Battery cell group and battery structure

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery cell group and a battery structure, the battery cell group comprises a plurality of battery cell bodies, a connecting piece, an adjusting piece and a heat insulation assembly, the connecting piece is connected with the plurality of battery cell bodies and is used for connecting the plurality of battery cell bodies in series or in parallel; each adjusting part is arranged between the two adjacent battery cell bodies and is used for adjusting the distance between the two adjacent battery cell bodies; the heat insulation assembly is connected with the adjusting piece. Therefore, under the action of the connecting piece, the plurality of battery cell bodies are mutually connected, and the distance between the adjacent battery cells can be adjusted by adjusting the adjusting piece, so that the specification of the whole battery cell group is adjusted, the battery cells with different specifications can adapt to shells with the same specification after being assembled, the battery assembly flexibility is improved, the production cost is reduced, and the production efficiency is improved; and the heat insulation assembly enables heat accumulation not to be easily generated between the adjacent battery cells, so that potential safety hazards are avoided.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery cell assembly and battery structure. Background Technology

[0002] A battery is a device that converts chemical energy into electrical energy. Batteries are simple in structure, easy to carry, convenient to charge and discharge, and reliable in performance, making them very useful in daily life.

[0003] In related technologies, a battery includes a casing and a cell. The cell is located inside the casing and is connected to an external circuit, enabling the cell to charge and discharge, and allowing the cell to provide a stable current to the external circuit.

[0004] Due to varying production requirements among manufacturers, the specifications of battery cells and batteries differ. After welding the battery cells and aluminum foil, they are integrated with steel strips and installed inside the casing. This requires the casing specifications to be compatible with the battery cell specifications. When the battery cell specifications change, the casing specifications must be modified accordingly. When using CSS integrated busbars to connect multiple battery cells, if the battery cell specifications change, they cannot correspond to the hole positions of the original CCS integrated busbars, making it impossible to weld the battery cells. At the same time, the battery cells are connected to many data acquisition cables used to collect temperature and voltage data. When assembling the battery cells inside the casing, the data acquisition cables may be accidentally locked into other positions, resulting in incorrect data collected from the battery cells. This leads to a lack of flexibility in battery assembly. Utility Model Content

[0005] The purpose of this invention is to provide a cell pack and battery structure to solve the problem of poor battery assembly flexibility.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] In a first aspect, a battery cell assembly includes multiple battery cell bodies, connectors, multiple adjusting members, and a heat insulation component. The connectors are connected to all of the multiple battery cell bodies for connecting the multiple battery cell bodies in series or in parallel. Each adjusting member is disposed between two adjacent battery cell bodies for adjusting the distance between adjacent battery cell bodies. The heat insulation component is connected to the adjusting member.

[0008] Preferably, the connector is a CCS integrated busbar, which is connected to one end of each of the multiple battery cell bodies on the same side.

[0009] Preferably, the adjusting element is adjusting foam.

[0010] Preferably, the heat insulation assembly includes a first heat insulation plate, which is disposed between the side walls of adjacent battery cell bodies that are close to each other. One first heat insulation plate and at least two adjustment members form a group, and the adjustment members in the same group are respectively disposed on both sides of the first heat insulation plate facing the battery cell body.

[0011] Preferably, the heat insulation component further includes a second heat insulation plate, with one first heat insulation plate and at least two second heat insulation plates forming a group. The second heat insulation plates in the same group are located on both sides of the first heat insulation plate facing the battery cell body, and the first heat insulation plate, the second heat insulation plate, and the side wall of the battery cell body together define a heat dissipation channel.

[0012] Preferably, the adjusting member is located between the first heat insulation plate and the second heat insulation plate.

[0013] Preferably, the first heat insulation panel is made of mica material, and / or the second heat insulation panel is made of mica material.

[0014] Preferably, the battery cell assembly further includes a mounting bracket connected to the battery cell body for mounting the battery cell body.

[0015] In a second aspect, a battery structure includes a housing, a cover plate, and a cell assembly, wherein the cover plate is disposed on the housing, and the cell assembly is detachably connected to the housing.

[0016] Preferably, the battery cell assembly includes a mounting bracket connected to a fastener for mounting the battery cell assembly inside the housing.

