Insulating support, cover structure and battery

Abstract

The application relates to the technical field of batteries, in particular to an insulating support, a cover plate structure and a battery. The battery comprises a cover plate body and a pole group assembly arranged in sequence along a first direction, and the insulating support is arranged between the cover plate body and the pole group assembly. The tab of the pole group assembly can be connected with the electrical connector of the cover plate body by bypassing the insulating support. The insulating support comprises a support body and an elastic supporting part. The elastic supporting part comprises a supporting plate and an elastic connector. The supporting plate is used for abutting against the pole group assembly. The support body is provided with a placing gap. The elastic supporting part is arranged in the placing gap. The elastic connector connects the supporting plate and the support body, so that the supporting plate can elastically dislocate in the first direction within a predetermined range relative to the support body. According to the insulating support, the cover plate structure and the battery, the risk of tab insertion is reduced, the relative displacement between the tab and the pole group assembly caused by excessive sinking of the pole group assembly is avoided, and the stability and safety of the battery are ensured.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to an insulating support, cover structure and battery. Background Technology

[0002] In the field of new energy battery technology, the safety design of battery modules or battery packs is a core aspect of ensuring equipment operation and personnel safety. Among these, the safety of venting and structural stability in the event of battery thermal runaway are particularly critical. Currently, in the mainstream battery module or pack structural design in the industry, the battery terminals and explosion-proof valves are usually located in the upper area of ​​the battery. This layout means that the venting direction of the explosion-proof valve directly faces the passenger compartment or personnel activity space of the equipment. When the battery experiences thermal runaway, the high-temperature flames, toxic gases, and splashes emitted by the explosion-proof valve will directly rush into the passenger compartment, posing a significant threat to personal and property safety.

[0003] To address these potential hazards, the industry has explored a bottom-venting design where the explosion-proof valve is positioned below the battery, thus directing the exhaust away from the passenger compartment. However, in this design, the tabs of the battery terminal assembly are positioned below the assembly's weight, making the assembly prone to sinking and displacement due to its own gravity. Because existing structures lack effective buffering and restraint components between the cover plate and the terminal assembly to prevent sinking, and because the tabs are directly connected between them, the lack of clearance and support during sinking makes them highly susceptible to being inserted into the assembly, potentially causing internal short circuits and severely limiting the practical application of the bottom-venting design. Summary of the Invention

[0004] The purpose of this application is to provide an insulating support, a cover plate structure, and a battery, so as to solve to some extent the technical problems existing in the prior art. In the existing structure, there is no effective buffer and constraint component between the cover plate body and the electrode assembly to prevent the electrode assembly from sinking. Furthermore, the electrode tabs are directly connected between the cover plate body and the electrode assembly. When the electrode assembly sinks, the electrode tabs lack avoidance and support guidance, and are easily inserted into the inside of the electrode assembly, causing internal short circuit faults in the electrode assembly. This seriously restricts the practical application of the downward exhaust scheme.

[0005] According to a first aspect of this application, an insulating support is provided for a battery, the battery including a cover plate body and an electrode assembly arranged sequentially along a first direction, the insulating support being disposed between the cover plate body and the electrode assembly, and the electrode tabs of the electrode assembly being able to bypass the insulating support and be connected to an electrical connector of the cover plate body. The insulating support includes a support body and an elastic support portion. The elastic support portion includes a support plate and an elastic connector. The support plate is used to abut against the pole assembly. The support body is provided with a placement notch. The elastic support portion is disposed within the placement notch. The elastic connector connects the support plate and the support body so that the support plate can elastically move relative to the support body within a predetermined range along the first direction.

[0006] Preferably, there are two elastic connectors, and the two ends of the support plate in the second direction are respectively connected to the bracket body via the two elastic connectors, wherein the second direction is perpendicular to the first direction.

[0007] Preferably, the size of the placement notch in the third direction is larger than the size of the elastic support in the third direction, so that misaligned gaps are formed between the edges of the elastic support in the third direction and the edges of the placement notch in the third direction, respectively. The third direction is perpendicular to the second direction, and the first direction is perpendicular to the plane determined by the second direction and the third direction.

