Battery assembly, battery pack, and electric device

Abstract

This utility model discloses a battery assembly, a battery pack, and an electrical device. The battery assembly includes a cell group and a housing. The cell group includes a plurality of cells arranged along a first direction. The cell group is installed inside the housing. At least one side wall of the housing in a second direction has an adhesive opening extending along a third direction. The adhesive opening allows at least one portion of at least one cell in the cell group to be exposed. A fixing adhesive layer is provided at the adhesive opening to fix the exposed cell to the housing of the battery pack. The first direction and the second direction intersect, and the third direction intersects both the first direction and the second direction. This eliminates the need for internal glue injection in the battery assembly, reducing the weight and material cost of the battery assembly, increasing production line cycle time, improving the overall modal strength of the battery pack, and enhancing the practicality of the battery assembly.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and in particular to a battery component, a battery pack, and an electrical device. Background Technology

[0002] In related technologies, the packaging structure of pouch cells typically involves inserting the pouch cells into a housing and adhesively bonding them to the housing to form a module. This module is then fixed in a tray. This arrangement reduces the difficulty of securing the pouch cells in the battery pack and improves the structural strength of the battery pack. However, assembling the cells into modules requires numerous structural components, increasing material costs and processing difficulty, thus leaving room for improvement. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a battery assembly that eliminates the internal injection molding process, thereby reducing the weight and material costs of the battery assembly, increasing production line cycle time, and improving the overall modal strength of the battery pack.

[0004] A battery assembly according to an embodiment of the present invention includes: a cell assembly comprising a plurality of cells arranged along a first direction; a housing, wherein the cell assembly is installed within the housing, and at least one side wall of the housing in a second direction is provided with an adhesive opening extending along a third direction, the adhesive opening being used to expose a portion of at least one cell in the cell assembly, and a fixing adhesive layer being provided at the adhesive opening for fixing the exposed cell to the housing of the battery pack, wherein the first direction and the second direction intersect, and the third direction intersects the first direction and the second direction respectively.

[0005] According to the battery assembly of this utility model embodiment, by providing adhesive openings on the side wall of the housing, the fixing adhesive layer can fix the battery cell through the adhesive openings, eliminating the need for internal glue injection in the battery assembly, which can reduce the weight and material cost of the battery assembly, increase the production cycle of the production line, and improve the overall modal strength of the battery pack, thereby improving the practicality of the battery assembly.

[0006] According to some embodiments of the present invention, in the battery assembly, the total area of ​​the sidewalls of the cell group corresponding to the adhesive opening is W0, and the area of ​​the portion of the sidewall of the cell group corresponding to the adhesive opening opposite to the adhesive opening is W1, satisfying: W1 / W0≥0.8.

[0007] According to some embodiments of the present invention, in a battery assembly, the adhesive opening is located at the middle of the sidewall of the cell assembly in the second direction.

[0008] The battery assembly according to some embodiments of the present invention further includes: a data acquisition line, which is disposed inside the housing and electrically connected to a plurality of the battery cells respectively.

[0009] According to some embodiments of the present invention, in the battery assembly, the data acquisition line is located on the side of the cell assembly corresponding to the adhesive opening, and the data acquisition line is provided with an avoidance hole to avoid the fixing adhesive layer corresponding to the adhesive opening.

[0010] According to some embodiments of the present invention, the battery assembly has multiple clearance holes, which are spaced apart along the length of the acquisition line.

[0011] According to some embodiments of the present invention, the battery assembly with the data acquisition circuit is a flexible structure.

[0012] The battery assembly according to some embodiments of the present invention further includes: a connecting fastener, the connecting fastener being disposed at both ends of the battery cell assembly along the third direction, the connecting fastener including a connector and a support member, the connector being used to electrically connect the battery cell to the acquisition line, and the support member being used to insulate the connector from the housing.

[0013] According to some embodiments of the present invention, the battery assembly includes multiple battery cell groups arranged sequentially along the third direction, and multiple adhesive openings corresponding one-to-one with each of the multiple battery cell groups.

