Battery cell support, battery unit and battery pack

Abstract

The utility model relates to the technical field of batteries, and provides a battery cell bracket, a battery unit and a battery pack. The battery cell bracket comprises a box body, the box body is provided with an accommodating cavity for mounting the battery cell monomers; the box body is provided with a connecting part. The connecting part is configured to be detachably installed on the battery box through a fastener. Therefore, the battery cell monomers can be bonded with the battery box without a structural adhesive. And when the battery pack needs to be maintained, the faulted single battery can be independently disassembled, and the disassembly is convenient and rapid, so that the technical problems of high maintenance difficulty and high maintenance cost of the battery pack are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a battery core bracket, a battery unit and a battery pack. Background Art

[0002] In related technologies, a battery pack typically consists of a battery case and multiple battery modules. The battery modules are secured to the case by applying structural adhesive to the bottom of the battery case. However, this adhesive bonding method makes it difficult to remove the battery modules. Repairing the battery pack requires replacing the entire battery module or battery pack, resulting in high repair costs. Utility Model Content

[0003] The embodiments of the present utility model provide a battery cell bracket, a battery unit and a battery pack, which can improve the technical problem of inconvenient maintenance of the battery pack.

[0004] In a first aspect, an embodiment of the present invention provides a battery cell support, comprising:

[0005] The box body is configured with a receiving cavity for installing the battery cell unit, and the box body is configured with a connecting portion, which is configured to be detachably installed on the battery box through a fastener.

[0006] In one embodiment, a pressing portion protruding toward the interior of the box body is configured on the box body, and the pressing portion is configured to abut against the battery cell.

[0007] In one embodiment, mounting notches are formed on either of the two opposite sides of the box body, and a pressing portion is formed in each mounting notch. The pressing portion is configured to be elastically deformed under the action of the battery cell.

[0008] In one embodiment, the pressing portion includes one or more of an arc-shaped pressing portion, a serpentine-shaped pressing portion, and a zigzag-shaped pressing portion.

[0009] In one embodiment, a heat-conducting notch is constructed on the bottom surface of the box body, a heat-conducting adhesive layer is provided in the heat-conducting notch, and the heat-conducting adhesive layer is configured to connect the battery cell and the bottom plate of the battery box.

[0010] In one embodiment, two opposite sides of the box body are respectively provided with a connecting portion extending away from each other, and each connecting portion is configured with a connecting hole.

[0011] In one embodiment, flexible layers are provided on inner surfaces of two opposite sides of the box body, and the flexible layers are configured to abut against side surfaces of the battery cells.

[0012] In a second aspect, an embodiment of the present invention provides a battery unit, comprising:

[0013] As the aforementioned battery cell bracket;

[0014] The battery cell is installed in the box body.

[0015] In a third aspect, an embodiment of the present invention provides a battery pack, comprising:

[0016] The battery cell as described above;

[0017] Battery box;

[0018] Wherein, a plurality of battery units are detachably connected in the battery box.

[0019] In one embodiment, at least two vertical plates are constructed in the battery box, and an installation cavity is formed between each two adjacent vertical plates. The battery unit is arranged in the installation cavity, wherein each vertical plate is constructed with a mounting hole, the connecting part is overlapped with the vertical plate, and the connecting hole of the connecting part is detachably connected to the mounting hole by a fastener.

[0020] In one embodiment, at least two battery cells are provided in each installation cavity, wherein two adjacent boxes are spaced apart with a gap D satisfying the following relationship: 0.1 mm ≤ D ≤ 1 mm.

