Support assembly and battery pack

Abstract

The utility model relates to the technical field of battery packs, and discloses a support assembly and a battery pack, the support assembly comprises a support, the support comprises a first end face and a second end face, the support is provided with a plurality of concave parts, and the concave parts respectively penetrate through the first end face and the second end face; the wire penetrates through the support and penetrates through the first end face and the second end face respectively; the battery pack provided by the utility model comprises the bracket assembly, the battery cell is arranged in the concave part of the bracket, a BMS (Battery Management System) plate is arranged on the first end surface of the bracket, a connecting piece is arranged on the second end surface of the bracket, and the lead is respectively connected with the BMS plate and the connecting piece. The utility model has the technical effects that the structure is simple, the reliability is high, and the manufacturing cost can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of battery pack, concretely relates to a support assembly and battery pack. BACKGROUND

[0002] Battery pack refers to the whole unit assembled by multiple battery modules, is used for storing and providing electric energy, has the characteristics of high energy density, high safety and easy management. The battery pack mainly includes battery module, BMS, thermal management system, electrical system and shell, wherein the battery module is the core part of the battery pack, is combined by multiple battery cells through series connection or parallel connection, and the shell can provide physical support and isolation for the battery module and the BMS to ensure the safety and reliability of the battery pack.

[0003] In the related art, the shell covers the battery module, the connecting piece is arranged between each battery cell in the battery module, the battery cells are connected in series or parallel through the connecting piece, the BMS fixing position is arranged on the shell, and the connecting piece is connected with the BMS when the BMS is assembled in the BMS fixing position.

[0004] However, the direct connection between the connecting piece and the BMS makes the distance between the connecting piece and the BMS cannot be too large, and the assembly and structural design of the shell have certain limitations, which further easily leads to the problems of complex structure of the battery pack and high manufacturing cost. UTILITY MODEL CONTENTS

[0005] In order to solve the problems in the prior art, the utility model provides a support assembly and battery pack, the BMS board and the connecting piece are connected through the lead wire arranged in the support, the structure is simple and the reliability is high, and the manufacturing cost is reduced.

[0006] The technical effects achieved by the utility model are realized through the following technical aspects:

[0007] In a first aspect, the utility model provides a support assembly, which comprises a support, a first end face and a second end face, a plurality of recessed parts for accommodating battery cells are arranged on the support, and the recessed parts respectively penetrate the first end face and the second end face; and a lead wire arranged in the support, the lead wire respectively penetrates the first end face and the second end face.

[0008] In some embodiments, the lead wire comprises a first bending part penetrating the first end face, and a second bending part penetrating the second end face.

[0009] In some embodiments, the first bending part is bent and extended into the support, and the first bending part is extended to form an extension section.

[0010] In some embodiments, the wire comprises a third bending portion between the first bending portion and the second bending portion, and the third bending portion is arranged in the bracket.

[0011] In some embodiments, the recess is matched with the battery cell, and a plurality of recesses are arranged outside the wire.

[0012] In some embodiments, the wire comprises a body, and a surface of the body is provided with a conductive layer.

[0013] In some embodiments, the bracket is provided with a foolproof opening for assembling a foolproof structure at the edge of the recess.

[0014] In the second aspect, the utility model provides a battery pack, comprising the bracket assembly, the bracket is provided with a battery cell in the recess, the bracket is provided with a BMS board on the first end surface, the bracket is provided with a connecting piece for connecting the battery cells in series or parallel on the second end surface, and the wire is connected with the BMS board and the connecting piece respectively.

[0015] In some embodiments, the BMS board is provided with a through hole, the wire is arranged in the through hole and connected with the BMS board.

[0016] In some embodiments, the connecting piece is provided with a notch, the wire is arranged in the notch and connected with the connecting piece.

[0017] In summary, the utility model has at least the following advantages:

[0018] The bracket assembly and the wire provided by the utility model assemble the battery cell in the recess, the wire is connected with the BMS board at the first end surface and connected with the connecting piece at the second end surface, the wire realizes the electrical connection between the BMS board and the connecting piece, the bracket and the wire are simple in structure and convenient to assemble, which is beneficial to improve the production efficiency and reduce the manufacturing cost, the structure design and the space arrangement of the bracket assembly are reasonable, and the compactness and the reliability of the battery pack structure can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic view of a bracket assembly of an embodiment of the utility model.