[0008] Preferably, the elastic connector is an elastic rib, which protrudes along the first direction toward the side opposite to the pole assembly. The elastic rib is provided with an elastic groove that extends through the elastic rib along its extension direction, and the elastic groove is open on the side of the elastic rib facing the electrode assembly.

[0009] Preferably, the elastic rib is further provided with a plurality of deformation holes, the deformation holes penetrating the insulating support along the first direction, and the deformation holes extending in a direction perpendicular to the extension direction of the elastic rib, and the plurality of deformation holes are spaced apart along the extension direction of the elastic rib.

[0010] Preferably, the bracket body includes a first support portion, a second support portion, and a transition connection portion, wherein the first support portion and the second support portion are spaced apart along the first direction, wherein the first support portion is used to support the pole assembly, the second support portion is used to support the cover plate body, and the transition connection portion connects the first support portion and the second support portion; The installation gap is located in the first support part.

[0011] Preferably, the first support portion includes an insulating support area and an insulating venting area arranged side by side along the second direction, the insulating venting area being provided with a venting hole penetrating the insulating bracket along the first direction, and the placement notch being provided in the insulating support area; In the third direction, the size of the insulating venting area is larger than the size of the insulating support area, so as to form a placement space on both sides of the insulating venting area in the third direction, and the second support is disposed on both sides of the insulating support area in the third direction; The transition connection includes a supporting wall and a transition connecting rib. The supporting wall is disposed around the edge of the insulating venting area and protrudes from the insulating venting area toward the side of the insulating support opposite to the pole assembly. The transition connecting rib extends along the second direction and connects the insulating support area and the second support.

[0012] According to a second aspect of this application, a cover plate structure is provided, including the cover plate body and the insulating support described in any of the above embodiments, thus possessing all the beneficial technical effects of the insulating support, which will not be repeated here.

[0013] Preferably, it further includes a cover plate insulating member, the cover plate insulating member being attached to the side of the cover plate body facing the electrode assembly, and the insulating bracket being disposed between the cover plate insulating member and the electrode assembly; The cover plate insulation component and the insulation bracket are both integrally injection molded parts; And / or, the cover plate insulator and the insulating bracket are engaged.

[0014] According to a third aspect of this application, a battery is provided, which includes the above-described cover plate body, electrode assembly, and insulating support as described in any of the above embodiments, or it includes the electrode assembly and the cover plate structure as described in any of the above embodiments, and thus has all the beneficial technical effects of the insulating support, which will not be repeated here.

[0015] Compared with the prior art, the beneficial effects of this application are as follows: The insulating bracket provided in this application, on the one hand, by placing the insulating bracket between the cover plate body and the electrode assembly, and allowing the electrode tabs of the electrode assembly to bypass the insulating bracket and connect to the cover plate body, effectively guides the path of the electrode tabs, preventing them from being directly pressed by the electrode assembly and avoiding the tendency for the electrode tabs to insert when the electrode assembly sinks, thus reducing the risk of electrode tab insertion from a spatial layout perspective. On the other hand, the insulating bracket includes a bracket body and an elastic support portion. The support plate of the elastic support portion is used to abut against the electrode assembly, and the elastic connector connects the support plate and the bracket body, allowing the support plate to elastically shift relative to the bracket body within a predetermined range along a first direction. When the electrode assembly tends to sink due to its own weight, the support plate will elastically shift synchronously with the sinking of the electrode assembly, and the elastic connector absorbs the impact force of the sinking electrode assembly through its own elastic deformation, providing flexible support for the electrode assembly. This elastic buffering effect can effectively reduce the sinking of the electrode assembly, preventing excessive sinking of the electrode assembly from causing forced relative displacement between the tab and the electrode assembly. This mechanically blocks the power source of the electrode assembly inserted into the tab, further ensuring the structural stability and safety of the battery.

[0016] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is an isometric structural schematic diagram of the insulating bracket provided in the embodiments of this application; Figure 2 for Figure 1 An enlarged structural diagram of the provided insulating support at point A; Figure 3 Another isometric structural schematic diagram of the insulating bracket provided in the embodiments of this application; Figure 4 for Figure 3 An enlarged structural diagram of the provided insulating support at point B; Figure 5 A schematic diagram of the cover plate structure provided in the embodiment of this application in its unfolded state; Figure 6Another isometric structural schematic diagram of the cover plate structure provided in the embodiment of this application in the unfolded state; Figure 7 A cross-sectional structural diagram of a battery provided in an embodiment of this application; Figure 8 This is another cross-sectional structural diagram of the battery provided in an embodiment of this application; Figure 9 This is an isometric structural diagram of the battery in its unfolded state, as provided in an embodiment of this application.

