A battery cell support applied to a battery cell pack

Abstract

The utility model discloses a kind of battery cell support applied to battery cell package, including battery cell support, and the battery cell package box body of assembly setting with the battery cell support, the battery cell support is divided into upper support and lower support, both are equidistant and mutually aligned with multiple battery cell auxiliary counterbore and positioning guide pillar are shaped;The upper support and lower support are connected fixed by screw to each other;The upper support is also shaped with several limit posts for busbar and FPC positioning setting;Busbar and FPC are all provided with through hole to align limit post and assemble setting;The battery cell auxiliary counterbore is all through hole design, wherein the lower battery cell auxiliary counterbore of lower support is circular hole design shaped, and the upper battery cell auxiliary counterbore of upper support is based on circular hole design and also makes semicircular outer expansion through hole structure;The contact foot of contact in busbar with each battery cell is made into bending structure;Busbar is connected with FPC by aluminium sheet to be communicated with the battery cell electrically connected.

Description

Technical Field

[0001] This utility model belongs to the technical field of battery cell module accessories, and in particular relates to a battery cell bracket used in battery cell packs. Background Technology

[0002] With the continuous development of energy storage devices, customers are demanding higher and higher performance from these devices. The wire harness isolation plate assembly, as the core component of the energy storage cell module, is used to separate the wire harness from the cell to protect the cell.

[0003] However, the wiring of the wire harness on the current wire harness isolation plate assembly is quite messy, which can easily cause interference between the wire harness and the laser welding machine when the aluminum bar is welded to the battery cell, leading to poor welding. Utility Model Content

[0004] This invention provides a cell support for use in cell packs to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A cell support for a battery pack includes a cell support and a battery pack housing on which the cell support is assembled. The cell support is characterized in that the cell support is divided into an upper support and a lower support, both of which are equidistantly and aligned with each other and have multiple cell auxiliary mounting countersunk holes and positioning guide posts formed thereon.

[0007] The upper and lower brackets are connected and fixed to each other by screws;

[0008] The upper support is also formed with several limiting posts for positioning the busbar and the FPC.

[0009] Both the busbar and the FPC are provided with through holes for aligning and assembling the positioning and limiting posts.

[0010] All the countersunk holes for battery cell assembly are through holes. The lower countersunk hole for battery cell assembly on the lower bracket is a round hole, while the upper countersunk hole for battery cell assembly on the upper bracket is a through hole structure with a semi-circular outward expansion based on the round hole design.

[0011] The contacts in the busbar that make electrical contact with each battery cell are all bent.

[0012] The busbar that is electrically connected to the battery cell is connected to the FPC via aluminum sheets.

[0013] Preferably, each of the contacts in the busbar is reinforcedly connected to the battery cell by welding within the countersunk hole of the upper battery cell assembly.

[0014] Preferably, the busbar.

[0015] Preferably, the busbar is formed by a hot-melt process and can group-connect the battery cells as required, that is, the number of battery cells that a busbar can connect is four or more battery cells.

[0016] Preferably, auxiliary fixing parts are designed and installed on both sides of the battery cell package box body.

[0017] Preferably, the auxiliary fixing parts are provided with screw holes and clamping holes for installing a handle.

[0018] Preferably, a structural heat-conducting glue is coated on the bottom of the inner cavity of the battery cell package box to assist in heat dissipation and reinforcement installation for the battery cell bracket on which the battery cells are fixedly assembled.

[0019] Preferably, a front beam provided with screw holes is arranged inside the inner cavity of the battery cell package box to further assist in the positioning and assembly of the battery cell package.

