Power battery top cover and power battery

Abstract

The utility model relates to a power battery top cover and a power battery, the power battery top cover comprises a cover plate and a plurality of sealing elements, the cover plate is provided with a plurality of mounting holes, one side surface of the cover plate sinks inwards to form a plurality of groove bodies, the plurality of groove bodies are filled with non-Newtonian fluid, the sealing elements cover the groove bodies, and the mounting holes are formed in the mounting holes. And the non-Newtonian fluid is sealed in the groove body. According to the utility model, the plurality of groove bodies are arranged and filled with the non-Newtonian fluid, and when the battery top cover is subjected to external impact, the non-Newtonian fluid generates plastic deformation, so that the impact resistance of the battery is improved, important parts on the battery top cover are protected, and the reliability of the battery is improved.

Description

Technical Field

[0001] The utility model relates to the field of power batteries, and in particular to a power battery top cover and a power battery. Background Art

[0002] Power batteries are an important part of new energy batteries. Their biggest advantages are high energy and no pollution. They are the development direction of new energy vehicles and energy storage power stations. Therefore, the performance of batteries is particularly important. The battery cover is an important part of the battery structure. Important components such as poles and explosion-proof plates are welded to the battery cover. During the use of power batteries, they are inevitably subject to external impacts. When the power battery is subjected to severe external impacts, the battery cover is squeezed and deformed around it, causing the poles or explosion-proof valves to be squeezed, deformed and damaged, resulting in short circuits and fires in the battery or ruptures and leaks in the explosion-proof valve. Therefore, how to enhance the reliability of batteries is a technical problem that needs to be solved in battery technology. Utility Model Content

[0003] The utility model aims to provide a power battery top cover and a power battery, which have a simple structure, can improve the impact resistance of the battery, protect important components on the battery top cover, and improve the reliability of the battery.

[0004] A power battery top cover and a power battery, comprising a cover plate and a plurality of seals, wherein the cover plate is provided with a plurality of mounting holes, one side surface of the cover plate is recessed inwardly to form a plurality of grooves, wherein the plurality of grooves are filled with a non-Newtonian fluid, and the seals are covered on the grooves to seal the non-Newtonian fluid in the grooves.

[0005] In the above technical solution, a number of slots are provided and non-Newtonian fluid is filled in the slots. The non-Newtonian fluid has the characteristic of permanent deformation when subjected to external force, and this deformation has plastic characteristics. Therefore, when the battery is subjected to external impact or extrusion, the non-Newtonian fluid will undergo plastic deformation, thereby improving the impact resistance of the battery and improving the battery reliability.

[0006] Furthermore, the groove body includes a first groove body and a second groove body, the first groove body is arranged around the periphery of the cover plate, and the second groove body is arranged around the outer periphery of the mounting hole.

[0007] In the above technical solution, a first groove body is arranged at the periphery of the cover plate. When the cover plate is subjected to external impact or extrusion, the non-Newtonian fluid sealed in the first groove body can improve the impact resistance of the cover plate. A second groove body is arranged at the periphery of the mounting hole. When the cover plate is subjected to external impact or extrusion, the non-Newtonian fluid sealed in the second groove body can improve the impact resistance of the components arranged in the mounting hole. By arranging the first groove body and the second groove body, the impact resistance of the cover plate is further improved.

[0008] Furthermore, the seal comprises a first seal and a second seal, and the first seal and the second seal are matched with the first slot body and the second slot body respectively.

[0009] In the above technical solution, the first seal and the second seal are used to seal the non-Newtonian fluid, and the non-Newtonian fluid is sealed in the first trough body and the second trough body. The first seal and the second seal are matched with the first trough body and the second trough body respectively, which is conducive to the first seal and the second seal being tightly connected with the first trough body and the second trough body respectively, ensuring that the non-Newtonian fluid is tightly and reliably sealed in the first trough body and the second trough body.

[0010] Furthermore, the groove walls on both sides of the groove body are provided with support platforms, and the surface of the sealing member abuts against the surface of the support platforms.

[0011] In the above technical solution, the support platform has the function of supporting the sealing member to ensure that the non-Newtonian fluid is sealed in the tank body.

[0012] Furthermore, when the sealing member is disposed on the support platform, a surface of the sealing member on a side away from the support platform is flush with a surface of the cover plate.

[0013] In the above technical solution, when the surface of the seal away from the support platform is flush with the surface of the cover plate, on the one hand, the seal and the support platform can be tightly connected to seal the non-Newtonian fluid, and on the other hand, the battery top cover is more simple and beautiful.

[0014] Furthermore, the mounting hole comprises a pole hole and an explosion-proof hole, the pole hole is used to mount the pole, and the explosion-proof hole is used to mount an explosion-proof plate.

[0015] In the above technical solution, the pole and explosion-proof plate are important components of the battery cover. Disposing non-Newtonian fluid around the pole hole and the explosion-proof hole can effectively protect the impact resistance of the pole and the explosion-proof plate and improve battery reliability.

[0016] Furthermore, the pole hole and the explosion-proof hole are respectively provided with a first annular boss and a second annular boss along their height direction.