[0017] The beneficial effects of this utility model are:

[0018] This utility model provides a battery cell assembly and battery structure. The battery cell assembly includes multiple battery cell bodies, connectors, adjusting components, and a heat insulation component. The connectors are connected to all the battery cell bodies, allowing them to be connected in series or parallel. The adjusting components are disposed between the sidewalls of adjacent battery cell bodies to adjust the distance between them. The heat insulation component is connected to the adjusting components. Thus, the multiple battery cell bodies connected by the connectors can provide a stable current to the external circuit. Under the action of the adjusting components, the distance between adjacent battery cell bodies can be adjusted according to actual needs, allowing battery cells of different specifications to adapt to the same specification of casing, improving battery assembly efficiency, making assembly more flexible, and reducing the cost incurred by customizing different specification casings. The heat insulation component can reduce heat accumulation between adjacent battery cell bodies, avoiding safety hazards such as fire and explosion due to excessive heat. Attached Figure Description

[0019] Figure 1 This is an exploded view of the battery cell assembly in one embodiment of this utility model;

[0020] Figure 2 This is a partial enlarged view of point A of the thermal insulation component in one embodiment of the present invention;

[0021] Figure 3 This is an exploded view of a heat insulation component in one embodiment of the present invention;

[0022] Figure 4 This is a partial structural schematic diagram of the battery structure in one embodiment of the present invention.

[0023] In the picture:

[0024] 1. Battery cell body; 2. Connector; 3. Adjustment component; 4. Heat insulation assembly; 41. First heat insulation plate; 42. Second heat insulation plate; 5. Mounting bracket; 51. Fixing component; 6. Housing. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0026] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 or an electrical 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 based on the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0029] See Figure 1 and Figure 2 This utility model provides a battery cell assembly, including multiple battery cell bodies 1, connectors 2, adjusting members 3, and a heat insulation component 4. The connectors 2 are connected to multiple battery cell bodies 1 to connect the multiple battery cell bodies 1 in series or in parallel. Multiple adjusting members 3 are provided, and each adjusting member 3 is provided between the side walls of two adjacent battery cell bodies 1 that are close to each other, to adjust the distance between adjacent battery cell bodies 1. The heat insulation component 4 is connected to the adjusting members 3.

[0030] Thus, regardless of whether it is a pouch cell or a prismatic cell structure, the distance between the internally installed cell bodies 1 can be adjusted by the adjusting component 3, so that cell bodies 1 of different specifications can be assembled to adapt to the same specification of housing 6 and connector 2, improving the flexibility and efficiency of battery assembly, and reducing the cost required to customize housings 6 and connectors 2 of various specifications; the heat insulation component 4 can insulate the sides of adjacent cell bodies 1 that are close to each other, reducing the heat accumulation between cell bodies 1 and avoiding safety hazards.

[0031] It is understood that the number and arrangement of the battery cell bodies 1 can be adjusted according to actual needs, and will not be listed in detail here. In this embodiment, multiple battery cell bodies 1 are arranged side by side, and the number of battery cell bodies 1 in the two rows is the same.

[0032] See Figure 1 In some embodiments, the connector 2 is a CCS (Combined Charging System) integrated busbar, which is connected to one end of multiple battery cell bodies 1 on the same side.

[0033] The CCS integrated busbar is connected to one end of the cell body 1 with a pole post, enabling the CCS integrated busbar to integrate multiple cell bodies 1 and collect data such as temperature and voltage of the cell bodies 1.

[0034] Thus, since different specifications of battery cell bodies 1 can adapt to the same specification of CCS integrated busbar under the action of the adjustment component, multiple battery cell bodies 1 can be integrated through the CCS integrated busbar, which can reduce the distribution of internal circuits, improve assembly efficiency, and avoid the situation where the acquisition cable is connected to the wrong locking point when connected to the battery cell body 1 due to too many acquisition cables, thereby affecting the normal acquisition of data.

[0035] It is understandable that the connector 2 can also be a steel strip, and multiple battery cell bodies 1 are connected by steel strips. The connection method between multiple battery cell bodies 1 can be adjusted according to actual needs, as long as it can achieve the goal of connecting multiple battery cell bodies 1 in series or in parallel and collecting relevant data of battery cell bodies 1. Not much will be listed here.

[0036] See Figure 2 In some embodiments, the adjusting element 3 is an adjusting foam. In this embodiment, the adjusting foam is located between adjacent battery cell bodies 1 and is fixedly connected to the battery cell body 1.

[0037] In this way, adjusting foam is set between adjacent cell bodies 1. Since the foam is relatively soft and has a certain amount of compression, the distance between adjacent cell bodies 1 can be flexibly adjusted according to processing needs. This allows the overall specifications of cell bodies 1 of different specifications to be adapted to the casing 6 and CCS integrated busbar after adjustment, improving the flexibility of battery assembly and saving customization costs.

[0038] It is understandable that the adjusting element 3 can also be made of other heat-resistant materials, such as silicone rubber. The material of the adjusting element 3 can be adjusted according to actual needs, as long as it can adjust the distance between adjacent battery cell bodies 1.

