Battery cell support, battery module and battery pack

Abstract

The utility model provides a battery cell support, battery module and battery pack, battery cell support is used for installing battery cell, battery cell support includes: limit support portion, limit support portion extends along the centre line of battery cell and is arranged around the periphery of battery cell to form installation space; the limiting supporting part comprises a first opening end and a second opening end which are arranged at an interval along the peripheral side of the mounting space so as to jointly define an opening part communicated with the mounting space, the opening part penetrates through the length direction of the limiting supporting part, and the battery cell is mounted in the mounting space through the opening part; wherein the center line of the limiting supporting part and the center line of the corresponding battery cell are collinear, the included angle between the connecting line of the first opening end and the center line of the limiting supporting part and the connecting line of the second opening end and the center line of the limiting supporting part is a preset included angle C, and the value range of the preset included angle C is 0 degree < C < 180 degrees; the problem that in the prior art, a battery cell fixing support enables the size of a battery module to be large is solved.

Description

Technical Field

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

[0002] As the demand for battery lightweighting continues to increase, consumers are also placing higher and higher demands on battery size and weight, which results in the available design space for batteries becoming increasingly limited.

[0003] Currently, existing cell mounting brackets are almost always fully enclosed, resulting in a larger battery module. Even if some brackets have gaps, they are only provided in a localized manner, rather than extending along the entire longitudinal direction of the cell. This results in the cell bracket still being fully enclosed at the head or tail during cell assembly, without reducing the battery's overall footprint. Utility Model Content

[0004] The main purpose of the present invention is to provide a battery cell bracket, a battery module and a battery pack, so as to solve the problem in the prior art that the battery cell fixing bracket makes the battery module larger in size.

[0005] In order to achieve the above-mentioned purpose, according to the first aspect of the present invention, a battery cell holder is provided for installing battery cells, and the battery cell holder includes: a limiting support portion, the limiting support portion extends along the center line of the battery cell and is arranged around the circumference of the battery cell to form an installation space; the limiting support portion includes a first open end and a second open end spaced apart along the circumference of the installation space to jointly form an opening portion connected to the installation space, the opening portion is arranged throughout the length direction of the limiting support portion, and the battery cell is installed in the installation space through the opening portion; wherein, the center line of the limiting support portion is collinear with the center line of the corresponding battery cell, and the angle between the line connecting the first open end and the center line of the limiting support portion and the line connecting the second open end and the center line of the limiting support portion is a predetermined angle C, and the value range of the predetermined angle C is 0°<C<180°.

[0006] Furthermore, the battery cell holder includes a plurality of limiting support parts, which are arranged in sequence along a predetermined straight line and connected or arranged in an array, wherein the predetermined angle C of at least some of the plurality of limiting support parts has a value range of 100°≤C≤170°.

[0007] Furthermore, when at least three of the multiple limiting support parts are arranged and connected in sequence along the same straight line perpendicular to the length direction of the limiting support parts, the predetermined angle C of the middle limiting support part has a value range of 40°≤C≤100°.

[0008] Furthermore, the battery cell holder includes two connected limiting support parts, and the two connected limiting support parts are respectively a first limiting support part and a second limiting support part; wherein, the distance between the first opening end of the first limiting support part and the center line of the second limiting support part is smaller than the distance between the center line of the first limiting support part and the center line of the second limiting support part; the distance between the second opening end of the first limiting support part and the center line of the second limiting support part is greater than the distance between the center line of the first limiting support part and the center line of the second limiting support part.

[0009] Furthermore, the battery cell holder includes: an end face stop portion, which is located at one end of the extension direction of the limiting support portion; and / or an electrode mark, which is arranged on the limiting support portion and is located on the side of the limiting support portion away from the installation space.