[0014] According to some embodiments of the present invention, in a battery assembly, adjacent cells of the same cell group are bonded together.

[0015] According to some embodiments of the present invention, in the battery assembly, a heat insulation sheet is provided between adjacent cells of the same cell group.

[0016] According to some embodiments of the present invention, the battery cell in the battery assembly is a pouch cell.

[0017] This utility model also proposes a battery pack.

[0018] A battery pack according to an embodiment of the present invention includes: a battery assembly, wherein the battery assembly is the battery assembly described in any of the above embodiments; and a housing, wherein the battery assembly is mounted on the housing, and the housing is adhesively connected to the battery cell through the fixing adhesive layer.

[0019] According to the battery pack of the present invention, the battery components have low cost and high overall modal strength, good practicality, and are conducive to improving the overall performance of the battery pack.

[0020] According to some embodiments of the present invention, the battery pack includes a housing comprising a tray and a sealing cover. The tray has a mounting cavity for accommodating the battery assembly. The sealing cover is disposed on the tray to seal the mounting cavity. The battery cell is adhesively bonded to at least one of the tray and the sealing cover.

[0021] According to some embodiments of the present invention, the battery pack has a heat exchange component on the side of the tray corresponding to the adhesive opening; and / or, the sealing cover has a heat exchange component on the side corresponding to the adhesive opening.

[0022] This utility model also proposes an electrical device.

[0023] The electrical equipment according to the embodiments of the present invention includes: a battery assembly according to any of the above embodiments; or a battery pack according to any of the above embodiments.

[0024] According to the embodiments of the present invention, the battery components of the electrical equipment have low cost and high overall modal strength, good practicality, and are conducive to improving the overall performance of the battery pack, thereby enhancing the product competitiveness of the electrical equipment.

[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0027] Figure 1 This is a schematic diagram of a battery pack according to an embodiment of the present utility model;

[0028] Figure 2 This is an exploded view of a battery pack according to an embodiment of the present utility model;

[0029] Figure 3 This is a schematic diagram of a battery assembly according to an embodiment of the present utility model;

[0030] Figure 4 This is a schematic diagram of a battery assembly according to an embodiment of the present utility model from another perspective;

[0031] Figure 5 This is an exploded view of a battery assembly according to an embodiment of the present invention.

[0032] Figure label:

[0033] Battery pack 100; First direction F1; Second direction F2; Third direction F3;

[0034] Battery assembly 1; Cell pack 11; Cell 111; Heat insulation sheet 112;

[0035] 12 housing; 121 adhesive opening;

[0036] Data acquisition line 13; clearance hole 131; connecting fastener 14;

[0037] 2. Box body; 21. Tray; 211. Mounting cavity; 22. Sealing cover; 3. Fixing adhesive layer. Detailed Implementation

[0038] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0039] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0041] Hereinafter, with reference to the accompanying drawings, a battery assembly 1 according to an embodiment of the present invention will be described.

[0042] like Figures 1-5As shown, the battery assembly 1 according to an embodiment of the present invention includes: a cell group 11 and a housing 12. The cell group 11 includes a plurality of cells 111 arranged along a first direction F1. The cell group 11 is installed in the housing 12. At least one side wall of the housing 12 in the second direction F2 is provided with an adhesive opening 121 extending along a third direction F3. The adhesive opening 121 is used to expose a portion of at least one cell 111 in the cell group 11. A fixing adhesive layer 3 is provided at the adhesive opening 121. The fixing adhesive layer 3 is used to fix the exposed cell 111 to the housing 2 of the battery pack 100. The first direction F1 and the second direction F2 intersect each other, and the third direction F3 intersects the first direction F1 and the second direction F2 respectively.

[0043] This reduces the weight and material cost of battery module 1, increases production cycle time, improves the overall modal strength of battery pack 100, and enhances the practicality of battery module 1.

