Battery pack

Abstract

The utility model discloses a battery pack. The battery pack comprises a box body, battery cells and a supporting component, the battery cell is arranged in the mounting space of the box body, and the bottom surface of the battery cell is propped against the supporting component; the supporting part comprises a supporting body, an excessive glue baffle and a sealing plate; the support body is provided with a top plate and a side plate; the excessive glue baffle is arranged in the supporting body and is connected with the supporting body; the sealing plate is connected with the supporting body. Therefore, the battery cells in the battery pack can be supported and fixed through the supporting component, and meanwhile, the production cost of the battery pack is reduced.

Description

Technical Field

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

[0002] With the continuous development of the battery industry, various specifications of battery pack products will be launched to meet different market demands. For the convenience of assembly, battery packs of different specifications generally have the same shell specifications, and only differ in the cell capacity and number of cells. During the product production process, the changes in different cell capacities and the number of cells will have a great impact on the installation of the battery pack and the arrangement of internal components, requiring the battery pack structure to be redesigned, resulting in high production costs. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a battery pack, which can support and fix the internal battery cells while reducing the production cost of the battery pack.

[0004] According to the battery pack of the embodiment of the utility model, the battery pack includes: a box body, a battery cell and a support component. The battery cell is arranged in the installation space of the box body, and the bottom surface of the battery cell abuts against the support component; the support component includes: a support body, an overflow glue baffle and a sealing plate. The support body has a top plate and a side plate. The overflow glue baffle is arranged in the support body and connected to the support body, and the sealing plate is connected to the support body.

[0005] According to the battery pack of the embodiment of the utility model, the battery cell is arranged in the installation space of the box body, and the bottom surface of the battery cell is stopped against the support component. The support body of the support component is composed of a top plate and a side plate. The side plate can provide support for the top plate on one side of the top plate, and the top plate forms a support surface on the other side. When the support component is arranged in the battery pack, the battery cell cannot completely fill the internal space of the battery pack. At this time, the support component is arranged at the bottom of the battery cell, and the support surface of the top plate of the support body can support the bottom surface of the battery cell to fill the space in the battery pack and ensure the stability of the battery cell in the battery pack. When the battery cell is fixed by the potting process, the potting glue can flow between the overflow glue baffle and the support body. After the potting glue solidifies, the battery cell can be fixedly connected to the support component, and the battery cell fixed in the box body can be firmly connected to the box body. The support component has a simple structure and a low production cost. Therefore, the production cost of the battery pack can be reduced while supporting and fixing the battery cell in the battery pack through the support component.

[0006] In some embodiments, the side plate is connected to the top plate and is suitable for providing support for the battery cell.

[0007] In some embodiments, the glue overflow baffle is disposed in the support body and connected to the support body, and the glue overflow baffle and the support body enclose a glue overflow cavity inside the support body.

[0008] Furthermore, the sealing plate is arranged on one side of the supporting body in the first direction, and a glue overflow hole is opened in the sealing plate, and the glue overflow hole communicates with the glue overflow cavity and the installation space in the box body.

[0009] In some embodiments, the support component further includes an insulating plate, wherein the insulating plate is disposed between the support body and the bottom surface of the battery cell, and the insulating plate is in contact with a support surface of the support body.

[0010] Furthermore, the support component further comprises a buffer plate, the buffer plate is arranged between the insulating plate and the support body, and the buffer plate is in contact with the support surface. The side plate is provided with a bending portion at the end away from the top plate, and the extending direction of the bending portion is parallel to the extending direction of the top plate.

[0011] In some embodiments, the supporting body further includes a partition, one end of which is connected to the top plate, and a plurality of the side plates form spacing cavities, and the partition is disposed between adjacent spacing cavities.

[0012] In some embodiments, the sealing plate is made of insulating material, and is fixedly connected to one side of the support body in the first direction, and the sealing plate is fixedly connected to one side of the overflow glue baffle in the first direction.

[0013] In some embodiments, the box body comprises: a box body frame and a box body side panel. The box body frame has an installation space therein; and the supporting component is an integrally formed extruded profile, and is arranged in the installation space.

