Battery pack and vehicle

Abstract

This utility model discloses a battery pack and a vehicle. The battery pack includes: a housing with a receiving cavity; a beam structure disposed within the receiving cavity, dividing the receiving cavity into at least two receiving positions along a first direction; the beam structure extends along a second direction and is fixedly connected to the housing; the beam structure includes multiple sub-beams connected along the second direction; the side of the sub-beam facing the receiving position is a first sub-beam wall, and the included angle between two adjacent first sub-beam walls is θ1, 0° < θ1 < 180°; a limiting space is formed between two adjacent first sub-beam walls in the beam structure; and a battery module disposed within the receiving position, at least partially located within the limiting space, and engaging with the sub-beams in a limiting fit along the second direction; wherein the first direction is perpendicular to the second direction. This application improves the safety and stability of the battery pack while fully utilizing the internal space of the battery pack.

Description

Technical Field

[0001] This utility model relates to the field of power battery technology, and in particular to a battery pack and vehicle. Background Technology

[0002] With increasing environmental pollution, the new energy industry is attracting more and more attention. Battery technology is a crucial factor in the development of the new energy industry. In the current trend of battery technology development, module-less battery packs are becoming the mainstream design. How to improve the safety and stability of the battery pack while maximizing the utilization of internal space is a pressing technical problem that needs to be solved in battery technology. Utility Model Content

[0003] The purpose of this invention is to provide a battery pack that improves the safety and stability of the battery pack while making full use of its internal space.

[0004] Another objective of this invention is to provide a vehicle employing the aforementioned battery pack.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A battery pack, comprising:

[0007] The housing has a receiving cavity;

[0008] A beam structure is disposed within the accommodating cavity and divides the accommodating cavity into at least two accommodating positions along a first direction. The length direction of the beam structure extends along a second direction and is fixedly connected to the box body. The beam structure includes multiple sub-beams connected along the second direction. The side of each sub-beam facing the accommodating position is a first sub-beam wall, and the included angle between two adjacent first sub-beam walls is θ1, where 0° < θ1 < 180°. A finite space is formed between two adjacent first sub-beam walls in the beam structure.

[0009] A battery module is disposed in the receiving position, and the battery module is at least partially located within the limiting space and is engaged with the sub-beam in the upper limit of the second direction;

[0010] Wherein, the first direction is perpendicular to the second direction.

[0011] Preferably, the side of the sub-beam facing away from the receiving position is parallel to the second direction.

[0012] Preferably, the battery module includes a plurality of battery packs arranged along a first direction, with at least a portion of the battery packs at the ends along the first direction located within the limiting space and engaging with the sub-beams of the beam structure in a second direction.

[0013] Preferably, the battery pack further includes a thermal management component, which is disposed between two adjacent battery packs and / or between the battery packs and the beam structure. The thermal management component includes a plurality of sub-components connected along a second direction, and the included angle between two adjacent sub-components is θ2, wherein θ1 and θ2 satisfy: θ2=θ1.

[0014] Preferably, along the second direction, the length of the thermal management component is greater than the length of the beam structure.

[0015] Preferably, at least one side of the sub-beam in the first direction is provided with a clearance groove to allow the gripper to avoid the battery module when the gripper clamps the battery module into the receiving position.

[0016] Preferably, the sub-beam is provided with reinforcing ribs between the two sidewalls along the first direction and / or the two sidewalls along the second direction.

[0017] Preferably, at least one end of the beam structure in the second direction is provided with a mounting boss, the projected area of ​​the mounting boss in the second direction is greater than the projected area of ​​the end of the beam structure in the second direction that is connected to the mounting boss in the second direction, and the mounting boss is fixedly connected to the box body.

[0018] Preferably, the bottom of the sub-beam is provided with a locking hole, and a fastener is inserted into the locking hole to fix the box body and the sub-beam together.

[0019] Preferably, at least one of the sub-beams is provided with a mounting hole, and a connecting component is inserted into the mounting hole. The connecting component is used to connect the battery pack to the electrical equipment.

[0020] Preferably, an insulating and heat-insulating layer is provided between the beam structure and the battery module.

[0021] This utility model also relates to a vehicle, including the aforementioned battery pack.