[0021] Beneficial effects of the embodiments of the present utility model:

[0022] In the embodiments of this utility model, the battery cells are installed in the housing cavity of the box body, and the box body is removably mounted in the battery box using the connecting portion of the box body and fasteners. This eliminates the need for structural adhesive to bond the battery cells to the battery box. When the battery pack requires repair, faulty battery cells can be removed individually and quickly, thus alleviating the technical issues of difficult and costly battery pack repairs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is one of the structural schematic diagrams of the battery cell bracket provided by the embodiment of the present utility model;

[0025] Figure 2 This is the second structural diagram of the battery cell bracket provided by the embodiment of the present utility model;

[0026] Figure 3 This is a schematic structural diagram of a battery unit provided by an embodiment of the present utility model;

[0027] Figure 4 This is an exploded view of a battery cell provided by an embodiment of the present utility model;

[0028] Figure 5 It is a schematic structural diagram of a battery pack provided by an embodiment of the present utility model;

[0029] Figure 6 This is a schematic structural diagram of a battery box provided by an embodiment of the present utility model;

[0030] Figure 7 It is a structural schematic diagram of a fastener provided in an embodiment of the present utility model.

[0031] Reference numerals:

[0032] 10-box body, 110-accommodating cavity, 120-connecting part, 130-connecting hole, 140-pressing part, 150-installing notch, 160-heat conduction notch, 170-flexible layer, 20-battery cell, 30-battery box, 310-vertical plate, 320-installing cavity, 330-installing hole, 40-fastener, 410-main body, 420-insertion part, 4210-first section, 4220-second section, 430-end head, 440-elastic part. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In the present invention, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0034] like Figures 1 to 4 As shown, an embodiment of the present invention provides a battery cell holder. The battery cell holder includes a box body 10. The box body 10 is configured with a receiving cavity 110 for mounting a battery cell 20. The box body 10 is configured with a connecting portion 120. The connecting portion 120 is configured to be detachably mounted to the battery box 30 via a fastener 40.

[0035] In this embodiment of the present invention, the battery cells 20 are installed in the housing 10 through the accommodating cavity 110. The housing 10 is then removably mounted within the battery case 30 using the connecting portion 120 of the housing 10 in conjunction with the fasteners 40. This eliminates the need for structural adhesive to bond the battery cells 20 to the battery case 30. When the battery pack requires repair, faulty battery cells can be removed individually and quickly, thus alleviating the technical issues of difficult and costly battery pack repairs.

[0036] It is understandable that the cell holder is used to install the cell unit 20, and the cell unit 20 is directly installed in the accommodating cavity 110 of the box body 10. The cell holder of the present utility model is particularly suitable for square batteries, then the box body 10 is a square box body 10, and the accommodating cavity 110 is a square cavity. When the box body 10 is installed in the battery box 30, the box body 10 can be arranged in sequence along the length direction inside the battery box 30. In other embodiments of the present utility model, the cell holder can also be applied to cylindrical batteries, then the box body 10 is a cylindrical box body 10, and the accommodating cavity 110 is a cylindrical cavity. When the box body 10 is installed in the battery box 30, the box body 10 can be arranged in sequence along the length direction inside the battery box 30.

[0037] In some embodiments, the housing 10 can be made of a plastic material. For example, the housing 10 can be formed by integral injection molding. Based on the shape, size, and dimensions of the battery cells 20, the housing 10 can be injection molded into a corresponding shape, size, and dimension. For example, if the battery cells 20 are square, the housing 10 can be integrally molded into a square shape using an injection molding machine.

[0038] In some embodiments, the housing 10 can be made of a metal material. For example, the housing 10 can be formed by sheet metal or die casting. Based on the shape, size, and dimensions of the battery cells 20, the housing 10 can be formed by sheet metal or die casting to a corresponding shape, size, and dimensions. For example, if the battery cells 20 are square, the housing 10 can be formed by sheet metal or die casting to a square shape.

[0039] In some embodiments, the connection portion 120 can be integrally formed with the housing 10. A connection hole 130 can be formed on the connection portion 120, and a corresponding mounting hole 330 can be formed on the battery box 30. Fasteners 40 are sequentially inserted through the connection hole 130 and the mounting hole 330 to achieve a detachable connection between the housing 10 and the battery box 30.

[0040] The fasteners 40 can be plastic spring nails, pressure-riveted spring nails, bolts, etc. This allows for quick assembly of the box body 10 and the battery box 30. For example, if the fasteners 40 are plastic spring nails, the plastic spring nails can be sequentially inserted through the connection holes 130 and the mounting holes 330 to achieve quick assembly of the box body 10 and the battery box 30.