[0010] Furthermore, the battery cell holder includes a plurality of limiting support parts, and the plurality of limiting support parts are arranged in a connected manner; wherein, the first side of the battery cell holder is connected to the first side of the shell of the battery module having the battery cell holder through a first fastener, and the shell is provided with a first through hole for the threaded end of the first fastener to pass through; a first mounting protrusion is provided between two adjacent limiting support parts, the first mounting protrusion extends toward the first side of the battery cell holder, and the first mounting protrusion is provided with a first threaded hole for threaded connection with the threaded end of the first fastener; and / or the second side of the battery cell holder is connected to the second side of the shell through a second fastener, and the shell is provided with a second through hole for the threaded end of the second fastener to pass through; a second mounting protrusion is provided between two adjacent limiting support parts, the second mounting protrusion extends toward the second side of the battery cell holder, and the second mounting protrusion is provided with a second threaded hole for threaded connection with the threaded end of the second fastener.

[0011] Furthermore, two adjacent battery cell holders arranged in sequence along the extension direction of the limiting support part are connected by a third fastener; the battery cell holder includes multiple limiting support parts, and the multiple limiting support parts are arranged in a continuous manner; the battery cell holder also includes: a third mounting protrusion, the third mounting protrusion is arranged between two adjacent limiting support parts of the battery cell holder, the third mounting protrusion is located at the first end of the extension direction of the limiting support part and extends along the extension direction of the limiting support part, and the third mounting protrusion is provided with a third through hole for the threaded end of the third fastener to pass through; a fourth mounting protrusion, the fourth mounting protrusion is arranged between two adjacent limiting support parts of the battery cell holder, the fourth mounting protrusion is located at the second end of the extension direction of the limiting support part and extends along the extension direction of the limiting support part, and the fourth mounting protrusion is provided with a third threaded hole for threaded connection with the threaded end of the third fastener.

[0012] According to a second aspect of the present invention, a battery module is provided, comprising the above-mentioned battery cell holder. The battery module further comprises: a battery cell, wherein the battery cell is installed in the installation space of the battery cell holder.

[0013] Furthermore, the battery module includes a plurality of battery cell supports, which are arranged in sequence along a predetermined direction, and two adjacent battery cell supports are detachably connected.

[0014] According to a third aspect of the present invention, a battery pack is provided, comprising the above-mentioned battery module, the battery pack further comprising: an outer shell having a shell space, the battery module being installed in the shell space, and the cell holder of the battery module being detachably connected to the outer shell.

[0015] Applying the technical solution of the present invention, the battery cell holder of the present invention is used to install battery cells, and the battery cell holder includes: a limiting support portion, the limiting support portion extends along the center line of the battery cell and is arranged around the circumference of the battery cell to form an installation space; the limiting support portion includes a first open end and a second open end spaced apart along the circumference of the installation space to jointly form an opening portion connected to the installation space, the opening portion is arranged throughout the length direction of the limiting support portion, and the battery cell is installed in the installation space through the opening portion; wherein, the center line of the limiting support portion is collinear with the center line of the corresponding battery cell, and the angle between the line connecting the first open end and the center line of the limiting support portion and the line connecting the second open end and the center line of the limiting support portion is a predetermined angle C, and the value range of the predetermined angle C is 0°<C<180°. In this way, the battery cell holder of the present invention avoids the disadvantage of insufficient internal space of the battery product by setting an opening portion. The part of the battery cell close to the opening portion can directly contact the outer shell of the battery module with the battery cell holder in the entire length direction. The battery cell can be fixed by wrapping only a part of the battery cell, which can make the volume of the entire battery product smaller and leave space for other structural settings of the equipment installed with the battery product, solving the problem in the prior art that the battery cell fixing bracket will make the volume of the battery module larger. In addition, compared with similar battery products in the prior art, the battery product is lighter in weight, simpler in structure, and has lower processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic structural diagram of a first embodiment of a battery cell support according to the present utility model in one direction is shown;

[0018] Figure 2 Shown Figure 1The schematic diagram of the structure of the battery cell support shown in another direction;

[0019] Figure 3 Shows two Figure 1 The connection diagram of the battery holder shown;

[0020] Figure 4 Shown Figure 1 The cell holder shown is a top view with a cell installed;

[0021] Figure 5 FIG2 shows a top view of a second embodiment of a battery cell holder according to the present utility model when a battery cell is installed;

[0022] Figure 6 FIG2 shows a top view of a third embodiment of a battery cell holder according to the present utility model when a battery cell is installed;

[0023] Figure 7 FIG2 shows a top view of a fourth embodiment of a battery cell holder according to the present invention when a battery cell is installed;

[0024] Figure 8 Shown include Figure 1 An exploded view of the battery module of the cell holder shown;

[0025] Figure 9 Shown include Figure 8 A half-section view of the battery module shown;

[0026] Figure 10 Shown include Figure 9 A cross-sectional view of the battery module along the AA direction;

[0027] Figure 11 Shown include Figure 9 The cross-sectional view of the battery module along the BB direction is shown.

