Insulating part and battery cell

Abstract

The utility model provides an insulating part and a battery cell, the insulating part comprises a lower plastic body, one end of the lower plastic body protrudes downwards to form a lower pressing surface, the other end of the lower plastic body protrudes downwards to form a buffer surface, and the buffer surface is located above the lower pressing surface in the thickness direction of the lower plastic body. At least partial buffer space is formed between the plane of the buffer surface and the plane of the lower pressing surface; the buffer assembly is located in the buffer space and comprises a buffer structure and a buffer plate which are connected, and the buffer structure is connected with the lower plastic body; the buffer structure has a contraction working condition and a non-contraction working condition; when the buffer structure is in a non-contraction working condition, the bottom surface of the buffer plate is flush with the lower pressing surface; when the buffer structure is in a contraction working condition, the bottom surface of the buffer plate is positioned above the lower pressing surface; the buffer space is formed in the lower plastic body and used for installing the buffer assembly, the buffer assembly plays a role in buffering between the lamination and the lower plastic body, and the lamination is prevented from being damaged due to rigid impact between the lamination and the bottom face of the lower plastic body.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of a top cover of an electric core, in particular to an insulating piece and an electric core. BACKGROUND

[0002] The lower plastic bottom surface of the electric core directly contacts the electric core laminations, and the electric core is inevitably in a vibration working condition during production and the whole life cycle. Since the lower plastic bottom surface directly contacts the lamination body, the lamination body is impacted by the lower plastic bottom surface. When the lower plastic body bottom end is narrow, the lamination body is impacted by the narrow end, and the impact force on the lamination body is large, so that the lamination body is damaged. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the application aims to provide an insulating piece and an electric core to solve the problem that the lamination body is damaged due to the impact of the narrow end of the lower plastic.

[0004] To achieve the above purpose, the application provides an insulating piece, which comprises:

[0005] A lower plastic body, one end of the lower plastic body protrudes downward to form a lower pressing surface, and the other end protrudes downward to form a buffer surface. In the thickness direction of the lower plastic body, the buffer surface is located above the lower pressing surface, and a buffer space is formed between the plane where the buffer surface is located and the plane where the lower pressing surface is located.

[0006] A buffer assembly located in the buffer space, comprising a buffer structure and a buffer plate connected with each other, and the buffer structure is connected with the lower plastic body. The buffer structure has a contraction working condition and a non-contraction working condition.

[0007] When the buffer structure is in the non-contraction working condition, the bottom surface of the buffer plate is flush with the lower pressing surface. When the buffer structure is in the contraction working condition, in the thickness direction of the lower plastic body, the bottom surface of the buffer plate is located above the lower pressing surface.

[0008] Optionally, the buffer space comprises a first buffer space and a second buffer space connected with each other, the buffer plate is located in the first buffer space, and at least part of the buffer structure is located in the second buffer space. The second buffer space is a cavity inside the lower plastic body.

[0009] A longitudinal sliding groove is formed on the lower plastic body and communicates with the second buffer space.

[0010] The buffer structure comprises a sliding head, and the sliding head is in sliding connection with the longitudinal sliding groove.

[0011] Optionally, the longitudinal sliding groove comprises an upper groove hole and a lower groove hole in communication, a communication area of the upper groove hole and the lower groove hole is a neck-in area, the sliding head is located in the lower groove hole when the buffer structure is in the non-contracted working condition, and the sliding head enters the upper groove hole through the neck-in area when the buffer structure switches to the contracted working condition.

[0012] Optionally, when the sliding head is located in the upper groove hole, the buffer plate abuts against the lower plastic body.

[0013] Optionally, the buffer structure further comprises a connecting rod connected at two ends of the buffer plate, and the sliding head is arranged at an end of the connecting rod away from the buffer plate.

[0014] Optionally, the buffer structure is an elastic damping structure connected between the buffer plate and the lower plastic body.

[0015] Optionally, the elastic damping structure comprises two oppositely arranged elastic folding arms, and each of the elastic folding arms is provided with a damping hole.

[0016] Optionally, a buffer groove is arranged on a side of the buffer plate close to the lower plastic body.

[0017] Optionally, a process hole is arranged on the buffer plate and penetrates through a bottom of the buffer groove.