[0019] Figure label: 11-Elastic support part; 111-Support plate; 1111-Misalignment gap; 112-Elastic connector; 1121-Elastic groove; 1122-Deformation hole; 12-Support body; 121-First support part; 1211-Insulated support area; 1212-Insulated venting area; 122-Second support part; 123-Transition connection part; 1231-Transition connecting rib; 1232-Support enclosure; 13-Vent hole; 14-Clamping pin; 15-Connecting piece; 20-Cover plate body; 21-Pole post; 22-Cover plate insulating part; 221-Insulated isolation area; 222-Insulated venting area; 23-Explosion-proof valve; 24-Insulating ring; 25-Insulating sleeve; 26-Clamping hole; 30-Pole group body; 31-Pole lug; F1 - First direction; F2 - Second direction; F3 - Third direction. Detailed Implementation

[0020] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0021] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0022] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0023] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] The following reference Figures 1 to 9 The present application describes an insulating support, cover plate structure, and battery according to some embodiments thereof.

[0026] See Figures 1 to 9 As shown, a first aspect of the embodiments of this application provides an insulating support for a battery. The battery includes a cover plate body 20 and an electrode assembly arranged sequentially along a first direction F1. The insulating support is disposed between the cover plate body 20 and the electrode assembly. The electrode tabs 31 of the electrode assembly can bypass the insulating support and connect to the electrical connector of the cover plate body 20. The insulating support includes a support body 12 and an elastic support portion 11. The elastic support portion 11 includes a support plate 111 and an elastic connector 112. The support plate 111 is used to abut against the electrode assembly. The support body 12 has a mounting notch, and the elastic support portion 11 is disposed within the mounting notch. The elastic connector 112 connects the support plate 111 and the support body 12, so that the support plate 111 can elastically shift relative to the support body 12 within a predetermined range along the first direction F1.

[0027] According to the insulating bracket provided by the above technical features, on the one hand, by setting the insulating bracket between the cover plate body 20 and the electrode assembly, and allowing the electrode tabs 31 of the electrode assembly to bypass the insulating bracket and connect to the cover plate body 20, the path of the electrode tabs 31 is effectively guided, so that the electrode tabs 31 avoid the direct pressure area of ​​the electrode assembly, and avoid the electrode tabs 31 being directly squeezed by the electrode assembly when the electrode assembly sinks, thus reducing the risk of electrode tabs 31 inserting inward from the spatial layout. On the other hand, by the insulating bracket including a bracket body 12 and an elastic support part 11, the support plate 111 of the elastic support part 11 is used to abut against the electrode assembly, and the elastic connector 112 connects the support plate 111 and the bracket body 12, so that the support plate 111 can elastically shift relative to the bracket body 12 within a predetermined range along the first direction F1. When the electrode assembly tends to sink due to its own weight, the support plate 111 will elastically shift synchronously with the sinking of the electrode assembly. The elastic connector 112 absorbs the impact force of the sinking electrode assembly through its own elastic deformation, providing flexible support for the electrode assembly. This elastic buffering effect can effectively reduce the sinking amplitude of the electrode assembly, avoiding excessive sinking of the electrode assembly that would cause forced relative displacement between the tab 31 and the electrode assembly. This mechanically blocks the power source for inserting the electrode assembly into the tab 31, further ensuring the structural stability and safety of the battery.

