Battery cell support and battery pack

Abstract

The invention provides a battery cell bracket and a battery pack. The battery cell support comprises a support body, the support body is provided with a battery cell installation cavity and a circuit board installation cavity, the battery cell installation cavity is used for installing a battery cell, the circuit board installation cavity is used for installing a circuit board, and the circuit board installation cavity is located on one side of the battery cell installation cavity; the side wall of one side, far away from the battery cell mounting cavity, of the circuit board mounting cavity is the protection plate, and the protection plate and the bracket body are integrally formed; the projection of the protection plate in the plane where the circuit board is located is at least partially overlapped with the circuit board. An operation window is formed in the protection plate so as to operate the circuit board, the bracket body comprises a first sub-bracket body and a second sub-bracket body, and the first sub-bracket body and the second sub-bracket body jointly define a battery cell mounting cavity and a circuit board mounting cavity; and the battery cell mounting cavity and the circuit board mounting cavity are arranged along a direction perpendicular to the first direction and the second direction. The invention solves the problem of high assembly difficulty caused by complex structure of the battery cell bracket in the prior art.

Description

[0001] This application is a divisional application of the invention patent with application date of January 7, 2025, application number 202510021745.4, and invention name “Battery Cell Holder and Battery Pack”. Technical Field

[0002] The present invention relates to the field of new energy technology, and in particular to a battery cell bracket and a battery pack. Background Art

[0003] In the field of two-wheeled vehicle battery packs, the outer periphery of the cell holder is usually provided with a shell before being placed in the battery compartment. When a soft shell is selected, the circuit board usually needs to be provided with an additional protective structure on the cell holder to prevent damage to the circuit board from external forces during transportation.

[0004] The additional protective structure not only needs to be installed separately, which is inconvenient to operate, but also has certain requirements for the assembly process. If the operator is not skilled, it is easy to affect the product yield due to unqualified assembly.

[0005] In the prior art, the patent with publication number CN 211555993 U provides a bar-shaped battery pack, which includes a cell holder, multiple cylindrical cells, an electrode sheet group, an adapter plate and lead wires, wherein the cell holder is approximately a rectangular parallelepiped structure, a cell mounting hole for accommodating the cell is provided on the motor holder, and an electrode sheet group is provided on opposite sides of the cell holder. After the cell is installed in place, the two ends of the multiple cells are respectively connected to the electrode sheet group, and the lead wires are connected to the adapter plate, which is provided on the side of the cell holder where the electrode sheet group is not provided. Therefore, this solution also fails to effectively protect the adapter plate.

[0006] Therefore, existing battery packs and cell holders still have problems such as high operation complexity, poor product consistency, low fault tolerance, large space occupation, many parts, heavy weight, and inability to effectively protect the circuit structure. Summary of the invention

[0007] In view of this, an object of the present invention is to provide a battery cell holder and a battery pack.

[0008] In order to achieve the above purpose, the technical solution provided by an embodiment of the present invention is as follows:

[0009] A battery cell bracket, comprising: a bracket body having a battery cell installation cavity and a circuit board installation cavity. The battery cell installation cavity is used for installing a battery cell, and the circuit board installation cavity is used for installing a circuit board. The circuit board installation cavity is located on one side of the battery cell installation cavity; a protection board, the side wall of the circuit board installation cavity away from the battery cell installation cavity is the protection board, and the protection board is integrally formed with the bracket body; the projection of the protection board in the plane where the circuit board is located overlaps at least partially with the circuit board; the protection board is formed with an operation window for performing operation behaviors on the circuit board; the bracket body includes a first sub-bracket body and a second sub-bracket body, and the first sub-bracket body and the second sub-bracket body jointly enclose the battery cell installation cavity and the circuit board installation cavity; the first sub-bracket body and the second sub-bracket body are spliced together along a first direction, a second direction is perpendicular to the first direction, the first direction is the axial direction of the battery cell, and the second direction is the length direction of the battery cell bracket; the battery cell installation cavity and the circuit board installation cavity are arranged in a direction perpendicular to the first direction and the second direction. By arranging the battery cell installation cavity and the circuit board installation cavity on the bracket body, and setting one side of the circuit board installation cavity as the protection board and integrally forming it with the bracket body, the structure of the battery cell bracket can be simplified, the production process can be reduced, the structure of the circuit board installation cavity can be effectively utilized, and the disadvantages of large space occupation and inconvenient operation caused by additionally setting a protection structure in the prior art can be avoided. Moreover, the first sub-bracket body and the second sub-bracket body are installed along the first direction, which can reduce the installation difficulty, and the arrangement of the battery cell installation cavity and the circuit board installation cavity can make more reasonable use of the structural space of the battery cell bracket. At the same time, the protection board overlaps partially with the circuit board, so as to protect the circuit board when the circuit board installation cavity is subjected to external force. The setting of the operation window can enable relevant operations on the circuit board without disassembling the protection board, and the operations include but are not limited to: fixing, burning, soldering components on the circuit board, or repairing the circuit and components on the circuit board. In addition, since the protection board in the present invention is integrally formed with the bracket body, secondary installation is not required, which greatly reduces the assembly difficulty and significantly improves the product consistency.