[0044] First, such as Figures 1-5 As shown, the battery pack 100 includes a battery assembly 1 and a housing 2. The housing 2 has a mounting cavity 211, and the battery assembly 1 is installed within the mounting cavity 211 of the housing 2. The battery assembly 1 includes a cell group 11 and a housing 12, which can be a plastic housing or a metal housing. The cell group 11 includes multiple cells 111, which are arranged along a first direction F1 and connected in series and parallel to form a group. The housing 12 has a receiving cavity into which the cell group 11 can be installed. The housing 12 is used to constrain the cell group 11 to enhance its structural stability.

[0045] The housing 12 has an adhesive opening 121 on at least one side wall in the second direction F2. The length direction of the battery cell 111 extends along the third direction F3. The adhesive opening 121 extends along the third direction F3. The adhesive opening 121 is used to expose a portion of at least one battery cell 111 in the battery cell group 11. A fixing adhesive layer 3 is provided at the adhesive opening 121. The fixing adhesive layer 3 is used to fix the exposed side wall of the battery cell 111 in the second direction F2 to the corresponding side wall of the housing 2 in the second direction F2.

[0046] For example, an adhesive opening 121 may be provided to expose a portion of one of the cells 111 in the cell assembly 11; or, an adhesive opening 121 may be provided to expose a portion of multiple cells 111 in the cell assembly 11. This utility model does not limit this.

[0047] It should be noted that the first direction F1 intersects with the second direction F2, and the third direction F3 intersects with both the first direction F1 and the second direction F2. For example, the first direction F1 can be set as... Figure 2 The left and right directions are shown, and the second direction F2 is set as... Figure 2The vertical direction is shown, and the third direction F3 is set as... Figure 2 The front and back directions are shown.

[0048] Specifically, the housing 12 can be provided with an adhesive opening 121 on one side wall in the second direction F2, so that the housing 2 can be fixedly connected to the battery cell 111 on one side wall in the second direction F2 through the fixing adhesive layer 3; or, the housing 12 can be provided with adhesive openings 121 on both sides wall in the second direction F2, so that the housing 2 can be fixedly connected to the battery cell 111 on both sides wall in the second direction F2 through the fixing adhesive layer 3.

[0049] With the above settings, there is no need for an adhesive layer between the cell 111 and the casing 12, eliminating the need for glue injection inside the battery assembly 1, reducing the weight and material cost of the battery assembly 1, simplifying the processing steps, increasing the production cycle of the production line, and facilitating the reduction of the size of the battery assembly 1, increasing the specific energy density of the battery assembly 1. Furthermore, since the cell 111 accounts for the largest proportion of the weight in the battery assembly 1, directly fixing the cell 111 can improve the overall modal strength of the battery pack 100.

[0050] In addition, since the length of the battery cell 111 extends along the third direction F3, by setting the adhesive opening 121 to extend along the third direction F3, the adhesive area between the fixing adhesive layer 3 and each battery cell 111 can be increased, which is beneficial to ensure the connection stability between the housing 2 and the battery cell 111.

[0051] According to the embodiment of the present utility model, the battery assembly 1 has an adhesive opening 121 on the side wall of the housing 12, which allows the fixing adhesive layer 3 to fix the battery cell 111 through the adhesive opening 121. This eliminates the need for internal glue injection in the battery assembly 1, which can reduce the weight and material cost of the battery assembly 1, increase the production cycle of the production line, and improve the overall modal strength of the battery pack 100, thereby improving the practicality of the battery assembly 1.

[0052] In some embodiments of this invention, each cell 111 in the cell assembly 11 may be partially exposed, so that the fixing adhesive layer 3 is used to fix the sidewall of each cell 111 in the second direction F2 to the corresponding sidewall of the housing 2 in the second direction F2. This improves the overall performance of the battery assembly 1.

[0053] In some embodiments of this utility model, the total area of ​​the sidewalls of the battery cell assembly 11 corresponding to the adhesive opening 121 can be set to W0, and the area of ​​the portion of the sidewall of the battery cell assembly 11 corresponding to the adhesive opening 121 opposite to the adhesive opening 121 can be set to W1, satisfying: W1 / W0≥0.8. It should be emphasized that "opposite" here means: directly opposite without obstruction along the second direction F2.

