Battery cell assembly structure, battery and electromechanical equipment

Abstract

The utility model discloses a battery cell assembly structure, a battery and electromechanical equipment. The battery cell assembly structure comprises a shell, a battery cell and a battery cell, wherein the shell is provided with an accommodating cavity; the first insulation isolation component is used for being arranged between at least two adjacent battery monomers in a battery module, and the battery module comprises a plurality of stacked battery monomers and is detachably mounted in the accommodating cavity; and the first force application component is used for being arranged in the accommodating cavity, and is propped against the inner wall of the accommodating cavity and at least one side of the battery module or the first insulating isolation component positioned on the side, so that pre-tightening force is applied to the battery module, and the battery module is mounted in place in the accommodating cavity. The battery cell assembly can provide proper pre-tightening force for a battery module, and is beneficial to improving the electrical performance and the cycle life of the battery and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, and more particularly, to a battery cell assembly structure, a battery, and an electromechanical device. BACKGROUND

[0002] As a core part of a battery, a battery cell constitutes a basic element of a battery pack, a battery pack, etc. In the design of a battery pack, a battery cell assembly structure is often involved, which affects the working performance, safety reliability, and production efficiency of the battery, etc. Figure 1 As shown in the figure, an existing battery cell assembly structure is shown. In the assembly, a plurality of battery sheets 1 are arranged in corresponding grooves on the base 3, and then the bottom of the battery sheets 1 is generally fixed and reinforced with glue to ensure that the battery sheets 1 are fixed in place in the grooves, to prevent mutual movement between the battery sheets, and to reduce displacement or structural damage due to vibration or impact, etc. In addition, a top cover 2 can be installed at the top of the battery sheets 1 to further fix them, etc. CONTENT OF THE INVENTION

[0003] Therefore, the present application provides a battery cell assembly structure, a battery, and an electromechanical device, so as to solve or at least alleviate one or more of the problems in the prior art and other aspects, or to provide an alternative technical solution for the prior art.

[0004] According to one aspect of the present application, a battery cell assembly structure is first provided, comprising:

[0005] a housing having a receiving cavity;

[0006] a first insulating and isolating component for being arranged between at least two adjacent battery monomers in a battery module, the battery module comprising a plurality of stacked battery monomers and being removably installed into the receiving cavity; and

[0007] a first force applying component for being arranged in the receiving cavity and forming a pressing arrangement with the inner wall of the receiving cavity and the first insulating and isolating component of at least one side of the battery module or located at the side, to apply a pre-tightening force to the battery module so that the battery module is installed in place in the receiving cavity.

[0008] In the battery cell assembly structure according to the present application, optionally, the battery cell assembly structure further comprises:

[0009] a second force applying component for forming a pressing arrangement between the inner wall of the receiving cavity and the first force applying component, to apply the pre-tightening force to the battery module through the first force applying component; and / or

[0010] a second insulating spacer member for being arranged between at least one end of the battery module and an inner wall of the accommodating cavity.

[0011] In the electric cell assembly structure according to the present application, optionally, the second force applying member is provided in multiple groups, wherein each group of the second force applying member, after being installed in place, applies a pre-tightening force to the battery module through the first force applying member, the pre-tightening force being of a different size compared to the pre-tightening force applied by other groups of the second force applying member.

[0012] In the electric cell assembly structure according to the present application, optionally, the second force applying member is configured as a wedge, and the inner wall of the accommodating cavity is provided with a recess, the wedge being at least partially accommodated in the recess after being installed in place.

[0013] In the electric cell assembly structure according to the present application, optionally, the recess is provided with at least two recesses, which are arranged spaced apart along the length direction of the battery module.

[0014] In the electric cell assembly structure according to the present application, optionally, the second insulating spacer member is provided with an extension configured for isolating the bottom of the battery module and the bottom of the accommodating cavity.

[0015] In the electric cell assembly structure according to the present application, optionally, the first force applying member comprises a first side force applying member and a second side force applying member, the first side force applying member being pressed against a first side of the battery module or the first insulating spacer member located at the first side, and the second side force applying member being pressed against a second side of the battery module or the first insulating spacer member located at the second side; and / or the battery cell is a rechargeable battery cell.

[0016] In the electric cell assembly structure according to the present application, optionally, the first side force applying member is configured as a spring plate, and / or the second side force applying member is configured as a spring plate.

[0017] Further, according to another aspect of the present application, there is also provided a battery comprising:

[0018] the electric cell assembly structure according to any one of the above; and

[0019] a battery module comprising a plurality of stacked battery cells, the battery module being removably installed into an accommodating cavity of a housing of the electric cell assembly structure, wherein the first insulating spacer member is arranged between at least two adjacent battery cells, and the first force applying member is arranged pressed between an inner wall of the accommodating cavity and at least one side of the battery module or the first insulating spacer member located at the side.