[0017] In the above technical solution, the first annular boss and the second annular boss can fix the pole and the explosion-proof plate on the one hand, and on the other hand, when the battery is subjected to external impact or extrusion, the first annular boss and the second annular boss can effectively reduce the impact force, avoid the pole and the explosion-proof plate from being squeezed and deformed, and further improve the reliability of the battery.

[0018] The present application also provides a power battery, comprising the power battery top cover mentioned above. By providing the power battery cover plate mentioned above, the reliability of the power battery is improved.

[0019] Compared with the prior art, the beneficial effect of the utility model is as follows: by setting a plurality of slots, filling the slots with non-Newtonian fluids, and setting seals to seal the non-Newtonian fluids, since the non-Newtonian fluids have the characteristic of permanent deformation when subjected to external forces, when the battery is subjected to external impact or extrusion, the non-Newtonian fluids will undergo plastic deformation, thereby improving the impact resistance of the battery and improving the reliability of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of a power battery top cover according to an embodiment of the utility model.

[0021] Figure 2 The figure is a schematic diagram of the exploded structure of the power battery top cover according to an embodiment of the utility model.

[0022] Figure 3 This is a partial schematic diagram of the first slot body of the power battery top cover of an embodiment of the utility model.

[0023] Figure 4 It is a partial schematic diagram of the pole hole of the power battery top cover according to an embodiment of the utility model.

[0024] Figure 5 It is a partial schematic diagram of the explosion-proof hole of the power battery top cover according to an embodiment of the utility model.

[0025] Description of Figure Numbers

[0026] Cover plate 1, mounting hole 101, pole hole 1011, explosion-proof hole 1012, slot body 102, first slot body 1021, second slot body 1022, support platform 1023, seal 2, first seal 201, second seal 202, non-Newtonian fluid 3, pole 4, explosion-proof plate 5, first annular boss 6, second annular boss 7. DETAILED DESCRIPTION

[0027] The power battery cover and the power battery of the utility model will be further described in detail below in combination with specific embodiments and drawings. The drawings show a preferred embodiment of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein.

[0028] Please refer to Figure 1 and Figure 2 In a preferred embodiment, the power battery top cover and the power battery of the utility model, wherein the power battery top cover comprises a cover plate 1 and a plurality of seals 2, the cover plate 1 is provided with a plurality of mounting holes 101, one side surface of the cover plate 1 is recessed inward to form a plurality of grooves 102, the plurality of grooves 102 are filled with non-Newtonian fluid 3, and the seals 2 are covered on the grooves 102 to seal the non-Newtonian fluid 3 in the grooves 102.

[0029] It can be seen from the above technical solution that by setting a plurality of slots 102 and filling the slots 102 with non-Newtonian fluid 3, it should be noted that the non-Newtonian fluid 3 has the characteristic of being permanently deformed when subjected to external force, and this deformation has the characteristic of plasticity, so when the battery is subjected to external impact or extrusion, the non-Newtonian fluid will undergo plastic deformation, thereby improving the impact resistance of the battery and improving the reliability of the battery. At the same time, the utility model is also provided with a seal 2, which seals the non-Newtonian fluid 3 in the slot 102, further improving the reliability of the battery.

[0030] Specifically, the trough body 102 includes a first trough body 1021 and a second trough body 1022, wherein the first trough body 1021 is disposed around the periphery of the cover plate 1, and the second trough body 1022 is disposed around the outer periphery of the mounting hole 101. The first trough body 101 is disposed around the periphery of the cover plate 1, and when the cover plate 1 is subjected to external impact or extrusion, the non-Newtonian fluid 3 sealed in the first trough body 1021 can improve the impact resistance of the cover plate 1, and the second trough body 1022 is disposed around the outer periphery of the mounting hole 101, and when the cover plate 1 is subjected to external impact or extrusion, the non-Newtonian fluid 3 sealed in the second trough body 1022 can improve the impact resistance of the components disposed in the mounting hole 101, and by disposing the first trough body 1021 and the second trough body 1022, the impact resistance of the cover plate 1 is further improved. In specific implementation, the non-Newtonian fluid 3 is first placed in the first tank body 1021 and the second tank body 1022 respectively, and then the seal 2 is connected to the first tank body 1021 and the second tank body 1022 respectively to ensure that the non-Newtonian fluid 3 is completely sealed in the first tank body 1021 and the second tank body 1022.

[0031] Please refer to Figure 1 and Figure 2 The seal 2 includes a first seal 201 and a second seal 202, and the first seal 201 and the second seal 202 are matched with the first trough body 1021 and the second trough body 1022 respectively. The first seal 201 and the second seal 202 are used to seal the non-Newtonian fluid 3, and seal the non-Newtonian fluid 3 in the first trough body 1021 and the second trough body 1022. The first seal 201 and the second seal 202 are matched with the first trough body 1021 and the second trough body 1022 respectively, which is conducive to the first seal 201 and the second seal 202 being tightly connected with the first trough body 1021 and the second trough body 1022 respectively, ensuring that the non-Newtonian fluid 3 is tightly and reliably sealed in the first trough body 1021 and the second trough body 1022. When the battery top cover 1 is subjected to external impact or extrusion, it is ensured that the non-Newtonian fluid 3 arranged in the first trough body 1021 and the second trough body 1022 undergoes plastic deformation, thereby improving the impact resistance of the battery top cover 1 and improving the reliability of the battery.