[0014] Furthermore, the box side panels are arranged on both sides of the box frame, the supporting components are tightly fitted with the box side panels, and glue injection channels are formed on the box side panels, and at least a part of the glue injection channels is connected to the glue overflow hole.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 It is an exploded view of the battery pack of the first embodiment of the utility model.

[0018] Figure 2 It is a perspective view of a battery pack according to an embodiment of the first aspect of the utility model.

[0019] Figure 3 It is a three-dimensional schematic diagram of the support body of the battery pack of the first embodiment of the utility model.

[0020] Figure 4 It is a front view of a partial structure of a supporting component of an embodiment of the first aspect of the utility model.

[0021] Figure 5 It is a front exploded schematic diagram of the supporting component of the first embodiment of the utility model.

[0022] Figure 6 It is a rear exploded schematic diagram of the supporting component of the first embodiment of the utility model.

[0023] Reference numerals:

[0024] Battery Pack 1,

[0025] Supporting member 100,

[0026] The supporting body 110, the top plate 111, the supporting surface 1111, the side plate 112, the bending portion 1121, the partition plate 113,

[0027] The overflow glue baffle 120, the overflow glue cavity 121,

[0028] Sealing plate 130, glue overflow hole 131,

[0029] Insulation board 140,

[0030] Buffer plate 150,

[0031] Box 200,

[0032] Box frame 210,

[0033] Box side panel 220, glue pouring channel 221,

[0034] Battery cells 300. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Reference below Figure 1-Figure 6 A battery pack 1 according to an embodiment of the present invention is described.

[0039] like Figure 1-Figure 3 As shown, according to the battery pack 1 of the embodiment of the utility model, the battery pack 1 includes: a box body 200, a battery cell 300 and a support component 100. The support component 100 includes: a support body 110, a glue overflow baffle 120 and a sealing plate 130.

[0040] The battery cell is arranged in the installation space of the box, and the bottom surface of the battery cell abuts against the support component. The support body 110 has a top plate 111 and a side plate 112. The overflow baffle 120 is arranged in the support body 110 and connected to the support body 110, and the sealing plate 130 is connected to the support body 110.

[0041] Specifically, the battery cell is arranged in the installation space of the box body, and the bottom surface of the battery cell abuts against the support component. The support body 110 of the support component is composed of a top plate 111 and a side plate 112. The side plate 112 can provide support for the top plate 111 on one side of the top plate 111, and the top plate 111 forms a support surface 1111 on the other side. When the support component 100 is arranged in the battery pack 1, the battery cell 300 cannot completely fill the internal space of the battery pack 1. At this time, the support component 100 is arranged at the bottom of the battery cell 300, and the support surface 1111 of the top plate 111 of the support body 110 can support the bottom surface of the battery cell 300 to fill the space in the battery pack 1 and ensure the stability of the battery cell 300 in the battery pack 1. When the battery cell 300 is fixed by the potting process, the potting glue can flow between the overflow glue baffle 120 and the support body 110. After the potting glue solidifies, the battery cell 300 can be fixedly connected to the support component 100, and the battery cell fixed in the box can be firmly connected to the box. The support component 100 has a simple structure and a low production cost.

[0042] By providing a sealing plate 130 on one side of the support body 110 in the first direction, a gap can be avoided between the support structure and the battery pack 1, so that the support structure and the battery pack 1 are closely fitted, thereby ensuring the stability of the support structure supporting the battery cell 300. The first direction is parallel to the thickness extension direction of the support body 110.

[0043] According to the support component 100 for the battery pack 1 according to the embodiment of the utility model, the support component 100 can support and fix the battery cells 300 in the battery pack 1 while reducing the production cost of the battery pack 1 .

[0044] In some embodiments, the side plate 112 is connected to the top plate 111 and is suitable for providing support for the battery cell 300 .

[0045] Specifically, the side plate 112 is disposed on one side of the top plate 111 , and the other side of the top plate 111 forms a support surface 1111 , which is suitable for supporting the bottom surface of the battery cell 300 .

[0046] In some embodiments, the overflow glue baffle 120 is disposed in the support body 110 and connected to the support body 110, and the overflow glue baffle 120 and the support body 110 surround an overflow glue cavity 121. The sealing plate 130 is disposed on one side of the support body 110 in the first direction, and the sealing plate 130 is provided with an overflow glue hole 131, which is disposed corresponding to the overflow glue cavity 121, and the overflow glue hole is connected to the installation space in the box.