[0028] Preferably, such as Figures 1 to 6 As shown, there can be two elastic connectors 112. The two ends of the support plate 111 in the second direction F2 can be connected to the bracket body 12 via the two elastic connectors 112 respectively. The second direction F2 intersects the first direction F1. In this way, when the pole assembly sinks due to gravity, the pressure of the pole assembly on the support plate 111 will be evenly transmitted to the bracket body 12 through the elastic connectors 112 at both ends, avoiding the support plate 111 from tilting or deflecting due to unilateral force. The symmetrical elastic support structure can ensure that the elastic slippage of the support plate 111 along the first direction F1 is more stable, effectively preventing the pole assembly from shifting laterally due to support imbalance, thereby avoiding the risk of the electrode tab 31 being inserted into the pole assembly due to abnormal pole assembly posture, and further improving the buffering reliability of the elastic support part 11 for the sinking of the pole assembly.

[0029] like Figures 1 to 8As shown in the figure, F1 can be an example of the first direction F1 mentioned above, and the second direction F2 shown in the figure can be an example of the second direction F2 mentioned above, which can intersect with the first direction F1. Preferably, the figure shows an example where the second direction F2 is perpendicular to the first direction F1, so as to facilitate the application of the structure of most square and cylindrical batteries. Wherein, when the battery is in use, the first direction F1 can be parallel to the direction of gravity. For ease of description, the direction intersecting the second direction F2 is defined as the third direction F3, and the plane defined by the second direction F2 and the third direction F3 can intersect the first direction F1. Preferably, the figure shows an example where the first direction F1 is perpendicular to the plane defined by the second direction F2 and the third direction F3, so as to facilitate the application of the structure of most square and cylindrical batteries. Preferably, the third direction F3 can be perpendicular to the second direction F2, so as to facilitate the application of the structure of most square batteries. Taking the above-mentioned battery as a square battery as an example, the first direction F1 can be the length direction of the square battery, the second direction F2 can be the width direction of the square battery, and the third direction F3 can be the thickness direction of the square battery.

[0030] Preferably, such as Figure 2 and Figure 4 As shown, the size of the mounting notch in the third direction F3 is larger than the size of the elastic support 11 in the third direction F3, so that misalignment gaps 1111 are formed between the edges of the elastic support 11 in the third direction F3 and the edges of the mounting notch in the third direction F3, respectively. Thus, the misalignment gaps 1111 provide the elastic support 11 with a flexible space for movement. During battery use, as the electrode assembly sinks along the first direction F1 (gravity direction), the design of the misalignment gaps 1111 prevents interference or jamming between the elastic support 11 and the edges of the mounting notch, ensuring that the elastic support 11 can flexibly respond to the displacement changes of the electrode assembly, preventing damage to the elastic support 11 due to local jamming, thereby maintaining a long-term stable buffering effect.

[0031] Preferably, such as Figures 1 to 6 As shown in the figure, the above-mentioned elastic connector 112 is an example of an elastic rib. However, it is not limited to this. As long as the support plate 111 and the bracket body 12 can elastically move along the first direction F1 within a predetermined range, the above-mentioned elastic connector 112 can also be other elastic connection structures, such as springs, rubber bands and other elastic band structures.

[0032] like Figures 1 to 6 As shown, the structure of the insulating bracket will be described in detail below, taking the above-mentioned elastic connector 112 as an example of an elastic rib.

[0033] Preferably, such as Figures 1 to 6 As shown, the elastic rib protrudes along the first direction F1 towards the side opposite to the electrode assembly. The elastic rib is provided with an elastic groove 1121 extending through it along its extension direction. This elastic groove 1121 is open on the side of the elastic rib facing the electrode assembly. Thus, when the support plate 111 is subjected to pressure from the electrode assembly, the elastic rib can undergo targeted elastic deformation along the direction of force. The open elastic groove 1121 provides ample space for the deformation of the rib, reducing internal stress during deformation and improving elastic recovery performance. This effectively enhances the buffering efficiency of the elastic connector 112, allowing the support plate 111 to more smoothly achieve elastic slippage when the electrode assembly sinks, effectively absorbing the sinking impact force, preventing excessive sinking of the electrode assembly from compressing the electrode tab 31, and further reducing the risk of short circuit within the electrode tab 31.

