Battery module

Abstract

The utility model relates to the technical field of batteries, in particular to a battery module. The battery module comprises a shell, a first patch and a plurality of battery cells, a first side face is arranged in the thickness direction of the shell, the first patch is arranged on the first side face and covers the first side face, the plurality of battery cells are arranged in the shell, and every two adjacent battery cells are electrically connected through an electric connecting piece. According to the battery pack, the shell, the first patch and the multiple battery cells are arranged, the multiple battery cells are arranged in the shell, every two adjacent battery cells are electrically connected through the corresponding electric connecting piece, the first side face is arranged in the thickness direction of the shell, and the first patch is arranged on the first side face and covers the first side face; an operator can select the first patches with different thicknesses according to the thickness of a shell for packaging a plurality of battery cells and install the first patches on the first side surface in the thickness direction of the shell, so that the overall thickness of the battery module can meet the requirement of a uniform thickness specification.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery module. Background Art

[0002] A battery module usually includes a plurality of series-connected or parallel-connected battery cells to meet the usage scenarios with higher output voltage or higher output current.

[0003] In the related art, a battery module usually includes a lower case, an upper cover and a battery cell holder. A plurality of battery cells are installed on the battery cell holder. The upper cover is welded to the holder. The upper cover and the lower case are ultrasonically welded to form a sealed space inside after welding. The battery cell holder together with the battery cells is encapsulated in this sealed space.

[0004] Due to the influence of objective factors during the production process of the above battery module, the overall thickness dimension is inconsistent and cannot meet the requirement of a unified thickness specification. Summary of the Utility Model

[0005] The technical problem to be solved by the embodiments of the utility model is to provide a battery module to solve the problem that the battery module in the prior art cannot meet the requirement of a unified thickness specification.

[0006] The utility model discloses a battery module, which includes a housing, a first patch and a plurality of battery cells. A first side surface is arranged in the thickness direction of the housing. The first patch is installed on the first side surface and covers the first side surface. A plurality of the battery cells are arranged inside the housing, and adjacent two of the battery cells are electrically connected through an electrical connector.

[0007] Optionally, a first limiting protrusion is arranged around the edge of the first side surface. The first limiting protrusion and the first side surface form a first limiting groove, and the first patch is adaptively received in the first limiting groove.

[0008] Optionally, a first glue layer is arranged on the side of the first patch facing the first side surface. The first patch is installed on the first side surface through the first glue layer.

[0009] Optionally, the material of the first patch is one of PET material, PP material, PC material and PVC material.

[0010] Optionally, a second side surface opposite to the first side surface is further arranged in the thickness direction of the housing. The battery module further includes a second patch. The second patch is installed on the second side surface and covers the second side surface.

[0011] Optionally, a second limiting protrusion is provided along the edge of the second side surface, and the second limiting protrusion and the second side surface form a second limiting groove, and the second patch is adaptively received in the second limiting groove.

[0012] Optionally, a second adhesive layer is provided on the side of the second patch facing the second side surface, and the second patch is mounted on the second side surface through the second adhesive layer.

[0013] Optionally, the material of the second patch is one of PET material, PP material, PC material and PVC material.

[0014] Optionally, the battery module further includes a positive electrode connector and a negative electrode connector. The positive electrode connector is electrically connected to one of the battery cells, and the negative electrode connector is electrically connected to the other battery cell. The battery module further includes an upper cover detachably connected to the housing, and the positive electrode connector and the negative electrode connector are both provided on the upper cover.

[0015] Optionally, one of the upper cover and the housing is provided with a buckle, and the other is provided with a clamping groove, and the buckle is clamped in the clamping groove.

