Top cover assembly for battery, battery and vehicle

Abstract

The utility model discloses a top cover assembly for a battery, the battery and a vehicle, the top cover assembly comprises a top cover body and a lower plastic assembly, the lower plastic assembly is arranged on one side of the top cover body in the thickness direction, the lower plastic assembly comprises a temperature-resistant part and a stop part, and a first matching part is formed on the temperature-resistant part; the stop part is arranged at the end part of the temperature-resistant part in the extending direction and is suitable for positioning a battery cell of the battery; and a second matching part which is matched and connected with the first matching part is formed on the stop part. According to the top cover assembly disclosed by the utility model, the lower plastic assembly is divided into the temperature-resistant part and the stop part which are connected with each other, and the lower plastic assembly can be formed by combining various materials, so that accurate positioning and stable fixation of the battery cell are realized, and meanwhile, the safety and the stability of the battery in a high-temperature environment are improved.

Description

Technical Field

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

[0002] With the rapid development of electric equipment, the requirements for battery performance and safety are increasing. As the core component of electric equipment, the design and manufacturing quality of battery structure are directly related to the performance and service life of the entire equipment. Among the battery structure, the lower plastic is a key component, which undertakes multiple functions such as insulation between the shell and the battery, stabilizing the internal winding core, and assembly positioning.

[0003] Laser welding of the cover is an important step in the manufacturing process of the battery cell. The high temperature generated during laser welding will have a thermal impact on the adjacent lower plastic, causing the lower plastic to deform, which will not only affect the insulation quality between the battery cell and the shell, reducing the safety of the equipment, but also the deformed lower plastic may hinder the assembly when the battery cell is inserted into the shell, increasing the difficulty of assembly and reducing production efficiency. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a top cover assembly. According to the top cover assembly of the utility model, by dividing the lower plastic assembly into a temperature-resistant component and a stopper component connected to each other, the lower plastic assembly can be formed by a combination of multiple materials, thereby achieving accurate positioning and stable fixation of the battery cell, and at the same time improving the safety and stability of the battery in a high temperature environment.

[0005] The utility model also provides a battery with the top cover assembly.

[0006] The utility model also provides a vehicle with the battery.

[0007] According to the utility model, the top cover assembly is used for a battery, and the top cover assembly includes: a top cover body; a lower plastic assembly, which is arranged on one side of the top cover body in the thickness direction, and the lower plastic assembly includes: a temperature-resistant component, on which a first matching portion is formed; a stop component, which is arranged at the end of the temperature-resistant component in the extension direction and is suitable for positioning the battery cell, and on which a second matching portion is formed that is matched and connected with the first matching portion.

[0008] According to the top cover assembly of the utility model, by setting the lower plastic assembly on one side of the top cover body in the thickness direction, the lower plastic assembly can achieve insulation between the top cover body and the battery cell, and play a role in positioning the battery cell, so that the battery cell is accurately positioned and the assembly efficiency is improved. The lower plastic assembly includes a heat-resistant component and a stopper component, and the stopper component is arranged at the end of the heat-resistant component in the extension direction, so that the stopper component can cooperate with the battery cell to fix the position of the battery cell. The heat-resistant component and the stopper component are connected to each other to form the lower plastic assembly, so that the lower plastic assembly can be formed by combining different materials to meet different performance requirements. Specifically, the heat-resistant component can be made of a material with good high-temperature stability, which can effectively resist the high temperature generated during laser welding, reduce the influence of high temperature on the lower plastic assembly, and make the lower plastic assembly less likely to deform. Therefore, the top cover assembly can effectively ensure the insulation effect between the battery cell and the shell, and improve safety; and the stopper component can be made of a material with elasticity and wear resistance, so that the battery cell can be accurately positioned and stably fixed during the assembly process, and reduce friction during the assembly process, reducing the difficulty of assembly. By setting a first matching portion on the temperature-resistant component and a second matching portion on the stop component, the first matching portion and the second matching portion can be matched and fixed to each other, so that the temperature-resistant component and the stop component can be tightly connected to form a stable overall structure and serve as a lower plastic component.

[0009] According to some embodiments of the utility model, the stop component is provided on the side of the top cover body facing the battery core, the stop component is constructed into multiple parts and is arranged at intervals on the top cover body, and the second matching portion is provided between two adjacent stop components; the temperature resistant component is provided between two adjacent stop components.