[0041] like Figure 7 As shown, the fastener 40 may include a main body 410, an insert portion 420, and a head portion 430 disposed at each end of the main body 410. Both the main body 410 and the head portion 430 are cylindrical, with the diameter of the head portion 430 being larger than that of the main body 410. The insert portion 420 is arcuately shaped and comprises a first section 4210 and a second section 4220, which are located on opposite sides of the main body 410 away from the head portion 430. The first section 4210 and the second section 4220 have a first state and a second state. In the first state, the first section 4210 and the second section 4220 are unstressed. In this state, the first distance between the ends of the first section 4210 and the second section 4220 away from each other is greater than the width of the connecting hole 130 and the mounting hole 330. In the second state, the first section 4210 and the second section 4220 are squeezed and deformed by the wall surfaces of the connecting hole 130 and / or the mounting hole 330. At this time, the second distance between the first section 4210 and the second section 4220 at one end away from each other is equal to the width of the connecting hole 130 and the mounting hole 330. The main body 410 is sleeved with an elastic member 440.

[0042] Based on the structure of the fastener 40, the insertion portion 420 can be sequentially inserted through the connection hole 130 and the mounting hole 330 by holding the end portion 430. After the insertion portion 420 is completely inserted through the connection hole 130 and the mounting hole 330, the end portion 430 abuts against the upper surface of the box body 10, and the first section 4210 and the second section 4220 cooperate with the elastic member 440 to achieve a locking effect, thereby ensuring a reliable connection between the box body 10 and the battery box 30.

[0043] like Figure 1 As shown, in some embodiments, the box body 10 is configured with a pressing portion 140 protruding toward the interior of the box body 10. The pressing portion 140 is configured to abut against the battery cell 20 and elastically deform under the action of the battery cell 20.

[0044] The pressing portion 140 is provided on the box body 10 and is protruded toward the interior of the box body 10. When the battery cell 20 is installed in the accommodating cavity 110 of the box body 10, the side surface of the battery cell 20 can abut against the pressing portion 140. In addition, the battery cell 20 can also drive the pressing portion 140 to elastically deform. As a result, the pressing portion 140 can clamp and fix the battery cell 20 inside the box body 10, thereby preventing the battery cell 20 from moving around inside the box body 10, improving the reliability of the battery cell 20 fixation and the safety of the battery pack during use.

[0045] Since the pressing portion 140 is elastically deformable, the deformed pressing portion 140 can exert force on the cell 20, thereby ensuring reliable fixation of the cell 20. The pressing portion 140 elastically deforms in a direction away from the cell 20 under the action of the cell 20.

[0046] It is understood that when the battery cell 20 is installed in the receiving cavity 110 of the box body 10, the side surface of the battery cell 20 abuts against the pressing portion 140, causing the pressing portion 140 to elastically deform. When the battery cell 20 is removed from the receiving cavity 110 of the box body 10, the pressing portion 140 returns to its original state.

[0047] In some embodiments, the pressing portion 140 can be integrally formed with the box body 10. For example, the pressing portion 140 can be integrally injection molded with the box body 10; integrally die-casted with the box body 10; or integrally stamped with the box body 10. In other embodiments of the present invention, the pressing portion 140 can also be connected to the box body 10 by bonding, bolting, hot-melt connection, or other methods.

[0048] In some embodiments, the pressing portion 140 may be strip-shaped, the strip-shaped pressing portion 140 protrudes toward the interior of the box body 10 , and the strip-shaped pressing portion 140 extends a certain length along the height direction of the box body 10 .