[0054] In other words, the area W1 of the portion of the sidewall of the battery cell assembly 11 opposite to the adhesive opening 121 can be set to be greater than or equal to 0.8 times the total area W0 of the sidewall of the battery cell assembly 11 corresponding to the adhesive opening 121, such as 0.8W0, 0.85W0, 0.9W0, 0.95W0, 1W0, etc. This allows for sufficient exposure of the sidewall of the battery cell assembly 11, ensuring adequate adhesive area between the fixing adhesive layer 3 and the battery cell assembly 11, and improving the installation stability of the battery cell 111.

[0055] Furthermore, the area W1 of the portion of the sidewall of the cell assembly 11 opposite to the adhesive opening 121 can be limited to be less than or equal to the sum of the areas W0 of the sidewalls of the cell assembly 11 in the second direction F2. This prevents the cell assembly 11 from detaching from or partially detaching from the casing 12, thus improving the structural stability of the battery assembly 1.

[0056] In some embodiments of this utility model, such as Figures 3-5 As shown, the adhesive opening 121 can be located in the middle of the side wall of the cell assembly 11 in the second direction F2, that is, the adhesive opening 121 is located in the middle of the cell assembly 11 along the first direction F1 and the third direction F3. This allows the housing 2 to be fixed to the middle of the side wall of the cell assembly 11 in the second direction F2, which helps improve the connection stability between the housing 2 and the cell assembly 11 and improves the reliability of the battery assembly 1.

[0057] In some embodiments of this utility model, such as Figures 3-5 As shown, the battery assembly 1 of this embodiment further includes: a data acquisition line 13, which is disposed inside the housing 12, extends along a third direction F3, and has its output end led out to the outside of the housing 12. The data acquisition line 13 is electrically connected to multiple battery cells 111, and is used to acquire data from the battery cells 111, such as temperature and voltage. The output end of the data acquisition line 13 is connected to the battery management unit, so that the data acquisition line 13 can transmit the data from the battery cells 111 to the battery management unit. Therefore, the battery assembly 1 can be monitored in real time, improving the safety of the battery assembly 1.

[0058] In some embodiments of this utility model, such as Figures 3-5 As shown, the acquisition line 13 can be set to be located on one side of the adhesive opening 121 corresponding to the cell assembly 11, and the acquisition line 13 is provided with an avoidance hole 131 corresponding to the adhesive opening 121. The avoidance hole 131 is used to avoid the fixing adhesive layer 3 so that the fixing adhesive layer 3 can pass through the avoidance hole 131 and be adhesively connected to the cell assembly 11.

[0059] It is understandable that by placing the acquisition line 13 on one side of the cell assembly 11 corresponding to the adhesive opening 121, the acquisition line 13 can be fixed to the cell assembly 11 by fixing the adhesive layer 3, which improves the installation stability of the acquisition line 13. Furthermore, by providing the clearance hole 131 on the acquisition line 13, the obstruction of the acquisition line 13 to the cell assembly 11 can be reduced, which is conducive to improving the connection stability between the cell assembly 11 and the housing 2.

[0060] In some embodiments of this utility model, such as Figures 3-5 As shown, multiple clearance holes 131 can be provided, with the multiple clearance holes 131 extending along the length of the acquisition line 13 (see reference). Figure 3 The third-direction F3) is arranged at intervals. This reduces the size of a single clearance hole 131, which helps improve the structural stability of the acquisition line 13.

[0061] In some embodiments of this invention, the data acquisition line 13 can be configured as a flexible structure. This allows the data acquisition line 13 to be easily connected to the battery management unit, reducing layout complexity and improving the practicality of the battery assembly 1.

[0062] In some embodiments of the present invention, the battery assembly 1 of the present invention further includes: a connecting fastener 14, the connecting fastener 14 being disposed at both ends of the cell assembly 11 along the third direction F3, the connecting fastener 14 including a connector and a support, the connector being used to electrically connect the cell 111 to the acquisition line 13, and the support being used to insulate and separate the connector from the housing 12.