[0018] Based on the same inventive concept, the disclosure further provides an electric core comprising the above-mentioned insulation piece.

[0019] As can be seen from the above, the buffer space is arranged on the top surface of the lower plastic body at the end portion where the contact area between the bottom surface of the lower plastic body and the laminated sheet is narrow, and at least part of the buffer space is the space between the plane where the buffer surface is located and the plane where the lower pressing surface is located. The buffer space is used to install the buffer assembly, and the buffer assembly plays a buffering role between the laminated sheet and the lower plastic body, thereby avoiding direct impact of the laminated sheet on the bottom surface of the lower plastic body, and preventing damage to the laminated sheet. The buffer assembly comprises a buffer structure and a buffer plate, and the buffer structure has a contracted working condition and a non-contracted working condition to control the extension and contraction of the buffer plate. When the laminated sheet is in a stable state, the buffer structure is in the non-contracted working condition, the bottom surface of the buffer plate is flush with the lower pressing surface, and the laminated sheet is pressed at the same time, thereby increasing the stability of the laminated sheet. When the laminated sheet is in a vibrating state and the impact force on the bottom surface of the lower plastic body is large, the buffer structure is switched to the contracted working condition under the influence of the impact of the laminated sheet, and the bottom surface of the buffer plate is located above the lower pressing surface, thereby leaving space for the vibration of the laminated sheet and avoiding damage to the laminated sheet caused by direct rigid impact of the laminated sheet on the buffer plate. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the application or the related art, the drawings needed to be used in the embodiments or the related art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 The schematic diagram of the embodiment of the application is shown in the figure.

[0022] Figure 2 The schematic diagram of the embodiment of the application is shown in the figure.

[0023] Figure 3 The schematic diagram of the embodiment of the application is shown in the figure.

[0024] Figure 4 The schematic diagram of the embodiment of the application is shown in the figure.

[0025] Figure 5 The schematic diagram of the embodiment of the application is shown in the figure.

[0026] Figure 6 The schematic diagram of the embodiment of the application is shown in the figure.

[0027] The schematic diagram of the embodiment of the application is shown in the figure. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the application more clear, the application will be further described in detail below with reference to specific embodiments and drawings.

[0029] It should be noted that the technical terms or scientific terms used in the embodiments of the present application should be the general meanings understood by those skilled in the art to which the embodiments of the present application belong, unless otherwise defined. The terms "first", "second", and similar terms used in the embodiments of the present application do not represent any order, number or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connected" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationships, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0030] Based on the background, the top cover of the battery cell is a very important part of the battery cell packaging, which includes an upper plastic and a lower plastic. The main function of the upper plastic and the lower plastic is to seal connect with the battery cell shell to provide a sealed environment for the battery cell, prevent dust, moisture and other impurities from entering the inside of the battery cell, and thus protect the battery cell from damage from the external environment. The bottom surface of the lower plastic directly contacts the battery cell laminations and also serves to support the internal structure of the battery cell and stabilize the laminations, ensuring that the battery cell remains stable during use.

[0031] In the design of the battery cell, the tab is an important part of the battery cell, responsible for conducting the current inside the battery cell. The layout and number of the tab are usually determined according to the capacity of the battery cell, the current output demand, and safety factors. The lower plastic body needs to adapt to the layout of the tab to ensure that the tab can be correctly installed and function. The tab usually divides the bottom surface of the lower plastic body into two ends, one end being narrower and the other end being wider. During the production and entire life cycle of the battery cell, it is inevitable to be in a vibration working condition. Since the bottom surface of the lower plastic directly contacts the laminations, the laminations will be impacted by the bottom surface of the lower plastic. When the laminations collide with the narrower end of the bottom surface of the lower plastic body, the laminations are subjected to a larger impact force, resulting in damage to the laminations.

[0032] To solve the above problems, the present application provides a buffer space on the bottom surface of the lower plastic for installing a buffer assembly. The buffer assembly plays a buffering role between the laminations and the lower plastic body, avoiding direct impact of the laminations on the bottom surface of the lower plastic, which causes damage to the laminations.

