Battery cell support, battery module and battery

Abstract

The utility model provides a battery cell bracket, a battery module and a battery, and relates to the technical field of batteries. The battery cell support comprises a body, a plurality of battery cell mounting holes are formed in the body, and the two ends of the body are configured to be in contact with the two opposite inner walls of the battery box respectively in the axial direction of the battery cell mounting holes. The two ends of the battery cell support are configured to be in contact with the two opposite inner walls of the battery box respectively, so that when the battery is stressed, a transmission path acts on the battery cell support from one side wall surface of the battery and then acts on the other side wall surface of the battery from the battery cell support, namely, a load does not act on the battery cell. Therefore, the load borne by the battery cell can be reduced, the battery cell is prevented from being damaged, and the reliability of the battery cell is effectively improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery cell bracket, a battery module and a battery. Background Art

[0002] The battery primarily consists of a battery box, a cell holder, a battery cell, and electrical components housed within the box. The cell holder secures the battery cell, while the electrical components electrically connect multiple cells. In related art, the primary forces acting on the battery are the vehicle's human body load and the seat support load, transmitted through the vehicle, the battery box's upper cover, and finally the battery cell. Alternatively, the transmission path is the vehicle, the battery's upper cover, the cell holder located on one side of the cell, and finally the battery cell.

[0003] In both stress-bearing modes, the battery cell needs to bear the load. However, the load threshold of the battery cell is relatively small. Therefore, when the load on the battery cell exceeds the load threshold, the battery cell is easily damaged and fails. Utility Model Content

[0004] The embodiments of the present application provide a battery cell holder, a battery module, and a battery, which can improve the reliability of the battery cell.

[0005] In a first aspect, an embodiment of the present application provides a battery cell holder, which includes a main body having a plurality of battery cell mounting holes arranged side by side, and along the axial direction of the battery cell mounting holes, two ends of the main body are configured to contact two opposite inner walls of the battery box respectively.

[0006] In one embodiment, the body has a first end surface along the axial direction of the battery cell mounting hole. The first end surface is provided with a mounting groove communicating with adjacent battery cell mounting holes. The mounting groove is configured to accommodate an electrical component electrically connected to the battery cell.

[0007] In one embodiment, the main body includes a plurality of mounting barrels arranged in sequence, the inner holes of the plurality of mounting barrels are battery cell mounting holes, and two adjacent mounting barrels are connected.

[0008] In one embodiment, a plurality of mounting tubes are arranged in an array, and the row direction and the column direction of the array are perpendicular.

[0009] In one embodiment, the mounting tubes in two adjacent rows are spaced apart, and the spacing between the mounting tubes in two adjacent rows is configured to accommodate the heat management plate.

[0010] In one embodiment, heat dissipation holes are provided on the wall of the mounting tube along the column direction, and the heat dissipation holes are connected to the battery cell mounting holes and to the outside of the mounting tube.

[0011] In one embodiment, the mounting tubes in two adjacent rows are staggered along the row direction.

[0012] In one embodiment, the battery cell support further includes a plurality of connecting plates, and the plurality of connecting plates connect two adjacent mounting cylinders.

[0013] In one embodiment, the plurality of battery cell mounting holes are distributed in a matrix.

[0014] In a second aspect, an embodiment of the present application provides a battery module, which includes a battery cell, a connecting bar and the aforementioned battery cell bracket; there are multiple battery cells, and the multiple battery cells are respectively located in multiple battery cell mounting holes; there are multiple connecting bars, and the multiple connecting bars electrically connect the multiple battery cells.

[0015] In a third aspect, an embodiment of the present application provides a battery, which includes a battery box and the aforementioned battery module; the battery box has an installation cavity; the battery module is arranged in the installation cavity; wherein the two ends of the body are respectively in contact with two opposite inner walls of the installation cavity.

