Battery pack and vehicle
By setting reinforcement ribs on the substrate of the upper cover of the battery pack, the strength of the upper cover of the battery pack is enhanced, and the problem of insufficient safety performance of the upper cover of the existing battery pack is solved, and the overall safety performance of the battery pack is improved.
Patent Information
- Application Number
- CN202420316979.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-20
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-02-20
AI Technical Summary
The safety performance of the existing battery pack cover is insufficient and cannot meet users' high safety performance needs for electric vehicle battery packs.
By providing a first reinforcement rib and a second reinforcement rib on the first substrate and the second substrate of the upper cover of the battery pack, extending in the width direction and the length direction of the vehicle, the overall strength of the upper cover of the battery pack is enhanced.
It increases the strength of the upper cover of the battery pack, reduces the collapse and deformation of the battery pack during collision, protects the internal battery cell, and reduces the risk of liquid leakage, fire, and explosion of the battery cell.
Smart Images
Figure CN222619959U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicles, and in particular to a battery pack and a vehicle. Background Art
[0002] As electric vehicles become increasingly mature, people have higher and higher requirements for electric vehicle battery packs, including higher requirements for the safety performance of battery packs.
[0003] A battery pack generally includes a battery pack cover, a battery pack shell and a battery cell. The battery pack shell and the battery pack cover define a receiving cavity, and the battery cell is located in the receiving cavity. The battery pack cover in the prior art has insufficient safety performance and cannot better meet the needs of users. Utility Model Content
[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the utility model provides a battery pack and a vehicle.
[0005] In a first aspect, the utility model discloses a battery pack, which may include a battery pack cover, a battery cell and a battery pack shell having a mounting opening, the battery pack cover covers the mounting opening, the battery pack shell and the battery pack cover define a accommodating cavity, and the battery cell is located in the accommodating cavity; the battery pack cover may include a plurality of upper cover substrates, in a first direction, the plurality of upper cover substrates are sequentially connected, the plurality of upper cover substrates include: one or more first substrates, the first substrate includes a first surface facing away from the battery cell, a first reinforcing rib is provided on the first surface, and the first reinforcing rib extends along a second direction; one or more second substrates, the second substrate includes a second surface facing the battery cell, a second reinforcing rib is provided on the second surface, and the second reinforcing rib extends along the first direction.
[0006] The first direction refers to the length direction of the vehicle, and the second direction refers to the width direction of the vehicle.
[0007] In this way, on the one hand, by setting the first reinforcing rib on the first substrate, the strength of the battery pack cover in the width direction of the vehicle is strengthened, and by setting the second reinforcing rib on the second substrate, the strength of the battery pack cover in the length direction of the vehicle is strengthened, thereby improving the overall strength of the battery pack cover. On the other hand, different numbers of first substrates and second substrates can be selected according to the size of battery packs of different vehicles to meet the requirements of battery packs of different sizes or different arrangements of cells for the battery pack cover.
[0008] In some embodiments of the present application, there are multiple first reinforcing ribs, and the multiple first reinforcing ribs are arranged at intervals in the first direction.
[0009] In some embodiments of the present application, the first substrate includes a first edge and a second edge, in the second direction, the first edge is arranged opposite to the second edge, and the first reinforcement rib includes a first end and a second end; wherein the first end extends to the first edge, and / or the second end extends to the second edge.
[0010] In some embodiments of the present application, there are multiple second reinforcing ribs, and the multiple second reinforcing ribs are spaced apart in the second direction.
[0011] In some embodiments of the present application, the second substrate includes a third edge and a fourth edge, and in the first direction, the third edge is arranged opposite to the fourth edge, and the second reinforcement rib includes a third end and a fourth end; wherein the third end extends to the third edge, and / or the fourth end extends to the fourth edge.
[0012] In some embodiments of the present application, the plurality of upper cover substrates include a plurality of first substrates and a plurality of second substrates, and in a first direction, the first substrates and the second substrates are arranged alternately.
[0013] In some embodiments of the present application, the thickness of the upper cover substrate is a first thickness, and the first thickness is greater than or equal to 2 mm and less than or equal to 3 mm.
