Battery packs and electrical devices

Abstract

This application relates to the technical field of battery packs, and specifically proposes a battery pack and an electrical device. The battery pack includes a frame, a battery pack, and a conductive busbar. The frame has a first element and a second element at its two ends along a first direction, and beams distributed along the first direction are located inside the frame. The battery pack is located inside the frame and distributed on both sides of the beams along a second direction. The conductive busbar is electrically connected to the first and second elements and is at least partially connected to one side of the beams along a third direction. The first, second, and third directions intersect each other. In this application, the beams increase the strength of the frame and provide mounting points for the conductive busbar, allowing it to be distributed inside the frame. This prevents damage to the conductive busbar and short circuits during side collisions, and also prevents the conductive busbar from shaking, contributing to the stability of the overall structure. Furthermore, the conductive busbar is located on one side of the beams along a third direction, making full use of the internal space and achieving high space utilization.

Description

Technical Field

[0001] This application relates to the technical field of battery packs, and specifically proposes a battery pack and an electrical device. Background Technology

[0002] In practical applications, some electric vehicles are rear-wheel drive models, so their power battery system's charging and discharging interfaces tend to be located at the rear of the battery pack, while components such as relays are generally located at the front compartment of the battery pack. This requires the design of copper busbars to extend from the front compartment to the rear of the battery pack to electrically connect the charging and discharging interfaces with other components.

[0003] However, the introduction of copper busbars will take up too much space in the battery pack and reduce the volumetric energy density. In addition, if the busbars are arranged on both sides of the battery pack, the insulation layer of the copper busbars is easily damaged by the impact when the vehicle is involved in a side collision, which will increase the risk of internal short circuits. Utility Model Content

[0004] The purpose of this application is to solve at least some of the technical problems mentioned above, and this purpose is achieved through the following technical solutions:

[0005] In a first aspect, this application proposes a battery pack, which includes a frame, a battery pack, and a conductive busbar; the frame is provided with a first element and a second element at its two ends along a first direction, and a beam distributed along the first direction is provided inside the frame; the battery pack is disposed inside the frame and distributed on both sides of the beam along a second direction; the conductive busbar is electrically connected to the first element and the second element and is at least partially connected to one side of the beam along a third direction; wherein the first direction, the second direction, and the third direction intersect each other.

[0006] Secondly, this application proposes an electrical device that includes the battery pack of the first aspect.

[0007] The technical solution proposed in this application has at least the following technical effects:

[0008] In the above scheme, the beam can increase the strength of the frame and provide installation points for the conductive busbars, so that the conductive busbars can be distributed inside the frame, avoiding damage to the conductive busbars and short circuits when the vehicle is involved in a side collision. It can also prevent the conductive busbars from shaking, which is conducive to the stability of the overall structure. In addition, the conductive busbars are located on one side of the beam along the third direction, making full use of the internal space and achieving high space utilization. Attached Figure Description

[0009] To better integrate the content illustrated in the accompanying drawings with the description of the specific embodiments, a brief introduction to the drawings is provided below. It is understood that the accompanying drawings mentioned below are merely schematic illustrations of some embodiments of the relevant technical solutions and the technical solutions of this application. Without creative effort, those skilled in the art can create drawings illustrating other embodiments.

[0010] Specifically, the annotations for the accompanying drawings are as follows:

[0011] Figure 1 This is a schematic diagram of the structure of the battery pack described in some embodiments of this application;

[0012] Figure 2 This is a schematic diagram of the structure of the frame described in some embodiments of this application;

[0013] Figure 3 This is a first partially enlarged schematic diagram of the beam described in some embodiments of this application;

[0014] Figure 4 This is a second partially enlarged schematic diagram of the beam described in some embodiments of this application;

[0015] Figure 5 This is a schematic diagram of the structure of the first component described in some embodiments of this application;

[0016] Figure 6 This is a schematic diagram of the structure of the second component described in some embodiments of this application.

[0017] Specifically, the annotations for the figure marks in the instruction manual are as follows:

[0018] 10. Frame; 101. Beam; 1011. Slot; 20. Battery pack; 30. Conductive busbar; 301. First side; 302. Second side; 303. First conductive busbar; 304. Second conductive busbar; 40. Fixing assembly; 401. Limiting hole; 402. First component; 4021. Tongue; 4022. First protrusion; 4023. Second protrusion; 403. Second component; 4031. Slot; 4032. Divider; 4033. Positioning notch; X, First direction; Y, Second direction; Z, Third direction. Detailed Implementation

[0019] To make the embodiments of this application clearer, they will be described below in conjunction with the accompanying drawings. It should be understood that the content mentioned below represents only some embodiments of this application, and not all embodiments are listed exhaustively. Therefore, other embodiments that can be obtained based on the following embodiments without any inventive effort fall within the protection scope of this application.