[0022] Compared with the prior art, the battery pack of this utility model has the following advantages:

[0023] In this invention, by placing the beam structure within the receiving cavity of the housing and dividing the receiving cavity into at least two receiving positions, the receiving positions can be formed between beam structures or between the beam structure and the side wall of the housing. The beam structure includes multiple sub-beams connected along a second direction. The side of each sub-beam facing the receiving position is a first sub-beam wall, and the included angle between two adjacent first sub-beam walls is θ1, where 0° < θ1 < 180°. A limiting space is formed between two adjacent first sub-beam walls in the beam structure. The battery module is placed in the receiving position, and at least partially located within the limiting space, allowing the battery module and the sub-beam to engage in a limiting fit in the second direction. This ensures the reliability of the connection between the beam structure and the battery module. In other words, the beam structure design balances the utilization of the internal space of the battery pack with the improved safety and stability of the battery pack housing. Attached Figure Description

[0024] Figure 1 This is a perspective view of the overall structure of an embodiment of the present utility model;

[0025] Figure 2 This is a top view of the overall structure of an embodiment of this utility model;

[0026] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0027] Figure 4 yes Figure 2 Enlarged view at point B in the middle;

[0028] Figure 5 yes Figure 2 Enlarged view at point C;

[0029] Figure 6 This is a perspective view of the beam structure according to an embodiment of the present utility model;

[0030] Figure 7 This is a perspective view of the beam structure from another angle according to an embodiment of this utility model.

[0031] In the diagram, X represents the first direction; Y represents the second direction.

[0032] 1. Housing; 11. Receiving cavity; 12. Receiving position; 2. Beam structure; 21. Sub-beam; 211. First sub-beam wall; 22. Circumvention groove; 23. Reinforcing rib; 24. Mounting boss; 25. Locking hole; 26. Mounting hole; 27. Limiting space; 28. Connecting assembly; 3. Battery module; 31. Battery pack; 311. Battery cell; 32. Thermal management component; 321. Sub-component; Detailed Implementation

[0033] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0034] In the description of this utility model, it should be understood that the term "comprising" as used in this specification means the presence of the stated features, integers, steps, operations, parts, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, parts, components, and / or groups thereof. It should be understood that when we say a part is "connected" to another part, it can be directly connected to the other part, or there may be intermediate parts. The term "and / or" as used herein includes all or any unit and all combinations of one or more associated listed items.

[0035] like Figures 1 to 7 As shown, this utility model relates to a battery pack, comprising:

[0036] Box 1, Box 1 is provided with a receiving cavity 11;

[0037] Beam structure 2 is disposed within the accommodating cavity 11 and divides the accommodating cavity 11 into at least two accommodating positions 12 along the first direction X. The length direction of beam structure 2 extends along the second direction Y and is fixedly connected to the box body 1. Beam structure 2 includes a plurality of sub-beams 21 connected along the second direction Y. The side of sub-beam 21 facing the accommodating position 12 is a first sub-beam wall 211, and the included angle between two adjacent first sub-beam walls 211 is θ1, 0°<θ1<180°. A limited space 27 is formed between two adjacent first sub-beam walls 211 in beam structure 2.

[0038] Battery module 3 is located in the accommodating position 12. Battery module 3 is at least partially located within the limiting space 27 and is engaged with sub-beam 21 in the upper limit of the second direction Y.

[0039] In this context, the first direction X is perpendicular to the second direction Y.

[0040] In this invention, the beam structure 2 is disposed within the receiving cavity 11 of the box body 1, and the receiving cavity 11 is divided into at least two receiving positions 12. The receiving positions 12 can be formed between beam structures 2 or between beam structures 2 and the side wall of the box body 1. The beam structure 2 includes multiple sub-beams 21 connected along the second direction Y. The side of the sub-beam 21 facing the receiving position 12 is a first sub-beam wall 211, and the included angle between two adjacent first sub-beam walls 211 is θ1, where 0° < θ1. <180°, a limiting space 27 is formed between two adjacent first sub-beam walls 211 in the beam structure 2. The battery module 3 is located in the receiving position 12, and the battery module 3 is at least partially located within the limiting space 27, so that the battery module 3 and the sub-beam 21 can be matched in the upper limit in the second direction Y, thereby ensuring the reliability of the connection between the beam structure 2 and the battery module 3. That is, the setting of the beam structure 2 takes into account the utilization rate of the internal space of the battery pack and also improves the safety and stability of the battery pack box 1.

[0041] Preferably, the side of the sub-beam 21 facing away from the receiving position 12 is parallel to the second direction Y. That is, the side of the beam structure 2 facing away from the battery module 3 does not need to limit the battery module 3, so the side of the beam structure 2 facing away from the battery module 3 can be set as a plane to give the beam structure 2 sufficient support strength.

[0042] Specifically, when multiple beam structures 2 are provided along the first direction X, the two outermost beam structures 2 are on opposite sides of each other in the first direction X, and both sides are planes parallel to the second direction Y. The two outermost beam structures 2 form a finite space 27 on opposite sides in the first direction X. The multiple beam structures 2 in the middle region form a finite space 27 on both sides of the first direction X.