[0014] In some embodiments of the present application, a seat crossbar is further provided on the first surface, and the seat crossbar extends along the second direction.
[0015] In some embodiments of the present application, the material of the upper cover substrate includes aluminum.
[0016] In a second aspect, the utility model discloses a vehicle, which may include a vehicle body and a battery pack provided by the above embodiment, wherein the battery pack is arranged on the vehicle body.
[0017] Among them, the technical effects brought about by any design scheme in the second aspect can refer to the technical effects brought about by different design methods in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0020] Figure 1 A schematic diagram of a battery pack provided for some embodiments of the present application;
[0021] Figure 2 for Figure 1 A schematic diagram of a battery pack cover as shown in ;
[0022] Figure 3 for Figure 1 A schematic diagram of another angle of the battery pack cover shown in FIG.
[0023] Figure 4 for Figure 1 A schematic diagram of another angle of the battery pack cover shown in FIG.
[0024] Figure 5 Schematic diagrams of battery packs provided in other embodiments of the present application.
[0025] Reference numerals:
[0026] 100. Battery pack;
[0027] 110, battery pack cover; 111, first substrate; 1111, first reinforcing rib; 1112, first edge; 1113, second edge; 112, second substrate; 1121, second reinforcing rib; 1122, third edge; 1123, fourth edge; 113, seat crossbeam;
[0028] 120, battery cell;
[0029] 130. Battery pack casing. DETAILED DESCRIPTION
[0030] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the scheme of the utility model will be further described below. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.
[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.
[0032] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "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 should not be understood as a limitation on the present invention.
[0033] 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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.
[0034] In the description of the embodiments of the present invention, the term "and / or" refers to and covers any and all possible combinations of one or more of the associated listed items. The term "and / or" is a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects before and after are in an "or" relationship.
[0035] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship after the connection remains unchanged. In addition, the directional terms mentioned in the embodiments of the present utility model, such as "inside", "outside", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present utility model, rather than indicating or implying 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 embodiments of the present utility model.
[0036] In the description of the embodiments of the present utility model, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.
[0037] As electric vehicles become increasingly mature, people have higher and higher requirements for new energy vehicle battery packs, including higher requirements for the safety performance of battery packs.
[0038] Among them, the battery pack can generally include a battery pack cover, a battery pack shell and a battery cell. The battery pack shell and the battery pack cover define a accommodating cavity, and the battery cell is located in the accommodating cavity. The battery pack cover in the prior art has insufficient safety performance and cannot better meet the needs of users.
[0039] To solve the above technical problems, please refer to Figures 1 to 4 The present application provides a battery pack 100, wherein the battery pack cover 110 and the battery pack housing 130 of the battery pack 100 can be connected by screws. In order to facilitate the description of the embodiments below, an XY coordinate system is established. The length direction of the battery pack 100 (i.e., the length direction of the vehicle) is defined as the X-axis, and the width direction of the battery pack 100 (i.e., the width direction of the vehicle) is defined as the Y-axis, and the X-axis direction is perpendicular to the Y-axis direction.
[0040] Specifically, the battery pack upper cover 110 may include a plurality of upper cover substrates arranged in a first direction (eg Figure 1 In the X direction shown in ), multiple upper cover substrates are connected in sequence. Specifically, the material of the upper cover substrates can be aluminum. The adjacent upper cover substrates are connected by welding.
[0041] Among them, see Figure 3 The plurality of upper cover substrates may include one or more first substrates 111, the first substrate 111 includes a first surface away from the battery cell 120, a first reinforcing rib 1111 is provided on the first surface, and the first reinforcing rib 1111 is provided along the second direction (eg Figure 3 Thus, by providing the first reinforcing rib 1111, the strength of the first substrate 111 in the vehicle width direction is increased, thereby improving the overall strength of the battery pack upper cover 110, thereby improving the safety performance of the battery pack 100, and when the vehicle is subjected to a side collision, the battery pack 100 can be reduced from collapsing and deforming, the internal battery cell 120 can be protected, and the risks of leakage, fire, explosion, etc. of the battery cell 120 can be reduced.