[0049] In some embodiments, an arc-shaped pressing portion 140 can be provided on the inner surface of one side of the box body 10. The arc-shaped pressing portion 140 protrudes toward the accommodating cavity 110. At this time, one side of the battery cell 20 abuts against the inner surface of the box body 10, and the other side of the battery cell 20 abuts against the pressing portion 140, driving the pressing portion 140 to elastically deform. In this way, the battery cell 20 can be clamped between the pressing portion 140 and the inner surface of the box body 10, thereby preventing the battery cell 20 from moving inside the box body 10, improving the reliability of the battery cell 20 fixation and the safety of the battery pack during use.

[0050] In some embodiments, an arc-shaped pressing portion 140 can be provided on the inner surface of either opposite side of the box body 10. The two arc-shaped pressing portions 140 protrude toward each other. At this time, the opposite sides of the battery cell 20 respectively abut against the two pressing portions 140, driving the two pressing portions 140 to elastically deform. In this way, the battery cell 20 can be clamped between the two pressing portions 140, thereby preventing the battery cell 20 from moving within the box body 10, improving the reliability of the battery cell 20 fixation and the safety of the battery pack during use.

[0051] In some embodiments, a mounting notch 150 can be constructed on one side of the box body 10, and the pressing portion 140 can be disposed in the mounting notch 150. The pressing portion 140 protrudes toward the accommodating cavity 110. At this time, one side of the battery cell 20 abuts against the inner surface of the box body 10, and the other side of the battery cell 20 abuts against the pressing portion 140, driving the pressing portion 140 to elastically deform. In this way, the battery cell 20 can be clamped between the pressing portion 140 and the inner surface of the box body 10, thereby preventing the battery cell 20 from moving inside the box body 10, improving the reliability of the battery cell 20 fixation and the safety of the battery pack during use.

[0052] Please continue to refer to Figure 1 In some embodiments, mounting notches 150 are formed on either side of the box body 10 . Each mounting notch 150 is formed with a pressing portion 140 . The two pressing portions 140 are configured to abut against opposite sides of the battery cell 20 .

[0053] It is understood that the pressing portions 140 on opposite sides of the box body 10 are protruding toward each other. At this point, the opposing sides of the battery cell 20 abut against the two pressing portions 140, causing them to elastically deform. This clamps the battery cell 20 between the two pressing portions 140, preventing it from moving within the box body 10. This improves the reliability of the battery cell 20's fixation and the safety of the battery pack during use.

[0054] The mounting notch 150 may be square and extend along the height direction of the box body 10. The pressing portion 140 also extends along the height direction of the box body 10. The opposite ends of the pressing portion 140 are connected to the two ends of the mounting notch 150 respectively.

[0055] In some embodiments, the two mounting notches 150 are located on opposite sides of the box body 10 in the length direction.

[0056] In some embodiments, the pressing portion 140 includes one or more of an arc-shaped pressing portion, a serpentine-shaped pressing portion, and a zigzag-shaped pressing portion.

[0057] For example, the pressing portion 140 is configured to be arc-shaped. The arc-shaped pressing portion 140 protrudes toward the interior of the box body 10, so that after the battery cell 20 is installed in the accommodating cavity 110, the side surface of the battery cell 20 can abut against the arc-shaped protrusion of the pressing portion 140, causing the pressing portion 140 to elastically deform. In this way, the pressing portion 140 has the effect of clamping and fixing the battery cell 20.

[0058] For example, the pressing portion 140 is configured in a serpentine shape. The serpentine-shaped pressing portion 140 includes several protruding structures toward the interior of the box body 10. This allows the side surfaces of the battery cell 20 to abut against the protruding structures of the pressing portion 140 after the battery cell 20 is installed in the accommodating cavity 110, causing the pressing portion 140 to elastically deform. Thus, the pressing portion 140 clamps and secures the battery cell 20.

[0059] like Figure 2 As shown, in some embodiments, the bottom surface of the box body 10 is configured with a thermal conductive gap 160. A thermal conductive adhesive layer is provided in the thermal conductive gap 160. The thermal conductive adhesive layer is configured to connect the battery cell 20 and the bottom plate of the battery box 30.