[0020] It should be understood that the terminology used herein is for the purpose of describing specific embodiments only and is not intended to impose strict limitations on the technical solutions unless the context clearly indicates otherwise. For example, the use of "a," "an," and "the" to modify a feature does not preclude the possibility that the feature may be plural in other embodiments.

[0021] It should be understood that the terms "comprising," "including," and "having" are open-ended, indicating the presence of the stated features but not excluding the possibility of other features in the embodiment. Similarly, the use of terms such as "first," "second," etc., to describe multiple features only indicates the distinction between one feature and another, and such terms do not imply order or sequence unless explicitly stated in the context.

[0022] It should be understood that, unless the context clearly indicates otherwise, the terms "setup," "connection," and "installation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integrated connection; they can refer to a direct connection or an indirect connection via a medium. Those skilled in the art will understand the specific meaning of these terms in this document based on the specific circumstances.

[0023] In addition, for ease of description, the text will use terms of spatial relative relationship to describe the position of one feature relative to another feature, such as "inner", "outer", "end", "side", "upper", "middle", "lower", "high", "low", "axial", "circumferential", "radial", "horizontal", "vertical", "first direction", "second direction", etc. It can be understood that the spatial relative relationship between two features should include other specific situations besides those shown in the accompanying drawings of the specification.

[0024] The embodiments of this application are described below with reference to the accompanying drawings. It can be understood that the technical features involved in the different embodiments described below can be combined with each other as long as they do not conflict with each other.

[0025] Firstly, referring to Figure 1 and Figure 2 The embodiments of this application propose a battery pack, which includes a frame 10, a battery pack 20, and a conductive busbar 30; the frame 10 has a first element and a second element respectively provided at both ends along a first direction X, and a beam 101 distributed along the first direction X is provided inside the frame 10; the battery pack 20 is located inside the frame 10 and distributed on both sides of the beam 101 along a second direction Y; the conductive busbar 30 is electrically connected to the first element and the second element and is at least partially connected to one side of the beam 101 along a third direction Z; wherein the first direction X, the second direction Y, and the third direction Z intersect each other.

[0026] In this embodiment, the beam 101 can increase the strength of the frame 10 and provide installation points for the conductive busbar 30, so that the conductive busbar 30 can be distributed inside the frame 10, avoiding damage to the conductive busbar 30 and causing short circuits when the vehicle is involved in a side collision, and also preventing the conductive busbar 30 from shaking, which is beneficial to the stability of the overall structure; in addition, the conductive busbar 30 is located on the side of the beam 101 along the third direction Z, making full use of the internal space and achieving high space utilization.

[0027] Preferably, the first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0028] It should be noted that the first and second components are not shown in the figure; optionally, the first component is a charging / discharging interface and the second component is a relay.

[0029] In some embodiments, refer to Figure 3 The conductive busbar 30 has an adjacent first surface 301 and a second surface 302. The area of ​​the first surface 301 is smaller than the area of ​​the second surface 302. The first surface 301 faces the beam 101.

[0030] In this embodiment, the smaller first side 301 of the conductive busbar 30 faces the beam 101, and the larger second side 302 faces the battery pack 20, that is, the conductive busbar 30 is placed vertically. Compared with placing the conductive busbar 30 flat, placing the conductive busbar 30 vertically can make full use of the space above the beam 101, that is, make full use of the space in the third direction Z, and reduce the space occupation in the second direction Y, avoid interference with the battery pack 20, and enable the first conductive busbar 303 and the second conductive busbar 304 to be placed side by side, which is beneficial for wiring.

[0031] In some embodiments, refer to Figure 3 The conductive busbar 30 includes a first conductive busbar 303 and a second conductive busbar 304, which are arranged side by side along the second direction Y; along the second direction Y, the total thickness of the first conductive busbar 303 and the second conductive busbar 304 is less than or equal to the thickness of the beam 101.

[0032] In some embodiments, along the second direction Y, the total thickness of the first conductive busbar 303 and the second conductive busbar 304 is 13mm-17mm; the thickness of the beam 101 is 18mm-26mm. It is understood that in other embodiments, along the second direction Y, the total thickness of the first conductive busbar 303 and the second conductive busbar 304 can also be any one of 14mm, 14.5mm, 15mm, or 16mm; the thickness of the beam 101 can also be any one of 19mm, 20mm, 22mm, or 25mm.