[0010] Further, the protection board includes at least one first sub-protection board and at least one second sub-protection board; the first sub-bracket body is integrally formed with the first sub-protection board; the second sub-bracket body is integrally formed with the second sub-protection board. By setting the bracket body as the first sub-bracket body and the second sub-bracket body, the production of the two sub-bracket bodies can be carried out simultaneously during processing. After processing, the first sub-bracket body and the second sub-bracket body are assembled together so that the assembled bracket body and the protection board jointly form the battery cell installation cavity and the circuit board installation cavity, thereby realizing the accommodation of the battery cell and the circuit board.

[0011] Further, the protection board is formed with an operation window including any one or any combination of the following: notches on at least one first sub - protection board and / or at least one second sub - protection board, notches formed by the spaced arrangement of adjacent first sub - protection boards and / or adjacent second sub - protection boards, and notches formed by the spaced arrangement of the first sub - protection board and the second sub - protection board. Operation windows of various sizes are formed through various combination methods to avoid various components with different sizes on the circuit board.

[0012] Further, the first sub - protection board and the second sub - protection board respectively extend towards each other along the first direction. During installation, the first sub - bracket body and the second sub - bracket body approach each other along the first direction to form a complete battery cell installation cavity and a circuit board installation cavity. The battery cell bracket in the present invention has the characteristics of simple structure and convenient disassembly and assembly.

[0013] Further, the protection board includes a plurality of first sub - protection boards and a plurality of second sub - protection boards; the plurality of first sub - protection boards are arranged at intervals along the second direction, the plurality of second sub - protection boards are arranged at intervals along the second direction, and the plurality of first sub - protection boards and the plurality of second sub - protection boards are arranged at intervals along the first direction to form an operation window in combination; both the first direction and the second direction are located in the plane where the circuit board is located. By providing a plurality of first sub - protection boards and a plurality of second sub - protection boards, different - sized and - shaped operation windows can be formed by adjusting the sizes and positions of the plurality of first sub - protection boards and the plurality of second sub - protection boards according to actual needs, so as to meet the requirement of avoiding the electronic components on the circuit board.

[0014] Further, the battery cell bracket further includes a support structure, which is formed on the side of the battery cell installation cavity close to the circuit board installation cavity, and the side of the support structure facing the circuit board installation cavity provides a support surface for supporting the circuit board. The circuit board is supported by the support structure to prevent the circuit board from shaking in the circuit board installation cavity, improving the installation stability and reliability of the circuit board. At the same time, forming the support structure on one side of the battery cell installation cavity can reasonably utilize the space inside the bracket body and improve the compactness of the battery cell bracket.

[0015] Further, the battery cell bracket includes an installation cabin structure, and a plurality of installation cabin structures are arranged in the battery cell installation cavity; the support surface includes a first support surface, the support structure includes the outer peripheral surfaces of at least one installation cabin structure adjacent to the circuit board installation cavity, and at least one outer peripheral surface forms at least one first support surface, and all the first support surfaces are coplanarly arranged. By providing a plurality of installation cabin structures in the battery cell installation cavity, each installation cabin can correspond to a battery cell, thereby accommodating and limiting a plurality of battery cells, and the first support surface is attached to the bottom surface of the circuit board to achieve the support of the circuit board.

[0016] Furthermore, the support structure further includes support columns. One end of each support column is connected to the junction of adjacent installation cabin structures, and the other end of each support column extends into the circuit board installation cavity and forms a second support surface, which is coplanar with the first support surface. By providing the support columns, the circuit board is supported by the second support surface on the support columns. The second support surface and the first support surface are arranged coplanarly, and both the second support surface and the first support surface are in surface contact with the circuit board surface, thereby providing stable support for the circuit board and ensuring the fixing reliability of the circuit board.

[0017] Furthermore, the support columns are provided with fixing holes so that the circuit board can be connected to the fixing holes through fasteners. By providing fixing holes on the support columns, the fasteners pass through the circuit board and cooperate with the fixing holes, thereby realizing the fixing of the circuit board in the circuit board installation cavity and avoiding the movement of the circuit board caused by the shaking of the battery pack.

[0018] Furthermore, the battery cell bracket further includes a wire management structure, which is arranged on the bracket body and is located on one side of the circuit board installation cavity. By providing the wire management structure, the wire harness connected to the circuit board can be sorted out to ensure clear wiring.

[0019] Furthermore, the surface of the bracket body also has a circuit board insertion and extraction port communicating with the circuit board installation cavity. By providing the circuit board insertion and extraction port, it is convenient to install the circuit board through the circuit board insertion and extraction port. The circuit board can extend into or be pulled out of the circuit board installation cavity through the circuit board insertion and extraction port without disassembling the entire bracket body, and the operation is simple.

[0020] Furthermore, an insertion port is provided at one end of the protection board close to the circuit board insertion and extraction port. The battery cell bracket further includes a wire management structure, which is arranged at the insertion port. By providing the insertion port on the protection board, when the circuit board is installed in place, the wire management structure is inserted through the insertion port, thereby limiting and fixing the wire harness of the circuit board.

