Battery cell support and battery pack

Abstract

The utility model provides a battery cell support and a battery pack, the battery cell support is used for installing a battery cell, the battery cell support comprises a first support body, a second support body and a third support body, the first support body is provided with a first accommodating hole; the second frame body is arranged opposite to the first frame body, the second frame body is connected with the first frame body, a second accommodating hole communicated with the first accommodating hole is formed in the second frame body, and the battery cell is mounted in the first accommodating hole and the second accommodating hole; and the reinforcing piece is arranged in the first frame body and / or the second frame body and located on the outer side of the battery cell, and the strength of the reinforcing piece is larger than that of the first frame body and larger than that of the second frame body. According to the technical scheme of the invention, the problem that the bracket has a fracture risk in a mechanical reliability test in the prior art is effectively solved.

Description

Technical Field

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

[0002] A battery pack is used in a scooter or a balance car. The battery pack is a whole composed of multiple battery cells through a bracket, and the multiple battery cells are connected in series or in parallel with a conductive sheet. The bracket includes a first frame and a second frame that are mounted on both ends of the battery.

[0003] At present, the impact energy generated by mechanical reliability tests such as drops, collisions, and shocks is directly transmitted to the bracket. Strict tests can easily cause serious deformation or even breakage of the bracket, thereby affecting the normal operation of the battery cell. The related technology authorization announcement number CN220021372U discloses a cylindrical battery cell fixing structure with elastic parts. The bracket is made of pure plastic material. The bracket structure may break directly after multiple drops. Utility Model Content

[0004] The main purpose of the utility model is to provide a battery cell bracket and a battery pack to solve the problem of the bracket in the related art having the risk of breakage during mechanical reliability testing.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a battery cell bracket is provided for installing a battery cell, and the battery cell bracket includes: a first frame, on which a first accommodating hole is provided; a second frame, which is arranged opposite to the first frame and connected to the first frame, and on which a second accommodating hole connected to the first accommodating hole is provided, and the battery cell is installed in the first accommodating hole and the second accommodating hole; a reinforcement member, which is arranged in the first frame and / or the second frame and is located on the outside of the battery cell, and the strength of the reinforcement member is greater than the strength of the first frame and greater than the strength of the second frame.

[0006] Furthermore, the reinforcement member includes a reinforcement frame, and the reinforcement frame is embedded in the first frame body and / or the second frame body.

[0007] Furthermore, the first frame includes a frame and a plurality of partitions connected to the frame, the plurality of partitions are arranged at intervals along the width direction of the frame, the first frame also includes a plurality of connecting plates connected between two adjacent partitions, the plurality of connecting plates are arranged at intervals along the length direction of the frame, and the plurality of partitions, the plurality of connecting plates and part of the frame enclose a plurality of first accommodating holes.

[0008] Furthermore, a portion of the partition closest to the long side of the frame among the multiple partitions is connected to the long side of the frame, and a buffer hole is formed between the partition closest to the long side of the frame and the long side of the frame. The shape of the buffer hole includes polygonal, circular, elliptical or semicircular.

[0009] Furthermore, the partition closest to the long side of the frame among the plurality of partitions includes a first plate segment and a second plate segment, and the first plate segment and the second plate segment are connected to the long side of the frame at an angle.

[0010] Furthermore, the partition closest to the long side of the frame among the plurality of partitions further includes a third plate segment, and two ends of the third plate segment are respectively connected to the long side of the frame and the wide side of the frame.

[0011] Furthermore, the first frame also includes an axial limiter connected to the partition and / or the connecting plate, the axial limiter extends into the first accommodating hole along the radial direction of the first accommodating hole, and the axial limiter limits the axial displacement of the battery cell.

[0012] Furthermore, a mounting hole is provided at the connection between the partition and the connecting plate, and the axis of the mounting hole is parallel to the axis of the first accommodating hole; and / or a connecting hole is provided on the frame, and the axis of the connecting hole is perpendicular to the axis of the first accommodating hole.