[0034] Further, preferably, such as Figure 2 and Figure 4 As shown, the aforementioned elastic rib can also be provided with multiple deformation holes 1122. The deformation holes 1122 penetrate the insulating support along the first direction F1, and extend along a direction perpendicular to the extension direction of the elastic rib (i.e., the second direction F2 shown in the figure). The multiple deformation holes 1122 are spaced apart along the extension direction of the elastic rib (i.e., the third direction F3 shown in the figure). In this way, the deformation holes 1122 can further weaken the local rigidity of the elastic rib, making it easier for the rib to produce uniform deformation under force, reducing stress concentration during the deformation process. At the same time, the spaced deformation holes 1122 can guide the elastic rib to deform along a preset path, avoiding elastic failure caused by irregular deformation. This improves the elastic deformation range and fatigue life of the elastic connector 112, ensuring that it can maintain stable buffering performance even after long-term use or multiple slight sinking of the electrode assembly, thereby continuously ensuring the relative position stability of the electrode tab 31 and the electrode assembly, and reducing the risk of short circuit.

[0035] Preferably, such as Figure 2 and Figure 4 As shown, the aforementioned deformation hole 1122 can be a strip-shaped hole extending along the second direction F2. This strip-shaped hole can extend from the bottom wall of the aforementioned elastic rib along the second direction F2 to the aforementioned support body 12. In this way, the deformation sensitivity at the connection between the elastic rib and the support body 12 can be improved, thereby reducing the risk of breakage at the connection between the elastic rib and the support body 12 due to stress concentration.

[0036] Preferably, such as Figure 4 As shown, the end of the aforementioned misaligned gap 1111 in the second direction F2 is aligned with the end of the deformation hole 1122 of the elastic rib where the corresponding end is located, so as to ensure the consistency of the deformation capacity of the aforementioned elastic support 11 and the aesthetics of the elastic support 11.

[0037] Preferably, such as Figures 1 to 6 As shown, the bracket body 12 and the elastic support part 11 can be integrally molded to ensure the connection stability between the elastic support part 11 and the bracket body 12.

[0038] In an embodiment, such as Figures 1 to 8 As shown, the aforementioned support body 12 may include a first support portion 121, a second support portion 122, and a transition connection portion 123. The first support portion 121 and the second support portion 122 are spaced apart along a first direction F1. The first support portion 121 supports the pole assembly, the second support portion 122 supports the cover plate body 20, and the transition connection portion 123 connects the first support portion 121 and the second support portion 122. The aforementioned placement notch may be provided in the first support portion 121. Thus, as... Figure 7 As shown, the layered support structure formed by the first support portion 121 and the second support portion 122 achieves force separation between the electrode assembly and the cover plate body 20. The first support portion 121 directly bears the gravity and sinking force of the electrode assembly, while the second support portion 122 is connected to the first support portion 121 through the transition connection portion 123, which can distribute the force to the cover plate body 20 and improve the overall load-bearing capacity of the structure. At the same time, the spaced first support portion 121 and the second support portion 122 provide the necessary space for the elastic displacement of the elastic support portion 11, preventing the cover plate body 20 from hindering the displacement of the support plate 111. The transition connection portion 123 enhances the structural integrity of the support body 12, prevents excessive local stress from causing deformation of the support, and ensures that the insulating support can stably perform its supporting and buffering functions for a long time.

[0039] Preferably, such as Figures 1 to 6 As shown, the first support portion 121 may include an insulating support area 1211 and an insulating venting area 1212 arranged side by side along the second direction F2. The insulating venting area 1212 is provided with a venting hole 13 that penetrates the insulating support along the first direction F1. A notch is provided in the insulating support area 1211. Thus, by partitioning the insulating support area 1211 and the insulating venting area 1212, both the support function and the venting function of the insulating support are taken into account.

[0040] Preferably, such as Figures 1 to 6 As shown, on the third direction F3, the size of the insulating venting area 1212 is larger than the size of the insulating support area 1211, so that a mounting space is formed on both sides of the insulating venting area 1212 on the third direction F3. The second support 122 is disposed on both sides of the insulating support area 1211 on the third direction F3. In this way, not only is sufficient venting area of ​​the insulating venting area 1212 guaranteed, but the mounting space on both sides of the insulating support area 1211 on the third direction F3 is also used to provide a compact installation position for the second support 122, thereby improving the structural integration.