[0021] The present invention also provides a battery pack, including: battery cells; a circuit board; a battery cell bracket, where the battery cell bracket is the above-mentioned battery cell bracket, the battery cells are installed in the installation cabin structure of the bracket body of the battery cell bracket, the circuit board is accommodated in the circuit board installation cavity of the bracket body; and a housing for covering the battery cell bracket. The housing covers the battery cell bracket to provide protection for the battery cell bracket.

[0022] Furthermore, the housing is a soft housing, and the soft housing is selected from any one of the following: PVC film, PE, PET.

[0023] The present invention has the following beneficial effects: By providing a battery cell installation cavity and a circuit board installation cavity on the bracket body, and setting one side of the circuit board installation cavity as a protection board and integrally molding it with the bracket body, the structure of the battery cell bracket can be simplified, the production process can be reduced, the structure of the circuit board installation cavity can be effectively utilized, and the disadvantages of large space occupation and inconvenient operation caused by additionally setting a protection structure in the prior art can be avoided. At the same time, the protection board overlaps with part of the circuit board, so as to protect the circuit board when the circuit board installation cavity is subjected to external force. The setting of the operation window can enable relevant operations on the circuit board without removing the protection board, and the operations include but are not limited to: fixing, burning, soldering components on the circuit board, or repairing the circuit and components on the circuit board. In addition, since the protection board in the present invention is integrally molded with the bracket body, secondary installation is not required, the assembly difficulty is greatly reduced, and the product consistency is greatly improved. The present invention solves the problem of high assembly difficulty caused by the complex structure of the battery cell bracket in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 Schematic diagram of the structure of a battery pack provided by a specific embodiment of the present invention;

[0026] Figure 2 Exploded view of a battery pack provided by a specific embodiment of the present invention;

[0027] Figure 3 Schematic diagram of the structure of two sub-bracket bodies provided by a specific embodiment of the present invention;

[0028] Figure 4 Schematic diagram of the structure of a battery pack without a housing provided by a specific embodiment of the present invention;

[0029] Figure 5 Schematic diagram of the structure of a sub-bracket body from one angle provided by a specific embodiment of the present invention;

[0030] Figure 6 Schematic diagram of the structure of the bracket body with an operation window provided by a specific embodiment of the present invention;

[0031] Figure 7 Schematic diagram of the structure of the bracket body with an operation window provided by another specific embodiment of the present invention.

[0032] Among them, the above-mentioned drawings include the following reference numerals:

[0033] 10. Bracket body; 101. First sub-bracket body; 102. Second sub-bracket body; 11. Battery cell installation cavity; 111. Installation cabin structure; 12. First side; 13. Second side; 14. Protection board; 141. Operation window; 142. Plug interface; 143. First sub-protection board; 144. Second sub-protection board; 15. Circuit board installation cavity; 16. Circuit board plug-in and unplugging port; 17. Third side; 18. Fourth side; 20. Support structure; 21. First support surface; 22. Support column; 221. Second support surface; 30. Wire management structure; 40. Battery cell; 50. Circuit board; 60. Outer shell; 61. First board structure; 62. Second board structure; 63. Third board structure; 100. Connecting piece; 110. Wiring harness; 120. First mounting board; 121. Avoidance hole; 130. Second mounting board; 140. Fastener. Detailed implementation manners

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0036] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0037] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, or the orientation or positional relationships when the product of this application is normally placed, or the orientation or positional relationships commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0038] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise clearly defined and limited, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0039] In the description of the embodiments of the present invention, it should also be noted that the terms "first", "second", etc. used herein do not particularly refer to the order or sequence, nor are they used to limit the present case. They are only used to distinguish components or operations described with the same technical terms.

[0040] It should be noted that, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0041] Next, the technical solutions in the present invention will be described with reference to the accompanying drawings.

[0042] In order to solve the problem that the structure of the cell bracket in the prior art is complex and the assembly difficulty is relatively high, the present invention provides a cell bracket and a battery pack.

[0043] In some embodiments, as Figures 1 to 5 shown, the battery pack includes a cell bracket, a cell 40, a circuit board 50, and a housing 60. The cell bracket is provided with a cell mounting cavity 11 and a circuit board mounting cavity 15 to respectively accommodate the cell 40 and the circuit board 50. The housing 60 is disposed outside the cell bracket to wrap the cell bracket.

[0044] Next, the cell bracket and the battery pack will be described in detail.