[0032] It should be noted that the shapes of the first trough 1021 and the second trough 1022 are not limited. As a preferred embodiment, the first trough 1021 and the second trough 1022 need to be arranged at the periphery of the cover plate 1 and the mounting hole 101, and surround the cover plate 1 and the mounting hole 101 to maximize the impact resistance of the cover plate 1 and the mounting hole 101. At the same time, the sizes of the first trough 1021 and the second trough 1022 are not limited. In specific implementation, the sizes need to be set according to actual conditions to meet the appearance and performance of the cover plate 1.

[0033] Please refer to Figures 3 to 5 , the groove walls on both sides of the groove body 102 are provided with support platforms 1023, and the surface of the seal 2 abuts against the surface of the support platforms 1023. The support platforms 1023 have the function of supporting the seal 2, further fixing the non-Newtonian fluid 3, and ensuring that the non-Newtonian fluid 3 is sealed in the groove body 102. As another embodiment, the support platforms 1023 may not be provided, so that the seal 2 is completely embedded in the groove body 102.

[0034] Specifically, when the seal 2 is disposed on the support platform 1023, the surface of the seal 2 on the side away from the support platform 1023 is flush with the surface of the cover plate 1. When the surface of the seal 2 on the side away from the support platform is flush with the surface of the cover plate 1, on the one hand, the seal 2 and the support platform 1023 can be tightly connected to seal the non-Newtonian fluid 3, and on the other hand, the battery top cover 1 is more concise and beautiful.

[0035] It should be noted that the mounting hole 101 of the utility model includes a pole hole 1011 and an explosion-proof hole 1012, the pole hole 1011 is used to install the pole 4, and the explosion-proof hole 102 is used to install the explosion-proof plate 5. The pole 4 and the explosion-proof plate 5 are important components of the battery cover 1. The non-Newtonian fluid 3 is arranged around the pole hole 1011 and the explosion-proof hole 1012 to effectively protect the impact resistance of the pole 4 and the explosion-proof plate 5, thereby improving the reliability of the battery.

[0036] In addition, in order to further improve the impact resistance of the pole 4 and the explosion-proof disk 5, the pole hole 1011 and the explosion-proof hole 1012 of the utility model are respectively provided with a first annular boss 6 and a second annular boss 7 along their height direction. The first annular boss 6 and the second annular boss 7 can fix the pole 4 and the explosion-proof disk 5 on the one hand, and on the other hand, when the battery is subjected to external impact or extrusion, the first annular boss 6 and the second annular boss 7 can effectively reduce the impact force, avoid the pole 4 and the explosion-proof disk 5 from being extruded and deformed, and further improve the reliability of the battery.

[0037] It should be noted that the non-Newtonian fluid 3 not only has the effect of forming permanent deformation when subjected to external force, but also has the characteristics of lower density than metal materials and higher strength than metal materials. Since the non-Newtonian fluid 3 replaces part of the metal material, the power battery top cover of the utility model is lighter than the traditional power battery top cover.

[0038] The present application also provides a power battery, comprising the power battery top cover mentioned above. By providing the power battery cover plate mentioned above, the reliability of the power battery is improved.

[0039] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A power battery top cover, characterized in that: It includes a cover plate and several sealing members, wherein the cover plate is provided with several mounting holes, one side surface of the cover plate is recessed inward to form several grooves, several of the grooves are filled with non-Newtonian fluids, and the sealing members are covered on the grooves to seal the non-Newtonian fluids in the grooves.

2. The power battery top cover according to claim 1, characterized in that: The groove body includes a first groove body and a second groove body, the first groove body is arranged around the periphery of the cover plate, and the second groove body is arranged around the outer periphery of the mounting hole.

3. The power battery top cover according to claim 2, characterized in that: The sealing member includes a first sealing member and a second sealing member, and the first sealing member and the second sealing member are matched with the first groove body and the second groove body respectively.

4. The power battery top cover according to claim 1, characterized in that: The groove walls on both sides of the groove body are provided with support platforms, and the surface of the sealing member abuts against the surface of the support platforms.

5. The power battery top cover according to claim 4, characterized in that: When the sealing member is disposed on the supporting platform, a surface of the sealing member facing away from the supporting platform is flush with a surface of the cover plate.

6. The power battery top cover according to claim 1, characterized in that: The mounting holes include pole holes and explosion-proof holes. The pole holes are used to mount poles, and the explosion-proof holes are used to mount explosion-proof sheets.

7. The power battery top cover according to claim 6, characterized in that: The pole hole and the explosion-proof hole are respectively provided with a first annular boss and a second annular boss along their height direction.

8. A power battery, characterized in that: Comprising a power battery top cover as described in any one of claims 1 to 7.

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