[0047] Specifically, the overflow glue baffle 120 can form an overflow glue cavity 121 by connecting with the support body 110, and the overflow glue hole 131 on the sealing plate 130 is arranged corresponding to the overflow glue cavity 121, and the overflow glue hole is connected to the installation space in the box. When the battery cell 300 is fixed by the potting process, the potting glue can flow between the overflow glue baffle 120 and the support body 110. After the potting glue solidifies, the battery cell 300 can be fixedly connected to the support component 100, and the battery cell fixed in the box can be firmly connected to the box. The support component 100 has a simple structure and a low production cost.

[0048] It is understandable that the connection between the overflow glue baffle 120 and the support body 110 can include various forms, for example, the overflow glue baffle 120 can be connected to the top plate 111, and the overflow glue baffle 120 and the top plate 111 are surrounded, so that the overflow glue cavity 121 can be formed on the side of the top plate 111 facing the side plate 112; the overflow glue baffle 120 can also be connected to the side plate 112, and the overflow glue baffle 120 and the side plate 112 are surrounded, so that the overflow glue cavity 121 can be formed on the side plate 112; the overflow glue baffle 120 can also be connected to the top plate 111 and the side plate 112 respectively, and the overflow glue baffle 120 is connected to the top plate 111 and the side plate 112 respectively, so that the overflow glue cavity 121 can be surrounded between the top plate 111 and the side plate 112. When the potting glue flows into the overflow glue cavity 121 and solidifies through the potting process, the connection stability between the support structure and the battery cell 300 can be improved.

[0049] It should be noted that there is no specific restriction on the shape of the overflow glue cavity 121 enclosed by the overflow glue baffle 120. For example, the overflow glue cavity 121 enclosed by the overflow glue baffle 120 and the top plate 111 in the cross section perpendicular to the first direction can be a square space, a circular space, etc., which can be selected according to actual conditions. It only needs to ensure that part of the potting glue can flow into the overflow glue cavity 121 during the potting process.

[0050] like Figure 5-Figure 6 As shown, in some embodiments, the support component 100 further includes an insulating plate 140 , which is disposed between the support body 110 and the bottom surface of the battery cell 300 , and the insulating plate 140 is in contact with a support surface 1111 of the support body 110 .

[0051] Specifically, by arranging the insulating plate 140 between the support body 110 and the bottom surface of the battery cell 300, one side of the insulating plate 140 is in contact with the support surface 1111, and the other side of the insulating plate 140 is in contact with the bottom surface of the battery cell 300, so that the support component 100 and the battery cell 300 can be spaced apart. Thus, the safety of the battery cell 300 can be improved.

[0052] Furthermore, the support component 100 further includes a buffer plate 150 . The buffer plate 150 is disposed between the insulating plate 140 and the support body 110 . The buffer plate 150 is in contact with the support surface 1111 .

[0053] Specifically, a buffer plate 150 is provided between the support body 110 and the insulating plate 140 to provide buffering for the battery cell 300 on the basis of filling the gap between the support component 100 and the battery cell 300. After the battery pack 1 is assembled, the working environment of the battery pack 1 may include various vibrations. By providing the buffer plate 150, buffering can be provided when the battery cell 300 is subjected to vibration.

[0054] Therefore, the safety of the battery cell 300 can be further improved.

[0055] Optionally, the material of the buffer plate 150 is buffer cotton. By setting the material of the buffer plate 150 to be buffer cotton, the production cost can be reduced on the basis of providing good buffering for the battery cell 300.

[0056] Further optionally, the room temperature compression rate of the buffer plate 150 is 1%-6%. By setting the room temperature compression rate of the buffer plate 150 to a lower level, the movement of the battery cell 300 can be reduced while ensuring that the buffer plate 150 effectively buffers the battery cell 300, thereby ensuring the stability of the battery cell 300.

[0057] like Figure 3 As shown, in some embodiments, the side plate 112 is provided with a bending portion 1121 at the end portion of the side away from the top plate 111 , and the extending direction of the bending portion 1121 is parallel to the extending direction of the top plate 111 .