[0028] The above drawings include the following reference numerals:

[0029] 1. First housing; 2. Circuit board; 3. Battery cell; 4. First busbar; 5. First insulating member;

[0030] 6. Cell holder; 60. Electrode mark; 61. Position limiting support; 62. Installation space; 63. End surface stopper; 64. First mounting protrusion; 65. Second mounting protrusion; 66. Third mounting protrusion; 67. Fourth mounting protrusion;

[0031] 7. Second shell; 8. Second insulating member; 9. Second busbar; 10. End shell; 11. Outer shell; 12. First fastener; 13. Second fastener; 14. Third fastener. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] like Figures 1 to 7 As shown, the utility model provides a battery cell holder for installing a battery cell 3, and the battery cell holder includes: a limiting support portion 61, the limiting support portion 61 extends along the center line of the battery cell 3 and is arranged around the circumference of the battery cell 3 to form an installation space 62; the limiting support portion 61 includes a first open end and a second open end spaced apart along the circumference of the installation space 62 to jointly form an opening portion connected to the installation space 62, the opening portion is arranged throughout the length direction of the limiting support portion 61, and the battery cell 3 is installed in the installation space 62 through the opening portion; wherein, the center line of the limiting support portion 61 is collinear with the center line of the corresponding battery cell 3, and the angle between the line connecting the first open end and the center line of the limiting support portion 61 and the line connecting the second open end and the center line of the limiting support portion 61 is a predetermined angle C, and the value range of the predetermined angle C is 0°<C<180°.

[0034] In this way, the battery cell holder of the present invention avoids the disadvantage of insufficient internal space of the battery product by setting an opening portion. The portion of the battery cell 3 close to the opening portion can directly contact the outer shell 11 of the battery module with the battery cell holder in the entire length direction. The battery cell can be fixed by wrapping only a part of the battery cell, which can make the volume of the entire battery product smaller and leave space for other structural settings of the equipment installed with the battery product, solving the problem in the prior art that the battery cell fixing bracket will make the volume of the battery module larger. In addition, compared with similar battery products in the prior art, the battery product is also lighter in weight, simpler in structure, and lower in processing cost.

[0035] When the value range of the predetermined angle C is greater than or equal to 180°, the effect of the bracket wrapping the battery cell is not ideal, and the battery cell will slide out of the battery cell space, and the wrapping effect cannot be achieved.

[0036] like Figures 4 to 7 As shown, the battery cell holder includes a plurality of limiting support parts 61, and the plurality of limiting support parts 61 are arranged in sequence along a predetermined straight line and connected or the plurality of limiting support parts 61 are arranged in an array, wherein the predetermined angle C of at least some of the plurality of limiting support parts 61 has a value range of 100°≤C≤170°, so as to ensure that the battery cell 3 and the shell 11 of the battery module have a sufficiently large contact area while ensuring that the limiting support part 61 has sufficient limiting stability for the battery cell 3, thereby reducing the volume of the battery product and fixing the battery cell 3.

[0037] like Figure 4In the illustrated embodiment, the two position-limiting support portions 61 are sequentially arranged and connected along a predetermined straight line, wherein the predetermined angle C of each position-limiting support portion 61 has a value range of 100°≤C≤170°.

[0038] like Figure 5 In the illustrated embodiment, three position-limiting support portions 61 are sequentially arranged and connected along a predetermined straight line, wherein the predetermined angles C of the first position-limiting support portion 61 and the third position-limiting support portion 61 are both in the range of 100°≤C≤170°.

[0039] like Figure 6 In the illustrated embodiment, four position-limiting support portions 61 are arranged and connected in a rectangular array, wherein the predetermined angle C of each position-limiting support portion 61 is in the range of 100°≤C≤170°.