[0013] Furthermore, the first frame also includes a radial limiter arranged in the first accommodating hole, the radial limiter extends along the axial direction of the first accommodating hole, and the radial limiter limits the radial displacement of the battery core; and / or the reinforcement is a metal reinforcement or a plastic reinforcement.

[0014] Furthermore, a relief recess is provided on one side of the first frame away from the second frame, and a conductive sheet is connected to the end of the battery cell, and the conductive sheet passes through the relief recess; and / or, the shape of the first accommodating hole and the shape of the second accommodating hole are both regular hexagons.

[0015] According to another aspect of the utility model, a battery pack is provided, including a battery cell holder and a battery cell mounted on the battery cell holder, wherein the battery cell holder is the above-mentioned battery cell holder.

[0016] By applying the technical solution of the utility model, the battery cell bracket is used to install the battery cell. The battery cell bracket includes: a first frame, a second frame and a reinforcement. A first receiving hole is provided on the first frame. The second frame is arranged opposite to the first frame, and the second frame is connected to the first frame. A second receiving hole connected to the first receiving hole is provided on the second frame, and the battery cell is installed in the first receiving hole and the second receiving hole. The reinforcement is arranged in the first frame and / or the second frame and is located on the outside of the battery cell, and the strength of the reinforcement is greater than the strength of the first frame and greater than the strength of the second frame. In this way, during the mechanical reliability test of the battery cell bracket, the setting of the reinforcement can increase the strength performance of the first frame and / or the second frame, can withstand the impact force of falling, collision, etc., reduce the risk of fracture of the battery cell bracket, and can ensure the normal operation of the battery cell. Therefore, the technical solution of the present application effectively solves the problem of the risk of fracture of the bracket in the mechanical reliability test in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a battery cell support according to the utility model is shown;

[0019] Figure 2 Shows Figure 1 A schematic diagram of the three-dimensional structure of the first frame body and the reinforcement member of the battery cell support;

[0020] Figure 3 Shows Figure 1 A partial cross-sectional schematic diagram of a first frame of a cell support after being cut along a length direction parallel to the first frame;

[0021] Figure 4 Shows Figure 1 A schematic diagram of the three-dimensional structure of the first frame of the battery support;

[0022] Figure 5 Shows Figure 4 An enlarged schematic diagram of the first frame A;

[0023] Figure 6 Shows Figure 1 A schematic cross-sectional view of the battery cell support after being cut along a height direction parallel to the first frame;

[0024] Figure 7 Shows the battery cell and Figure 1 A schematic diagram of the three-dimensional structure of the first frame of the battery cell support.

[0025] The above drawings include the following reference numerals:

[0026] 1. Battery cell;

[0027] 10. first frame; 11. first accommodating hole; 12. frame; 121. connecting hole; 13. partition; 131. first plate segment; 132. second plate segment; 133. third plate segment; 14. connecting plate; 141. mounting hole; 15. axial stopper; 16. radial stopper; 17. avoidance recess; 18. buffer hole;

[0028] 20. second frame; 21. second receiving hole;

[0029] 30. Reinforcement. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0033] like Figures 1 to 3 As shown, the present application provides a battery cell bracket, which is used to install the battery cell 1. The battery cell bracket includes: a first frame 10, a second frame 20 and a reinforcement 30. The first frame 10 is provided with a first receiving hole 11. The second frame 20 is arranged opposite to the first frame 10, and the second frame 20 is connected to the first frame 10. The second frame 20 is provided with a second receiving hole 21 connected to the first receiving hole 11, and the battery cell 1 is installed in the first receiving hole 11 and the second receiving hole 21. The reinforcement 30 is arranged in the first frame 10 and the second frame 20 and is located on the outside of the battery cell 1. The strength of the reinforcement 30 is greater than the strength of the first frame 10 and greater than the strength of the second frame 20.