[0033] The embodiments of the present application will be described in detail below with reference to the accompanying drawings. Figures 1-6 The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0034] An insulating piece, as shown in Figure 1 , Figure 2 and Figure 3 , comprises:

[0035] A lower plastic body 1, one end of which protrudes downward to form a lower pressing surface 12, and the other end of which protrudes downward to form a buffer surface 14, the buffer surface 14 being located above the lower pressing surface 12 in the thickness direction of the lower plastic body 1, and a buffer space 11 being formed between the plane of the buffer surface 14 and the plane of the lower pressing surface 12;

[0036] A buffer assembly 2 located in the buffer space 11, comprising a buffer structure 21 and a buffer plate 22 connected together, the buffer structure 21 being connected to the lower plastic body 1; the buffer structure 21 having a contracted working condition and a non-contracted working condition;

[0037] When the buffer structure 21 is in the non-contracted working condition, the bottom surface of the buffer plate 22 is flush with the lower pressing surface 12; when the buffer structure 21 is in the contracted working condition, the bottom surface of the buffer plate 22 is located above the lower pressing surface 12 in the thickness direction of the lower plastic body 1.

[0038] Specifically, the original bottom surface of the existing lower plastic body 1 is in contact with the laminations 02 for pressure bonding, and the original bottom surface includes two ends, one end having a larger contact area with the laminations 02, and the other end having a smaller contact area with the laminations 02. The end having a larger contact area will not cause damage to the laminations 02 when the laminations 02 vibrate, and the end having a smaller contact area may cause damage to the laminations 02 when the laminations 02 vibrate. Therefore, the partial buffer space 11 in the present embodiment is provided at the end having a smaller contact area, and the buffer surface 14 is an end surface formed by the partial buffer space 11 provided at the end having a smaller contact area. Therefore, the width of the buffer surface 14 is the same as the width of the end having a smaller contact area, and the width is exemplarily 3-8 mm. The lower pressing surface 12 in the present embodiment refers to the end having a larger contact area, and the width of the lower pressing surface is exemplarily greater than 8 mm.

[0039] Therefore, the present embodiment provides the buffer space 11 at the end of the lower plastic body 1 having a smaller contact area with the laminations 02, and installs the buffer assembly 2 in the buffer space 11, so that the laminations 02 are in contact with the buffer assembly 2 in a buffer mode instead of being directly and rigidly impacted by the lower plastic bottom surface in the case of vibration, thereby reducing the vibration impact damage to the laminations 02.

[0040] In addition, the buffer assembly 2 comprises a buffer structure 21 and a buffer plate 22 connected together. During the assembly of the lower plastic body and the shell of the battery cell, and after the assembly is completed, when the laminated sheet 02 and the lower plastic body are in a stable state, the buffer structure 21 is in a non-contracted working condition, so that the bottom surface of the buffer plate 22 is flush with the lower pressing surface 12, and the buffer plate 22 and the lower pressing surface 12 simultaneously press the laminated sheet 02, thereby improving the pressing stability of the laminated sheet 02. When the laminated sheet 02 is in a vibrating state and the impact force on the bottom surface of the lower plastic body is large, the buffer structure 21 is in a contracted working condition, so that the bottom surface of the buffer plate 22 is located above the lower pressing surface 12 in the thickness direction of the lower plastic body 1, thereby leaving space for the vibration of the laminated sheet 02, and achieving the buffer impact between the laminated sheet 02 and the lower plastic body 1.

[0041] In the embodiment, a buffer space 11 is opened in the direction of the top surface of the lower plastic body 1 at the end of the lower plastic body 1 where the contact area between the bottom surface and the laminated sheet 02 is narrow. The buffer space 11 is used to install the buffer assembly 2, which plays a buffering role between the laminated sheet 02 and the lower plastic body 1, thereby avoiding direct impact between the laminated sheet 02 and the bottom surface of the lower plastic body, which can cause damage to the laminated sheet 02. The buffer assembly 2 comprises a buffer structure 21 and a buffer plate 22. The buffer structure 21 has a contracted working condition and a non-contracted working condition to control the extension and contraction of the buffer plate 22. When the laminated sheet 02 is in a stable state, the buffer structure 21 is in a non-contracted working condition, the bottom surface of the buffer plate 22 is flush with the lower pressing surface 12, and the laminated sheet 02 is simultaneously pressed, thereby increasing the stability of the laminated sheet 02. When the laminated sheet 02 is in a vibrating state and the impact force on the bottom surface of the lower plastic body is large, the buffer structure 21 is switched to a contracted working condition under the influence of the impact of the laminated sheet 02, and the bottom surface of the buffer plate 22 is located above the lower pressing surface 12, thereby leaving space for the vibration of the laminated sheet 02 and avoiding damage to the laminated sheet 02 caused by direct rigid impact of the laminated sheet 02 on the buffer plate 22.