[0040] like Figure 7 In the embodiment shown, five limiting support portions 61 are arranged and connected in a trapezoidal array, wherein the range of the predetermined angle C of the first limiting support portion 61 and the third limiting support portion 61 in the three limiting support portions 61 in the first column is 100°≤C≤170°, and the range of the predetermined angle C of each limiting support portion 61 in the two limiting support portions 61 in the second column is 100°≤C≤170°.

[0041] like Figure 5 and Figure 7 As shown, when at least three of the multiple limit support parts 61 are arranged and connected in sequence along the same straight line perpendicular to the length direction of the limit support part 61, the predetermined angle C of the limit support part 61 located in the middle has a value range of 40°≤C≤100°. This is because the setting of the limit support parts 61 located on both sides will limit the size of the opening part of the limit support part 61 located in the middle. Therefore, the predetermined angle C of the limit support part 61 located in the middle will be smaller than the predetermined angle C of the limit support parts 61 located on both sides.

[0042] like Figure 5 In the illustrated embodiment, three position-limiting support portions 61 are sequentially arranged and connected along a predetermined straight line, wherein the predetermined angle C of the second position-limiting support portion 61 has a value range of 40°≤C≤100°.

[0043] like Figure 7 In the illustrated embodiment, five position-limiting support portions 61 are arranged and connected in a trapezoidal array, wherein the predetermined angle C of the second position-limiting support portion 61 in the three position-limiting support portions 61 in the first row is in the range of 40°≤C≤100°.

[0044] like Figures 1 to 4In the embodiment shown, the battery cell holder includes two connected limiting support parts 61, and the two connected limiting support parts 61 are respectively a first limiting support part and a second limiting support part; wherein, the distance between the first opening end of the first limiting support part and the center line of the second limiting support part is smaller than the distance between the center line of the first limiting support part and the center line of the second limiting support part; the distance between the second opening end of the first limiting support part and the center line of the second limiting support part is larger than the distance between the center line of the first limiting support part and the center line of the second limiting support part.

[0045] In this way, when the battery cell holder of the present invention is installed in the shell 11 of the battery pack, a part of the battery cell holder is located between the two battery cells 3, and the other part of the battery cell holder is located between the battery cell 3 and the first side of the shell 11, while the battery cell 3 and the second side, third side and fourth side of the shell 11 can be in direct contact without being affected by the thickness of the battery cell holder, thereby reducing the volume of the shell 11.

[0046] The battery cell holder of the present invention includes: an end face stop portion 63, which is located at one end of the extension direction of the limiting support portion 61; and / or an electrode mark 60, which is arranged on the limiting support portion 61, and the electrode mark 60 is located on the side of the limiting support portion 61 away from the installation space 62.

[0047] like Figure 1 and Figure 2 As shown, the battery cell holder includes: a plurality of end face stop portions 63, which are arranged in a one-to-one correspondence with a plurality of limit support portions 61, and each end face stop portion 63 is located at one end of the extension direction of the corresponding limit support portion 61; and / or a plurality of electrode marks 60, which are arranged in a one-to-one correspondence on a plurality of limit support portions 61, and each electrode mark 60 is located on the side of the corresponding limit support portion 61 away from the installation space 62.

[0048] Preferably, each battery cell 3 is a cylindrical battery cell, each end surface stop portion 63 is a circular ring structure, and the outer diameter of each end surface stop portion 63 is smaller than or equal to the outer diameter of the corresponding battery cell 3 to avoid occupying more space.

[0049] like Figures 1 to 7As shown, the battery cell holder includes a plurality of limiting support parts 61, and the plurality of limiting support parts 61 are arranged in a connected manner; wherein, the first side of the battery cell holder is connected to the first side of the shell 11 through the first fastener 12, and the shell 11 is provided with a first through hole for the threaded end of the first fastener 12 to pass through; a first mounting protrusion 64 is provided between two adjacent limiting support parts 61, and the first mounting protrusion 64 extends toward the first side of the battery cell holder, and the first mounting protrusion 64 is provided with a first threaded hole for threaded connection with the threaded end of the first fastener 12; and / or the second side of the battery cell holder is connected to the second side of the shell 11 through the second fastener 13, and the shell 11 is provided with a second through hole for the threaded end of the second fastener 13 to pass through; a second mounting protrusion 65 is provided between two adjacent limiting support parts 61, and the second mounting protrusion 65 extends toward the second side of the battery cell holder, and the second mounting protrusion 65 is provided with a second threaded hole for threaded connection with the threaded end of the second fastener 13.