[0058] Specifically, when the battery cell 300 is supported by the support body 110, one side of the support body 110 supports the bottom surface of the battery cell 300 through the support surface 1111, and the other side of the support body 110 provides support through two side plates 112. The end of the side plate 112 away from the top plate 111 can be stopped with the structural parts in the battery pack 1 to ensure the stability of the battery cell 300. By providing a bending portion 1121 parallel to the extension direction of the top plate 111 at the end of the side plate 112 away from the top plate 111, the contact area between the side plate 112 and the structural parts in the battery pack 1 can be increased.

[0059] Thus, the stability of the support component 100 in supporting the battery cell 300 can be improved.

[0060] like Figure 3-Figure 4 As shown, in some embodiments, the support body 110 further includes a partition 113 , one end of which is connected to the top plate 111 , a spacing cavity is formed between the side plates 112 , and the partition 113 is disposed between adjacent spacing cavities.

[0061] Specifically, by arranging the partition 113 between adjacent spacing cavities and connecting one end to the top plate 111, the top plate 111 can be supported in the middle of the top plate 111. When a large number of battery cells 300 are arranged on the support structure, by arranging multiple spacing cavities and arranging the partition 113 between every two spacing cavities, the overall structural strength of the support structure is improved. In this way, the stability of the support structure in supporting the battery cells 300 can be improved.

[0062] Optionally, the partition 113 is provided with a bent portion at the end away from the top plate 111, and the extending direction of the bent portion is parallel to the extending direction of the top plate 111. By providing a bent portion (not shown in the figure) parallel to the extending direction of the top plate 111 at the end of the partition 113 away from the top plate 111, the contact area between the partition 113 and the structural parts in the battery pack 1 can be increased, thereby improving the structural strength of the support body 110 and further improving the stability of the battery cell 300.

[0063] Furthermore, a glue overflow baffle 120 is provided in the spacing cavity. By providing the glue overflow baffle 120 in each spacing cavity, a glue overflow cavity 121 can be formed in each spacing cavity, and each glue overflow cavity 121 has a potting glue during the glue pouring process, thereby further improving the connection strength between the support component 100 and the battery cell 300 and improving the stability of the battery cell 300.

[0064] like Figure 5-Figure 6 As shown, in some embodiments, the sealing plate 130 is made of an insulating material, and the sealing plate 130 is fixedly connected to one side of the support body 110 in the first direction, and the sealing plate 130 is fixedly connected to one side of the overflow glue baffle 120 in the first direction. By fixing the sealing plate 130 to the support body 110 and the overflow glue baffle 120 respectively, it can be ensured that the potting glue only flows into the overflow glue cavity 121 from the overflow glue hole 131 opened in the sealing plate 130 during the potting process, reducing the potting glue flowing to other positions, reducing the amount of potting glue used, and using the sealing plate 130 made of an insulating material can form a better protection for the battery cell 300. In this way, the production cost can be reduced while ensuring safety.

[0065] In some embodiments, the support body 110 is integrally formed. When processing the support structure, the support body 110 can be integrally formed, which can improve the overall structural strength of the support body 110 on the one hand, and reduce the production cost of the support structure on the other hand.

[0066] It is understandable that the support body 110 may be processed in a variety of ways. For example, the support body 110 may be processed by injection molding, extrusion molding, or compression molding, which may be selected according to actual needs.

[0067] like Figure 1-Figure 2As shown, in some embodiments, the box 200 includes: a box frame 210 and a box side panel 220. The box frame 210 has an installation space; the support component 100 is an integrally formed extruded profile, which is arranged in the installation space; the box side panel 220 is arranged on both sides of the box frame 210, the support component 100 is tightly fitted with the box side panel 220, and a glue pouring channel 221 is formed on the box side panel 220, and at least part of the glue pouring channel 221 is connected to the glue overflow hole 131.