[0045] In some embodiments, as Figures 1 to 5As shown, the battery cell bracket includes a bracket body 10 and a protection board 14. The bracket body 10 has a battery cell installation cavity 11 and a circuit board installation cavity 15. The battery cell installation cavity 11 is used for installing the battery cell 40, and the circuit board installation cavity 15 is used for installing the circuit board 50. The circuit board installation cavity 15 is located on one side of the battery cell installation cavity 11. The side wall of the circuit board installation cavity 15 away from the battery cell installation cavity 11 is the protection board 14, and the protection board 14 is integrally formed with the bracket body 10. The projection of the protection board 14 in the plane where the circuit board 50 is located overlaps at least partially with the circuit board 50. The protection board 14 is formed with an operation window 141 for performing operation actions on the circuit board 50; the bracket body 10 includes a first sub-bracket body 101 and a second sub-bracket body 102. The first sub-bracket body 101 and the second sub-bracket body 102 jointly enclose the battery cell installation cavity 11 and the circuit board installation cavity 15; the first sub-bracket body 101 and the second sub-bracket body 102 are spliced together along a first direction, a second direction is perpendicular to the first direction, the first direction is the axial direction of the battery cell 40, and the second direction is the length direction of the battery cell bracket; the battery cell installation cavity 11 and the circuit board installation cavity 15 are arranged in a direction perpendicular to the first direction and the second direction.

[0046] By setting the battery cell installation cavity 11 and the circuit board installation cavity 15 on the bracket body 10, and setting one side of the circuit board installation cavity 15 as the protection board 14 and integrally forming it with the bracket body 10, the structure of the battery cell bracket can be simplified, the production process can be reduced, the structure of the circuit board installation cavity 15 can be effectively utilized, and the disadvantages of large space occupation and inconvenient operation caused by additionally setting a protection structure in the prior art can be avoided. Moreover, the first sub-bracket body 101 and the second sub-bracket body 102 being installed along the first direction can reduce the installation difficulty. The setting method of the battery cell installation cavity 11 and the circuit board installation cavity 15 can make more reasonable use of the structural space of the battery cell bracket. At the same time, the protection board 14 partially overlaps with the circuit board 50, so as to protect the circuit board 50 when the circuit board installation cavity 15 is subjected to external forces. The setting of the operation window 141 can perform relevant operations on the circuit board 50 without disassembling the protection board 14. The operations include but are not limited to: fixing, burning, soldering components on the circuit board 50, or repairing the circuit and components on the circuit board 50. In addition, since the protection board 14 in the present invention is integrally formed with the bracket body 10, there is no need for secondary installation, which greatly reduces the assembly difficulty and significantly improves the product consistency.

[0047] In some embodiments, such as Figures 3 to 5As shown, for the convenience of production and assembly, the protection plate 14 includes at least one first sub-protection plate 143 and at least one second sub-protection plate 144. The first sub-bracket body 101 is integrally formed with the first sub-protection plate 143. The second sub-bracket body 102 is integrally formed with the second sub-protection plate 144. By setting the bracket body 10 into the first sub-bracket body 101 and the second sub-bracket body 102, the production of the two sub-bracket bodies can be carried out simultaneously during processing. After processing, the first sub-bracket body 101 and the second sub-bracket body 102 are assembled together so that the assembled bracket body 10 and the protection plate 14 jointly form the battery cell installation cavity 11 and the circuit board installation cavity 15, thereby realizing the accommodation of the battery cell 40 and the circuit board 50.

[0048] It should be noted that, in addition to the way shown in the figure, the number and splicing method of the sub-bracket bodies actually have various deformation methods. For example, the sub-bracket bodies can also be three or more, and then sequentially spliced together along the length direction of the battery cell bracket. As long as it is ensured that the sub-protection plate is integrally formed with the sub-bracket body, the technical problems to be solved by the present invention can be solved. Therefore, Figures 1 to 5 only a preferred embodiment is provided, but it does not exclude the deformation methods of other embodiments that can achieve the same effect.

[0049] Of course, in another embodiment not shown in the figure, the bracket body 10 can also be split into two upper and lower sub-bracket bodies. The lower sub-bracket body is used to provide the battery cell installation cavity 11, and the upper sub-bracket body is integrally formed with the protection plate 14 and provides the circuit board installation cavity 15. A complete battery cell bracket is obtained by splicing the two upper and lower sub-bracket bodies. Since there are many variable ways, they will not be listed one by one here.

[0050] In some embodiments, as Figures 2 to 6 shown, since the battery cell bracket is formed by splicing the first sub-bracket body 101 and the second sub-bracket body 102, the first sub-bracket body 101 and the second sub-bracket body 102 respectively provide half of the battery cell installation cavity 11 and half of the circuit board installation cavity 15. When the first sub-bracket body 101 and the second sub-bracket body 102 are spliced together, they can jointly enclose the entire battery cell installation cavity 11 and the circuit board installation cavity 15 with the protection plate 14. Separately producing the first sub-bracket body 101 and the second sub-bracket body 102 not only facilitates processing, effectively reduces the process difficulty, but also makes the battery cell bracket have the advantage of being easy to assemble.

[0051] In some embodiments, the first sub-bracket body 101 and the second sub-bracket body 102 are spliced together along the first direction X, and the first sub-protection plate 143 and the second sub-protection plate 144 respectively extend toward each other along the first direction X. The first direction X is the axial direction of the battery cell 40. In order to Figure 3For example, the first direction X is also the width direction of the battery cell bracket. During installation, the first sub-bracket body 101 and the second sub-bracket body 102 approach each other along the first direction X to form a complete battery cell installation cavity 11 and a circuit board installation cavity 15. The battery cell bracket in the present invention has the characteristics of simple structure and convenient disassembly and assembly.

