Support for battery pack, battery pack and electric device

Abstract

The present disclosure relates to a support for a battery pack, a battery pack and an electrical device, the support being arranged between two battery groups and comprising a frame body provided with mounting portions for mounting of poles; and a support portion connected to the frame body and protruding from the frame body for supporting a connecting row between the two battery groups. Through the above technical solution, the support provided by the present disclosure can improve the reliability of the conductive connection between each battery group in the battery pack.

Description

Technical Field

[0001] This disclosure relates to the field of battery pack technology, and more specifically, to a bracket for a battery pack, a battery pack, and an electrical device. Background Technology

[0002] In related technologies, two battery packs are electrically connected by welding their respective connecting copper busbars together. Due to tolerances in the manufacturing process, dimensional deviations in the battery packs after assembly can cause tensile stress in the welded areas of the two connecting copper busbars, affecting the reliability of the conductive connection between the two battery packs. Utility Model Content

[0003] The purpose of this disclosure is to provide a bracket for a battery pack, a battery pack, and an electrical device, wherein the bracket can improve the reliability of the conductive connection between the individual battery packs within the battery pack.

[0004] To achieve the above objectives, this disclosure provides a bracket for a battery pack, the bracket being disposed between two battery packs, and comprising: a frame having a mounting portion for mounting terminals; and a support portion connected to and protruding from the frame to support a connecting strip between the two battery packs.

[0005] Optionally, the support portion is integrally formed with the frame.

[0006] Optionally, a socket is provided on one side of the support portion, so that the connecting strip can be inserted into the socket and overlapped with the support portion.

[0007] Optionally, the bracket includes two limiting parts, which are spaced apart on the frame. The support part is arranged between the two limiting parts and forms a socket with the frame, so that the connecting strip can be inserted into the socket and overlapped with the support part.

[0008] Optionally, the support portion has mounting holes.

[0009] Optionally, the bracket further includes a reinforcing part that connects the support part and the frame.

[0010] Optionally, the mounting portion includes a plurality of through holes for the electrode post to pass through, and the plurality of through holes are arranged sequentially at intervals.

[0011] Optionally, the mounting portion further includes a plurality of partitions, which are arranged sequentially at intervals to separate two adjacent through holes.

[0012] Based on the above technical solutions, this disclosure also provides a battery pack, including a battery group, a connecting strip, and the aforementioned bracket for the battery pack. The bracket is disposed between two battery groups, and the connecting strip is electrically connected to the two battery groups and supported by the support portion of the bracket.

[0013] Optionally, the battery pack includes a support beam disposed between the bracket and the battery pack, and the support beam has a clearance portion for avoiding the connecting bar, so that the connecting bar can cross the support beam to connect the two battery packs.

[0014] Optionally, the clearance portion is configured as a recessed opening from the end face of the support beam.

[0015] Optionally, the connecting bar includes a first connecting bar and a second connecting bar, one end of the first connecting bar and one end of the second connecting bar are respectively connected to two battery packs, and the other ends of the first connecting bar and the other ends of the second connecting bar are stacked on the support portion and connected to it, and the support portion, the first connecting bar and the second connecting bar are at least partially accommodated within the recess.

[0016] Optionally, the battery pack further includes an insulating element disposed on the support beam and comprising an insulating body and two connecting flanges, the two connecting flanges being respectively connected to two opposite side ends of the insulating body and arranged at an angle to the insulating body.

[0017] Optionally, the insulating body is U-shaped and fits the surface of the notch, and the two connecting flanges fit the two opposite surfaces of the support beam.

[0018] Based on the above technical solutions, this disclosure also provides an electrical device, including the above-mentioned bracket for a battery pack, or the above-mentioned battery pack.