[0060] Because thermally conductive gaps 160 are constructed on the bottom surface of the casing 10, thermally conductive adhesive can be applied to the inside of the battery case 30 before the casing 10 is installed in the battery box 30. Before the thermally conductive adhesive solidifies, the battery cells are installed in the casing 10. At this point, the thermally conductive adhesive fills the thermally conductive gaps 160. Once the thermally conductive adhesive solidifies to form a layer, it can then thermally connect the battery cells 20 to the bottom plate of the battery case 30.

[0061] It is understandable that the bottom plate of the battery box 30 is a liquid cooling plate, and the thermal conductive adhesive layer can transfer the heat generated by the battery cell 20 during operation to the liquid cooling plate, thereby achieving cooling of the battery cell 20.

[0062] The thermally conductive adhesive layer used to connect the battery cells 20 to the bottom plate of the battery case 30 can achieve a certain bonding effect. However, the bonding performance of thermally conductive adhesive is significantly different from that of structural adhesive, and is significantly lower than that of structural adhesive. Therefore, the thermally conductive adhesive layer primarily transfers heat from the battery cells 20 to the bottom plate. The thermally conductive adhesive layer does not hinder disassembly during battery cell removal.

[0063] Please continue to refer to Figure 1 In some embodiments, two opposite sides of the box body 10 are respectively provided with a connecting portion 120 extending away from each other, and each connecting portion 120 is configured with a connecting hole 130.

[0064] By providing a connecting portion 120 on opposite sides of the box body 10, each box body 10 has two fastening points, improving the stability and reliability of the connection between the box body 10 and the battery box 30. Furthermore, by providing the connecting portions 120 and the connecting holes 130 on opposite sides of the box body 10, the forces on the opposite sides of each box body 10 are balanced and uniform.

[0065] In some embodiments, the connection portions 120 located on opposite sides of the box body 10 are integrally formed with the box body 10 .

[0066] In some embodiments, the two connecting portions 120 are located on opposite sides of the box body 10 in the length direction.

[0067] like Figure 4 As shown, in some embodiments, the inner surfaces of the two opposite sides of the box body 10 are both provided with a flexible layer 170 . The flexible layer 170 is configured to abut against the side surfaces of the battery cell 20 .

[0068] The flexible layer 170 is in contact between the inner surface of the box body 10 and the side surface of the battery cell 20. The flexible layer 170 can provide a pre-tightening force for the installation of the battery cell 20, so that the battery cell 20 can be reliably installed in the box body 10.

[0069] The flexible layer 170 may be a silicone pad layer, a foam noodle layer, or the like.

[0070] In some embodiments, the two flexible layers 170 are located on opposite sides of the box body 10 in the thickness direction.

[0071] like Figure 3 and Figure 4 As shown, on the other hand, the embodiment of the present invention further provides a battery unit. The battery unit includes the battery holder and the battery cell 20 in the above embodiment. The battery cell 20 is installed in the receiving cavity 110 of the box body 10.

[0072] In this embodiment of the present invention, the battery cells 20 are installed in the housing 10 through the accommodating cavity 110. The housing 10 is removably mounted within the battery case 30 using the connection holes 130 on the connecting portion 120 of the housing 10 in conjunction with the fasteners 40. This eliminates the need for structural adhesive to bond the battery cells 20 to the battery case 30. When the battery pack requires repair, faulty battery cells can be removed individually and quickly, thus alleviating the technical issues of difficult and costly battery pack repairs.

[0073] It is understood that the battery unit serves as a basic structure installed in the battery box 30. When a cell 20 in the battery pack fails, the failed battery unit can be removed from the battery box 30 to achieve precise repair of the cell 20.

[0074] The cells 20 are installed in the battery box 30 via the casing 10, with each cell 20 corresponding to a corresponding casing 10. This ensures that the forces acting on each cell 20 are essentially the same, resulting in better force consistency across the cells 20. Furthermore, the one-to-one correspondence between cells 20 and casings 10 means that during maintenance and replacement, only the faulty cell 20 needs to be removed, while the remaining cells 20 can remain intact, improving maintenance efficiency and reducing difficulty.