[0052] In some embodiments, such as Figure 2 and Figure 4 shown, the two ends of the battery cell installation cavity 11 are respectively located on the first sub-bracket body 101 and the second sub-bracket body 102, that is to say, the openings of the battery cell installation cavity 11 are respectively located on the first side 12 and the second side 13 of the bracket body 10. During assembly, the first sub-bracket body 101 and the second sub-bracket body 102 can be first assembled and cooperated to form the bracket body 10, and then the battery cell 40 is placed through the opening on the first side 12 or the second side 13. Of course, the battery cell 40 can also be first cooperated with the first sub-bracket body 101 and then the second sub-bracket body 102 is buckled on, so as to realize the assembly of the bracket body 10 and the battery cell 40.

[0053] In some embodiments, such as Figures 2 to 3 and Figure 5 shown, the battery cell bracket includes an installation cabin structure 111, and a plurality of installation cabin structures 111 are arranged in the battery cell installation cavity 11.

[0054] In some embodiments, installation cabin structures 111 are provided on both the first sub-bracket body 101 and the second sub-bracket body 102, and the openings on the first side 12 and the second side 13 are both communicated with the installation cabin structures 111. Two coaxially arranged installation cabin structures 111 on the first sub-bracket body 101 and the second sub-bracket body 102 jointly position a battery cell 40.

[0055] In some embodiments, a plurality of installation cabin structures 111 are arranged in an array in the battery cell installation cavity 11, and the battery cells 40 are correspondingly accommodated in the installation cabin structures 111. Therefore, a plurality of battery cells 40 are also arranged in an array. Specifically, the positive electrodes of some of the plurality of battery cells 40 are located at the openings on the first side 12, and the positive electrodes of the other part of the battery cells 40 are located at the openings on the second side 13.

[0056] In some embodiments, such as Figure 2 and Figure 4As shown, the battery pack further includes connection tabs 100. There are multiple connection tabs 100, and multiple connection tabs 100 are provided on both the first side 12 and the second side 13. Each connection tab 100 connects multiple battery cells 40, and the connection tabs 100 located on the first side 12 or the second side 13 are used to connect the battery cells 40 and the circuit board 50. In some embodiments, every 8 battery cells 40 form a group. The positive electrodes of 4 battery cells 40 in a group of battery cells 40 and the negative electrodes of the remaining 4 battery cells 40 are connected to the same connection tab, thereby forming a complete circuit.

[0057] In some embodiments, the protection board 14 includes at least one first sub-protection board 143 and at least one second sub-protection board 144. As long as the protection board 14 can play the role of protecting the circuit board 50, the number and arrangement of the first sub-protection board 143 and the second sub-protection board 144 can be reasonably set according to the actual situation.

[0058] In some embodiments, as Figure 7 shown, the protection board 14 includes a first sub-protection board 143 and a second sub-protection board 144, and the first sub-protection board 143 is integrally formed with the first sub-bracket body 101, and the second sub-protection board 144 is integrally formed with the second sub-bracket body 102. When the first sub-bracket body 101 and the second sub-bracket body 102 are butted together, the first sub-protection board 143 and the second sub-protection board 144 also extend towards each other. Of course, the number of the first sub-protection board 143 and the second sub-protection board 144 is not limited to one, and it can also be a combination of one first sub-protection board 143 and multiple second sub-protection boards 144; it can also be a combination of multiple first sub-protection boards 143 and one second sub-protection board 144.

[0059] In some embodiments, as Figures 2 to 6 shown, the protection board 14 includes multiple first sub-protection boards 143 and multiple second sub-protection boards 144. The multiple first sub-protection boards 143 are arranged at intervals along the second direction Y, the multiple second sub-protection boards 144 are arranged at intervals along the second direction Y, and the multiple first sub-protection boards 143 and the multiple second sub-protection boards 144 are arranged at intervals along the first direction X to form an operation window 141 in combination. The second direction Y is perpendicular to the first direction X, and both the first direction X and the second direction Y are located in the plane where the circuit board 50 is located. Taking Figure 3 as an example, the second direction Y is the length direction of the battery cell bracket. By providing multiple first sub-protection boards 143 and multiple second sub-protection boards 144, the size and position of the multiple first sub-protection boards 143 and the multiple second sub-protection boards 144 can be adjusted according to actual needs to form operation windows 141 of different sizes and shapes, so as to meet the needs of avoiding electronic components on the circuit board 50.

[0060] For easy understanding, reference can be made toFigure 5 and Figure 6 As shown in Figure 6 , it can be seen from the figure that the sizes and shapes of multiple first sub-protection plates 143 are different, and the sizes and shapes of multiple second sub-protection plates 144 are also different. Therefore, the number, arrangement, size, shape, etc. of the first sub-protection plates 143 and the second sub-protection plates 144 are all determined according to the operation window 141 to be actually formed.