[0019] Through the above technical solution, the bracket for the battery pack provided in this disclosure includes a frame and a support part connected to the frame. That is, the bracket has a built-in support part, which can provide strong support for the connecting bar after assembly to cope with the welding pressure during the manufacturing process. In addition, compared with the technical solution of setting a separate support part, this method can not only reduce the assembly difficulty of the battery pack, but also avoid the problem of large dimensional tolerances between the mating parts due to too many mating parts, which would lead to increased tensile stress between the connecting bar and the battery cell. This can improve the reliability of the conductive connection between the two battery packs.

[0020] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of a bracket for a battery pack provided in an embodiment of this disclosure;

[0023] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle;

[0024] Figure 3 This is a schematic diagram of the structure of the battery pack provided in an embodiment of this disclosure;

[0025] Figure 4 This is a cross-sectional view of the battery pack provided in an embodiment of this disclosure;

[0026] Figure 5 This is a schematic diagram of the structure of the bracket and connecting strip for the battery pack provided in an embodiment of this disclosure;

[0027] Figure 6 This is another structural schematic diagram of the bracket and connecting strip for the battery pack provided in an embodiment of this disclosure.

[0028] Explanation of reference numerals in the attached figures

[0029] 1-Bracket; 11-Frame; 12-Support; 121-Mounting hole; 13-Limiting part; 14-Socket; 15-Reinforcing part; 16-Mounting part; 161-Through hole; 162-Baffle; 2-Connecting row; 21-First connecting row; 22-Second connecting row; 3-Battery pack; 31-First battery pack; 32-Second battery pack; 33-Battery cell; 4-Support beam; 41-Allowing part; 5-Insulating component; 51-Insulating body; 52-Connecting flange; 100-Battery pack. Detailed Implementation

[0030] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0031] In this disclosure, unless otherwise stated, the terms "first," "second," etc., are used to distinguish one element from another and do not have sequential or material significance. Furthermore, in the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings denote the same or similar elements. The above definitions are for explanation and illustration only and should not be construed as limiting this disclosure.

[0032] Based on the specific embodiments provided in this disclosure, refer to Figures 1 to 6 As shown, a bracket 1 for a battery pack is provided. The bracket 1 is disposed between two battery packs 3 and includes: a frame 11, on which a mounting portion 16 for mounting terminals is provided; and a support portion 12, which is connected to the frame 11 and protrudes from the frame 11 to support the connecting row 2 between the two battery packs 3.

[0033] Through the above technical solution, in the battery pack bracket provided in this disclosure, the bracket 1 includes a frame 11 and a support part 12 connected to the frame 11. That is to say, the bracket 1 has a built-in support part 12, which can provide strong support for the connecting strip 2 after assembly to cope with the welding pressure during the manufacturing process. In addition, compared with the technical solution of setting the support part 12 separately, this method can not only reduce the assembly difficulty of the battery pack 100, but also avoid the problem of large dimensional tolerances between the mating parts due to the large number of mating parts, which leads to increased tensile stress between the connecting strip 2 and the battery cell 33. This can improve the reliability of the conductive connection between the two battery packs 3.

[0034] In this disclosure, the support portion 12 and the frame 11 can be connected by an integral molding process, such as injection molding. This allows the connecting strip 2 to be supported on the frame 11 via the support portion 12, facilitating the collection of current between the two battery packs 3. The frame 11 also has a mounting portion 16 for mounting terminals. Each battery pack 3 includes multiple cells, each cell including a terminal. These terminals are connected to the frame 11 via their respective mounting portions 16. Correspondingly, a busbar for conductive connection between cells can also be arranged on the frame 11 to facilitate the collection of current within a single battery pack 3. Furthermore, the integral molding of the support portion 12 and the frame 11 simplifies the manufacturing process of the bracket 1 and improves its overall integrity and structural strength, thereby enhancing the reliability of the support portion 12 in supporting the connecting strip 2. In other embodiments, the support portion 12 can also be connected to the frame 11 in any suitable manner, such as adhesive bonding or fastener connection; this disclosure does not impose specific limitations in this regard.