[0034] By applying the technical solution of this embodiment, during the mechanical reliability test (such as falling, collision, impact) of the battery holder, the provision of the reinforcement member 30 can increase the strength performance of the first frame 10 and the second frame 20, and can withstand the impact force of falling, collision, etc., reduce the risk of fracture of the battery holder, and ensure the normal operation of the battery. Therefore, the technical solution of this embodiment effectively solves the problem of the risk of fracture of the holder in the mechanical reliability test in the related art.

[0035] like Figures 1 to 3 As shown, in order to facilitate processing and improve the overall strength of the first frame 10 and the second frame 20, the reinforcement member 30 includes a reinforcement frame, and the reinforcement frame is embedded in the first frame 10 and the second frame 20. In other embodiments, the reinforcement member further includes a reinforcement sheet.

[0036] Specifically, there are two reinforcement frames, which are respectively embedded in the first frame 10 and the second frame 20 by injection molding. During injection molding, four injection molding fixing holes are provided on the first frame 10 and the second frame 20, and the reinforcement frames are fixed by the four injection molding fixing holes, and then each reinforcement frame is respectively integrally injection molded with the first frame 10 and the second frame 20 to achieve processing.

[0037] Preferably, the reinforcement frame is a steel sheet with a thickness of 0.1 mm, and the first frame 10 and the second frame 20 are tightened by bolts to achieve the purpose of fixing the battery cell 1, which is a cylindrical battery cell.

[0038] like Figure 3 and Figure 4 As shown, the first frame 10 includes a frame 12 and a plurality of partitions 13 connected to the frame 12, the plurality of partitions 13 are arranged at intervals along the width direction of the frame 12, the first frame 10 also includes a plurality of connecting plates 14 connected between two adjacent partitions 13, the plurality of connecting plates 14 are arranged at intervals along the length direction of the frame 12, and the plurality of partitions 13, the plurality of connecting plates 14 and a part of the frame 12 enclose a plurality of first receiving holes 11. In this way, the plurality of partitions 13 are arranged at intervals along the width direction of the frame 12, the plurality of connecting plates 14 are arranged at intervals along the length direction of the frame 12, the space utilization rate inside the frame 12 is high, and the cells are arranged in multiple rows, so the heat dissipation effect is good.

[0039] It should be noted that the above-mentioned “plurality” means that the number is at least two. In this embodiment, the second frame 20 and the first frame 10 are symmetrical structures.

[0040] like Figure 3 and Figure 4As shown, a portion of the partition 13 closest to the long side of the frame 12 among the multiple partitions 13 is connected to the long side of the frame 12, and a buffer hole 18 is formed between the partition 13 closest to the long side of the frame 12 and the long side of the frame 12. The shape of the buffer hole 18 includes polygonal, circular, elliptical or semicircular. In this way, the buffer holes 18 are distributed around the first frame 10. When the battery pack is subjected to mechanical tests such as falling, collision, impact, etc., the buffer holes 18 can be deformed to absorb energy, thereby preventing the multiple partitions 13 from directly contacting the falling, collision, and impact points and being subjected to force. The buffer hole 18 can also be approximately circular or semi-open or semi-closed.

[0041] like Figure 3 and Figure 4 As shown, the partition 13 closest to the long side of the frame 12 among the multiple partitions 13 includes a first plate segment 131 and a second plate segment 132, and the first plate segment 131 and the second plate segment 132 are connected at an angle to the long side of the frame 12. The first plate segment 131 and the second plate segment 132 can support the long side of the frame 12 respectively, and when the battery pack is subjected to mechanical tests such as falling, collision, impact, etc., the strength performance of the frame 12 can be further improved, and it can withstand the impact force of falling, collision, etc.

[0042] like Figure 3 and Figure 4 As shown, the partition 13 closest to the long side of the frame 12 among the multiple partitions 13 further includes a third plate segment 133, and the two ends of the third plate segment 133 are respectively connected to the long side of the frame 12 and the wide side of the frame 12. The third plate segment 133 can support the long side and the wide side of the frame 12, and when the battery pack is subjected to mechanical tests such as falling, collision, impact, etc., it can further improve the strength performance of the frame 12 and can withstand the impact of falling, collision, etc.