[0042] In some embodiments, as shown in Figure 1 、 Figure 2 and Figure 3 , the buffer space 11 comprises a first buffer space 111 and a second buffer space 112 connected together. The buffer plate 22 is located in the first buffer space 111, and at least part of the buffer structure 21 is located in the second buffer space 112. The second buffer space 112 is a cavity inside the lower plastic body 1.

[0043] A longitudinal sliding groove 13 is opened on the lower plastic body 1 and communicates with the second buffer space 112.

[0044] The buffer structure 21 comprises a sliding head 211 which is in sliding connection with the longitudinal sliding groove 13.

[0045] In addition, the buffer structure 21 further comprises a connecting rod 212 connected at both ends of the buffer plate 22, and the sliding head 211 is arranged at one end of the connecting rod 212 away from the buffer plate 22.

[0046] Specifically, the first buffer space 111 is enclosed by the battery shell, the laminated sheet 02 and the bottom surface of the lower plastic body 1, and the second buffer space 112 is the internal cavity of the lower plastic body 1. The upper part of the connecting rod 212 is located in the first buffer space 111 and connected with the longitudinal sliding groove 13 through the sliding head 211. When the buffer structure 21 is in the non-shrinking working condition, the lower part of the connecting rod 212 extends into the first buffer space 111 and is connected with the buffer plate 22 located in the first buffer space 111. When the buffer structure 21 is in the shrinking working condition, the lower part of the connecting rod 212 extends into the first buffer space 111 and is connected with the buffer plate 22 located in the first buffer space 111, or the lower part of the connecting rod 212 is still located in the second buffer space 112 and connected with the buffer plate 22 located in the first buffer space 111. That is, whether the buffer structure 21 is in the non-shrinking working condition or in the shrinking working condition, part or even all of the connecting rod 212 is located in the second buffer space, that is, the first buffer space 111 is mainly used for arranging the buffer plate 22, so that the buffer plate 22 is relatively close to or abuts against the upper plastic body 1, so as to realize the small shrinkage of the buffer plate 22 and avoid the instability caused by the large stroke of the buffer plate 22 due to the large first buffer space 111.

[0047] In addition, as shown in Figure 3 and Figure 4 The sliding head 211 is in sliding connection with the longitudinal sliding groove 13, and the connecting rod 212 is used for mounting the sliding head 211. When the laminated sheet 02 and the buffer plate 22 vibrate, the buffer plate 22 is impacted by the laminated sheet 02. Under the action of the impact force, the connecting rod 212 drives the sliding head 211 to move upwards, and the sliding head 211 moves upwards in the longitudinal sliding groove 13, so as to avoid the continuous impact between the buffer plate 22 and the lower plastic body 1, realize the switching of the buffer structure 21 from the non-shrinking state to the shrinking state, and realize the upward movement of the buffer plate 22 to avoid the mutual impact between the buffer plate 22 and the laminated sheet 02.

[0048] In the embodiment, the first buffer space 111 and the second buffer space 112 provide the buffer plate 22 and the buffer structure 21 with scalable space, the buffer structure 21 is scaled in the first buffer space 111 and the second buffer space 112 to control the scaling of the buffer plate 22, to avoid the buffer plate 22 and the laminated sheet 02 from colliding with each other due to vibration, to achieve the stress buffering between the lower plastic and the laminated sheet 02, in addition, the second buffer space 112 is the internal cavity of the lower plastic body 1, the lower plastic body 1 is provided with a longitudinal sliding groove 13 which is in communication with the second buffer space 112, and the sliding head 211 is in sliding connection with the longitudinal sliding groove 13, therefore, the lower plastic body 1 provides the buffer structure 21 in the second buffer space 112 with a mounting position, and through the cooperation and sliding of the sliding head 211 and the longitudinal sliding groove 13, when the buffer plate 22 is impacted by the laminated sheet 02, the buffer structure 21 is automatically switched from the non-shrinking state to the shrinking state, to realize the automatic upward movement of the buffer plate 22, and to avoid the buffer plate 22 and the laminated sheet 02 from colliding with each other due to vibration.