[0035] In the battery pack bracket provided in this disclosure, to further facilitate the installation of the connector 2 on the bracket 1, as an exemplary embodiment, a socket 14 may be provided on one side of the support portion 12 for the connector 2 to be inserted into the socket 14 and overlapped on the support portion 12. Thus, the socket 14 provides a certain pre-installation function for the connector 2. Before fixing the connector 2 to the support portion 12, the connector 2 can be inserted into the socket 14 and overlapped on the support portion 12, thereby defining the position of the connector 2 to facilitate subsequent fixing of the connector 2 to the support portion 12 and welding of the connector 2 to the battery cell 33.

[0036] The socket 14 can be constructed in any suitable form, and this disclosure does not impose any specific limitations on it. As an exemplary embodiment, the socket 14 can be constructed as a notch on the support portion 12, facing the frame 11. That is, the edge of the support portion 12 facing the frame 11 is at least partially recessed away from the frame 11. This ensures the connection between the support portion 12 and the frame 11 while simultaneously forming the socket 14 together with the frame 11 through the notch, allowing the connector 2 to be inserted. In other embodiments, the socket 14 can also be constructed as a slot on the support portion 12, similarly allowing the connector 2 to be inserted for pre-installation. This disclosure does not impose any specific limitations on this.

[0037] In the battery pack holder provided in this disclosure, as an exemplary embodiment, reference is made to... Figure 1 , Figure 5 and Figure 6 As shown, the bracket 1 may include two limiting parts 13, which may be spaced apart on the frame 11. A support part 12 may be arranged between the two limiting parts 13 and the frame 11, forming a socket 14 for the connecting strip 2 to be inserted into the socket 14 and overlapped with the support part 12. Thus, the support part 12 can be connected to the frame 11 through the limiting parts 13, and together with the limiting parts 13 and the frame 11, forms the socket 14 for the connecting strip 2 to be inserted, facilitating the installation of the connecting strip 2. The limiting parts 13 provide an installation platform for the support part 12 on the frame 11. In this disclosure, the limiting parts 13 are plate-shaped and angled relative to the frame 11. This allows the support part 12 to be connected to the limiting parts 13 at any suitable position from the frame 11, depending on the thickness of the connecting strip 2 and the required size of the socket 14, ensuring the structural strength of the support part 12 while meeting the installation requirements of connecting strips 2 of different sizes.

[0038] In the battery pack bracket provided in this disclosure, the connecting strip 2 and the support portion 12 can be fixed in any suitable manner, and this disclosure does not impose any specific limitations on this. As an exemplary embodiment, refer to... Figure 1As shown, the support portion 12 may have a mounting hole 121. In this way, the connecting strip 2 may have a mating hole that mates with the mounting hole 121. Fasteners are passed through the mating hole and the mounting hole 121 in sequence and tightened to fix the connecting strip 2 and the support portion 12.

[0039] In other embodiments, the connecting strip 2 and the support portion 12 can also be fixed by any other suitable means, such as welding, riveting, etc., and this disclosure does not impose any specific limitations on this.

[0040] In the battery pack bracket provided in this disclosure, in order to further improve the reliability of the support 12 supporting the connecting row 2, as an exemplary embodiment, reference is made to... Figure 1 As shown, the bracket 1 may further include a reinforcing part 15, which connects the supporting part 12 and the frame 11. This provides support for the supporting part 12, preventing deformation, bending, or even breakage. In this disclosure, the reinforcing part 15 is constructed as a reinforcing wing plate. Due to the presence of two limiting parts 13, the number of reinforcing wing plates can also be two, each connecting the two limiting parts 13 to the supporting part 12. That is, the two reinforcing wing plates are also spaced apart. This improves the reliability of the supporting part 12's support for the connecting row 2 while also facilitating the passage of the connecting row 2 between the two reinforcing parts 15, preventing interference from the reinforcing parts 15 during the installation of the connecting row 2.