[0020] Compared with the prior art, the advantages of the present utility model are as follows:

[0021] Based on the fact that the positive and negative electrodes of each battery cell need to be unified on the same side during the installation and use of the battery cells, the present utility model optimizes the structure of the battery cell bracket to ensure that the battery cells can be stably assembled, and at the same time, there is a reasonable electrical gap between the battery cells to improve safety;

[0022] The battery cell bracket of the present utility model is assembled by an upper bracket and a lower bracket. Such a design is convenient for installation and disassembly, and the upper battery cell auxiliary mounting sunken holes on the upper bracket are subjected to an expansion hole treatment. Such a design provides sufficient welding space and positions to reduce the incidence of defective problems when the contact feet of the busbar are welded and connected to the battery cells;

[0023] The busbar of the present utility model is made by a hot-melt process, and the FPC used for voltage sampling is a flexible circuit board. Both can be integrally assembled on the upper bracket formed by one-piece molding. Such a structure and assembly cooperation can not only simplify the manufacturing process, but also reduce the assembly during production and the difficulty of disassembly and maintenance in the future;

[0024] The outside of the battery cell package box of the present utility model is provided with a "U"-shaped auxiliary fixing part, which can not only serve as a mounting and fixing point to ensure that the force during side installation is not at the flanging of the battery cell package box body, but also can be equipped with a handle for lifting and screwing when it needs to be carried and moved.

[0025] When the battery cell bracket of the present utility model is arranged inside the battery cell package box, a structural heat-conducting glue is coated on the bottom of its inner cavity. It can not only increase the heat exchange area and cooling efficiency, but also play a role in fixing and positioning the lower bracket. Similarly, the front beam arranged inside the inner cavity of the battery cell package box can significantly improve the stability and safety of the present utility model. Brief Description of the Drawings

[0026] Figure 1 This is an assembly drawing of the present utility model.

[0027] Figure 2 This is a schematic diagram of the internal assembly of the present invention.

[0028] Figure 3 This is an assembly diagram of the battery cell bracket of this utility model with the battery cell installed.

[0029] Figure 4 This is a schematic diagram of the structure of the battery cell support of this utility model.

[0030] Figure 5 This is a schematic diagram of the structure of the lower support of this utility model.

[0031] Figure 6 This is a schematic diagram of the upper support structure of this utility model.

[0032] Figure 7 This is an exploded view of the upper support and busbar of this utility model.

[0033] Figure 8 This is a partial structural schematic diagram of the busbar of this utility model.

[0034] Figure 9 This is a schematic diagram of a partial assembly structure of the present invention.

[0035] Figure 10 This utility model presents a schematic diagram of the structure of the front beam inside the battery cell housing. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] like Figures 1 to 9 As shown, this utility model is a battery cell support for battery cell packs, mainly including a battery cell support (1) and a battery cell pack housing (2) on which the battery cell support (1) is assembled.

[0038] The battery cell support (1) is divided into an upper support (11) and a lower support (12). Both are equidistant and aligned with each other, forming multiple battery cell auxiliary countersunk holes (100) and positioning guide posts (101). The two ends of the battery cell (3) are fitted and embedded in the battery cell support (1) through the battery cell auxiliary countersunk holes (100) in the upper and lower supports to fix it in the battery cell support (1). The positioning guide post (101) is provided with internal threads for bolts to be screwed in to connect the upper support (11) and the lower support (12).

[0039] It is worth mentioning that the bus (10) of this utility model is made by hot melting process, while the FPC (13) used to sample voltage is a flexible circuit board. Both can be integrated and mounted on the upper bracket (11) based on one-piece molding. Such structure and assembly not only simplifies the manufacturing process, but also reduces the difficulty of production assembly and subsequent disassembly and maintenance. In order to facilitate the assembly and positioning of the bus (10) and the FPC (13), the upper bracket (11) is formed with several limiting posts (15), and the bus (10) and the FPC (13) are also provided with positioning holes (14) to align with the limiting posts (15) for assembly. The bus (10) and the FPC (13) can be quickly positioned and assembled by fitting together. The bus (10) which is electrically connected to the battery cell (3) is connected to the FPC (13) through an aluminum sheet.

[0040] The battery cell bracket (1) equipped with battery cell (3), busbar (10) and FPC (13) needs to be welded to connect the battery cell (3) and busbar (10). It can be noted that the battery cell auxiliary countersunk holes (100) are all through holes. The lower battery cell auxiliary countersunk hole (120) of the lower bracket (12) is a round hole, while the upper battery cell auxiliary countersunk hole (110) of the upper bracket (11) is a through hole structure with a semi-circular outward expansion based on the round hole design. This design provides sufficient welding space and position to reduce the incidence of defects when the contacts (102) of the busbar (10) are welded to the battery cell (3). The contacts (102) of the busbar (10) that make electrical contact need to be bent to be closer to the battery cell (3) located below the upper battery cell auxiliary countersunk hole (110).