[0068] Specifically, by arranging the support component 100 in the box body 200, the glue pouring channel 221 on the box body side plate 220 can be connected with the glue overflow hole 131 of the sealing plate 130. During the potting process, the potting glue can flow into the glue overflow cavity 121 through the glue overflow hole 131. After the potting glue solidifies, the battery cell 300 fixed in the box body 200 can be firmly connected to the box body 200, thereby improving the stability of the battery cell 300. In addition, since the support component 100 is an integrally formed extruded profile, the production cost of the battery pack can be reduced.

[0069] The following describes the assembly method of the battery pack 1 according to an embodiment of the present utility model.

[0070] First, one side of the support body 110 in the first direction is fixedly connected to the sealing plate 130, and then the buffer plate 150 and the insulating plate 140 are laid on the support surface 1111 of the top plate 111. Then the support structure is set at the bottom of the box 200 and pre-fixed by the tooling, and then the battery cell 300 is set in the box 200 so that the bottom surface of the battery cell 300 and the insulating plate 140 of the support component 100 are stopped. Add potting glue into the box 200. Since the potting glue has low viscosity and good fluidity, the potting glue will flow into the overflow cavity 121 from the overflow hole 131 through the potting flow channel 221 of the box side plate 220. Under the action of atmospheric pressure, the height of the potting glue in the overflow cavity 121 will increase to a certain height, so that the tooling is kept in a compacted state. After the potting glue solidifies, the battery cell 300, the box 200 and the support component 100 in the box 200 can be connected and fixed to each other.

[0071] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0072] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that: include: box(200); A battery cell (300), the battery cell (300) being arranged in the installation space of the box body (200), the bottom surface of the battery cell (300) being in abutment with the support component (100); The support component (100) comprises a support body (110), a glue overflow baffle (120), and a sealing plate (130); The supporting body (110) comprises a top plate (111) and a side plate (112); The overflow glue baffle (120) is disposed in the support body (110) and connected to the support body (110); The sealing plate (130) is connected to the supporting body (110).

2. The battery pack according to claim 1, characterized in that: The side plate (112) is connected to the top plate (111) and is suitable for providing support for the battery cell (300).

3. The battery pack according to claim 1, characterized in that: The glue overflow baffle (120) is disposed in the support body (110) and connected to the support body (110); the glue overflow baffle (120) and the support body (110) enclose a glue overflow cavity (121) inside the support body (110).

4. The battery pack according to claim 3, characterized in that: The sealing plate (130) is arranged on one side of the supporting body (110) in a first direction, and the sealing plate (130) is provided with a glue overflow hole (131), wherein the glue overflow hole (131) communicates with the glue overflow cavity (121) and the installation space in the box body (200).

5. The battery pack according to claim 1, characterized in that: The support component further comprises an insulating plate (140), wherein the insulating plate (140) is arranged between the support body (110) and the bottom surface of the battery cell (300), and the insulating plate (140) is in contact with a support surface (1111) of the support body (110).

6. The battery pack according to claim 5, characterized in that: The support component further comprises a buffer plate (150), wherein the buffer plate (150) is arranged between the insulating plate (140) and the support body (110), and the buffer plate (150) is in contact with the support surface (1111); The side plate (112) is provided with a bending portion (1121) at an end portion on a side away from the top plate (111), and an extension direction of the bending portion (1121) is parallel to an extension direction of the top plate (111).

7. The battery pack according to claim 1, characterized in that: The supporting body (110) further comprises a partition plate (113), one end of the partition plate (113) being connected to the top plate (111), a plurality of side plates (112) forming a spacing cavity, and the partition plate (113) being arranged between adjacent spacing cavities.

8. The battery pack according to claim 1, characterized in that: The sealing plate (130) is made of insulating material, and is fixedly connected to one side of the support body (110) in the first direction, and the sealing plate (130) is fixedly connected to one side of the glue overflow baffle (120) in the first direction.

9. The battery pack according to any one of claims 1 to 8, characterized in that: The box body (200) comprises: a box body frame (210) and a box body side plate (220); The box frame (210) has an installation space therein; The support component (100) is an integrally formed extruded profile and is arranged in the installation space.

10. The battery pack according to claim 9, characterized in that: The box side panels (220) are arranged on both sides of the box frame (210), the support component (100) is tightly fitted with the box side panels (220), and a glue injection flow channel (221) is formed on the box side panels (220).

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