[0016] Compared with the prior art, the beneficial effects of the battery module provided by the embodiment of the present invention are as follows: by providing a housing, a first patch and a plurality of battery cells, the plurality of battery cells are arranged in the housing, and adjacent two battery cells are electrically connected through an electrical connector. A first side surface is provided in the thickness direction of the housing, and the first patch is mounted on the first side surface and covers the first side surface. An operator can select first patches with different thicknesses according to the thickness of the housing for packaging the plurality of battery cells and mount them on the first side surface in the thickness direction of the housing, so that the overall thickness of the battery module can meet the requirements of a unified thickness specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The technical solutions of the present invention will be further described in detail below with reference to the drawings and embodiments. In the drawings:

[0018] Figure 1 is a three-dimensional schematic diagram of the battery module provided by the embodiment of the present invention;

[0019] Figure 2 is Figure 1 a three-dimensional schematic diagram of another angle of the battery module shown;

[0020] Figure 3 is Figure 1 an exploded schematic diagram of the battery module shown;

[0021] Figure 4 is a structural schematic diagram of a state where a plurality of battery cells provided by the embodiment of the present invention are arranged in the housing.

[0022] The reference numerals in the figures are as follows:

[0023] 110, housing; 110a, first side; 110b, second side; 111, first limiting projection; 112, second limiting projection; 113, card slot; 120, first patch; 130, battery cell; 140, electrical connection member; 150, second patch; 160, positive connection member; 170, negative connection member; 180, upper cover; 181, buckle. Detailed implementation manners

[0024] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments may be combined with each other. Now, with reference to the drawings, the preferred embodiments of the present utility model will be described in detail.

[0025] An embodiment of the present utility model provides a battery module, as Figures 1 to 4 shown, the battery module includes a housing 110, a first patch 120, and a plurality of battery cells 130. A first side 110a is provided in the thickness direction of the housing 110. The first patch 120 is installed on the first side 110a and covers the first side 110a. The plurality of battery cells 130 are disposed inside the housing 110, and adjacent battery cells 130 are electrically connected by an electrical connection member 140.

[0026] In the embodiment of the present utility model, by providing the housing 110, the first patch 120, and the plurality of battery cells 130, the plurality of battery cells 130 are disposed inside the housing 110, adjacent battery cells 130 are electrically connected by the electrical connection member 140, the first side 110a is provided in the thickness direction of the housing 110, the first patch 120 is installed on the first side 110a and covers the first side 110a. An operator can select a first patch 120 with a different thickness and install it on the first side 110a in the thickness direction of the housing 110 according to the thickness of the housing 110 for encapsulating the plurality of battery cells 130, so that the overall thickness of the battery module can meet the requirements of a unified thickness specification.

[0027] Among them, the unified thickness specification may be a standard thickness specification related to the battery module, or the thickness specification required for producing battery modules in the same batch.

[0028] The thickness direction of the housing 110 is Figure 1 the X direction shown in the figure.

[0029] The number of the battery cells 130 can be two, three or more than three. The multiple battery cells 130 can be connected in parallel or in series. In this embodiment, the multiple battery cells 130 are preferably connected in series, and the number of the battery cells 130 is seven. The battery module in the embodiment of the present application can specifically be a 9V battery module, which can be applied to the usage scenarios of household appliances, such as electrical measuring instruments, medical measuring instruments, geological mining, wireless intercom, wireless microphones, radios and other scenarios.

[0030] In this embodiment, the material of the first patch 120 is one of PET (Polyethylene terephthalate), PP (polypropylene), PC (Polycarbonate) and PVC (Polyvinyl Chloride). One of the PET material, PP material, PC material and PVC material can be used to make the first patch 120 with a certain hardness, which can allow a certain degree of collision. And these materials usually have good wear resistance and durability, which can effectively protect the outer shell 110, the internal battery cells 130 and other components from the influence of the external environment; have good chemical stability, can resist the erosion of chemical substances, and help to maintain the stability of the battery module; these materials are usually relatively light, which can reduce the overall weight and help to improve the portability and carrying comfort of the battery module; these materials are also easy to be processed into the required sizes, which is beneficial to the flexibility and efficiency of the production and manufacturing process.