[0043] like Figures 4 to 7 As shown, the first frame 10 further includes an axial stopper 15 connected to the partition 13 and the connecting plate 14, and the axial stopper 15 extends into the first receiving hole 11 along the radial direction of the first receiving hole 11, and the axial stopper 15 limits the axial displacement of the battery cell 1. In this way, the axial stopper 15 can also support the end surface of the battery cell 1, and the battery cell 1 can be stably located in the first receiving hole 11. The above-mentioned axial stopper 15 is preferably an axial stopper plate.

[0044] Specifically, there are multiple axial stoppers 15, and the multiple axial stoppers 15 are arranged at intervals along the circumference of the first accommodating hole 11. The multiple axial stoppers 15 can be 5 or 6.

[0045] like Figures 4 to 7As shown, in order to facilitate the placement of the temperature sensor and monitor the actual temperature value of the battery cell, a mounting hole 141 is provided at the connection between the partition 13 and the connecting plate 14, and the axis of the mounting hole 141 is parallel to the axis of the first receiving hole 11. In this way, the temperature sensor is installed in the mounting hole 141.

[0046] like Figures 1 to 4 As shown, a connection hole 121 is provided on the frame 12, and the axis of the connection hole 121 is perpendicular to the axis of the first receiving hole 11. In this way, the setting of the connection hole 121 facilitates the installation and fixation of the battery cell, or the connection with the handle connection part of the handle.

[0047] like Figures 4 to 7 As shown, the first frame 10 further includes a radial stopper 16 disposed in the first receiving hole 11, the radial stopper 16 extending along the axial direction of the first receiving hole 11, and the radial stopper 16 limits the radial displacement of the battery cell 1. In this way, the radial stopper 16 can also support the side of the battery cell 1, and the battery cell 1 can be stably located in the first receiving hole 11. The radial stopper 16 is preferably a radial stopper rib.

[0048] Specifically, a guiding inclined surface is provided on the radial limiting member 16 , which guides the battery core 1 when the battery core 1 is installed in the first accommodating hole 11 .

[0049] Specifically, there are multiple radial limiting members 16, and the multiple radial limiting members 16 are arranged at intervals along the circumference of the first receiving hole 11. The multiple radial limiting members 16 can be 5 or 6.

[0050] The reinforcement member 30 is a metal reinforcement member or a plastic reinforcement member.

[0051] like Figure 1 and Figure 7 As shown, a relief notch 17 is provided on the side of the first frame 10 facing away from the second frame 20, and a conductive sheet (not shown) is connected to the end of the battery cell 1, and the conductive sheet passes through the relief notch 17. The conductive sheet is a nickel sheet. In this way, when two battery cell holders are connected, the conductive sheet on the battery cell in one battery cell holder passes through the relief notch 17 and is connected to the conductive sheet on the battery cell in the other battery cell holder.

[0052] The shape of the first receiving hole 11 and the shape of the second receiving hole 21 in this embodiment are both regular hexagons. In this way, the arrangement space of the first receiving hole 11 and the second receiving hole 21 is large, the space utilization rate is low, and the space is more compact. The wall thickness of the regular hexagon is uniform, there is no sudden change in wall thickness, the strength is reliable, and it is not easy to break.

[0053] The present application also provides a battery pack, including a battery cell holder and a battery cell 1 mounted on the battery cell holder, wherein the battery cell holder is the above-mentioned battery cell holder. Since the above-mentioned battery cell holder can solve the problem of the risk of fracture of the holder in the mechanical reliability test in the related art, the battery pack including the battery cell holder can solve the same technical problem.