[0041] In other embodiments, the reinforcing part 15 can also be constructed in any suitable form, such as a support rod provided between the supporting part 12 and the limiting part 13, which can also achieve the purpose of improving the reliability of the supporting part 12 in supporting the connecting row 2. This disclosure does not impose any specific limitations on this.

[0042] In the battery pack bracket provided in this disclosure, the mounting portion 16 can be constructed in any suitable form, and this disclosure does not impose any specific limitations on it. As an exemplary embodiment, refer to... Figure 1 As shown, the mounting portion 16 may include a plurality of through holes 161 for the terminals to pass through, and the plurality of through holes 161 are arranged sequentially at intervals. In this way, the battery pack 3 can be arranged on the first side of the frame 11, each battery pack 3 including a plurality of cells, each cell having a terminal, the terminal extending through the through holes 161 to the second side of the frame 11. Thus, a plurality of busbars for realizing the conductive connection between the cells can be arranged on the second side of the frame 11. The frame 11 provides space for the installation of the terminals and busbars, so as to facilitate the collection of current within a single battery pack.

[0043] The mounting section 16 may also include a plurality of partitions 162, which may be arranged in sequence at intervals to separate two adjacent through holes 161. The arrangement of the partitions 162 can improve the prevention of contact between the terminals of two adjacent cells.

[0044] Based on the above technical solutions, this disclosure also provides a battery pack, including a battery pack 3, a connecting bus 2, and the aforementioned bracket 1 for the battery pack. The bracket 1 is disposed between two battery packs 3, and the connecting bus 2 electrically connects the two battery packs 3 and is supported by the support portion 12 of the bracket 1. The bracket 1 is used to assemble multiple battery cells 33 together to form the battery pack 3. Furthermore, the bracket 1 provides installation space for a busbar, thereby enabling series connection between the battery cells 33. The design of the support portion 12 on the bracket 1 facilitates the installation of the connecting busbar 2 within the battery pack 100. (Refer to...) Figure 5 and Figure 6 As shown, by inserting the connecting strip 2 onto the bracket 1 and overlapping it with the support part 12, it is easy to weld the connecting strip 2 to the terminal post of the battery cell 33, and it is also easy to fix the connecting strip 2 to the support part 12.

[0045] In the battery pack provided in this disclosure, as an exemplary embodiment, reference is made to... Figure 3 and Figure 4 As shown, the battery pack 100 includes a support beam 4, which is arranged between the bracket 1 and the battery pack 3. The support beam 4 may have a clearance portion 41 for accommodating the connecting strip 2, allowing the connecting strip 2 to cross the support beam 4 and connect two battery packs 3. In this way, the connecting strip 2 can extend from one side of the support beam 4 to the other side through the clearance portion 41 to achieve a conductive connection between two battery packs 3 located on both sides of the support beam 4.

[0046] The avoidance part 41 can be constructed in any suitable form, and this disclosure does not impose any specific limitations on it. As an exemplary embodiment, refer to... Figure 3 As shown, the clearance portion 41 can be configured as a recessed notch from the end face of the support beam 4. In this way, the connecting strip 2 can pass through the notch to achieve a conductive connection between the two battery packs 3. In addition, the notch can also provide a certain degree of protection for the connecting strip 2, preventing it from being squeezed by other components due to vibration or other reasons during the use of the battery pack 100.

[0047] Furthermore, the notch facilitates the installation of the insulating component 5 on the support beam 4. The notch requires the insulating component 5 to cover the three end faces formed by the notch. The insulating component 5 can be installed from above the support beam 4, making installation convenient. Provided that the insulation performance between the support beam 4 and the connecting row 2 is guaranteed, in some other embodiments, the clearance portion 41 can also be constructed as a channel penetrating the support beam 4 along its thickness direction; this disclosure does not impose specific limitations in this regard.

