A battery support structure and battery module

Abstract

The present invention provides a battery cell support structure and a battery cell module, which relate to the field of new energy. The battery cell support structure comprises an upper support and a lower support. A first fixing groove is provided on the upper support; a second fixing groove is provided on the lower support; the size of the first fixing groove and the size of the second fixing groove are both adapted to the upper tolerance size of the battery cell; the first fixing groove and the second fixing groove are used to fix the battery cell. The battery cell support structure fixes the size of a single battery cell structure, which is conducive to realizing modular and stable installation of the battery cell, and has a simple structure and is easy to assemble.

Description

Technical Field

[0001] The present invention relates to the field of new energy, and in particular to a battery cell support structure and a battery cell module. Background Art

[0002] At present, due to the process of design and manufacturing, the thickness of square aluminum shell battery cells varies greatly. When multiple battery cells are combined into a module, cumulative errors occur, which brings difficulties to subsequent related design and assembly.

[0003] In addition, during use, the size of the battery cell will change due to expansion, affecting the stability after assembly.

[0004] Therefore, designing a structure that can standardize the size of battery cells and facilitate modular installation of battery cells is an urgent problem to be solved. Summary of the invention

[0005] The purpose of the present invention includes providing a battery cell bracket structure, which can fix the structural dimensions of a single battery cell, facilitate modular and stable installation of the battery cell, and has a simple structure and is easy to assemble.

[0006] The present invention also aims to provide a battery cell module, which modularizes a single battery cell structure with standardized size, so that the size of the battery cell module is fixed and easy to install.

[0007] The first technical solution provided by the present invention is:

[0008] A battery cell support structure comprises an upper support and a lower support; the upper support is provided with a first fixing groove; the lower support is provided with a second fixing groove; the size of the first fixing groove and the size of the second fixing groove are both adapted to the upper tolerance size of the battery cell; the first fixing groove and the second fixing groove are used to fix the battery cell.

[0009] Further, the upper bracket includes a press-fitting part and a fixing part; the press-fitting part is provided with the first fixing groove; the fixing part is arranged on a side of the press-fitting part away from the first fixing groove; the press-fitting part is provided with a first press-fitting groove and a second press-fitting groove on a side away from the first fixing groove, and the first press-fitting groove and the second press-fitting groove are respectively located on both sides of the fixing part; a first press-fitting hole is provided at the bottom of the first press-fitting groove, and the first press-fitting groove is connected with the first fixing groove through the first press-fitting hole; a second press-fitting hole is provided at the bottom of the second press-fitting groove, and the second press-fitting groove is connected with the first fixing groove through the second press-fitting hole.

[0010] Furthermore, the upper bracket also includes a first side surround, a first reinforcement, a second side surround and a second reinforcement; the first side surround and the second side surround are relatively arranged on both sides of the press-fit portion; the first side surround is provided with first reinforcement holes at intervals, and the first reinforcement is arranged in the first reinforcement holes; the second side surround is provided with second reinforcement holes at intervals, and the second reinforcement is arranged in the second reinforcement hole.

[0011] Furthermore, it also includes a cover plate; a first clamping groove is provided on one end of the first side surround away from the press-fitting portion; a second clamping groove is provided on one end of the second side surround away from the press-fitting portion; support columns are arranged at intervals on the fixing portion; one end of the cover plate is arranged in the first clamping groove, and the other end is arranged in the second clamping groove, and the support columns support the cover plate.

[0012] Furthermore, a first exhaust hole and a second exhaust hole are formed on the press-fitting portion, and the first exhaust hole is located between the fixing portion and the first press-fitting groove, and the second exhaust hole is located between the fixing portion and the second press-fitting groove.

[0013] Furthermore, the upper bracket also includes a first press-fit plate and a second press-fit plate; the first press-fit plate is arranged in the first press-fit groove; the second press-fit plate is arranged in the second press-fit groove.

[0014] Furthermore, the lower bracket includes a base; the second fixing groove is formed on the base; a groove is formed on a side of the base away from the second fixing groove, and the groove is connected to the second fixing groove.

[0015] Furthermore, the lower bracket also includes a third reinforcement member; a third reinforcement hole is arranged at intervals on a side of the base away from the second fixing groove, and the third reinforcement member is arranged in the third reinforcement hole.

[0016] The second technical solution provided by the present invention is:

[0017] A battery cell module comprises a battery cell and the battery cell support structure described in the first solution; the upper support and the lower support are arranged opposite to each other, and one end of the battery cell is located in the first fixing groove, and the other end is located in the second fixing groove.