[0050] Specifically, the first mounting protrusion 64 and the second mounting protrusion 65 are both located in the space between the two limiting support parts 61 of the battery holder, and do not occupy other space around the battery holder, thereby achieving the purpose of reducing the volume of the battery holder to save the space occupied by the battery holder.

[0051] like Figures 1 to 4 As shown, two adjacent battery cell holders arranged in sequence along the extension direction of the limiting support part 61 are connected by a third fastener 14; the battery cell holder includes a plurality of limiting support parts 61, and the plurality of limiting support parts 61 are arranged in a continuous manner; the battery cell holder also includes: a third mounting protrusion 66, the third mounting protrusion 66 is arranged between two adjacent limiting support parts 61 of the battery cell holder, the third mounting protrusion 66 is located at a first end in the extension direction of the limiting support part 61 and extends along the extension direction of the limiting support part 61, and the third mounting protrusion 66 is provided with a third through hole for the threaded end of the third fastener 14 to pass through; a fourth mounting protrusion 67, the fourth mounting protrusion 67 is arranged between two adjacent limiting support parts 61 of the battery cell holder, the fourth mounting protrusion 67 is located at a second end in the extension direction of the limiting support part 61 and extends along the extension direction of the limiting support part 61, and the fourth mounting protrusion 67 is provided with a third threaded hole for threaded connection with the threaded end of the third fastener 14.

[0052] Specifically, the third mounting protrusion 66 and the fourth mounting protrusion 67 are both located in the space between the two limiting support parts 61 of the battery holder, and do not occupy other space around the battery holder, thereby achieving the purpose of reducing the volume of the battery holder to save the space occupied by the battery holder.

[0053] like Figures 8 to 11As shown, the present invention provides a battery module, including the above-mentioned battery cell bracket 6 , and the battery module further includes: a battery cell 3 , and the battery cell 3 is installed in the installation space 62 of the battery cell bracket 6 .

[0054] Specifically, the battery module includes a plurality of battery cell supports 6 , which are sequentially arranged along a predetermined direction, and two adjacent battery cell supports 6 are detachably connected.

[0055] Two adjacent battery cell supports 6 are detachably connected via a third fastener 14 .

[0056] The battery module of the present invention also includes a circuit board 2, a first bus 4, a first insulating member 5, a second insulating member 8 and a second bus 9. The circuit board 2 is located on the side of the battery cell holder 6 away from the battery cell 3. The positive and negative poles of the battery cell 3 are connected to the circuit board 2 through the first bus 4 and the second bus 9 respectively. The first insulating member 5 is located on the side of the first bus 4 away from the battery cell 3, and the second insulating member 8 is located on the side of the circuit board 2 away from the battery cell holder 6.

[0057] Preferably, the first insulating member 5 and the second insulating member 8 are both PC sheets.

[0058] like Figures 8 to 11 As shown, the present invention also provides a battery pack, including the above-mentioned battery module, the battery pack also includes: a shell 11, the shell 11 has a shell space, the battery module is installed in the shell space, and the battery cell bracket 6 of the battery module is detachably connected to the shell 11.

[0059] Specifically, the outer shell 11 includes a first shell 1, a second shell 7 and an end shell 10. The first shell 1 and the second shell 7 are arranged opposite to each other and connected to form a accommodating cavity for installing the battery module and an end through hole connected to the accommodating cavity. The end shell 10 is installed at the end through hole.

[0060] The first side of the cell holder 6 is connected to the first shell 1 via a first fastener 12 , and the second side of the cell holder 6 is connected to the second shell 7 via a second fastener 13 .

