and material expansion to a certain extent, thereby maintaining a stable sealing effect. The first elastic member 102 and the second elastic member 104 can be made of wear-resistant and corrosion-resistant materials, having high durability and stability. Even during long-term use, good elasticity and sealing performance can be maintained. In addition, the positioning disc 100 and the locking member 108 are also made of high-quality materials, capable of withstanding large pressures and vibrations, ensuring the stability and reliability of the entire pressure sealing assembly.

[0033] Please continue to refer to Figures 1 to 4 , the first aspect embodiment of the present utility model provides a pressure sealing assembly, aiming to provide a pressure sealing solution with a simple structure and good sealing effect.

[0034] The positioning disc 100 serves as the basic structure of the entire assembly, providing a platform for fixing and supporting other components.

[0035] Both the first elastic member 102 and the second elastic member 104 are connected to the positioning disc 100. Among them, the first end of the first elastic member 102 and the first end of the second elastic member 104 are respectively connected to the positioning disc 100, and the second end of the second elastic member 104 abuts against the side of the first elastic member 102 facing the positioning disc 100. This design enables a mechanical relationship of mutual interaction to be formed between the first elastic member 102 and the second elastic member 104, that is, when the first elastic member 102 is subjected to pressure, it will drive the second elastic member 104 to perform corresponding actions.

[0036] The sleeve 106 is pressed on the side of the first elastic member 102 away from the positioning plate 100, and the locking member 108 is abutted against the end of the sleeve 106 away from the positioning plate 100. The locking member 108 is used to fix the position of the sleeve 106 and make it tightly abut between the locking member 108 and the positioning plate 100 under the action of the first elastic member 102.

[0037] Due to the interaction between the first elastic member 102 and the second elastic member 104, and the tight contact between the sleeve 106, the pressure sealing assembly can maintain a stable sealing effect under various working conditions. This design is particularly suitable for occasions where liquid or gas leakage needs to be prevented. The structure of the entire pressure sealing assembly is relatively simple, consisting of several main components, and is easy to manufacture and install. At the same time, this simple structure also reduces maintenance costs. Moreover, since the first elastic member 102 and the second elastic member 104 are made of elastic materials, for example, the first elastic member 102 and the second elastic member 104 can use disc springs. As a result, the first elastic member 102 and the second elastic member 104 can adapt to pressure changes in different working environments, thereby maintaining a stable sealing effect. This makes the pressure sealing assembly have a wide range of applicability. By adjusting the tightening degree of the locking member 108, the pressure between the sleeve 106 and the positioning plate 100 can be easily controlled, thereby achieving adjustment of the sealing effect. This design makes the operation more flexible and convenient.

[0038] In the embodiment of the present invention, the design concept of the first elastic member 102 and the second elastic member 104 is as follows.

[0039] First define Figure 3 The first elastic member 102 and the second elastic member 104 are closely attached together, "L1, L4" are the supporting point action radius of the first elastic member 102, "L2, L3" are the supporting point action radius of the second elastic member 104, where "L3" is the radius of the contact point position of the first and second elastic members 104; Figure 4 "a, b, c, d" are characteristic points in the compression stroke of the first elastic member 102, "e, f" are characteristic points in the compression stroke of the second elastic member 104; "F setting" is 1 / N of the required press-fitting force, where "N" is the number of pressure sealing components used in the entire stack packaging; "F large peak, F small peak" are the peak loads of the first elastic member 102 and the second elastic member 104, respectively.

[0040] like Figure 1 As shown, it is a schematic diagram of the installation state of a certain pressure sealing component in the whole stack assembly. The key is that the second elastic member 104 is arranged in the opposite direction relative to the first elastic member 102 (see Figure 3) There are "N" such repeated pressure seal components in the whole stack, and after the whole stack is encapsulated, each pressure seal component is in the specified pre-compression state, that is, in the installed state, the first elastic member 102 and the second elastic member 104 are both within the specified compression stroke range.

[0041] As Figure 4 shown, the first elastic member 102 and the second elastic member 104 after design selection need to meet the compression stiffness curve shown in the figure. For the first elastic member 102, the compression loads at the specified compression stroke "h large" at points a and d are F set, that is, Fa = Fd = F set.