[0018] Furthermore, it also includes a connecting piece; there are multiple battery cells; there are multiple battery cell support structures, and the number is the same as the number of battery cells; each battery cell is assembled with each battery cell support structure to form a single battery cell structure; each upper support is provided with a connecting hole; multiple single battery cell structures are arranged side by side so that the multiple connecting holes are coaxial; the connecting piece passes through the multiple connecting holes to connect the multiple single battery cell structures.

[0019] The beneficial effects of a battery cell support structure and a battery cell module provided by the present invention are:

[0020] The battery cell support structure fixes the battery cell by setting an upper support and a lower support, so that the size of the single battery cell structure is standardized, especially in the thickness direction, which is conducive to the modular installation of the battery cell and fully ensures the stability of the battery cell module installation.

[0021] The battery cell module combines single batteries with a battery cell support structure to ensure that the size of the battery cell module is fixed and standardized after assembly, which is conducive to the stable installation of the battery cell module and also improves the heat dissipation effect of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A schematic diagram of an exploded structure of a cell support structure and a cell connection provided by an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the structure of an upper bracket of a battery cell bracket structure provided by an embodiment of the present invention from a first perspective;

[0025] Figure 3 A schematic structural diagram of an upper bracket of a battery cell bracket structure provided by an embodiment of the present invention from a second viewing angle;

[0026] Figure 4 A schematic structural diagram of a lower support of a cell support structure provided by an embodiment of the present invention;

[0027] Figure 5 A schematic diagram of the structure of a battery cell module provided in an embodiment of the present invention.

[0028] Icons: 001-cell module; 100-cell support structure; 01-upper support; 11-pressing part; 111-first fixing groove; 112-first press-fitting groove; 113-second press-fitting groove; 114-first press-fitting hole; 115-second press-fitting hole; 116-first exhaust hole; 117-second exhaust hole; 12-fixing part; 121-support column; 122-connecting hole; 13-first side wall; 131-first reinforcement hole; 132- First snap-in slot; 14-second side panel; 141-second reinforcement hole; 142-second snap-in slot; 15-first reinforcement member; 16-second reinforcement member; 02-lower bracket; 21-base; 211-second fixing slot; 212-groove; 213-third reinforcement hole; 22-third reinforcement member; 23-protrusion; 03-pressing plate; 31-first pressing plate; 32-second pressing plate; 04-cover plate; 200-battery cell; 300-gap. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the present invention, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the invention is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] Furthermore, the terms “first”, “second”, “third”, etc. are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Example

[0036] See also Figure 1 , this embodiment provides a battery cell support structure 100, including an upper support 01, a lower support 02, a pressing plate 03 and a cover plate 04. A first fixing groove 111 is provided on the upper support 01, and a second fixing groove 211 is provided on the lower support 02. The upper support 01 and the lower support 02 are arranged at two ends of the battery cell 200 opposite to each other, and one end of the battery cell 200 is located in the first fixing groove 111, and the other end is located in the second fixing groove 211. The pressing plate 03 includes a first pressing plate 31 and a second pressing plate 32. The first pressing plate 31 and the second pressing plate 32 are arranged on the upper support 01 and connected to the battery cell 200 so that the upper support 01 can be stably pressed on the battery cell 200. In order to protect the upper support 01, a cover plate 04 is provided, and the cover plate 04 is located on a side of the upper support 01 away from the battery cell 200.

[0037] In order to standardize the installation of the battery cell 200 and avoid being affected by the external dimensions of the battery cell 200, the upper bracket 01 and the lower bracket 02 for fixing the battery cell 200 are designed in a standardized manner. The size of the first fixing groove 111 and the size of the second fixing groove 211 are designed according to the upper tolerance size of the battery cell 200. In this way, on the one hand, the battery cell 200 can be stably clamped by the upper bracket 01 and the lower bracket 02, and on the other hand, since the external dimensions of the upper bracket 01 and the lower bracket 02 are controllable, standardized size design can be performed to improve the stability of the modular installation of the battery cell 200, and at the same time, it is convenient for the battery cell 200 to dissipate heat.

[0038] Below, in conjunction with the accompanying drawings, the structures of the sub-components of the battery cell support structure 100 are described in detail to clearly illustrate the battery cell support structure 100 .