[0054] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0055] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0056] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0057] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A battery cell support for mounting a battery cell (1), characterized in that: The battery support comprises: A first frame (10), wherein the first frame (10) is provided with a first receiving hole (11); a second frame (20) arranged opposite to the first frame (10), and the second frame (20) is connected to the first frame (10), the second frame (20) is provided with a second receiving hole (21) communicating with the first receiving hole (11), and the battery cell (1) is installed in the first receiving hole (11) and the second receiving hole (21); A reinforcing member (30) is arranged in the first frame (10) and / or the second frame (20) and is located outside the battery core (1); the strength of the reinforcing member (30) is greater than the strength of the first frame (10) and greater than the strength of the second frame (20).

2. The battery cell support according to claim 1, characterized in that: The reinforcement member (30) comprises a reinforcement frame, and the reinforcement frame is embedded in the first frame (10) and / or the second frame (20).

3. The battery cell support according to claim 1, characterized in that: The first frame (10) comprises a frame (12) and a plurality of partitions (13) connected to the frame (12), wherein the plurality of partitions (13) are arranged at intervals along the width direction of the frame (12); the first frame (10) further comprises a plurality of connecting plates (14) connected between two adjacent partitions (13), wherein the plurality of connecting plates (14) are arranged at intervals along the length direction of the frame (12); the plurality of partitions (13), the plurality of connecting plates (14) and a portion of the frame (12) enclose a plurality of the first accommodating holes (11).

4. The battery cell support according to claim 3, characterized in that: A portion of the partition (13) closest to the long side of the frame (12) among the plurality of partitions (13) is connected to the long side of the frame (12), and a buffer hole (18) is formed between the partition (13) closest to the long side of the frame (12) and the long side of the frame (12), and the shape of the buffer hole (18) includes a polygon, a circle, an ellipse or a semicircle.

5. The battery cell support according to claim 3, characterized in that: The partition plate (13) closest to the long side of the frame (12) among the plurality of partition plates (13) comprises a first plate segment (131) and a second plate segment (132), wherein the first plate segment (131) and the second plate segment (132) are connected to the long side of the frame (12) at an angle.

6. The battery cell support according to claim 3, characterized in that: The partition plate (13) closest to the long side of the frame (12) among the plurality of partition plates (13) further comprises a third plate segment (133), and two ends of the third plate segment (133) are respectively connected to the long side of the frame (12) and the wide side of the frame (12).

7. The battery cell support according to claim 3, characterized in that: The first frame (10) further comprises an axial limiter (15) connected to the partition (13) and / or the connecting plate (14), wherein the axial limiter (15) extends into the first accommodating hole (11) along the radial direction of the first accommodating hole (11), and the axial limiter (15) limits the axial displacement of the battery cell (1).

8. The battery cell support according to claim 3, characterized in that: A mounting hole (141) is provided at the connection between the partition (13) and the connecting plate (14), and the axis of the mounting hole (141) is parallel to the axis of the first receiving hole (11); and / or a connecting hole (121) is provided on the frame (12), and the axis of the connecting hole (121) is perpendicular to the axis of the first receiving hole (11).

9. The battery cell support according to any one of claims 1 to 8, characterized in that: The first frame (10) further comprises a radial limiter (16) arranged in the first receiving hole (11), the radial limiter (16) extending along the axial direction of the first receiving hole (11), the radial limiter (16) limiting the radial displacement of the battery core (1); and / or the reinforcement (30) is a metal reinforcement or a plastic reinforcement.

10. The battery cell support according to any one of claims 1 to 8, characterized in that: A relief recess (17) is provided on a side of the first frame (10) facing away from the second frame (20); an end of the battery cell (1) is connected to a conductive sheet, and the conductive sheet passes through the relief recess (17); and / or the shape of the first accommodating hole (11) and the shape of the second accommodating hole (21) are both regular hexagons.

11. A battery pack, comprising a battery cell holder and a battery cell (1) mounted on the battery cell holder, characterized in that: The cell support is the cell support according to any one of claims 1 to 10.

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