[0041] Further explanation regarding the battery pack housing (2) is that auxiliary mounting fasteners (20) are designed and installed on both sides of the battery pack housing (2). The auxiliary mounting fasteners (20) have screw holes (21) and locking holes (22) for adding handles. This "U"-shaped auxiliary mounting fastener (20) not only serves as a mounting fixing point to ensure that the force during side installation is not at the flange of the battery pack housing (2), but also allows for the addition of handles for easy lifting and tightening when it needs to be moved. In addition, the bottom of the inner cavity of the battery pack housing (2) is coated with structural thermal conductive adhesive, which not only increases the heat exchange area and cooling efficiency, but also provides a fixed position for the lower support (12). Similarly, the front beam (23) set in the inner cavity of the battery pack housing (2) significantly improves the stability and safety of this utility model.

[0042] This utility model is based on the fact that when the battery cell (3) is installed and used, the positive and negative poles of each battery cell (3) must be on the same side. This utility model optimizes the structure of the battery cell bracket (1) to ensure that the battery cell (3) can be assembled stably, while the battery cell (3) has a reasonable electrical clearance between the battery cells (3) to improve safety. Other reasonable structural designs make this utility model safe, practical, stable and easy to install and disassemble.

[0043] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "a solution," "some solutions," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that solution or example is included in at least one solution or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same solution or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more solutions or examples.

Claims

1. A cell support for a battery pack, comprising a cell support (1) and a battery pack housing (2) on which the cell support (1) is assembled, characterized in that, The battery cell support (1) is divided into an upper support (11) and a lower support (12). Both are equidistantly and aligned with each other, forming multiple battery cell auxiliary mounting countersunk holes (100) and positioning guide posts (101). The upper support (11) and the lower support (12) are connected and fixed to each other by screws. The upper support (11) is also formed with several limiting posts (15) for positioning the busbar (10) and the FPC (13). The busbar (10) and the FPC (13) are both provided with positioning holes (14) for aligning with the limiting posts (15) for assembly. The battery cell auxiliary mounting countersunk holes (100) are all through holes. The lower battery cell auxiliary mounting countersunk hole (120) of the lower support (12) is a round hole, while the upper battery cell auxiliary mounting countersunk hole (110) of the upper support (11) is a through hole structure with a semi-circular outward expansion based on the round hole design. The contacts (102) in the busbar (10) that make electrical contact with each cell (3) are all bent; The busbar (10) that is electrically connected to the battery cell (3) is connected to the FPC (13) through an aluminum sheet.

2. A cell support for a cell pack according to claim 1, characterized in that, Each of the contacts (102) in the busbar (10) is reinforcedly connected to the battery cell (3) in the upper battery cell mounting countersunk hole (110) by welding.

3. A cell support for a cell pack according to claim 1, characterized in that, The busbar (10) is formed by hot melting process and can connect the battery cells (3) in groups as needed. That is, the number of battery cells (3) that can be connected by one busbar (10) is four or more.

4. A cell support for a cell pack according to claim 1, characterized in that, The battery cell housing (2) is equipped with auxiliary fasteners (20) on both sides.

5. A cell support for a cell pack according to claim 4, characterized in that, The auxiliary fastener (20) has screw holes (21) and locking holes (22) for attaching a handle.

6. A cell support for a cell pack according to claim 1, characterized in that, The bottom of the inner cavity of the battery cell housing (2) is coated with structural thermal conductive adhesive to assist in the heat dissipation and reinforcement of the battery cell bracket (1) on which the battery cell (3) is fixedly assembled.

7. A cell support for a cell pack according to claim 1, characterized in that, The inner cavity of the battery cell housing (2) is provided with a front beam (23) with screw holes to further assist in the positioning and assembly of the battery cell support (1).

Images