[0075] like Figure 5 and Figure 6 As shown, in another aspect, an embodiment of the present invention further provides a battery pack. The battery pack includes a battery box 30 and the battery cells of the aforementioned embodiment. The battery box 30 has multiple battery cells detachably connected thereto.

[0076] In this embodiment of the present invention, the battery cells 20 are installed in the housing 10 through the accommodating cavity 110. The housing 10 is removably mounted within the battery case 30 using the connection holes 130 on the connecting portion 120 of the housing 10 in conjunction with the fasteners 40. This eliminates the need for structural adhesive to bond the battery cells 20 to the battery case 30. When the battery pack requires repair, faulty battery cells can be removed individually and quickly, thus alleviating the technical issues of difficult and costly battery pack repairs.

[0077] It is understood that the battery unit serves as a basic structure installed in the battery box 30. When a cell 20 in the battery pack fails, the failed battery unit can be removed from the battery box 30 to achieve precise repair of the cell 20.

[0078] The cells 20 are installed in the battery box 30 via the casing 10, with each cell 20 corresponding to a corresponding casing 10. This ensures that the forces acting on each cell 20 are essentially the same, resulting in better force consistency across the cells 20. Furthermore, the one-to-one correspondence between the cells 20 and the casing 10 reduces the mutual influence between the cells 20, allowing for better control of the cells 20. During maintenance and replacement, only the faulty cell 20 needs to be removed; the remaining cells 20 can remain intact, improving maintenance efficiency and reducing difficulty.

[0079] like Figure 6 As shown, in some embodiments, the battery box 30 is constructed with at least two vertical panels 310. A mounting cavity 320 is formed between each pair of adjacent vertical panels 310. The battery cells are disposed within the mounting cavity 320. Each vertical panel 310 is provided with a mounting hole 330. The connecting portion 120 overlaps the vertical panel 310, and the connecting hole 130 and the mounting hole 330 are detachably connected via a fastener 40.

[0080] It is understood that the vertical plate 310 serves as a structure for securing the battery cells. Mounting holes 330 are formed on the upper surface of the vertical plate 310. When the battery cells are installed in the mounting cavity 320, the connecting portion 120 of the housing 10 overlaps the vertical plate 310, and the connecting holes 130 on the connecting portion 120 align with the mounting holes 330 on the upper surface of the vertical plate 310. At this point, fasteners 40 are sequentially inserted through the connecting holes 130 and the mounting holes 330, securing the housing 10 and the vertical plate 310 to each other.

[0081] The height of the vertical plate 310 is smaller than that of the box body 10 , so that after the battery unit is placed in the installation cavity 320 , the connecting portion 120 can overlap the vertical plate 310 .

[0082] The vertical plate 310 is arranged along the height direction of the battery box 30 and also extends along the length direction of the battery box 30. A plurality of mounting holes 330 can be spaced apart along the length direction of the vertical plate 310. The plurality of mounting holes 330 located along the same length direction form a row of mounting holes 330 to connect multiple battery cells. A row of mounting holes 330 is constructed on the vertical plate 310 located near the side plate of the battery box 30. This vertical plate 310 only needs to connect to the connection portions 120 on one side of the multiple battery cells arranged in a row. Two rows of mounting holes 330 are constructed on the vertical plate 310 located away from the side plate of the battery box 30. This vertical plate 310 can connect to the connection portions 120 of two rows of battery cells.

[0083] Since the vertical plate 310 near the side panel of the battery box 30 only needs to be configured with one row of mounting holes 330, the vertical plate 310 away from the side panel of the battery box 30 needs to be configured with two rows of mounting holes 330, the width of the vertical plate 310 away from the side panel of the battery box 30 is greater than the width of the vertical plate 310 near the side panel of the battery box 30.

[0084] In some embodiments, the vertical plate 310 can be welded into the battery box 30 , or the vertical plate 310 can be bolted into the battery box 30 , or the vertical plate 310 can be integrally formed into the battery box 30 .