[0042] And within the stroke range between points a and d, the compression load shows a trend of increasing first and then decreasing. The "a~d" section curve in the compression stiffness curve of the first elastic member 102 is used as the input for the design of the stiffness curve of the second elastic member 104, where points "a and d" in the compression stiffness curve of the first elastic member 102 correspond to points "f and e" in the compression stiffness curve of the second elastic member 104 respectively, and the compression strokes are equal, that is, hd - ha = hf - he.

[0043] In addition, it also needs to meet F small peak = F large peak - F set.

[0044] As can be seen above, when the compression stiffness curves of the first and second elastic members 104 meet the above three formulas, after the pressure seal components are combined, the compression load within the "a~d" section of the compression stroke can be kept constant within a very small error range around "F set". In addition, it is required that after the whole stack is encapsulated, the compression stroke of the pressure seal component is within the "b~c" section ("hb - ha" is the shrinkage section of the whole stack; "hd - hc" is the expansion section of the whole stack).

[0045] It should be noted that Figure 3 "L1~L4" in Figure 4 are the design variables of the first elastic member 102 and the second elastic member 104, which can vary according to the requirements of the press-fitting load and the size allowed by the space between the end plates 120.

[0046] According to an embodiment of the present invention, it further includes a floating end plate 110, the floating end plate 110 is located below the positioning plate 100, and the sleeve 106 is arranged on the floating end plate 110.

[0047] See Figure 2In one embodiment of the present invention, the pressure seal assembly further includes a floating end plate 110, which is located below the positioning plate 100 and provides an additional support and floating adjustment mechanism for the entire pressure seal assembly. The sleeve 106 is disposed on the floating end plate 110, which means that the position and stability of the sleeve 106 are not only affected by the first elastic member 102 and the second elastic member 104, but also supported and adjusted by the floating end plate 110.

[0048] This design allows the pressure seal assembly to have better floating adaptability and adjustment capabilities while maintaining sealing.

[0049] Due to the existence of the floating end plate 110, when the external environment or working conditions change (such as temperature change, vibration, etc.), the floating end plate 110 can float up and down within a certain range, thereby achieving floating adjustment of the seal and ensuring the durability and stability of the sealing effect. The synergistic effect of the floating end plate 110, the positioning plate 100, the sleeve 106 and other components can more effectively prevent the leakage of liquid or gas, especially when subjected to external impact or vibration, which can better reflect its superior sealing performance.

[0050] According to an embodiment of the present invention, a receiving groove 112 is formed on the floating end plate 110 , and the positioning plate 100 is disposed in the receiving groove 112 .

[0051] See also Figure 2 In one embodiment of the present invention, a receiving groove 112 is formed on the floating end plate 110, and the positioning plate 100 is disposed in the receiving groove 112. Such a design not only increases the structural stability of the assembly, but also improves its sealing performance.

[0052] Specifically, the receiving groove 112 on the floating end plate 110 is tailor-made for the positioning plate 100, and its shape and size match those of the positioning plate 100, ensuring that the positioning plate 100 can be firmly placed in the receiving groove 112. This design enables the positioning plate 100 to maintain a relatively stable position when subjected to external pressure or vibration, and is not prone to displacement or shaking.

[0053] At the same time, since the positioning plate 100 is completely or partially embedded in the receiving groove 112 of the floating end plate 110, a close contact surface is formed between the two, which not only increases the friction between the two, but also improves the sealing effect, further preventing the leakage of liquid or gas.

[0054] By setting the positioning disk 100 in the receiving groove 112 of the floating end plate 110, the structural stability of the entire pressure sealing assembly is significantly improved. The tight fit between the positioning disk 100 and the floating end plate 110 enables the assembly to maintain a relatively stable state when subjected to external forces and is not prone to deformation or damage.

[0055] The tight contact surface between the positioning disk 100 and the floating end plate 110 forms an effective sealing layer, effectively preventing the leakage of liquid or gas. By designing the receiving groove 112 to accommodate the positioning disk 100, not only is the structural stability of the assembly improved, but also the space utilization is optimized. This compact design enables the assembly to perform better in a limited space and meet various application requirements.