[0033] Optionally, the first conductive bus 303 electrically connects the positive terminals of the first and second elements, and the second conductive bus 304 electrically connects the negative terminals of the first and second elements.

[0034] In this embodiment, the total thickness of the first conductive busbar 303 and the second conductive busbar 304 does not exceed the thickness of the beam 101, thus avoiding interference with the battery pack 20 and preventing the battery pack 20 from being squeezed. The design is reasonable.

[0035] In some embodiments, refer to Figure 1 and Figure 2 Along the third direction Z, the total height of the conductive busbar 30 and the beam 101 is less than or equal to the height of the battery pack 20.

[0036] In this embodiment, the conductive busbar 30 is connected above the beam 101, and the sum of their heights does not exceed the height of the battery pack 20, so it will not affect the original size of the battery pack, which is a reasonable design.

[0037] In some embodiments, refer to Figure 3 and Figure 4 The battery pack also includes a fixing component 40, which has a limiting hole 401. There are multiple fixing components 40, which are spaced apart along the first direction X on the beam 101. The conductive busbar 30 passes through the limiting holes 401 of the multiple fixing components 40 in sequence.

[0038] In this embodiment, multiple fixing components 40 are spaced apart on the beam 101 and limit the conductive busbar 30 to prevent it from shaking and increase structural stability. It can be understood that there are other connection methods between the conductive busbar 30 and the beam 101, such as directly bonding the conductive busbar 30 to the beam 101 with an adhesive layer.

[0039] In some embodiments, refer to Figures 4 to 6 The fixing component 40 includes a first component 402 and a second component 403. The first component 402 is connected to the beam 101, and the second component 403 is fastened to the first component 402 to form a limiting hole 401.

[0040] In this embodiment, the fixing component 40 includes a first component 402 and a second component 403 that are separately configured. The two components together form a limiting hole 401, which makes it convenient to separate the two components, insert the conductive busbar 30 into the two components, and then fasten them together, making installation convenient. It can be understood that the fixing component 40 can also be configured as a single piece, and the conductive busbar 30 can directly pass through the limiting hole 401, which is also a desirable implementation method.

[0041] In some embodiments, refer to Figure 4 and Figure 5One of the beam 101 and the first component 402 is provided with a slot 1011, and the other is provided with a tongue 4021, which engages with the slot 1011.

[0042] In this embodiment, a specific connection method is proposed between the first component 402 and the beam 101. The two are engaged with the slot 1011 by a snap-fit ​​mechanism, which is convenient for disassembly and reliable for connection.

[0043] In some embodiments, refer to Figures 4 to 6 One of the first component 402 and the second component 403 is provided with a locking hole 4031, and the other is provided with a first protrusion 4022, the first protrusion 4022 being engaged with the locking hole 4031; and / or, one of the first component 402 and the second component 403 is provided with a positioning notch 4033, and the other is provided with a second protrusion 4023, the second protrusion 4023 being engaged with the positioning notch 4033.

[0044] In this embodiment, a specific implementation is proposed to connect the first component 402 and the second component 403. The two are engaged by the first protrusion 4022 and the locking hole 4031, and positioned by the second protrusion 4023 and the positioning notch 4033. The disassembly is convenient and the structure is reliable.

[0045] Specifically, the conductive busbar 30 can be placed on the first component 402, and then the first component 402 and the second component 403 can be fastened together to limit the conductive busbar 30. Then, the latch 4021 on the first component 402 can be used to fasten the whole to the slot 1011 of the beam 101. Alternatively, the first component 402 can be fastened to the beam 101 first, and then the conductive busbar 30 can be placed before fastening the second component 403 to the first component 402.

[0046] In some embodiments, refer to Figure 3 , Figure 5 and Figure 6 The first component 402 and / or the second component 403 are provided with a partition 4032. The conductive bus 30 includes a first conductive bus 303 and a second conductive bus 304, and the partition 4032 is disposed between the first conductive bus 303 and the second conductive bus 304.

[0047] In this embodiment, the partition 4032 limits the first conductive busbar 303 and the second conductive busbar 304 to prevent shaking. In addition, the partition 4032 can also provide insulation protection for the two to prevent short circuits from occurring when the insulation layer of the first conductive busbar 303 and / or the second conductive busbar 304 is damaged.