[0085] In some embodiments, at least two battery cells are disposed in each mounting cavity 320. Two adjacent boxes 10 are spaced apart by a gap D, satisfying the following: 0.1 mm ≤ D ≤ 1 mm.

[0086] The spacing between adjacent housings 10 facilitates installation and subsequent removal. It is understood that due to the spacing between adjacent housings 10, there is no interaction between the adjacent housings 10. When a battery cell needs to be removed, the battery cell can be removed from the battery case 30 by simply removing the fasteners 40 and overcoming a certain degree of adhesive force in the thermally conductive adhesive layer.

[0087] In some embodiments, the gap D between each two adjacent boxes 10 can be set to 0.1 mm, 0.5 mm, 1 mm, or any value therebetween.

[0088] It is understandable that when the gap between two adjacent box bodies 10 is less than 0.1 mm, the gap between the two box bodies 10 will be too small. When the manufacturing error exceeds 0.1 mm, the two box bodies 10 may form abutment. On the one hand, it will make the assembly of the battery cell inconvenient. On the other hand, when disassembling the battery cell, it may be necessary to overcome the force of the box bodies 10 on both sides on the battery cell, making disassembly more difficult. When the gap between two adjacent box bodies 10 is greater than 1 mm, the utilization rate of the internal space of the battery box 30 will decrease, and the energy density of the battery pack will be reduced. Therefore, setting the spacing between the box bodies 10 of two adjacent battery cells in the range of 0.1 mm to 1 mm can make the battery pack have a suitable energy density while facilitating the installation of the battery cells.

[0089] The above is a detailed introduction to the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of the present invention. At the same time, for those skilled in the art, based on the idea of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A battery cell bracket, characterized in that: include: The box body is constructed with a accommodating cavity for installing a battery cell. The box body is constructed with a connecting portion, which is configured to be detachably installed on the battery box through a fastener. The box body is constructed with a pressing portion protruding toward the inside of the box body, and the pressing portion is configured to abut the battery cell.

2. The battery cell support according to claim 1, characterized in that: Any two opposite sides of the box body are configured with mounting notches, and each mounting notch is configured with a pressing portion, and the pressing portion is configured to be elastically deformed under the action of the battery cell.

3. The battery cell support according to claim 1, characterized in that: The pressing portion includes one or more of an arc-shaped pressing portion, a serpentine-shaped pressing portion, and a sawtooth-shaped pressing portion.

4. The battery cell support according to any one of claims 1 to 3, characterized in that: The bottom surface of the box body is configured with a heat-conducting notch, a heat-conducting adhesive layer is provided in the heat-conducting notch, and the heat-conducting adhesive layer is configured to connect the battery cell and the bottom plate of the battery box.

5. The battery cell support according to any one of claims 1 to 3, characterized in that: Two opposite sides of the box body are respectively provided with a connecting portion extending in a direction away from each other, and each connecting portion is configured with a connecting hole.

6. The battery cell support according to any one of claims 1 to 3, characterized in that: The inner surfaces of the two opposite sides of the box body are both provided with flexible layers, and the flexible layers are configured to abut against the side surfaces of the battery cell.

7. A battery cell, characterized in that: include: The battery cell holder according to any one of claims 1 to 6; The battery cell is installed in the box body.

8. A battery pack, characterized in that: include: The battery cell according to claim 7; Battery box; Wherein, a plurality of battery units are detachably connected in the battery box.

9. The battery pack according to claim 8, characterized in that: At least two vertical plates are constructed in the battery box, and an installation cavity is formed between each two adjacent vertical plates. The battery unit is arranged in the installation cavity, wherein each vertical plate is constructed with a mounting hole, the connecting part is overlapped with the vertical plate, and the connecting hole of the connecting part is detachably connected to the mounting hole by a fastener.

10. The battery pack according to claim 9, characterized in that: At least two battery cells are provided in each installation cavity, wherein two adjacent boxes are spaced apart with a gap D satisfying the following relationship: 0.1 mm ≤ D ≤ 1 mm.

Images