[0039] See Figure 2 and Figure 3 In some embodiments, the heat insulation component 4 includes a first heat insulation plate 41, which is disposed between the side walls of adjacent battery cell bodies 1 that are close to each other. One first heat insulation plate 41 and at least two adjusting members 3 form a group, and the adjusting members 3 in the same group are respectively disposed on both sides of the first heat insulation plate 41 facing the battery cell body 1.

[0040] The longitudinal cross-sectional area of ​​the first heat insulation plate 41 is adapted to the longitudinal cross-sectional area of ​​the battery cell body 1. The first heat insulation plate 41 in the same group is equipped with six adjusting foams, which are symmetrically arranged on the two side walls of the first heat insulation plate 41 facing the battery cell body 1. The adjusting foams have a cuboid structure, and their length direction is perpendicular to the length direction of the first heat insulation plate 41. Furthermore, the adjusting foams are fixed to the first heat insulation plate 41 by adhesive bonding.

[0041] In this way, fixing the regulating foam on the first heat insulation plate 41 not only provides stable support for the regulating foam, making it less likely for the regulating foam to shift between adjacent battery cell bodies 1, but also separates the side walls of adjacent battery cell bodies 1 that are close to each other, avoiding the phenomenon of excessive local heat caused by the close proximity of adjacent battery cell bodies 1, thus preventing safety hazards.

[0042] Understandably, the connection method between the foam and the insulation board, the amount of foam, and the placement of the foam can all be adjusted according to actual needs.

[0043] See Figure 2 and Figure 3 In some embodiments, the heat insulation assembly 4 further includes a second heat insulation plate 42. One first heat insulation plate 41 and at least two second heat insulation plates 42 form a group. The second heat insulation plates 42 in the same group are respectively located on both sides of the first heat insulation plate 41 facing the cell body 1. The first heat insulation plate 41, the second heat insulation plate 42, and the sidewall of the cell body 1 together define a heat dissipation channel. In some embodiments, the adjusting member 3 is located between the first heat insulation plate 41 and the second heat insulation plate 42.

[0044] The first heat insulation board 41 in the same group is equipped with six second heat insulation boards 42. The size of the second heat insulation board 42 is slightly larger than that of the adjusting foam, and the second heat insulation board 42 is fixedly installed at the position of the heat insulation foam opposite to the first heat insulation board 41. Furthermore, three heat insulation foams located on the same side of the first heat insulation board 41 are spaced apart, and the space between the side walls of adjacent heat insulation foams forms a heat dissipation channel, so that the heat generated by the battery cell body 1 during operation can flow to the outside through the heat dissipation channel, avoiding heat accumulation between the battery cell bodies 1.

[0045] Furthermore, the heat insulation foam is fixedly connected to the second heat insulation board 42 by adhesive, and the side of the second heat insulation board 42 facing away from the heat insulation foam abuts against the outer wall of the battery cell body 1.

[0046] Thus, the second heat insulation plate 42 is set on the side of the heat insulation foam away from the first heat insulation plate 41, which can increase the distance between adjacent battery cell bodies 1, reduce the heat accumulation between adjacent battery cell bodies 1, and allow heat to flow to the outside through the heat dissipation channel formed between adjacent heat insulation foams, thereby improving the heat dissipation effect of the battery cell assembly.

[0047] It is understandable that the number of the second heat insulation board 42 may not be equal to the number of heat insulation foam. It can be adjusted according to actual needs, as long as it can form a heat dissipation channel and achieve the effect of heat insulation. No further examples will be listed here.

[0048] See Figure 2 In some embodiments, both the first heat insulation plate 41 and the second heat insulation plate 42 are made of mica material.

[0049] Thus, since mica has properties such as high temperature resistance, insulation and fire resistance, setting a first heat insulation plate 41 and a second heat insulation plate 42 between adjacent battery cell bodies 1 can not only play a heat insulation role, but also play a certain flame-retardant role when the battery cell catches fire in a runaway manner, thereby improving the safety of the battery cell assembly.

[0050] It is understandable that the materials of the first heat insulation plate 41 and the second heat insulation plate 42 can be other heat insulation materials. The specific materials can be adjusted according to actual needs, as long as they can achieve heat insulation between adjacent battery cell bodies 1.

[0051] See Figure 4 In some embodiments, the battery cell assembly further includes a mounting frame 5, which is connected to the battery cell body 1 and is used to mount the battery cell body 1.

[0052] The mounting bracket 5 is a sheet metal bracket, which is detachably connected to one end of the multiple battery cell bodies 1 that is away from the CCS integrated busbar. It is understood that the battery cell bodies 1 can be fixed to the sheet metal bracket by means of adhesive, bolts, etc., and can be adjusted according to actual needs.

