A multi-layer cell fixing structure for stacked battery cells

Abstract

The utility model discloses a kind of multilayer electric core fixing structure for stacked battery unit, including box, its inside is provided with the accommodating cavity of one end opening, at least one electric core support is arranged in box, batten is respectively detachably connected with box and electric core support, at least one bolt is threaded at least one electric core support, and detachably connected with batten, handle and batten are detachably connected;The utility model is through the detachable connection of batten and electric core support by bolt, handle and batten are detachably connected, so that handle, batten and electric core support become a whole, when the voltage and capacity of battery unit need to be increased, only need to increase the number of electric core support, the length of screw rod and the height of box accordingly, so that each battery unit can accommodate more electric core, and by box form a whole, reduce the number of stacked layers, improve battery pack overall stability and stacking reliability, facilitate assembly and disassembly, facilitate post-period electric core maintenance.

Description

Technical Field

[0001] This utility model relates to the field of energy storage equipment technology, and in particular to a multi-layer cell fixing structure for stacked battery cells. Background Technology

[0002] Stacked batteries are battery packs formed by combining multiple battery cells in a stacked manner. Each battery cell works together through appropriate connection methods (such as series, parallel, or hybrid connection) to achieve performance indicators such as voltage and capacity that meet the requirements of different application scenarios.

[0003] Current stacked battery cells typically contain only one layer of cells. If a higher voltage and larger capacity battery pack is required, the number of battery cells must be increased. This increases the overall stacking height and number of layers, thus affecting stability and stacking reliability. Furthermore, such battery cells are inconvenient to assemble and disassemble, and also make it difficult to maintain the cells later. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a multi-layer cell fixing structure for stacked battery cells, solving the problems that traditional stacked battery cells can only accommodate one layer of cells and are inconvenient to assemble, disassemble, and maintain. To achieve the above objective, the present utility model adopts the following technical solution:

[0005] The multi-layer cell fixing structure for stacked battery cells includes a housing with an internal receiving cavity open at one end, and further includes:

[0006] At least one cell support is disposed inside the housing for mounting the cell;

[0007] Pressure strips are detachably connected to the housing and the battery cell bracket, respectively.

[0008] At least one bolt passes through at least one of the cell supports and is detachably connected to the pressure bar;

[0009] The handle is detachably connected to the pressure strip.

[0010] Optionally, the pressure strip has a through hole, which is suitable for the bolt shank to pass through and limits the head of the bolt.

[0011] Optionally, a screw channel is provided through the cell support, the bolt's screw passes through the screw channel, and a nut is provided.

[0012] Optionally, the pressure strip is provided with a connecting seat, which is detachably connected to the handle and the box body respectively.

[0013] Optionally, the two ends of the connector are respectively provided with notches.

[0014] Optionally, the handle is provided with a screw hole.

[0015] Optionally, the connecting seat has a first through hole at each end corresponding to the handle.

[0016] Optionally, a seal is provided between the connecting seat and the handle.

[0017] Optionally, it also includes a cover plate, which is detachably connected to the box body, and the cover plate has a through groove suitable for the handle to pass through.

[0018] Optionally, the bottom of the box is provided with a mating groove that matches the handle. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall exploded structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the pressure strip and bolt structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the battery cell support structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the box structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the handle structure of this utility model;

[0025] Figure 7 This is a schematic diagram of the bottom structure of the box body of this utility model;

[0026] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Handle; 3. Cell support; 4. Pressure strip; 5. Bolt; 6. Cover plate; 41. Through hole; 31. Screw channel; 40. Connecting seat; 42. Bottom wall; 43. First side wall; 44. Second side wall; 45. Notch hole; 11. Mounting seat; 12. Fixing screw hole; 21. Screw hole; 46. First through hole; 24. Seal; 61. Through groove; 13. Butt groove; 61. Positioning pin. Detailed Implementation

[0027] To facilitate understanding of this application, a more detailed description of the application is provided below with reference to the accompanying drawings and specific embodiments; preferred embodiments of the application are shown in the drawings; however, the application may be implemented in many different forms and is not limited to the embodiments described in this specification; rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of this application.

[0028] It should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. In the embodiments shown in the accompanying drawings, directional indications (such as up, down, left, right, front, and back) are used to explain the structure and movement of various components and are not absolute but relative. These descriptions are appropriate when these components are in the positions shown in the drawings. If the descriptions of the positions of these components change, these directional indications also change accordingly.