[0048] Based on the above embodiments, to facilitate the conductive connection between the two battery packs 3, the connecting strip 2 may include a first connecting strip 21 and a second connecting strip 22. One end of the first connecting strip 21 and one end of the second connecting strip 22 can be connected to the two battery packs 3 respectively. The other ends of the first connecting strip 21 and the second connecting strip 22 can be stacked on the support portion 12 and connected. The support portion 12, the first connecting strip 21, and the second connecting strip 22 can be at least partially accommodated within the recess. In this way, when installing the battery pack 100, the first connecting strip 21 can be inserted into the socket 14 and overlapped with the support portion 12 firstly, and then the second connecting strip 22 can be overlapped on top of the first connecting strip 21, thereby achieving support of the first connecting strip 21 and the second connecting strip 22 by the support portion 12. Furthermore, in the height direction of the battery pack 100, the support part 12, the first connecting row 21 and the second connecting row 22 are stacked below the top end face of the support beam 4, thereby avoiding affecting the installation of other components of the battery pack 100, such as avoiding affecting the support beam 4's support for the top cover or liquid cooling plate of the battery pack 100; in the horizontal direction of the battery pack 100, the distance between the two battery packs 3 can be shortened, thereby increasing the energy density of the battery pack 100.

[0049] In the battery pack provided in this disclosure, in order to further improve the reliability of the conductive connection between the two battery packs 3, as an exemplary embodiment, reference is made to... Figure 3 As shown, the battery pack 100 may further include an insulating element 5, which can be disposed on the support beam 4 and includes an insulating body 51 and two connecting flanges 52. The two connecting flanges 52 can be respectively connected to two opposite side ends of the insulating body 51 and are arranged at an angle to the insulating body 51. In this way, it can prevent the connecting strip 2 from contacting the support beam 4 due to vibration or other reasons during normal operation of the battery pack 100, thereby preventing short circuits or leakage in the battery pack 100 and improving the electrical safety of the battery pack 100.

[0050] The insulating body 51 can be constructed in a U-shape and fits against the surface of the recess. The two connecting flanges can respectively fit against the two opposite surfaces of the support beam 4. Thus, when installing the insulating component 5, it is only necessary to press the insulating component 5 downwards from above the recess to make the insulating body 51 fit against the surface of the recess, and the connecting flanges 52 fit against the two sides of the support beam 4 in its thickness direction, thereby fixing the insulating component 5 to the support beam 4. For ease of description, the two battery packs 3 are respectively named the first battery pack 31 and the second battery pack 32, wherein the first connecting bar 21 is connected to the first battery pack 31, and the second connecting bar 22 is connected to the second battery pack 32.

[0051] In summary, during assembly, the battery pack provided in this disclosure first inserts the first connecting strip 21 into the socket 14 of the bracket 1 and places it on the support part 12, thereby achieving pre-installation of the first connecting strip 21 (see reference). Figure 5 and Figure 6 (As shown in the diagram), then the first connecting strip 21 is welded to the output end of the first battery pack 31, and the second connecting strip 22 is welded to the output end of the second battery pack 32. Then, the first battery pack 31, the second battery pack 32, and the support beam 4 are assembled into the housing. The first battery pack 31 and the second battery pack 32 are respectively located on both sides of the support beam 4. The bracket 1 is set between the first battery pack 31 and the support beam 4. At this time, the support part 12, the first connecting strip 21, and the second connecting strip 22 are all located in the recess of the support beam 4. The insulating part 5 can be pre-assembled in the recess on the support beam 4. Finally, the first connecting strip 21 and the second connecting strip 22 are riveted to the support part 12 and welded in the riveting area. This ensures the reliability of the connection between the first connecting strip 21 and the second connecting strip 22, and avoids the situation where the internal resistance increases due to poor contact between the first connecting strip 21 and the second connecting strip 22.