[0061] In some embodiments, the protection plate 14 forms an operation window 141 including any one or any combination of the following: notches on at least one first sub-protection plate 143 and / or at least one second sub-protection plate 144, notches formed by spaced-apart adjacent first sub-protection plates 143 and / or adjacent second sub-protection plates 144, and notches formed by spaced-apart first sub-protection plates 143 and second sub-protection plates 144. Multiple-sized operation windows 141 are formed through various combination methods to avoid various components with different sizes on the circuit board 50.

[0062] In some embodiments, as Figure 5 , Figure 6 and Figure 7 shown, specific implementation manners of multiple positions constituting the operation window 141 are shown. The operation window 141 can be a notch formed on the first sub-protection plate 143 or the second sub-protection plate 144; or a notch formed between two adjacent first sub-protection plates 143 among multiple first sub-protection plates 143; or a notch formed by the spaced-apart first sub-protection plate 143 and the second sub-protection plate 144. As Figure 6 shown, the above-mentioned notches are all shown. The operation window 141 formed by the embodiments provided in the figure also has the advantages of convenient mold release, high forming degree, and good product consistency.

[0063] In some embodiments, as Figure 6 shown, there are multiple first sub-protection plates 143 and multiple second sub-protection plates 144. A notch is formed on one of the first sub-protection plates 143; notches are also formed between two adjacent first sub-protection plates 143 or between two adjacent second sub-protection plates 144; notches are also formed between the first sub-protection plate 143 and the second sub-protection plate 144. All the above-mentioned notches together constitute the operation window 141. Of course, if a single notch is regarded as an operation window 141, it can also be considered that multiple operation windows 141 are provided.

[0064] In some embodiments, as Figure 7 shown, inner-hole type operation windows 141 are provided on both the first sub-protection plate 143 and the second sub-protection plate 144.

[0065] In some embodiments, as Figure 5As shown, the battery cell bracket further includes a support structure 20. The support structure 20 is formed on the side of the battery cell installation cavity 11 close to the circuit board installation cavity 15. The side of the support structure 20 facing the circuit board installation cavity 15 provides a support surface for supporting the circuit board 50. The circuit board 50 is supported by the support structure 20 to prevent the circuit board 50 from shaking in the circuit board installation cavity 15, improving the installation stability and reliability of the circuit board 50. At the same time, the support structure 20 being formed on one side of the battery cell installation cavity 11 can reasonably utilize the space inside the bracket body 10, improving the compactness of the battery cell bracket.

[0066] In some embodiments, the support structure 20 serves as the bottom surface of the circuit board installation cavity 15 to support the circuit board 50, and the support structure 20 ensures that the circuit board 50 is horizontally arranged.

[0067] In some embodiments, as Figure 5 shown, the support surface includes a first support surface 21. The support structure 20 includes the outer peripheral surfaces of at least one installation cabin structure 111 adjacent to the circuit board installation cavity 15. At least one outer peripheral surface forms at least one first support surface 21. When there are multiple first support surfaces 21, the multiple first support surfaces 21 are coplanarly arranged. During the process of installing the circuit board 50, the circuit board 50 can also slide along the first support surface 21 to facilitate installation.

[0068] In some embodiments, the installation cabin structure 111 is generally in a cylindrical structure as a whole, and a partial area of the outer peripheral surface of the installation cabin structure 111 provided with the first support surface 21 is a plane rather than an arc surface to facilitate supporting the circuit board 50.

[0069] In some embodiments, the outer peripheral surfaces of multiple installation cabin structures 111 close to the protection board 14 among the multiple installation cabin structures 111 are all planes, and the multiple planes are coplanarly arranged so that the circuit board 50 remains horizontal after entering the circuit board installation cavity 15. Of course, it can also be that the outer surfaces of some of the multiple installation cabin structures 111 at the top form planes. At the same time, the tight connection between the installation cabin structure 111 and the circuit board installation cavity 15 improves the compactness of the battery cell bracket.

[0070] In some embodiments, as Figure 5 shown, in order to further achieve support and limit, the support structure 20 further includes a support column 22. One end of the support column 22 is connected to the junction of adjacent installation cabin structures 111, and the other end of the support column 22 extends into the circuit board installation cavity 15 and forms a second support surface 221. The second support surface 221 is coplanarly arranged with the first support surface 21. By providing the support column 22, the second support surface 221 on the support column 22 is used to hold the circuit board 50, and the coplanar arrangement of the second support surface 221 and the first support surface 21 can ensure the horizontality of the circuit board 50.

[0071] In some embodiments, the support column 22 is integrally formed with the outer peripheral surfaces of two adjacent installation cabin structures 111. Since the outer peripheral surface of the installation cabin structure 111 is an arc surface, a recess is formed between two adjacent installation cabin structures 111. In order to further utilize the space of the bracket body 10, the support column 22 is arranged in the recess, and the top surface of the support column 22, i.e., the second support surface 221, is coplanar with the first support surface 21, improving the support effect.

[0072] In some embodiments, the support column 22 is provided with a fixing hole, so that the circuit board 50 is connected to the fixing hole through a fastener 140. By providing a fixing hole in the support column 22, the fastener 140 passes through the circuit board 50 and cooperates with the fixing hole to fix the circuit board 50, avoiding the movement of the circuit board 50 caused by the shaking of the battery pack.