[0029] It should also be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence; it should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in a sequence other than those illustrated or described herein.

[0030] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit this application.

[0031] like Figures 1-2 As shown, one embodiment of this utility model is: the multi-layer cell fixing structure for stacked battery cells includes a housing 1, a handle 2, a cell support 3, a pressure strip 4, and bolts 5. The housing 1 has an internal cavity with an opening at the top and a detachable cover plate 6. At least one cell support 3 is disposed inside the housing 1 for installing cells. The pressure strip 4 is detachably connected to the housing 1 and the cell support 3 respectively. At least one bolt 5 passes through at least one cell support 3 and is detachably connected to the pressure strip 4. The handle 2 is detachably connected to the pressure strip 4.

[0032] In this embodiment, there is at least one or more cell support brackets 3, stacked sequentially. Each cell support bracket 3 contains one layer of cells. The pressure strip 4 is located on top of the top cell support bracket 3. At least one bolt 5 passes through the cell support bracket 3 and is detachably connected to the pressure strip 4. The handle 2 is detachably connected to the pressure strip 4, thus making the handle 2, pressure strip 4, and cell support bracket 3 a whole. When it is necessary to increase the voltage and capacity of the battery unit, it is only necessary to increase the length of the cell support bracket 3, the screw, and the height of the housing 1. This allows each battery unit to accommodate more cells, and the housing 1 forms a whole, reducing the number of stacked layers and improving the overall stability and stacking reliability of the battery pack. During installation, the entire cell and cell support bracket 3 can be installed into the housing 1 together by using the handle 2 and the pressure strip 4. Then, the pressure strip 2 and the housing 1 are fixed. During disassembly and maintenance, the connection between the pressure strip 2 and the housing 1 is disassembled, and the cell support bracket 3 and the cells are pulled out of the housing 1 by pulling the handle 2, which facilitates assembly and disassembly and facilitates later cell maintenance.

[0033] In one embodiment, such as Figure 3 As shown, the pressure strip 4 has through holes 41, which form a clearance fit with the screw of the bolt 5, allowing the screw of the bolt 5 to pass through and limiting the head of the bolt 5. The number of through holes 41 matches the number of bolts 5.

[0034] In one embodiment, such as Figure 3 As shown, multiple through holes 41 are arranged on the pressure bar 4. Each through hole 41 is suitable for the screw of the bolt 5 to pass through. The number of bolts 5 can be selected as needed to ensure a stable connection between the pressure bar 4 and the battery cell and uniform force distribution.

[0035] In one embodiment, such as Figure 4 As shown, a screw channel 31 is provided through the cell bracket 3. The screw of the bolt 5 passes through the screw channel 31, and a nut is threaded to the bottom end of the screw. Tightening the nut can fix the pressure strip 4 and the cell bracket 3.

[0036] In one embodiment, a countersunk platform is provided at the bottom of the screw channel 31 to accommodate the nut, which keeps the nut and the bottom of the cell support 3 flat, thus facilitating the stability of the cell support 3.

[0037] In one embodiment, such as Figure 3 As shown, the pressure strip 3 is provided with connecting seats 40 at both ends. There are two handles 2, which correspond one-to-one with the two connecting seats 40 and can be detachably connected. In this way, the handles 2 and the pressure strip 4 are fixedly connected to the box 1 through the connecting seats 40, so that the battery cell support 3 and the box 1 become a whole and maintain internal stability when moving and stacking. When there are multiple layers of battery cells and the weight is heavy, the two handles 2 can ensure the stability of the movement of the battery cell support 3.

[0038] In other embodiments, there may be one connecting seat 40, which is located in the middle of the pressure strip, and there may also be one handle 2, which is detachably connected to the connecting seat.

[0039] In one embodiment, such as Figure 3 As shown, in order to improve the overall strength of the pressure strip 4, the middle part of the connecting seat has a bottom wall 42, a first side wall 43, and a second side wall 44. The bottom wall 42 is horizontally arranged and fits against the top surface of the battery cell bracket 3. The first side wall 43 and the second side wall 44 are respectively arranged opposite to each other on the top surface of the bottom wall 42 along the length direction of the bottom wall 42.