[0052] It should be further explained that the battery pack 3 includes multiple cells 33, each cell 33 having a terminal post. The bracket 1 has a through hole 161 for the terminal post to pass through from the first side to the second side. The first battery pack 31 and the second battery pack 32 are respectively located on both sides of the bracket 1, and the first connecting strip 21 is located between the first battery pack 31 and the bracket 1. In this way, the terminal post of the first battery pack 31 first passes through the first connecting strip 21 and contacts the first connecting strip 21, and then passes through the through hole 161 to the other side of the bracket 1. Subsequently, the first connecting strip 21 is welded to the terminal post, thereby realizing the conductive connection between the first connecting strip 21 and the first battery pack 31.

[0053] Based on the above technical solutions, this disclosure also provides an electrical device, including the aforementioned battery pack 100. This electrical device can be a vehicle, such as a hybrid vehicle or a pure electric vehicle; this disclosure does not impose specific limitations on this. Furthermore, the battery pack 100 possesses all the technical features of the aforementioned battery pack 100, which will not be elaborated upon here.

[0054] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0055] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0056] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A bracket for a battery pack, characterized in that, The bracket is disposed between the two battery packs and includes: A frame, wherein the frame is provided with a mounting part for mounting the pole; and A support portion, which is connected to and protrudes from the frame to support the connection row between the two battery packs.

2. The bracket for a battery pack according to claim 1, characterized in that, The support part is integrally formed with the frame.

3. The bracket for a battery pack according to claim 1, characterized in that, A socket is provided on one side of the support, so that the connector can be inserted into the socket and overlapped with the support.

4. The bracket for a battery pack according to claim 1, characterized in that, The bracket includes two limiting parts, which are spaced apart on the frame. The support part is arranged between the two limiting parts and forms a socket with the frame, so that the connecting strip can be inserted into the socket and overlapped with the support part.

5. The bracket for a battery pack according to claim 1, characterized in that, The support portion has mounting holes.

6. The bracket for a battery pack according to any one of claims 1-5, characterized in that, The bracket also includes a reinforcing part, which connects the supporting part and the frame.

7. The bracket for a battery pack according to claim 1, characterized in that, The mounting section includes multiple through holes for the electrode post to pass through, and the multiple through holes are arranged sequentially at intervals.

8. The bracket for a battery pack according to claim 7, characterized in that, The mounting section also includes a plurality of partitions, which are arranged sequentially at intervals to separate two adjacent through holes.

9. A battery pack, characterized in that, The device includes a battery pack, a connector, and a support for the battery pack according to any one of claims 1-8, the support being disposed between two battery packs, the connector electrically connecting the two battery packs and supported on a support portion of the support.

10. The battery pack according to claim 9, characterized in that, The battery pack includes a support beam disposed between the bracket and the battery pack, and the support beam has a clearance portion for accommodating the connecting bar so that the connecting bar can cross the support beam to connect two battery packs.

11. The battery pack according to claim 10, characterized in that, The clearance portion is constructed as a recessed opening from the end face of the support beam.

12. The battery pack according to claim 11, characterized in that, The connecting bar includes a first connecting bar and a second connecting bar. One end of the first connecting bar and one end of the second connecting bar are respectively connected to two battery packs. The other ends of the first connecting bar and the other ends of the second connecting bar are stacked on the support portion and connected to it. The support portion, the first connecting bar and the second connecting bar are at least partially accommodated within the recess.

13. The battery pack according to claim 11, characterized in that, The battery pack also includes an insulating component disposed on the support beam and comprising an insulating body and two connecting flanges. The two connecting flanges are respectively connected to two opposite side ends of the insulating body and are arranged at an angle to the insulating body.

14. The battery pack according to claim 13, characterized in that, The insulating main body is U-shaped and fits the surface of the notch, and the two connecting flanges fit the two opposite surfaces of the support beam.

15. An electrical appliance, characterized in that, Includes a bracket for a battery pack according to any one of claims 1-8, or a battery pack according to any one of claims 9-14.

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