[0043] Preferably, the battery module 3 includes a plurality of battery packs 31 arranged along the first direction X. The battery packs 31 at the ends along the first direction X are at least partially located within the limiting space 27 and are engaged with the sub-beams 21 of the beam structure 2 in the second direction Y. Thus, the beam structure 2, by limiting the battery packs 31 at the ends along the first direction X, ensures that the battery module 3 located in the accommodating position 12 can be stably placed within the housing 1, thereby ensuring the safety and stability of the battery pack.

[0044] In this embodiment, the battery pack further includes a thermal management component 32, which is disposed between two adjacent battery packs 31 and / or between the battery pack 31 and the beam structure 2. The thermal management component 32 includes a plurality of sub-components 321 connected along the second direction Y, and the included angle between two adjacent sub-components 321 is θ2, wherein θ1 and θ2 satisfy: θ2=θ1.

[0045] Let θ1 and θ2 satisfy: θ2=θ1, that is, the thermal management component 32 and the beam structure 2 are also bent to cooperate in limiting the multiple battery packs 31 in the second direction Y, so that the arrangement between the beam structure 2, the battery pack 31 and the thermal management component 32 is more compact and adapted, reducing space waste, improving the volume utilization of the battery pack, further improving the safety and stability of the battery pack, and also realizing the thermal management of the battery pack 31.

[0046] It should be noted that due to production and assembly errors in actual battery pack products, there will also be adaptation tolerances between the thermal management component 32 and the beam structure 2. Therefore, θ1 and θ2 are not necessarily completely equal in theory, but they will definitely be close to being equal.

[0047] In this embodiment, along the second direction Y, the length of the thermal management component 32 is greater than the length of the beam structure 2, thereby ensuring the reliability of the connection between the beam structure 2, the battery module 3 and the thermal management component 32, and making the battery pack more stable.

[0048] In this embodiment, the battery pack 31 includes a plurality of battery cells 311 connected along the second direction Y. Two adjacent battery cells 311 are arranged at an angle in the second direction Y, thereby limiting and cooperating with the beam structure 2 and the thermal management component 32. The battery cell 311 includes a first sidewall, a second sidewall, a third sidewall, a fourth sidewall, a top wall and a bottom wall. The first sidewall, the second sidewall, the third sidewall and the fourth sidewall are connected in sequence and form a parallelogram structure. The top wall and the bottom wall are respectively located at the top and bottom of the parallelogram structure.

[0049] By forming a parallelogram structure with the first, second, third, and fourth sidewalls, when two adjacent battery cells 311 are arranged at an angle, the two sides of the adjacent battery cells 311 that are close to each other in the second direction Y can be brought closer together, thereby reducing the gap between the two adjacent battery cells 311 and enhancing the safety and stability of the battery pack.

[0050] In this embodiment, at least one side of the sub-beam 21 in the first direction X is provided with a clearance groove 22 to allow the gripper to avoid the battery module 3 when it enters the receiving position 12, thereby facilitating the installation of the battery module 3 in the receiving position 12.

[0051] In this embodiment, reinforcing ribs 23 are provided between the two side walls of the sub-beam 21 along the first direction X and / or the two side walls along the second direction Y.

[0052] By setting reinforcing ribs 23 inside the sub-beam 21, a support is formed inside the sub-beam 21, which can improve the structural strength of the beam structure 2. At the same time, while ensuring that the beam structure 2 has sufficient support strength, the interior of the beam structure 2 can be hollowed out, thereby reducing the mass of the beam structure 2 and achieving the lightweighting of the battery pack.

[0053] In this embodiment, at least one end of the beam structure 2 in the second direction Y is provided with a mounting boss 24. The projected area of ​​the mounting boss 24 in the second direction Y is greater than the projected area of ​​the end of the beam structure 2 in the second direction Y that is connected to the mounting boss 24 in the second direction Y. The mounting boss 24 is fixedly connected to the box body 1.

[0054] The beam structure 2 is fixedly connected to the inner wall of the box body 1 by mounting boss 24. The projected area of ​​the mounting boss 24 in the second direction Y is greater than the projected area of ​​the end of the beam structure 2 connected to the mounting boss 24 in the second direction Y, thereby increasing the contact area with the inner wall of the box body 1 and strengthening the stability of the connection with the box body 1. The mounting boss 24 can be fixed to the inner wall of the box body 1 by means of adhesive, locking or other methods.

[0055] In this embodiment, a locking hole 25 is provided at the bottom of the sub-beam 21, and a fixing member is inserted into the locking hole 25 to fix the housing 1 and the sub-beam 21 together, thereby improving the mode of the battery pack.

[0056] In this embodiment, at least one sub-beam 21 is provided with a mounting hole 26, and a connecting component 28 is inserted into the mounting hole 26. The connecting component 28 is used to connect the battery pack and the electrical equipment.