[0020] In addition, according to another aspect of the present application, there is further provided an electromechanical device configured with the battery as described above.

[0021] The battery cell assembly structure of the present application is easy to manufacture and install, can maintain appropriate pre-tightening force between the battery monomers of the battery module, effectively control the expansion of the battery monomers, and does not need to use glue when fixing the battery monomers, so that the battery monomers can be very conveniently, efficiently and reliably assembled into a battery, and the electrical performance and cycle life of the battery are improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic diagram of a perspective structure of an existing battery cell assembly structure.

[0023] Figure 2 is a schematic diagram of a perspective exploded structure of a battery embodiment of the present application.

[0024] Figure 3 is Figure 1 is a schematic diagram of a perspective structure of the battery embodiment shown in

[0025] Figure 4 , Figure 5 and Figure 6 are respectively Figure 1 are respectively a top view, a bottom view and a front view of the battery embodiment shown in DETAILED DESCRIPTION

[0026] It should be noted that the structure, configuration, features and advantages of the battery cell assembly structure, the battery and the electromechanical device according to the present application will be described below by way of example, however, all the descriptions should not be used to limit the present application. In this text, the technical terms "first" and "second" are only used for distinguishing purposes and are not intended to represent their order and relative importance. For the purpose of simplifying the drawings, the same or similar parts and features can be marked only at one or several places in the same drawing.

[0027] The present application is optimally designed to provide an improved battery cell assembly structure, which can be applied to battery assembly. As an example, a battery embodiment is specifically shown in Figures 2 to 6 , in which a battery cell assembly structure example according to the present application is configured to be used, which is marked with reference numeral 100 in the drawings.

[0028] In particular, with reference to Figure 2The battery cell assembly structure 100 can be used to assemble the battery cells 10 in a battery 200, and after the assembly is completed, the battery module composed of the battery cells 10 can be stably and reliably fixed in the intended position. In this context, the battery cell refers to various types of battery cells, such as battery cells that have been packaged with a housing, a protection circuit, etc., which can be rechargeable lithium ion battery cells, nickel-cadmium battery cells, or nickel-hydrogen battery cells, or non-rechargeable battery cells, etc. The battery cell can be constructed, for example, in a sheet shape, etc., and is allowed to be stacked in order to improve the space utilization and the energy density, etc.

[0029] The battery cell assembly structure 100 can include a housing 11, a first insulating spacer 12, a first force applying member 13, a second force applying member 14, and a second insulating spacer 15. The housing 11 can be made of one or more materials, such as plastic, metal, etc., as needed, and can be constructed in any suitable structural shape as needed for the application, such as a substantially cuboid structure as exemplarily shown in Figure 3 The housing 11 is provided with a receiving cavity 111 for receiving components such as the battery cells 10, the first insulating spacer 12, the first force applying member 13, etc. In addition, one or more assembly portions 113 and 114, such as mounting holes, lugs, etc., can be optionally provided on the housing 11 for mounting or fixing, etc., such as shown in Figure 5 A plurality of assembly portions 113 extending from the bottom 115 of the housing 11 are shown in

[0030] The first insulating spacer 12 can be made of any one or more suitable insulating materials, such as plastic, rubber, etc., and can be optionally arranged between any two adjacent battery cells 10 in the battery module as needed for the application. For example, the first insulating spacer 12 is exemplarily shown in Figure 2 and Figure 3 arranged between all adjacent battery cells 10, which can be vertically stacked to form a battery module, and are removably mounted into the receiving cavity 111 of the housing 11. It should be noted that in some application scenarios, such as in the case of facing limited receiving space, the present application allows the first insulating spacer 12 to be arranged on one side or both sides of one or more battery cells 10.

[0031] Similarly, the second insulating isolation component 15 can be made of any one or more suitable insulating materials, such as plastic or rubber, and can be configured into any suitable shape. Depending on the application requirements, one, two, or more second insulating isolation components 15 can be optionally arranged to achieve insulation between the end of the battery module and the inner wall of the receiving cavity 111, thereby enhancing electrical safety performance. For example, see reference... Figure 2 As shown, the second insulating isolation member 15 can be configured to have an extension 151, which is used to insulate the bottom of the battery module from the bottom of the receiving cavity 111. This application does not impose any restrictions on the specific configuration of such an extension. Of course, in one or more embodiments, the second insulating isolation member 15 may be omitted, for example, when the material used in the housing 11 can provide sufficient insulation performance.