[0063] For example, such as Figures 3-5 As shown, the battery assembly 1 also includes connecting fasteners 14, which are located at both ends of the cell assembly 11 along the third direction F3. The connecting fasteners 14 include connectors and support members. The connectors can be configured as connecting aluminum busbars, which are welded to the tabs of adjacent cells 111 to achieve series and parallel connection of multiple cells 111. The connecting aluminum busbars can also be electrically connected to the acquisition line 13 so that the acquisition line 13 can acquire information from the cells 111.

[0064] Meanwhile, the support component can be made of insulating materials such as plastic or rubber. The support component is fixedly fitted with the connecting aluminum busbar and supported on the inner wall of the housing 12. The support component is used to insulate and separate the connector from the housing 12, thereby reducing the probability of short circuit in the cell 111. This can improve the reliability of the battery assembly 1.

[0065] In some embodiments of this utility model, such as Figures 3-5As shown, multiple battery cell groups 11 can be set up, and multiple battery cell groups 11 can be arranged sequentially along the third direction F3. Multiple adhesive openings 121 can also be set up, and multiple adhesive openings 121 can be arranged along the third direction F3 and correspond one-to-one with multiple battery cell groups 11.

[0066] With the above configuration, the housing 2 can be connected to the corresponding battery cell group 11 through multiple adhesive openings 121, which can reduce the size of a single adhesive opening 121 and improve the structural stability of the housing 12.

[0067] In some embodiments of this utility model, adjacent cells 111 of the same cell group 11 can be glued together, for example, by spraying adhesive. This increases the structural stability of the cell group 11, facilitates the installation of the cell group 11 into the housing 12, reduces the processing difficulty of the battery assembly 1, and improves the overall stability of the battery assembly 1.

[0068] In some embodiments of this utility model, such as Figure 5 As shown, a heat insulation sheet 112 can be provided between adjacent cells 111 in the same cell group 11. The heat insulation sheet 112 can be any of the insulating materials such as mica sheets or insulating films. This structure can enhance the electrical isolation between adjacent cells 111, prevent short circuits and arcing between adjacent cells 111, and help block the heat diffusion of cells 111. As a result, the thermal safety performance of the battery assembly 1 can be improved.

[0069] In some embodiments of this invention, the battery cell 111 can be a pouch cell. This eliminates the need for a separate cell casing, saving space within the housing 12 and increasing the energy density of the battery assembly 1.

[0070] This utility model also proposes a battery pack 100.

[0071] The battery pack 100 according to an embodiment of the present utility model includes: a battery assembly 1 and a housing 2. The battery assembly 1 is the battery assembly 1 of any of the above embodiments. The battery assembly 1 is installed on the housing 2, and the housing 2 is glued to the battery cell 111 by a fixing adhesive layer 3.

[0072] Specifically, multiple battery components 1 can be set up, and the multiple battery components 1 can be stacked and arranged along the first direction F1. The housing 2 can be glued to the battery cells 111 in the multiple battery components 1 respectively.

[0073] According to the battery pack 100 of this utility model embodiment, the battery component 1 has a low cost and high overall modal strength, good practicality, and is conducive to improving the overall performance of the battery pack 100.

[0074] In some embodiments of the present invention, the housing 2 includes a tray 21 and a sealing cover 22. The tray 21 has a mounting cavity 211 for accommodating the battery assembly 1. The sealing cover 22 is placed on the tray 21 to seal the mounting cavity 211. The battery cell 111 is adhesively bonded to at least one of the tray 21 and the sealing cover 22.

[0075] For example, refer to Figures 1-4 As shown, the housing 2 includes a tray 21 and a sealing cover 22. The tray 21 has an upward-opening mounting cavity 211 for accommodating the battery assembly 1. The sealing cover 22 is adapted to cover the tray 21 to seal the open end of the mounting cavity 211. The second direction F2 is the vertical direction. At least one of the top and bottom walls of the housing 12 has an adhesive opening 121. The adhesive opening 121 on the top wall faces the sealing cover 22, and the adhesive opening 121 on the bottom wall faces the bottom wall of the tray 21, so that the battery cell 111 can be adhesively connected to at least one of the tray 21 and the sealing cover 22. This facilitates meeting different design requirements.