[0040] In one embodiment, such as Figure 3 , Figure 5 As shown, the two ends of the connecting seat 40 are respectively provided with notch holes 45, and the housing 1 is provided with a mounting seat 11. The top surface of the mounting seat 11 is provided with a fixing screw hole 12. The notch hole 45 facilitates the bolt 5 to be quickly aligned with the fixing screw hole 12.

[0041] In one embodiment, such as Figure 6 As shown, screw holes 21 are provided at both ends of the handle 2, and the handle 2 and the connecting seat 40 are detachably connected by the second bolt 25.

[0042] In one embodiment, such as Figure 2 , Figure 3 As shown, the connecting seat 40 has first through holes 46 at both ends corresponding to the handle 2. When the handle 2 is installed, the two ends of the handle 2 and the two first through holes 46 are aligned respectively, and the two screw holes 21 are vertically downward. The handle 2 and the connecting seat 40 are connected at the bottom of the connecting seat 40 by two second bolts 25 to improve surface uniformity.

[0043] In one embodiment, such as Figure 2 As shown, a seal 24 is provided between the connecting seat 40 and the handle 2. The seal 24 is used to waterproof and prevent water from entering the box 1, thereby improving safety.

[0044] In one embodiment, such as Figure 1 As shown, a through groove 61 is provided on the cover plate 6 corresponding to the position of the handle 2, which is suitable for the handle 2 to pass through. This makes the installation and removal of the cover plate 6 independent of the handle 2. The cover plate 6 and the box body 1 are detachably connected by multiple locking bolts. During maintenance, the internal battery cells can be taken out by simply removing the cover plate 6 and using the handle 2.

[0045] In one embodiment, such as Figure 7 As shown, a docking groove 13 is provided at the bottom of the box 1 corresponding to the position of the handle 2. The docking groove 13 matches the handle 2. When stacking multiple battery units, the handle 2 of the lower battery unit is inserted into the docking groove 1 of the upper box, which can limit the two adjacent battery units and improve the stacking stability.

[0046] In one embodiment, such as Figure 1 As shown, the top of the cover plate 6 is provided with multiple positioning pins 61, and the bottom of the box body 1 is provided with multiple positioning holes 14 corresponding to the multiple positioning pins 61. When multiple battery units are stacked, the multiple positioning pins 61 on the top of the lower cover plate 6 are inserted into the multiple positioning holes 14 on the bottom of the upper box body 1 to improve stacking stability.

[0047] It should be noted that the above-mentioned technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this utility model specification; and, for those skilled in the art, improvements or modifications can be made based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims of this utility model.

Claims

1. A multi-layer cell fixing structure for stacked battery cells, comprising a housing having an internal receiving cavity with one open end, characterized in that, Also includes: At least one cell support is disposed inside the housing for mounting the cell; Pressure strips are detachably connected to the housing and the battery cell bracket, respectively. At least one bolt passes through at least one of the cell supports and is detachably connected to the pressure bar; The handle is detachably connected to the pressure strip.

2. The multi-layer cell fixing structure for stacked battery cells according to claim 1, characterized in that, The pressure strip has a through hole, which is suitable for the bolt shank to pass through and limits the head of the bolt.

3. The multi-layer cell fixing structure for stacked battery cells according to claim 1, characterized in that, A screw channel is provided through the cell support, the bolt's screw passes through the screw channel, and a nut is provided.

4. The multi-layer cell fixing structure for stacked battery cells according to claim 1, characterized in that, The pressure strip is provided with a connecting seat, which is detachably connected to the handle and the box body respectively.

5. A multi-layer cell fixing structure for stacked battery cells according to claim 4, characterized in that, The connector has notches at both ends.

6. A multi-layer cell fixing structure for stacked battery cells according to claim 4, characterized in that, The handle is provided with screw holes.

7. A multi-layer cell fixing structure for stacked battery cells according to claim 6, characterized in that, The connecting seat has a first through hole at each end corresponding to the handle.

8. A multi-layer cell fixing structure for stacked battery cells according to claim 4, characterized in that, A sealing element is provided between the connecting seat and the handle.

9. A multi-layer cell fixing structure for stacked battery cells according to claim 1, characterized in that, It also includes a cover plate, which is detachably connected to the box body, and the cover plate has a through groove suitable for the handle to pass through.

10. A multilayer cell fixing structure for stacked battery cells according to claim 1, characterized in that, The bottom of the box has a mating groove that matches the handle.

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