[0010] According to some embodiments of the utility model, a first overlapping protrusion is formed on the stop component, and a second overlapping protrusion that cooperates with the first overlapping protrusion is provided on the temperature-resistant component; wherein the first overlapping protrusion and the second overlapping protrusion are respectively provided with the first matching part and the second matching part and one of the first matching part and the second matching part is constructed as a matching groove, and the other of the first matching part and the second matching part is constructed as a matching protrusion that is plugged and matched with the matching groove.

[0011] According to some embodiments of the utility model, the first overlapping protrusion and the second overlapping protrusion extend in the extension direction of the top cover body respectively, an overlapping edge is formed between the first overlapping protrusion and the second overlapping protrusion, and the first matching portion and the second matching portion are constructed as a plurality of one-to-one corresponding portions and are spaced apart in the extension direction of the overlapping edge.

[0012] According to some embodiments of the present invention, at least one of the plurality of first matching portions is configured as the matching groove, and at least another one of the plurality of first matching portions is configured as the matching protrusion.

[0013] According to some embodiments of the present invention, in the extension direction of the overlapping edge, the matching grooves and the matching protrusions are alternately arranged.

[0014] According to some embodiments of the utility model, the top cover assembly further includes: a welding protection device, which is detachably arranged on the other side of the top cover body in the thickness direction, and the welding protection device is suitable for dissipating heat and cooling during the welding process.

[0015] According to some embodiments of the present invention, the temperature-resistant component is formed with a guide groove, and a guide protrusion is formed on the side of the welding protection device. The guide groove and the guide protrusion both extend in the thickness direction and can selectively cooperate with each other.

[0016] The battery according to the utility model is briefly described below.

[0017] The battery according to the utility model includes the top cover assembly described in any one of the above embodiments. Since the battery according to the utility model includes the top cover assembly described in any one of the above embodiments, the battery according to the utility model can achieve accurate positioning and stable fixation of the battery cell through the temperature-resistant component and the stopper component of the lower plastic component, while improving the safety and stability of the battery in a high temperature environment.

[0018] The vehicle according to the present utility model is briefly described below.

[0019] The vehicle according to the utility model includes the battery described in any one of the above embodiments. Since the vehicle according to the utility model includes the battery described in any one of the above embodiments, the battery has better safety and stability and provides reliable power support for the vehicle.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 It is a schematic diagram of the assembly of a top cover assembly according to an embodiment of the utility model;

[0023] Figure 2is a front view of a top cover assembly according to an embodiment of the utility model;

[0024] Figure 3 is a top view of a top cover assembly according to an embodiment of the utility model;

[0025] Figure 4 is a front view of a lower plastic component of a top cover component according to an embodiment of the utility model;

[0026] Figure 5 It is a schematic diagram of assembling the lower plastic component of the top cover component according to one embodiment of the utility model.

[0027] Reference numerals:

[0028] Top cover assembly 1;

[0029] Top cover body 11;

[0030] Lower plastic component 12;

[0031] Temperature-resistant component 121, first matching portion 1211, first overlapping protrusion 1212;

[0032] Stopping member 122, second matching portion 1221, second overlapping protrusion 1222;

[0033] Welding protection device 13. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] In the related art, laser welding of the cover plate is an important step in the manufacturing process of the battery cell. The high temperature generated during laser welding will have a thermal impact on the adjacent lower plastic, causing the lower plastic to deform, which will not only affect the insulation quality between the battery cell and the shell, reducing the safety of the equipment, but also the deformed lower plastic may hinder the assembly when the battery cell is put into the shell, increase the difficulty of assembly, and reduce production efficiency.

[0036] Reference below Figure 1-Figure 5 A top cover assembly 1 according to an embodiment of the present invention is described.

[0037] like Figure 1-Figure 5As shown, according to the utility model, the top cover assembly 1 is used for a battery, and the top cover assembly 1 includes a top cover body 11 and a lower plastic assembly 12. The lower plastic assembly 12 is arranged on one side of the top cover body 11 in the thickness direction. The lower plastic assembly 12 includes a temperature-resistant component 121 and a stop component 122. A first matching portion 1211 is formed on the temperature-resistant component 121; the stop component 122 is arranged at the end of the temperature-resistant component 121 in the extension direction and is suitable for positioning the battery cell, and a second matching portion 1221 is formed on the stop component 122 to be matched and connected with the first matching portion 1211.