[0031] Reference Figure 1 and Figure 3 , a first limiting protrusion 111 is arranged along the edge of the first side surface 110a, and the first limiting protrusion 111 and the first side surface 110a form a first limiting groove. The first patch 120 is adaptively received in the first limiting groove. Through the corresponding first limiting groove, the installation position of the first patch 120 can be limited, the first patch 120 can be limited, the displacement of the first patch 120 can be avoided, and the assembly alignment of the first patch 120 is convenient, so that the installation process is simpler and faster, and the production efficiency is improved.

[0032] In this embodiment, a first adhesive layer (not shown in the figure) is arranged on the side of the first patch 120 facing the first side surface 110a, and the first patch 120 is installed on the first side surface 110a through the first adhesive layer.

[0033] Through the first adhesive layer, the first patch 120 can be firmly bonded to the first side 110a of the housing 110, making the assembly more efficient and simple without complex assembly steps. After the patch is installed, the appearance of the battery module is flat, improving the user experience. Moreover, the method of mounting the first patch 120 on the first side 110a of the housing 110 through the first adhesive layer is more automated, reducing the degree of manual participation, lowering the intensity of manual labor, and improving the production efficiency of the battery module.

[0034] Reference Figures 2 to 4 , in this embodiment, a second side 110b opposite to the first side 110a is further provided in the thickness direction of the housing 110. The battery module further includes a second patch 150, which is mounted on the second side 110b and covers the second side 110b.

[0035] By providing the second patch 150, the operator can select the first patch 120 and the second patch 150 with different thicknesses according to the thickness of the housing 110 of the packaged battery cell 130 and mount them on the first side 110a and the second side 110b opposite to each other in the thickness direction of the housing 110, so that the overall thickness of the battery module can meet the requirements of a unified thickness specification. The combined symmetrical design of the first patch 120 and the second patch 150 can make the structural strength distribution of the battery module more uniform and the overall structure more stable.

[0036] Specifically, the material of the second patch 150 can be one of PET material, PP material, PC material, and PVC material. Preferably, the material of the second patch 150 is the same as that of the first patch 120 to maintain the consistency and coordination of the first patch 120 and the second patch 150.

[0037] Reference Figures 2 to 4 , in this embodiment, a second limiting protrusion 112 is provided along the edge of the second side 110b. The second limiting protrusion 112 and the second side 110b form a second limiting groove, and the second patch 150 is adaptively received in the second limiting groove. Through the corresponding second limiting groove, the installation position of the second patch 150 can be restricted, the second patch 150 can be limited, and the second patch 150 can be prevented from shifting. Moreover, it is convenient for the assembly and alignment of the second patch 150, making the installation process simpler and faster and improving the production efficiency.

[0038] A second adhesive layer (not shown in the figure) is provided on the side of the second patch 150 facing the second side 110b, and the second patch 150 is mounted on the second side 110b through the second adhesive layer.

[0039] Through the second adhesive layer, the second patch 150 can be firmly adhered to the second side 110b of the housing 110, making the assembly more efficient and simple without complex assembly steps. After being mounted, the appearance of the battery module is flat, enhancing the user experience. Moreover, the method of mounting the second patch 150 on the second side 110b of the housing 110 through the second adhesive layer is more automated, reducing the degree of manual participation, lowering the intensity of manual labor, and improving the production efficiency of the battery module.

[0040] Reference Figures 1 to 4 , in this embodiment, the battery module further includes a positive electrode connector 160 and a negative electrode connector 170. The positive electrode connector 160 is electrically connected to one of the battery cells 130, and the negative electrode connector 170 is electrically connected to the other battery cell 130. The battery module further includes an upper cover 180 detachably connected to the housing 110, and both the positive electrode connector 160 and the negative electrode connector 170 are disposed on the upper cover 180.