[0061] Depend on Figure 10 and Figure 11 It can be seen that in the area close to the battery cell and the shell 11, the battery cell holder is notched, so that the thickness space of the battery cell holder 6 is saved in multiple directions of the entire battery pack, and the assembly and fixing effect of the battery cell 3 can also be achieved, which is conducive to the production of a lighter and more compact battery pack.

[0062] The assembly process of the battery pack of the present invention is as follows:

[0063] (1) Place multiple battery cells 3 into a welding jig and weld busbars (including a first busbar 4 and a second busbar 9, the specific number of busbars used depends on the number of battery cells 3) onto each of them;

[0064] (2) Connecting multiple cell holders 6 via a third fastener 14;

[0065] (3) Install the welded battery cell 3 onto the connected battery cell holder 6 and attach the first insulating member 5 to its tail;

[0066] (4) Fix the circuit board 2 to the battery holder 6, and weld the busbar to the circuit board 2 to make them conductive;

[0067] (5) A second insulating member 8 is attached to the circuit board 2 to insulate and protect its components;

[0068] (6) Installing the first shell 1 and the second shell 7;

[0069] (7) The end housing 10 is mounted to obtain a battery pack.

[0070] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0071] The battery cell holder of the present invention is used to install the battery cell 3, and the battery cell holder includes: a limiting support portion 61, the limiting support portion 61 extends along the center line of the battery cell 3 and is arranged around the circumference of the battery cell 3 to form an installation space 62; the limiting support portion 61 includes a first open end and a second open end spaced apart along the circumference of the installation space 62 to jointly form an opening portion connected to the installation space 62, the opening portion is arranged throughout the length direction of the limiting support portion 61, and the battery cell 3 is installed in the installation space 62 through the opening portion; wherein, the center line of the limiting support portion 61 is collinear with the center line of the corresponding battery cell 3, and the angle between the line connecting the first open end and the center line of the limiting support portion 61 and the line connecting the second open end and the center line of the limiting support portion 61 is a predetermined angle C, and the value range of the predetermined angle C is 0°<C<180°, so that the portion of the battery cell 3 away from the corresponding opening portion directly contacts the shell 11 of the battery module with the battery cell holder. In this way, the battery cell holder of the present invention avoids the disadvantage of insufficient internal space of the battery product by setting an opening portion. The portion of the battery cell 3 close to the opening portion can directly contact the outer shell 11 of the battery module with the battery cell holder in the entire length direction. The battery cell can be fixed by wrapping only a part of the battery cell, which can make the volume of the entire battery product smaller and leave space for other structural settings of the equipment installed with the battery product, solving the problem in the prior art that the battery cell fixing bracket will make the volume of the battery module larger. In addition, compared with similar battery products in the prior art, the battery product is also lighter in weight, simpler in structure, and lower in processing cost.

[0072] 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, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0073] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0074] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0075] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. 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 figures. For example, if the device in the 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.

[0076] 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. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0077] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A battery cell bracket, characterized in that: Used for installing a battery cell (3), the battery cell bracket comprises: A position limiting support portion (61), the position limiting support portion (61) extending along the center line of the battery cell (3) and arranged around the circumference of the battery cell (3) to form an installation space (62); the position limiting support portion (61) includes a first opening end and a second opening end spaced apart along the circumference of the installation space (62) to jointly form an opening portion communicating with the installation space (62); the opening portion is arranged in the longitudinal direction of the position limiting support portion (61), and the battery cell (3) is installed in the installation space (62) through the opening portion; The center line of the position-limiting support portion (61) is collinear with the center line of the corresponding battery cell (3), and the angle between the line connecting the first opening end and the center line of the position-limiting support portion (61) and the line connecting the second opening end and the center line of the position-limiting support portion (61) is a predetermined angle C, and the value range of the predetermined angle C is 0°<C<180°.

2. The battery cell support according to claim 1, characterized in that: The cell support comprises a plurality of position-limiting support portions (61), wherein the plurality of position-limiting support portions (61) are sequentially arranged and connected along a predetermined straight line or the plurality of position-limiting support portions (61) are arranged in an array, wherein the predetermined angle C of at least some of the position-limiting support portions (61) in the plurality of position-limiting support portions (61) has a value range of 100°≤C≤170°.