[0041] Preferably, such as Figures 1 to 6 As shown, the transition connection 123 may include a supporting wall 1232, which surrounds the edge of the insulating venting area 1212 and protrudes from the insulating venting area 1212 toward the side of the insulating support opposite to the pole assembly. In this way, on the one hand, the supporting wall 1232 enhances the structural strength of the edge of the venting hole 13, preventing the support from deforming due to the impact of high-temperature gas during venting; on the other hand, through the supporting effect of the supporting wall 1232, a venting space is formed between the insulating venting area 1212 and the cover plate body 20. This not only avoids the phenomenon of the venting channel being blocked due to the insulating venting area 1212 and the cover plate body 20 being in contact, but also provides a space and buffer for some gas that is not discharged in time, improving the safety of venting.

[0042] Preferably, such as Figures 1 to 6 As shown, the ends of the second support portion 122 and the transition connecting rib 1231 in the second direction F2 near the insulating venting area 1212 can be connected to the insulating venting area 1212 via the support enclosure 1232, so as to take into account both the connection strength of the second support portion 122 and the transition connecting rib 1231 and the overall insulation of the insulating bracket.

[0043] Preferably, such as Figures 1 to 6 As shown, the transition connection portion 123 may include a transition connection rib 1231, which extends along the second direction F2. The transition connection rib 1231 connects the insulating support area 1211 and the second support portion 122 to achieve a smooth transition connection between the insulating support area 1211 and the second support portion 122, ensuring the integrity of the insulating support area 1211 and the second support portion 122, and avoiding stress concentration at the connection between the insulating support area 1211 and the second support portion 122.

[0044] Optionally, the aforementioned insulating bracket can be an integral injection molded part to balance the structural stability and insulation performance of the insulating bracket.

[0045] See Figures 5 to 9 As shown, a second aspect of the embodiments of this application provides a cover plate structure, which includes the cover plate body 20 and the insulating support described in any of the above embodiments, and thus has all the beneficial technical effects of the insulating support, which will not be repeated here.

[0046] Preferably, such as Figure 6 and Figure 8 As shown, the above-mentioned cover plate structure may also include the above-mentioned electrical connectors and explosion-proof valve 23, such as... Figure 6 and Figure 8As shown in the figure, an example of an electrical connector including two poles 21 can be riveted to the cover body 20. The explosion-proof valve 23 can be disposed between the two poles 21. However, it is not limited to this; as not shown in the figure, the cover structure may also include only one pole.

[0047] Preferably, such as Figures 1 to 9 As shown, the above-mentioned cover plate structure may also include a cover plate insulator 22, which is attached to the side of the cover plate body 20 facing the electrode assembly. An insulating bracket is disposed between the cover plate insulator 22 and the electrode assembly. In this way, the insulation performance between the cover plate and the electrode assembly can be enhanced, and leakage inside the battery can be prevented.

[0048] Preferably, such as Figure 5 As shown, the above-mentioned cover plate structure may also include a connecting piece 15, which can connect the above-mentioned cover plate insulating member 22 and the above-mentioned insulating bracket, so as to facilitate the positioning of both the cover plate insulating member 22 and the insulating bracket.

[0049] Preferably, such as Figure 5 As shown, the connecting piece 15 can extend along the third direction F3, and the connecting piece 15 can connect one end of the plate insulator and the insulating support in the second direction F2. In this way, the insulating support can be unfolded and folded relative to the cover plate insulator 22 by bending the connecting piece 15 (that is, the insulating support and the cover plate insulator 22 are both in the state of being assembled inside the battery), so as to facilitate the assembly operation of the cover plate structure, the insulating support and the above-mentioned electrode assembly.

[0050] Preferably, the cover plate insulating component 22, the insulating bracket, and the connecting piece 15 can be integrally injection molded, which improves the connection strength between the cover plate insulating component 22 and the insulating bracket, reduces assembly gaps, and avoids interference with the path of the electrode tab 31 caused by the relative displacement of the two due to vibration. In addition, integral injection molding can simplify the production process and reduce assembly costs.