[0073] In some embodiments, the fixing hole is an internal thread hole, and one end of the fastener 140 is provided with an external thread. The fastener 140 is threadedly engaged with the fixing hole to fix the circuit board 50.

[0074] In some embodiments, as Figure 2 shown, the battery cell bracket further includes a wire management structure 30. The wire management structure 30 is arranged on the bracket body 10 and is located on one side of the circuit board installation cavity 15. By providing the wire management structure 30, the wire harness 110 connected to the circuit board 50 can be sorted out to ensure clear wiring.

[0075] In some embodiments, there are multiple wire harnesses 110. The wire management structure 30 is provided with a plurality of limiting ports at one end facing the wire harness 110, and each limiting port corresponds to a different connection wire of the wire harness 110. Optionally, the sizes of the limiting ports are different to correspond to various different specifications of connection wires. At the same time, the design of the wire management structure 30 not only improves the cleanliness inside the battery pack, but also avoids the mutual interference between the connection wires by reasonably planning the path of the wire harness 110.

[0076] In some embodiments, as Figure 2 shown, the battery pack further includes a first mounting plate 120 and a second mounting plate 130 respectively corresponding to the third side surface 17 and the fourth side surface 18. The battery cell bracket is further protected, and the first mounting plate 120 is provided with an avoidance hole 121 corresponding to the circuit board insertion and extraction port 16 to avoid the wire harness 110.

[0077] In some embodiments, as Figures 2 to 5 shown, the surface of the bracket body 10 further has a circuit board insertion and extraction port 16 communicating with the circuit board installation cavity 15. By providing the circuit board insertion and extraction port 16, it is convenient to install the circuit board 50 through the circuit board insertion and extraction port 16. The circuit board 50 can extend into or be pulled out of the circuit board installation cavity 15 through the circuit board insertion and extraction port 16 without disassembling the entire bracket body 10, and the operation is simple.

[0078] In some embodiments, the width of the circuit board insertion and extraction port 16 is greater than the width of the circuit board 50, facilitating the installation of the circuit board 50. The circuit board insertion and extraction port 16 is also partially located on the first sub-bracket body 101 and the other part is located on the second sub-bracket body 102, that is, the circuit board insertion and extraction port 16 is provided on the third side surface 17 of the bracket body 10.

[0079] In some embodiments, a connection structure is provided on one side of the fourth side surface 18 located inside the battery cell installation cavity 11. A buckle and a clamping groove are respectively provided on the first sub-bracket body 101 and the second sub-bracket body 102, and the connection stability of the bracket body 10 is improved through the cooperation of the buckle and the clamping groove. Of course, a connection structure may also be provided on the inner side of the third side surface 17 located in the battery cell installation cavity 11.

[0080] In some embodiments, as Figures 3 to 5 shown, an insertion port 142 is provided at one end of the protection board 14 close to the circuit board insertion and extraction port 16. The battery cell bracket further includes a wire management structure 30, and the wire management structure 30 is provided at the insertion port 142. By providing the insertion port 142 on the protection board 14, when the circuit board 50 is installed in place, the wire management structure 30 is inserted through the insertion port 142, thereby limiting and fixing the wire harness 110 of the circuit board 50.

[0081] In some embodiments, the insertion port 142 is located at one end close to the circuit board insertion and extraction port 16. When the circuit board 50 connected with the wire harness 110 extends into the circuit board installation cavity 15, the wire harness 110 can be seen through the insertion port 142, and the positions of wire harnesses 110 of different specifications are adjusted and then the wire management structure 30 is placed. Optionally, one end of the wire management structure 30 far from the avoidance notch partially extends out of the insertion port 142 for easy disassembly and maintenance.

[0082] It should be noted that, in order to ensure sealing, after the wire management structure 30 is installed, the insertion port 142 and the circuit board insertion and extraction port 16 can be sealed by applying glue, thereby improving the overall sealing performance and stability.

[0083] In some embodiments, the outer shell 60 is a soft outer shell, and the soft outer shell is selected from any one of the following: PVC film, PE, PET.

[0084] In some embodiments, the outer shell 60 includes a first plate structure 61, a second plate structure 62 and a third plate structure 63, all of which are PVC heat-shrinkable films and respectively correspond to the first side surface 12, the second side surface 13 and the protection board 14. Since the outer shell 60 is too soft to effectively protect the circuit board 50, the protection board 14 is needed.