[0032] In the given embodiments, for example, refer to Figure 3 As shown, after assembly is completed, a pre-tightening force can be applied to the battery module formed by assembling the battery cells 10 through the first force-applying component 13 and the second force-applying component 14, so that the battery module and each battery cell can be installed in the receiving cavity 111 of the housing 11, effectively avoiding or reducing problems such as positional movement or structural damage, battery cell expansion, etc., and is conducive to improving the electrical performance and cycle life of the battery.

[0033] The first force-applying component 13 can be implemented using any suitable material and structural form to provide the aforementioned preload force to the battery module and its individual cells. For example... Figure 2 As exemplified, a first-side force-applying component 131 and a second-side force-applying component 132 can be arranged on both sides of the battery module, respectively. They can adopt the same or different configurations, such as both being constructed as spring plate structures. The first-side force-applying component 131 can be arranged on... Figure 2 The battery module's left side (which can directly press against the first insulating isolation member 12 arranged on the left side) and the second force-applying member 14 form a pressing contact, thereby applying a force from the left side toward the battery module. The second force-applying member 132 is pressed between the battery module's right side (which can directly press against the first insulating isolation member 12 arranged on the right side) and the inner wall of the receiving cavity 111, thereby applying a force from the right side toward the battery module. This arrangement creates a pre-tightening force on the battery module, ensuring its proper installation within the receiving cavity 111. This eliminates the need for glue and maintains a suitable pre-tightening force between the battery cells, effectively controlling issues such as expansion.

[0034] likeFigure 2 and Figure 3 As shown in FIG. 10, in the battery cell assembly structure 100, the second force applying members 14 are optionally configured in two and arranged in a wedge structure, which are respectively installed into two recesses 112 on the inner wall of the accommodating cavity 111, which are arranged at intervals along the length direction of the battery module, and the specific interval distance and the structure size of the recesses can be designed as needed. After the above two second force applying members 14 are installed in place in the respective corresponding recesses 112, they can form abutting contact with the first side force applying member 131 from different positions, and then the first side force applying member 131 is directly abutted to the battery module or abutted to the battery module via the first insulating isolation member 12, so as to provide the battery module with the pre-tightening force as described above.

[0035] The use of the second force applying members 14 can provide better flexibility, practicality and assembly operability for the battery cell assembly structure. On the one hand, a plurality of groups of second force applying members can be configured as needed, which can have different structure configurations, such as size, material selection, structure form, etc., so that the user can select the appropriate second force applying member from the series of second force applying members, so as to provide the battery module with a suitable pre-tightening force of different size and more in line with the application needs by the selected second force applying member, so as to effectively control the size of the internal pre-tightening force, ensure the fixation of the battery module and the battery cell, and achieve the best electrical performance; on the other hand, by providing the second force applying members, for example, in a wedge structure, etc., the rapid and efficient assembly operation of the battery cell can also be facilitated, the assembly efficiency is improved, and the disassembly during replacement or maintenance operation is also facilitated.

[0036] It should be noted that in actual application, the specific structure of the second force applying member, the number of configurations, the arrangement position, and the matching structure of the shell and the second force applying member, etc. can be designed, modified and adjusted as needed. For example, the second force applying members can be configured on both left and right sides of the battery module; for example, only one second force applying member can be configured on the left side or the right side of the battery module, or three or more second force applying members can be configured at the same time; for example, in some cases, the second force applying member is not necessarily provided, so as to simplify the structure and save cost, etc.; or the second force applying member can be provided with structures such as spring sheets, etc., so as to better abut with other components or parts.

[0037] The scheme of the present application can be combined with, for example, Figure 1The technical advantages of the battery cell assembly structure and the battery can be more clearly understood by comparing with the prior products. First, since the pre-tightening force is not generally provided on the battery cells in the prior products, especially the pre-tightening force is not provided at the middle surface position of the battery cells, the swelling of the battery cells during use can not be controlled, which will affect the performance and safety reliability of the battery module. As discussed above, the application can provide appropriate pre-tightening force for the battery module, which can successfully solve the above technical problems.