[0016] Beneficial effects of the embodiments of the present application:

[0017] In the embodiments of the present application, by configuring the ends of the cell holder to contact two opposing inner walls of the battery case, when a load is applied to the battery, the load is transferred from one wall of the battery to the cell holder, and then from the cell holder to the other wall of the battery. In other words, the load does not act on the battery cell. This reduces the load on the battery cell, prevents damage to the cell, and effectively improves the reliability of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 Schematic diagram of the structure of the battery cell bracket provided in an embodiment of the present application;

[0020] Figure 2 This is a schematic structural diagram of another battery cell bracket provided in an embodiment of the present application;

[0021] Figure 3 1 is a schematic structural diagram of another battery cell bracket provided in an embodiment of the present application;

[0022] Figure 4 is a schematic structural diagram of a mounting tube provided in an embodiment of the present application;

[0023] Figure 5 is a top view of a cell support provided in an embodiment of the present application;

[0024] Figure 6 This is a schematic diagram of the cooperation between the battery cell bracket and the thermal management plate provided in an embodiment of the present application;

[0025] Figure 7 is a structural schematic diagram of a mounting tube from another perspective provided by an embodiment of the present application;

[0026] Figure 8 is a schematic structural diagram of a battery module provided in an embodiment of the present application;

[0027] Figure 9 It is a schematic structural diagram of a battery provided in an embodiment of the present application.

[0028] Description of reference numerals:

[0029] 001-battery cell bracket;

[0030] 011-body; 111-cell mounting hole; 112-first end surface; 113-mounting groove; 114-mounting cylinder; 1141-heat dissipation hole; 012-connecting plate;

[0031] 002-battery module; 021-battery cell;

[0032] 003-battery; 031-installation cavity; 032-battery box; 321-box cover; 322-box body; 033-liquid cooling plate. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0034] In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application and are not used to limit the present application. In the description of the present application, "multiple" means two or more, unless otherwise specifically defined.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0036] In the description of the embodiments of this application, words such as "example" or "for example" are used to indicate an example, illustration, or description. Any embodiment or design described as "for example" or "for example" in the embodiments of this application is not to be construed as being preferred or having more advantages than another embodiment or design. The use of words such as "example" or "for example" is intended to clearly present relative concepts.

[0037] To facilitate understanding of the solution of the present application, the spline curves and arrows used in the drawings are explained here: the components indicated by the spline curves without arrows are solid components, that is, components with solid structures; the components indicated by the spline curves with arrows are virtual components, that is, components without solid structures.

[0038] See also Figure 1 , Figure 1 FIG2 is a schematic diagram of the structure of a battery cell holder 001 provided in an embodiment of the present application. The embodiment of the present application provides a battery cell holder 001. The battery cell holder 001 includes a body 011. A plurality of battery cell mounting holes 111 are arranged side by side on the body 011. Along the axial direction of the battery cell mounting holes 111, the two ends of the body 011 are configured to contact two opposing inner walls of the battery box.

[0039] It can be understood that the battery cell 021 is located in the battery cell installation hole 111, and the connection row connecting the battery cells 021 in series or in parallel can be located at one end of the battery cell holder 001, or embedded in the end face of the battery cell holder 001 adjacent to the pole of the battery cell 021.

[0040] Exemplarily, the battery cell holder 001 is an injection molded part, specifically a plastic holder.

[0041] In addition, the two ends of the main body 011 may respectively contact the cover of the battery box and the bottom wall of the battery box, or may contact two opposite inner walls of the battery box.

[0042] Along the axis of the cell mounting hole 111, the body 011 has a first height dimension, and the distance between the two opposing inner walls of the battery box is a second height dimension. The first and second height dimensions can be equal, so that the ends of the body 011 just touch the two opposing inner walls of the battery box. Alternatively, the first height dimension can be greater than the second height dimension, so that the ends of the body 011 abut the two opposing inner walls of the battery box.

[0043] In this embodiment, by configuring the ends of the cell holder 001 to contact two opposing inner walls of the battery case, when a force is applied to the battery 003, the force is transferred from one side of the battery 003 to the cell holder 001, and then from the cell holder 001 to the other side of the battery 003. In other words, the load does not act on the battery cell 021. This reduces the load on the battery cell 021, prevents damage to the battery cell 021, and effectively improves the reliability of the battery cell 021.

[0044] Among them, the load mainly refers to the axial load of the battery cell 021.

[0045] See also Figure 2 , Figure 2 This is a schematic diagram of the structure of another battery cell holder 001 provided in an embodiment of the present application. In one embodiment, the body 011 has a first end surface 112 along the axial direction of the battery cell mounting holes 111. The first end surface 112 is provided with a mounting groove 113 that connects adjacent battery cell mounting holes 111. The mounting groove 113 is configured to accommodate electrical components electrically connected to the battery cell 021.