[0039] See also Figure 2 and Figure 3The structure of the upper bracket 01 shown. The upper bracket 01 includes a press-fitting portion 11 and a fixing portion 12. A first fixing groove 111 is provided on one side of the press-fitting portion 11. The fixing portion 12 is arranged on a side of the press-fitting portion 11 away from the first fixing groove 111. Since the upper bracket 01 is press-fitted using a press-fitting plate 03, a first press-fitting groove 112 and a second press-fitting groove 113 are provided on a side of the press-fitting portion 11 away from the first fixing groove 111, and the first press-fitting groove 112 and the second press-fitting groove 113 are respectively located on both sides of the fixing portion 12.

[0040] Specifically, the first press-fit plate 31 is disposed in the first press-fit groove 112, and the second press-fit plate 32 is disposed in the second press-fit groove 113. The first press-fit plate 31 and the second press-fit plate 32 need to be connected to the battery cell 200 in order to stably press-fit the upper bracket 01 on the battery cell 200. Therefore, a first press-fit hole 114 is opened at the bottom of the first press-fit groove 112, and a second press-fit hole 115 is opened at the bottom of the second press-fit groove 113, and the first press-fit groove 112 is connected to the first fixed groove 111 through the first press-fit hole 114, and the second press-fit groove 113 is connected to the first fixed groove 111 through the second press-fit hole 115. The first press-fit plate 31 is connected to the battery cell 200 through the first press-fit hole 114, and the second press-fit plate 32 is connected to the battery cell 200 through the second press-fit hole 115. In this embodiment, the first pressing plate 31 is an aluminum strip having a shape that is compatible with the first pressing groove 112, and the second pressing plate 32 is an aluminum strip having a shape that is compatible with the second pressing groove 113. The aluminum strip is connected to the battery cell 200 by welding.

[0041] It is understandable that in order to increase the press-fitting strength and improve the stability of the press-fitting. A plurality of first press-fitting holes 114 may be provided, and are spaced apart at the bottom of the first press-fitting groove 112. Similarly, a plurality of second press-fitting holes 115 may be provided, and are spaced apart at the bottom of the second press-fitting groove 113. The number of the first press-fitting holes 114 and the number of the second press-fitting holes 115 are determined according to actual needs. Preferably, in this embodiment, there are four first press-fitting holes 114 and four second press-fitting holes 115, and the four first press-fitting holes 114 are evenly spaced apart at the bottom of the first press-fitting groove 112, and the four second press-fitting holes 115 are evenly spaced apart at the bottom of the second press-fitting groove 113.

[0042] Since the upper bracket 01 is arranged at the electrode end of the battery cell 200, and the battery cell 200 needs to be exhausted from the electrode end during use, a first exhaust hole 116 is opened between the fixing portion 12 and the first press-fitting groove 112, and a second exhaust hole 117 is opened between the fixing portion 12 and the second press-fitting groove 113 to facilitate exhaust of the battery cell 200.

[0043] In addition, the cover plate 04 is arranged on a side of the upper bracket 01 away from the first fixing groove 111 , so a first side enclosure 13 and a second side enclosure 14 are respectively arranged at both ends of the upper bracket 01 for mounting the cover plate 04 .

[0044] Specifically, the first side enclosure 13 and the second side enclosure 14 are arranged opposite to each other, and the first side enclosure 13 is located on a side close to the first press-fitting groove 112, and the second side enclosure 14 is located on a side close to the second press-fitting groove 113. In order to achieve installation and stable support of the cover plate 04, a first clamping groove 132 is provided on one end of the first side enclosure 13 away from the press-fitting portion 11, a second clamping groove 142 is provided on one end of the second side enclosure 14 away from the press-fitting portion 11, and a support column 121 is arranged at intervals on one side of the fixing portion 12 away from the press-fitting portion 11. In this way, one end of the cover plate 04 is arranged on the first clamping groove 132, and the other end is arranged on the second clamping groove 142, and the middle part of the cover plate 04 is abutted against the support column 121, so as to achieve stable installation and support.

[0045] The fixing portion 12 is provided with a connection hole 122, which is used for connecting and fixing multiple battery cells 200 when they are assembled. After the upper bracket 01 is pressed onto the battery cell 200, it can limit the dimensional change caused by the expansion of the battery cell 200. When the battery cell 200 expands, the expansion is more obvious, especially along the axis direction of the connection hole 122. In order to ensure that the upper bracket 01 can withstand the force generated by the expansion of the battery cell 200 and prevent the upper bracket 01 from being damaged along the axis direction of the connection hole 122, a first reinforcement hole 131 is provided on the first side enclosure 13 along the axis direction of the connection hole 122, and a second reinforcement hole 141 is provided on the second side enclosure 14 along the axis direction of the connection hole 122. The first reinforcement member 15 is disposed in the first reinforcement hole 131, and the second reinforcement member 16 is disposed in the second reinforcement hole 141. In this embodiment, the first reinforcement member 15 and the second reinforcement member 16 are both iron cores.