[0042] See also Figure 4 The multiple upper cover substrates also include one or more second substrates 112. The second substrate 112 includes a second surface facing the battery cell 120. The second surface is provided with a second reinforcing rib 1121. The second reinforcing rib 1121 extends along the length direction of the vehicle. Therefore, by providing the second reinforcing rib 1121, the strength of the second substrate 112 in the length direction of the vehicle is increased, thereby improving the overall strength of the battery pack upper cover 110, thereby improving the safety performance of the battery pack 100. When the entire vehicle is subjected to a longitudinal collision, the battery pack 100 can be reduced from collapsing and deforming, protecting the internal battery cell 120, and reducing the risk of leakage, fire, explosion, etc. of the battery cell 120.
[0043] The number of the first substrate 111 and the second substrate 112 can be determined by the size of the battery pack 100 and the arrangement of the battery cells 120. This is conducive to agile design, shortening the development cycle, and reducing development costs.
[0044] For example, in some embodiments of the present application, the battery pack cover 110 may include a first substrate 111 and a second substrate 112 .
[0045] In some other embodiments of the present application, the battery pack cover 110 may include a first substrate 111 and a plurality of second substrates 112 .
[0046] In some other embodiments of the present application, the battery pack cover 110 may include a plurality of first substrates 111 and one second substrate 112 .
[0047] In some other embodiments of this application, please refer to Figure 3 The battery pack upper cover 110 may include a plurality of first substrates 111 and a plurality of second substrates 112 .
[0048] In the length direction of the vehicle, the first substrate 111 and the second substrate 112 may be arranged alternately.
[0049] In some embodiments of the present application, there may be multiple first reinforcing ribs 1111, and the multiple first reinforcing ribs 1111 are arranged at intervals in the length direction of the vehicle. Thus, by providing multiple first reinforcing ribs 1111, the strength of the first substrate 111 in the width direction of the vehicle can be further strengthened, thereby enhancing the overall strength of the battery pack cover 110.
[0050] The number of the first reinforcing ribs 1111 may be designed according to actual conditions. Specifically, the number of the first reinforcing ribs 1111 may be one, two, three, four, or the like.
[0051] In some embodiments of this application, please refer to Figure 3 The first substrate 111 includes a first edge 1112 and a second edge 1113. In the width direction of the vehicle, the first edge 1112 and the second edge 1113 are arranged opposite to each other, and the first reinforcing rib 1111 includes a first end and a second end.
[0052] The first end may extend to the first edge 1112, and the second end may extend to the second edge 1113. In a specific implementation, the first end extends to the first edge 1112, and the second end extends to the second edge 1113. In this way, the length of the first reinforcing rib 1111 can be extended to the maximum extent, so that the battery pack cover 110 has a complete force transmission path in the width direction of the vehicle, thereby maximizing the structural strength of the battery pack cover 110 in the width direction of the vehicle, thereby improving the overall structural strength of the battery pack 100.
[0053] In some embodiments of this application, please refer to Figure 4 The number of the second reinforcing ribs 1121 can be multiple, and the multiple second reinforcing ribs 1121 are arranged at intervals in the width direction of the vehicle. Therefore, by providing multiple second reinforcing ribs 1121, the strength of the second substrate 112 in the width direction of the vehicle can be further strengthened, thereby enhancing the overall strength of the battery pack cover 110.
[0054] The number of the second reinforcing ribs 1121 may be designed according to actual conditions. Specifically, the number of the second reinforcing ribs 1121 may be one, two, three, four, or the like.
[0055] In some embodiments of this application, please refer to Figure 4 The second substrate 112 includes a third edge 1122 and a fourth edge 1123. In the length direction of the vehicle, the third edge 1122 and the fourth edge 1123 are arranged opposite to each other, and the second reinforcing rib 1121 includes a third end and a fourth end.
[0056] The third end may extend to the third edge 1122, and the fourth end may extend to the fourth edge 1123. In a specific implementation, the third end extends to the third edge 1122 while the fourth end extends to the fourth edge 1123, so that the length of the second reinforcing rib 1121 can be extended to the maximum extent, so that the battery pack cover 110 has a complete force transmission path in the length direction of the vehicle, thereby maximizing the structural strength of the battery pack cover 110 in the length direction of the vehicle, thereby improving the overall structural strength of the battery pack 100.