[0049] In some embodiments, as shown in Figure 3 and Figure 4 The longitudinal sliding groove 13 includes an upper slot hole 131 and a lower slot hole 132 which are in communication, and the communication area of the upper slot hole 131 and the lower slot hole 132 is a neck area 133 which is inwardly contracted, when the buffer structure 21 is in the non-shrinking working condition, the sliding head 211 is located in the lower slot hole 132, when the buffer structure 21 is switched to the shrinking working condition, the sliding head 211 enters the upper slot hole 131 through the neck area 133.

[0050] For example, the diameters of the upper slot hole 131 and the lower slot hole 132 are both 1.6 mm, the closest distance between the two opposite longitudinal slot walls of the longitudinal sliding groove 13 is 1.4 mm, and the outer diameter of the sliding head 211 is between 1.4 mm and 1.6 mm. The center distance between the upper slot hole 131 and the lower slot hole 132 is 1.0 mm, and the movable distance of the lower plastic is determined by the center distance between the upper slot hole 131 and the lower slot hole 132, if the distance is too short, the damage to the laminated sheet 02 is not obvious, if the distance is too large, the buffer plate 22 may be located below the lower pressing surface 12 when the buffer structure 21 is in the non-shrinking working condition, that is, the internal space of the battery cell is occupied, affecting the energy density of the battery cell. The sliding head 211 is a convex column structure, and the end of the principle connecting rod 212 of the convex column structure is provided with a round corner to facilitate the assembly of the sliding head 211 and the longitudinal sliding groove 13.

[0051] In addition, the lower plastic body can be made of polypropylene. The polypropylene lower plastic body has excellent corrosion resistance and anti-aging performance in addition to a certain elastic deformation, and has a relatively long service life. The lower plastic body can also be made of polycarbonate. The polycarbonate lower plastic body has excellent water resistance, high temperature resistance, and impact resistance in addition to a certain elastic deformation, and can adapt to various harsh environments. In addition, regardless of the material used, the lower plastic body needs to have a certain elastic deformation capability to ensure that the sliding head 211 extrudes from the lower groove hole 132 to the upper groove hole 131 in the bottleneck area 133, so as to switch the non-contracted state of the buffer structure 21 to the contracted state.

[0052] In this embodiment, when the buffer plate 22 is subjected to an impact force from the laminated sheet 02, the impact force is transmitted to the sliding head 211. Under the action of the impact force, the sliding head 211 extrudes from the lower groove hole 132 to the upper groove hole 131 in the bottleneck area 133, so as to switch the buffer structure 21 from the non-contracted state to the contracted state, thereby realizing the upward movement of the buffer plate 22, avoiding continuous impact between the buffer plate 22 and the lower plastic body 1, and also avoiding mutual impact between the buffer plate 22 and the laminated sheet 02.

[0053] In some embodiments, as shown in Figure 3 When the sliding head 211 is located in the upper groove hole 131, the buffer plate 22 abuts against the lower plastic body 1.

[0054] In this embodiment, the sliding head 211 is located in the upper groove hole 131, that is, the buffer structure 21 is in the contracted state. At this time, the buffer plate 22 abuts against the lower plastic body 1, avoiding the buffer plate 22 from occupying too much second buffer space 112, thereby leaving space for the vibration of the laminated sheet 02, and further avoiding the vibration impact between the laminated sheet 02 and the buffer plate 22.

[0055] In some embodiments, as shown in Figure 5 and Figure 6 The buffer structure 21 is an elastic damping structure connected between the buffer plate 22 and the lower plastic body 1.

[0056] In addition, the elastic damping structure includes two oppositely arranged elastic folding arms 3. Each of the elastic folding arms 3 is provided with a damping hole 31.