[0051] Preferably, such as Figure 3 and Figure 5 As shown, a locking pin 14 can be provided on the side of the insulating bracket facing the cover plate body 20. Correspondingly, a matching locking hole 26 can be provided at the corresponding position of the cover plate insulating component 22. The locking pin 14 and the locking hole 26 can be used to achieve the locking between the insulating bracket and the cover plate insulating component 22, thereby improving the connection strength and stability between the cover plate insulating component 22 and the insulating bracket, ensuring the setting accuracy of the insulating bracket, and avoiding interference to the path of the electrode 31 caused by the relative displacement of the two due to vibration. In addition, the locking facilitates later maintenance and enhances the integrity and manufacturability of the cover plate structure.

[0052] Optionally, as not shown in the figure, the aforementioned locking pin can also be provided on the cover plate insulating component, and the locking hole can be provided on the aforementioned insulating bracket.

[0053] However, it is not limited to this. As long as the cover plate insulating component 22 and the insulating bracket can be locked together, the locking structure of the cover plate insulating component 22 and the insulating bracket is not limited to the structure of the locking pin 14 and the locking hole 26 mentioned above. It can also be other locking structures, such as buckles, slots, etc.

[0054] Preferably, such as Figure 5 As shown, the aforementioned cover plate insulation component 22 may include an insulation isolation area 221 and an insulation venting area 222. When the battery is in the assembled state, the insulation isolation area 221 is disposed opposite to the aforementioned insulation support area 1211 along the first direction F1, and the aforementioned insulation venting area 222 is disposed opposite to the aforementioned sterilization venting area along the first direction F1. The aforementioned insulation venting area 222 may be provided with vent holes to ensure smooth venting of the explosion-proof valve 23.

[0055] Taking the example of the cover plate structure including two pole posts 21, correspondingly, as Figure 5 As shown, the cover plate insulation component 22 may include two insulation isolation areas 221. The two insulation isolation areas 221 are respectively disposed at both ends of the insulation vent 222 in the second direction F2, and the two insulation isolation areas 221 are respectively disposed corresponding to the two pole posts 21 to insulate the pole posts 21 from the side of the cover body facing the pole assembly.

[0056] Preferably, such as Figure 5 As shown, the aforementioned insulating isolation area 221 may be provided with a clearance hole, through which the aforementioned pole post 21 can be exposed, and the edge of the clearance hole can extend into the inner edge of the cover plate body 20 and the pole post 21 to insulate the pole post 21 and the side of the cover plate body facing the pole assembly.

[0057] Correspondingly, such as Figures 1 to 6 As shown, the above-mentioned insulating bracket may include two above-mentioned insulating support areas 1211, which are respectively disposed on both sides of the above-mentioned insulating exhaust area 1212 in the second direction F2, and are respectively disposed corresponding to the above-mentioned insulating isolation area 221.

[0058] Preferably, such as Figure 7 and Figure 8 As shown, the above-mentioned cover plate structure may further include an insulating ring 24, which can be sleeved on the outside of the pole post 21, and at least a portion of the insulating ring 24 can extend between the outer edge of the pole post 21 and the side of the cover body opposite to the pole assembly, so as to achieve insulation between the pole post 21 and the side of the cover body opposite to the pole assembly.

[0059] Preferably, such as Figure 7 and Figure 8As shown, the above-mentioned cover plate structure may also include an insulating sleeve 25. The insulating ring 24 can be sleeved on the outside of the pole post 21, and the insulating sleeve 25 penetrates the cover plate body 20 along the first direction F1. The two ends of the insulating sleeve 25 in the first direction F1 are respectively connected to the insulating ring 24 and the cover plate insulating member 22 to ensure the complete insulation between the pole post 21 and the cover plate body 20.

[0060] See Figures 7 to 9 As shown, a third aspect of the embodiments of this application provides a battery that includes the cover plate body 20, the electrode assembly, and the insulating support described in any of the above embodiments, or that includes the electrode assembly and the cover plate structure described in any of the above embodiments, thus having all the beneficial technical effects of the insulating support and / or the cover plate structure, which will not be repeated here.

[0061] Preferably, such as Figure 7 and Figure 9 As shown, the aforementioned pole assembly may include two pole bodies 30, which can be stacked along a third direction F3. The tabs 31 corresponding to the two pole bodies 30 are all led out from their end faces in the first direction F1, near the side where the cover plate body 20 is located. The tab 31 of one of the two pole bodies 30 can be led out from the end of that pole body 30 in the third direction F3 away from the other two. That is, when the two pole bodies 30 are stacked along the third direction F3, the tabs 31 led out by the two pole bodies 30 are respectively located at both ends of the stacked whole of the two pole bodies 30 in the third direction F3.