[0038] The top cover assembly 1 of the present application is provided with a lower plastic assembly 12 on one side of the top cover body 11 in the thickness direction. The lower plastic assembly 12 can achieve insulation between the top cover body 11 and the battery cell, and plays a role in positioning the battery cell, so that the battery cell is accurately positioned and the assembly efficiency is improved. The lower plastic assembly 12 includes a heat-resistant component 121 and a stop component 122. The stop component 122 is provided at the end of the heat-resistant component 121 in the extension direction, so that the stop component 122 can cooperate with the battery cell to fix the position of the battery cell. The heat-resistant component 121 and the stop component 122 are connected to each other to form the lower plastic assembly 12, so that the lower plastic assembly 12 can be formed by combining different materials to meet different performance requirements. Specifically, the temperature-resistant component 121 can be made of a material with good high-temperature stability, which can effectively resist the high temperature generated during laser welding, reduce the influence of high temperature on the lower plastic component 12, and make the lower plastic component 12 less likely to deform. Therefore, the top cover component 1 can effectively ensure the insulation effect between the battery cell and the shell, and improve safety; and the stop component 122 can be made of a material with elasticity and wear resistance, so that the battery cell can be accurately positioned and stably fixed during the assembly process, and reduce friction during the assembly process, thereby reducing the difficulty of assembly. By setting a first matching portion 1211 on the temperature-resistant component 121 and setting a second matching portion 1221 on the stop component 122, the first matching portion 1211 and the second matching portion 1221 can be matched and fixed to each other, so that the temperature-resistant component 121 and the stop component 122 can be tightly connected to form a stable overall structure and serve as the lower plastic component 12.

[0039] Therefore, the top cover assembly 1 of the present application, by dividing the lower plastic assembly 12 into a temperature-resistant component 121 and a stop component 122 that are connected to each other, the lower plastic assembly 12 can be formed by a combination of multiple materials, thereby achieving precise positioning and stable fixation of the battery cell, while improving the safety and stability of the battery in a high temperature environment.

[0040] According to some embodiments of the present invention, Figure 4 and Figure 5As shown, a stopper 122 is provided on the side of the top cover body 11 facing the battery cell. The stopper 122 is structured as a plurality of stopper 122s and is arranged at intervals on the top cover body 11. A second matching portion 1221 is provided between two adjacent stopper 122s; and the temperature-resistant component 121 is provided between two adjacent stopper 122s. By providing a plurality of stopper 122s arranged at intervals on the side of the top cover body 11 facing the battery cell, accurate positioning and stable fixation of the battery cell are achieved, so that each stopper 122 can form a good match with the battery cell, so that the battery cell can maintain an accurate position. At the same time, by setting the temperature-resistant component 121 between two adjacent stop components 122, a second matching portion 1221 is set between the two adjacent stop components 122 to connect the two ends of the temperature-resistant component 121 to the adjacent stop components 122 respectively, so that the lower plastic component 12 forms a stable overall structure, and the temperature-resistant component 121 between the two adjacent stop components 122 can effectively exert its high temperature resistance characteristics to resist the influence of high-temperature processes such as laser welding on the top cover component 1.

[0041] According to some embodiments of the present invention, Figure 4 and Figure 5As shown, a first overlapping protrusion 1212 is formed on the stop component 122, and a second overlapping protrusion 1222 that cooperates with the first overlapping protrusion 1212 is arranged on the temperature-resistant component 121; wherein the first overlapping protrusion 1212 and the second overlapping protrusion 1222 are respectively provided with a first matching portion 1211 and a second matching portion 1221 and one of the first matching portion 1211 and the second matching portion 1221 is constructed as a matching groove, and the other of the first matching portion 1211 and the second matching portion 1221 is constructed as a matching protrusion that is plugged into and matched with the matching groove. By providing the first overlapping protrusion 1212 on the stop member 122 and providing the second overlapping protrusion 1222 on the temperature-resistant member 121, the first overlapping protrusion 1212 and the second overlapping protrusion 1222 can overlap and fit with each other and be fixed, thereby achieving accurate docking and stable connection between the stop member 122 and the temperature-resistant member 121, simplifying the assembly process, improving assembly efficiency, and enhancing the overall structural strength of the top cover assembly 1. By providing the first matching portion 1211 on the first overlapping protrusion 1212 and providing the second matching portion 1221 on the second overlapping protrusion 1222, the first matching portion 1211 and the second matching portion 1221 can fit with each other during the overlapping process, thereby making the assembly process simpler and more efficient. By configuring one of the first matching portion 1211 and the second matching portion 1221 as a matching groove, and configuring the other of the first matching portion 1211 and the second matching portion 1221 as a matching protrusion that plugs into the matching groove, the connection strength and stability between the stop component 122 and the temperature-resistant component 121 are further enhanced. Specifically, the matching protrusion can be accurately inserted into the matching groove to form a tight plug-in fit, so that the stop component 122 and the temperature-resistant component 121 are more firmly connected to each other. At the same time, the shape, size and position of the matching groove and the matching protrusion match each other, so that the matching groove and the matching protrusion can be accurately docked to achieve a stable connection effect.