[0057] Specifically, the elastic folding arms 3 in the buffer space 11 can be arranged along the length direction of the buffer space 11 to increase the length of the elastic folding arms 3, thereby improving the damping effect of the elastic folding arms 3.

[0058] In addition, the elastic folding arms 3 can be made of polyurethane material or thermoplastic elastomer material. Both polyurethane material and thermoplastic elastomer material have good elasticity and damping performance, and can effectively absorb the impact force from the laminated sheet 02.

[0059] In the present embodiment, during the assembly of the lower plastic and the cell shell, and when the laminations 02 are in a stable state after assembly, the elastic damping structure is in a non-contracted working condition, and the buffer plate 22 abuts against the laminations 02 to increase the stability of the laminations 02. When the laminations 02 are in a vibrating state and the impact force on the lower surface of the lower plastic is large, the elastic damping structure is in a non-contracted working condition, and the elastic folding arm 3 can well absorb the impact force of the laminations 02, relieve the impact force between the laminations 02 and the buffer plate 22, avoid damage to the laminations 02, and further improve the damping effect of the elastic folding arm 3 to further relieve the impact force between the laminations 02 and the buffer plate 22.

[0060] In some embodiments, as shown in Figs. Figure 4 , Figure 5 and Figure 6 , the buffer plate 22 is provided with a buffer groove 4 on one side close to the lower plastic body 1.

[0061] In addition, the buffer plate 22 is provided with a process hole 5 penetrating the bottom of the buffer groove 4.

[0062] Specifically, when the buffer structure 21 is a combination structure of the connecting rod 212 and the sliding head 211, the connecting rod 212 is connected with the two groove walls opposite to the buffer groove 4, respectively, and the design of the buffer groove 4 provides a connection position for the connecting rod 212. No matter what kind of buffer structure 21 is, the buffer groove 4 can play a damping role to further relieve the impact force between the laminations 02 and the buffer plate 22.

[0063] In the process of switching from the non-contracted working condition to the contracted working condition, the electrolyte in the cell shell may flow into the buffer groove 4, so the process hole 5 is provided to enable the electrolyte to flow back into the cell shell through the process hole 5 when the electrolyte accumulates in the buffer groove 4.

[0064] In addition, the process hole 5 can be provided in multiple, for example, three. Too few process holes 5 will slow down the flow of electrolyte from the buffer groove 4, and too many process holes 5 will reduce the strength of the buffer plate 22 and reduce the service life of the buffer plate 22.

[0065] In the present application, the buffer groove 4 not only provides a connection position for the connecting rod 212, but also plays a damping role to further relieve the impact force between the laminations 02 and the buffer plate 22, and the process hole 5 can facilitate the flow of electrolyte from the buffer groove 4, avoid the influence of the reduction of electrolyte on the use of the cell, and also play a damping role to further relieve the impact force between the laminations 02 and the buffer plate 22.

[0066] Based on the same inventive concept, the application also provides an electric core corresponding to the method of any of the above embodiments, comprising the above insulation piece, and having the beneficial effects of the corresponding embodiments, which are not described here again.

[0067] In summary, the lower plastic narrower end part of the utility model is provided with a buffer space 11, the buffer space 11 is used to install a buffer assembly 2, the buffer assembly 2 plays a buffering role between the laminations 02 and the lower plastic body 1, avoids direct rigid impact of the laminations 02 and the lower plastic bottom surface, and causes damage of the laminations 02;