3. The battery cell support according to claim 2, characterized in that: When at least three of the plurality of position-limiting support portions (61) are sequentially arranged and connected along a same straight line perpendicular to the length direction of the position-limiting support portion (61), the value range of the predetermined angle C of the position-limiting support portion (61) located in the middle is 40°≤C≤100°.

4. The battery cell support according to claim 1, characterized in that: The battery cell support comprises two connected position-limiting support parts (61), and the two connected position-limiting support parts (61) are respectively a first position-limiting support part and a second position-limiting support part; wherein, The distance between the first open end of the first position-limiting support portion and the center line of the second position-limiting support portion is smaller than the distance between the center line of the first position-limiting support portion and the center line of the second position-limiting support portion; The distance between the second open end of the first position-limiting support portion and the center line of the second position-limiting support portion is greater than the distance between the center line of the first position-limiting support portion and the center line of the second position-limiting support portion.

5. The battery cell support according to claim 1, characterized in that: The battery cell support comprises: an end surface stop portion (63), the end surface stop portion (63) being located at one end of the extension direction of the position-limiting support portion (61); and / or An electrode mark (60), wherein the electrode mark (60) is arranged on the position-limiting support portion (61), and the electrode mark (60) is located on a side of the position-limiting support portion (61) away from the installation space (62).

6. The battery cell holder according to any one of claims 1 to 5, characterized in that: The battery cell support comprises a plurality of position-limiting support portions (61), and the plurality of position-limiting support portions (61) are connected and arranged in a continuous manner; wherein, The first side of the cell holder is connected to the first side of the housing (11) of the battery module having the cell holder via a first fastener (12), and the housing (11) is provided with a first through hole for the threaded end of the first fastener (12) to pass through; a first mounting protrusion (64) is provided between two adjacent limiting support portions (61), the first mounting protrusion (64) extends toward the first side of the cell holder, and the first mounting protrusion (64) is provided with a first threaded hole for threaded connection with the threaded end of the first fastener (12); and / or The second side of the battery holder is connected to the second side of the housing (11) via a second fastener (13), and the housing (11) is provided with a second through hole for the threaded end of the second fastener (13) to pass through; a second mounting protrusion (65) is provided between two adjacent limiting support portions (61), and the second mounting protrusion (65) extends toward the second side of the battery holder, and the second mounting protrusion (65) is provided with a second threaded hole for threaded connection with the threaded end of the second fastener (13).

7. The battery cell holder according to any one of claims 1 to 5, characterized in that: Two adjacent battery holders sequentially arranged along the extension direction of the position-limiting support portion (61) are connected via a third fastener (14); the battery holder comprises a plurality of position-limiting support portions (61), and the plurality of position-limiting support portions (61) are arranged in a connected manner; the battery holder further comprises: a third mounting protrusion (66), the third mounting protrusion (66) being arranged between two adjacent limiting support portions (61) of the battery holder, the third mounting protrusion (66) being located at a first end in an extension direction of the limiting support portion (61) and extending along the extension direction of the limiting support portion (61), and the third mounting protrusion (66) being provided with a third through hole for allowing a threaded end of the third fastener (14) to pass through; A fourth mounting protrusion (67), the fourth mounting protrusion (67) is arranged between two adjacent limiting support parts (61) of the battery holder, the fourth mounting protrusion (67) is located at the second end of the extension direction of the limiting support part (61) and extends along the extension direction of the limiting support part (61), and the fourth mounting protrusion (67) is provided with a third threaded hole for threaded connection with the threaded end of the third fastener (14).

8. A battery module, characterized in that: The battery module comprises the battery cell holder according to any one of claims 1 to 7, wherein the battery cell (3) is installed in the installation space (62) of the battery cell holder.

9. The battery module according to claim 8, characterized in that: The battery module includes a plurality of battery cell supports, which are sequentially arranged along a predetermined direction, and two adjacent battery cell supports are detachably connected.

10. A battery pack, characterized in that: The battery pack comprises the battery module according to claim 8 or 9, wherein the battery pack further comprises: a shell (11), the shell (11) having a shell space, the battery module is installed in the shell space, and the cell holder of the battery module is detachably connected to the shell (11).

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