[0076] In one specific embodiment of this utility model, adhesive openings 121 can be provided on the top and bottom walls of the housing 12, respectively, so that the battery cell 111 can be adhesively connected to the sealing cover 22 and the tray 21 respectively. This improves the installation stability of the battery cell 111 and enhances the modal strength of the battery assembly 1.

[0077] In the specific installation process, firstly, glue is injected into the bottom wall of the mounting cavity 211 to form a fixing adhesive layer 3. Then, the battery assembly 1 is installed into the mounting cavity 211 so that the bottom wall of the housing 12 is glued to the tray 21 through the fixing adhesive layer 3. If the bottom wall of the housing 12 is provided with an adhesive opening 121, the fixing adhesive layer 3 can also glue the cell 111 and the tray 21 together. Next, glue can be injected into the top of the battery assembly 1 to form a fixing adhesive layer 3. Then, the sealing cover 22 is placed on the tray 21. The fixing adhesive layer 3 glues the housing 12 and the sealing cover 22 together. If the top wall of the housing 12 is provided with an adhesive opening 121, the fixing adhesive layer 3 can also glue the cell 111 and the sealing cover 22 together, thereby completing the assembly of the battery pack 100.

[0078] In some embodiments of this utility model, such as Figure 2 and Figure 4 As shown, the bottom wall of the housing 12 is provided with an adhesive opening 121, and the tray 21 is provided with a heat exchange component on one side corresponding to the adhesive opening 121. The heat exchange component can be any of the following components: a heat exchange cold plate, a heating film, etc. The fixing adhesive layer 3 is used to directly connect the heat exchange component to the bottom wall of the battery cell 111. It should be noted that the fixing adhesive layer 3 can be made of thermally conductive adhesive with high thermal conductivity.

[0079] In related technologies, the heat exchange path of the battery cell 111 typically includes an inner adhesive layer, the outer casing, and an outer adhesive layer, resulting in a relatively long heat exchange path. By using a fixing adhesive layer 3 to securely connect the battery cell 111 and the heat exchange component, the heat exchange path between the battery cell 111 and the heat exchange component is reduced to only the fixing adhesive layer 3, significantly shortening the heat exchange path and improving the thermal management efficiency of the battery pack 100.

[0080] In some embodiments of this utility model, such as Figures 2-3 As shown, the top wall of the housing 12 is provided with an adhesive opening 121, and the sealing cover 22 is provided with a heat exchange component on the side corresponding to the adhesive opening 121. The heat exchange component can be any of the following components: heat exchange cold plate, heating film, etc. The fixing adhesive layer 3 is used to directly connect the heat exchange component to the top wall of the battery cell 111. It should be noted that the fixing adhesive layer 3 can be made of thermally conductive adhesive with high thermal conductivity.

[0081] In related technologies, the heat exchange path of the battery cell 111 typically includes an inner adhesive layer, the outer casing, and an outer adhesive layer, resulting in a relatively long heat exchange path. By using a fixing adhesive layer 3 to securely connect the battery cell 111 and the heat exchange component, the heat exchange path between the battery cell 111 and the heat exchange component is reduced to only the fixing adhesive layer 3, significantly shortening the heat exchange path and improving the thermal management efficiency of the battery pack 100.

[0082] This utility model also proposes an electrical device.

[0083] The electrical device according to an embodiment of the present invention includes: a battery assembly 1 according to any of the above embodiments; or a battery pack 100 according to any of the above embodiments. It should be noted that the electrical device can be a new energy vehicle, a hybrid vehicle, etc.

[0084] According to the embodiments of the present invention, the battery component 1 of the electrical equipment has a low cost and high overall modal strength, good practicality, and is conducive to improving the overall performance of the battery pack 100 and enhancing the product competitiveness of the electrical equipment.