[0046] It can be understood that in order to further improve the strength of the upper bracket 01 in the axial direction of the connecting hole 122, multiple first reinforcement holes 131 and second reinforcement holes 141 can be provided. Multiple first reinforcement holes 131 are arranged at intervals on the first side enclosure 13 along the direction from the cover plate 04 to the press-fitting portion 11. Similarly, multiple second reinforcement holes 141 are arranged at intervals on the first side enclosure 13 along the direction from the cover plate 04 to the press-fitting portion 11. Preferably, in this embodiment, there are two first reinforcement holes 131 and two second reinforcement holes 141.

[0047] See also Figure 4The structure of the lower bracket 02 shown. The lower bracket 02 includes a base 21, a third reinforcement member 22 and a protrusion 23. A second fixing groove 211 is provided on the base 21. A groove 212 is provided on a side of the base 21 away from the second fixing groove 211, and the groove 212 is connected to the second fixing groove 211. The groove 212 is used to fix the battery cell 200 when the battery cell 200 is modularly installed.

[0048] The first reinforcement hole 131 and the second reinforcement hole 141 are provided in the same manner as the upper bracket 01. A third reinforcement hole 213 is provided on the side of the base 21 away from the first fixing groove 111 along the axial direction of the connecting hole 122. A plurality of third reinforcement holes 213 may be provided and are arranged at intervals on the base 21. The third reinforcement member 22 is provided in the third reinforcement hole 213. In this embodiment, the third reinforcement member 22 is an iron core, which effectively ensures the strength of the lower bracket 02 in the axial direction of the connecting hole 122.

[0049] The battery cell 200 is arranged in the second fixing groove 211, and is stably connected to the lower bracket 02 by the structural adhesive coated on the side wall of the second fixing groove 211. In addition, since the size of the second fixing groove 211 is designed according to the upper tolerance size of the shape of the battery cell 200, it is inevitable that the battery cell 200 will move slightly when it is arranged in the second fixing groove 211. Therefore, protrusions 23 are arranged at intervals on the side wall of the second fixing groove 211 to cooperate with the shape of the battery cell 200 for positioning.

[0050] The present embodiment also provides a battery cell module 001. The battery cell module 001 includes a connector, a plurality of battery cells 200, and a plurality of battery cell support structures 100 provided in the present embodiment. The number of battery cell support structures 100 is the same as the number of battery cells 200. Each battery cell 200 is assembled with each battery cell support structure 100 to form a single battery cell structure. The multiple single battery cell structures are arranged side by side so that the connection holes 122 opened on each upper support 01 are coaxially arranged. The connector passes through the connection holes 122 of each single battery cell structure in turn to connect the multiple single battery cell structures together. In the present embodiment, the connector is a long bolt.

[0051] Since each battery cell 200 is designed in a standardized manner through the battery cell support structure 100, when multiple single battery cell structures are combined together, the size in the axial direction of the connecting hole 122 is fixed and will not change due to the expansion of the battery cell 200, ensuring that the battery cell module 001 can be stably installed and fixed.

[0052] In addition, since the size of the upper bracket 01 and the lower bracket 02 is larger than the size of the battery cell 200, when multiple single battery cell structures are arranged side by side, a certain gap 300 will be maintained between adjacent battery cells 200, which is convenient for heat dissipation when the battery cells 200 are working. At the same time, since the gap 300 is generated between the battery cells 200, a good insulation effect can be achieved.

[0053] The battery support structure 100 and the battery module 001 provided in the embodiment of the present invention have at least the following beneficial effects:

[0054] The size of the first fixing groove 111 and the size of the second fixing groove 211 are designed according to the upper tolerance size of the battery cell 200, so that the battery cell 200 can be stably clamped by the upper bracket 01 and the lower bracket 02, and the standardized size design of the battery cell 200 is realized, thereby improving the stability of the modular installation of the battery cell 200 and facilitating the heat dissipation of the battery cell 200.