[0041] By providing the upper cover 180 and disposing both the positive electrode connector 160 and the negative electrode connector 170 of the battery module on the upper cover 180, and connecting the upper cover 180 to the housing 110 in a detachable manner, it is convenient for the assembly of the positive electrode connector 160 and the negative electrode connector 170. Among them, since multiple steps before ultrasonic welding require manual assistance and the degree of automation is low, compared with the existing method of connecting the upper cover 180 by ultrasonic welding, in this embodiment, the upper cover 180 and the housing 110 are connected in a detachable manner, and more assembly can be achieved through automated equipment, with a higher degree of automation and a more automated design.

[0042] Furthermore, a buckle 181 is provided on one of the upper cover 180 and the housing 110, and a slot 113 is provided on the other. The buckle 181 is engaged in the slot 113. The upper cover 180 and the housing 110 are detachably connected through the cooperation of the buckle 181 and the slot 113, with a simple structure, convenient assembly, and a more automated design.

[0043] Among them, a buckle 181 can be provided on the upper cover 180 and a slot 113 can be provided on the housing 110, or a buckle 181 can be provided on the housing 110 and a slot 113 can be provided on the upper cover 180, both of which can achieve the detachable connection between the upper cover 180 and the housing 110.

[0044] Preferably, in this embodiment, a buckle 181 is provided on the upper cover 180 and a slot 113 is provided on the housing 110. The upper cover 180 can achieve the reliability of the connection between the upper cover 180 and the housing 110 with a smaller thickness, and it is easy to hide the details of the connection between the two.

[0045] In this embodiment, the electrical connector 140 is a strip-shaped electrical connection piece. In the strip-shaped electrical connection piece, the strip-shaped design helps to provide a larger contact area, thereby reducing resistance and improving current transmission efficiency. Moreover, the sheet-shaped design makes the thickness of the electrical connector 140 thinner, which is beneficial to the miniaturization of the overall volume of the battery module.

[0046] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. For those skilled in the art, the technical solutions recorded in the above embodiments can be modified, or some of the technical features can be equivalently replaced; and all such modifications and replacements should fall within the protection scope of the appended claims of the present invention.

Claims

1. A battery module, characterized in that: It includes a shell, a first patch and multiple battery cells. The shell is provided with a first side surface in the thickness direction. The first patch is installed on the first side surface and covers the first side surface. The multiple battery cells are arranged in the shell, and two adjacent battery cells are electrically connected through an electrical connector.

2. The battery module according to claim 1, characterized in that: The first side surface is provided with a first limiting protrusion along its edge, the first limiting protrusion and the first side surface form a first limiting groove, and the first patch is adapted to be accommodated in the first limiting groove.

3. The battery module according to claim 1, characterized in that: A first adhesive layer is provided on a side of the first patch facing the first side surface, and the first patch is mounted on the first side surface through the first adhesive layer.

4. The battery module according to claim 1, characterized in that: The material of the first patch is one of PET material, PP material, PC material and PVC material.

5. The battery module according to claim 1, characterized in that: The shell is also provided with a second side surface opposite to the first side surface in the thickness direction. The battery module also includes a second patch, and the second patch is installed on the second side surface and covers the second side surface.

6. The battery module according to claim 5, characterized in that: The second side surface is provided with a second limiting protrusion along its edge, the second limiting protrusion and the second side surface form a second limiting groove, and the second patch is adapted to be accommodated in the second limiting groove.

7. The battery module according to claim 5, characterized in that: A second adhesive layer is provided on a side of the second patch facing the second side surface, and the second patch is mounted on the second side surface through the second adhesive layer.

8. The battery module according to claim 5, characterized in that: The material of the second patch is one of PET material, PP material, PC material and PVC material.

9. The battery module according to any one of claims 1 to 8, characterized in that: The battery module also includes a positive electrode connector and a negative electrode connector, the positive electrode connector is electrically connected to one of the battery cells, and the negative electrode connector is electrically connected to the other battery cell. The battery module also includes an upper cover detachably connected to the outer shell, and the positive electrode connector and the negative electrode connector are both arranged on the upper cover.

10. The battery module according to claim 9, characterized in that: One of the upper cover and the shell is provided with a buckle, and the other is provided with a slot, and the buckle is engaged in the slot.

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