[0085] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0086] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery assembly (1), characterized in that, include: A battery cell assembly (11) comprising a plurality of battery cells (111) arranged along a first direction (F1); The housing (12) is in which the battery cell assembly (11) is installed. The housing (12) has at least one side wall in the second direction (F2) with an adhesive opening (121) extending in the third direction (F3). The adhesive opening (121) is used to expose a portion of at least one of the battery cells (111) in the battery cell assembly (11). A fixing adhesive layer (3) is provided at the adhesive opening (121). The fixing adhesive layer (3) is used to fix the exposed battery cell (111) to the housing (2) of the battery pack (100). The first direction (F1) and the second direction (F2) intersect each other. The third direction (F3) intersects the first direction (F1) and the second direction (F2) respectively.

2. The battery assembly (1) according to claim 1, characterized in that, The total area of ​​the sidewall of the battery cell assembly (11) corresponding to the adhesive opening (121) is W0, and the area of ​​the part of the sidewall of the battery cell assembly (11) corresponding to the adhesive opening (121) opposite to the adhesive opening (121) is W1, satisfying: W1 / W0≥0.

8.

3. The battery assembly (1) according to claim 1, characterized in that, The adhesive opening (121) is located in the middle of the sidewall of the battery cell assembly (11) in the second direction (F2).

4. The battery assembly (1) according to claim 1, characterized in that, Also includes: The acquisition line (13) is located inside the housing (12) and is electrically connected to a plurality of the battery cells (111).

5. The battery assembly (1) according to claim 4, characterized in that, The acquisition line (13) is located on the side of the battery cell assembly (11) corresponding to the adhesive opening (121), and the acquisition line (13) is provided with an avoidance hole (131) to avoid the fixing adhesive layer (3) corresponding to the adhesive opening (121).

6. The battery assembly (1) according to claim 5, characterized in that, There are multiple clearance holes (131), and the multiple clearance holes (131) are arranged at intervals along the length direction of the acquisition line (13).

7. The battery assembly (1) according to claim 4, characterized in that, The acquisition line (13) is a flexible structure.

8. The battery assembly (1) according to claim 4, characterized in that, Also includes: A connecting fastener (14) is provided at both ends of the battery cell assembly (11) along the third direction (F3). The connecting fastener (14) includes a connector and a support. The connector is used to electrically connect the battery cell (111) to the acquisition line (13), and the support is used to insulate the connector from the housing (12).

9. The battery assembly (1) according to claim 1, characterized in that, There are multiple battery cell groups (11), and the multiple battery cell groups (11) are arranged sequentially along the third direction (F3). There are multiple adhesive openings (121), and the multiple adhesive openings (121) correspond one-to-one with the multiple battery cell groups (11).

10. The battery assembly (1) according to claim 1, characterized in that, Adjacent cells (111) of the same cell group (11) are glued together.

11. The battery assembly (1) according to claim 1, characterized in that, A heat insulation sheet (112) is provided between adjacent cells (111) in the same cell group (11).

12. The battery assembly (1) according to claim 1, characterized in that, The battery cell (111) is a pouch cell.

13. A battery pack (100), characterized in that, include: Battery assembly (1), wherein the battery assembly (1) is the battery assembly (1) according to any one of claims 1-12; The housing (2) is on which the battery assembly (1) is installed, and the housing (2) is glued to the battery cell (111) by the fixing adhesive layer (3).

14. The battery pack (100) according to claim 13, characterized in that, The housing (2) includes a tray (21) and a sealing cover (22). The tray (21) has a mounting cavity (211) for accommodating the battery assembly (1). The sealing cover (22) covers the tray (21) to seal the mounting cavity (211). The battery cell (111) is adhesively connected to at least one of the tray (21) and the sealing cover (22).

15. The battery pack (100) according to claim 14, characterized in that, The tray (21) is provided with a heat exchanger on the side corresponding to the adhesive opening (121); and / or, the sealing cover (22) is provided with a heat exchanger on the side corresponding to the adhesive opening (121).

16. An electrical appliance, characterized in that, include: The battery assembly (1) according to any one of claims 1-12; or the battery pack (100) according to any one of claims 13-15.

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