[0046] Optionally, the cell mounting hole 111 is a blind hole, and the electrode of the cell is disposed away from the bottom of the cell mounting hole 111. The first end surface 112 is disposed away from the bottom of the cell mounting hole 111.

[0047] Specifically, the mounting slot 113 is configured to at least accommodate a connection bar that electrically connects two battery cells 021. The mounting slot 113 may also be configured to accommodate a collection harness, such as a collection harness of a temperature sensor.

[0048] In this embodiment, by providing a mounting groove 113 for accommodating electrical components on the first end surface 112, on the one hand, the electrical components can be prevented from being squeezed by the battery cell holder 001 and the inner wall of the battery box, thereby improving the reliability of the electrical connection between the electrical components and the battery cells 021; on the other hand, the electrical components can be positioned by the mounting groove 113, thereby improving the operability of the electrical component installation and the stability of the electrical component position.

[0049] See also Figure 3 and Figure 4 , Figure 3 001 is a structural diagram of another battery cell bracket provided in an embodiment of the present application. Figure 4 1 is a schematic diagram of the structure of the mounting barrel 114 provided in an embodiment of the present application. In one embodiment, the body 011 includes a plurality of mounting barrels 114 arranged in sequence. The inner holes of the plurality of mounting barrels 114 are battery cell mounting holes 111. Two adjacent mounting barrels 114 are connected.

[0050] In this embodiment, by providing the main body 011 with multiple mounting tubes 114, the thickness of the portion of the main body 011 containing the battery cells 021 can be reduced, thereby facilitating heat dissipation from the battery cells 021 and improving heat dissipation efficiency. Furthermore, the material usage of the battery cell holder 001 can be reduced. This not only controls the material cost of the battery cell holder 001 but also reduces its weight, facilitating a lightweight design for the battery 003.

[0051] See also Figure 5 , Figure 5 This is a top view of a cell holder 001 provided in an embodiment of the present application. In one embodiment, multiple mounting barrels 114 are arranged in an array, with the row and column directions of the array perpendicular to each other. Specifically, the multiple mounting barrels 114 are divided into multiple mounting barrel 114 groups. Each mounting barrel 114 group includes multiple mounting barrels 114 arranged sequentially along a row direction, and multiple mounting barrel 114 groups are arranged sequentially along a column direction, wherein the row and column directions are perpendicular to the axial direction of the cell mounting hole 111.

[0052] The row direction is perpendicular to the axis of the mounting tube 114 , and the column direction is perpendicular to the axis of the mounting tube 114 and perpendicular to the row direction.

[0053] In this embodiment, through the above arrangement, the plurality of mounting tubes 114 are arranged in a regular pattern, which not only improves the space utilization, but also improves the heat dissipation uniformity of the battery cell 021 .

[0054] See also Figure 6 , Figure 6 Schematic diagram of the cooperation between the battery cell holder 001 and the thermal management plate provided in an embodiment of the present application. In one embodiment, the mounting tubes 114 of two adjacent rows are spaced apart. The spacing between the mounting tubes 114 of two adjacent rows is configured to accommodate the thermal management plate.

[0055] Specifically, the heat management plate is a serpentine liquid cooling plate, and part of the outer circumference of the mounting tube 114 is in contact with the heat management plate.

[0056] In this embodiment, by using the space between two adjacent rows of mounting tubes 114 to mount a heat management plate, the contact area between the battery cells 021 and the heat management plate can be increased, thereby improving the heat dissipation efficiency of the battery cells 021 .

[0057] See also Figure 7 , Figure 7 FIG1 is a schematic diagram of the structure of the mounting barrel 114 from another perspective provided in an embodiment of the present application. In one embodiment, heat dissipation holes 1141 are provided on the barrel wall of the mounting barrel 114 along the column direction. The heat dissipation holes 1141 connect the battery cell mounting holes 111 with the outside of the mounting barrel 114.

[0058] Specifically, each mounting tube 114 is provided with two heat dissipation holes 1141 , and the two heat dissipation holes 1141 of each mounting tube 114 are sequentially arranged along the column direction.