[0056] According to an embodiment of the present utility model, a mounting portion 114 is formed by recessing the side of the positioning disk 100 facing away from the floating end plate 110 toward the side of the floating end plate 110. The first ends of the first elastic member 102 and the second elastic member 104 are connected to the mounting portion 114.

[0057] See Figure 2 , in an embodiment of the present utility model, a mounting portion 114 is formed by recessing the side of the positioning disk 100 facing away from the floating end plate 110 (i.e., the side facing the first elastic member 102 and the second elastic member 104) toward the side of the floating end plate 110. The first ends of both the first elastic member 102 and the second elastic member 104 are connected to this mounting portion 114, and the mounting portion 114 mentioned here may be a groove-shaped structure.

[0058] The recessed design of the mounting portion 114 enables the first elastic member 102 and the second elastic member 104 to fit more closely on the positioning disk 100 when connected, reducing unstable factors caused by loosening or vibration. The design of the mounting portion 114 optimizes the space layout, enabling the first elastic member 102 and the second elastic member 104 to be more compactly mounted on the positioning disk 100, reducing the volume and weight of the overall assembly. Since the first elastic member 102 and the second elastic member 104 are directly connected to the mounting portion 114, the installation process becomes simpler and faster, improving production efficiency.

[0059] Since the first elastic member 102 and the second elastic member 104 are more stably mounted on the positioning disk 100, they can better play their roles, ensuring that the sleeve 106 is tightly pressed between the positioning disk 100 and the locking member 108 under the action of the locking member 108, thereby improving the sealing performance of the entire pressure sealing assembly. Since the design of the mounting portion 114 optimizes the space layout, the entire pressure sealing assembly is more flexible and convenient in adapting to different sizes and shapes of sealing requirements. Since the installation process is simplified, errors and damages that may occur during the installation process are reduced, thereby reducing the maintenance cost.

[0060] According to an embodiment of the present utility model, a boss structure 116 is formed on the floating end plate 110, a through hole is formed on the positioning disk 100, the boss structure 116 passes through the through hole and the sleeve 106 is sleeved on the boss structure 116.

[0061] See Figure 2 , in an embodiment of the present utility model, the connection manner between the floating end plate 110 and the positioning disk 100 is further optimized. Specifically, a boss structure 116 is formed on the floating end plate 110, and a through hole is correspondingly formed on the positioning disk 100. The boss structure 116 is precisely inserted into the through hole of the positioning disk 100, and the sleeve 106 is sleeved on the boss structure 116.

[0062] The cooperation between the boss structure 116 and the through hole makes the connection between the floating end plate 110 and the positioning disk 100 tighter and more stable. This connection manner can effectively prevent the relative displacement between the two, thereby ensuring the stability of the entire pressure sealing assembly during operation, and optimizing the spatial layout of the overall assembly. This design not only reduces the volume of the assembly, but also is conducive to improving the installation efficiency. The sleeve 106 is sleeved on the boss structure 116, and due to the tight fit between the boss structure 116 and the through hole, the sealing effect is further enhanced.

[0063] Due to the tight fit between the boss structure 116 and the through hole and the sleeving effect of the sleeve 106, the pressure sealing assembly further improves its sealing effect on the basis of maintaining the original excellent sealing performance. This makes the assembly more suitable for occasions with higher requirements for sealing performance. The cooperation between the boss structure 116 and the through hole makes the connection between the floating end plate 110 and the positioning disk 100 more stable and reliable. This design can effectively prevent the deformation or damage of the assembly caused by external factors, thereby extending the service life of the assembly. The design of the boss structure 116 and the through hole simplifies the installation process, making the installation of the entire assembly more convenient and fast. At the same time, due to the compactness of the assembly structure, the maintenance cost is also reduced.

[0064] According to an embodiment of the present utility model, the first elastic member 102 and the second elastic member 104 are annular and sleeved on the outer periphery of the boss structure 116.

[0065] See Figure 2, in an embodiment of the present utility model, the first elastic member 102 and the second elastic member 104 are designed as annular structures. That is to say, the first elastic member 102 and the second elastic member 104 can be arranged as disc springs, and the first elastic member 102 and the second elastic member 104 are sleeved on the outer periphery of the boss structure 116 on the floating end plate 110. This design not only ensures the close fit between the elastic member and the boss structure 116, but also further enhances the structural stability and sealing performance of the entire pressure sealing assembly.