[0042] According to some embodiments of the present invention, Figure 4 and Figure 5As shown, the first overlapping protrusion 1212 and the second overlapping protrusion 1222 extend in the extension direction of the top cover body 11 respectively, and an overlapping edge is formed between the first overlapping protrusion 1212 and the second overlapping protrusion 1222, and the first matching portion 1211 and the second matching portion 1221 are configured as a plurality of one-to-one corresponding ones and are arranged at intervals in the extension direction of the overlapping edge. The first overlapping protrusion 1212 protrudes and extends from one side of the stop member 122, while the second overlapping protrusion 1222 protrudes and extends from the corresponding position of the temperature-resistant component 121 at different heights, so that the first overlapping protrusion 1212 and the second overlapping protrusion 1222 are staggered and overlapped at different heights to form an overlapping edge between the first overlapping protrusion 1212 and the second overlapping protrusion 1222, thereby achieving a more accurate and stable connection between the stop member 122 and the temperature-resistant component 121. By constructing the first mating portion 1211 and the second mating portion 1221 into a plurality of one-to-one corresponding portions and arranging them at intervals in the extension direction of the overlapping edge, the stability of the connection is further enhanced, so that each first mating portion 1211 can be precisely docked with the corresponding second mating portion 1221 to form a tight plug-in fit.

[0043] According to some embodiments of the utility model, at least one of the plurality of first matching parts 1211 is configured as a matching groove, and at least another one of the plurality of first matching parts 1211 is configured as a matching protrusion. By configuring at least one of the plurality of first matching parts 1211 as a matching groove, at least one of the plurality of second matching parts 1221 is configured as a matching protrusion and is plugged and matched with the matching groove; correspondingly, when at least another one of the plurality of first matching parts 1211 is configured as a matching protrusion, at least another one of the plurality of second matching parts 1221 is configured as a matching groove and is plugged and matched with the matching protrusion, so that when the stop component 122 is connected with the temperature-resistant component 121, it is easier to align each matching protrusion with the corresponding matching groove, thereby reducing the possibility of misalignment in plugging.

[0044] According to some embodiments of the utility model, the matching grooves and the matching protrusions are alternately arranged in the extension direction of the overlapping edge. By alternately arranging the matching grooves and the matching protrusions in the extension direction of the overlapping edge, the stop component 122 and the temperature-resistant component 121 can form a more uniform and stable connection structure when they are matched and connected. At the same time, the alternating arrangement of the matching grooves and the matching protrusions also optimizes the assembly process. During assembly, the positions of the matching grooves and the matching protrusions can be clearly seen, so that the assembly work can be completed more accurately, the errors in the assembly process are reduced, and the accuracy and efficiency of the assembly are improved.

[0045] According to some embodiments of the present invention, Figure 1As shown, the top cover assembly 1 also includes: a welding protection device 13, which is detachably arranged on the other side of the top cover body 11 in the thickness direction, and the welding protection device 13 is suitable for heat dissipation and cooling during the welding process. By setting the welding protection device 13, the welding protection device 13 can dissipate heat and cool down during the welding process, effectively reduce the thermal impact of high temperature on the lower plastic component 12, and improve the overall stability and reliability of the top cover assembly 1. The welding protection device 13 is detachably arranged on the cover body, making the installation and disassembly of the welding protection device 13 convenient and quick. When welding work is required, the staff can easily install the welding protection device 13 on the top cover body 11, and use the heat dissipation and cooling function of the welding protection device 13 to effectively reduce the thermal impact of the high temperature generated during the welding process on the lower plastic component 12, thereby improving the overall performance of the top cover assembly 1. After the welding is completed, the welding protection device 13 can also be easily disassembled.