[0057] The connecting component 28 is a sleeve. By installing the sleeve into the mounting hole 26, the sleeve is fixedly connected to the external electrical equipment, thereby realizing the fixed connection between the battery pack and the electrical equipment.

[0058] In this embodiment, an insulating and heat-insulating layer is provided between the beam structure 2 and the battery module 3.

[0059] Specifically, an insulating and heat-insulating layer is provided between the beam structure 2, the battery pack 31, and the thermal management component 32. The insulating and heat-insulating layer has insulating and heat-insulating properties and can protect the beam structure 2, the battery pack 31, and the thermal management component 32.

[0060] In other embodiments, the beam structure 2, the thermal management component 32, and the battery pack 31 are in direct contact. In this case, the surface of the beam structure 2 is provided with an insulating layer to provide insulation protection between the beam structure 2 and the housing 1.

[0061] This utility model also relates to a vehicle, including a battery pack.

[0062] Because the battery pack of this application forms a stable structure within the battery pack housing 1 through the limiting cooperation of the beam structure 2, the thermal management component 32, and the battery module 3, the safety and stability of the battery pack are improved. At the same time, the energy density within the battery pack is guaranteed. Therefore, the safety of the vehicle during use is ensured, and the vehicle's range is guaranteed.

[0063] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A battery pack, characterized in that, include: Box (1), wherein the box (1) is provided with a receiving cavity (11); A beam structure (2) is provided in the accommodating cavity (11) and divides the accommodating cavity (11) into at least two accommodating positions (12) along the first direction (X). The length direction of the beam structure (2) extends along the second direction (Y) and is fixedly connected to the box body (1). The beam structure (2) includes a plurality of sub-beams (21) connected along the second direction (Y). The side of the sub-beam (21) facing the accommodating position (12) is a first sub-beam wall (211), and the included angle between two adjacent first sub-beam walls (211) is θ1, 0°<θ1<180°. A finite space (27) is formed between two adjacent first sub-beam walls (211) in the beam structure (2). Battery module (3), the battery module (3) is disposed in the accommodating position (12), the battery module (3) is at least partially located in the limiting space (27), and is in upper limit cooperation with the sub-beam (21) in the second direction (Y); Wherein, the first direction (X) is perpendicular to the second direction (Y).

2. The battery pack according to claim 1, characterized in that, The side of the sub-beam (21) facing away from the accommodating position (12) is parallel to the second direction (Y).

3. The battery pack according to claim 1, characterized in that, The battery module (3) includes a plurality of battery packs (31) arranged along a first direction (X), and the battery packs (31) at the ends along the first direction (X) are at least partially located within the limiting space (27) and are in upper limit engagement with the sub-beams (21) of the beam structure (2) in a second direction (Y).

4. The battery pack according to claim 3, characterized in that, The battery pack also includes a thermal management component (32), which is disposed between two adjacent battery packs (31) and / or between the battery pack (31) and the beam structure (2). The thermal management component (32) includes a plurality of sub-components (321) connected along a second direction (Y), and the included angle between two adjacent sub-components (321) is θ2, wherein θ1 and θ2 satisfy: θ2=θ1.

5. The battery pack according to claim 4, characterized in that, Along the second direction (Y), the length of the thermal management component (32) is greater than the length of the beam structure (2).

6. The battery pack according to claim 1, characterized in that, The sub-beam (21) has a clearance groove (22) on at least one side in the first direction (X) to allow the gripper to avoid the battery module (3) when it enters the receiving position (12).

7. The battery pack according to claim 1, characterized in that, The sub-beam (21) is provided with reinforcing ribs (23) between the two side walls along the first direction (X) and / or the two side walls along the second direction (Y).

8. The battery pack according to claim 1, characterized in that, The beam structure (2) has a mounting boss (24) at at least one end in the second direction (Y). The projected area of ​​the mounting boss (24) in the second direction (Y) is greater than the projected area of ​​the end of the beam structure (2) in the second direction (Y) that is connected to the mounting boss (24). The mounting boss (24) is fixedly connected to the box body (1).

9. The battery pack according to claim 1, characterized in that, The bottom of the sub-beam (21) is provided with a locking hole (25), and a fastener is inserted into the locking hole (25) to fix the box (1) and the sub-beam (21) together.

10. The battery pack according to claim 1, characterized in that, At least one of the sub-beams (21) is provided with a mounting hole (26), and a connecting component (28) is inserted into the mounting hole (26). The connecting component (28) is used to connect the battery pack to the electrical equipment.

11. The battery pack according to claim 1, characterized in that, An insulating and heat-insulating layer is provided between the beam structure (2) and the battery module (3).

12. A vehicle, characterized in that, Includes the battery pack as described in any one of claims 1-11.

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