[0053] In this way, by adjusting the thickness of the adjustable foam, the distance between adjacent cell bodies 1 can be adjusted so that all cell bodies 1 are connected to the CCS integrated busbar and are compatible with the specifications of the housing 6. The mounting bracket 5 is installed inside the housing 6, which can restrict the position of the cell body 1 connected to the mounting bracket 5 inside the housing 6. This achieves the effect of installing cells of different specifications inside the housing 6 of the same specification, improving the flexibility and efficiency of battery assembly.

[0054] See Figure 4 This utility model also provides a battery structure, including a housing 6, a cover plate (not shown in the figure), and a battery cell assembly. The cover plate is disposed on the housing 6, and the battery cell assembly is detachably connected to the housing 6. The housing 6 and the cover plate are detachably connected by bolts, and the battery cell assembly is detachably disposed inside the housing 6.

[0055] In this way, by adjusting the distance between adjacent cell bodies 1, multiple cell bodies 1 can be adapted to the same specification of CCS integrated busbar and housing 6, which can quickly realize the integration of multiple cell bodies 1 and reduce the variety of housing 6 specifications, thereby improving assembly flexibility and production efficiency.

[0056] It is understandable that the connection between the housing 6 and the cover plate is not limited to bolt connection. It can be adjusted according to actual needs to facilitate the installation or removal of the battery pack.

[0057] See Figure 4In some embodiments, the battery cell assembly includes a mounting bracket 5, which is connected to a fastener 51 for mounting the battery cell assembly inside the housing 6. In this embodiment, the fastener 51 is a bolt, and the mounting bracket 5 is detachably connected to the inside of the housing 6 via the bolt, allowing the battery cell assembly to be mounted to the bottom surface inside the housing 6.

[0058] In this way, by installing the mounting bracket 5 into the housing 6 with bolts, the position of the battery cell assembly can be fixed, so that the battery cell assembly is stably connected to the housing 6, and the normal operation of the battery structure is avoided due to the positional displacement of the battery cell assembly inside the housing 6.

[0059] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A battery cell assembly, characterized in that, include: Multiple battery cell bodies (1); Connector (2), the connector (2) is connected to multiple battery cell bodies (1) for connecting multiple battery cell bodies (1) in series or in parallel; Multiple adjusting members (3), each of the adjusting members (3) is disposed between two adjacent battery cell bodies (1) for adjusting the distance between the two adjacent battery cell bodies (1); Thermal insulation component (4) is connected to the adjusting component (3).

2. The battery cell assembly according to claim 1, characterized in that, The connector (2) is a CCS integrated busbar, which is connected to one end of the multiple battery cell bodies (1) on the same side.

3. The battery cell assembly according to claim 1, characterized in that, The adjusting component (3) is an adjusting foam.

4. The battery cell assembly according to claim 1, characterized in that, The heat insulation component (4) includes a first heat insulation plate (41), which is disposed between adjacent side walls of the battery cell body (1) that are close to each other. One first heat insulation plate (41) and at least two adjustment members (3) form a group, and the adjustment members (3) in the same group are respectively disposed on both sides of the first heat insulation plate (41) facing the battery cell body (1).

5. The cell assembly according to claim 4, characterized in that, The heat insulation component (4) further includes a second heat insulation plate (42). One first heat insulation plate (41) and at least two second heat insulation plates (42) form a group. The second heat insulation plates (42) in the same group are located on both sides of the first heat insulation plate (41) facing the battery cell body (1). The first heat insulation plate (41), the second heat insulation plate (42), and the side wall of the battery cell body (1) together define a heat dissipation channel.

6. The cell assembly according to claim 5, characterized in that, The adjusting member (3) is located between the first heat insulation plate (41) and the second heat insulation plate (42).

7. The battery cell assembly according to claim 5, characterized in that, The first heat insulation panel (41) is made of mica material, and / or the second heat insulation panel (42) is made of mica material.

8. The battery cell assembly according to any one of claims 1-7, characterized in that, The battery cell assembly also includes a mounting bracket (5), which is connected to the battery cell body (1) and is used to mount the battery cell body (1).

9. A battery structure, characterized in that, It includes a housing (6), a cover plate, and a battery cell assembly as described in any one of claims 1-8, wherein the cover plate is disposed on the housing (6), and the battery cell assembly is detachably connected to the housing (6).

10. The battery structure according to claim 9, characterized in that, The battery cell assembly includes a mounting bracket (5) connected to a fastener (51) for mounting the battery cell assembly inside the housing (6).

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