[0046] According to some embodiments of the utility model, the heat-resistant component 121 is formed with a guide groove, and a guide protrusion is formed on the side of the welding protection device 13, and the guide groove and the guide protrusion both extend in the thickness direction and can selectively cooperate with each other. By providing a guide groove on the heat-resistant component 121 and providing a guide protrusion on the side of the welding protection device 13, the guide groove and the guide protrusion both extend in the thickness direction, so that the guide groove and the guide protrusion can cooperate with each other during assembly, thereby achieving the positioning of the welding protection device 13, making the assembly process of the welding protection device 13 more convenient, and improving the assembly accuracy. In addition, the guide groove extending in the thickness direction provided on the heat-resistant component 121 also facilitates the helium inspection. When the battery is subjected to helium inspection, the guide groove can be used as an air intake channel for helium, so that the helium can smoothly enter the area to be inspected, thereby improving the accuracy and reliability of the helium inspection.

[0047] The battery according to the utility model is briefly described below.

[0048] The battery according to the utility model includes the top cover assembly 1 in any one of the above embodiments. Since the battery according to the utility model includes the top cover assembly 1 in any one of the above embodiments, the battery according to the utility model realizes accurate positioning and stable fixation of the battery cell through the temperature-resistant component 121 and the stopper component 122 of the lower plastic component 12, and improves the safety and stability of the battery in a high temperature environment.

[0049] The vehicle according to the present utility model is briefly described below.

[0050] The vehicle according to the utility model includes the battery in any one of the above embodiments. Since the vehicle according to the utility model includes the battery in any one of the above embodiments, the battery in the vehicle according to the utility model has better safety and stability, and provides reliable power support for the vehicle.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0052] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0053] In the description of the present invention, "plurality" means two or more.

[0054] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0055] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0056] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A top cover assembly for a battery, characterized in that: include: Top cover body (11); A lower plastic component (12), the lower plastic component (12) being arranged on one side of the top cover body (11) in the thickness direction, the lower plastic component (12) comprising: A temperature-resistant component (121), wherein a first matching portion (1211) is formed on the temperature-resistant component (121); A stop component (122), the stop component (122) being arranged at the end of the temperature-resistant component (121) in the extension direction and being suitable for positioning the battery cell, the stop component (122) being formed with a second matching portion (1221) that is matched and connected with the first matching portion (1211).

2. The top cover assembly for a battery according to claim 1, characterized in that: The stop component (122) is arranged on the side of the top cover body (11) facing the battery core, the stop components (122) are structured as a plurality and are arranged at intervals on the top cover body (11), and the second matching portion (1221) is arranged between two adjacent stop components (122); The temperature-resistant component (121) is arranged between two adjacent stop components (122).

3. The top cover assembly for a battery according to claim 2, characterized in that: A first overlapping protrusion (1212) is formed on the stop component (122), and a second overlapping protrusion (1222) cooperating with the first overlapping protrusion (1212) is provided on the temperature-resistant component (121); wherein the first overlapping protrusion (1212) and the second overlapping protrusion (1222) are respectively provided with the first matching portion (1211) and the second matching portion (1221), and one of the first matching portion (1211) and the second matching portion (1221) is constructed as a matching groove, and the other of the first matching portion (1211) and the second matching portion (1221) is constructed as a matching protrusion that is plugged and matched with the matching groove.

4. The top cover assembly according to claim 3, characterized in that: The first overlapping protrusion (1212) and the second overlapping protrusion (1222) extend in the extension direction of the top cover body (11) respectively, and an overlapping edge is formed between the first overlapping protrusion (1212) and the second overlapping protrusion (1222). The first matching portion (1211) and the second matching portion (1221) are constructed as a plurality of one-to-one corresponding portions and are spaced apart in the extension direction of the overlapping edge.

5. The top cover assembly according to claim 4, characterized in that: At least one of the plurality of first matching portions (1211) is configured as the matching groove, and at least another one of the plurality of first matching portions (1211) is configured as the matching protrusion.

6. The top cover assembly according to claim 5, characterized in that: In the extending direction of the overlapping edge, the matching grooves and the matching protrusions are arranged alternately.

7. The top cover assembly according to claim 1, characterized in that: Also includes: A welding protection device (13) is detachably arranged on the other side of the top cover body (11) in the thickness direction, and the welding protection device (13) is suitable for dissipating heat and cooling down during the welding process.

8. The top cover assembly according to claim 7, characterized in that: The temperature-resistant component (121) is formed with a guide groove, and the side surface of the welding protection device (13) is formed with a guide protrusion, and the guide groove and the guide protrusion both extend in the thickness direction and can selectively cooperate with each other.

9. A battery, characterized in that: A top cover assembly comprising any one of claims 1-8.

10. A vehicle, characterized in that: A battery comprising the battery of claim 9.

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