[0020] Figure 2 It is a structure schematic view of the assembly of a battery cell and a bracket assembly of an embodiment of the utility model.

[0021] Figure 3 It is Figure 1 It is a structure schematic view from another angle.

[0022] Figure 4The structure schematic view of the lead of the embodiment of the utility model.

[0023] Figure 5 The structure schematic view of the battery pack of the embodiment of the utility model.

[0024] Figure 6 For Figure 5 The structure schematic view of another angle.

[0025] Figure 7 The structure schematic view of the support at the first end face of the embodiment of the utility model.

[0026] Marked in the figure:

[0027] 1, support; 11, first end face; 12, second end face; 13, recessed part; 14, foolproof opening; 15, reinforcing strip; 2, lead; 21, first bending part; 22, second bending part; 23, extension section; 24, third bending part; 25, conductive layer; 3, BMS board; 31, through hole; 4, connecting sheet; 41, notch; 5, insertion sheet; 6, electric core. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. The described embodiments are part of the embodiments of the utility model, rather than all the embodiments.

[0029] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0030] Example 1:

[0031] Please refer to the drawings Figures 1-3 The support assembly of the utility model, including support 1 and lead 2, can be used for the connection of battery module and BMS, has simple structure and high reliability, and is beneficial to reduce manufacturing cost.

[0032] Among them, the support 1 includes the first end face 11 and the second end face 12, specifically, the first end face 11 and the second end face 12 can be oppositely arranged. A plurality of recessed parts 13 for accommodating the electric core 6 are formed on the support 1, specifically, the recessed part 13 can be a groove formed by recessing the support 1 at the first end face 11 to the second end face 12, and the recessed part 13 penetrates the first end face 11 and the second end face 12 respectively.

[0033] In some specific embodiments, the recesses 13 can be specifically provided with four, and the four recesses 13 are diagonally distributed to form a rhombic end face with the first end face 11 and the second end face 12. It can be understood that this is not a limitation on the specific number of recesses 13, and the support assembly can be selected according to the number of battery cells 6 of the actual battery module, and the battery cells 6 assembled in the recesses 13 are connected in series or parallel with each other.

[0034] At the same time, the recesses 13 are matched with the battery cells 6, and specifically, the recesses 13 can be arc-shaped grooves matched with cylindrical battery cells, the inner wall of the recesses 13 is in close contact with the surface of the battery cells 6, which is beneficial to improve the adaptability of the support 1 and the battery cells 6, so that the spatial layout of the support 1 is reasonable and the reliability is high.

[0035] The support 1 is provided with wires 2, and the wires 2 penetrate through the first end face 11 and the second end face 12. In the preferred embodiment, the wires 2 can be provided with a plurality of wires 2, and the plurality of wires 2 are arranged in parallel. The number of wires 2 can be adjusted according to the number of battery cells 6, and the wires 2 realize the electrical connection between the BMS board 3 and the connecting piece 4. Among them, a plurality of recesses 13 can be arranged on the outer side of the wires 2, and when the battery cells 6 are assembled with the support 1, the wires 2 are routed and conductively connected between a plurality of battery cells 6, and the spatial layout of the structure is reasonable, which is beneficial to the connection of the wires 2 between the BMS board 3 and the connecting piece 4.

[0036] In the preferred embodiment, the support 1 is provided with a foolproof opening 14 for assembling foolproof at the edge of the recess 13. In some specific embodiments, the foolproof openings 14 are provided with a plurality of foolproof openings 14, and the sizes of the plurality of foolproof openings 14 are different. Those skilled in the art can improve and adjust according to the actual assembly and production needs, and the arrangement of the foolproof openings 14 is beneficial to improve the flexibility of use.

[0037] In the preferred embodiment, the wires 2 can be injection molded with the support 1. During injection molding, the wires 2 are first placed in the plastic mold of the support 1, and then the plastic mold is injection molded. Injection molding of the wires 2 and the support 1 can omit the secondary assembly process, save assembly operation time, and further improve the production efficiency of the battery pack.