[0066] Specifically, one end of each of the annular first elastic member 102 and the second elastic member 104 is connected to the mounting portion 114 of the positioning disc 100, and the other ends are abutted against each other or close to each other, forming an elastic sealing ring surrounding the boss structure 116. When the locking member 108 applies pressure to the sleeve 106, the sleeve 106 will push the first elastic member 102 downward, thereby causing compression between the first elastic member 102 and the second elastic member 104, forming a tight sealing interface.

[0067] The annular first elastic member 102 and the second elastic member 104 can be evenly distributed on the outer periphery of the boss structure 116, forming a continuous sealing interface. This design effectively reduces the leakage points and improves the reliability of the seal. The design of the annular elastic member enables it to better withstand forces from all directions, thereby enhancing the structural stability of the entire pressure sealing assembly. At the same time, due to the close fit between the elastic member and the boss structure 116, loosening or deformation caused by vibration or impact is also reduced.

[0068] According to an embodiment of the present utility model, a positioning groove 118 is formed on the side of the sleeve 106 facing the locking member 108, and the end of the locking member 108 abuts against the positioning groove 118.

[0069] See Figure 2 , in an embodiment of the present utility model, a positioning groove 118 is designed on the side of the sleeve 106 facing the locking member 108, and the end of the locking member 108 precisely abuts in this positioning groove 118.

[0070] This design ensures that when the locking member 108 applies pressure, the force can act accurately and stably on the sleeve 106 without deviation or sliding. At the same time, the presence of the positioning groove 118 also makes the connection between the locking member 108 and the sleeve 106 tighter and more reliable, further improving the stability and safety of the entire device.

[0071] The design of the positioning groove 118 enables the end of the locking member 108 to be accurately inserted therein, thereby ensuring the accurate transmission of the locking force and avoiding the dispersion and waste of force. Due to the tight fit between the locking member 108 and the positioning groove 118, the entire connection structure becomes more stable and is not easily interfered by external factors. This stability is crucial for ensuring the sealing performance.

[0072] According to an embodiment of the present invention, the sleeve 106 is formed with a transition chamfer towards the edge of the positioning disk 100, and the second end of the first elastic member 102 abuts against the transition chamfer.

[0073] See Figure 2 , in an embodiment of the present invention, the sleeve 106 is formed with a transition chamfer towards the edge of the positioning disk 100. This transition chamfer not only optimizes the structure but also plays a role in guiding the first elastic member 102. The second end of the first elastic member 102 will abut against this transition chamfer, ensuring that when under pressure, the first elastic member 102 can deform smoothly while maintaining stable contact with the sleeve 106 and the positioning disk 100.

[0074] The design of the transition chamfer makes the edge of the sleeve 106 smoother, reduces stress concentration, and improves the overall strength of the structure. The second end of the first elastic member 102 abuts against the transition chamfer, enabling the first elastic member 102 to deform along a predetermined path when under the pressure of the locking member 108, thereby playing a more effective sealing role.

[0075] According to an embodiment of the present invention, it further includes an end plate 120. The locking member 108 passes through the end plate 120, and a groove 122 adapted to the sleeve 106 is formed on the end plate 120.

[0076] See Figure 2 , in an embodiment of the present invention, in addition to the previously described floating end plate 110, positioning disk 100, first elastic member 102, second elastic member 104, and sleeve 106, an end plate 120 is introduced as a new component. This end plate 120 is designed with a hole for the locking member 108 to pass through. At the same time, a groove 122 adapted to the sleeve 106 is formed on the end plate 120. The shape and size of this groove 122 match those of the sleeve 106, enabling the sleeve 106 to be stably placed in the groove 122.

[0077] By introducing the end plate 120, the structure of the entire pressure sealing assembly is further enhanced. The cooperation between the end plate 120 and the locking member 108, as well as the adaptation of the groove 122 and the sleeve 106, enable the assembly to maintain a relatively stable structure when subjected to external pressure or vibration, reducing the risk of failure caused by structural loosening. The adaptation design of the groove 122 and the sleeve 106 allows the sleeve 106 to form a tighter contact on the end plate 120, thereby improving the sealing performance.