[0057] In some embodiments of the present application, the thickness of the upper cover substrate is a first thickness, and the first thickness is greater than or equal to 2 mm and less than or equal to 3 mm.
[0058] In a specific implementation process, the thickness of the upper cover substrate can be 2 mm, 2.2 mm, 2.4 mm, 2.6 mm, 2.8 mm, 3 mm, etc. In this way, the height proportion of the battery pack upper cover 110 to the battery pack 100 in the vertical direction can be reduced while ensuring that the battery pack upper cover 110 has sufficient strength in the vertical direction, and at the same time, the material used can be reduced to reduce the overall weight of the battery pack 100.
[0059] Among them, reducing the height ratio of the battery pack cover 110 to the battery pack 100 in the vertical direction can increase the passenger compartment space, or increase the ground clearance of the entire vehicle, or increase the height of the battery cell 120 to improve battery life, etc.
[0060] In some embodiments of this application, please refer to Figure 5 A seat cross beam 113 is also provided on the first surface, and the seat cross beam 113 extends along the width direction of the vehicle.
[0061] It should be noted that when the battery pack 100 is applied to a cell to body (CTB) solution, a seat beam 113 may be provided on the first surface of the first substrate 111, wherein the seat beam 113 may be a front seat beam 113 or a rear seat beam 113, or two seat beams 113 may be provided at the same time, namely the front seat beam 113 and the rear seat beam 113, thereby realizing the function of the seat beam 113 of the vehicle body and improving the integration of the vehicle body and the battery pack 100.
[0062] At the same time, a seat cross beam 113 is provided on the first surface of the first substrate 111 , which can further enhance the strength of the battery pack upper cover 110 in the vehicle width direction.
[0063] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A battery pack, characterized in that: include: A battery pack upper cover, a battery cell and a battery pack shell having an installation opening, wherein the battery pack upper cover covers the installation opening, the battery pack shell and the battery pack upper cover define a receiving cavity, and the battery cell is located in the receiving cavity; The battery pack upper cover comprises a plurality of upper cover substrates. In a first direction, the plurality of upper cover substrates are sequentially connected. The plurality of upper cover substrates comprise: One or more first substrates, the first substrate comprising a first surface facing away from the battery core, a first reinforcing rib being provided on the first surface, and the first reinforcing rib extending along a second direction; One or more second substrates, the second substrate comprising a second surface facing the battery core, the second surface being provided with a second reinforcing rib, and the second reinforcing rib extending along the first direction.
2. The battery pack according to claim 1, characterized in that: There are multiple first reinforcing ribs, and the multiple first reinforcing ribs are arranged at intervals in the first direction.
3. The battery pack according to claim 1, characterized in that: The first substrate includes a first edge and a second edge, the first edge is arranged opposite to the second edge in the second direction, and the first reinforcing rib includes a first end and a second end; Wherein, the first end extends to the first edge, and / or the second end extends to the second edge.
4. The battery pack according to claim 1, characterized in that: There are multiple second reinforcing ribs, and the multiple second reinforcing ribs are arranged at intervals in the second direction.
5. The battery pack according to claim 1, characterized in that: The second substrate includes a third edge and a fourth edge, and in the first direction, the third edge is arranged opposite to the fourth edge, and the second reinforcing rib includes a third end and a fourth end; Wherein, the third end extends to the third edge, and / or the fourth end extends to the fourth edge.
6. The battery pack according to claim 1, characterized in that: The plurality of upper cover substrates include a plurality of first substrates and a plurality of second substrates. In the first direction, the first substrates and the second substrates are arranged alternately.
7. The battery pack according to claim 1, characterized in that: The thickness of the upper cover substrate is a first thickness, and the first thickness is greater than or equal to 2 mm and less than or equal to 3 mm.
8. The battery pack according to claim 1, characterized in that: A seat crossbar is also disposed on the first surface, and the seat crossbar extends along the second direction.
9. The battery pack according to claim 1, characterized in that: The upper cover substrate is an aluminum upper cover substrate.
10. A vehicle, characterized in that: include: Car body; The battery pack according to any one of claims 1 to 9, wherein the battery pack is disposed on the vehicle body.