[0038] When the battery pack is assembled, the battery cells 6 are assembled in the recesses 13, the support 1 provides physical support for the battery cells 6 and spaces the adjacent battery cells 6. When the BMS board 3 is fixed on the first end face 11 and the connecting piece 4 is fixed on the second end face 12, the wires 2 are arranged between the first end face 11 and the second end face 12 to realize the electrical connection between the BMS board 3 and the connecting piece 4. The support assembly has simple structure and convenient assembly, compared with the traditional connection mode between the connecting piece 4 and the BMS, which is beneficial to reduce the manufacturing cost and improve the reliability of the structure.

[0039] Embodiment 2:

[0040] The difference between the embodiment and embodiment 1 is that the utility model wire 2 is further optimized in structure, please see Figure 4 .

[0041] The wire 2 of the embodiment includes a first bending portion 21 penetrating the first end face 11 and a second bending portion 22 penetrating the second end face 12.

[0042] In a preferred embodiment, the bending angles of the first bending portion 21 and the second bending portion 22 are both greater than 90°, and specifically, the first bending portion 21 and the second bending portion 22 can both be hook-shaped, so that the second bending portion 22 and the second bending portion 22 are bent towards the inside of the support 1. The provision of the first bending portion 21 and the second bending portion 22 is conducive to the positioning between the wire 2 and the injection mold during the injection molding of the support 1, and can enhance the soldering strength between the wire 2 and the BMS plate 3 or the connecting piece 4, thereby enhancing the stability of the support assembly structure.

[0043] As shown in some specific embodiments, the first bending portion 21 is bent and extends towards the inside of the support 1, and the first bending portion 21 extends to form an extension section. The provision of the extension section can increase the contact area between the wire 2 and the support 1, thereby enhancing the connection strength and further improving the reliability of the structure. Specifically, the extension section can be further bent to ensure the structural strength.

[0044] In a preferred embodiment, the wire 2 includes a third bending portion 24 located between the first bending portion 21 and the second bending portion 22 and arranged inside the support 1. The provision of the third bending portion 24 is conducive to increasing the conduction distance. By increasing the conduction distance, the wire 2 is conducive to achieving the effects of heat dissipation, balanced current distribution, improved mechanical reliability and safety, etc.

[0045] In some specific embodiments, the third bending portion 24 includes a plurality of bending structures, such as two bending structures in the embodiment, and the bending angle can be 90°. In other specific embodiments, the bending structure in the third bending portion 24 can also be a V-shaped bend, etc.

[0046] In a preferred embodiment, the wire 2 includes a body, and specifically, the body is preferably but not limited to a stainless steel wire. The body is bent to form the first bending portion 21, the second bending portion 22 and the third bending portion 24. The surface of the body is provided with a conductive layer 25, and specifically, the conductive layer 25 is preferably but not limited to a nickel plating layer. The thickness of the conductive layer 25 is greater than 3 μm, and the wire 2 has good electrical conductivity and processing performance.

[0047] Embodiment 3:

[0048] The embodiment provides a battery pack on the basis of the above-mentioned embodiments, please see Figures 5-7 .

[0049] A battery pack comprising the above bracket assembly, wherein, referring to Figure 5 and Figure 6 The bracket 1 is provided with the battery cell 6 in the recess 13, the bracket 1 is provided with the BMS plate 3 on the first end face 11, and the bracket 1 is provided with the connecting piece 4 for connecting a plurality of battery cells 6 in series or parallel on the second end face 12, and the wires 2 are connected with the BMS plate 3 and the connecting piece 4 respectively.

[0050] Specifically, the connecting piece 4 is provided with a plurality of connecting pieces 4, and the plurality of connecting pieces 4 connect a plurality of battery cells 6 in series or parallel according to actual production requirements. In the embodiment, the connecting piece 4 is provided with two connecting pieces 4, the connecting piece 4 connects the positive and negative poles of the two battery cells 6, the connecting piece 4 is correspondingly provided with the wire 2, and the connecting piece 4 realizes conduction with the BMS plate 3 through the wire 2. In the preferred embodiment, the bracket 1 is provided with a reinforcing strip 15 on the second end face 12, the reinforcing strip 15 can increase the structural strength of the bracket 1 and is spaced apart from two connecting pieces 4, so that the connecting piece 4 can be quickly positioned during assembly.