[0048] Secondly, this application proposes an electrical device that includes the battery pack of the first aspect. Therefore, the electrical device of the second aspect possesses all the technical effects of the battery pack of the first aspect, and its specific technical effects will not be elaborated further.

[0049] Optionally, the electric device can be a hybrid vehicle, a new energy vehicle, or a flying car.

[0050] It should be noted that the battery pack in this embodiment may also include other components, such as an exhaust system, a battery protection board, etc. Other components will not be described in detail here.

[0051] In particular, the term "and / or" in this application should be understood as follows:

[0052] In the first case, the term “and / or” between the first subject and the second subject includes any of the following meanings: (1) only the first subject; (2) only the second subject; and (3) both the first subject and the second subject.

[0053] In the second case, the term "and / or" between the last two of three or more subjects means including at least any one of the subjects. For example, "first subject, second subject and / or third subject" has the same meaning as "first subject and / or second subject and / or third subject", specifically including the following combinations: (1) only the first subject; (2) only the second subject; (3) only the third subject; (4) first subject and second subject and no third subject; (5) first subject and third subject and no second subject; (6) second subject and third subject and no first subject; and (7) first subject, second subject and third subject;

[0054] Furthermore, the character " / " in this application indicates that the objects before and after it are in an "or" relationship.

[0055] Finally, although the embodiments of this application have been described above in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the concept of this application, and such modifications and variations all fall within the scope of protection of this application.

Claims

1. A battery pack, characterized by, include: The frame (10) has a first element and a second element at its two ends along the first direction (X), and has beams (101) distributed along the first direction (X) inside it; The battery pack (20) is located inside the frame (10) and distributed on both sides of the beam (101) along the second direction (Y); A conductive bus (30) electrically connects the first element and the second element and is at least partially connected to one side of the beam (101) along the third direction (Z). The first direction (X), the second direction (Y), and the third direction (Z) intersect each other.

2. The battery pack according to claim 1, characterized in that, The conductive bus (30) has an adjacent first surface (301) and a second surface (302), the area of ​​the first surface (301) is smaller than the area of ​​the second surface (302), and the first surface (301) faces the beam (101).

3. The battery pack according to claim 2, characterized in that, The conductive bus (30) includes a first conductive bus (303) and a second conductive bus (304), wherein the first conductive bus (303) and the second conductive bus (304) are arranged side by side along the second direction (Y); Along the second direction (Y), the total thickness of the first conductive bus (303) and the second conductive bus (304) is less than or equal to the thickness of the beam (101).

4. The battery pack according to claim 3, characterized in that, Along the second direction (Y), the total thickness of the first conductive bus (303) and the second conductive bus (304) is 13mm-17mm; and / or, the thickness of the beam (101) is 18mm-26mm.

5. The battery pack according to claim 2, characterized in that, Along the third direction (Z), the total height of the conductive bus (30) and the beam (101) is less than or equal to the height of the battery pack (20).

6. The battery pack according to claim 1, characterized in that, The battery pack also includes a fixing component (40), which is provided with a limiting hole (401); The fixing component (40) has multiple components, and the multiple fixing components (40) are spaced apart along the first direction (X) on the beam (101). The conductive busbar (30) passes through the limiting holes (401) of the multiple fixing components (40) in sequence.

7. The battery pack according to claim 6, characterized in that, The fixing component (40) includes a first component (402) and a second component (403). The first component (402) is connected to the beam (101), and the second component (403) is fastened to the first component (402) to form the limiting hole (401).

8. The battery pack according to claim 7, characterized in that, One of the beam (101) and the first component (402) is provided with a slot (1011), and the other is provided with a tongue (4021), which engages with the slot (1011).

9. The battery pack according to claim 7, characterized in that, One of the first component (402) and the second component (403) is provided with a locking hole (4031), and the other is provided with a first protrusion (4022), which engages with the locking hole (4031); And / or, one of the first component (402) and the second component (403) is provided with a positioning notch (4033), and the other is provided with a second protrusion (4023), the second protrusion (4023) engaging with the positioning notch (4033).

10. The battery pack according to claim 7, characterized in that, The first component (402) and / or the second component (403) are provided with a partition (4032), and the conductive bus (30) includes a first conductive bus (303) and a second conductive bus (304), and the partition (4032) is disposed between the first conductive bus (303) and the second conductive bus (304).

11. An electrical appliance, characterized in that, Includes the battery pack as described in any one of claims 1 to 10.

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