[0038] In addition, since the battery cells are generally fixed by using glue in the prior products, some glues may contain harmful chemicals and are not environmentally friendly, which brings environmental problems. Once the glue is solidified, it will be difficult to disassemble and replace the battery cells, and even the battery cells or the groove structure for fixing may be damaged. Furthermore, the performance of the glue may be affected by temperature changes, and if extreme high or low temperature conditions are encountered during use, the glue may fail, which may pose a safety risk to the use of the battery. In addition, in the prior mounting structure shown, the independent groove design may occupy more space, which will affect and reduce the overall energy density of the battery module, and increase the complexity and cost of manufacturing and installation. As discussed above, the application can no longer use glue for fixing, and the independent groove structure for fixing the battery cells can be eliminated, and the battery cell assembly structure of the application can provide stable and reliable and appropriate pre-tightening force for fixing the battery module and its battery cells in place, which can prevent the battery cells from moving or being damaged, and improve the electrical performance and cycle life of the battery. Figure 1 The technical advantages of the battery cell assembly structure and the battery can be more clearly understood by comparing with the prior products. First, since the pre-tightening force is not generally provided on the battery cells in the prior products, especially the pre-tightening force is not provided at the middle surface position of the battery cells, the swelling of the battery cells during use can not be controlled, which will affect the performance and safety reliability of the battery module. As discussed above, the application can provide appropriate pre-tightening force for the battery module, which can successfully solve the above technical problems.

[0039] The battery cell assembly structure, the battery and the electromechanical device according to the application can be designed, manufactured and sold separately, and can be widely applied to many types of electromechanical devices, such as various electromechanical devices used in industrial production, scientific research or daily life, such as robots, unmanned aerial vehicles, medical devices, pure electric vehicles, hybrid vehicles, etc.

[0040] The above only illustrates the battery cell assembly structure, the battery and the electromechanical device according to the application by way of example, and these examples are only used to illustrate the principles and embodiments of the application, and do not limit the application. Those skilled in the art can make various modifications and improvements without departing from the scope of the application. Therefore, all equivalent technical solutions shall fall within the scope of the application and be limited by the claims of the application.

Claims

1. An electric cell assembly structure (100), characterized by, Comprising: a housing (11) having a receiving cavity (111); a first insulating spacer member (12) for being arranged between at least two adjacent battery cells (10) in a battery module, the battery module comprising a plurality of stacked battery cells (10) and being removably installed into the receiving cavity (111); and a first force applying member (13) for being arranged in the receiving cavity (111) and forming a pressing arrangement between an inner wall of the receiving cavity (111) and at least one side of the battery module or the first insulating spacer member (12) located at the side, to apply a pre-tightening force to the battery module so that the battery module is installed in place in the receiving cavity (111).

2. The electric cell assembly structure (100) according to claim 1, wherein The battery cell assembly structure (100) further comprises: a second force applying member (14) for forming a pressing arrangement between the inner wall of the receiving cavity (111) and the first force applying member (13), to apply the pre-tightening force to the battery module through the first force applying member (13); and / or a second insulating spacer member (15) for being arranged between at least one end of the battery module and the inner wall of the receiving cavity (111).

3. The electric cell assembly structure (100) according to claim 2, wherein The second force applying member (14) is provided in multiple groups, wherein each group of the second force applying member (14) applies a pre-tightening force of different size to the battery module through the first force applying member (13) after being installed in place, compared to other groups of the second force applying member (14).

4. The electric chip assembly structure (100) according to claim 2, wherein The second force applying member (14) is configured as a wedge, and the inner wall of the receiving cavity (111) is provided with a recess (112), the wedge being at least partially accommodated in the recess (112) after being installed in place.

5. The electric cell assembly structure (100) according to claim 4, wherein The recess (112) is provided with at least two, which are arranged spaced apart along the length direction of the battery module.

6. The electric chip assembly structure (100) according to claim 2, wherein The second insulating spacer member (15) has an extension (151) configured for insulating the bottom of the battery module and the bottom of the receiving cavity (111).

7. The electric cell assembly structure (100) according to any one of claims 1 to 6, wherein The first force applying member (13) comprises a first side force applying member (131) and a second side force applying member (132), the first side force applying member (131) pressing against the first side of the battery module or the first insulating spacer member (12) located at the first side, and the second side force applying member (132) pressing against the second side of the battery module or the first insulating spacer member (12) located at the second side; and / or, the battery cell (10) is a chargeable battery cell.

8. The electric cell assembly structure (100) according to claim 7, wherein The first side force applying member (131) is configured as a spring plate, and / or the second side force applying member (132) is configured as a spring plate.

9. A battery (200) characterized by, Comprising: the battery cell assembly structure (100) according to any one of claims 1-8; and A battery module including a plurality of stacked battery cells (10) is removably installed into a receiving cavity (111) of a housing (11) of the battery cell assembly structure (100), wherein the first insulating spacer member (12) is arranged between at least two adjacent battery cells (10), and the first force applying member (13) is arranged in abutment between an inner wall of the receiving cavity (111) and at least one side of the battery module or the first insulating spacer member (12) located at the side.

10. An electromechanical device, characterized by The electromechanical device is configured with the battery (200) as claimed in claim 9.

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