[0055] The press plate 03 is connected to the battery cell 200, and the upper bracket 01 can be stably set at the electrode end of the battery cell 200. A first exhaust hole 116 is opened between the fixing portion 12 and the first press groove 112, and a second exhaust hole 117 is opened between the fixing portion 12 and the second press groove 113 to facilitate exhaust of the battery cell 200.

[0056] A first reinforcement 15 is provided on the first side enclosure 13 , a second reinforcement 16 is provided on the second side enclosure 14 , and a third reinforcement 22 is provided on the lower bracket 02 , which effectively ensures that the battery cell support structure 100 can withstand the force generated by the expansion of the battery cell 200 and avoids damage to the battery cell support structure 100 along the axial direction of the connecting hole 122 .

[0057] In the battery cell module 001, a certain gap 300 is maintained between adjacent battery cells 200, which facilitates heat dissipation when the battery cells 200 are working and also provides a good insulation effect.

[0058] It should be noted that, in all the drawings, the reference numerals with arrows refer to virtual structures, such as holes, grooves, cavities, etc., and the reference numerals without arrows refer to physical structures.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A battery support structure, characterized in that: It comprises an upper bracket and a lower bracket; the upper bracket is provided with a first fixing groove; the lower bracket is provided with a second fixing groove; the size of the first fixing groove and the size of the second fixing groove are both adapted to the upper tolerance size of the battery cell; the first fixing groove and the second fixing groove are used to fix the battery cell; The upper bracket includes a press-fitting portion and a fixing portion; the press-fitting portion is provided with the first fixing groove; the fixing portion is arranged on a side of the press-fitting portion away from the first fixing groove; the press-fitting portion is provided with a first press-fitting groove and a second press-fitting groove on a side away from the first fixing groove, and the first press-fitting groove and the second press-fitting groove are respectively located on both sides of the fixing portion; a first press-fitting hole is provided at a distance at the bottom of the first press-fitting groove, and the first press-fitting groove is connected with the first fixing groove through the first press-fitting hole; a second press-fitting hole is provided at a distance at the bottom of the second press-fitting groove, and the second press-fitting groove is connected with the first fixing groove through the second press-fitting hole; The press-fitting portion is provided with a first exhaust hole and a second exhaust hole, wherein the first exhaust hole is located between the fixing portion and the first press-fitting groove, and the second exhaust hole is located between the fixing portion and the second press-fitting groove; The upper bracket further includes a first press-fit plate and a second press-fit plate; the first press-fit plate is disposed in the first press-fit groove; and the second press-fit plate is disposed in the second press-fit groove.

2. The battery support structure according to claim 1, characterized in that: The upper bracket also includes a first side surround, a first reinforcement, a second side surround and a second reinforcement; the first side surround and the second side surround are arranged on both sides of the press-fit portion opposite to each other; the first side surround is provided with first reinforcement holes at intervals, and the first reinforcement is arranged in the first reinforcement holes; the second side surround is provided with second reinforcement holes at intervals, and the second reinforcement is arranged in the second reinforcement holes.

3. The battery support structure according to claim 2, characterized in that: It also includes a cover plate; a first clamping groove is provided on one end of the first side surround away from the press-fitting portion; a second clamping groove is provided on one end of the second side surround away from the press-fitting portion; support columns are arranged at intervals on the fixing portion; one end of the cover plate is arranged in the first clamping groove, and the other end is arranged in the second clamping groove, and the support column supports the cover plate.

4. The battery support structure according to claim 1, characterized in that: The lower bracket includes a base; the base is provided with the second fixing groove; the base is provided with a groove on a side away from the second fixing groove, and the groove is communicated with the second fixing groove.

5. The battery support structure according to claim 4, characterized in that: The lower bracket also includes a third reinforcement member; a third reinforcement hole is arranged at intervals on a side of the base away from the second fixing groove, and the third reinforcement member is arranged in the third reinforcement hole.

6. A battery cell module, characterized in that: It comprises a battery cell and the battery cell support structure according to any one of claims 1 to 5; the upper support and the lower support are arranged opposite to each other, and one end of the battery cell is located in the first fixing groove, and the other end is located in the second fixing groove.

7. The battery cell module according to claim 6, characterized in that: It also includes a connecting piece; there are multiple battery cells; there are multiple battery cell support structures, and the number is the same as the number of battery cells; each battery cell is assembled with each battery cell support structure to form a single battery cell structure; each upper support is provided with a connecting hole; multiple single battery cell structures are arranged side by side so that the multiple connecting holes are coaxial; the connecting piece passes through the multiple connecting holes to connect the multiple single battery cell structures.

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