[0059] In this embodiment, by providing the heat dissipation holes 1141 , the battery cell 021 located in the battery cell mounting hole 111 can directly dissipate heat to the outside through the heat dissipation holes 1141 , thereby improving the heat dissipation efficiency of the battery cell 021 and further improving the reliability of the battery cell 021 .

[0060] In addition, the heat management plate can be thermally coupled to the shell of the battery cell 021 through the heat dissipation holes 1141, so that the battery cell 021 can directly exchange heat with the heat management plate, thereby shortening the heat exchange path and improving the heat exchange efficiency.

[0061] See also Figure 5 In one embodiment, the mounting tubes 114 in two adjacent rows are staggered along the row direction. Specifically, in two adjacent rows of mounting tubes 114, the axis of the mounting tubes 114 in one row is arranged opposite to the interval between two adjacent mounting tubes 114 in the other row.

[0062] In this embodiment, by staggering the mounting tubes 114 in two adjacent rows along the row direction, the spacing between the mounting tubes 114 in the column direction can be shortened, thereby making the layout of the mounting tubes 114 of the battery cells 021 more compact and optimizing space utilization. In this way, the energy density of the battery 003 using the battery cell holder 001 can be increased.

[0063] See also Figure 3 or Figure 5 In one embodiment, the battery cell holder 001 further includes a plurality of connecting plates 012 . The plurality of connecting plates 012 connect two adjacent mounting cylinders 114 .

[0064] Exemplarily, the connecting plate 012 and the mounting cylinder 114 are injection molded together.

[0065] The connecting plate 012 is located on one side of the mounting barrel 114 along the axial direction of the battery cell mounting hole 111 . Specifically, the connecting plate 012 is located on one side of the mounting barrel 114 close to the bottom of the battery cell mounting hole 111 .

[0066] In this embodiment, two adjacent connecting tubes are connected by providing a connecting plate 012. On the one hand, the integrity of the battery cell holder 001 can be ensured, and the overall strength of the battery cell holder 001 can be ensured, thereby improving the carrying capacity of the battery cell holder 001; on the other hand, the structural strength of the battery cell holder 001 can be improved, so that the load on the mounting tube 114 is decomposed through the connecting plate 012, thereby improving the stress state of the battery cell holder 001.

[0067] See also Figure 1 or Figure 2 or Figure 3 In one embodiment, the plurality of battery cell mounting holes 111 are distributed in a matrix.

[0068] In this embodiment, the above arrangement allows the battery cell mounting holes 111 to be arranged in a regular pattern, thereby not only improving space utilization but also improving heat dissipation uniformity of the battery cells 021 .

[0069] See also Figure 8 , Figure 8 002 is a schematic diagram of the structure of the battery module 002 provided in the embodiment of the present application. Accordingly, the embodiment of the present application provides a battery module 002. The battery module 002 includes a battery cell 021, a connecting bar ( Figure 8 The connecting bars are not shown in the figure) and the aforementioned cell holder 001. There are multiple cells 021, and the multiple cells 021 are respectively located in the multiple cell mounting holes 111. There are multiple connecting bars, and the multiple connecting bars electrically connect the multiple cells 021.

[0070] Specifically, the plurality of battery cells 021 may be connected in series, in parallel, or some may be connected in series and others in parallel.

[0071] It can be understood that the height of the battery cell 021 is not higher than the height of the battery cell mounting hole 111. Specifically, the height of the battery cell 021 is lower than the height of the battery cell mounting hole 111, so as to reserve space for installing the connecting row between the opening of the battery cell mounting hole 111 and the battery cell 021.

[0072] In this embodiment, by adopting the aforementioned battery cell holder 001, when the battery 003 is subjected to force, the load transfer path is from one side wall of the battery 003 to the battery cell holder 001, and then from the battery cell holder 001 to the other side wall of the battery 003, that is, the load does not act on the battery cell 021, thereby reducing the load borne by the battery cell 021, avoiding damage to the battery cell 021, and effectively improving the reliability of the battery cell 021.