[0068] The utility model further sets up buffer assembly 2, buffer assembly 2 includes the buffer structure 21 and the buffer plate 22 of connecting, the utility model sets up two kinds of buffer structure 21, one buffer structure 21 includes connecting rod 212 and slide head 211, slide head 211 is connected with the slidingly of longitudinal sliding slot 13, connecting rod 212 is used to install slide head 211, when lamination 02 is in the state of vibration, and the impact force of the lower plastic bottom surface is big, the buffer plate 22 is impacted by lamination 02, pushes the buffer plate 22 to the direction of being close to the lower plastic body 1, connecting rod 212 drives slide head 211 to move up, and slide head 211 moves up in longitudinal sliding slot 13, thereby avoiding the continuous impact between the buffer plate 22 and the lower plastic body 1, realizing the switching of buffer structure 21 from the non-shrinking state to the shrinking state, thereby realizing the upward movement of the buffer plate 22, avoiding the mutual impact of the buffer plate 22 and lamination 02 vibration; another buffer structure 21 is the elastic damping structure, in the assembly process of the lower plastic and the electric core shell, and after assembly is completed, when lamination 02 is in the stable state, the elastic damping structure is in the non-shrinking working condition, and the buffer plate 22 abuts against lamination 02, so as to increase the stability of lamination 02, when lamination 02 is in the state of vibration, and the impact force of the lower plastic bottom surface is big, the elastic damping structure is in the non-shrinking working condition, and the elastic folding arm 3 can well absorb the impact force of lamination 02, relieve the impact force between lamination 02 and the buffer plate 22, avoid lamination 02 damage, and the damping hole 31 further improves the damping effect of the elastic folding arm 3, and further relieves the impact force between lamination 02 and the buffer plate 22.

[0069] The two kinds of buffer structure 21 all have the effect of well avoiding the direct impact of the lower plastic and lamination 02, which causes damage of lamination 02.

[0070] Although the application has been described in conjunction with specific embodiments thereof, numerous alternatives, modifications, and variations will be readily apparent to those of ordinary skill in the art in light of the foregoing description. For example, other memory architectures can use the embodiments discussed.

[0071] Embodiments of the present application are intended to embrace all such alterations, modifications, and variations that fall within the scope of the broadest possible interpretation of the application as set forth in the claims. Accordingly, the application should not be limited to the specific embodiments described herein, but should be accorded the full scope that the law entails.

Claims

1. An insulating member, characterized by, The application relates to an insulation piece. The lower plastic body is provided with a lower pressing surface at one end and a buffer surface at the other end, the buffer surface is located above the lower pressing surface in the thickness direction of the lower plastic body, and at least partial buffer space is formed between the plane of the buffer surface and the plane of the lower pressing surface. The buffer assembly is located in the buffer space and comprises a buffer structure and a buffer plate connected with each other, the buffer structure is connected with the lower plastic body, and the buffer structure has a contraction working condition and a non-contraction working condition. When the buffer structure is in the non-contraction working condition, the bottom surface of the buffer plate is flush with the lower pressing surface; and when the buffer structure is in the contraction working condition, the bottom surface of the buffer plate is located above the lower pressing surface in the thickness direction of the lower plastic body.

2. The insulation piece according to claim 1, wherein the buffer space comprises a first buffer space and a second buffer space connected with each other, the buffer plate is located in the first buffer space, and at least partial buffer structure is located in the second buffer space; the second buffer space is a cavity in the lower plastic body. A longitudinal sliding groove is formed in the lower plastic body and communicates with the second buffer space. The buffer structure comprises a sliding head, and the sliding head is in sliding connection with the longitudinal sliding groove. The longitudinal sliding groove comprises an upper slot hole and a lower slot hole connected with each other, the communication area of the upper slot hole and the lower slot hole is a neck-in area, the sliding head is located in the lower slot hole when the buffer structure is in the non-contraction working condition, and the sliding head enters the upper slot hole through the neck-in area when the buffer structure is switched to the contraction working condition.

3. An insulating member according to claim 2, wherein When the sliding head is located in the upper slot hole, the buffer plate abuts against the lower plastic body.

4. An insulating member according to claim 3, wherein The buffer structure further comprises a connecting rod connected at two ends of the buffer plate, and the sliding head is arranged at one end of the connecting rod away from the buffer plate.

5. An insulating member according to claim 3, wherein The buffer structure is an elastic damping structure connected between the buffer plate and the lower plastic body.

6. An insulating member according to claim 1, wherein The elastic damping structure comprises two oppositely arranged elastic folding arms, and each elastic folding arm is provided with a damping hole.

7. An insulating member according to claim 6, wherein The buffer plate is provided with a buffer groove on the side close to the lower plastic body.

8. An insulating member according to claim 1, wherein The buffer plate is provided with a process hole penetrating the groove bottom of the buffer groove.

9. An insulating member according to claim 8, wherein The insulation piece according to any one of claims 1-9.

10. An electric cell characterized by ​

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