[0085] The present invention has at least the following beneficial effects:

[0086] By arranging a battery cell installation cavity 11 and a circuit board installation cavity 15 on the bracket body 10, and setting one side of the circuit board installation cavity 15 as a protection board 14 and integrally forming it with the bracket body 10, the structure of the battery cell bracket can be simplified, the production process can be reduced, the structure of the circuit board installation cavity 15 can be effectively utilized, and the disadvantages of large space occupation and inconvenient operation caused by additionally arranging a protection structure in the prior art can be avoided. At the same time, the protection board 14 partially overlaps with the circuit board 50, so that the circuit board 50 can be protected when the circuit board installation cavity 15 is subjected to an external force. The setting of the operation window 141 can enable relevant operations on the circuit board 50 without disassembling the protection board 14. The operations include but are not limited to: fixing, burning, soldering components on the circuit board 50, or overhauling the circuit and components on the circuit board 50. In addition, since the protection board 14 in the present invention is integrally formed with the bracket body 10, secondary installation is not required, the assembly difficulty is greatly reduced, and the product consistency is greatly improved.

[0087] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0088] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A battery cell bracket, characterized in that, Comprising: A bracket body, the bracket body having a battery cell installation cavity and a circuit board installation cavity, the battery cell installation cavity being used for installing a battery cell, the circuit board installation cavity being used for installing a circuit board, and the circuit board installation cavity being located on one side of the battery cell installation cavity; A protection board, the side wall of the circuit board installation cavity away from the battery cell installation cavity being the protection board, and the protection board being integrally formed with the bracket body; The projection of the protection board in the plane where the circuit board is located overlaps at least partially with the circuit board; The protection board is formed with an operation window for performing operation actions on the circuit board; The bracket body includes a first sub-bracket body and a second sub-bracket body, and the first sub-bracket body and the second sub-bracket body jointly enclose the battery cell installation cavity and the circuit board installation cavity; The first sub-bracket body and the second sub-bracket body are spliced together along a first direction, a second direction is perpendicular to the first direction, the first direction is the axial direction of the battery cell, and the second direction is the length direction of the battery cell bracket; The battery cell installation cavity and the circuit board installation cavity are arranged in a direction perpendicular to the first direction and the second direction.

2. The battery cell bracket according to claim 1, characterized in that The protection board includes at least one first sub-protection board and at least one second sub-protection board; The first sub-bracket body is integrally formed with the first sub-protection board; The second sub-bracket body is integrally formed with the second sub-protection board.

3. The cell support according to claim 2, characterized in that, The protection board being formed with the operation window includes any one or any combination of the following: notches on at least one of the first sub-protection boards and / or at least one of the second sub-protection boards, notches formed by adjacent first sub-protection boards and / or adjacent second sub-protection boards being spaced apart, and notches formed by the first sub-protection board and the second sub-protection board being spaced apart.

4. The cell holder according to claim 2, wherein The first sub-protection board and the second sub-protection board respectively extend towards each other along the first direction.

5. The cell holder according to claim 4, wherein The protection board includes a plurality of the first sub-protection boards and a plurality of the second sub-protection boards; A plurality of the first sub-protection boards are arranged at intervals along the second direction, a plurality of the second sub-protection boards are arranged at intervals along the second direction, and a plurality of the first sub-protection boards and a plurality of the second sub-protection boards are arranged at intervals along the first direction to form the operation window in combination; Both the first direction and the second direction are located in the plane where the circuit board is located.

6. The cell holder according to claim 1, characterized in that, The battery cell bracket further includes a support structure, the support structure being formed on the side of the battery cell installation cavity close to the circuit board installation cavity, and the side of the support structure facing the circuit board installation cavity providing a support surface for supporting the circuit board.

7. The cell holder according to claim 6, characterized in that, The battery cell bracket includes an installation cabin structure, and a plurality of the installation cabin structures are arranged in the battery cell installation cavity; The support surface includes a first support surface, the support structure includes the outer peripheral surface of at least one of the installation cabin structures adjacent to the circuit board installation cavity, at least one of the outer peripheral surfaces forms at least one of the first support surfaces, and all the first support surfaces are coplanarly arranged.

8. The cell holder according to claim 7, wherein, The support structure further includes support columns, one end of each support column is connected to the junction of adjacent installation cabin structures, the other end of each support column extends towards the circuit board installation cavity and forms a second support surface, and the second support surface is coplanar with the first support surface.

9. The cell holder according to claim 8, wherein The support column is provided with fixing holes so that the circuit board is connected to the fixing holes through fasteners.

10. The battery cell bracket according to any one of claims 1 to 9, characterized in that, The battery cell support further includes a wire management structure, and the wire management structure is arranged on the support body and is located on one side of the circuit board installation cavity.

11. The cell holder according to any one of claims 1 to 9, characterized in that, The surface of the support body further has a circuit board insertion and extraction opening communicating with the circuit board installation cavity.

12. The cell holder according to claim 11, wherein One end of the protection board close to the circuit board insertion and extraction opening is provided with an insertion interface, and the battery cell support further includes a wire management structure, and the wire management structure is arranged at the insertion interface.

13. A battery pack, characterized in that, Comprising: Battery cells; Circuit boards; A battery cell support, the battery cell support being the battery cell support according to any one of claims 1 to 12, the battery cells being installed in the installation cabin structure of the support body of the battery cell support, and the circuit boards being accommodated in the circuit board installation cavity of the support body; A housing for covering the battery cell support.

14. The battery pack according to claim 13, wherein, The housing is a soft housing, and the soft housing is selected from any one of the following: PVC film, PE, PET.

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