[0073] See also Figure 9 , Figure 9 Schematic diagram of the structure of battery 003 provided in an embodiment of the present application. Accordingly, an embodiment of the present application provides a battery 003. Battery 003 includes a battery case 032 and the aforementioned battery module 002. Battery case 032 has a mounting cavity 031. Battery module 002 is disposed within mounting cavity 031. The two ends of body 011 contact the two opposing inner walls of mounting cavity 031.

[0074] It can be understood that the battery box 032 includes a box cover 321 and a box body 322 , and the box cover 321 and the box body 322 are covered to define the installation cavity 031 .

[0075] In addition, the battery 003 further includes a liquid cooling plate 033. Specifically, along the column direction, a liquid cooling plate 033 is provided on both sides of the battery holder 001; and a liquid cooling plate 033 is provided between two adjacent mounting tube groups.

[0076] Exemplarily, the axial direction of the battery cell 021 is perpendicular to the box cover 321. Correspondingly, both ends of the battery cell holder 001 are in contact with the box cover 321 and the bottom wall of the box body 322 respectively.

[0077] Specifically, the inner walls of the mounting cavity 031 that contact the ends of the cell holder 001 are the first and second inner walls. The distance between the first and second inner walls is L. Along the axial direction of the cell mounting hole 111, the height of the cell holder 001 is H, satisfying the following relationship: L < H ≤ L + 2 mm. This allows the box cover 321, cell holder 001, and box body 322 to be pressed together, increasing the contact area between the cell holder 001 and the bottom walls of the box cover 321 and box body 322, ensuring uniform force distribution among all three.

[0078] In this embodiment, by adopting the aforementioned battery module 002, when the battery 003 is subjected to force, the load transfer path is made to act from one side wall of the battery 003 to the battery cell holder 001, and then from the battery cell holder 001 to the other side wall of the battery 003, that is, the load does not act on the battery cell 021, thereby reducing the load borne by the battery cell 021 and avoiding damage to the battery cell 021, thereby effectively improving the reliability of the battery 003.

[0079] The above is a detailed introduction to the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of the present application. At the same time, for those skilled in the art, based on the ideas of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A battery cell bracket, characterized in that: The battery pack comprises a main body, on which a plurality of battery cell mounting holes are arranged side by side. Along the axial direction of the battery cell mounting holes, two ends of the main body are configured to contact two opposite inner walls of the battery box respectively.

2. The battery cell support according to claim 1, characterized in that: The body has a first end surface along the axial direction of the battery cell mounting hole. The first end surface is provided with a mounting groove communicating with adjacent battery cell mounting holes. The mounting groove is configured to accommodate an electrical component electrically connected to the battery cell.

3. The battery cell support according to claim 1, characterized in that: The main body includes a plurality of mounting cylinders arranged in sequence, the inner holes of the plurality of mounting cylinders are the battery core mounting holes, and two adjacent mounting cylinders are connected.

4. The battery cell support according to claim 3, characterized in that: The plurality of mounting tubes are arranged in an array, and the row direction and the column direction of the array are perpendicular.

5. The battery cell support according to claim 4, characterized in that: The mounting tubes in two adjacent rows are spaced apart, and the spacing between the mounting tubes in two adjacent rows is configured to accommodate a heat management plate.

6. The battery cell support according to claim 5, characterized in that: Along the column direction, heat dissipation holes are provided on the wall of the installation tube, and the heat dissipation holes are connected to the battery cell installation holes and the outside of the installation tube.

7. The battery cell support according to any one of claims 4 to 6, characterized in that: The mounting tubes in two adjacent rows are staggered along the row direction.

8. The battery cell support according to any one of claims 3 to 6, characterized in that: The battery cell support further includes a plurality of connecting plates, and the plurality of connecting plates connect two adjacent mounting tubes.

9. The battery cell support according to any one of claims 1 to 6, characterized in that: The multiple battery cell mounting holes are distributed in a matrix.

10. A battery module, characterized in that: include: Multiple battery cells; a plurality of connecting bars for electrically connecting the plurality of battery cells; And, in the battery cell holder according to any one of claims 1 to 9, the plurality of battery cells are respectively located in the plurality of battery cell mounting holes.

11. A battery, characterized in that: include: a battery box having a mounting cavity; and, the battery module according to claim 10, disposed in the mounting cavity; Wherein, two ends of the body are in contact with two opposite inner walls of the installation cavity respectively.

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