[0051] In the preferred embodiment, the BMS plate 3 is provided with a through hole 31, the wire 2 is arranged in the through hole 31 through the first bending portion 21, specifically, the first bending portion 21 can be clamped with the BMS plate 3 in the through hole 31, and then connected through soldering, so as to ensure the stability of the connection between the first bending portion 21 and the BMS plate 3. The connecting piece 4 is provided with a notch 41, and the wire 2 is arranged in the notch 41 through the second bending portion 22. The notch 41 can realize the positioning of the second bending portion 22, and the second bending portion 22 and the connecting piece 4 can be connected through soldering when the second bending portion 22 is inserted into the notch 41.

[0052] Please refer to Figure 7 In the preferred embodiment, the first end face 11 and the BMS plate 3 are provided with an insert piece 5, the insert piece 5 is provided with a folded portion, the folded portion can be correspondingly inserted into the BMS plate 3, the insert piece 5 cooperates with the wire 2 and the connecting piece 4 to realize the conduction of the circuit between a plurality of battery cells 6 in series or parallel, and the structure is simple. Specifically, the second end face 12 can be provided with a concave edge, and the concave edge is beneficial to the assembly of the insert piece 5 and improves the structural adaptability of the bracket assembly.

[0053] In the utility model, unless there is definite stipulation and limitation, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or it can be detachable connection, or it can be integrated; it can be mechanical connection, or it can be electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0054] In the description of the utility model, it is necessary to explain that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation shown based on the drawings, or is the orientation or position relation commonly placed when the utility model product is used, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.

[0055] In addition, the terms "horizontal", "vertical", "overhang" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0056] In the utility model, unless otherwise explicitly specified and limited, the first feature above or below the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature therebetween. Moreover, the first feature above, above and above the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature below, below and below the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0057] Although the description of the utility model is combined with the above specific embodiments, it is obvious that many substitutions, modifications and changes can be made by those skilled in the art according to the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A stent assembly, comprising: Comprising A support (1) comprising a first end face (11) and a second end face (12), a plurality of recesses (13) for accommodating battery cells (6) are formed on the support (1), and the recesses (13) respectively penetrate the first end face (11) and the second end face (12); and A wire (2) penetrating the support (1), and the wire (2) respectively penetrates the first end face (11) and the second end face (12).

2. The support assembly of claim 1, wherein, The wire (2) comprises A first bending portion (21) penetrating the first end face (11); and A second bending portion (22) penetrating the second end face (12).

3. The support assembly of claim 2, wherein, The first bending portion (21) is bent and extends into the support (1), and the first bending portion (21) extends to form an extension section (23).

4. The support assembly of claim 2, wherein, The wire (2) comprises a third bending portion (24) located between the first bending portion (21) and the second bending portion (22) and penetrating the support (1).

5. The support assembly of claim 1, wherein, The recesses (13) are matched with the battery cells (6), and a plurality of the recesses (13) are arranged on the outer side of the wire (2).

6. The support assembly of claim 1, wherein, The wire (2) comprises a body, and a conductive layer (25) is arranged on the surface of the body.

7. The support assembly of claim 1, wherein, The support (1) is provided with a foolproof opening (14) for assembling a foolproof device at the edge of the recess (13).

8. A battery pack, characterized by, The support assembly according to any one of claims 1-7 is provided with a battery cell (6) in the recess (13) of the support (1), a BMS board (3) is arranged on the first end face (11) of the support (1), a connecting piece (4) for connecting the battery cells (6) in series or parallel is arranged on the second end face (12) of the support (1), and the wire (2) is connected with the BMS board (3) and the connecting piece (4) respectively.

9. The battery pack of claim 8, wherein, A through hole (31) is formed on the BMS board (3), the wire (2) penetrates the through hole (31) and is connected with the BMS board (3).

10. The battery pack of claim 8, wherein, A notch (41) is formed on the connecting piece (4), the wire (2) penetrates the notch (41) and is connected with the connecting piece (4).

Images