[0062] Preferably, such as Figure 7 and Figure 9 As shown, the aforementioned tabs 31 can be connected to the cover plate body 20 from both sides of the insulating support in the third direction F3, bypassing the insulation. Thus, the tabs 31 extending from the pole body 30 can extend along the first direction F1, bend 90 degrees, and directly insert into the gap between the insulating support and the cover plate insulating member 22. This not only shortens the path of the tabs 31, but also effectively avoids the presence of extra tabs 31 between the insulating support and the pole body 30, further preventing the phenomenon of the tabs 31 being inserted into the pole body 30.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An insulating support, characterized in that, A battery for a down-draft system includes a cover plate body and an electrode assembly arranged sequentially along a first direction. An insulating support is disposed between the cover plate body and the electrode assembly, and the tabs of the electrode assembly can bypass the insulating support and connect to the electrical connector of the cover plate body. The insulating support includes a support body and an elastic support portion. The elastic support portion includes a support plate and an elastic connector. The support plate is used to abut against the pole assembly. The support body is provided with a placement notch. The elastic support portion is disposed in the placement notch. The elastic connector connects the support plate and the support body so that the support plate can elastically move relative to the support body within a predetermined range along the first direction. The size of the placement notch in the third direction is larger than the size of the elastic support in the third direction, so that a misaligned gap is formed between the edges of the elastic support in the third direction and the edges of the placement notch in the third direction, respectively. The second direction is perpendicular to the first direction, the third direction is perpendicular to the second direction, and the first direction is perpendicular to the plane determined by the second direction and the third direction. The bracket body includes a first support portion, a second support portion, and a transition connection portion. The first support portion and the second support portion are spaced apart along the first direction. The first support portion is used to support the pole assembly, the second support portion is used to support the cover plate body, and the transition connection portion connects the first support portion and the second support portion. The installation gap is located in the first support part; The first support portion includes an insulating support area and an insulating venting area arranged side by side along a second direction. The insulating venting area is provided with a venting hole that penetrates the insulating bracket along the first direction. The placement notch is provided in the insulating support area. In the third direction, the size of the insulating venting area is larger than the size of the insulating support area, so as to form a placement space on both sides of the insulating venting area in the third direction, and the second support is disposed on both sides of the insulating support area in the third direction; The transition connection includes a supporting wall and a transition connecting rib. The supporting wall is disposed around the edge of the insulating venting area and protrudes from the insulating venting area toward the side of the insulating support opposite to the pole assembly. The transition connecting rib extends along the second direction and connects the insulating support area and the second support. The elastic connector is an elastic rib, which protrudes along the first direction to the side opposite to the pole assembly. The elastic rib is provided with an elastic groove that extends through the elastic rib along its extension direction, and the elastic groove is open on the side of the elastic rib facing the electrode assembly.

2. The insulating bracket according to claim 1, characterized in that, The number of elastic connectors is two, and the two ends of the support plate in the second direction are respectively connected to the bracket body via the two elastic connectors.

3. The insulating bracket according to claim 1, characterized in that, The elastic rib is also provided with a plurality of deformation holes, which penetrate the insulating support along the first direction and extend in a direction perpendicular to the extension direction of the elastic rib. The plurality of deformation holes are spaced apart along the extension direction of the elastic rib.

4. A cover plate structure, characterized in that, It includes the cover plate body and the insulating support according to any one of claims 1 to 3.

5. The cover plate structure according to claim 4, characterized in that, It also includes a cover plate insulator, which is attached to the side of the cover plate body facing the electrode assembly, and the insulating bracket is disposed between the cover plate insulator and the electrode assembly; The cover plate insulation component and the insulation bracket are both integrally injection molded parts; And / or, the cover plate insulator and the insulating bracket are engaged.

6. A battery, characterized in that, Includes the cover plate body, the pole assembly, and the insulating support according to any one of claims 1 to 3; Alternatively, it may include the electrode assembly and the cover plate structure as described in claim 4 or 5.

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