[0078] An embodiment of the second aspect of the present utility model provides a battery, including the above-mentioned pressure sealing assembly.

[0079] According to the battery provided by the embodiment of the second aspect of the present utility model, by introducing the pressure sealing assembly and through its unique elastic clamping design, excellent sealing performance is provided for the battery. This can not only prevent electrolyte leakage but also effectively isolate moisture, dust and other impurities in the external environment, ensuring the cleanliness and stability of the internal environment of the battery. The excellent sealing performance enables the internal structure and materials of the battery to be not easily damaged when facing external forces such as vibration and impact, greatly reducing the risk of safety accidents such as battery leakage and short circuit. In addition, even under extreme conditions such as high temperature and low temperature, the battery can maintain stable performance, further enhancing its safety. Due to the good sealing effect of the pressure sealing assembly, the electrolyte and other key materials inside the battery are not easily eroded and polluted by the external environment, thereby extending the service life of the battery. In addition, the durability of the sealing assembly also ensures that the battery can still maintain good performance during long-term use. The pressure sealing assembly adopts an elastic design, which can adapt to the pressure changes under different environmental conditions and maintain a stable sealing effect. This enables the battery to maintain excellent performance in various application scenarios and has good adaptability. At the same time, it can also solve the problem of inconsistent pressing force caused by assembly and process errors of multiple batteries in a stack.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A pressure sealing assembly, characterized in that: include: A positioning plate (100), wherein a first elastic member (102) and a second elastic member (104) are connected to the positioning plate (100), a first end of the first elastic member (102) and a first end of the second elastic member (104) are connected to the positioning plate (100), and a second end of the second elastic member (104) abuts against a side of the first elastic member (102) facing the positioning plate (100); A sleeve (106) is pressed onto a side of the first elastic member (102) facing away from the positioning plate (100); The locking member (108) is in contact with an end of the sleeve (106) facing away from the positioning plate (100), and the sleeve (106) is suitable for being pressed between the sleeve (106) and the locking member (108) under the action of the first elastic member (102).

2. The pressure sealing assembly according to claim 1, characterized in that: It also includes a floating end plate (110), wherein the floating end plate (110) is located below the positioning plate (100), and the sleeve (106) is arranged on the floating end plate (110).

3. The pressure sealing assembly according to claim 2, characterized in that: A receiving groove (112) is formed on the floating end plate (110), and the positioning plate (100) is arranged in the receiving groove (112).

4. The pressure sealing assembly according to claim 2, characterized in that: A side of the positioning plate (100) facing away from the floating end plate (110) and toward the floating end plate (110) is recessed to form a mounting portion (114), and a first end of the first elastic member (102) and a first end of the second elastic member (104) are connected to the mounting portion (114).

5. The pressure sealing assembly according to claim 2, characterized in that: A boss structure (116) is formed on the floating end plate (110), a through hole is opened on the positioning plate (100), the boss structure (116) is inserted into the through hole, and the sleeve (106) is sleeved on the boss structure (116).

6. The pressure sealing assembly according to claim 5, characterized in that: The first elastic member (102) and the second elastic member (104) are annular and are sleeved on the outer circumference of the boss structure (116).

7. The pressure sealing assembly according to any one of claims 1 to 6, characterized in that: A positioning groove (118) is formed on one side of the sleeve (106) facing the locking member (108), and an end portion of the locking member (108) abuts against the positioning groove (118).

8. The pressure sealing assembly according to any one of claims 1 to 6, characterized in that: A transition chamfer is formed on the edge of the sleeve (106) facing the positioning plate (100), and the second end of the first elastic member (102) abuts against the transition chamfer.

9. The pressure sealing assembly according to any one of claims 1 to 5, characterized in that: It also includes an end plate (120), the locking member (108) is inserted into the end plate (120), and a groove (122) adapted to the sleeve (106) is formed on the end plate (120).

10. A battery, characterized in that: Comprising a pressure sealing assembly as claimed in any one of claims 1 to 9.

Images